Literatura académica sobre el tema "Energy curvature"
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Artículos de revistas sobre el tema "Energy curvature"
Oakley, William S. "Resolving the electron-positron mass annihilation mystery". International Journal of Scientific Reports 1, n.º 6 (22 de octubre de 2015): 250. http://dx.doi.org/10.18203/issn.2454-2156.intjscirep20150954.
Texto completoHassan, M. A., Mohd Hamdi Abdul Shukor, Sadjad Naderi y F. Zahedi. "Effect of Curvature and Thickness of Aluminum Shells on the Energy Absorption in Low Velocity Impact". Advanced Materials Research 488-489 (marzo de 2012): 40–45. http://dx.doi.org/10.4028/www.scientific.net/amr.488-489.40.
Texto completoSIMANCA, SANTIAGO R. "PRECOMPACTNESS OF THE CALABI ENERGY". International Journal of Mathematics 07, n.º 02 (abril de 1996): 245–54. http://dx.doi.org/10.1142/s0129167x96000141.
Texto completoWang, Dan, Zhili Hu, Gang Peng y Yajun Yin. "Surface Energy of Curved Surface Based on Lennard-Jones Potential". Nanomaterials 11, n.º 3 (9 de marzo de 2021): 686. http://dx.doi.org/10.3390/nano11030686.
Texto completoSmith, Keith T. "Curvature with interacting dark energy". Science 371, n.º 6536 (25 de marzo de 2021): 1329.5–1330. http://dx.doi.org/10.1126/science.371.6536.1329-e.
Texto completoCárdenas, Víctor H. y Roberto G. Perez. "Holographic dark energy with curvature". Classical and Quantum Gravity 27, n.º 23 (8 de noviembre de 2010): 235003. http://dx.doi.org/10.1088/0264-9381/27/23/235003.
Texto completoBalakin, Alexander B., Diego Pav n, Dominik J. Schwarz y Winfried Zimdahl. "Curvature force and dark energy". New Journal of Physics 5 (4 de julio de 2003): 85. http://dx.doi.org/10.1088/1367-2630/5/1/385.
Texto completoDurand, M., P. Schuck y X. Vi�as. "On the nuclear curvature energy". Zeitschrift f�r Physik A Hadrons and Nuclei 346, n.º 2 (junio de 1993): 87–100. http://dx.doi.org/10.1007/bf01294624.
Texto completoZhang, Xuhui, Yan Guo, Fulin Zhu, Xiaoyu Chen, Hao Tian y Hengtao Xu. "A Linear-Arc Composite Beam Piezoelectric Energy Harvester Modeling and Finite Element Analysis". Micromachines 13, n.º 6 (29 de mayo de 2022): 848. http://dx.doi.org/10.3390/mi13060848.
Texto completoSaffari, H., R. Tabatabaei y S. H. Mansouri. "Vibration Analysis of Circular Arch Element Using Curvature". Shock and Vibration 15, n.º 5 (2008): 481–92. http://dx.doi.org/10.1155/2008/149393.
Texto completoTesis sobre el tema "Energy curvature"
Ligo, Richard G. "Conformal transformations, curvature, and energy". Diss., University of Iowa, 2017. https://ir.uiowa.edu/etd/5550.
Texto completoVikström, Anton. "Curvature-Induced Energy Band Tilting in Finite-Length Carbon Nanotubes". Thesis, Umeå universitet, Institutionen för fysik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-49673.
Texto completoEnergibandstrukturen för kolnanorör ges av tvärsnitt av grafens Dirac-koner nära K- och K'-punkterna. Medelst andra ordningens störningsteori och en tight-binding-modell med närmaste-granne-approximationen härleds de kurvaturinducerade korrektionerna till den grafenbaserade effektiva modellen. Utöver det redan kända Dirac-punkt-skiftet så visas kurvaturen orsaka inte bara en förvrängning av Dirac-konen, liktydigt med en mild kompression och en korrektion till den övergripande fermihastigheten, utan också en lutning av Dirac-konen och de associerade nanorörsenergibanden. Denna lutning resulterar i en hastighetsasymmetri för vänster- och högergående vågor och två olika sorters excitationer, vilket tillåter för varierande degeneration i samma prov. Tidigare experiment har visat oregelbundenheter i nivådegenerationen och bör omprövas i denna kontext.
Venkataraman, Kartik. "Animating skin with wrinkles using curvature evolution and energy minimization /". Diss., Digital Dissertations Database. Restricted to UC campuses, 2008. http://uclibs.org/PID/11984.
Texto completoKuyrukcu, Halil. "Kaluza-klein Reduction Of Higher Curvature Gravity Models". Phd thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/3/12611748/index.pdf.
Texto completoVincent, Aaron. "Curvature spectra and nongaussianities in the Roulette Inflation model of the early universe". Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=21998.
Texto completoNous etudions le modele d'inflation de type "Roulette", un modele base sur la relaxation de modules de Kahler sur une variete Calabi-Yau, ayant un terme cinetique non-trivial et provenant de la theorie des cordes de Type IIB, dans le contexte de la compactification a grand volume. Nous demontrons que l'influence des perturbations d'entropie peuvent compter pour jusqu'a 90% de Ps(k) a l'echelle de COBE. Nous demontrons que le resultat effectif provenant de la theorie a un seul champ surestime ns; un calcul complet predit un spectre decale vers le rouge 0.92 < ns < 0.98. Nous calculons finalement la non-gaussianite des perturbations adiabatiques resultant de leur evolution a l'exterieur du rayon de Hubble, et arrivons a des predictions de fNL ≪ 1, ce qui ne serait pas mesurable par les observations des prochaines annees. Toutefois, s'il s'avere possible de detecter un bispectre dependant du nombre d'onde k, ceci servirait d'excellent moyen de diff´erentier divers modeles d'inflation.
Khoo, Bee Jin. "An experimental examination of ideas in the curvature elasticity of lyotropic liquid crystals". Thesis, Imperial College London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244046.
Texto completoLutman, Alberto. "Impact of the wakefields and of an initial energy curvature on a Free Electron Laser". Doctoral thesis, Università degli studi di Trieste, 2010. http://hdl.handle.net/10077/3678.
Texto completoFor an X-ray free electron laser (FEL), a high-quality electron bunch with low emittance, high peak current and energy is needed. During the phases of acceleration, bunch compression and transportation, the electron beam is subject to radio frequency curvature and to wakefields effects. Thus, the energy profile of the electron beam can present a parabolic profile, which has important electromagnetic effects on the FEL process. The quality of the electron beam is also degraded by the interaction with the low-gap undulator vacuum chamber. In our work we first analyze this interaction, deriving a formula to evaluate the longitudinal and the transversal wakefields for an elliptical cross section vacuum chamber, obtaining accurate results in the short range. Subsequently within the Vlasov-Maxwell one-dimensional model, we derive the Green functions necessary to evaluate the radiation envelope, having as initial conditions both an energy chirp and curvature on the electrons and eventually an initial bunching, which is useful to treat the harmonic generation FEL cascade configuration. This allows to study the impact of the elecron beam energy profile on the FEL performance. Using the derived Green functions we discuss FEL radiation properties such as bandwidth, frequency shift, frequency chirp and velocity of propagation. Finally, we propose a method to achieve ultra-short FEL pulses using a frequency chirp on the seed laser and a suitable electron energy profile.
XXII Ciclo
1980
Melo, Marcelo Ferreira de. "Funcionais paramÃtricos elÃpticos em variedades riemannianas". Universidade Federal do CearÃ, 2009. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=4102.
Texto completoConselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico
Neste trabalho, consideramos funcionais paramÃtricos elÃpticos como generalizaÃÃes naturais para o clÃssico funcional Ãrea. Calculamos a primeira variaÃÃo de tais funcionais e, a partir da equaÃÃo de Euler-Lagrange, definimos a curvatura mÃdia anisotrÃpica de uma hipersuperfÃcie imersa em uma variedade Riemanniana como generalizaÃÃo natural da curvatura mÃdia usual. Em seguida, estabelecemos a fÃrmula da segunda variaÃÃo e classificamos as hipersuperfÃcies rotacionalmente simÃtricas que possuem curvatura mÃdia anisotrÃpica constante. A fim de compreender a estabilidade dos exemplo rotacionais,deduzimos a primeira e a segunda fÃrmulas de Minkowski. AlÃm disso, no contexto anisotrÃpico, apresentamos as equaÃÃes fundamentais de Weingarten, Codazzi e Gauss e, por fim, estudamos a harmonicidade da aplicaÃÃo de Gauss.
It is stated that critical points of a parametric elliptic functional in a Riemannian manifold are hypersurfaces with prescrebed anisotropic mean curvature. We prove that the anisotropic Gauss map of surfaces immersed in Euclidean space with constant anisotropic mean curvature is a harmonic map. In the case of rotatioally invariat functionals in some homogeneous three-dimensional ambients, we present a abridged version of a existence result for constant anisotropic mean curvature surfaces as cylinders, spheres, tori and annuli corresponding to the anisotropic analogs of onduloids and nodoids. In the Euclidean case M = R3, examples of stable critical points are provided by the Wulff shapes associated to functional F. Paralleling the case of constant curvature mean spheres, a characterization of Wulff shapes is provided, which answers affirmatively a question posed by M. Koiso and B. Parmer in [13].
Abdellatif, Ahmad Fouad Abdalwahab [Verfasser]. "On metric-affine gravitational theories with a Lagrangian quadratic in the curvature and the energy-momentum problem / Ahmad Fouad Abdalwahab Abdellatif". Greifswald : Universitätsbibliothek Greifswald, 2012. http://d-nb.info/1019426683/34.
Texto completoFilho, Francisco de Assiss Benjamim. "A partial answer to the CPE conjecture, diameter estimates and manifolds with constant energy". Universidade Federal do CearÃ, 2015. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=14748.
Texto completoConselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico
Esta tese està dividida em quatro partes. Na primeira delas estudaremos pontos crÃticos do funcional curvatura escalar total restrito ao espaÃo das mÃtricas de curvatura escalar constante e volume unitÃrio. Provaremos que sob certas condiÃÃes integrais convenientes os pontos crÃticos de tal funcional sÃo variedades de Einstein provando assim a conjectura dos pontos crÃticos neste caso. Na segunda parte, veremos duas estimativas para o primeiro autovalor do Laplaciano de uma variedade compacta com curvatura de Ricci limitada por baixo por uma constante. As estimativas que obtemos melhoram a estimativa correspondente provada por Li e Yau (1980). Na terceira parte, estamos interessados em estimar o diÃmetro de hipersuperfÃcies mÃnimas da esfera. A estimativa que encontramos depende apenas do primeiro autovalor do Laplaciano da hipersuperfÃcie considerada. Para superfÃcies imersas na esfera de dimensÃo trÃs, obtemos uma estimativa ligeiramente melhor do que a obtida no caso de dimensÃo alta. Na Ãltima parte, introduzimos o conceito de variedade de energia constante e provamos que a esfera e o toro sÃo as Ãnicas superfÃcies que tÃm energia constante. Em dimensÃo mais alta a situaÃÃo à bem diferente uma vez que o produto de uma esfera por qualquer variedade compacta tem energia constante. Entretanto, se impusermos uma condiÃÃo sobre a curvatura de Ricci, à possÃvel caracterizar a esfera tambÃm neste caso. Em seguida, aplicamos as informa-ÃÃes obtidas ao estudo de hipersuperfÃcies da esfera provando alguns resultados de rigidez desde que a hipersuperfÃcie tenha energia constante.
This thesis is divided into four parts. In the first one we study the critical points of the total scalar curvature functional restricted to the space of metrics with constant scalar curvature and volume one. We shall prove that under certain suitable integral conditions the critical points of such functional are Einstein manifolds proving this way the critical point equation conjecture in this case. In the second part, we will provide an estimate for the first eigenvalue of the Laplacian of a compact manifolds with Ricci curvature bounded from below by a constant. The estimate we obtain improves the corresponding estimate proved by Li and Yau (1980). In the third part, we are interested in to estimate the diameter of minimal hypersurfaces of the sphere. The estimate we get depends only on the first eigenvalue of the Laplacian of the considered hypersurface. For immersed surfaces on the three dimensional sphere, we obtain an estimate slightly better than the one obtained in the case of higher dimension. In the last part, we introduce the concept of manifolds with constant energy and prove that the sphere and the torus are the only compact surfaces that have constant energy. For higher dimension, the situation is very different sine the product of the sphere with any compact manifold has constant energy. Nevertheless, if we impose a condition over the Ricci curvature it is possible to characterize the sphere also in this case. After that, we apply the informations obtained to the study of hypersurfaces of the sphere proving some rigidity results provided that the hypersurfaces has constant energy.
Libros sobre el tema "Energy curvature"
Cristina, Jan. Non-smooth curvature and the energy of frames. Helsinki: Suomalainen Tiedeakatemia, 2013.
Buscar texto completoPopa, Cosmin Radu. Superior-Order Curvature-Correction Techniques for Voltage References. Springer London, Limited, 2009.
Buscar texto completoPopa, Cosmin Radu. Superior-Order Curvature-Correction Techniques for Voltage References. Springer, 2014.
Buscar texto completoSuperiororder Curvaturecorrection Techniques For Voltage References. Springer, 2009.
Buscar texto completoSaha, Prasenjit y Paul A. Taylor. The Expanding Universe. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198816461.003.0008.
Texto completoDeruelle, Nathalie y Jean-Philippe Uzan. Matter in curved spacetime. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198786399.003.0043.
Texto completoKennefick, Daniel. Three and a Half Principles: The Origins of Modern Relativity Theory. Editado por Jed Z. Buchwald y Robert Fox. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199696253.013.27.
Texto completoSteane, Andrew M. Relativity Made Relatively Easy Volume 2. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780192895646.001.0001.
Texto completoMarques, Marcia Alessandra Arantes, ed. Avanços em Computação Aplicada a Fluidodinâmica Computacional. Bookerfield Editora, 2021. http://dx.doi.org/10.53268/bkf21120500.
Texto completoCapítulos de libros sobre el tema "Energy curvature"
Cunillera, Francesc. "Gauss-Bonnet Curvature Corrections and the Absence of de Sitter Vacua". En Dark Energy, 171–87. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-21468-4_9.
Texto completoJeong, Sinwoo y Hong Hee Yoo. "Vibration-Based Uniform Curvature Piezoelectric Energy Harvester". En Vibration Engineering for a Sustainable Future, 207–10. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-46466-0_28.
Texto completoKumar, Yogesh y S. Somorendro Singh. "Curvature Effect on QGP Equation of State". En XXII DAE High Energy Physics Symposium, 867–69. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73171-1_211.
Texto completoGrieder, Peter K. F. "Temporal Structure of Showers and Front Curvature". En Exentsive Air Showers and High Energy Phenomena, 399–418. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-76941-5_9.
Texto completoNitsche, Johannes C. C. "Periodic Surfaces That are Extremal for Energy Functionals Containing Curvature Functions". En Statistical Thermodynamics and Differential Geometry of Microstructured Materials, 69–98. New York, NY: Springer New York, 1993. http://dx.doi.org/10.1007/978-1-4613-8324-6_6.
Texto completoIvancic, P. C. y M. Xiao. "Cervical Spine Curvature during Simulated Rear Crashes with Energy-Absorbing Seat". En IFMBE Proceedings, 485–88. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-14515-5_124.
Texto completoCaldiroli, Paolo y Roberta Musina. "S 2-type Parametric Surfaces with Prescribed Mean Curvature and Minimal Energy". En Nonlinear Equations: Methods, Models and Applications, 61–77. Basel: Birkhäuser Basel, 2003. http://dx.doi.org/10.1007/978-3-0348-8087-9_5.
Texto completoDe Laurentis, M., Lorenzo Fatibene y Mauro Francaviglia. "Dark Energy from Curvature and Ordinary Matter Fitting Ehlers-Pirani-Schild: Foundational Hypothesis". En Springer Proceedings in Physics, 127–40. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-00297-2_13.
Texto completoGarvandha, Mahesh, V. K. Narla, Dharmendra Tripathi y O. Anwar Bég. "Modelling the Impact of Melting and Nonlinear Radiation on Reactive Buongiorno Nanofluid Boundary Layer Flow from an Inclined Stretching Cylinder with Cross-diffusion and Curvature Effects". En Energy Systems and Nanotechnology, 279–306. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-1256-5_15.
Texto completoÖzdemir, E., L. Kiesewetter, K. Antorveza, T. Cheng, S. Leder, D. Wood y A. Menges. "Towards Self-shaping Metamaterial Shells:". En Proceedings of the 2021 DigitalFUTURES, 275–85. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-5983-6_26.
Texto completoActas de conferencias sobre el tema "Energy curvature"
Prosekin, Anton, Stanislav R. Kelner y Felix A. Aharonian. "On the synchro-curvature radiation". En HIGH ENERGY GAMMA-RAY ASTRONOMY: 6th International Meeting on High Energy Gamma-Ray Astronomy. Author(s), 2017. http://dx.doi.org/10.1063/1.4969038.
Texto completoHauenstein, Jacob D. y Timothy S. Newman. "Toward Energy Efficient Curvature in Range Images". En 2022 IEEE International Symposium on Multimedia (ISM). IEEE, 2022. http://dx.doi.org/10.1109/ism55400.2022.00059.
Texto completoZaza, Osmanov, Felix A. Aharonian, Werner Hofmann y Frank Rieger. "Centrifugally induced curvature drift instability in AGN". En HIGH ENERGY GAMMA-RAY ASTRONOMY: Proceedings of the 4th International Meeting on High Energy Gamma-Ray Astronomy. AIP, 2008. http://dx.doi.org/10.1063/1.3076708.
Texto completoBurgess, Cliff y Martin Kamela. "Constant curvature effective actions". En The 20th annual meeting of the Montreal-Rochester-Syracuse-Toronto (MRST) conference on high energy physics:Toward the theory of everything. American Institute of Physics, 1998. http://dx.doi.org/10.1063/1.57077.
Texto completoVoisin, Guillaume, Silvano Bonazzola y Fabrice Mottez. "Curvature radiation from a quantum-electrodynamics point of view". En HIGH ENERGY GAMMA-RAY ASTRONOMY: 6th International Meeting on High Energy Gamma-Ray Astronomy. Author(s), 2017. http://dx.doi.org/10.1063/1.4969039.
Texto completoLiu, Liang-Chun, Mei-Jiau Huang y Ronggui Yang. "Curvature Effect on the Thermal Conductivity of Nanowires". En ASME 2008 Heat Transfer Summer Conference collocated with the Fluids Engineering, Energy Sustainability, and 3rd Energy Nanotechnology Conferences. ASMEDC, 2008. http://dx.doi.org/10.1115/ht2008-56339.
Texto completoSahoo, Bindusar y Aalok Misra. "Non-Supersymmetric Extremal Black Holes in Curvature squared N = 2 Supergravity". En THEORETICAL HIGH ENERGY PHYSICS: International Workshop on Theoretical High Energy Physics. AIP, 2007. http://dx.doi.org/10.1063/1.2803806.
Texto completoMIELKE, ECKEHARD W., FJODOR V. KUSMARTSEV y FRANZ E. SCHUNCK. "INFLATION, BIFURCATIONS OF NONLINEAR CURVATURE LAGRANGIANS AND DARK ENERGY". En Proceedings of the MG11 Meeting on General Relativity. World Scientific Publishing Company, 2008. http://dx.doi.org/10.1142/9789812834300_0039.
Texto completoAbood, Habeeb M. y Farah Hassan Al-Hussaini. "Constant curvature of a locally conformal almost cosymplectic manifold". En CURRENT TRENDS IN RENEWABLE AND ALTERNATE ENERGY. Author(s), 2019. http://dx.doi.org/10.1063/1.5095088.
Texto completoTalal, A. A., W. H. Khaleel, B. N. Hassan, K. S. Abdul-Razzaq y A. A. Dawood. "Effect of horizontal curvature on reinforced concrete deep beams". En 3RD INTERNATIONAL CONFERENCE ON ENERGY AND POWER, ICEP2021. AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0107961.
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