UbiLoc: A System for Locating Mobile Devices Using Mobile Devices - Alcala, Felix; Beel, Joeran; Frenkel, Arne; Gipp, Bela; Luelf, Johannes; Hoepfner, Hagen (Proceedings of 1st Workshop on Positioning, Navigation and Communication 2004 (WPNC 04), 2004)

Warped MPDAE Models with Continuous Phase Conditions - Pulch, R. (IMACM, University of Wuppertal, 2004)
Keywords: imacm-preprint

What is the better signal space for discrete-time systems: { &}lt;prt{ &}gt;l_2(Z){ &}lt;/prt{ &}gt; or { &}lt;prt{ &}gt;l_2(N_0){ &}lt;/prt{ &}gt;? - Jacob, Birgit (SIAM J. Control Optim., 2004)

Parabolic Differential-Algebraic Models in Electrical Network Design - Ali, G.; Bartel, A.; G{\"{u}}nther, M. (IMACM, University of Wuppertal, 2004)
Keywords: imacm-preprint

Multidimensional Models for Analysing Frequency Modulated Signals - Pulch, R. (IMACM, University of Wuppertal, 2004)
Keywords: imacm-preprint

Multidimensional Models for Analysing Frequency Modulated Signals - Pulch, R. (IMACM, University of Wuppertal, 2004)

An MCDM approach to portfolio optimization - Ehrgott, Matthias; Klamroth, Kathrin; Schwehm, Christian (European Journal of Operational Research, 2004)

Modeling and Simulation for Thermal-Electric Coupling in an SOI-Circuit - Bartel, A.; Feldmann, U. (IMACM, University of Wuppertal, 2004)

A Charge Oriented Mixed Multirate Method for a special Class of Index-1 Network Equations in Chip Design - Striebel, M.; G{\"{u}}nther, M. (IMACM, University of Wuppertal, 2004)

A Charge Oriented Mixed Multirate Method for a special Class of Index-1 Network Equations in Chip Design - Striebel, M.; G{\"{u}}nther, M. (IMACM, University of Wuppertal, 2004)
Keywords: imacm-preprint

Admissibility of control and observation operators for semigroups: a survey - Jacob, Birgit; Partington, Jonathan R. (Current trends in operator theory and its applications, 2004)

Admissible control and observation operators for { &}lt;prt{ &}gt;V{ &}lt;/prt{ &}gt;olterra integral equations - Jacob, Birgit; Partington, Jonathan R. (J. Evol. Equ., 2004)

Algebraic properties of location problems with one circular barrier - Klamroth, Kathrin (European Journal of Operational Research, 2004)
Keywords: opt

Algebraic properties of location problems with one circular barrier - Klamroth, Kathrin (European Journal of Operational Research, 2004)

An MCDM approach to portfolio optimization - Ehrgott, Matthias; Klamroth, Kathrin; Schwehm, Christian (European Journal of Operational Research, 2004)
Keywords: opt

Counterexamples concerning observation operators for { &}lt;prt{ &}gt;C_0{ &}lt;/prt{ &}gt;-semigroups - Jacob, Birgit; Zwart, Hans (SIAM J. Control Optim., 2004)

Die Bedeutung von Abstandsma{\"{s}}en in der Data Envelopment Analysis - Stiglmayr, Michael ({Universit{\"{a}t Erlangen - N{\"{u}}rnberg, Institut f{\"{u}}r Angewandte Mathematik}, 2004)

Finite Difference Methods for Solving Warped Multirate Partial Differential Algebraic Equations - Pulch, R. (IMACM, University of Wuppertal, 2004)
Keywords: imacm-preprint

Finite Difference Methods for Solving Warped Multirate Partial Differential Algebraic Equations - Pulch, R. (IMACM, University of Wuppertal, 2004)

Index Analysis of Multirate Partial Differential-Algebraic Systems in RF-Circuits - Knorr, S.; G{\"{u}}nther, M. (IMACM, University of Wuppertal, 2004)
Keywords: imacm-preprint

Index Analysis of Multirate Partial Differential-Algebraic Systems in RF-Circuits - Knorr, S.; G{\"{u}}nther, M. (IMACM, University of Wuppertal, 2004)

Modeling and Simulation for Thermal-Electric Coupling in an SOI-Circuit - Bartel, A.; Feldmann, U. (IMACM, University of Wuppertal, 2004)
Keywords: imacm-preprint

Positive forms on { &}lt;prt{ &}gt;B{ &}lt;/prt{ &}gt;anach spaces - Farkas, B{\'{a}}lint; Matolcsi, M{\'{a}}t{\{ &}#039;e} (Acta Math. Hungar., 2003)

Weak admissibility does not imply admissibility for analytic semigroups - Zwart, Hans; Jacob, Birgit; Staffans, Olof (Systems Control Lett., 2003)
Optimization and control of distributed systems

Unbiased approximation in multicriteria optimization - Klamroth, Kathrin; Tind, J{ø}rgen; Wiecek, Margaret M. (Mathematical Methods of Operations Research, 2003)

Unbiased approximation in multicriteria optimization - Klamroth, Kathrin; Tind, J{ø}rgen; Wiecek, Margaret M. (Mathematical Methods of Operations Research, 2003)
Keywords: opt

Conditions for admissibility of observation operators and boundedness of { &}lt;prt{ &}gt;H{ &}lt;/prt{ &}gt;ankel operators - Jacob, Birgit; Partington, Jonathan R.; Pott, Sandra (Integral Equations Operator Theory, 2003)

Perturbations of Bi-Continuous Semigroups - Farkas, B{\'{a}}lint (Studia Math., 2003)

Ortung von Mobilen Geraeten Fuer Die Realisierung Lokationsbasierter Dienste - Alcala, Felix; Beel, Joeran; Frenkel, Arne; Gipp, Bela; Luelf, Johannes; Hoepfner, Hagen (Mobilitaet Und Informationssysteme - Workshop Des GI-Arbeitskreises { extquotedbl}Mobile Datenbanken Und Informationssysteme, 2003)

On the effect of small delays to the stability of feedback systems - B{\'{a}}tkai, Andr{\'{a}}s; Farkas, B{\'{a}}lint (Evolution equations: applications to physics, industry, life sciences and economics ({ &}lt;prt{ &}gt;L{ &}lt;/prt{ &}gt;evico { &}lt;prt{ &}gt;T{ &}lt;/prt{ &}gt;erme, 2000), 2003)

On the duals of { &}lt;prt{ &}gt;Lp{ &}lt;/prt{ &}gt; spaces with { &}lt;prt{ &}gt;0{ &}amp;lt;p{ &}amp;lt;1{ &}lt;/prt{ &}gt; - Farkas, B{\'{a}}lint (Acta Math. Hungar., 2003)

Multi Time Scale Differential Equations for Simulating Frequency Modulated Signals - Pulch, R. (IMACM, University of Wuppertal, 2003)

Multi Time Scale Differential Equations for Simulating Frequency Modulated Signals - Pulch, R. (IMACM, University of Wuppertal, 2003)
Keywords: imacm-preprint

An operator theoretical approach towards systems over the signal space { &}lt;prt{ &}gt;l_2(Z){ &}lt;/prt{ &}gt; - Jacob, Birgit (Integral Equations Operator Theory, 2003)

Norm-Based Approximation in Multicriteria Programming - Schandl, Bernd; Klamroth, Kathrin; Wiecek, Margaret M. (Computers and Mathematics with Applications, 2002)

The Weber problem - Drezner, Zvi; Klamroth, Kathrin; Sch{\"{o}}bel, Anita; Wesolowsky, George O. (Facility Location: Applications and Theory, 2002)

The Weber problem - Drezner, Zvi; Klamroth, Kathrin; Sch{\"{o}}bel, Anita; Wesolowsky, George O. (Facility Location: Applications and Theory, 2002)
Keywords: opt

Single-Facility Location Problems with Barriers - Klamroth, Kathrin ({Springer Series in Operations Research}, 2002)

Single-Facility Location Problems with Barriers - Klamroth, Kathrin (Springer Series in Operations Research, 2002)
Keywords: opt

Properties of the realization of inner functions - Jacob, Birgit; Zwart, Hans (Math. Control Signals Systems, 2002)

Norm-Based Approximation in Multicriteria Programming - Schandl, Bernd; Klamroth, Kathrin; Wiecek, Margaret M. (Computers and Mathematics with Applications, 2002)
Keywords: opt

Introducing oblique norms into multiple criteria programming - Schandl, Bernd; Klamroth, Kathrin; Wiecek, Margaret M. (Journal of Global Optimization, 2002)

Introducing oblique norms into multiple criteria programming - Schandl, Bernd; Klamroth, Kathrin; Wiecek, Margaret M. (Journal of Global Optimization, 2002)
Keywords: opt

Dominating sets for rectilinear center location problems with polyhedral barriers - Dearing, P. M.; Hamacher, Horst W.; Klamroth, Kathrin (Naval Research Logistics, 2002)

Dominating sets for rectilinear center location problems with polyhedral barriers - Dearing, P.M.; Hamacher, Horst W.; Klamroth, Kathrin (Naval Research Logistics, 2002)
Keywords: opt

Admissible and weakly admissible observation operators for the right shift semigroup - Jacob, Birgit; Partington, Jonathan R.; Pott, Sandra (Proc. Edinb. Math. Soc. (2), 2002)

A constrained approximation problem arising in parameter identification - Jacob, Birgit; Leblond, Juliette; Marmorat, Jean-Paul; Partington, Jonathan R. (Linear Algebra Appl., 2002)
Fourth special issue on linear systems and control

A bi-objective median location problem with a line barrier - Klamroth, Kathrin; Wiecek, Margaret M. (Operations Research, 2002)

A bi-objective median location problem with a line barrier - Klamroth, Kathrin; Wiecek, Margaret M. (Operations Research, 2002)
Keywords: opt

Norm-based approximation in convex multicriteria programming - Schandl, Bernd; Klamroth, Kathrin; Wiecek, Margaret M. (Operations Research Proceedings 2000, 2001)

Norm-based approximation in convex multicriteria programming - Schandl, Bernd; Klamroth, Kathrin; Wiecek, Margaret M. (Operations Research Proceedings 2000, 2001)
Keywords: opt

Zeros of { &}lt;prt{ &}gt;F{ &}lt;/prt{ &}gt;redholm operator valued { &}lt;prt{ &}gt;H^p{ &}lt;/prt{ &}gt;-functions - Jacob, Birgit (Math. Nachr., 2001)

On the boundedness and continuity of the spectral factorization mapping - Jacob, Birgit; Partington, Jonathan R. (SIAM J. Control Optim., 2001)

Planar location problems with line barriers - Klamroth, Kathrin (Optimization, 2001)
Keywords: opt

Planar location problems with line barriers - Klamroth, Kathrin (Optimization, 2001)

Norm-Based Approximation in Bicriteria Programming - Schandl, Bernd; Klamroth, Kathrin; Wiecek, Margaret M. (Computational Optimization and Applications, 2001)

The { &}lt;prt{ &}gt;W{ &}lt;/prt{ &}gt;eiss conjecture on admissibility of observation operators for contraction semigroups - Jacob, Birgit; Partington, Jonathan R. (Integral Equations Operator Theory, 2001)

Norm-Based Approximation in Bicriteria Programming - Schandl, Bernd; Klamroth, Kathrin; Wiecek, Margaret M. (Computational Optimization and Applications, 2001)
Keywords: opt

A time-dependent multiple criteria single-machine scheduling problem - Klamroth, Kathrin; Wiecek, Margaret M. (European Journal of Operational Research, 2001)
Keywords: opt

A reduction result for location problems with polyhedral barriers - Klamroth, Kathrin (European Journal of Operational Research, 2001)
Keywords: opt

Exact observability of diagonal systems with a one-dimensional output operator - Jacob, Birgit; Zwart, Hans (Int. J. Appl. Math. Comput. Sci., 2001)
Infinite-dimensional systems theory and operator theory (Perpignan, 2000)

A reduction result for location problems with polyhedral barriers - Klamroth, Kathrin (European Journal of Operational Research, 2001)

Exact controllability of { &}lt;prt{ &}gt;C_0{ &}lt;/prt{ &}gt;-groups with one-dimensional input operators - Jacob, Birgit; Zwart, Hans (Advances in mathematical systems theory, 2001)

A time-dependent multiple criteria single-machine scheduling problem - Klamroth, Kathrin; Wiecek, Margaret M. (European Journal of Operational Research, 2001)

Commutation properties of the form sum of positive, symmetric operators - Farkas, B{\'{a}}lint; Matolcsi, M{\'{a}}t{\{ &}#039;e} (Acta Sci. Math. (Szeged), 2001)

Der GSM-Schutzengel ({ extquotedbl}The GSM Guardian Angel{ extquotedbl}) - Gipp, Bela; Beel, Joeran; Petersen, Lars (Res. Proj. Natl. Compet. Found. Jugend Forscht Ger. Prem. Youth Sci. Compet. Httpwwwgsm-Schutzengelde Hambg. Ger., 2001)

Exact observability of diagonal systems with a finite-dimensional output operator - Jacob, Birgit; Zwart, Hans (Systems Control Lett., 2001)

Time-dependent capital budgeting with multiple criteria - Klamroth, Kathrin; Wiecek, Margaret M. (Research and Practice in Multiple Criteria Decision Making, 2000)
Keywords: opt

Using block norms in bicriteria optimization - Schandl, Bernd; Klamroth, Kathrin; Wiecek, Margaret M. (Research and Practice in Multiple Criteria Decision Making, 2000)

Using block norms in bicriteria optimization - Schandl, Bernd; Klamroth, Kathrin; Wiecek, Margaret M. (Research and Practice in Multiple Criteria Decision Making, 2000)
Keywords: opt

Time-dependent capital budgeting with multiple criteria - Klamroth, Kathrin; Wiecek, Margaret M. (Research and Practice in Multiple Criteria Decision Making, 2000)

Planar Weber location problems with barriers and block norms - Hamacher, Horst W.; Klamroth, Kathrin (Annals of Operations Research, 2000)

Planar Weber location problems with barriers and block norms - Hamacher, Horst W.; Klamroth, Kathrin (Annals of Operations Research, 2000)
Keywords: opt

On discrete-time linear systems with almost-periodic kernels - Jacob, Birgit; Partington, Jonathan R.; {\{ &}quot;U}nalm{ı}{{s}}, Banu (J. Math. Anal. Appl., 2000)

Graphs, closability, and causality of linear time-invariant discrete-time systems - Jacob, Birgit; Partington, Jonathan R. (Internat. J. Control, 2000)

Dynamic programming approaches to the multiple criteria knapsack problem - Klamroth, Kathrin; Wiecek, Margaret M. (Naval Research Logistics, 2000)

Dynamic programming approaches to the multiple criteria knapsack problem - Klamroth, Kathrin; Wiecek, Margaret M. (Naval Research Logistics, 2000)
Keywords: opt

Corrections to: ``{ &}lt;prt{ &}gt;A{ &}lt;/prt{ &}gt; sufficient condition for exact observability of spectral systems{ &}amp;quot; [{ &}lt;prt{ &}gt;K{ &}lt;/prt{ &}gt;yungpook { &}lt;prt{ &}gt;M{ &}lt;/prt{ &}gt;ath. { &}lt;prt{ &}gt;J{ &}lt;/prt{ &}gt;. { &}lt;prt{ &}gt;35{ &}lt;/prt{ &}gt; (1996), no. 3, { &}lt;prt{ &}gt;S{ &}lt;/prt{ &}gt;pecial { &}lt;prt{ &}gt;I{ &}lt;/prt{ &}gt;ssue, 427–434; { &}lt;prt{ &}gt;MR{ &}lt;/prt{ &}gt;1677625 (2000a:93019)] by { &}lt;prt{ &}gt;S{ &}lt;/prt{ &}gt;. { &}lt;prt{ &}gt;K{ &}lt;/prt{ &}gt;. { &}lt;prt{ &}gt;C{ &}lt;/prt{ &}gt;hang and { &}lt;prt{ &}gt;S{ &}lt;/prt{ &}gt;. { &}lt;prt{ &}gt;M{ &}lt;/prt{ &}gt;. { &}lt;prt{ &}gt;H{ &}lt;/prt{ &}gt;wang - Jacob, Birgit (Kyungpook Math. J., 2000)

Linear quadratic optimal control of time-varying systems with indefinite costs on { &}lt;prt{ &}gt;H{ &}lt;/prt{ &}gt;ilbert spaces - Jacob, Birgit (Math. Control Signals Systems, 1999)

Equivalent conditions for stabilizability of infinite-dimensional systems with admissible control operators - Zwart, Hans; Jacob, Birgit (SIAM J. Control Optim., 1999)

Der High-Tech Bernhardiner - Ein Rettungssystem Fuer Lawinenopfer ({ extquotedbl}The High-Tech St. Bernhard - an Avalanche Rescue System{ extquotedbl}) - Gipp, Bela; Stiller, Jan-Olaf (Res. Proj. State-Wide Compet. Found. Jugend Forscht Ger. Prem. Youth Sci. Compet. Httpwwwgsm-Schutzengeldehightec-Indexshtml Hambg. Ger., 1999)

Continuity of the spectral factorization on a vertical strip - Jacob, Birgit; Winkin, Joseph; Zwart, Hans (Systems Control Lett., 1999)

A formula for the stability radius of time-varying systems - Jacob, Birgit (J. Differential Equations, 1998)

Verlaengerung Der Standby-Zeit von Mobiltelefonen Mittels Intelligenter Integration Eines Zusatzempfaengers Im 433 MHz-Bereich ({ extquotedbl}Extending Cell Phone Standby Time by Intelligent Integration of an Additional Receiver in the 433 MHz-Field{ extquotedbl}) - Gipp, Bela; Stiller, Jan-Olaf (Res. Proj. State-Wide Compet. Found. Jugend Forscht Ger. Prem. Youth Sci. Compet. Hambg. Ger., 1998)

Corrections and extensions of: ``{ &}lt;prt{ &}gt;O{ &}lt;/prt{ &}gt;ptimal control of linear systems with almost periodic inputs{ &}amp;quot; [{ &}lt;prt{ &}gt;SIAM{ &}lt;/prt{ &}gt; { &}lt;prt{ &}gt;J{ &}lt;/prt{ &}gt;. { &}lt;prt{ &}gt;C{ &}lt;/prt{ &}gt;ontrol { &}lt;prt{ &}gt;O{ &}lt;/prt{ &}gt;ptim. { &}lt;prt{ &}gt;25{ &}lt;/prt{ &}gt; (1987), no. 4, 1007–1019; { &}lt;prt{ &}gt;MR{ &}lt;/prt{ &}gt;0893995 (88i:93042)] by { &}lt;prt{ &}gt;G{ &}lt;/prt{ &}gt;. { &}lt;prt{ &}gt;D{ &}lt;/prt{ &}gt;a { &}lt;prt{ &}gt;P{ &}lt;/prt{ &}gt;rato and { &}lt;prt{ &}gt;A{ &}lt;/prt{ &}gt;. { &}lt;prt{ &}gt;I{ &}lt;/prt{ &}gt;chikawa - Jacob, Birgit; Larsen, Mikael; Zwart, Hans (SIAM J. Control Optim., 1998)

A note on the equivalence of balance points and Pareto solutions in multiple objective programming - Ehrgott, Matthias; Hamacher, Horst W.; Klamroth, Kathrin; Nickel, Stefan; Sch{\"{o}}bel, Anita; Wiecek, Margaret M. (Journal of Optimization Theory and Applications, 1997)

Nonconnected efficiency graphs in multiple criteria combinatorial optimization - Ehrgott, Matthias; Klamroth, Kathrin (Advances in Multiple Objective and Goal Programming, 1997)

A note on the equivalence of balance points and Pareto solutions in multiple objective programming - Ehrgott, Matthias; Hamacher, Horst W.; Klamroth, Kathrin; Nickel, Stefan; Sch{\"{o}}bel, Anita; Wiecek, Margaret M. (Journal of Optimization Theory and Applications, 1997)
Keywords: opt

The Ramsey number r(K1,3C{ _}4,K{ _}4) - Klamroth, Kathrin; Mengersen, Ingrid (Utilitas Mathematica, 1997)

Glasfaserbasierte Analoge Bilduebertragung ({ extquotedbl}Fiber Optic-Based Analog Image Transfer{ extquotedbl}) - Gipp, Bela; Stiller, Jan-Olaf (Res. Proj. Natl. Compet. Found. Jugend Forscht Ger. Prem. Youth Sci. Compet. Hambg. Ger., 1997)

Connectedness of efficient solutions in multiple criteria combinatorial optimization - Ehrgott, Matthias; Klamroth, Kathrin (European Journal of Operational Research, 1997)

Connectedness of efficient solutions in multiple criteria combinatorial optimization - Ehrgott, Matthias; Klamroth, Kathrin (European Journal of Operational Research, 1997)
Keywords: opt

Nonconnected efficiency graphs in multiple criteria combinatorial optimization - Ehrgott, Matthias; Klamroth, Kathrin (Advances in Multiple Objective and Goal Programming, 1997)
Keywords: opt

Destabilization of infinite-dimensional time-varying systems via dynamical output feedback - Jacob, Birgit (Recent developments in operator theory and its applications ({ &}lt;prt{ &}gt;W{ &}lt;/prt{ &}gt;innipeg, { &}lt;prt{ &}gt;MB{ &}lt;/prt{ &}gt;, 1994), 1996)

Ramsey numbers of K{ _}3 versus (p,q)-graphs - Klamroth, Kathrin; Mengersen, Ingrid (Ars Combinatoria, 1996)

Three color Ramsey numbers for small graphs - Arste, J.; Klamroth, Kathrin; Mengersen, Ingrid (Utilitas Mathematica, 1996)

Infinite-dimensional time-varying systems with nonlinear output feedback - Jacob, Birgit; Drăgan, Vasile; Pritchard, Anthony J. (Integral Equations Operator Theory, 1995)

Linear quadratic optimal control of time-varying systems with indefinite costs on { &}lt;prt{ &}gt;H{ &}lt;/prt{ &}gt;ilbert spaces: the finite horizon problem - Jacob, Birgit (J. Math. Systems Estim. Control, 1995)

Ramsey-Zahlen f{\"{u}}r Mengen von Graphen - Klamroth, Kathrin ({Technical University of Braunschweig}, 1994)