An approximation of the solution to a hyperbolic equation with a damping term is introduced. It is built as the composition of Fourier integral operators (FIO). We prove the convergence of this approximation in the sense of Sobolev norms as well as for the wavefront set of the solution. We apply the introduced method tonumerically image seismic ...
Creator:
Le Rousseau, Jerome (Aix-Marseille Université, Université de Provence))
Created:
2005-10-20
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Under shear, complex fluids often undergo instabilities leading to new flow patterns. Shear-banding is such a flow-induced instability, observed in many systems of various microstructures from surfactants and polymer solutions, to liquid crystal polymers, emulsions, granular materials and foams. It results from the coupling between the flow and ...
Creator:
Lerouge, Sandra (Université de Paris VII (Denis Diderot))
Created:
2009-09-18
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Uncertainty predictions and data assimilation for ocean and fluid flows are discussed within the context of Dynamically Orthogonal (DO) field equations and their adaptive error subspaces. These stochastic partial differential equations provide prior probabilities for novel nonlinear data assimilation methods which are derived and illustrated. Th...
Creator:
Lermusiaux, Pierre FJ (Harvard University)
Created:
2011-06-07
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Lerman Family history; Lerman's work in the US Post Office and the railroads; getting into law school at the University of Minnesota and his many years of legal practice as a labor lawyer. Lerman was also involved with the St. Paul Workman's Circle, and discusses labor-related activities in the St. Paul Jewish community, including Labor-Zionism....
Creator:
Lerman, Louis, 1894-1978
Contributor:
Tselos, Gretchen (Interviewer)
Created:
1977-07-01
Contributed By:
University of Minnesota Libraries, Nathan and Theresa Berman Upper Midwest Jewish Archives.
The seminar will start with a brief introduction of the IMA data science lab and highlights of the incoming talks. We will also ask for input of participants and industrial partners (via Twitter) of topics they would like to be covered. The hashtag is #imadatascience. This will be followed at 1:55pm with a presentation by Jeffrey Moulton, a lab ...
Creator:
Lerman, Gilad (University of Minnesota, Twin Cities); Moulton, Jeffrey (University of Minnesota, Twin Cities)
Created:
2015-09-08
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
We propose a fast multi-way spectral clustering algorithm for multi-manifold data modeling. We describe the supporting theory as well as the practical choices guided by it. We emphasize the case of hybrid linear modeling, i.e., when the manifolds are affine subspaces in a Euclidean space, and then extend this setting to more general manifolds an...
Creator:
Lerman, Gilad (University of Minnesota, Twin Cities)
Created:
2008-10-29
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Motivated by talks from the first day of this workshop, we discuss in more detail modelling data by multiple subspaces, a.k.a., subspace clustering. We emphasize various theoretical results supporting the performance of some of these algorithms. In particular, we study in depth the minimizer obtained by a common energy minimization and its robus...
Creator:
Lerman, Gilad (University of Minnesota, Twin Cities)
Created:
2011-10-27
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
The function of structured RNA molecules depends on forming the correct 3D structure, so the most significant constraints on their sequences are structural. Structure-disrupting substitutions are selected against during evolution while structurally neutral substitutions can accumulate as populations evolve. The relevant interactions include base...
Creator:
Leontis, Neocles B. (Bowling Green State University)
Created:
2007-10-31
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
From bird flocks to fish schools, animals move together and respond to their environment in remarkable ways; their natural collective motion patterns appear well choreographed and their collective survival strategies seem ingenious. These animal group behaviors inspire design for groups of mobile, sensor-equipped robots, where demanding cooperat...
Creator:
Leonard, Naomi Ehrich (Princeton University)
Created:
2011-10-11
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Kathryn Leonard received her Ph.D. degree in mathematics from Brown University and joined the California State University, Channel Islands (CI), faculty after postdoctoral work at the California Institute of Technology and a visiting position at Pomona College. Her awards include an NSF CAREER Award and an MAA Henry L. Alder Award for Distinguis...
Creator:
Leonard, Kathryn (California State University, Channel Island)
Created:
2013-03-04
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
