BEGIN:VCALENDAR
PRODID:-//PSU Mathematics Department//Seminar iCalendar Generator//EN
VERSION:2.0
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:CCMA Luncheon Seminar
X-WR-TIMEZONE:America/New_York
BEGIN:VTIMEZONE
TZID:America/New_York
X-LIC-LOCATION:America/New_York
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:19700308T020000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:19701101T020000
RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150112T122000
DTEND;TZID=America/New_York:20150112T133000
LOCATION:MB114
URL:http://www.math.psu.edu/seminars/meeting.php?id=25537
SUMMARY:CCMA Luncheon Seminar - Computational Methods for Flows in Porous M
edia
DESCRIPTION:Seminar: CCMA Luncheon Seminar\nTitle: Computational Methods fo
r Flows in Porous Media\nSpeaker: Workshop (8:30am-2:30pm)\nAbstract Link:
http://sites.psu.edu/porous2015/\nAbstract: The workshop aims to promote
scientific interactions on on computational methods for flows in porous me
dia between graduate students from Penn State\, the University of Bergen\,
Technische Universiteit Eindhoven\, and the University of Stuttgart visit
ing the Department of Mathematics at Penn State. All presentations are giv
en by graduate students from these institutions.
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150119T122000
DTEND;TZID=America/New_York:20150119T133000
LOCATION:MB114
URL:http://www.math.psu.edu/seminars/meeting.php?id=26479
SUMMARY:CCMA Luncheon Seminar - TBA
DESCRIPTION:Seminar: CCMA Luncheon Seminar\nTitle: TBA\nSpeaker: Martin Lut
her King Day - No Classes
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150126T122000
DTEND;TZID=America/New_York:20150126T133000
LOCATION:MB114
URL:http://www.math.psu.edu/seminars/meeting.php?id=26480
SUMMARY:CCMA Luncheon Seminar - Modeling Blood Cell-Substrate Interaction a
nd Biofilm-Fluid Interaction
DESCRIPTION:Seminar: CCMA Luncheon Seminar\nTitle: Modeling Blood Cell-Subs
trate Interaction and Biofilm-Fluid Interaction\nSpeaker: Zhiliang Xu\, Un
iversity of Notre Dame (Host: C Liu)\nAbstract: This is an introductory ta
lk for the CAM Colloquium.
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150202T122000
DTEND;TZID=America/New_York:20150202T133000
LOCATION:MB114
URL:http://www.math.psu.edu/seminars/meeting.php?id=26481
SUMMARY:CCMA Luncheon Seminar - Mathematics of Ions in Channels and Solutio
ns
DESCRIPTION:Seminar: CCMA Luncheon Seminar\nTitle: Mathematics of Ions in C
hannels and Solutions\nSpeaker: Bob Eisenberg\, Rush University Medical Ce
nter (Host: J Xu)\nAbstract: Proteins called ionic channels are the ultima
te multiscale device\, the ‘nanovalves of life’ controlling most biolo
gical functions. A handful of atoms control biological function on the mac
roscale\, so analysis must link atomic scales of distance 10-10 m and time
10-15 sec with biological scales >10-3 m and >10-4 sec. Ion channels have
a role in biology like the channels of field effect transistors in comput
ers: both are valves for electricity controlling nearly everything. Ion ch
annels are proteins with a hole down their middle that catalyze the moveme
nt of sodium\, potassium\, calcium and chloride ions across the otherwise
impermeable membranes that define cells. Once a channel opens\, it has a s
ingle structure on the biological time scale slower than say seconds. The
ions present around every cell and molecule in biology are hard spheres a
nd so the calculation of how hard spheres go through a channel of one stru
cture is a central problem in a wide range of biology. Literally thousands
of biologists study the properties of channels in experiments every day.
\n My collaborators and I have shown how the relevant equations can be der
ived (almost) from stochastic differential equations\, and how they can be
solved in direct\, variational\, and inverse problems using models that d
escribe a wide range of biological situations with only a handful of param
eters that do not change even when concentrations change by a factor of 10
7. Variational methods hold particular promise as a way to solve problems
outstanding for more than a century because they describe interactions of
'everything with everything else’ that characterize ions crowded into ch
annels.
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150209T122000
DTEND;TZID=America/New_York:20150209T133000
LOCATION:MB114
URL:http://www.math.psu.edu/seminars/meeting.php?id=26482
SUMMARY:CCMA Luncheon Seminar - Imaging of Sparse Scatterers
DESCRIPTION:Seminar: CCMA Luncheon Seminar\nTitle: Imaging of Sparse Scatte
rers\nSpeaker: Alexei Novikov\, Penn State University
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150216T122000
DTEND;TZID=America/New_York:20150216T133000
LOCATION:MB114
URL:http://www.math.psu.edu/seminars/meeting.php?id=26483
SUMMARY:CCMA Luncheon Seminar - High Order eXtended Finite Element Methods
for Interface problems
DESCRIPTION:Seminar: CCMA Luncheon Seminar\nTitle: High Order eXtended Fini
te Element Methods for Interface problems\nSpeaker: Fei Wang\, Penn State
University\nAbstract: Many problems in physics\, engineering\, and other f
ields involve a certain level of coupling between different physical syste
ms. For many multi-physics problems\, the most difficult part is dealing w
ith an interface\, which separates two phases of matter\; each may be soli
d\, liquid\, or gaseous. The extended finite element method (XFEM)\, which
extends the classical FEM by enriching the numerical solution space local
ly around the interface with discontinuous functions\, has shown its poten
tial in a variety of applications that involve non-smooth solutions near i
nterface. In this talk\, we will discuss high order XFEM with DG schemes t
o solve an elliptic interface problem. We show the optimal convergence rat
e for any order XFE space if the solution satisfies curtain regularity in
each subdomain. The talk is based on the joint research works with Jincha
o Xu\, Yuanming Xiao\, and Shuo Zhang.
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150223T122000
DTEND;TZID=America/New_York:20150223T133000
LOCATION:MB114
URL:http://www.math.psu.edu/seminars/meeting.php?id=26494
SUMMARY:CCMA Luncheon Seminar - Thermo-Mechanical Modeling of Additive Manu
facturing Processes
DESCRIPTION:Seminar: CCMA Luncheon Seminar\nTitle: Thermo-Mechanical Modeli
ng of Additive Manufacturing Processes\nSpeaker: Pan Michaleris\, Penn Sta
te University
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150302T122000
DTEND;TZID=America/New_York:20150302T133000
LOCATION:MB114
URL:http://www.math.psu.edu/seminars/meeting.php?id=26484
SUMMARY:CCMA Luncheon Seminar - Auction theory from an applied Math point o
f view
DESCRIPTION:Seminar: CCMA Luncheon Seminar\nTitle: Auction theory from an a
pplied Math point of view\nSpeaker: Nir Gavish\, Technion – Israel Insti
tute of Technology (Host: C Liu)\nAbstract: Auctions are typically related
to electronic trading sites like Ebay or when auctions of art masterpiece
s hit the news. It is less commonly recognized that auctions are central t
o the backbone of economy with wide use in electricity markets\, treasury
auctions\, foreign exchanges\, mineral rights and more. For example\, in 2
014 the US Treasury used auctions to issue approximately $7 trillion in se
curities to finance the public dept of the US.\nMost of auction theory con
cerns the case where all bidders are symmetric (identical). This is not be
cause bidders are believed to be symmetric\, but rather because the analys
is of asymmetric auctions is considerably harder. For example\, in the cas
e of the common first-price auction\, the symmetric case is governed by a
single ODE which is easy to solve explicitly. In contrast\, the model for
asymmetric first-price auction consists of n first-order nonlinearly coupl
ed ODES with 2n boundary condition and an unknown location of the right bo
undary\, where n is the number of bidders. This nonstandard boundary value
problem is challenging to analyze\, or even to solve numerically. Therefo
re\, very little is known about its solutions.\nIn this talk\, I will revi
ew various approaches to this problem (perturbation analysis\, dynamical s
ystems\, numerical methods)\, and in particular focus on the case of large
asymmetric first-price auctions.\nJoint work with Gadi Fibich and Arieh G
avious
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150309T122000
DTEND;TZID=America/New_York:20150309T133000
LOCATION:MB114
URL:http://www.math.psu.edu/seminars/meeting.php?id=26485
SUMMARY:CCMA Luncheon Seminar - TBA
DESCRIPTION:Seminar: CCMA Luncheon Seminar\nTitle: TBA\nSpeaker: Spring Bre
ak\, No Classes
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150316T122000
DTEND;TZID=America/New_York:20150316T133000
LOCATION:MB114
URL:http://www.math.psu.edu/seminars/meeting.php?id=26486
SUMMARY:CCMA Luncheon Seminar - Fitness\, Games\, and Public Goods
DESCRIPTION:Seminar: CCMA Luncheon Seminar\nTitle: Fitness\, Games\, and Pu
blic Goods\nSpeaker: Andrew Belmonte\, Penn State University
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150323T122000
DTEND;TZID=America/New_York:20150323T133000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=26495
SUMMARY:CCMA Luncheon Seminar - TBA
DESCRIPTION:Seminar: CCMA Luncheon Seminar\nTitle: TBA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150330T122000
DTEND;TZID=America/New_York:20150330T133000
LOCATION:MB114
URL:http://www.math.psu.edu/seminars/meeting.php?id=26487
SUMMARY:CCMA Luncheon Seminar - Energy-Stable Open Boundary Conditions for
Two-Phase Outflows
DESCRIPTION:Seminar: CCMA Luncheon Seminar\nTitle: Energy-Stable Open Bound
ary Conditions for Two-Phase Outflows\nSpeaker: Suchuan Steven Dong\, Purd
ue University (Host: J Xu)\nAbstract: This talk focuses on the motion of a
mixture of two immiscible incompressible fluids in a domain with open bou
ndaries. The domain boundary is open in the sense that the fluids can free
ly leave or even enter the domain through such boundaries. In particular\,
we concentrate on situations where the interface formed between the two f
luids passes through the open portions of the domain boundary. The problem
therefore involves truly two-phase outflow/open boundaries.\n\nThe challe
nge facing the design of effective techniques for treating two-phase outfl
ows in numerical simulations is manifold. Some of the primary issues are a
ssociated with the viscosity contrasts\, density contrasts\, surface tensi
on\, and the presence of fluid interface\, backflows or strong vortices on
the open boundaries. Large density ratios and large viscosity ratios of t
he two fluids make two-phase outflow simulations tremendously challenging.
\n\nIn this talk we present a set of boundary conditions\, and an associat
ed numerical algorithm\, for two-phase outflow simulations within the phas
e field framework. These open boundary conditions have the characteristic
that they all ensure the energy stability of the two-phase system\, even
in situations where strong vortices\, backflows\, large density contrast a
nd\nlarge viscosity contrast are present at the open boundaries. We will s
how the physical accuracy of the method by comparing simulation results wi
th the theory and experimental data. Numerical experiments will be present
ed to demonstrate the long-term stability of the method in situations wher
e large density contrast\, large viscosity contrast\, and backflows are pr
esent at the outflow/open boundaries.
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150406T122000
DTEND;TZID=America/New_York:20150406T133000
LOCATION:MB114
URL:http://www.math.psu.edu/seminars/meeting.php?id=26488
SUMMARY:CCMA Luncheon Seminar - A few optimal path planning problems (for a
simple car with a constrained turning radius)
DESCRIPTION:Seminar: CCMA Luncheon Seminar\nTitle: A few optimal path plann
ing problems (for a simple car with a constrained turning radius)\nSpeaker
: Richard Tsai\, University of Texas\, Austin (Host: X Li)\nAbstract: In t
his short talk\, I will discuss a few non-standard path planning problems
and algorithms for learning of unknown domains. We will also discuss a co
mparatively standard problem related to optimal trajectories of a simple c
ar with a minimal turning radius.
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150413T122000
DTEND;TZID=America/New_York:20150413T133000
LOCATION:MB114
URL:http://www.math.psu.edu/seminars/meeting.php?id=26489
SUMMARY:CCMA Luncheon Seminar - Limit dynamics of a small solid in a perfec
t incompressible fluid.
DESCRIPTION:Seminar: CCMA Luncheon Seminar\nTitle: Limit dynamics of a smal
l solid in a perfect incompressible fluid.\nSpeaker: Olivier Glass\, Unive
rsité Paris-Dauphine (Host: A. Bressan)\nAbstract: This is an introducto
ry talk to the Computational and Applied Mathematics Colloquium.
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150420T122000
DTEND;TZID=America/New_York:20150420T133000
LOCATION:MB114
URL:http://www.math.psu.edu/seminars/meeting.php?id=26490
SUMMARY:CCMA Luncheon Seminar - Computational Challenges in Reservoir Simul
ations
DESCRIPTION:Seminar: CCMA Luncheon Seminar\nTitle: Computational Challenges
in Reservoir Simulations\nSpeaker: Ilya Mishev\, ExxonMobil Upstream Rese
arch Company (Host: L Zikatanov)\nAbstract: Reservoir simulations are exte
nsively used in the petroleum industry to predict the optimal way to produ
ce oil and gas from the reservoirs. Understanding how oil\, gas\, and wate
r flow in the subsurface is essential for the success of the simulations.
Modeling of fluid flow in porous media requires solving a strongly couple
system of nonlinear PDEs in highly heterogeneous and anisotropic media. Th
e PDEs exhibit both hyperbolic and parabolic features. Following accuratel
y the geologic layers leads to grids that challenge the approximation meth
ods. We will sketch the approaches used in the petroleum industry and some
of the academic research for the discretization of the equations and solv
ing the linear systems and discuss the challenges.
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150427T122000
DTEND;TZID=America/New_York:20150427T133000
LOCATION:MB114
URL:http://www.math.psu.edu/seminars/meeting.php?id=26491
SUMMARY:CCMA Luncheon Seminar - Inverse Obstacle Scattering
DESCRIPTION:Seminar: CCMA Luncheon Seminar\nTitle: Inverse Obstacle Scatter
ing\nSpeaker: Rainer Kress\, University of Goettingen (Host: L Zikatanov)
\nAbstract: This talk serves as an introduction to the afternoon's CAM Col
loquium.
END:VEVENT
END:VCALENDAR