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Статті в журналах з теми "Collapse models"
Halevi, Goni, Belinda Wu, Philipp Mösta, Ore Gottlieb, Alexander Tchekhovskoy, and David R. Aguilera-Dena. "Density Profiles of Collapsed Rotating Massive Stars Favor Long Gamma-Ray Bursts." Astrophysical Journal Letters 944, no. 2 (February 1, 2023): L38. http://dx.doi.org/10.3847/2041-8213/acb702.
Повний текст джерелаPavlík, Václav, and Ladislav Šubr. "The hunt for self-similar core collapse." Astronomy & Astrophysics 620 (December 2018): A70. http://dx.doi.org/10.1051/0004-6361/201833854.
Повний текст джерелаReznik, Рetro, Sergiy Grebenchuk, Roman Koreniev, and Vitaliy Bondarenko. "Research of the specific steel shells progressive collapse prevention." ACADEMIC JOURNAL Series: Industrial Machine Building, Civil Engineering 1, no. 52 (July 5, 2019): 58–64. http://dx.doi.org/10.26906/znp.2019.52.1676.
Повний текст джерелаOtt, Christian D., Erik Schnetter, Adam Burrows, Eli Livne, Evan O'Connor, and Frank Löffler. "Computational models of stellar collapse and core-collapse supernovae." Journal of Physics: Conference Series 180 (July 1, 2009): 012022. http://dx.doi.org/10.1088/1742-6596/180/1/012022.
Повний текст джерелаGhirardi, Gian Carlo, and Raffaele Romano. "Collapse models and perceptual processes." Journal of Physics: Conference Series 504 (April 14, 2014): 012022. http://dx.doi.org/10.1088/1742-6596/504/1/012022.
Повний текст джерелаDowker, Fay, and Isabelle Herbauts. "Simulating causal wavefunction collapse models." Classical and Quantum Gravity 21, no. 12 (May 19, 2004): 2963–79. http://dx.doi.org/10.1088/0264-9381/21/12/011.
Повний текст джерелаThompson, M. C. "Rapidly Rotating Core-Collapse Models." Publications of the Astronomical Society of Australia 6, no. 2 (1985): 214–16. http://dx.doi.org/10.1017/s1323358000018130.
Повний текст джерелаJadamec, Margarete A., Donald L. Turcotte, and Peter Howell. "Analytic models for orogenic collapse." Tectonophysics 435, no. 1-4 (May 2007): 1–12. http://dx.doi.org/10.1016/j.tecto.2007.01.007.
Повний текст джерелаHartmann, Lee, Nuria Calvet, and Alan Boss. "Sheet Models of Protostellar Collapse." Astrophysical Journal 464 (June 1996): 387. http://dx.doi.org/10.1086/177330.
Повний текст джерелаBrax, Ph, R. Rosenfeld, and D. A. Steer. "Spherical collapse in chameleon models." Journal of Cosmology and Astroparticle Physics 2010, no. 08 (August 23, 2010): 033. http://dx.doi.org/10.1088/1475-7516/2010/08/033.
Повний текст джерелаДисертації з теми "Collapse models"
Ferialdi, Luca. "Non-Markovian collapse models." Doctoral thesis, Università degli studi di Trieste, 2010. http://hdl.handle.net/10077/3582.
Повний текст джерелаWe introduce the measurement problem in quantum mechanics and we briefly discuss the solutions proposed in literature. We then focus our attention on models of spontaneous wavefunction collapse. We describe the two most popular models (GRW, CSL) and list other proposals. We analyze in detail a third collapse model (QMUPL), which is particularly simple (but physically meaningful) to be studied in great mathematical detail. We discuss its main properties. We also describe a "finite temperature" version of this model, which includes dissipative terms. These models are Markovian, i.e. the collapse mechanism is driven by a white noise. Since the ultimate goal is to identify the noise responsible for the collapse with a random field in Nature, it becomes important to study non-Markovian generalizations of collapse models, where the collapsing field has a generic correlation function, likely with a cut off at high frequencies. Models of this kind have already been studied, as a generalization of the CSL model. In this thesis we describe in mathematical detail the generalization of the QMUPL model to non-Markovian noises. After having proved, under suitable conditions, the separation of the center-of-mass and relative motions for a generic ensemble of particles, we focus our analysis on the time evolution of the center of mass of an isolated system (free particle case). We compute the explicit expression of the Green's function via the path integral formalism, for a generic Gaussian noise. We analyze in detail the case of an exponential correlation function, providing the exact analytical solution. We next study the time evolution of average quantities, such as the mean position, momentum (which satisfy Ehrefest's theorem) and energy (which is not conserved like in the other collapse models). We also compute the non-Markovian master equation for an harmonic oscillator, according to this model, and compare its structure to the well-known Lindblad structure of Markovian open quantum systems. We eventually specialize to the case of Gaussian wave functions, and prove that all basic facts about collapse models (reduction process, amplification mechanism, etc.), which are known to be true in the white noise case, hold also in the more general case of non-Markovian dynamics. We further analyze the evolution of Gaussian wave function according to the three different realizations of the QMUPL model so far developed (Markovian, non-Markovian and "finite temperature"), comparing their fundamental features. Finally, by analyzing different localization criteria, we set new lower bounds on the parameters of these models, and we compare them with the upper bounds coming from known experimental data.
Nel primo capitolo si introduce il problema della misura in Meccanica Quantistica e si discutono brevemente le soluzioni proposte nella letteratura. Nel capitolo 2 si discutono i modelli di collasso spontaneo della funzione d'onda, con particolare attenzione per i modelli GRW e CSL; si elencano altri modelli. Si analizza in dettaglio anche il modello di riduzione QMUPL, il quale è particolarmente semplice (ma fisicamente significativo) da poter essere studiato dettagliatamente dal punto di vista matematico. Si discutono le sue proprietà principali. Si descrive inoltre una versione "a temperatura finita" di questo modello, che include termini dissipativi. Questi modelli sono Markoviani, ovvero il meccanismo di collasso è guidato da un rumore bianco. Poichè parte significativa della ricerca consiste nell'identificare il rumore responsabile del collasso con un campo stocastico esistente in Natura, diventa importante studiare le generalizzazioni non-Markoviane dei modelli di riduzione, in cui il campo di collasso ha una funzione di correlazione generale, probabilmente con un cutoff ad alte frequenze. Modelli di questo tipo, come la generalizzazione del modello CSL, sono già stati studiati. In questa tesi si descrive in dettaglio la generalizzazione a rumori non-Markoviani del modello QMUPL. Dopo aver provato, sotto particolari condizioni, la separazione del moto del centro di massa da quello relativo per un generico ensemble di particelle, si pone attenzione all'evoluzione temporale del centro di massa di un sistema isolato (particella libera). Si dà l'espressione esplicita per la funzione di Green attraverso il formalismo del path-integral, per un generico rumore Gaussiano. Si analizza in particolare il caso della funzione di correlazione esponenziale, fornendo la soluzione analitica esatta delle equazioni. Successivamente si studia l'evoluzione dei valori medi, in particolare della posizione, del momento (che soddsfa il teorema di Ehrenfest) e dell'energia (che non è conservata come negli altri modelli di riduzione). Si scrive inoltre la master equation non-Markoviana per un oscillatore armonico per questo modello, e si confronta la sua struttura con le ben nota struttura di Lindblad dei sistemi quantistici aperti Markoviani. Ci si specializza al caso di funzioni d'onda Gaussiane, e si prova che tutte le nozioni di base sui modelli di riduzione (processo di collasso, meccanismo di amplificazione, ecc.), che sono note essere vere nel caso Markoviano, valgono anche nel caso più generale di dinamiche non-Markoviane. Infine, si analizza l'evoluzione di funzioni d'onda Gaussiane secondo le tre differenti realizzazioni del modello QMUPL finora analizzate (Markoviana, non-Markoviana e "a temperatura finita"), confrontando le loro caratteristiche fondamentali. Inoltre, analizzando differenti criteri di localizzazione, si individano nuovi limiti inferiori per i parametri di questi modelli, e si confrontano con i limiti superiori che vengono da dati sperimentali noti.
XXII Ciclo
1982
Veal, Andrew Richard. "Models of polymer adsorption and collapse." Thesis, University of Oxford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.277107.
Повний текст джерелаAburihan, Mahmoud. "Time-dependent self-similar star formation and collapse models." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0002/MQ42578.pdf.
Повний текст джерелаDonadi, Sandro. "Electromagnetic Radiation Emission and Flavour Oscillations in Collapse Models." Doctoral thesis, Università degli studi di Trieste, 2014. http://hdl.handle.net/10077/9961.
Повний текст джерелаIn order to solve the measurement problem, collapse models modify the Schroedinger dynamics by adding non linear and stochastic terms. Collapse models provide different predictions compare to Quantum mechanics. In this thesis we focus on two phenomena where the predictions of quantum mechanics and collapse models are different: the electromagnetic radiation emission from charged systems and the flavour oscillations. We analysed both of them and obtained the quantitative deviations from standard quantum behaviour.
Al fine di risolvere il problema della misura, i modelli di collasso spontaneo della funzione d'onda modificano la dinamica data dall'equazione di Schroedinger aggiungendo termini non lineari e stocastici. I modelli di collasso forniscono previsioni differenti rispetto alla meccanica quantistica. In questa tesi studieremo due fenomeni dove le predizioni della meccanica quantistica e dei modelli di collasso sono diverse: l'emissione di radiazione elettromagnetica da sistemi elettricamente non neutri e le oscillazioni dei sapori. Analizzeremo entrambi i fenomeni al fine di ottenere deviazioni quantitative dal comportamento quantistico standard.
XXVI Ciclo
1985
Orifici, Adrian Cirino, and adrian orifici@student rmit edu au. "Degradation Models for the Collapse Analysis of Composite Aerospace Structures." RMIT University. Aerospace, Mechanical and Manufacturing Engineering, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080619.090039.
Повний текст джерелаClark, Paul Campbell. "The onset of gravitational collapse in molecular clouds." Thesis, University of St Andrews, 2005. http://hdl.handle.net/10023/12945.
Повний текст джерелаGaudreault, Mathieu. "Collapse transition of SARWs with hydrophobic interaction on a two dimensional lattice." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=112623.
Повний текст джерелаWebster, Mort David, Jeffery Scott, Andrei P. Sokolov, and Peter H. Stone. "Estimating Probability Distributions from Complex Models with Bifurcations: The Case of Ocean Circulation Collapse." MIT Joint Program on the Science and Policy of Global Change, 2006. http://hdl.handle.net/1721.1/32540.
Повний текст джерелаAbstract in HTML and technical report in PDF available on the Massachusetts Institute of Technology Joint Program on the Science and Policy of Global Change website (http://mit.edu/globalchange/www/).
This research was supported in part by the Methods and Models for Integrated Assessments Program of the National Science Foundation, Grant ATM-9909139, by the Office of Science (BER), U.S. Department of Energy, Grant Nos. DE-FG02-02ER63468 and DE-FG02-93ER61677, and by the MIT Joint Program on the Science and Policy of Global Change (JPSPGC).
Harry, Ofonime Akpan. "Behaviour of reinforced concrete frame structure against progressive collapse." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/29623.
Повний текст джерелаReyes, Juan Daniel Bojowald Martin. "Spherically symmetric loop quantum gravity connections to two-dimensional models and applications to gravitational collapse /." [University Park, Pa.] : Pennsylvania State University, 2009. http://etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-4758/index.html.
Повний текст джерелаКниги з теми "Collapse models"
Falzon, Brian G. An introduction to modelling buckling and collapse. Glasgow: NAFEMS, 2006.
Знайти повний текст джерелаGarber, Peter M. The operation and collapse of fixed exchange rate regimes. Cambridge, MA: National Bureau of Economic Research, 1994.
Знайти повний текст джерелаGarber, Peter M. The operation and collapse of fixed exchange rate regimes. Cambridge, Mass: National Bureau of Economic Research, 1994.
Знайти повний текст джерелаGarber, Peter M. The operation and collapse of fixed exchange rate regimes. Stockholm: Stockholm University, Institute for International Economic Studies, 1995.
Знайти повний текст джерелаDolinskai︠a︡, Irina. Explaining Russia's output collapse: Aggregate sources and regional evidence. [Washington, D.C.]: International Monetary Fund, IMF Institute, 2001.
Знайти повний текст джерелаEmergence and collapse of early villages: Models of central mesa verde archaeology. Berkeley: University of California Press, 2012.
Знайти повний текст джерелаThe dynamics of apocalypse: A systems simulation of the classic Maya collapse. Albuquerque: University of New Mexico Press, 1985.
Знайти повний текст джерелаFibich, Gadi. Backscattering and nonparaxiality arrest collapse of damped nonlinear waves. Hampton, VA: Institute for Computer Applications in Science and Engineering, NASA Langley Research Center, 2002.
Знайти повний текст джерелаW, Cooper Russell. Financial collapse and active monetary policy: A lesson from the Great Depression. [Minneapolis, Minn.]: Federal Reserve Bank of Minneapolis, 2001.
Знайти повний текст джерелаCalvo, Guillermo A. Explaining sudden stops, growth collapse and BOP crises: The case of distortionary output taxes. Cambridge, Mass: National Bureau of Economic Research, 2003.
Знайти повний текст джерелаЧастини книг з теми "Collapse models"
Stamatescu, I. O. "Stochastic Collapse Models." In Decoherence and the Appearance of a Classical World in Quantum Theory, 357–81. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-662-05328-7_8.
Повний текст джерелаStamatescu, I. O. "Stochastic Collapse Models." In Decoherence and the Appearance of a Classical World in Quantum Theory, 249–67. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-662-03263-3_8.
Повний текст джерелаMartin, Jérôme, and Vincent Vennin. "Collapse Models and Cosmology." In Fundamental Theories of Physics, 269–90. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-46777-7_21.
Повний текст джерелаFerialdi, Luca. "Presentation of Collapse Models." In Fundamental Theories of Physics, 45–54. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-46777-7_4.
Повний текст джерелаBahrami, Mohammad, Angelo Bassi, Sandro Donadi, Luca Ferialdi, and Gabriel León. "Irreversibility and Collapse Models." In On Thinking, 125–46. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-10446-1_6.
Повний текст джерелаMcNamara, S. "Inelastic Collapse." In Dynamics: Models and Kinetic Methods for Non-equilibrium Many Body Systems, 267–77. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-011-4365-3_15.
Повний текст джерелаBojowald, Martin. "Midisuperspace Models: Black Hole Collapse." In Quantum Cosmology, 167–95. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-8276-6_9.
Повний текст джерелаPearle, Philip. "Wavefunction Collapse Models with Nonwhite Noise." In Perspectives on Quantum Reality, 93–109. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-015-8656-6_8.
Повний текст джерелаBedingham, Daniel J. "Collapse Models, Relativity, and Discrete Spacetime." In Fundamental Theories of Physics, 191–203. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-46777-7_15.
Повний текст джерелаCarlesso, Matteo, and Mauro Paternostro. "Opto-Mechanical Test of Collapse Models." In Fundamental Theories of Physics, 205–15. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-46777-7_16.
Повний текст джерелаТези доповідей конференцій з теми "Collapse models"
BRUENN, S. W. "ISSUES WITH CORE-COLLAPSE SUPERNOVA PROGENITOR MODELS." In Open Issues in Core Collapse Supernova Theory. WORLD SCIENTIFIC, 2005. http://dx.doi.org/10.1142/9789812703446_0005.
Повний текст джерелаCARDALL, C. Y., A. O. RAZOUMOV, E. ENDEVE, and A. MEZZACAPPA. "THE LONG TERM: SIX-DIMENSIONAL CORE-COLLAPSE SUPERNOVA MODELS." In Open Issues in Core Collapse Supernova Theory. WORLD SCIENTIFIC, 2005. http://dx.doi.org/10.1142/9789812703446_0010.
Повний текст джерелаJORDAN, G. C., B. S. MEYER, and ED D'AZEVEDO. "TOWARD IN SITU CALCULATION OF NUCLEOSYNTHESIS IN SUPERNOVA MODELS." In Open Issues in Core Collapse Supernova Theory. WORLD SCIENTIFIC, 2005. http://dx.doi.org/10.1142/9789812703446_0020.
Повний текст джерелаGeers, Thomas L. "Reduced models for violent bubble collapse." In ICA 2013 Montreal. ASA, 2013. http://dx.doi.org/10.1121/1.4800107.
Повний текст джерелаHosseinizadeh, Pouyan, Aziz Guergachi, and Vanessa Magness. "Predicting system collapse: Two theoretical models." In 2009 IEEE International Conference on Systems, Man and Cybernetics - SMC. IEEE, 2009. http://dx.doi.org/10.1109/icsmc.2009.5345979.
Повний текст джерелаTHOMAS, R. C. "TOWARD THREE-DIMENSIONAL MODELS OF CORE-COLLAPSE SUPERNOVA SPECTRA AND LIGHT CURVES: MOTIVATIONS AND CHALLENGES." In Open Issues in Core Collapse Supernova Theory. WORLD SCIENTIFIC, 2005. http://dx.doi.org/10.1142/9789812703446_0022.
Повний текст джерелаManmana, Salvatore R. "Collapse and Revival Starting from a Luttinger Liquid." In EFFECTIVE MODELS FOR LOW-DIMENSIONAL STRONGLY CORRELATED SYSTEMS. AIP, 2006. http://dx.doi.org/10.1063/1.2178043.
Повний текст джерелаDas, Suratna, Kinjalk Lochan, Satyabrata Sahu, Shreya Banerjee, and T. P. Singh. "Classicalization of inflationary perturbations by collapse models." In Proceedings of the MG14 Meeting on General Relativity. WORLD SCIENTIFIC, 2017. http://dx.doi.org/10.1142/9789813226609_0341.
Повний текст джерелаAntuña, Joaquín, Antonio Aznar, José Ignacio Hernando, and Fernando Magdalena. "LEARN ABOUT MASONRY ARCHES COLLAPSE WITH MODELS." In 11th International Conference on Education and New Learning Technologies. IATED, 2019. http://dx.doi.org/10.21125/edulearn.2019.1887.
Повний текст джерелаBabaei, M. H. "Collapse of Rectangular Granular Piles in Air and Water." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-65012.
Повний текст джерелаЗвіти організацій з теми "Collapse models"
Adler, R. Simple Analytic Models of Gravitational Collapse. Office of Scientific and Technical Information (OSTI), February 2005. http://dx.doi.org/10.2172/839752.
Повний текст джерелаWoodson, Stanley C., and James T. Baylot. Structural Collapse: Quarter-Scale Model Experiments. Fort Belvoir, VA: Defense Technical Information Center, August 1999. http://dx.doi.org/10.21236/ada369355.
Повний текст джерелаWolfe, S. A., H. B. O'Neill, C. Duchesne, D. Froese, J M Young, and S. V. Kokelj. Ground ice degradation and thermokarst terrain formation in Canada over the past 16 000 years. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329668.
Повний текст джерелаG. Li and C. Tsang. Seepage Model for PA Including Dift Collapse. Office of Scientific and Technical Information (OSTI), December 2000. http://dx.doi.org/10.2172/840689.
Повний текст джерелаC. Tsang. SEEPAGE MODEL FOR PA INCLUDING DRIFT COLLAPSE. Office of Scientific and Technical Information (OSTI), September 2004. http://dx.doi.org/10.2172/841253.
Повний текст джерелаBaader, Franz, and Cesare Tinelli. Combining Equational Theories Sharing Non-Collapse-Free Constructors. Aachen University of Technology, 1999. http://dx.doi.org/10.25368/2022.103.
Повний текст джерелаGunay, Selim, Fan Hu, Khalid Mosalam, Arpit Nema, Jose Restrepo, Adam Zsarnoczay, and Jack Baker. Blind Prediction of Shaking Table Tests of a New Bridge Bent Design. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, November 2020. http://dx.doi.org/10.55461/svks9397.
Повний текст джерелаTerzic, Vesna, and William Pasco. Novel Method for Probabilistic Evaluation of the Post-Earthquake Functionality of a Bridge. Mineta Transportation Institute, April 2021. http://dx.doi.org/10.31979/mti.2021.1916.
Повний текст джерелаPeters, C. Mechanical test results on Dipole model C-1 25 mm aluminum collars. Office of Scientific and Technical Information (OSTI), February 1985. http://dx.doi.org/10.2172/5224978.
Повний текст джерелаMcHardy, James. Development of a Cavity Collapse Model of Cavitation Bubbles in Water in One and Two Dimensions using the Finite Volume FLAG Hydrocode at Atmospheric Pressure and 293K. Office of Scientific and Technical Information (OSTI), June 2014. http://dx.doi.org/10.2172/1136106.
Повний текст джерела