Добірка наукової літератури з теми "Spheroidal geometry"
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Статті в журналах з теми "Spheroidal geometry"
Ivers, D. J. "Kinematic dynamos in spheroidal geometries." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 473, no. 2206 (October 2017): 20170432. http://dx.doi.org/10.1098/rspa.2017.0432.
Повний текст джерелаKiani, Mostafa, Nabi Chegini, Abdolreza Safari, and Borzoo Nazari. "SPHEROIDAL SPLINE INTERPOLATION AND ITS APPLICATION IN GEODESY." Geodesy and cartography 46, no. 3 (October 12, 2020): 123–35. http://dx.doi.org/10.3846/gac.2020.11316.
Повний текст джерелаMomoh, O. D., M. N. O. Sadiku, and S. M. Musa. "Solution of Axisymmetric Potential Problem in Oblate Spheroid Using the Exodus Method." Journal of Computational Engineering 2014 (March 17, 2014): 1–6. http://dx.doi.org/10.1155/2014/126905.
Повний текст джерелаXue, Changfeng, Robert Edmiston, and Shaozhong Deng. "Image Theory for Neumann Functions in the Prolate Spheroidal Geometry." Advances in Mathematical Physics 2018 (2018): 1–13. http://dx.doi.org/10.1155/2018/7683929.
Повний текст джерелаPincak, R. "Spheroidal geometry approach to fullerene molecules." Physics Letters A 340, no. 1-4 (June 2005): 267–74. http://dx.doi.org/10.1016/j.physleta.2005.04.023.
Повний текст джерелаVafeas, Panayiotis, Eleftherios Protopapas, and Maria Hadjinicolaou. "On the Analytical Solution of the Kuwabara-Type Particle-in-Cell Model for the Non-Axisymmetric Spheroidal Stokes Flow via the Papkovich–Neuber Representation." Symmetry 14, no. 1 (January 15, 2022): 170. http://dx.doi.org/10.3390/sym14010170.
Повний текст джерелаÖztürk, Yavuz, Ali Can Aktaş, and Bekir Aktaş. "A Z-gradient coil on spheroidal geometry." Journal of Magnetism and Magnetic Materials 552 (June 2022): 169169. http://dx.doi.org/10.1016/j.jmmm.2022.169169.
Повний текст джерелаAnastasiou, Eirini I., and Ioannis K. Chatjigeorgiou. "The Radiation Problem of a Submerged Oblate Spheroid in Finite Water Depth Using the Method of the Image Singularities System." Fluids 7, no. 4 (April 8, 2022): 133. http://dx.doi.org/10.3390/fluids7040133.
Повний текст джерелаSten, J. C. E., and E. A. Marengo. "Inverse Source Problem in an Oblate Spheroidal Geometry." IEEE Transactions on Antennas and Propagation 54, no. 11 (November 2006): 3418–28. http://dx.doi.org/10.1109/tap.2006.884292.
Повний текст джерелаGhosh, Mithun. "Dark matter halo with charge in pseudo-spheroidal geometry." Modern Physics Letters A 36, no. 25 (August 20, 2021): 2150178. http://dx.doi.org/10.1142/s0217732321501789.
Повний текст джерелаДисертації з теми "Spheroidal geometry"
Tuncer, Necibe Meir Amnon J. "A novel finite element discretization of domains with spheroidal geometry." Auburn, Ala., 2007. http://repo.lib.auburn.edu/Send%2011-10-07/TUNCER_NECIBE_24.pdf.
Повний текст джерелаKwok, T. T. "The influence of tumour geometry upon cellular response to cytotoxic agents : An in vitro study using multicellular spheroids." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372883.
Повний текст джерелаBernard, Benjamin. "On the Quantization Problem in Curved Space." Wright State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=wright1344829165.
Повний текст джерелаParry, Alan Reid. "Wave Dark Matter and Dwarf Spheroidal Galaxies." Diss., 2013. http://hdl.handle.net/10161/7125.
Повний текст джерелаWe explore a model of dark matter called wave dark matter (also known as scalar field dark matter and boson stars) which has recently been motivated by a new geometric perspective by Bray. Wave dark matter describes dark matter as a scalar field which satisfies the Einstein-Klein-Gordon equations. These equations rely on a fundamental constant Upsilon (also known as the ``mass term'' of the Klein-Gordon equation). Specifically, in this dissertation, we study spherically symmetric wave dark matter and compare these results with observations of dwarf spheroidal galaxies as a first attempt to compare the implications of the theory of wave dark matter with actual observations of dark matter. This includes finding a first estimate of the fundamental constant Upsilon.
In the introductory Chapter 1, we present some preliminary background material to define and motivate the study of wave dark matter and describe some of the properties of dwarf spheroidal galaxies.
In Chapter 2, we present several different ways of describing a spherically symmetric spacetime and the resulting metrics. We then focus our discussion on an especially useful form of the metric of a spherically symmetric spacetime in polar-areal coordinates and its properties. In particular, we show how the metric component functions chosen are extremely compatible with notions in Newtonian mechanics. We also show the monotonicity of the Hawking mass in these coordinates. Finally, we discuss how these coordinates and the metric can be used to solve the spherically symmetric Einstein-Klein-Gordon equations.
In Chapter 3, we explore spherically symmetric solutions to the Einstein-Klein-Gordon equations, the defining equations of wave dark matter, where the scalar field is of the form f(t,r) = exp(i omega t) F(r) for some constant omega in R and complex-valued function F(r). We show that the corresponding metric is static if and only if F(r) = h(r)exp(i a) for some constant a in R and real-valued function h(r). We describe the behavior of the resulting solutions, which are called spherically symmetric static states of wave dark matter. We also describe how, in the low field limit, the parameters defining these static states are related and show that these relationships imply important properties of the static states.
In Chapter 4, we compare the wave dark matter model to observations to obtain a working value of Upsilon. Specifically, we compare the mass profiles of spherically symmetric static states of wave dark matter to the Burkert mass profiles that have been shown by Salucci et al. to predict well the velocity dispersion profiles of the eight classical dwarf spheroidal galaxies. We show that a reasonable working value for the fundamental constant in the wave dark matter model is Upsilon = 50 yr^(-1). We also show that under precise assumptions the value of Upsilon can be bounded above by 1000 yr^(-1).
In order to study non-static solutions of the spherically symmetric Einstein-Klein-Gordon equations, we need to be able to evolve these equations through time numerically. Chapter 5 is concerned with presenting the numerical scheme we will use to solve the spherically symmetric Einstein-Klein-Gordon equations in our future work. We will discuss how to appropriately implement the boundary conditions into the scheme as well as some artificial dissipation. We will also discuss the accuracy and stability of the scheme. Finally, we will present some examples that show the scheme in action.
In Chapter 6, we summarize our results. Finally, Appendix A contains a derivation of the Einstein-Klein-Gordon equations from its corresponding action.
Dissertation
Книги з теми "Spheroidal geometry"
Jackson, J. E. Sphere, Spheroid and Projections for Surveyors. Sheridan House Inc, 1987.
Знайти повний текст джерелаЧастини книг з теми "Spheroidal geometry"
Coutelieris, F. A. "The effect of geometry and axial orientation of spheroidal particles on the adsorption rate in a granular porous medium." In Characterization of Porous Solids VI, Proceedings of the 6th International Symposium on the Characterization of Porous Solids (COPS-VI), 745–51. Elsevier, 2002. http://dx.doi.org/10.1016/s0167-2991(02)80205-1.
Повний текст джерелаMALING, D. H. "The geometry of the spheroid." In Coordinate Systems and Map Projections, 64–79. Elsevier, 1992. http://dx.doi.org/10.1016/b978-0-08-037233-4.50009-1.
Повний текст джерелаTannous, Katia, and Fillipe de Souza Silva. "Particle Shape Analysis Using Digital Image Processing." In Encyclopedia of Information Science and Technology, Fourth Edition, 1331–43. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-2255-3.ch114.
Повний текст джерелаTannous, Katia, and Fillipe de Souza Silva. "Particle Shape Analysis Using Digital Image Processing." In Advanced Methodologies and Technologies in Artificial Intelligence, Computer Simulation, and Human-Computer Interaction, 377–91. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-7368-5.ch028.
Повний текст джерелаSohor, Andrii. "A PRIORI RESEARCH RELATED TO THE CALCULATION OF THE REGIONAL ELLIPSOID FOR UKRAINE AND ITS EFFECTIVENESS." In Theoretical and practical aspects of the development of modern scientific research. Publishing House “Baltija Publishing”, 2022. http://dx.doi.org/10.30525/978-9934-26-195-4-13.
Повний текст джерелаТези доповідей конференцій з теми "Spheroidal geometry"
Petkov, T., K. F. Ren, J. C. Loudet, and B. Pouligny. "Nonlinear Oscillatory States of Spheroidal Particles in a Two-Beam Trap Geometry." In Optical Trapping Applications. Washington, D.C.: OSA, 2017. http://dx.doi.org/10.1364/ota.2017.ots1d.2.
Повний текст джерелаBorrelli, Francesca, Amedeo Capozzoli, Claudio Curcio, and Angelo Liseno. "A NFFF approach using spheroidal wave functions in a cylindrical scanning geometry." In 2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI). IEEE, 2021. http://dx.doi.org/10.1109/aps/ursi47566.2021.9703838.
Повний текст джерелаBorrelli, Francesca, Amedeo Capozzoli, Claudio Curcio, and Angelo Liseno. "Numerical results for antenna characterization in a cylindrical scanning geometry using a spheroidal modelling." In 2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS). IEEE, 2021. http://dx.doi.org/10.1109/comcas52219.2021.9629098.
Повний текст джерелаWei, Guowu, and Jian S. Dai. "Linkages That Transfer Rotations to Radially Reciprocating Motion." In ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/detc2010-28678.
Повний текст джерелаGERGIDIS, L. N., D. KOUROUNIS, S. MAVRATZAS, and A. CHARALAMBOPOULOS. "ON THE SENSITIVITY OF THE ACOUSTIC SCATTERING PROBLEM IN PROLATE SPHEROIDAL GEOMETRY WITH RESPECT TO WAVENUMBER AND SHAPE VIA VEKUA TRANFORMATION - THEORY AND NUMERICAL RESULTS." In Proceedings of the 8th International Workshop on Mathematical Methods in Scattering Theory and Biomedical Engineering. WORLD SCIENTIFIC, 2008. http://dx.doi.org/10.1142/9789812814852_0004.
Повний текст джерелаChen, Howard, and Ibrahim T. Ozbolat. "Development of a Multi-Arm Bioprinter for Hybrid Tissue Engineering." In ASME 2013 International Manufacturing Science and Engineering Conference collocated with the 41st North American Manufacturing Research Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/msec2013-1025.
Повний текст джерелаFarafonov, V. G., V. I. Ustimov, and A. E. Farafonova. "OPTICAL RESONANCES OF A PLASMA NATURE IN TWO-LAYER NANOSPHEROIDS." In MODELING AND SITUATIONAL MANAGEMENT THE QUALITY OF COMPLEX SYSTEMS. Saint Petersburg State University of Aerospace Instrumentation, 2021. http://dx.doi.org/10.31799/978-5-8088-1558-2-2021-2-47-50.
Повний текст джерелаLugovtsov, Andrei E., Alexander V. Priezzhev, and Sergei Y. Nikitin. "Light scattering by biological spheroidal particles in geometric optics approximation." In SPIE Proceedings, edited by Qingming Luo, Lihong V. Wang, Valery V. Tuchin, and Min Gu. SPIE, 2007. http://dx.doi.org/10.1117/12.741344.
Повний текст джерелаDeng, Tao, James R. Cournoyer, James H. Schermerhorn, Joleyn Balch, and Margaret L. Blohm. "Manipulating Shape and Size of Nanoparticles With Plasma Field." In ASME 2008 International Manufacturing Science and Engineering Conference collocated with the 3rd JSME/ASME International Conference on Materials and Processing. ASMEDC, 2008. http://dx.doi.org/10.1115/msec_icmp2008-72293.
Повний текст джерелаPfister, Felix M. J., and Sunil K. Agrawal. "Analytical Dynamics of Unrooted Multibody-Systems With Symmetries." In ASME 1998 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/detc98/mech-5869.
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