Queueing systems exhibit a fundamental tradeoff between the availability of resources and performance, such as delays and queue lengths. Typically such resources include the number and the speed of servers, but other resources, for example, the availability of a common buffer and the amount of information exchange, can also have a first order im...
Creator:
Gamarnik, David (Massachusetts Institute of Technology)
Created:
2015-10-22
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
A classical result of Caffarelli, Kohn, and Nirenberg statesthat the one dimensional Hausdorff measure of singularitiesof a suitable weak solution of the Navier-Stokes system iszero. We present a short proof of the partial regularityresult which allows the force to belong to a singular Morreyspace. We also provide a new upper bound for the fract...
Creator:
Kukavica, Igor (University of Southern California)
Created:
2010-02-25
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
In this talk results of pressure gradient vs. volume flow rate calculations over a wide range of oscillatory frequencies for oscillatory tube flow of healthy human blood are performed using the non-homogeneous hemorheological model of Moyers-Gonzalez et al. [M.A. Moyers-Gonzalez, R.G. Owens, J. Fang, A non-homogeneous constitutive model for huma...
Creator:
Owens, Robert Gwyn (University of Montreal)
Created:
2009-09-17
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
The Penumbra Theatre Company Records' Production Records Collection contains materials related to Penumbra's productions records from various plays, set designs, costume designs, oversized production scripts, and programs.
Creator:
Penumbra Theatre Company
Created:
2003 - 2004
Contributed By:
University of Minnesota Libraries, Archie Givens, Sr. Collection of African American Literature.
I will describe some results giving a single exponential upper bound onthe number of possible homotopy types of the fibres of a Pfaffian map, in termsof the format of its graph.In particular,we show that if a semi-algebraic set S Š‚ „ m+nis defined by a Boolean formula with s polynomials of degrees less than d, andÏ€: (R)m+n †’(R)n is the projec...
Creator:
Basu, Saugata (Georgia Institute of Technology)
Created:
2007-04-16
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
A number of applications of interest at Sandia National Laboratories involve hyperbolic PDEs, and ultimately require uncertainty quantification methods. I will describe in general the nature of these applications and focus in particular on algorithms for shock hydrodynamics and transient dynamics problems based on tetrahedral finite elements. I ...
Creator:
Scovazzi, Guglielmo (Sandia National Laboratories)
Created:
2010-10-21
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
There are so many Riemannian metrics on the space of curves, it is worthwhile to compare them. I will take one fixed shape and contrast the shape of the unit ball in 5 of these metrics. After that, I want to discuss in more detail one particular Riemannian metric which was first proposed by Younes and has recently been investigated by Mio-Srivas...
Creator:
Mumford, David (Brown University)
Created:
2006-04-04
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
We consider k-regular graphs with loops, and study the Lovasztheta-numbers and Schrijver theta'-numbers of thegraphs that result when the loop edges are removed. We show that thetheta-number dominates a recent eigenvalue upper bound on thestability number due to Godsil and Newman [C.D. Godsil and M.W.Newman. Eigenvalue bounds for independent set...
Creator:
De Klerk, Etienne (Katholieke Universiteit Brabant (Tilburg University))
Created:
2007-01-16
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
The vortex sheet is a mathematical model for a shear layerin which the layer is approximated by a surface. Vortexsheet evolution has been shown to approximate the motionof shear layers well, both in the case of free layers andof separated flows at sharp edges.Generally, the evolving sheets develop singularitiesin finite time. To approximate the ...
Creator:
Nitsche, Monika (University of New Mexico)
Created:
2010-02-22
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
A n-sided polygon in 3-space can be described as a point in 3n-space by listing in order the coordinates of it vertices. In this way, the space of embedded n-sided polygons is a manifold in which points correspond to piecewise linear knots and paths correspond to isotopies which preserve the geometric structure of these knots. In this talk, we w...
Creator:
Hake, Kate (Carleton College)
Created:
2019-06-26
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
We show that the value function in a stochastic differential game does not change if we keep the same space $(\Omega,\cF)$ but introduce probability measures by means of Girsanov's transformation {\em depending\/} on the policies of the players. We also show that the value function does not change if we allow the driving Wiener processes to depe...
Creator:
Krylov, Nicolai (University of Minnesota, Twin Cities)
Created:
2018-05-10
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
The set of tools for thinking hard about sampling and measurement-level aspects of scientific studies is among the earliest areas of statistics tobe worked out. However, it arguably is not among the sexier topic areas. In network analysis, perhaps partly as a result of this fact, it is not infrequent that we find ourselves inclined to quickly mo...
Creator:
Kolaczyk, Eric (Boston University)
Created:
2012-02-28
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.