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DTSTART;VALUE=DATE:20170828
DTEND;VALUE=DATE:20170901
DTSTAMP:20180409T145705Z
CREATED:20170209T095940Z
LAST-MODIFIED:20180409T145705Z
UID:1035-1503878400-1504223999@alop.uni-trier.de
SUMMARY:Autumn School: Optimization in Machine Learning and Data Science
DESCRIPTION:Large parts of the new economy rely on data science and the application of machine learning. For handling these modern computational and statistical problems\, optimization algorithms are of utmost importance. The typically large data sets involved in this context urge for new optimization techniques. \nTherefore\, we are delighted to announce Julian Hall\,  Tamara G. Kolda\, Stephen Wright as speakers at the upcoming ALOP Autumn School entitled “Optimization in Machine Learning and Data Science.” \nRepresenting three top class authorities in their respective fields of research\, reaching from optimization of signal and image processing over large scale linear programming problems to tensor decomposition and many more\, they will be sharing their experience and knowledge on theory and application of optimization algorithms. \nAutumn School 2017 Program (click for download) \nRegistration is closed \nInformation on scheduled Speakers:  \n  \nJulian Hall\, The University of Edinburgh –   \nHis research interests are the development of algorithmic and computational techniques for solving large scale linear programming (LP) problems using the revised simplex method on both serial and parallel computers. Consequential research interest is the application of these techniques in other areas of computation optimization and linear algebra. \nMr. Hall plans on talking about high performance simplex which will naturally lead into high performance numerical computation. He will look at computational issues in interior point methods and the applicability of “modern” first order methods to the solution of LP problems\, as well as talk about one of his current research topics. \n  \n Tamara G. Kolda\, Sandia National Laboratories –   \nHer research interests are computational algorithm design and development\, including linear and multi-linear algebra\, tensor decomposition\, tensor eigenvalues\, graph algorithms\, machine learning\, network science\, derivative-free optimization\, computational optimization\, distributed and parallel computing. \nMs. Kolda will talk about “Optimization Approaches for Fitting the Canonical Tensor Decomposition.” More specifically\, she will speak about \n\nthe theory and background of the CP decomposition\nstandard approaches such as alternating least squares and all-at-once optimization\nhandling missing data\npractical approaches to choosing the rank\nalternative objective functions for other statistical models/assumptions\nTime permitting\, she may also talk about HPC\, data structures\, parallelization\n\n  \nStephen J. Wright\, University of Wisconsin-Madison \n \nHis research interests are in continuous optimization algorithms and their applications. He works on devising algorithms for fundamental problems in continuous optimization (with practical relevance) and in understanding their theoretical properties. He also enjoys working with domain scientists and engineers in such areas as data analysis and machine learning\, machine learning\, process control\, and computer architecture to solve problems in these areas using formulation and solution techniques from optimization. \nMr. Wright will cover the background of fundamental algorithmic approaches that are relevant to data analysis problems. Topics will include the following: \n– first-order (gradient) methods for smooth unconstrained   minimization. \n    Steepest descent\, accelerated gradient and other momentum methods. \n– minimization of objectives with “simple” regularization terms using \n    forward-backward/prox-linear methods. \n– stochastic gradient and subgradient methods for minimizing convex objectives with “summation” form. \n– second-order methods for smooth (convex and nonconvex) objectives.  Newton’s method and methods that explicitly use \n   negative curvature information. \nWe will also give a survey of current use of optimization methodology in data analysis. \n  \nOrganizers:  \n  \nJan Pablo Burgard\, Ralf Münnich\, Ekkehard Sachs\, Volker Schulz\, Sven de Vries  \nSchedule\, Location and Travel Information:  \n  \nFeel free to download a copy of the schedule here:  Autumn School 2017 Program \nThe workshop is scheduled to begin on Monday\, August 28 at 9:00 am and end on Thursday\, August 31 in the afternoon.\n The workshop will take place in Building E located on Campus I at Trier University. \n For travel tips on how to get to Trier\, please check  here;\n Instructions on how to find Campus I are located here. \n \n  \nHotel Room Reservations \nWe have a reserved a hotel room contingent at the Altstadt Hotel\, Am Porta Nigra Platz\, 54292 Trier. Please contact them directly to make your reservations referencing the AUTUMN SCHOOL 2017. \nThe contingent will be available for reservation until August 1\, 2017\, or until all available rooms have been booked. \nRegistration information: \nThere will be a registration fee of 70 €. Detailed payment information will be communicated upon registration. \nQualified participants may be eligible for a stipend to assist with travel expenses. In order to be considered for the stipend\, please submit a CV (which should include the names and contact information of two professional references) along with a one-page letter of motivation before June 15\, 2017. \nRegistration is closed
URL:https://alop.uni-trier.de/event/autumn-school-optimization-in-machine-learning-and-data-science/
LOCATION:Trier University\, E Building\, Universitätsring 15\, Trier\, Germany
CATEGORIES:Workshop
ORGANIZER;CN="Research Training Group ALOP at Trier University":MAILTO:OptimizationDays@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20170908T100000
DTEND;TZID=Europe/Berlin:20170908T120000
DTSTAMP:20170620T094938Z
CREATED:20170426T141532Z
LAST-MODIFIED:20170620T094938Z
UID:1246-1504864800-1504872000@alop.uni-trier.de
SUMMARY:ALOP Colloquium with Prof. Tim Kelley
DESCRIPTION:On Friday\, September 8\, 2017\, Prof. Tim Kelley of North Carolina State University  will join the ALOP-Colloquium and present his recent work entitled \n  \nAnderson Acceleration \n  \nAbstract: \n  \nWe will discuss recent results on the local convergence of Anderson Acceleration. This is an algorithm for accelerating the convergence of fixed point or Picard iteration. In this talk we will discuss the first convergence results for the method\, illustrate the results with an application to radiative transport\, discuss issues with multi-physics coupling\, and list a few open questions \nThe presentation will take place in HS9. \nPlease join us for coffee at 9:45 in E10. \n  \n 
URL:https://alop.uni-trier.de/event/alop-colloquium-with-prof-tim-kelley/
LOCATION:Trier University E Building\, Universitätsring 15\, Trier\, 54296\, Germany
CATEGORIES:Colloquium
ORGANIZER;CN="Research Training Group ALOP at Trier University":MAILTO:OptimizationDays@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20171023T160000
DTEND;TZID=Europe/Berlin:20171023T180000
DTSTAMP:20171013T104735Z
CREATED:20171011T115612Z
LAST-MODIFIED:20171013T104735Z
UID:1504-1508774400-1508781600@alop.uni-trier.de
SUMMARY:ALOP-Colloquium with Prof. MK (Mapundi) Banda
DESCRIPTION:On Monday\, October 23\, 2017\, at 16:00 Prof. MK (Mapundi) Banda of the University of Pretoria will join the ALOP-Colloquium and present his recent work entitled \nOptimal Control\, Stabilization and Parameter Identification for evolution models \nEvolution models governed by the time-dependent partial differential equations will be considered. In this talk\, we will present some ideas on optimal control\, boundary stabilization and parameter identification for a selection of such models.  For instance\, boundary information will be used to stabilise or to identify parameters of the models.  The first part of the presentation will discuss numerical optimal control and stabilisation of hyperbolic conservation laws.  The second part will discuss how boundary measurements can be used to simultaneously identify a coefficient and an initial condition of a parabolic partial differential equation using an identification algorithm.  Numerical algorithms will be discussed and the effectiveness of the proposed algorithms will also be demonstrated. \nThe presentation will take place in HS9. \nPlease join us for coffee at 15:45 in E10.
URL:https://alop.uni-trier.de/event/alop-colloquium-prof-mk-mapundi-banda-university-of-pretoria/
LOCATION:Trier University E Building\, Universitätsring 15\, Trier\, 54296\, Germany
CATEGORIES:Colloquium
ORGANIZER;CN="Research Training Group ALOP at Trier University":MAILTO:OptimizationDays@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20171106T160000
DTEND;TZID=Europe/Berlin:20171106T170000
DTSTAMP:20170921T104958Z
CREATED:20170912T121756Z
LAST-MODIFIED:20170921T104958Z
UID:1447-1509984000-1509987600@alop.uni-trier.de
SUMMARY:ALOP-Colloquium with Dr. Venera Khoromskaia
DESCRIPTION: Dr. Verena Khoromskaia of the Max-Planck-Institute für Mathematik in den Naturwissenschaften will join the ALOP-Colloquium and present her recent work entitled \nTensor numerical methods in computational quantum chemistry \non Monday\, November 6\, 2017 at 16:00.  \nWe will meet for coffee prior to her presentation at 15:45 in room E10. The presentation will take place in HS9.
URL:https://alop.uni-trier.de/event/alop-colloquium-with-dr-venera-khoromskaia/
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20171106T170000
DTEND;TZID=Europe/Berlin:20171106T180000
DTSTAMP:20170921T104931Z
CREATED:20170912T120726Z
LAST-MODIFIED:20170921T104931Z
UID:731-1509987600-1509991200@alop.uni-trier.de
SUMMARY:ALOP-Colloquium with Prof. Boris N. Khoromskij
DESCRIPTION:On Monday\, November 6\, 2017\,  Prof. Dr. Boris Khoromskij from the Max-Planck-Institute für Mathematik in den Naturwissenschaften will join the ALOP-Colloquium and present his recent work entitled \nTensor numerical methods for multi-dimensional PDE’s and in data modeling \non Monday\, November 6\, 2017 at 17:00.   \nThe presentation will take place in HS9.
URL:https://alop.uni-trier.de/event/alop-colloquium-with-boris-n-khoromskij/
LOCATION:Trier University E Building\, Universitätsring 15\, Trier\, 54296\, Germany
CATEGORIES:Colloquium
ORGANIZER;CN="Research Training Group ALOP at Trier University":MAILTO:OptimizationDays@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20171120T160000
DTEND;TZID=Europe/Berlin:20171120T180000
DTSTAMP:20171108T134015Z
CREATED:20171026T112133Z
LAST-MODIFIED:20171108T134015Z
UID:1555-1511193600-1511200800@alop.uni-trier.de
SUMMARY:ALOP-Colloquium with Prof. John Pearson
DESCRIPTION:On Monday\, November 20\, 2017\, at 16:00  Prof. John Pearson of School of Mathematics\, The University of Edinburgh will join the ALOP-Colloquium and present his recent work entitled \nFour Perspectives on Preconditioning PDE-Constrained Optimization Problems \nAbstract: \nPDE-constrained optimization problems have a wide range of applications across numerical mathematics and applied science\, so it is important to develop fast and feasible methods to solve such problems. We employ preconditioned iterative methods to tackle the large and sparse matrix systems that arise from their discretization\, and consider a range of issues related to these solvers. In particular\, we discuss applications of reaction-diffusion control problems in mathematical biology\, strategies for handling additional box constraints on the PDE variables\, approaches for problems involving fractional derivatives\, and deferred correction methods for time-dependent problems. \nThe presentation will take place in HS9 \nPlease join us for coffee at 15:45 in E10
URL:https://alop.uni-trier.de/event/alop-colloquium-with-prof-john-pearson/
LOCATION:Trier University E Building\, Universitätsring 15\, Trier\, 54296\, Germany
CATEGORIES:Colloquium
ORGANIZER;CN="Research Training Group ALOP at Trier University":MAILTO:OptimizationDays@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20171204T160000
DTEND;TZID=Europe/Berlin:20171204T180000
DTSTAMP:20171121T134423Z
CREATED:20171011T120302Z
LAST-MODIFIED:20171121T134423Z
UID:1508-1512403200-1512410400@alop.uni-trier.de
SUMMARY:ALOP-Colloquium with Prof. Ekaterina Kostina
DESCRIPTION:On Monday\, December 4\, 2017\, at 16:00 Prof. Ekaterina Kostina of Heidelberg University will join the ALOP-Colloquium and present her recent work entitled \n  \nOptimization-Based Model Validation – a Mathematical Technology of High Impact \nValidated dependable mathematical models are of ever growing importance in science and engineering\, and today also driven by a serious demand of the industry. Apart from providing scientific insight into complex nonlinear processes\, mathematical models are fundamental for process simulation\, optimization and control. In this context the new paradigmatic concept of “digital twins” may be worth mentioning\, which is becoming more and more attractive among researchers from different industrial companies\, and is advocated by NASA\, GE\, Siemens and others. Its idea is that every new system\, product or a physical or economical process should be accompanied by a “digital twin”\, which comprises an ensemble of mathematical models and algorithms. This collection of models\, analysis and solution algorithms – a virtual avatar or virtual double – would ideally accompany the process from the “origin” through its life time\, “grow” together with this process\, and be used among others to analyze data\, predict malfunctioning and perform optimal operation. However\, the application of mathematical models for the simulation\, and even more for the optimization and control of complex engineering processes requires their thorough validation and calibration by parameter and state estimation based on process data\, which should preferably be obtained by optimized experiments\, and optimized measurement designs.  For the latter\, very efficient numerical methods for the complex non-standard optimal control problem of optimal experimental design for dynamic processes were developed\, which have proven to be a powerful mathematical instrument/technology of high economic impact in industrial practice. \n  \nThe talk will address new developments in optimization methods for validation and calibration of models\, in particular the design of robust optimal experiments based on a second order sensitivity analysis of parameter estimates and design of optimal experiments for PDE models. \n  \nThe presentation will take place in HS9. \nPlease join us for coffee at 15:45 in E10.
URL:https://alop.uni-trier.de/event/alop-colloquium-with-prof-ekaterina-kostina-heidelberg-university/
LOCATION:Trier University E Building\, Universitätsring 15\, Trier\, 54296\, Germany
CATEGORIES:Colloquium
ORGANIZER;CN="Research Training Group ALOP at Trier University":MAILTO:OptimizationDays@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20180122T160000
DTEND;TZID=Europe/Berlin:20180122T180000
DTSTAMP:20171213T084948Z
CREATED:20171011T122606Z
LAST-MODIFIED:20171213T084948Z
UID:1513-1516636800-1516644000@alop.uni-trier.de
SUMMARY:ALOP-Colloquium with Prof. Andrea Walther
DESCRIPTION:On Monday\, January 22\, 2018\, at 16:00 Prof. Andrea Walther of Paderborn University will join the ALOP-Colloquium and present her recent work entitled: \nRecent progress in the optimization of piecewise smooth functions \nIn a previous paper\, we derived first and second order convexity conditions for a large class  of piecewise smooth functions. \nIn that analysis based on piecewise linearization\, a key assumption was the Linear Independence Kink Qualification (LIKQ)\, a generalization of the Linear Independence Constraint Qualification (LICQ) known from smooth nonlinear optimization. In this talk\, we discuss recent results for the optimization of this class of functions. \nThis includes that even without any kink qualifications\, local optimality of the nonlinear objective always requires local optimality of its piecewise linearization\, and strict minimality of the latter is in fact equivalent to strong local minimality of the former.  Moreover\, we analyse convergence rates for an optimization algorithm based on successive piecewise linearization. Numerical results illustrate the theoretical findings. \n  \nThis is joint work with Andreas Griewank\, Yachay Tech\, Ecuador \n  \nThe presentation will take place in HS9. \nPlease join us for coffee at 15:45 in E10.
URL:https://alop.uni-trier.de/event/alop-colloquium-with-prof-andrea-walther/
LOCATION:Trier University E Building\, Universitätsring 15\, Trier\, 54296\, Germany
CATEGORIES:Colloquium
ORGANIZER;CN="Research Training Group ALOP at Trier University":MAILTO:OptimizationDays@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20180206T120000
DTEND;TZID=Europe/Berlin:20180206T120000
DTSTAMP:20171120T071726Z
CREATED:20171017T122334Z
LAST-MODIFIED:20171120T071726Z
UID:1522-1517918400-1517918400@alop.uni-trier.de
SUMMARY:ALOP- Colloquium with Prof. Fredi Troeltzsch
DESCRIPTION:On Tuesday\, February 6\, 2018\, at 12:00  Prof. Fredi Tröltzsch of TU Berlin will present his recent work entitled  \nOptimal and Feedback Control of some Reaction-Diffusion Equations \nThe optimal control of some systems of nonlinear reaction-diffusion equations is considered including several important equations of mathematical physics. In particular\, equations are covered that develop traveling wave fronts\, spiral waves\, scroll rings\, or propagating spot solutions. Well-posedness of the system\, differentiability of the control-to-state mapping\, and optimality conditions of first and second order are briefly sketched. In particular\, the case of sparse optimal control is addressed. A novel application of pointwise state constraints is presented that prevent a propagating spot from hitting the boundary of the spatial domain. Finally\, the optimization of time-delays in local and nonlocal Pyragas type feedback control is discussed. Various numerical examples illustrate a great diversity of geometrical patterns and their control. \nThe presentation will take place in E51. \nPlease join us for coffee at 11:45 in E51.
URL:https://alop.uni-trier.de/event/alop-colloquium-with-prof-fredi-troeltzsch/
LOCATION:Trier University E Building\, Universitätsring 15\, Trier\, 54296\, Germany
CATEGORIES:Colloquium
ORGANIZER;CN="Research Training Group ALOP at Trier University":MAILTO:OptimizationDays@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20180226T160000
DTEND;TZID=Europe/Berlin:20180226T180000
DTSTAMP:20180216T094706Z
CREATED:20180131T161505Z
LAST-MODIFIED:20180216T094706Z
UID:1841-1519660800-1519668000@alop.uni-trier.de
SUMMARY:ALOP-Colloquium with Prof. Dr. Geovani Grapiglia
DESCRIPTION:Prof. Dr. Geovani Grapiglia of the Universidade Federal do Parana in Curitiba\, PR\, Brasil will visit with the students of the RTG ALOP to discuss his research as well as speak during our colloquium on the topic of \nImproved Optimization Methods for Image Registration Problems \n \n Abstract: In many applications\, multiple images of the same subject are obtained at different moments in time and under different conditions. The goal is to identify changes in the subject over time. For a fair comparison\, the images need to be aligned in order to overlap the common features. Image Registration is the problem to find the transformation of images leading to the best overlapping. The mathematical modelling of this type of problem often results in large-scale unconstrained optimization problems to solve. The usual approach is to apply Gauss-Newton Method with Armijo line-search embedded in a multi-level coarse-to-fine scheme\, where the solution of the coarse level is used to generate the initial point for the fine level. In this talk\, two alternative approaches will be discussed\, including the use of L-BFGS and subspace techniques. \n  \nThe Colloquium talk with take place in HS 9 at 16:00 c.t.  Please join us for coffee at 15:45 in E 10. \nWe are very pleased to welcome him in Trier!
URL:https://alop.uni-trier.de/event/prof-dr-geovani-grapiglia-to-visit-with-rtg-alop/
LOCATION:Trier University\, E Building\, Universitätsring 15\, Trier\, Germany
CATEGORIES:Colloquium,Scientific Research Collaboration
ORGANIZER;CN="Research Training Group ALOP at Trier University":MAILTO:OptimizationDays@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20180228T093000
DTEND;TZID=Europe/Berlin:20180228T160000
DTSTAMP:20180227T085608Z
CREATED:20180227T085608Z
LAST-MODIFIED:20180227T085608Z
UID:1866-1519810200-1519833600@alop.uni-trier.de
SUMMARY:Writing Mathematical Texts in English
DESCRIPTION:The Research Training Group on Algorithmic Optimization is offering a one-day workshop entitled \nWriting Mathematical Texts in English (instructor: Prof. Mirjam Dür) \non Wednesday\, February 28\, 2018 from 9:30 – 16:00 in E 51. \n 
URL:https://alop.uni-trier.de/event/writing-mathematical-texts-in-english/
CATEGORIES:Workshop
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20180301
DTEND;VALUE=DATE:20180304
DTSTAMP:20180131T160745Z
CREATED:20180131T160745Z
LAST-MODIFIED:20180131T160745Z
UID:1839-1519862400-1520121599@alop.uni-trier.de
SUMMARY:Retreat in Daun
DESCRIPTION:The Research Training Group plans its second retreat in Daun on the weekend of March 1 through March 3\, 2018. The researchers will present their work during this retreat\, followed by discussions and feedback from their advisors and fellow PhD students. Several team building events will also take place to complete the program.
URL:https://alop.uni-trier.de/event/retreat-in-daun/
CATEGORIES:Retreat
ORGANIZER;CN="Research Training Group ALOP at Trier University":MAILTO:OptimizationDays@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20180301
DTEND;VALUE=DATE:20180304
DTSTAMP:20180305T085427Z
CREATED:20180305T085427Z
LAST-MODIFIED:20180305T085427Z
UID:1873-1519862400-1520121599@alop.uni-trier.de
SUMMARY:ALOP held its second retreat in Daun
DESCRIPTION:In order to further the individual research projects and improve the team building process\, the Research Training Group Algorithmic Optimization (ALOP) spent three days at the Sporthotel Grafenwald in Daun. In addition to individual presentations by the PhD Students\, the event included in depth discussions on scientific and organizational aspects. \nFurthermore\, the RTG enjoyed a hike and an informative evening program which served to cultivate the pleasant team environment.
URL:https://alop.uni-trier.de/event/alop-held-its-second-retreat-in-daun/
CATEGORIES:Retreat
ATTACH;FMTTYPE=image/jpeg:https://alop.uni-trier.de/wp-content/uploads/2018/03/Retreat-2018.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20180305
DTEND;VALUE=DATE:20180307
DTSTAMP:20180228T133839Z
CREATED:20180201T075639Z
LAST-MODIFIED:20180228T133839Z
UID:1843-1520208000-1520380799@alop.uni-trier.de
SUMMARY:Prof. Juan Vera and Olga Kuryatnikova of Tilburg University to visit in March
DESCRIPTION:Prof. Juan Vera and Olga Kuryatnikova of Tilburg University are scheduled to visit the Research Training Group ALOP in March for research collaboration. \n  \nDuring their visit\, they will speak on the following topics: \n  \nCopositive certificates of non-negativity (Prof. Juan Vera) \nAbstract: \nSum-of-squares (sos) certificates of non-negativity\, such as Putinar’s Positivstellensatz\, have been used to obtain powerful numerical techniques to solve polynomial optimization (PO) problems. Using such certificates\, hierarchies of semidefinite relaxations are obtained for PO. Usually the use of sos-certificates requires compactness or stronger assumptions on the feasible set\, limiting the range of applications. \nWe show that under suitable conditions on the polynomial h(x) and the set S\, the non-negativity of a polynomial over the set  {x in S: h(x) = 0} can be certified in terms of the non-negative polynomials on S even if the set S is unbounded. Moreover\, a characterization of the pairs (S\, h) for which  such type of non-negativity certificate exists is provided in terms of an appropriate condition on S and h. Moreover\, the non-negativity certificate presented here readily allows the use of copositive polynomials (as opposed to the more common use of sos). In particular it encompasses the results of Burer and Pena-Vera-Zuluaga for representation of polynomial optimization problems as copositive ones. \n  \nApproximating the cone of copositive kernels with application to the kissing number problem. (Olga Kuryatnikova) \nAbstract: \nRecent research has shown how to generalize copositive formulations of the stable set problem in finite graphs to infinite graphs. This allows to express the kissing number problem\, i.e.\, finding the maximum number of non-overlapping unit spheres that can simultaneously touch another unit sphere\, as an optimization problem over copositive kernels. We generalize two existing approximations to the cone of copositive matrices to obtain approximations to the cone of copositive kernels. \nUsing the latter approximations\, we construct a hierarchy of upper bounds on the kissing number. As a side result\, we characterize positive definite functions invariant under automorphisms of the sphere fixing a given set of points. The presentation will be self-contained. \n  \nThe presentations will take place on Monday March 5 at 10:30 c.t. in E 51.
URL:https://alop.uni-trier.de/event/prof-juan-vera-and-olga-kuryatnikova-of-tilburg-university-to-visit-in-march/
LOCATION:Trier University\, E Building\, Universitätsring 15\, Trier\, Germany
CATEGORIES:Colloquium,Scientific Research Collaboration
ORGANIZER;CN="Research Training Group ALOP at Trier University":MAILTO:OptimizationDays@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20180416T160000
DTEND;TZID=Europe/Berlin:20180416T180000
DTSTAMP:20180322T124208Z
CREATED:20171011T123150Z
LAST-MODIFIED:20180322T124208Z
UID:1516-1523894400-1523901600@alop.uni-trier.de
SUMMARY:ALOP-Colloquium with Prof. Michael Günther
DESCRIPTION:On Monday\, April 16\, 2018\, at 16:00 Prof. Michael Günther of Bergische Universität Wuppertal will join the ALOP-Colloquium and present his recent work entitled \nEffiziente numerische Simulation multiphysikalischer Systeme \nMultiphysikalische Systeme werden oft durch Modelle beschrieben\, die DAE-Netzwerkmodelle mit partiellen Differentialgleichungen über geeignete Randbedingungen und Quellterme koppeln. Nach Semidiskretisierung im Ort hat man es dann mit großen\, gekoppelten DAE-Sytemen zu tun. In diesem Vortrag werden verschiedene Ansätze zu deren effizienter numerischer Simulation besprochen: Multirate-Verfahren und dynamsche Iteration. \n  \nThe presentation will take place in HS9. \nPlease join us for coffee at 15:45 in E10.
URL:https://alop.uni-trier.de/event/alop-colloquium-with-prof-michael-gunther/
LOCATION:Trier University E Building\, Universitätsring 15\, Trier\, 54296\, Germany
CATEGORIES:Colloquium
ORGANIZER;CN="Research Training Group ALOP at Trier University":MAILTO:OptimizationDays@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20180507T160000
DTEND;TZID=Europe/Berlin:20180507T180000
DTSTAMP:20180404T115859Z
CREATED:20180329T074610Z
LAST-MODIFIED:20180404T115859Z
UID:1943-1525708800-1525716000@alop.uni-trier.de
SUMMARY:ALOP-Colloquium with Kerstin Lux
DESCRIPTION:On Monday\, May 7\, 2018\, at 16:00\, Kerstin Lux of Universität Mannheim will join the ALOP-Colloquium and present her recent work entitled “Optimal inflow control in supply systems with uncertain demands.” \nAbstract: \nWe are concerned with optimal control strategies subject to uncertain demands. They\nhave a broad range of applications. Taking uncertainty into account becomes more and\nmore important in many areas. In the context of supply chain management\, a need\nfor control strategies taking these uncertainties into account naturally arises when it\ncomes to production planning. Deviations from the demand actually realized need to\nbe compensated\, which might be very costly and should be avoided. To this end\, we\nconsider different approaches to control the produced amount at a given time to meet\nthe stochastic demand in an optimal way. Supply chains are represented by transport\nequations and stochastic differential equations are used to model the uncertain demand.\nFinally\, the approaches will be compared in a numerical simulation study. \nThe presentation will take place in HS9. \nPlease join us for coffee at 15:45 in E10.
URL:https://alop.uni-trier.de/event/alop-colloquium-with-kerstin-lux/
CATEGORIES:Colloquium
ORGANIZER;CN="Research Training Group ALOP at Trier University":MAILTO:OptimizationDays@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20180514
DTEND;VALUE=DATE:20180526
DTSTAMP:20180322T151240Z
CREATED:20180322T151240Z
LAST-MODIFIED:20180322T151240Z
UID:1923-1526256000-1527292799@alop.uni-trier.de
SUMMARY:Research collaboration with Prof. Dr. Boris Khoromskij and Dr. Venera Khoromskaia
DESCRIPTION:Prof. Dr. Boris Khoromskij and Dr. Verena Khoromskaia of the Max-Planck-Institute für Mathematik in den Naturwissenschaften are scheduled to visit the RTG ALOP in May 2018 to discuss their recent research. \nPlease check back for further details as they become available.
URL:https://alop.uni-trier.de/event/research-collaboration-with-prof-dr-boris-khoromskij-and-dr-venera-khoromskaia/
LOCATION:Trier University E Building\, Universitätsring 15\, Trier\, 54296\, Germany
CATEGORIES:Scientific Research Collaboration
ORGANIZER;CN="Research Training Group ALOP at Trier University":MAILTO:OptimizationDays@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20180514T160000
DTEND;TZID=Europe/Berlin:20180514T180000
DTSTAMP:20180509T114804Z
CREATED:20180427T124603Z
LAST-MODIFIED:20180509T114804Z
UID:2004-1526313600-1526320800@alop.uni-trier.de
SUMMARY:ALOP-Colloquium with Prof. Partha Lahiri
DESCRIPTION:On Monday\, May 14\, 2018\, at 16:00\,  Prof. Partha Lahiri of the University of Maryland College Park will join the ALOP-Colloquium and present his recent work entitled “Big data in official statistics.” \nAbstract:  The demand for various socio-economic\, transportation\, and health statistics for small geographical areas is steadily increasing at a time when survey agencies are desperately looking for ways to reduce costs to meet fixed budgetary requirements.  In the current survey environment\, the application of standard sample survey methods for small areas\, which require a large sample\, is generally not feasible when considering the costs.    One of the key factors that lead to the success of small area estimation (SAE) methodology is the availability of strong auxiliary variables.  The accessibility of big data from different sources is now bringing new opportunities for statisticians to develop innovative SAE methods.  In this talk\, I will provide an outline of how SAE methods can be adapted to incorporate big data in improving local area statistics.  Then I will discuss my recent collaboration with my UMD colleagues — Professor Cinzia Cirillo of Department of Civil and Environmental Engineering\, and Professor Joseph JaJa of Department of Electrical and Computer Engineering\, and the University of Maryland Institute for Advanced Computer Studies (UMIACS).  Finally\, as an example from our different collaborative research projects\, I will explain how SAE can help solve a seemingly different problem of predicting in real-time traffic by exploiting rich vehicle probe big data. \nThe presentation will take place in HS9. \nPlease join us for coffee at 15:45 in E51.
URL:https://alop.uni-trier.de/event/alop-colloquium-with-prof-partha-lahiri/
LOCATION:Trier University E Building\, Universitätsring 15\, Trier\, 54296\, Germany
CATEGORIES:Colloquium
ORGANIZER;CN="Research Training Group ALOP at Trier University":MAILTO:OptimizationDays@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20180605T083000
DTEND;TZID=Europe/Berlin:20180612T100000
DTSTAMP:20180605T112959Z
CREATED:20180322T123945Z
LAST-MODIFIED:20180605T112959Z
UID:1911-1528187400-1528797600@alop.uni-trier.de
SUMMARY:Short Course on Parallel Optimization Methods for Time Dependent Problems
DESCRIPTION:Prof. Matthias Heinkenschloss with the Department of Computational and Applied Mathematics\, Rice University in Houston\, Texas is offering a short course on Parallel Optimization Methods for Time Dependent Problems at Trier University on behalf of the Research Training Group on Algorithmic Optimization.  \nThe course will consist of three lectures\, with the tentative lecture schedule to follow soon. \nThe lectures will take place on the following dates and times: \nTuesday\, June 5\, 2018 at 8:30 c.t. in HS 10 \nThursday\, June 7\, 2018 at 8:30 c.t. in HS 9 \nTuesday\, June 12\, 2018 at 8:30 c.t. in HS10 \nPlease refer back to this page for more information as it becomes available. \n 
URL:https://alop.uni-trier.de/event/short-course-on-parallel-optimization-methods-for-time-dependent-problems/
LOCATION:Trier University E Building\, Universitätsring 15\, Trier\, 54296\, Germany
CATEGORIES:Short Course
ORGANIZER;CN="Research Training Group ALOP at Trier University":MAILTO:OptimizationDays@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20180628T160000
DTEND;TZID=Europe/Berlin:20180628T173000
DTSTAMP:20180613T131257Z
CREATED:20180612T062200Z
LAST-MODIFIED:20180613T131257Z
UID:2165-1530201600-1530207000@alop.uni-trier.de
SUMMARY:ALOP-Colloquium with Mehiddin Al-Baali
DESCRIPTION:On Thursday\, June 28\, 2018\, at 16:00 c.t. Prof. Mehiddin Al-Baali\, Department of Mathematics and Statistics\, Sultan Qaboos University\, Muscat\, Oman will present his recent work entitled  \nOn the Damped Technique\, Self-Scaling and their Combination when Introduced to the Broyden Family of Methods for Unconstrained Optimization \nRecently\, we have extended the damped-technique in the modified BFGS method of Powell for constrained optimization to the Broyden family of quasi-Newton methods for unconstrained optimization. Appropriate choices for the damped parameter will be suggested to improve the performance of a restricted class of quasi-Newton methods and enforce convergence of many divergent methods. These properties will be illustrated when applied to a simple quadratic function as well as to a set of standard test problems. It will be shown that the proposed damped choices improve the performance of most quasi-Newton methods substantially (or significantly) in several cases. We will also illustrate the useful features of the self-scaling technique for quasi-Newton methods  and its combination with the above damped technique.  \n. \nThe presentation will take place in HS 9. \nPlease join us for coffee at 15:45 in E10.
URL:https://alop.uni-trier.de/event/alop-colloquium-with-mehiddin-al-baali/
CATEGORIES:Colloquium
ORGANIZER;CN="RTG ALOP at Trier University":MAILTO:ALOP@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20180716T080000
DTEND;TZID=Europe/Berlin:20180720T170000
DTSTAMP:20180615T122957Z
CREATED:20171018T130200Z
LAST-MODIFIED:20180615T122957Z
UID:1525-1531728000-1532106000@alop.uni-trier.de
SUMMARY:Women in Shape (WiSh) - a Collaborative Research Workshop
DESCRIPTION:The Collaborative Research Workshop Women in Shape -3 (WiSh): Modeling Objects in 2D and 3D will take place in Trier\, Germany from 16 July through 20 July\, 2018.   \nUnlike the traditional workshop format\, the focus of WiSh is to carry out a few designated research projects that will be initiated during the workshop and lead to a viable collaboration among the participants. \nParticipants: \nWe welcome applications from women researchers at various stages in their careers (from graduate student to senior researcher) from all over the world to foster research collaboration and mentorship. \nProjects: \nParticipants will spend one week working together in small groups to solve open questions in shape modeling. Potential topics may include shape optimization\, understanding shape complexity from multiple perspectives\, generating discrete formulations of variational problems and optimizing solutions\, and developing flexible\, robust\, and compact 2D and 3D shape representations. \nPlease click here for a list of the group topics and abstracts:  WiSh3_GroupProjects \nStructure: \nWiSh participants will begin generating new results in collaboration with other participants. Results form the workshop and related work may be submitted for consideration for publication in the Springer AWM Proceedings series. \nWorkshop Language: \nEnglish \nOrganizers: \nKathryn Leonard\, Occidental College (contact for applicants from America and Australia) \nGéraldine Morin\, University of Toulouse \nKathrin Welker\, Trier University (host) \n  \nA copy of the WiSh workshop program may be downloaded here \nRegistration:\n \nRegistration is now closed. \n  \nHotel: \nA contingent of single rooms and double rooms has been reserved at the Robert-Schuman-Haus in Trier\, the location of this year’s workshop.  You may reserve a room by contacting the location directly via e-mail or phone mentioning the keywork “WiSh” any time prior to May 4\, 2018. \nSchedule\, location\, and directions: \nThe workshop is scheduled to begin on Monday\, July 16 2018.  Participants are encouraged to arrive on Sunday\, July 15\, 2018. \nThe workshop will conclude on Friday\, July 20\, 2018. \nThe workshop will take place at the Robert-Schuman-Haus in Trier. \nCheck here for directions on how to get to Trier. \nPartially supported by NSF-HRD 1500481 – AWM ADVANCE  grant
URL:https://alop.uni-trier.de/event/women-in-shape-wish-a-collaborative-research-workshop/
LOCATION:Robert-Schuman-Haus\, Auf der Jüngt 1\, Trier\, Rhineland-Palatinate\, 54293\, Germany
CATEGORIES:Workshop
ORGANIZER;CN="Research Training Group ALOP at Trier University":MAILTO:OptimizationDays@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20180801T120000
DTEND;TZID=Europe/Berlin:20180801T140000
DTSTAMP:20180514T142457Z
CREATED:20180509T134417Z
LAST-MODIFIED:20180514T142457Z
UID:2018-1533124800-1533132000@alop.uni-trier.de
SUMMARY:Presentation by Dr. Christina Schenk of Carnegie Mellon University
DESCRIPTION:Dr. Christina Schenk\, an ALOP Alumni and current post doctoral fellow at Carnegie Mellon University\, will join us for research collaboration and speak during our research seminar on August 1\, 2018 on the following topic: \nParameter Estimation for Pharmaceutical Processes – Advancements and Case Studies \nAbstract: \nThe development of drug manufacturing processes involves dealing with spectroscopic data. When dealing with\n spectroscopic data\, the identification of parameters and variances still remains a challenging task. In many cases\n kinetic parameter identification from spectroscopic data has to be performed without knowing the absorbing\n species in advance\, such that they have to be estimated as well. However\, kinetic parameter estimation is\n important in order to lower production costs\, i.e. save measurements and equipment. Furthermore\, scaling up\n from laboratory to industrial level relies on accurate kinetic parameter values.\n That is why\, we take a closer look at the development of optimization-based procedures in order to estimate the\n variances of the noise in the system variables and spectral measurements. Then\, with the estimated variances\n we determine the concentration profiles and kinetic parameters simultaneously using adequate strategies. The\n work is based on the approach proposed by Chen et al. (2016) using maximum likelihood principles for simultaneous\n estimation of reaction kinetics and curve resolution from process and spectral data. For this a new\n software environment was developed which is continuously enhanced. These investigations and advancements\n are presented within this talk and illustrated by several case studies of pharmaceutical processes. \nJoint work with Lorenz T. Biegler (Carnegie Mellon University)\, Lu Han (Pfizer Inc.) and Jason Mustakis (Pfizer Inc.) \nReferences\n W. Chen\, L. Biegler\, and S. Muñoz. An approach for simultaneous estimation of reaction kinetics and curve resolution\n from process and spectral data. Journal of Chemometrics\, 30:506–522\, 2016. doi: 10.1002/cem.2808.\n URL http://dx.doi.org/10.1002/cem.2808. \n 
URL:https://alop.uni-trier.de/event/presentation-by-dr-christina-schenk-of-carnegie-mellon-university/
CATEGORIES:Scientific Research Collaboration
ORGANIZER;CN="Research Training Group ALOP at Trier University":MAILTO:OptimizationDays@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20180813
DTEND;VALUE=DATE:20180817
DTSTAMP:20180720T122054Z
CREATED:20180322T145011Z
LAST-MODIFIED:20180720T122054Z
UID:1915-1534118400-1534463999@alop.uni-trier.de
SUMMARY:Summer School 2018 - Mixed Integer Nonlinear Programming
DESCRIPTION:The Research Training Group on Algorithmic Optimization proudly announces its third annual Summer/Autumn School from August 13-16\, 2018. This year’s focus will be on Mixed Integer Non-Linear Programming. \n  \nConfirmed speakers are: \nOliver Bastert & Zsolt Csimadia (FICO\, Xpress Optimization) \nChristoph Buchheim (TU Dortmund) \nSven Leyffer (Argonne National Labratory) \nJeff Linderoth (University of Wisconsin-Madison) \n  \nOrganizers:  \n \nUlf Friedrich\, Volker Schulz\, Sven de Vries  \nYou may download a preliminary schedule here \nPlease find all the details at alop.uni-trier.de/MINLP
URL:https://alop.uni-trier.de/event/autumn-school-2018-mixed-integer-non-linear-programming/
LOCATION:Trier University E Building\, Universitätsring 15\, Trier\, 54296\, Germany
CATEGORIES:Workshop
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20180910
DTEND;VALUE=DATE:20180913
DTSTAMP:20180322T151903Z
CREATED:20180322T151811Z
LAST-MODIFIED:20180322T151903Z
UID:1926-1536537600-1536796799@alop.uni-trier.de
SUMMARY:EUCCO 2018 - 5th European Conference on Computational Optimization
DESCRIPTION:Registration for EUCCO 2018 is now open. Please refer to the detailed registration information located on the website.
URL:https://alop.uni-trier.de/event/eucco-2018-5th-european-conference-on-computational-optimization/
CATEGORIES:Conferences
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20181004T130000
DTEND;TZID=Europe/Berlin:20181006T110000
DTSTAMP:20210323T075203Z
CREATED:20180604T122236Z
LAST-MODIFIED:20210323T075203Z
UID:2132-1538658000-1538823600@alop.uni-trier.de
SUMMARY:Optimization Days - Math Workshop for Female Master Students
DESCRIPTION:Optimization Days – a Math Workshop for Female Master Students will take place in Trier\, Germany from 4 October through 6 October\, 2018.   \nGetting ready to cross the finish line? This workshop will support you in your final steps with courses on “How to write a Mathematical Thesis” by Prof. Dr. Mirjam Dür and “Presenting yourself in Public” by actress Barbara Ullmann. In addition\, you will have  a chance to meet with local PhD students to discuss your field of interest and collaborate on your research. \nParticipants: \nWe welcome applications from female students currently pursuing a master degree in mathematics. \nSchedule: \nThe workshop is scheduled to begin on Thursday\, October 4\, 2018 in the afternoon and conclude on Saturday\, October 6\, 2018 in the morning. \nPlease check back for more details as they are finalized. \nWorkshop Language: \nEnglish \nOrganizers: \nProf. Dr. Mirjam Dür\, Universität Augsburg \nSvenja Kohnemann\, Universität Trier (local host and contact person) \nRTG Algorithmic Optimization (ALOP) \nRegistration is now closed. \nThe reference and graduation information is needed to confirm your eligibility as a master student in the field of mathematics. \nRegistration Deadline:  August 13\, 2018  extended to September 15\, 2018\n \nUpon completion of the registration form\, participants will be eligible to receive a stipend.  Letters of invitation to attend the workshop and confirming eligibility will be sent via e-mail no later than September 20\, 2018. Should you need an invitation prior to that time\, please let us know. \nRegistration Fee: \n35 € \nAn invoice for the registration fee will be forwarded via e-mail on or about September 5\, 2018. Please follow the instructions for payment contained therein. \nHotel: \nParticipants will be staying at the  conference hotel (exact name and location to be announced).  We will make the reservations on your behalf. Please advise us of any special accomodation requirements. \nSchedule\, location\, and directions: \nThe workshop is scheduled to begin on Thursday\, October 4\, 2018 in the afternoon.  \nThe workshop will conclude on Saturday\, October 6\, 2018 in the morning. \nThe workshop will take place at Trier University on Campus I in Building E. \nCheck here for directions on how to get to Trier.
URL:https://alop.uni-trier.de/event/optimization-days
CATEGORIES:Workshop
ORGANIZER;CN="Research Training Group ALOP at Trier University":MAILTO:OptimizationDays@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20181029T160000
DTEND;TZID=Europe/Berlin:20181029T180000
DTSTAMP:20180918T115204Z
CREATED:20180822T062333Z
LAST-MODIFIED:20180918T115204Z
UID:2451-1540828800-1540836000@alop.uni-trier.de
SUMMARY:ALOP Colloquium with Arie M.C.A. Koster
DESCRIPTION:On Monday\, October 29\, 2018 at 16:00 c.t. Prof. Dr. Ir. Arie M.C. A. Koster  of RWTH Aachen will present his recent work entitled \nRobust Combinatorial Optimization – New Problems and Solutions \nAbstract: \nThe growing need to deal with uncertainties in optimization processes has lead to many new research directions. In robust optimization\, an uncertainty set has to be defined containing all scenarios to be considered. Availability of historical data often suggests the use of a discrete or polyhedral uncertainty set. By this\, new combinatorial optimization problems are evolved. \nIn this talk\, we discuss a few examples of novel combinatorial optimization problems inspired by uncertainties in network design and production planning. Further\, this talk should motivate research on the additional complexity introduced by uncertainties. \n  \nThe presentation will take place in HS 9. \nPlease join us for coffee at 15:45 in E10.
URL:https://alop.uni-trier.de/event/alop-colloquium-with-arie-m-c-a-koster/
LOCATION:Trier University E Building\, Universitätsring 15\, Trier\, 54296\, Germany
CATEGORIES:Colloquium
ORGANIZER;CN="RTG ALOP at Trier University":MAILTO:ALOP@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20181126T160000
DTEND;TZID=Europe/Berlin:20181126T180000
DTSTAMP:20181113T084204Z
CREATED:20181113T084204Z
LAST-MODIFIED:20181113T084204Z
UID:2605-1543248000-1543255200@alop.uni-trier.de
SUMMARY:ALOP Colloquium with Caroline Geiersbach
DESCRIPTION:On Monday\, November 26\, 2018 at 16:00 c.t.  Caroline Geiersbach of Universität Wien will present her recent work entitled \n  \nStochastic Approximation for Shape Optimization \n  \n  \nThe presentation will take place in HS 9. \nPlease join us for coffee at 15:45 in E10.
URL:https://alop.uni-trier.de/event/alop-colloquium-with-caroline-geiersbach/
LOCATION:Trier University E Building\, Universitätsring 15\, Trier\, 54296\, Germany
CATEGORIES:Colloquium
ORGANIZER;CN="RTG ALOP at Trier University":MAILTO:ALOP@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20181203T160000
DTEND;TZID=Europe/Berlin:20181203T180000
DTSTAMP:20181115T145928Z
CREATED:20180822T062947Z
LAST-MODIFIED:20181115T145928Z
UID:2456-1543852800-1543860000@alop.uni-trier.de
SUMMARY:ALOP Colloquium with Frank Vallentin
DESCRIPTION:On Monday\, December 3\, 2018 at 16:00 c.t. Prof. Dr. Frank Vallentin of Universität Köln will present his recent work entitled “Chromatic numbers of geometric graphs” \n\nAbstract: \nA classical problem in discrete geometry (due to Hadwiger and Nelson) is to find the minimal number of colors one needs to color all points in the Euclidean plane so that no two points which are distance 1 apart receive the same color. Similar geometric coloring problems can be posed in the context of the hyperbolic plane\, n-dimensional Euclidean spaces\, n-dimensional spheres\, or coloring the Voronoi tessellation of n-dimensional lattices. In this talk I will present a theoretical framework in which all these geometric coloring problems (assuming that the color classes are measurable sets) can be conveniently studied with the help of harmonic analysis and convex optimization. \n\nThe presentation will take place in HS 9. \nPlease join us for coffee at 15:45 in E10. \n\n  \n 
URL:https://alop.uni-trier.de/event/alop-colloquium-with-frank-vallentin-2/
LOCATION:Trier University E Building\, Universitätsring 15\, Trier\, 54296\, Germany
CATEGORIES:Colloquium
ORGANIZER;CN="RTG ALOP at Trier University":MAILTO:ALOP@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20181206T160000
DTEND;TZID=Europe/Berlin:20181206T180000
DTSTAMP:20181112T092237Z
CREATED:20181017T105259Z
LAST-MODIFIED:20181112T092237Z
UID:2586-1544112000-1544119200@alop.uni-trier.de
SUMMARY:ALOP Colloquium with Ingenuin Gasser
DESCRIPTION:On Thursday\, December 6\, 2018 at 16:00 c.t.  Prof. Gasser of Universität Hamburg will present his recent work entitled  \n  \nModelling\, simulation and optimisation of power plants based on renewable energies \n  \nAbstract: \nIn this seminar we discuss the fluid dynamics of  parabolic trough\, solar updraft towers\, energy towers and osmotic power stations.  The main issue is to discuss simple fluid dynamic models which on one hand describe the main features of the mentioned applications and on the other allow for robust and fast numerical simulations and optimization.  \nThis is used for different types of power plants based on renewable energy. In all cases we are able to model\, simulate and optimize both in the planning and in the operational phase. \n  \nThe presentation will take place in HS 9. \nPlease join us for coffee at 15:45 in E10.
URL:https://alop.uni-trier.de/event/alop-colloquium-with-ingenuin-gasser-of-universitat-hamburg/
CATEGORIES:Colloquium
ORGANIZER;CN="RTG ALOP at Trier University":MAILTO:ALOP@uni-trier.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20190128T160000
DTEND;TZID=Europe/Berlin:20190128T180000
DTSTAMP:20181217T140622Z
CREATED:20181214T103232Z
LAST-MODIFIED:20181217T140622Z
UID:2628-1548691200-1548698400@alop.uni-trier.de
SUMMARY:ALOP Colloquium with Martin Gugat\, FAU Erlangen
DESCRIPTION:On Monday\, January 28\, 2019 at 16:00 c.t.  Prof. Dr. Martin Gugat of FAU Erlangen will present his recent work entitled \n  \nOn the limits of boundary stabilizability for networks of strings. \n  \nAbstract: \nAn example by Bastin and Coron illustrates that theboundary stabilization of 1-d hyperbolic systemswith certain source terms is only possible if the lengthof the space interval is sufficiently small. We show that simlar phenomena also occur fornetworks of vibrating strings that are governedby the wave equation with a certain source term.It turns out that for a tree of strings withNeumann velocity feedback control at some boundary  nodesfor sufficiently large lengths of the strings\,boundary feedback stabilization is not possible.However\, if the number of strings in the tree is sufficiently large\, also for arbitrarily short strings for certainparameters in the source term stabilization is not possible. \n  \nThe presentation will take place in HS 9. \nPlease join us for coffee at 15:45 in E10.
URL:https://alop.uni-trier.de/event/colloquium-with-martin-gugat-fau-erlangen/
LOCATION:Trier University\, E Building\, Universitätsring 15\, Trier\, Germany
CATEGORIES:Colloquium
ORGANIZER;CN="RTG ALOP at Trier University":MAILTO:ALOP@uni-trier.de
END:VEVENT
END:VCALENDAR