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991.
Scenario tree generation for multiperiod financial optimization by optimal discretization 总被引:1,自引:0,他引:1
G.Ch. Pflug 《Mathematical Programming》2001,89(2):251-271
Multiperiod financial optimization is usually based on a stochastic model for the possible market situations. There is a rich
literature about modeling and estimation of continuous-state financial processes, but little attention has been paid how to
approximate such a process by a discrete-state scenario process and how to measure the pertaining approximation error.?In
this paper we show how a scenario tree may be constructed in an optimal manner on the basis of a simulation model of the underlying
financial process by using a stochastic approximation technique. Consistency relations for the tree may also be taken into
account.
Received: December 15, 1998 / Accepted: October 1, 2000?Published online December 15, 2000 相似文献
992.
993.
E. J. Prime J. Lassen T. Achtzehn D. Albers P. Bricault T. Cocolios M. Dombsky F. Labrecque J. P. Lavoie M. R. Pearson T. Stubbe N. Lecesne Ch. Geppert K. D. A. Wendt 《Hyperfine Interactions》2006,171(1-3):127-134
The range of isotopes available at the TRIUMF Isotope Separator Accelerator (ISAC) facility has been greatly enhanced by adding
a Resonance Ionization Laser Ion Source (RILIS). A large wavelength range is accessible with the fundamental, second and third
harmonic generation of titanium-sapphire laser light. In addition a dedicated laser is available for non-resonant laser ionization.
The first on-line beam 62Ga was delivered in Dec. 2004. In general RILIS improves the intensity, purity and emittance of ion beams. 62Ga and 26Al and Be beams have been delivered so far on-line.
This work was financed by TRIUMF which is federally funded via a contribution agreement through the National Research Council
of Canada. 相似文献
994.
Chávez-Casillas Jonathan A. Elliott Robert J. Rémillard Bruno Swishchuk Anatoliy V. 《Methodology and Computing in Applied Probability》2019,21(3):699-719
We propose a simple stochastic model for the dynamics of a limit order book, extending the recent work of Cont and de Larrard (SIAM J Financial Math 4(1), 1–25 2013), where the price dynamics are endogenous, resulting from market transactions. We also show that the conditional diffusion limit of the price process is the so-called Brownian meander.
相似文献995.
996.
Chávez-Díaz Mercedes P. Luna-Sánchez Rosa M. Vazquez-Arenas Jorge Lartundo-Rojas Luis Hallen José M. Cabrera-Sierra Román 《Journal of Solid State Electrochemistry》2019,23(11):3187-3196
Journal of Solid State Electrochemistry - The passivation mechanism of the film formed on the alloy Ti-6Al-4V was evaluated in Hank’s solution to infer the properties of this alloy as an... 相似文献
997.
998.
On-surface chemistry is a promising way to achieve the bottom-up construction of covalently-bonded molecular precursors into extended atomically-precise polymers adsorbed on surfaces. These polymers exhibit unprecedented physical or chemical properties which are of great interest for various potential applications. These nanostructures were mainly obtained in ultra-high vacuum (UHV) on noble metal single-crystal surfaces by thermal annealing as stimulus to provoke the polymerization with a catalytic role of the surface adatoms. Nevertheless, photons are also a powerful source of energy to induce the formation of covalent architectures, even if it is less-used on surfaces than in solution. In this minireview, we discuss the photo-induced on-surface polymerization from the basic mechanisms of photochemistry to the formation of extended polymers on different kinds of surfaces, which are characterized by scanning probe microscopies. 相似文献
999.
Zs. Kajcsos Ch. Sauer W. Zinn W. Meisel H. Spiering M. Alflen P. Gütlich 《Hyperfine Interactions》1992,71(1-4):1469-1477
Increasing attention is being paid to non-conventional Mössbauer methods in view of the extension of Mössbauer Spectroscopy (MS) to a broadening field of applications. With such long-lasting experiments the shortening of the measuring time required for a given statistical significance is of major practical importance. It is shown that the statistical utility rateu allows one to determine which experimental parameters have a primary role, and it also enables sucessive optimization. It is pointed out for various MS measurements that the strategy for improving the experimental performance is strongly dependent on the given problem. As examples, time-differential Mössbauer measurements and conversion electron Mössbauer spectroscopy are discussed. 相似文献
1000.
M. Pautrat J.M. Lagrange J.S. Dionisio Ch. Vieu J. Vanhorenbeeck 《Nuclear Physics A》1985,443(1):172-188
The 198Pb and 197Pb isotopes are produced through the 186W(16O, 4n, 5n) reactions. Conversion-electron, γ- and X-ray spectra are measured using the compound-nucleus recoil method. Conversion coefficients and multipolarities are deduced for a large number of transitions. Together with angular distribution measurements and the results of γγt multidimensional coincidences they lead to decay schemes for the two isotopes. Microscopic calculations, performed in the two- or three-quasiparticle approximation with a surface delta interaction, fail to reproduce completely the observed properties, showing similar defects for the odd and even isotope. 相似文献