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January 2018

ALOP-Colloquium with Prof. Andrea Walther

January 22 / 16:00 - 18:00
Trier University E Building, Universitätsring 15
Trier, 54296 Germany
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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:Recent progress in the optimization of piecewise smooth functionsIn a previous paper, we derived first and second order convexity conditions for a large class  of piecewise smooth functions.In 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.…

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February 2018

ALOP- Colloquium with Prof. Fredi Troeltzsch

February 6 / 12:00
Trier University E Building, Universitätsring 15
Trier, 54296 Germany
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On Tuesday, February 6, 2018, at 12:00  Prof. Fredi Tröltzsch of TU Berlin will present his recent work entitled Optimal and Feedback Control of some Reaction-Diffusion EquationsThe 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…

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ALOP-Colloquium with Prof. Dr. Geovani Grapiglia

February 26 / 16:00 - 18:00
Trier University, E Building, Universitätsring 15
Trier, Germany
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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 Improved Optimization Methods for Image Registration Problems   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…

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Writing Mathematical Texts in English

February 28 / 9:30 - 16:00

The Research Training Group on Algorithmic Optimization is offering a one-day workshop entitled Writing Mathematical Texts in English (instructor: Prof. Mirjam Dür) on Wednesday, February 28, 2018 from 9:30 - 16:00 in E 51.  

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March 2018

Retreat in Daun

March 1 - March 3

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.

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ALOP held its second retreat in Daun

March 1 - March 3

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. Furthermore, the RTG enjoyed a hike and an informative evening program which served to cultivate the pleasant team environment.

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Prof. Juan Vera and Olga Kuryatnikova of Tilburg University to visit in March

March 5 - March 6
Trier University, E Building, Universitätsring 15
Trier, Germany
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Prof. Juan Vera and Olga Kuryatnikova of Tilburg University are scheduled to visit the Research Training Group ALOP in March for research collaboration.   During their visit, they will speak on the following topics:   Copositive certificates of non-negativity (Prof. Juan Vera) Abstract: Sum-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…

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April 2018

ALOP-Colloquium with Prof. Michael Günther

April 16 / 16:00 - 18:00
Trier University E Building, Universitätsring 15
Trier, 54296 Germany
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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 Effiziente numerische Simulation multiphysikalischer Systeme Multiphysikalische 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.   The presentation…

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May 2018

ALOP-Colloquium with Kerstin Lux

May 7 / 16:00 - 18:00

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." Abstract: We are concerned with optimal control strategies subject to uncertain demands. They have a broad range of applications. Taking uncertainty into account becomes more and more important in many areas. In the context of supply chain management, a need for control strategies taking these uncertainties into account naturally…

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ALOP-Colloquium with Prof. Partha Lahiri

May 14 / 16:00 - 18:00
Trier University E Building, Universitätsring 15
Trier, 54296 Germany
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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." Abstract:  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…

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