Search
Results
-
Multi-level quasi-Monte Carlo finite element methods for a class of elliptic partial differential equations with random coefficients
(2012)SAM Research ReportThis paper is a sequel to our previous work $({Kuo, Schwab, Sloan, SIAM J.\ Numer.\ Anal., 2013})$ where quasi-Monte Carlo (QMC) methods (specifically, randomly shifted lattice rules) are applied to Finite Element (FE) discretizations of elliptic partial differential equations (PDEs) with a random coefficient represented in a countably infinite number of terms. We estimate the expected value of some linear functional of the solution, as ...Report -
High-dimensional adaptive sparse polynomial interpolation and applications to parametric PDEs
(2012)SAM Research ReportWe consider the problem of Lagrange polynomial interpolation in high or countably infinite dimension, motivated by the fast computation of solution to parametric/stochastic PDE’s. In such applications there is a substantial advantage in considering polynomial spaces that are sparse and anisotropic with respect to the different parametric variables. In an adaptive context, the polynomial space is enriched at different stages of the ...Report -
Intrinsic Fault Tolerance of Multi Level Monte Carlo Methods
(2012)SAM Research ReportMonte Carlo (MC) and Multilevel Monte Carlo (MLMC) methods applied to solvers for Partial Differential Equations with random input data are shown to exhibit intrinsic failure resilience. Sufficient conditions are provided for non-recoverable loss of a random fraction of samples not to fatally damage the asymptotic accuracy vs. work of an MC simulation. Specifically, the convergence behavior of MLMC methods on massively parallel hardware ...Report -
Sparse MCMC gpc Finite Element Methods for Bayesian Inverse Problems
(2012)SAM Research ReportSeveral classes of MCMC methods for the numerical solution of Bayesian Inverse Problems for partial differential equations (PDEs) with unknown random field coefficients are considered. A general framework for their numerical analysis is presented. The complexity of MCMC sampling for the unknown fields from the posterior density, as well as the convergence of the discretization error of the PDE of interest in the forward response map, is ...Report -
The Value of the Revolving Door
(2012)KOF Working PapersWe analyze stock market reactions to announcements of political appointments from the private sector and corporate appointments of former government officials. Using unique data on corporate affiliations and announcements of all Senate-confirmed U.S. Defense Department appointees of six administrations, we find positive abnormal returns for political appointments. These estimates are not driven by important observations, volatile stocks ...Working Paper -
Zerstörungsfreie Versuche zur Ermittlung des Elastizitätsmodules von Holzbrettern
(2012)IBK BerichtReport -
A unified measure of moral neutralization
(2012)Forschungsbericht aus der Reihe z-proso, Zürcher Projekt zur Sozialen Entwicklung von KindernReport -
Channeling the final say in politics
(2012)Economics Working Paper SeriesWe examine how the final say in a sequence of proposals for local public project provision, financing, and redistribution can be channeled towards socially desirable outcomes, thereby breaking the dictatorial power of the last agenda-setter. Individuals are heterogeneous with some citizens benefiting from the public project (winners) and the rest losing (losers) relative to per-capita costs. Our main insight is that a simple ban on subsidies ...Working Paper -
Beyond Work Ethic
(2012)KOF Working PapersWe investigate the effect of Reformed Protestantism, relative to Catholicism, on preferences for leisure, and for redistribution and intervention in the economy. We use a Fuzzy Spatial Regression Dis- continuity Design to exploit a historical quasi-experiment inWestern Switzerland, where in the 16th century a hitherto homogeneous re- gion was split and one part assigned to adopt Protestantism. We nd that Reformed Protestantism reduces ...Working Paper -
Regional interest rate pass-through in Italy
(2012)KOF Working PapersThis paper estimates the pass-through and speed of adjustment of Italian regional interest rates to changes in the money market rate for the period 1998Q1-2009Q4. Our main findings suggest that the markup for the lending rates that banks charge are generally higher in the South than in the North. Moreover, our results indicate that the pass-through tends to be longer in Southern regions. We find little evidence supporting the hypothesis ...Working Paper