@inproceedings{Socolowsky1995, author = {Socolowsky, J{\"u}rgen}, title = {Numerical analysis of viscous flows with free boundaries}, series = {In: Simulation of materials processing : theory, methods and applications ; proceedings of the Fifth International Conference on Numerical Methods in Industrial Forming Processes, NUMIFORM '95, Ithaca, New York, USA, 18 - 21 June 1995 / ed. by Shan-Fu Shen .... - Rotterdam [u.a.] : Balkema, 1995. - ISBN: 90-5410-553-4}, booktitle = {In: Simulation of materials processing : theory, methods and applications ; proceedings of the Fifth International Conference on Numerical Methods in Industrial Forming Processes, NUMIFORM '95, Ithaca, New York, USA, 18 - 21 June 1995 / ed. by Shan-Fu Shen .... - Rotterdam [u.a.] : Balkema, 1995. - ISBN: 90-5410-553-4}, pages = {1071 -- 1076}, year = {1995}, language = {en} } @article{Socolowsky1994, author = {Socolowsky, J{\"u}rgen}, title = {Existence and uniqueness of the solution to a free boundary-value problem with thermocapillary convection in an unbounded domain}, series = {In: Acta Applicandae Mathematica November 37 (1994)1-2, pp 181-194}, journal = {In: Acta Applicandae Mathematica November 37 (1994)1-2, pp 181-194}, issn = {0167-8019 (print)}, doi = {10.1007/BF00995140}, pages = {181 -- 194}, year = {1994}, abstract = {A free boundary-value problem for a nonisothermal flow of two heavy viscous incompressible capillary liquids descibing a slot coating process is mathematically studied. The problem is stationary and two-dimensional and the Boussinesq approximation for the Navier-Stokes equations is used. The existence and uniqueness of a weak solution is proved in weighted Holder spaces for small data.}, language = {en} } @article{SocolowskyWolff1994, author = {Socolowsky, J{\"u}rgen and Wolff, M.}, title = {On some model problems in flow problems with contact angles}, series = {In: Zeitschrift f{\"u}r angewandte Mathematik und Mechanik : ZAMM = Journal of applied mathematics and mechanics 74 (1994) 11, 557-558}, journal = {In: Zeitschrift f{\"u}r angewandte Mathematik und Mechanik : ZAMM = Journal of applied mathematics and mechanics 74 (1994) 11, 557-558}, doi = {10.1002/zamm.19940741113}, pages = {557 -- 558}, year = {1994}, language = {en} } @article{Socolowsky1993, author = {Socolowsky, J{\"u}rgen}, title = {The solvability of a free boundary problem for the stationary Navier-Stokes equations with a dynamic contact line}, series = {In: Nonlinear Analysis: Theory, Methods \& Applications 21 (1993) 10, 763-784}, journal = {In: Nonlinear Analysis: Theory, Methods \& Applications 21 (1993) 10, 763-784}, pages = {763 -- 784}, year = {1993}, language = {en} } @article{FranzConway2008, author = {Franz, Robert U. and Conway, Dan G.}, title = {Real world experience in international teamwork using cross cultural collaborative learning}, series = {In: Enterprise resource planning : teaching and research, SAP / F. Akaiwa and A.K. Soni (Eds.) Indiana University. - Bloomington : Indiana University, 2008. - (Innovation monograph ; 3)}, journal = {In: Enterprise resource planning : teaching and research, SAP / F. Akaiwa and A.K. Soni (Eds.) Indiana University. - Bloomington : Indiana University, 2008. - (Innovation monograph ; 3)}, pages = {21 -- 27}, year = {2008}, language = {en} } @inproceedings{FranzConway2006, author = {Franz, Robert U. and Conway, Dan}, title = {Cross cultural collaboration: global disruption for zwo}, series = {In: Enterprise resource planning : teaching and research ; SAP University Alliances Curriculum Congress (2005 : Kelley School of Business) / contributors Ashok K. Soni ... - Indiana : SAP/Kelley School of Business, 2006. - (Innovation monograph ; 2)}, booktitle = {In: Enterprise resource planning : teaching and research ; SAP University Alliances Curriculum Congress (2005 : Kelley School of Business) / contributors Ashok K. Soni ... - Indiana : SAP/Kelley School of Business, 2006. - (Innovation monograph ; 2)}, pages = {7 -- 12}, year = {2006}, language = {en} } @inproceedings{HankeNeitzelFranz2014, author = {Hanke, Stefan and Neitzel, Erik and Franz, Robert U.}, title = {Mobile learning application development for multiple operating systems}, series = {In: Tagungsband / 15. Nachwuchswissenschaftlerkonferenz : [24. April 2014, Magdeburg] / Jan Mugele ... (Hrsg.). - Magdeburg : Meine, 2014. - ISBN 978-3-941305-45-8}, booktitle = {In: Tagungsband / 15. Nachwuchswissenschaftlerkonferenz : [24. April 2014, Magdeburg] / Jan Mugele ... (Hrsg.). - Magdeburg : Meine, 2014. - ISBN 978-3-941305-45-8}, pages = {363 -- 366}, year = {2014}, language = {en} } @article{NeitzelFranz2012, author = {Neitzel, E. and Franz, Robert U.}, title = {Sicherheit von ERP-Konfigurationen am Beispiel f{\"o}derierter Gesch{\"a}ftsprozesse}, series = {In: ERP-Management 8 (2012) 4, 47-49}, journal = {In: ERP-Management 8 (2012) 4, 47-49}, pages = {47 -- 49}, year = {2012}, language = {de} } @inproceedings{OPUS4-905, title = {In-memory-Computing - die R{\"u}ckkehr der Unternehmenssteuerung in Echtzeit? : Tagungsband zum 11. Berlin-Brandenburger SAP-Forum der Fachhochschule Brandenburg am 31.05.2012}, editor = {Johannsen, Andreas and Franz, Robert U. and Heinrich, Hartmut}, publisher = {Shaker}, address = {Aachen}, isbn = {978-3-8440-1036-7}, pages = {91}, year = {2012}, subject = {Unternehmensplanung}, language = {de} } @inproceedings{SchmidtFranz2011, author = {Schmidt, Benjamin and Franz, Robert U.}, title = {Entwicklungen eines mobilen Managementcockpits mit BI-Werkzeugen f{\"u}r Unternehmensplanspiele am Beispiel iDecor}, series = {In: Mobile Prozesse im ERP-Umfeld - Realit{\"a}t oder Vision? : Tagungsband zum 10. Berlin-Brandenburger SAP-Forum der Fachhochschule Brandenburg am 26.05.2011 / Hartmut Heinrich ... (Hrsg.). Aachen : Shaker, 2011. - ISBN 978-3-8440-0102-0}, booktitle = {In: Mobile Prozesse im ERP-Umfeld - Realit{\"a}t oder Vision? : Tagungsband zum 10. Berlin-Brandenburger SAP-Forum der Fachhochschule Brandenburg am 26.05.2011 / Hartmut Heinrich ... (Hrsg.). Aachen : Shaker, 2011. - ISBN 978-3-8440-0102-0}, pages = {107 -- 115}, year = {2011}, language = {de} } @inproceedings{OPUS4-903, title = {Mobile Prozesse im ERP-Umfeld - Realit{\"a}t oder Vision? : Tagungsband zum 10. Berlin-Brandenburger SAP-Forum der Fachhochschule Brandenburg am 26.05.2011}, editor = {Franz, Robert U. and Heinrich, Hartmut and Johannsen, Andreas and Bohne, Dennis}, publisher = {Shaker}, address = {Aachen}, isbn = {978-3-8440-0102-0}, pages = {115 S.}, year = {2011}, subject = {Enterprise-Resource-Planning}, language = {de} } @article{HerzogGertzFranz2009, author = {Herzog, S. and Gertz, V. and Franz, Robert U.}, title = {Service Model Management - Vorgehensmodell und IT-Implementierung}, series = {In: ERP-Management 5 (2009) 3, 37-39}, journal = {In: ERP-Management 5 (2009) 3, 37-39}, pages = {37 -- 39}, year = {2009}, language = {de} } @inproceedings{OPUS4-901, title = {Software as a service - ein Modell f{\"u}r die Zukunft? : Tagungsband zum 8. Berlin-Brandenburger SAP-Forum der Fachhochschule Brandenburg am 18. Juni 2009}, editor = {Franz, Robert U. and Heinrich, Hartmut and Johannsen, Andreas}, publisher = {Shaker}, address = {Aachen}, isbn = {978-3-8322-8238-7}, pages = {81 S.}, year = {2009}, subject = {Klein- und Mittelbetrieb}, language = {de} } @article{KausmannSeulenFranz2008, author = {Kausmann, K. and Seulen, F. and Franz, Robert U.}, title = {Identity \& Access Management}, series = {In: ERP-Management 4 (2008) 4, 28-31}, journal = {In: ERP-Management 4 (2008) 4, 28-31}, pages = {28 -- 31}, year = {2008}, language = {de} } @inproceedings{FranzConway2008, author = {Franz, Robert U. and Conway, Daniel G.}, title = {Cross-cultural collaborative Learning: Ein Konzept zur internationalen und hochschul{\"u}bergreifenden Ausbildung von Studenten}, series = {In: Business intelligence - ein Mehrwert f{\"u}r das Unternehmen? : Tagungsband zum 7. Berlin-Brandenburger SAP-Forum der Fachhochschule Brandenburg am 12. Juni 2008 / Robert U. Franz ... (Hrsg.). - Aachen : Shaker, 2008. - (Berichte aus der Wirtschaftsinformatik). - ISBN 978-3-8322-7277-7}, booktitle = {In: Business intelligence - ein Mehrwert f{\"u}r das Unternehmen? : Tagungsband zum 7. Berlin-Brandenburger SAP-Forum der Fachhochschule Brandenburg am 12. Juni 2008 / Robert U. Franz ... (Hrsg.). - Aachen : Shaker, 2008. - (Berichte aus der Wirtschaftsinformatik). - ISBN 978-3-8322-7277-7}, pages = {143 -- 157}, year = {2008}, language = {de} } @inproceedings{Franz2008, author = {Franz, Robert U.}, title = {Zusammenarbeit Unternehmen und Hochschule als Erfolgsfaktor f{\"u}r die Wissenschaft und die regionale Wirtschaft}, series = {In: Business intelligence - ein Mehrwert f{\"u}r das Unternehmen? : Tagungsband zum 7. Berlin-Brandenburger SAP-Forum der Fachhochschule Brandenburg am 12. Juni 2008 / Robert U. Franz ... (Hrsg.). - Aachen : Shaker, 2008. - (Berichte aus der Wirtschaftsinformatik). - ISBN 978-3-8322-7277-7}, booktitle = {In: Business intelligence - ein Mehrwert f{\"u}r das Unternehmen? : Tagungsband zum 7. Berlin-Brandenburger SAP-Forum der Fachhochschule Brandenburg am 12. Juni 2008 / Robert U. Franz ... (Hrsg.). - Aachen : Shaker, 2008. - (Berichte aus der Wirtschaftsinformatik). - ISBN 978-3-8322-7277-7}, pages = {103 -- 104}, year = {2008}, language = {de} } @article{WeiseFranz2008, author = {Weise, T. and Franz, Robert U.}, title = {Integration geographischer Informationen in eine ERP-L{\"o}sung zur Routenplanung in der Abfallwirtschaft}, series = {In: ERP-Management 4 (2008) 1, 43-45}, journal = {In: ERP-Management 4 (2008) 1, 43-45}, pages = {43 -- 45}, year = {2008}, language = {de} } @inproceedings{OPUS4-896, title = {Serviceorientierte Architekturen - von der Strategie zum Projekt : Tagungsband zum 6. Berlin-Brandenburger SAP-Forum der Fachhochschule Brandenburg am 14. Juni 2007}, editor = {Franz, Robert U. and Heinrich, Hartmut and Johannsen, Andreas}, publisher = {Shaker}, address = {Aachen}, isbn = {978-3-8322-6269-3}, pages = {115}, year = {2007}, subject = {Klein- und Mittelbetrieb}, language = {de} } @article{FranzWill2007, author = {Franz, Robert U. and Will, L. S.}, title = {Security Management - Intrusion Detection}, series = {In: Der EDV-Leiter (2007) 5, 34-37}, journal = {In: Der EDV-Leiter (2007) 5, 34-37}, pages = {34 -- 37}, year = {2007}, language = {de} } @inproceedings{Franz2006, author = {Franz, Robert U.}, title = {RFID-Technologie und SAP Mobile Infrastructure: Prozessoptimierung in der Logistik durch die Online-Verbuchung von Warenbewegungen im SAP R/3}, series = {In: Wirtschaftsinformatik-Ausbildung mit SAP-Software : Reader zum Track der Multikonferenz Wirtschaftsinformatik 2006 in Passau / Helmut Krcmar ... (Hrsg.). - Lohmar : Eul, 2006. - ISBN 978-3-89936-514-6}, booktitle = {In: Wirtschaftsinformatik-Ausbildung mit SAP-Software : Reader zum Track der Multikonferenz Wirtschaftsinformatik 2006 in Passau / Helmut Krcmar ... (Hrsg.). - Lohmar : Eul, 2006. - ISBN 978-3-89936-514-6}, pages = {23 -- 39}, year = {2006}, language = {de} } @article{FranzConway2006, author = {Franz, Robert U. and Conway, D. G.}, title = {The transforming world of business -organizing global business processes: Tomorrow's experts}, series = {In: SAP Info 140 (2006),70-71}, journal = {In: SAP Info 140 (2006),70-71}, pages = {70 -- 71}, year = {2006}, language = {en} } @inproceedings{FranzRoschkeWill2006, author = {Franz, Robert U. and Roschke, S. and Will, L.}, title = {Security Management - Herausforderung f{\"u}r Unternehmen, Organisationsgestaltung und Management}, series = {In: Moderne IT-Architekturen - eine Herausforderung f{\"u}r die Sicherheit? : Tagungsband zum 5. Berlin-Brandenburger SAP-Forum der Fachhochschule Brandenburg am 18. Mai 2006 / Robert U. Franz/Hartmut Heinrich (Hrsg.). - Aachen : Shaker, 2006. - (Berichte aus der Wirtschaftsinformatik). - ISBN 3-8322-5103-0}, booktitle = {In: Moderne IT-Architekturen - eine Herausforderung f{\"u}r die Sicherheit? : Tagungsband zum 5. Berlin-Brandenburger SAP-Forum der Fachhochschule Brandenburg am 18. Mai 2006 / Robert U. Franz/Hartmut Heinrich (Hrsg.). - Aachen : Shaker, 2006. - (Berichte aus der Wirtschaftsinformatik). - ISBN 3-8322-5103-0}, pages = {141 -- 154}, year = {2006}, language = {de} } @inproceedings{FranzConway2006, author = {Franz, Robert U. and Conway, D. G.}, title = {Globalisierung und 3c-Learning - Gesch{\"a}ftsprozessmanagement am Beispiel einer internationalen Firmenfusion}, series = {In: Moderne IT-Architekturen - eine Herausforderung f{\"u}r die Sicherheit? : Tagungsband zum 5. Berlin-Brandenburger SAP-Forum der Fachhochschule Brandenburg am 18. Mai 2006 / Robert U. Franz/Hartmut Heinrich (Hrsg.). - Aachen : Shaker, 2006. - (Berichte aus der Wirtschaftsinformatik). - ISBN 3-8322-5103-0}, booktitle = {In: Moderne IT-Architekturen - eine Herausforderung f{\"u}r die Sicherheit? : Tagungsband zum 5. Berlin-Brandenburger SAP-Forum der Fachhochschule Brandenburg am 18. Mai 2006 / Robert U. Franz/Hartmut Heinrich (Hrsg.). - Aachen : Shaker, 2006. - (Berichte aus der Wirtschaftsinformatik). - ISBN 3-8322-5103-0}, pages = {11 -- 20}, year = {2006}, language = {de} } @inproceedings{OPUS4-890, title = {Moderne IT-Architekturen - eine Herausforderung f{\"u}r die Sicherheit? : Tagungsband zum 5. Berlin-Brandenburger SAP-Forum der Fachhochschule Brandenburg am 18. Mai 2006}, editor = {Franz, Robert U. and Heinrich, Hartmut}, publisher = {Shaker}, address = {Aachen}, isbn = {3-8322-5103-0}, pages = {154}, year = {2006}, subject = {Betriebliches Informationssystem}, language = {de} } @article{FranzHoepfner2006, author = {Franz, Robert U. and H{\"o}pfner, M.}, title = {Einsatz der RFID-Technologie in der Logistik zur Optimierung der Warenausgangskontrolle}, series = {In: PPS Management (2006) 1, 27-29}, journal = {In: PPS Management (2006) 1, 27-29}, pages = {27 -- 29}, year = {2006}, language = {de} } @article{FranzOede2005, author = {Franz, Robert U. and Oede, Sebastian}, title = {Dokumenten-Management in der Immobilienbranche am Beispiel der elektronischen Mieterakte}, series = {In: ERP Management (2005) 4, 41-43}, journal = {In: ERP Management (2005) 4, 41-43}, pages = {41 -- 43}, year = {2005}, language = {de} } @inproceedings{HoepfnerFranz2005, author = {H{\"o}pfner, Marcus and Franz, Robert U.}, title = {RFID-Technologie mit Anbindung an ein SAP R/3 System zur Unterst{\"u}tzung von Warenbewegungen in Unternehmen}, series = {In: Mobile und integrierte Gesch{\"a}ftsprozesse im SAP-Umfeld : Tagungsband zum 4. Berlin-Brandenburger SAP-Forum der Fachhochschule Brandenburg am 02. Juni 2005 / Robert U. Franz/Hartmut Heinrich (Hrsg.). - Aachen : Shaker, 2005. - (Berichte aus der Wirtschaftsinformatik). - ISBN 3-8322-4053-5}, booktitle = {In: Mobile und integrierte Gesch{\"a}ftsprozesse im SAP-Umfeld : Tagungsband zum 4. Berlin-Brandenburger SAP-Forum der Fachhochschule Brandenburg am 02. Juni 2005 / Robert U. Franz/Hartmut Heinrich (Hrsg.). - Aachen : Shaker, 2005. - (Berichte aus der Wirtschaftsinformatik). - ISBN 3-8322-4053-5}, pages = {111 ff}, year = {2005}, language = {de} } @inproceedings{HeinrichFranz2005, author = {Heinrich, Hartmut and Franz, Robert U.}, title = {ERP-Systeme in Forschung und Lehre an der Fachhochschule Brandenburg}, series = {In: Mobile und integrierte Gesch{\"a}ftsprozesse im SAP-Umfeld : Tagungsband zum 4. Berlin-Brandenburger SAP-Forum der Fachhochschule Brandenburg am 02. Juni 2005 / Robert U. Franz/Hartmut Heinrich (Hrsg.). - Aachen : Shaker, 2005. - (Berichte aus der Wirtschaftsinformatik). - ISBN 3-8322-4053-5}, booktitle = {In: Mobile und integrierte Gesch{\"a}ftsprozesse im SAP-Umfeld : Tagungsband zum 4. Berlin-Brandenburger SAP-Forum der Fachhochschule Brandenburg am 02. Juni 2005 / Robert U. Franz/Hartmut Heinrich (Hrsg.). - Aachen : Shaker, 2005. - (Berichte aus der Wirtschaftsinformatik). - ISBN 3-8322-4053-5}, pages = {11 -- 17}, year = {2005}, language = {de} } @article{FranzAmmann2000, author = {Franz, Robert U. and Ammann, M.}, title = {Wissensvorsprung - Training, e-learning und Dokumentation}, series = {In: SAP info 69 (2000), 48-51}, journal = {In: SAP info 69 (2000), 48-51}, pages = {48 -- 51}, year = {2000}, language = {de} } @book{OPUS4-884, title = {Mobile und integrierte Gesch{\"a}ftsprozesse im SAP-Umfeld : Tagungsband zum 4. Berlin-Brandenburger SAP-Forum der Fachhochschule Brandenburg am 02. Juni 2005}, editor = {Franz, Robert U. and Heinrich, Hartmut}, publisher = {Shaker}, address = {Aachen}, isbn = {3-8322-4053-5}, pages = {119}, year = {2005}, subject = {Enterprise-Resource-Planning}, language = {de} } @book{Franz1996, author = {Franz, Robert U.}, title = {Reflexions-Anisotropie-Mikroskopie : eine Methode zur Abbildung von Oberfl{\"a}chenreaktionen am Beispiel der katalytischen CO-Oxidation auf Pt(110)}, publisher = {Wiss.-und Technik-Verl.}, address = {Berlin}, isbn = {3-928943-88-X}, pages = {108}, year = {1996}, subject = {Platin}, language = {de} } @article{SchiebelAhlertFranzetal.1996, author = {Schiebel, P. and Ahlert, D. and Franz, Robert U. and Hohlwein, D. and Prandl, W. and Siemensmeyer, K. and Wulf, K.}, title = {Partial conversion of neutron incoherent into coherent scattering by NH3 quantum rotators}, series = {In: Physica B: Condensed Matter 226 (1996) 1-3, pp 234-237}, journal = {In: Physica B: Condensed Matter 226 (1996) 1-3, pp 234-237}, doi = {10.1016/0921-4526(96)00312-2}, pages = {234 -- 237}, year = {1996}, abstract = {Neutron diffraction experiments on powders are used to investigate the quantum mechanical behaviour of uniaxial rotators, i.e. NH3-molecules in Ni(NH3)6(PF6)2, Co(NH3)6(PF6)2 and Ni(NH3)6I2. A diffuse temperature dependent component of the total scattering, modulated ∼ sin QrH-H/QrH-H, is observed at a temperature of ≃ 20 K and below. This observation is due to the fact, that on cooling the sample to kT ∼ B (rotational constant) the rotational ground state is strongly populated. The ground state of a uniaxial free rotator, however, is completely polarized. As a consequence the scattering of those NH3 groups being in the ground state becomes coherent and is observable in diffraction experiments.}, language = {en} } @article{HaasFranzRotermundetal.1996, author = {Haas, G. and Franz, Robert U. and Rotermund, H. H. and Tromp, R. M. and Ertl, G.}, title = {Imaging surface reactions with light}, series = {In: Surface Science Vol. 352-354 (1996), pp 1003-1006}, journal = {In: Surface Science Vol. 352-354 (1996), pp 1003-1006}, doi = {10.1016/0039-6028(95)01316-4}, pages = {1003 -- 1006}, year = {1996}, abstract = {Two new optical imaging methods with submonolayer surface sensitivity are applied together to investigate pattern formation of adsorbate concentrations on surfaces during heterogeneously catalysed reactions. Ellipso-microscopy for surface imaging (EMSI) is based on an ellipsometric effect, reflection anisotropy microscopy (RAM) on the polarising properties of surface anisotropies. For the CO oxidation reaction on a Pt(110) surface features like front propagation, target patterns and spiral waves are observed, similar as in prior investigations by photoemission electron microscopy (PEEM). By applying EMSI and RAM simultaneously and imaging the same spot of the surface, supplementary information is gained on the properties of the reaction diffusion fronts. When observing a reaction front by EMSI and RAM at temperatures between 330 and 420 K the image of the front in RAM trails behind its image in EMSI. EMSI seems to display changes in the coverage of adsorbates while RAM relates to variations in surface structure.}, language = {en} } @article{AhlertFranzHohlweinetal.1995, author = {Ahlert, D. and Franz, Robert U. and Hohlwein, D. and Prandl, W. and Schiebel, P. and Siemensmeyer, K.}, title = {Die partielle Konversion von inkoh{\"a}renter in koh{\"a}rente Streuung an Protonen : das Ausfrieren der Quanten-Spin-Fluktuationen beim freien NH3-Rotator in Ni(NH3)6(PF6)2}, series = {In: Zeitschrift f{\"u}r Kristallographie / Supplement issue No. 9 (1995) , p. 82}, journal = {In: Zeitschrift f{\"u}r Kristallographie / Supplement issue No. 9 (1995) , p. 82}, pages = {82}, year = {1995}, language = {de} } @article{RotermundHaasFranzetal.1995, author = {Rotermund, H. H. and Haas, G. and Franz, Robert U. and Tromp, R. M. and Ertl, G.}, title = {Imaging pattern formation: bridging the pressure gap}, series = {In: Applied Physics A 61 (1995) 6, pp 569-574}, journal = {In: Applied Physics A 61 (1995) 6, pp 569-574}, doi = {10.1007/BF01542865}, pages = {569 -- 574}, year = {1995}, abstract = {Two surface-sensitive optical imaging methods, Ellipso-Microscopy for surface Imaging (EMSI) and Reflection Anisotropy Microscopy (RAM) are introduced. They allow imaging of pattern formation on surfaces, e.g., due to submonolayer coverages of adsorbates, at any arbitrary pressure. In spatio-temporal pattern formation during heterogeneously catalysed reactions this bridges the 'pressure gap' between well-defined UHV experiments and 'real catalysis'. For the CO oxidation on Pt(110), the parameter space for pattern formation was extended up to 100 mbar, i.e., by 5 orders of magnitude compared to earlier investigations by Photo-Emission Electron Microscopy (PEEM) which had to be conducted below 10-3 mbar. With increasing pressure, the synchronisation mechanisms responsible for the observed pattern showed a gradual shift from reaction-diffusion to thermal-kinetic coupling unveiling previously unseen features of pattern formation in catalysis.}, language = {en} } @article{RotermundHaasFranzetal.1995, author = {Rotermund, H. H. and Haas, G. and Franz, Robert U. and Tromp, R. M. and Ertl, G.}, title = {Imaging Pattern Formation in Surface Reactions from Ultrahigh Vacuum up to Atmospheric Pressures}, series = {In: Science 270 (1995) 5236, pp. 608-610}, journal = {In: Science 270 (1995) 5236, pp. 608-610}, doi = {10.1126/science.270.5236.608}, pages = {608 -- 610}, year = {1995}, abstract = {Two optical methods that allow pattern formation to be investigated at an arbitrary pressure are here applied to image concentration patterns of adsorbed species associated with heterogeneous catalytic reactions. In contrast to most surface physical techniques, these methods are not restricted to high vacuum conditions and thus bridge the "pressure gap." With carbon monoxide oxidation on a (110) surface of platinum as an example, the coupling mechanisms responsible for spatiotemporal self-organization in surface reactions were followed from reaction-diffusion control to the thermokinetic region, associated with phenomena not previously observed in pattern formation.}, language = {en} } @article{VollmerMoellmann2014, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Physikalische Zauberei : die Kette im Ring}, series = {In: Physik in unserer Zeit 45 (2014) 1, 44-45}, journal = {In: Physik in unserer Zeit 45 (2014) 1, 44-45}, doi = {10.1002/piuz.201490004}, pages = {44 -- 45}, year = {2014}, abstract = {Ein einfacher physikalischer Zaubertrick besteht darin, eine Kette {\"u}ber den Handr{\"u}cken zu legen und danach von unten einen Ring {\"u}ber die Kette zu schieben. Der Ring kann entweder von der zweiten Hand oder der die Kette haltenden Hand gehalten werden. Er wird sodann losgelassen und soll (mit einem Knoten) in der Kette h{\"a}ngen bleiben.}, language = {de} } @article{VollmerMoellmann2014, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Das farbenpr{\"a}chtige Glitzern frischen Schnees}, series = {In: Physik in unserer Zeit 45 (2014) 2, 97-98}, journal = {In: Physik in unserer Zeit 45 (2014) 2, 97-98}, doi = {10.1002/piuz.201490031}, pages = {97 -- 98}, year = {2014}, abstract = {Regenb{\"o}gen, Halos, Koronen, Himmelsfarben - es gibt eine Vielzahl farbenpr{\"a}chtiger Ph{\"a}nomene in der Natur, verursacht durch Reflexion, Brechung oder allgemein gesprochen durch Streuung des Lichts an Wassertropfen, Eiskristallen oder Aerosolen. Das farbige Glitzern einer Schneeschicht scheint zun{\"a}chst anderer Natur zu sein, l{\"a}sst sich aber auf analoge Weise erkl{\"a}ren.}, language = {de} } @article{VollmerMoellmann2014, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Achtung Solarofen : Kaustiken von Hochhausverglasungen}, series = {In: Physik in unserer Zeit 45 (2014) 3, 134-139}, journal = {In: Physik in unserer Zeit 45 (2014) 3, 134-139}, doi = {10.1002/piuz.201401360}, pages = {134 -- 139}, year = {2014}, abstract = {Konkav gew{\"o}lbte Glasfassaden von Großbauten k{\"o}nnen bei ung{\"u}nstiger Orientierung zur Sonne zum Brennspiegel werden. Unfreiwillig ber{\"u}hmt gewordene Beispiele sind das Vdara-Hotel in Las Vegas und das "Walkie-Talkie"-Hochhaus in London. Dieser Effekt tritt auch nur an bestimmten Tagen bei passendem Sonnenstand auf. Da die Fassaden keine perfekten Parabolspiegel sind, produzieren sie keinen scharfen Brennpunkt, sondern aufgeweitete Brennflecke, sogenannte Kaustiken. Trotzdem k{\"o}nnen dort hohe Bestrahlungsst{\"a}rken auftreten. Simulationen und Experimente mit Modellen best{\"a}tigen dies.}, language = {de} } @article{VollmerMoellmann2014, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Wenn es knallt und kracht}, series = {In: Physik in unserer Zeit 45 (2014) 3, 148-149}, journal = {In: Physik in unserer Zeit 45 (2014) 3, 148-149}, doi = {10.1002/piuz.201490046}, pages = {148 -- 149}, year = {2014}, abstract = {An die Knallgasprobe erinnert sich wohl noch jeder aus dem Chemieunterricht. Die Zeitskala, auf der Wasserstoff und Sauerstoff reagieren h{\"a}ngt davon ab, ob die beiden Reaktionsgase zu Beginn getrennt oder gemischt vorliegen. Dies zeigt sich deutlich in Hochgeschwindigkeits-Aufnahmen von Experimenten, bei denen Luftballons entweder mit reinem Wasserstoff oder aber mit Knallgas gef{\"u}llt werden.}, language = {de} } @article{VollmerMoellmann2014, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Schnelles Verblassen leuchtender Spuren}, series = {In: Physik in unserer Zeit 45 (2014) 5, 252-253}, journal = {In: Physik in unserer Zeit 45 (2014) 5, 252-253}, doi = {10.1002/piuz.201490088}, pages = {252 -- 253}, year = {2014}, abstract = {Wohl jeder, der schon einmal mit Physik zu tun hatte, kennt die meist gr{\"u}nlichen Leuchtspuren von Oszillographen. Sie erm{\"o}glichen es, zeitabh{\"a}ngige Signale zu visualisieren und quantitativ auszumessen, insbesondere auch dann, wenn die Ph{\"a}nomene sehr schnell ablaufen. Die Reaktionsdynamik der leuchtenden Phosphore auf den Bildschirmen wird mit Hochgeschwindigkeits-Videos deutlich sichtbar.}, language = {de} } @article{VollmerMoellmannSchlichting2014, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter and Schlichting, Hans Joachim}, title = {Double pane windows—elastic deformations, gas thermodynamics, thermal and optical phenomena}, series = {In: European Journal of Physics 35 (2014) 4, 045023}, journal = {In: European Journal of Physics 35 (2014) 4, 045023}, doi = {10.1088/0143-0807/35/4/045023}, year = {2014}, abstract = {Double pane windows are common objects which can enrich physics teaching at undergraduate level at least in five different fields. First, having sealed inner spaces filled with gas, one can discuss gas law problems upon changes of pressure and/or temperature. Second, when discussing temperature differences between inside and outside, one needs to take into account the associated heat transfer mechanisms which define the pane temperatures, enclosing the gas. Third, using elastic properties of the glass, one may treat deformations of the window panes upon those changes or additional manually applied external pressure. Fourth, the reflective properties of glass combined with the pane deformations result in concave or convex mirrors, which when illuminated by the Sun, may lead to focal points on projection areas such as facing houses. Fifth, such areas receive an increased irradiance which leads to associated thermal effects. Starting from the most obvious daily life phenomenon, the fascinating caustics of reflected sunlight on streets or walls, all of these double pane window phenomena are investigated experimentally as well as theoretically.}, language = {en} } @book{NagelMieke2014, author = {Nagel, Michael and Mieke, Christian}, title = {Marketing- und Vertriebsmethoden}, edition = {1. Aufl.}, publisher = {UVK-Verlagsges.}, address = {Konstanz ; M{\"u}nchen}, isbn = {978-3-86764-569-0}, pages = {114}, year = {2014}, subject = {Sales-promotion}, language = {de} } @article{VollmerMoellmann2013, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {James Bond und die zerplatzenden Christbaumkugeln}, series = {Physik in unserer Zeit 44 (2013) 6, 304-306}, journal = {Physik in unserer Zeit 44 (2013) 6, 304-306}, doi = {10.1002/piuz.201390109}, pages = {304 -- 306}, year = {2013}, abstract = {Rohe Eier oder wassergef{\"u}llte Christbaumkugeln platzen beim Eindringen des Projektils einer Luftpistole. Dieser Vorgang l{\"a}sst sich einfach durch die sehr geringe Kompressibilit{\"a}t des Wassers und eine damit verbundene starke Druckerh{\"o}hung erkl{\"a}ren (Physik in unserer Zeit 2013, 44(5), 251). Eine genaue Analyse aller Vorg{\"a}nge sollte aber auch Fragen beantworten wie: Spielen vorhandene Luftblasen in der Fl{\"u}ssigkeit eine Rolle? Wie lange dauert es bis zum Aufplatzen, und muss die wassergef{\"u}llte Kugel eigentlich fest verschlossen sein?}, language = {de} } @article{EtkinaPlaninšičVollmer2013, author = {Etkina, Eugenia and Planinšič, Gorazd and Vollmer, Michael}, title = {Light cone: Engaging students of all levels in processes that physicists use in research}, series = {In: American journal of physics 81 (2013) 11, 815-822}, journal = {In: American journal of physics 81 (2013) 11, 815-822}, doi = {10.1119/1.4822176}, pages = {815 -- 822}, year = {2013}, abstract = {A cone of light appears in a tank of water when a laser pointer shines through the water onto a white piece of paper upon which the tank is sitting. We describe how students can understand the origins of this cone by constructing multiple explanations, then proposing and designing experiments to test their explanations. This process is the foundation of the Investigative Science Learning Environment (ISLE) framework, designed to engage students in the reasoning activities similar to those that physicists use to construct and apply new knowledge. We describe typical student ideas and provide a list of equipment and suggestions for facilitating student exploration relating to optics. We also explain the formal physics behind the phenomena that are involved in the experiment. Finally, we suggest how the ISLE framework can be used to help instructors find problems and experiments that engage students in devising and testing multiple explanations.}, language = {en} } @article{Vollmer2013, author = {Vollmer, Michael}, title = {Infrared}, series = {In: European journal of physics 34 (2013) 6, S49}, journal = {In: European journal of physics 34 (2013) 6, S49}, doi = {doi:10.1088/0143-0807/34/6/S49}, pages = {S49}, year = {2013}, language = {en} } @article{MoellmannVollmer2013, author = {M{\"o}llmann, Klaus-Peter and Vollmer, Michael}, title = {Fourier transform infrared spectroscopy in physics laboratory courses}, series = {In: European journal of physics 34 (2013) 6, S123-S137}, journal = {In: European journal of physics 34 (2013) 6, S123-S137}, doi = {doi:10.1088/0143-0807/34/6/S123}, pages = {S123 -- S137}, year = {2013}, abstract = {nfrared spectrometry is one of the most important tools in the field of spectroscopic analysis. This is due to the high information content of spectra in the so-called spectroscopic fingerprint region, which enables measurement not only of gases, but also of liquids and solids. Today, infrared spectroscopy is almost completely dominated by Fourier transform infrared (FTIR) spectroscopy. FTIR spectroscopy is able to detect minute quantities in the ppm and ppb ranges, and the respective analyses are now standard tools in science as well as industry. Therefore FTIR spectroscopy should be taught within the standard curriculum at university to physicists and engineers. Here we present respective undergraduate laboratory experiments designed for students at the end of their third year. Experiments deal first with understanding the spectrometer and second with recording and analysing spectra. On the one hand, transmission spectra of gases are treated which relate to environmental analytics (being probably the most prominent and well-known examples), and on the other hand, the focus is on the transmission and reflection spectra of solids. In particular, silicon wafers are studied—as is regularly done in the microelectronics industry—in order to characterize their thickness, oxygen content and phonon modes.}, language = {en} } @article{MangoldShawVollmer2013, author = {Mangold, Klaus and Shaw, Joseph A. and Vollmer, Michael}, title = {The physics of near-infrared photography}, series = {In: European journal of physics 34 (2013) 6, S51-S71}, journal = {In: European journal of physics 34 (2013) 6, S51-S71}, doi = {doi:10.1088/0143-0807/34/6/S51}, pages = {S51 -- S71}, year = {2013}, abstract = {The physics behind the sometimes strange effects and 'unnatural' appearance of near-infrared (NIR) photographs is discussed in terms of reflection, absorption and transmission of NIR radiation with the respective objects. Besides discussing how NIR cameras work, several visible and NIR photograph pairs are presented, which include vegetation, natural water, clouds, the sky, and humans. In addition, some physics-oriented experimental NIR images are presented which clearly demonstrate some of the basic physics behind some of these awesome sights.}, language = {en} } @article{VollmerMoellmann2013, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Characterization of IR cameras in student labs}, series = {In: European journal of physics 34 (2013) 6,}, journal = {In: European journal of physics 34 (2013) 6,}, doi = {doi:10.1088/0143-0807/34/6/S73}, pages = {S73 -- S90}, year = {2013}, abstract = {The content of a student lab course is described which deals with characterization of the most important parameters governing the performance of infrared cameras. In detail, the parameters describing the temperature resolution, spatial resolution and time resolution of commercial IR cameras are analysed using simple lab experiments. Understanding the respective performance of the system is the prerequisite for applying infrared thermal imaging to quantitative measurements in physics and technology.}, language = {en} } @inproceedings{VollmerMoellmann2013, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {The magic of the invisible: using IR imaging in physics education}, series = {In: InfraMation proceedings / Infrared Training Center. - Vol. 14 (2013)}, booktitle = {In: InfraMation proceedings / Infrared Training Center. - Vol. 14 (2013)}, year = {2013}, language = {en} }