BEGIN:VCALENDAR
PRODID:-//PSU Mathematics Department//Seminar iCalendar Generator//EN
VERSION:2.0
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:Computational and Applied Mathematics Colloquium
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:20150105T143000
DTEND;TZID=America/New_York:20150105T153000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=25557
SUMMARY:Computational and Applied Mathematics Colloquium - TBA
DESCRIPTION:Seminar: Computational and Applied Mathematics Colloquium\nTitl
e: TBA\nAbstract Link: http://
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150112T143000
DTEND;TZID=America/New_York:20150112T153000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=25558
SUMMARY:Computational and Applied Mathematics Colloquium - Geological Stora
ge of CO2: Modeling approaches for large-scale simulation
DESCRIPTION:Seminar: Computational and Applied Mathematics Colloquium\nTitl
e: Geological Storage of CO2: Modeling approaches for large-scale simulati
on\nSpeaker: Jan Nordbotten\, University of Bergen (Host: L. Zikatanov)\nA
bstract: We discuss the challenges of large-scale simulation for CO2 stora
ge. In particular\, we will emphasize some of the fundamental challenges a
ssociated with the scale of the problem\, and illustrate their impact on t
raditional numerical simulation techniques. Furthermore\, we will discuss
how multi-scale formalism can be exploited to yield large-scale models of
conceptual and practical interest.
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150119T143000
DTEND;TZID=America/New_York:20150119T153000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=25559
SUMMARY:Computational and Applied Mathematics Colloquium - TBA
DESCRIPTION:Seminar: Computational and Applied Mathematics Colloquium\nTitl
e: TBA\nSpeaker: Martin Luther King Day - No Classes
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150126T143000
DTEND;TZID=America/New_York:20150126T153000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=25560
SUMMARY:Computational and Applied Mathematics Colloquium - Modeling Blood C
ell-Substrate Interaction and Biofilm-Fluid Interaction
DESCRIPTION:Seminar: Computational and Applied Mathematics Colloquium\nTitl
e: Modeling Blood Cell-Substrate Interaction and Biofilm-Fluid Interaction
\nSpeaker: Zhiliang Xu\, University of Notre Dame (Host: Chun)\nAbstract:
In this talk\, two different models will be discussed. The first model is
for studying blood cell-environment interaction\, specially platelet-blood
vessel wall interaction. Platelets aggregation at the injury site of the
blood vessel occurring via platelet-platelet adhesion\, tethering and roll
ing on the injured endothelium is a critical initial step in blood clot fo
rmation. To understand this critical step\, a hybrid model is developed to
represent membranes of biological cells and the distributed-Lagrange-mult
iplier/fictitious-domain (DLM/FD) formulation is used for simulating the f
luid-cell interactions. For modeling cell-substrate adhesion\, a stochast
ic receptor-ligand binding submodel is used. In the second part of the tal
k\, a biofilm model which systemically couples bacterial\, extracellular
polymeric substances (EPS) and solvent phases in biofilm will be discussed
. The model is derived by using energetic variational approach and phase-f
ield method coupling different phases together. An unconditionally energy-
stable numerical splitting scheme is implemented for computing numerical s
olution of the model efficiently.
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150202T143000
DTEND;TZID=America/New_York:20150202T153000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=25561
SUMMARY:Computational and Applied Mathematics Colloquium - Chemistry and Bi
ology Need Variational Models
DESCRIPTION:Seminar: Computational and Applied Mathematics Colloquium\nTitl
e: Chemistry and Biology Need Variational Models\nSpeaker: Bob Eisenberg\,
Rush Medical Center (Host: J Xu)\nAbstract: Mathematics is responsible fo
r most of our standard of living\, but no one seems to know that. The quan
titatively reliable calculations of structural mechanics makes tall buildi
ngs possible\; the quantitatively reliable calculations of fluid mechanics
makes airplanes possible (as well as plumbing)\; most importantly the qua
ntitatively reliable calculations of electronics makes our semiconductor t
echnology possible\, and that has remade our lives. Our computer technolog
y is one billion times more capable than when I was a graduate student! Wi
thout PNP (called drift diffusion in computational electronics)\, semicond
uctor technology would be crippled. Indeed\, it would not exist.\n\nMathem
atics has been a much less reliable guide in chemistry and biology. Biolog
ical sciences are almost entirely sophisticated trial and error. Chemical
sciences use mathematics more to interpret than design. Chemical models mu
st change parameters in ways that cannot be predicted as conditions change
. Chemical models are rarely “transferrable” to use their language.\n
\nThe ‘law of mass action’ is the foundation of most chemical and biol
ogical theory\, because it seems a simple statement of conservation of mas
s. The law of mass action leads to models that cannot be used in more than
one set of conditions\, in most cases. The law of mass action is incompat
ible with the laws of electricity. It does not conserve charge movement be
cause it does not deal with charge at all. Models built ONLY on the law of
mass action are local. Electrical behavior and its laws are global. Very
specifically\, everyone knows that “current flows in loops”. Everyone
knows that interruptions in current flow anywhere in a series of reactions
interrupts the flow everywhere. Schemes built only from the law of mass a
ction (conservation of matter as used in chemical theory) do not have this
property.\n\nVariational methods can deal with global interacting systems
like these. Variational methods can combine conservation laws for mass an
d electric current. But those methods have not been available for dissipat
ive systems. Mathematics of chemistry and biology must deal with dissipati
on\, because friction is everywhere in condensed phases. There is no empty
space in condensed phases\, so when something moves\, it collides and dis
sipates energy into the randomized motion we call heat.\n\nVariational met
hods have now been extended to include dissipative systems\, like those fo
und throughout biology and chemistry\, thanks to Chun Liu\, more than anyo
ne else. I will show in detail how current flow in a wide variety of syste
ms needs such mathematics. I will show our variational model of ions in so
lutions and in biological molecules called ion channels.\n\nI will seek he
lp in solving these models and converting them into specific predictions o
f experiments.\n\nMathematics in chemistry and biology promises to make mo
dels as reliable as those of semiconductors. Technological progress will v
astly accelerate in biology and nanosciences\, include chemistry\, when tr
ial and error experimentation can be catalyzed by models that are quantita
tively reliable.
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150209T143000
DTEND;TZID=America/New_York:20150209T153000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=25562
SUMMARY:Computational and Applied Mathematics Colloquium - Transport type p
roblems in bounded domains
DESCRIPTION:Seminar: Computational and Applied Mathematics Colloquium\nTitl
e: Transport type problems in bounded domains\nSpeaker: Nikolai Chementov
\, Lisbon\, Portugal (Host: Anna)\nAbstract: In this talk\, we will presen
t an overview of results\, related with transport type problems\, consider
ed in bounded domains. We present two principal ideas: "renormalization pr
operty" and "Green's theorem"\, which are used in the study of these probl
ems. These two ideas permit to solve di?erent transport type problems\, su
ch as:\n1) Euler equations in the bounded domain\n2) the boundary layer pr
oblem\n3) Buckley-Leverett-Brinkman problem for the porous media.
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150216T143000
DTEND;TZID=America/New_York:20150216T153000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=25563
SUMMARY:Computational and Applied Mathematics Colloquium - Spatially explic
it theory of partial migration evolution
DESCRIPTION:Seminar: Computational and Applied Mathematics Colloquium\nTitl
e: Spatially explicit theory of partial migration evolution\nSpeaker: Tim
Reluga
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150223T143000
DTEND;TZID=America/New_York:20150223T153000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=25567
SUMMARY:Computational and Applied Mathematics Colloquium - Stability and mo
notonicity in the low order discretizations of Biot’s model
DESCRIPTION:Seminar: Computational and Applied Mathematics Colloquium\nTitl
e: Stability and monotonicity in the low order discretizations of Biot’s
model\nSpeaker: Ludmil Zikatanov\, Penn State\nAbstract: We consider a fi
nite element discretizations of the Biot's model in poroelasticity with lo
west order finite elements: MINI element\; stabilized P1-P1 element and Cr
ouzeix-Raviart-P0 element. We address the issue related to the presence o
f non-physical oscillations in the pressure approximations for low permeab
ilities and/or small time steps. We show that in some cases\, even in 1D\,
Stokes-stable finite element pair does not provide a monotone discretizat
ion for low permeabilities. We then introduce a stabilization term which r
emoves the oscillations. We present numerical results confirming the monot
one behavior of the stabilized schemes.
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150302T143000
DTEND;TZID=America/New_York:20150302T153000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=25565
SUMMARY:Computational and Applied Mathematics Colloquium - Generalized Pois
son Boltzmann and Differential Capacitance data: an inverse problem
DESCRIPTION:Seminar: Computational and Applied Mathematics Colloquium\nTitl
e: Generalized Poisson Boltzmann and Differential Capacitance data: an inv
erse problem\nSpeaker: Nir Gavish\, Technion – Israel Institute of Techn
ology (Host: C Liu)\nAbstract: The contact between a charged object (metal
surface\, macromolecule\, membrane\, etc.) and an electrolyte solution re
sults in the rearrangement of ion distribution near the interface and form
ation of the so-called electrical double layer. One of the important expe
rimentally available quantities for characterising the structure of electr
olyte solutions near such interfaces are differential capacitance measurem
ents. From a mathematical point of view\, the double layer structure is c
ommonly modelled by the Poisson-Boltzmann equation and generalizations of
it.\n\nIn this work\, we conduct a systematic study of the differential ca
pacitance data. In particular\, we focus on the inverse problem: Given di
fferential capacitance data\, we ask whether it is possible to derive a ge
neralized Poisson-Boltzmann model which gives rise to the prescribed data.
We show that such models do exist\, characterise their variational actio
n in terms of a PDE\, and provide a method for solving the PDE and derivin
g the appropriate generalized Poisson-Boltzmann model. This method does n
ot yield a unique model\, and so we find that a wide class of models can g
ive rise to the same differential capacitance data.\n\nUsing our method\,
we derive generalized Poisson-Boltzmann models from differential capacitan
ce data coming from either theoretical models or experimental measurements
. In particular\, derive novel models which accurately recover experiment
al data.\n\nThis is a joint work with Keith Promislow.
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150309T143000
DTEND;TZID=America/New_York:20150309T153000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=25566
SUMMARY:Computational and Applied Mathematics Colloquium - TBA
DESCRIPTION:Seminar: Computational and Applied Mathematics Colloquium\nTitl
e: TBA\nSpeaker: Spring Break\, No Classes
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150316T143000
DTEND;TZID=America/New_York:20150316T153000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=25564
SUMMARY:Computational and Applied Mathematics Colloquium - TBA
DESCRIPTION:Seminar: Computational and Applied Mathematics Colloquium\nTitl
e: TBA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150323T143000
DTEND;TZID=America/New_York:20150323T153000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=25568
SUMMARY:Computational and Applied Mathematics Colloquium - An introduction
to the Vlasov-Poisson system
DESCRIPTION:Seminar: Computational and Applied Mathematics Colloquium\nTitl
e: An introduction to the Vlasov-Poisson system\nSpeaker: Daniel Han-Kwan
\, Ecole Polytechnique\, France (Host: Alberto and Toan)\nAbstract: The Vl
asov-Poisson system is a classical model of plasma physics\, used to descr
ibe the dynamics in phase space of interacting charged particles. We shall
review in this lecture some remarkable mathematical properties of this sy
stem. The topics reviewed should include (1) the existence of weak or stro
ng solutions\, (2) the stability and instability theory of certain equilib
ria\, (3) the quasineutral limit\, i.e. the regime when the Debye length i
s small compared to the typical observation length.
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150330T143000
DTEND;TZID=America/New_York:20150330T153000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=25569
SUMMARY:Computational and Applied Mathematics Colloquium - Energy-Stable Op
en Boundary Conditions for Two-Phase Outflows
DESCRIPTION:Seminar: Computational and Applied Mathematics Colloquium\nTitl
e: Energy-Stable Open Boundary Conditions for Two-Phase Outflows\nSpeaker:
Suchuan Steven Dong\, Purdue University (Host: Maxx)\nAbstract: This talk
focuses on the motion of a mixture of two immiscible incompressible fluid
s in a domain with open boundaries. The domain boundary is open in the sen
se that the fluids can freely leave or even enter the domain through such
boundaries. In particular\, we concentrate on situations where the interfa
ce formed between the two fluids passes through the open portions of the d
omain boundary. The problem therefore involves truly two-phase outflow/ope
n boundaries.\n The challenge facing the design of effective techniques f
or treating two-phase outflows in numerical simulations is manifold. Some
of the primary issues are associated with the viscosity contrasts\, densit
y contrasts\, surface tension\, and the presence of fluid interface\, back
flows or strong vortices on the open boundaries. Large density ratios and
large viscosity ratios of the two fluids make two-phase outflow simulation
s tremendously challenging.\n In this talk we present a set of boundary c
onditions\, and an associated numerical algorithm\, for two-phase outflow
simulations within the phase field framework. These open boundary conditi
ons have the characteristic that they all ensure the energy stability of t
he two-phase system\, even in situations where strong vortices\, backflows
\, large density contrast and\nlarge viscosity contrast are present at the
open boundaries. We will show the physical accuracy of the method by comp
aring simulation results with the theory and experimental data. Numerical
experiments will be presented to demonstrate the long-term stability of th
e method in situations where large density contrast\, large viscosity cont
rast\, and backflows are present at the outflow/open boundaries.
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150406T143000
DTEND;TZID=America/New_York:20150406T153000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=25570
SUMMARY:Computational and Applied Mathematics Colloquium - TBA
DESCRIPTION:Seminar: Computational and Applied Mathematics Colloquium\nTitl
e: TBA\nSpeaker: Richard Tsai\, University of Texas\, Austin (Host: Xianta
o)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150413T143000
DTEND;TZID=America/New_York:20150413T153000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=25571
SUMMARY:Computational and Applied Mathematics Colloquium - TBA
DESCRIPTION:Seminar: Computational and Applied Mathematics Colloquium\nTitl
e: TBA\nSpeaker: Olivier Glass\, Université Paris-Dauphine (Host: Bressan
)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150420T143000
DTEND;TZID=America/New_York:20150420T153000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=25554
SUMMARY:Computational and Applied Mathematics Colloquium - TBA
DESCRIPTION:Seminar: Computational and Applied Mathematics Colloquium\nTitl
e: TBA\nSpeaker: Ilya Mishev\, ExxonMobil Upstream Research Company (Host:
Ludmil)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150427T143000
DTEND;TZID=America/New_York:20150427T153000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=25555
SUMMARY:Computational and Applied Mathematics Colloquium - TBA
DESCRIPTION:Seminar: Computational and Applied Mathematics Colloquium\nTitl
e: TBA\nSpeaker: Reiner Kress\, Georg August University\, Goettingen (Host
: Zikatanov)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150504T143000
DTEND;TZID=America/New_York:20150504T153000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=25556
SUMMARY:Computational and Applied Mathematics Colloquium - TBA
DESCRIPTION:Seminar: Computational and Applied Mathematics Colloquium\nTitl
e: TBA\nSpeaker: Wolfgang Losert\, University of Maryland (Host: Andrew)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20150511T143000
DTEND;TZID=America/New_York:20150511T153000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=25553
SUMMARY:Computational and Applied Mathematics Colloquium - TBA
DESCRIPTION:Seminar: Computational and Applied Mathematics Colloquium\nTitl
e: TBA\nAbstract Link: http://
END:VEVENT
END:VCALENDAR