This folder contains materials created/collected by Jesse Nelson Alexander, Jr., born August 19, 1928 in Somerset, Kentucky. Alexander's involvement with the YMCA dates from 1946, when he was recruited as a youth leader for the Chestnut Street YMCA in Louisville, Kentucky. His YMCA career took him from Louisville to Chicago; Brooklyn, New York;...
Creator:
Alexander, Jesse N.
Created:
1977
Contributed By:
University of Minnesota Libraries, Kautz Family YMCA Archives.
Interfacial effects are important in many cases for microscale transport. One of the few experimental techniques that can resolve interfacial transport with sub-micron spatial resolution is evanescent wave-based, or nano-, particle-image velocimetry (PIV), which determines fluid velocities over the first 500 nm next to the wall from the displace...
Creator:
Yoda, Minami (Georgia Institute of Technology)
Created:
2009-12-08
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
A general class of non-smooth and non-convex optimizationproblems is discussed. Such problems arise in imaging analysis, controland inverse problems and calculus of variation and much more.Our analysis focuses on the infinite dimensional case (PDE-constaintproblem and mass transport problem and so on). The Lagrange multiplier theory is developed...
Creator:
Ito, Kazufumi (North Carolina State University)
Created:
2015-12-10
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
We show that new families of accelerating and almost nondiracting beams (solutions) for Maxwell's equations can be constructed. These are complex geometrical optics (CGO) solutions to Maxwell's equations with nonlinear limiting Carleman weights. They have the form of wave packets that propagate along circular trajectories while almost pre-servin...
Creator:
Zhou, Ting (Northeastern University)
Created:
2017-04-20
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Consider a multi-variate time series, which may correspond to spike train responses for multiple neurons in a brain, crime event data across multiple regions, and many others. An important challenge associated with these time series models is to estimate an influence network between the d variables, especially when the number of variables d is l...
Creator:
Raskutti, Garvesh (University of Wisconsin, Madison)
Created:
2018-04-26
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Functional connectivity in neuroscience is considered as one of the main features of the neural code. It is nowadays possible to obtain the spike activities of tens to hundreds of neurons simultaneously and the issue is then to infer the functional connectivity thanks to those complex data. To deal with this problem, we consider estimation of sp...
Creator:
Rivoirard, Vincent (Universite Paris-Dauphine)
Created:
2018-04-25
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
A common task in many data-driven applications is to find a low dimensional manifold that describes the data accurately. Estimating a manifold from noisy samples has proven to be a challenging task. Indeed, even after decades of research, there is no (computationally tractable) algorithm that accurately estimates a manifold from noisy samples wi...
Creator:
Aizenbud, Yariv (Yale University)
Created:
2021-11-09
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Non-parametric Bayesian techniques are considered for learning dictionaries forsparse image representations, with applications in denoising, inpainting andcompressive sensing (CS). The beta process is employed as a prior for learningthe dictionary, and this non-parametric method naturally infers an appropriatedictionary size. The Dirichlet proce...
Creator:
Carin, Lawrence (Duke University)
Created:
2009-10-06
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
This talk will provide an overview of our recent work onamplification of disturbances in channel flows ofviscoelastic fluids. Even if a standard linear stability(i.e., modal) analysis predicts that a particular flow isstable, the question of the sensitivity of the flow tovarious disturbances remains. If disturbances to thelinearized governing eq...
Creator:
Kumar, Satish (University of Minnesota, Twin Cities)
Created:
2009-10-12
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
The problems of transportation in Non-metro areas is the topic of this program. An introduction of a Bill to the Legislature which will allow a creation of a State Department of Transportation and how this Department should be formed is discussed by an author of the Bill, Senator George Conzemius and supporter of this Bill, Representative Arne C...
Creator:
University of Minnesota. Radio Station KUOM; University of Minnesota. Audio Visual Library Services
Contributor:
Conzemius, George; Carlson, Arne
Created:
1973
Contributed By:
University of Minnesota Libraries, University Archives.
Realistic quantum mechanical systems are influenced throughthe coupling to an environment containing a large number ofmostly uncontrollable degrees of freedom. This unavoidableinteraction of an open quantum systems with its environmentleads to the mechanisms of dissipation and damping, and toa strong and often rapid loss of quantum coherence. Th...
We review work with Guy Gilboa on the use of nonlocal operators todefine new types of functionals for image processing and elsewhere. Thisgives an advantage in handling textures and repetitive structures.then we will discuss new joint work with Hayden Schaeffer, Russle Caflischand Cory Hauck on sparse solvers for multiscale PDE. we seem to autom...
Creator:
Osher, Stanley J. (University of California, Los Angeles)
Created:
2012-12-03
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
I will describe results concerning the behavior of solutions of evolution equations with nonlocal dissipation and/or nonlocal forcing, including the Surface Quasi-Geostrophic equation and models of electroconvection.
Creator:
Constantin, Peter (Princeton University)
Created:
2016-06-24
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
We consider nonlocal versions of Burgers equations in a preliminary attempt to1) generalize Hopf-Cole transforms for incompressible flows, and 2) to assessthe effect of nonlocality on the breakdown of maximum principle leadingto blow-up.It is well-known that by the Forsyth-Florin-Hopf-Cole transform 1D Burgersequation is integrable through a Ham...
Creator:
Okitani, Koji (University of Sheffield)
Created:
2010-02-23
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Theoretically equilibrium possibilities may be expanded by reducing the number of critical states. Furthermore, nonlinear valuation procedures may be used to assist the attainment of an expanded equilibrium with fewer securities than even the number of critical states. Practically, risk is an exposure to change in value or the variation in value...
Creator:
Madan, Dilip (University of Maryland)
Created:
2018-06-14
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Hyperspectral images provide the capability of identifying materials at a sub-pixel level by unmixing the spectra measured at each pixel. Many unmixing algorithms use a model of the mixing process. Unmixing is then approached as an inverse problem: find the spectra that were mixed according to the model to produce a given measurement, or set of ...
Creator:
Gader, Paul (University of Florida)
Created:
2013-09-26
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
