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Prof. Dr. Thomas Ottmann

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Bücher

1. J. Albert, Th. Ottmann. Automaten, Sprachen und Maschinen für Anwender. Reihe Informatik, Bd. 38, Mannheim. 1983.
2. Th. Ottmann, M. Schrapp, P. Widmayer. Pascal in 100 Beispielen. Stuttgart. 1983.
3. Th. Ottmann, P. Widmayer. Algorithmen und Datenstrukturen. xvii+716 Seiten, 4. Auflage, Spektrum Akademischer Verlag, Heidelberg. 2002.
4. Th. Ottmann, P. Widmayer. Programmierung mit PASCAL. Teubner Studienskripten, Bd. 84, 7. Auflage, Stuttgart. 2004.


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Herausgegebene Bücher

1. Th. Ottmann. Automata, Languages and Programming. 14th International Colloquium, Karlsruhe, Proceedings, Lecture Notes in Computer Science, Bd. 267. 1987.
2. B. Monien, Th. Ottmann. Data Structures and Efficient Algorithms. Lecture Notes in Computer Science, Bd. 594. 1992.
3. Th. Ottmann, I. Tomek. Educational Multmedia and Hypermedia Annual 1994. Proceedings of the World Conference on Educational Multimedia and Hypermedia, Vancouver, BC, Canada; Association for the Advancement of Computing in Education. 1994.
4. Th. Ottmann. Prinzipien des Algorithmenentwurfs. Multimediales Lehrbuch mit Beiträgen von A. Brüggemann-Klein, J. Eckerle, A. Heinz, R. Klein, K. Mehlhorn, Th. Roos, S. Schuierer, P. Widmayer, Spektrum Akademischer Verlag, Bd. 244. 1997.
5. Z. Halim, Th. Ottmann, Z. Razak. Proceedings of ICCE 97 International Conference of Computers in Education, Kuching, Malaysia. 1997.
6. Th. Ottmann, I. Tomek. Proceedings of the 10th World Conference on Educational Multimedia and Hypermedia & World Conference on Educational Telecommunications, ED-MEDIA & ED-Telecom '98, Freiburg, AACE, Charlottesville, VA. 1998.
7. P.T. Kandzia, Th. Ottmann. E-Learning für die Hochschule, Medien in der Wissenschaft, Band 15,Waxmann, Münster u.a. 2003.


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Aufsätze in Fachzeitschriften

1. Th. Ottmann. Über Möglichkeiten zur Simulation endlicher Automaten durch eine Art sequentieller Netzwerke aus einfachen Bausteinen. Zeitschrift für Math. Logik und Grundlagen der Mathematik, Bd. 19, S. 223-238. 1973.
2. P. Koerber, Th. Ottmann. Simulation endlicher Automaten durch Ketten aus einfachen Bausteinautomaten. Elektronische Informationsverarbeitung und Kybernetik EIK, 10, 2/3, S. 133-148. 1974.
3. Th. Ottmann. Arithmetische Prädikate über einem Bereich endlicher Automaten. Archiv für Mathematische Logik und Grundlagenforschung 16, S. 159-176. 1974.
4. Th. Ottmann. Eine universelle Turingmaschine mit zweidimensionalem Band, 7 Buchstaben und 2 Zuständen. Elektronische Informationsverarbeitung und Kybernetik, Bd. 11, 1/2, S. 27-38. 1975.
5. Th. Ottmann. Mengenlehre oder Funktionenlehre? Mathematisch-Physikalische Semesterberichte Nr. XXII, Bd. 2, S. 198-214. 1975.
6. H. Maurer, Th. Ottmann, H.-W. Six. Implementing dictionaries using binary trees of very small height. Information Processing Letters, vol. 5, no. 1, pp. 11-14. 1976.
7. Th. Ottmann. Mit regulären Grundbegriffen definierbare Prädikate. Computing 14, pp. 213-223. 1976.
8. Th. Ottmann. Rekursive Prozeduren und partiell rekursive Funktionen. Mathematisch-Physikalische Semesterberichte no. XXIII, Bd. 2, S. 206-227. 1976.
9. Th. Ottmann, H.-W. Six. Eine neue Klasse von ausgeglichenen Binärbäumen. Angewandte Informatik 9/76, S. 395-400. 1976.
10. H. Kleine Büning, Th. Ottmann. Kleine universelle mehrdimensionale Turingmaschinen. Elektronische Informationsverarbeitung und Kybernetik, Bd. 13, S. 179-201. 1977.
11. H. Maurer, Th. Ottmann, A. Salomaa. On the Form Equivalence of L-Forms. Theoretical Computer Science 4, pp. 199-225. 1977.
12. Th. Ottmann. Lokale Simulierbarkeit zweidimensionaler Turingmaschinen. Elektronische Informationsverarbeitung und Kybernetik, Bd. 13, S. 465-471. 1977.
13. H. Hule, H. Maurer, Th. Ottmann. Good OL-Forms. Acta Informatica, vol. 9, pp. 345-353. 1978.
14. K. Culik II, H. Maurer, Th. Ottmann. On two-symbol complete EOL-Forms. Theoretical Computer Science 6, pp. 69-92. 1978.
15. K. Culik II, H. Maurer, Th. Ottmann, K. Ruohonen, A. Salomaa. Isomorphism, Form Equivalence and Sequence Equivalence of PDOL-Forms. Theoretical Computer Science 6, pp. 143-173. 1978.
16. Th. Ottmann. Eine einfache universelle Menge endlicher Automaten. Zeitschrift für Math. Logik und Grundlagen der Mathematik, Bd. 24, S. 55-61. 1978.
17. Th. Ottmann, D. Wood. Deletion in one-sided height-balanced search trees. International Journal of Computer Mathematics, vol. 6, pp. 265-271. 1978.
18. Th. Ottmann, H.-W. Six, D. Wood. Right brother trees. Communications of the ACM, vol. 21, pp. 769-776. 1978.
19. J. Bentley, Th. Ottmann. Algorithms for Reporting and Counting Geometric Intersections. IEEE Trans. Comput. C-28, 9, pp. 643-647. 1979.
20. Th. Ottmann, H.-W. Six, D. Wood. One sided k-height-balanced trees. Computing, 22, pp. 283-290. 1979.
21. Th. Ottmann, H.-W. Six, D. Wood. On the correspondence between AVL trees and brother trees. Computing, 23, pp. 43-54. 1979.
22. Th. Ottmann, D. Wood. 1-2 brother trees or AVL trees revisited. The Computer Journal, vol. 23, no. 3, pp. 248-255. 1980.
23. Th. Ottmann, W. Stucky. Higher order analysis of random 1-2 brother trees. BIT, vol. 20, no. 3, pp. 302-314. 1980.
24. J. Albert, H. Maurer, Th. Ottmann. On sub-regular EOL forms. Fundamenta Informaticae, vol. 1, pp. 135-149. 1981.
25. K. Culik II, Th. Ottmann, D. Wood. Dense multiway trees. ACM Transactions on Database Systems, vol. 6, no.3, pp. 486-512. 1981.
26. P. Koesler, Th. Ottmann. An experimental study of insertion schemes for classes of multiway search trees. International Journal of Computer Mathematics, Section A, vol. 9, pp. 185-193. 1981.
27. Th. Ottmann, A. Salomma, D. Wood. Sub-regular grammar forms. Information Processing Letters, vol. 12, no. 4, pp. 184-187. 1981.
28. Th. Ottmann, H.-W. Six, D. Wood. The Implementation of Insertion and Deletion Algorithms for 1-2 Brother Trees. Computing, 26, pp. 367-378. 1981.
29. Th. Ottmann, A. L. Rosenberg, L. J. Stockmeyer. A Dictionary Machine (for VLSI). IEEE Transact. Comput., vol. C-31, no. 9, pp. 892-897. 1982.
30. Th. Ottmann, D. Wood. A Comparison of Iterative and Defined Classes of Search Trees. International Journal of Computer and Information Sciences, vol. 11, no. 3, pp. 155-178. 1982.
31. J. Bentley, Th. Ottmann, P. Widmayer. The Complexity of Manipulating Hierarchically Defined Sets of Rectangles. Advances in Computing Research, vol. 1, edited by F. P. Preparata, pp. 127 - 158. 1983.
32. Th. Ottmann, P. Widmayer. On Translating a Set of Line Segments. Computer Vision, Graphics and Image Processing, 24, pp. 382-389. 1983.
33. H. Edelsbrunner, Th. Ottmann, J. van Leeuwen, D. Wood. Computing the Connected Components of Simple Rectilinear Geometrical Objects in D-Space. RAIRO Theoretical Informatics, vol. 18, no. 2, pp. 171-183. 1984.
34. Th. Ottmann, A. L. Rosenberg, H.-W. Six, D. Wood. Binary Search-Trees with Binary Comparison Cost. International Journal of Computer and Information Sciences, 13, pp. 77-101. 1984.
35. Th. Ottmann, D. Wood. Dynamical Sets of Points. Computer Vision, Graphics and Image Processing, 27, pp. 157-166. 1984.
36. Th. Ottmann, E. Soisalon-Soininen, D. Wood.. On the Definition and Computation of Rectilinear Convex Hulls. Information Sciences, 33, pp. 157-171. 1984.
37. Th. Ottmann, S. Parker, A. L. Rosenberg, H.-W. Six, D. Wood. Minimal cost brother trees. SIAM Journal Comp., vol. 13, pp. 197-217. 1984.
38. Ph. Flajolet, Th. Ottmann, D. Wood. Search Trees and Bubble Memories. RAIRO Theoretical Informatics, vol. 19, no. 2, pp. 137-164. 1985.
39. Th. Ottmann, M. Schrapp, D. Wood. Purely Top-Down Updating Algorithms for Stratified Search Trees. Acta Informatica 22, pp. 85-100- 1985.
40. Th. Ottmann, P. Widmayer, D. Wood. A Fast Algorithm for Boolean Mask Operations. Computer Vision, Graphics and Image Processing, vol. 30, pp. 249-268. 1985.
41. Th. Ottmann, P. Widmayer, D. Wood. A Worst-Case Efficient Algorithm For Hidden-Line Elimination. International Journal of Computer Math., vol. 18, pp. 93-119. 1985.
42. Th. Ottmann. Ist das Programmieren eine Kunst oder eine Wissenschaft? Schriftenreihe der Westfälischen Wilhelms-Universität Münster, Neue Folge, Heft 8, S. 112-130. 1986.
43. Th. Ottmann, D. Wood. EOL Grammars and Search Trees. The Book of L, edited by G. Rozenberg, A. Salomaa, Springer Verlag, pp. 349-359. 1986.
44. Th. Ottmann, D. Wood. Space-Economical Plane-Sweep Algorithms. Computer Vision, Graphics, and Image Processing, 34, pp. 35-51. 1986.
45. F. Makedon, H. Maurer, Th. Ottmann. Presentation Type CAI in Computer Science Education at University Level. Journal of Microcomputer Applications, 10, pp. 283-295. 1987.
46. R. H. Güting, Th. Ottmann. New Algorithms for Special Cases of the Hidden Line Elimination Problem. Computer Vision, Graphics, and Image Processing 40, pp. 188-204. 1987.
47. Th. Ottmann. Entwicklung und Einsatz computergestützter Unterrichtslektionen für den Informatikunterricht an der Hochschule. Computer-Anwendungen Universität Karlsruhe, CAK 4, S. 63-75. 1987.
48. Th. Ottmann, E. Soisalon-Soininen, D. Wood. Partitioning and Separating Sets of Orthogonal Polygons. Information Sciences 42, pp. 31-49. 1987.
49. Th. Ottmann, G. Thiemt, Ch. Ullrich. On Arithmetical Problems of Geometric Algorithms in the Plane. Computing, Supplement 6, pp. 123-136. 1988.
50. R. H. Güting, O. Nurmi, Th. Ottmann. Fast Algorithms for Direct Enclosures and Direct Dominances. Journal of Algorithms, 10, pp. 170-186. 1989.
51. R. Klein, O. Nurmi, Th. Ottmann, D. Wood. Dynamic fixed windowing problems. Algorithmica 4, pp. 535-550. 1989.
52. A. Andersson, Chr. Icking, R. Klein, Th. Ottmann. Binary Search Trees of Almost Optimal Height. Acta Informatica, 28, pp. 165-178. 1990.
53. Th. Ottmann, D. Wood. Defining families of trees with E0L grammars. Discrete Applied Mathematics, 32, pp. 195-209. 1991.
54. Th. Ottmann, D. Wood. Updating binary trees with constant relinking cost. International Journal of Foundations of Computer Science, vol. 3, no. 4, pp. 479-501. 1992.
55. F. Malucelli, Th. Ottmann, D. Pretolani. Efficient labelling algorithms for the Maximum Non Crossing Matching Problem. Discrete Applied Mathematics, vol. 47, pp. 175-179. 1993.
56. A. Andersson, Th. Ottmann. New tight bounds on uniquely represented dictionaries. SIAM Journal on Computing, Vol. 24, No. 5, pp. 1091-1103. 1995.
57. Ch. Bacher, Th. Ottmann. Authoring on the Fly. Journal of Universal Computer Science, vol.1, no. 10, pp. 706-717. 1995.
58. S. Hanke, Th. Ottmann, S. Schuierer. The Edge-Flipping Distance of Triangulations. Journal of Universal Computer Science, vol. 2, no. 8, pp. 570-579. 1996.
59. Th. Ottmann. Telepräsentationen effizient: Generierung dynamischer Offline-Dokumente, in: DFN Spezial 1-3/99, Verteiltes Lehren und Lernen im Deutschen Forschungsnetz, pp. 20-21. 1999.
60. Th. Ottmann, R. Müller. The "Authoring on the Fly"-System for Automated Recording and Replay of (Tele)presentations, ACM/Springer Multimedia Systems Journal, Special Issue on "Multimedia Authoring and Presentation Techniques", vol. 8, no. 3, pp. 158-176. 2000.
61. A. Datta, Th. Ottmann. Towards a Virtual University. Journal of Universal Computer Science, vol. 7, no. 10, pp.870-885. 2001.
62. K. S. Larsen, Th. Ottmann, E. Soisalon-Soininen. Relaxed Balance for Search Trees with Local Rebalancing. Acta Informatica, vol. 37, no. 10, pp. 743-763. 2001.
63. P.-T. Kandzia, Th. Ottmann. How Real is the Virtual University in the Upper Rhine Valley? in: International Journal on Engineering Education, vol. 17, no. 2, pp. 138-144. 2001.
64. T. Lauer, R. Müller, Th. Ottmann. Animations for Teaching Purposes: Now and Tomorrow. Journal of Universal Computer Science, Special Issue on "Future of Computer Science Symposium", vol. 7, no. 5, pp. 420-433. 2001.
65. T. Ottmann, R. Müller, G. Seitz, C. Steinert. Video in Vorlesungsaufzeichnungen mit informatikfernen Inhalten am Beispiel Archäologie, in: Informatica Didactica, Zeitschrift für fachdidaktische Grundlagen der Informatik, Ausgabe Nr. 2. 2001.
66. Th. Ottmann, S. Schuierer, S. Soundaralakshmi. Enumerating extreme points in higher dimensions, in: Nordic Journal of Computing 8, pp. 179-192. 2001.
67. T. Lauer, Th. Ottmann, S. Trahasch, J. M. Haake, H.-R. P., K. Bauer, F. W. Hesse. DFG-Schwerpunktprogramm Netzbasierte Wissenskommunikation in Gruppen. IT - Information Technology, 48(1):52--59, Oldenbourg Wissenschaftsverlag, Feb. 2006.
68. T. Lauer, Th. Ottmann, A. Datta. Update-efficient data structures for dynamic IP router tables. International Journal of Foundations of Computer Science, 18(1):139--161, Feb. 2007. World Scientific Publishing Company. 2007.


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Tagungs- und Buchbeiträge

1. Th. Ottmann. Ketten und arithmetische Prädikate von endlichen Automaten. 1. GI Fachtagung über Automatentheorie und Formale Sprachen. Lecture Notes in Computer Science, vol. 2, pp. 74-90. 1973.
2. H. Maurer, Th. Ottmann, H.-W. Six. Manipulation of number sets using balanced trees. Graphen, Algorithmen, Datenstrukturen, edited by H. Noltemeier, Munich-Vienna pp. 9-37. 1976.
3. H. Maurer, Th. Ottmann. Tree-Structures for Set Manipulation Problems. Proceedings of the Sixth International Symposium on Mathematical Foundations of Computer Science, Tatranska Lomnica, September 5-9, Lecture Notes in Computer Science, vol. 53, pp. 108-121. 1977.
4. H.-P. Kriegel, Th. Ottmann. Left-Fitting Translations. Fourth International Colloquium on Automata Languages and Programming, Lecture Notes in Computer Science, vol. 52, pp. 309-322. 1977.
5. Th. Ottmann, H-W. Six, D. Wood. New results in balanced search trees. Ergebnisse des Workshop WG 77, 3. Fachtagung über graphentheoretische Konzepte der Informatik, Linz, edited by J. Mühlbacher, pp. 107-124. 1977.
6. H. Maurer, Th. Ottmann. Manipulating sets of points - a survey. Ergebnisse des Workshop WG 78, Graphentheoretische Konzepte in der Informatik, Erlangen, Graphs, Data Structures, Algorithms, edited by M. Nagel and H. J. Schneider, pp. 9-29. 1978.
7. Th. Ottmann. A uniform approach to balanced binary and multiway trees. Mathematical Foundations of Computer Science, Proceedings, Olomouc, CSSR, edited by J. Becvar, Lecture Notes in Computer Science, vol. 74, pp. 398-407. 1979.
8. Th. Ottmann, H.-W. Six, A. L. Rosenberg. Node visit optimal 1-2 brother trees. GI Tagung über Theoretische Informatik, Aachen, Lecture Notes in Computer Science, vol. 67, pp. 213-221. 1979.
9. H. Maurer, Th. Ottmann. Dynamic Solutions of Decomposable Searching Problems. Discrete Structures and Algorithms, edited by Uwe Pape, Proceedings of the Workshop 79, 5th Conference on Graph-theoretic Concepts in Computer Science, Munich, pp. 17- 24. 1980.
10. J. L. Bentley, Th. Ottmann. The Power of a One-Dimensional Vector of Processors. Proceedings of the 6th Conference on Graphtheoretic Concepts in Computer Science, Bad Honnef, Lecture Notes in Computer Science, vol. 100, pp. 80-89. 1980.
11. Th. Ottmann, H.-W. Six, D. Wood. The Analysis of Search trees: A Survey. Proceedings of the 6th Conference on Graph-theoretic Concepts in Computer Science, June 15-18, Bad Honnef, Lecture Notes in Computer Science, vol. 100, pp. 234-249. 1980.
12. J. L. Bentley, Th. Ottmann. The Complexity of Manipulating Hierarchically Defined Sets of Rectangles. Mathematical Foundations of Computer Science, edited by J. Gruska and M. Chytil, Lecture Notes in Computer Science, vol. 118, pp. 1-15. 1981.
13. Th. Ottmann, A. L. Rosenberg. A Realistic Cost Measure for Binary Search Trees. Proceedings of the 7th Conference on Graph-theoretic Concepts in Computer Science, Linz (Austria), edited by J. Mühlbacher, pp. 163-172. 1981.
14. Th. Ottmann, M. Schrapp. 1-Pass Top-down Update Schemes for Balanced Search Trees. Proceedings of the 7th Conference on Graph-theoretic Concepts in Computer Science, Linz (Austria), edited by J. Mühlbacher, pp. 279-291. 1981.
15. B. Chazelle, Th. Ottmann, E. Soisalon-Soininen, D. Wood. The Complexity and Decidability of SEPARATION. Proceedings of ICALP 84, Antwerpen, Lecture Notes in Computer Science, vol. 172, pp. 119-127. 1984.
16. Th. Ottmann. Geometrische Probleme beim VLSI-Design. Proceedings GI-Jahrestagung, Braunschweig, IFB 89, Springer Verlag, S. 58-68. 1984.
17. Th. Ottmann, M. Schrapp. Bücher für Nichtleser? oder: Neue Wege in der Satztechnik. Tagung Mikroelektronik für den Menschen, Linz, September 1984, Proceedings Bd. 1, FIM Linz, S. 441-451. 1984.
18. Th. Ottmann, P. Widmayer. Solving Visibility Problems by Using Skeleton Structures. Proceedings of MFCS 1984, Prag, edited by M.P. Chytil and V. Koubek, Lecture Notes in Computer Science, vol. 176, pp. 459-470. 1984.
19. R. H. Güting, O. Nurmi, Th. Ottmann. The Direct Dominance Problem. Proceedings of the 1st annual Symposium on Computational Geometry, Johns Hopkins University, Baltimore, MA. 1985.
20. R. H. Güting, Th. Ottmann. New Algorithms for Special Cases of the Hidden Line Elimination Problem. Proceedings STACS 85, Lecture Notes in Computer Science, vol. 182, pp. 161-172. 1985.
21. Th. Ottmann. Computational Geometry: Selected Algorithms and Paradigms. Proceedings EUROCAL 1985, Linz, Lecture Notes in Computer Science, vol. 203, pp. 80-92. 1985.
22. R. Klein, O. Nurmi, Th. Ottmann, D. Wood. Optimal dynamic solutions for fixed windowing problems. Proceedings of the 2nd Annual Symposium on Computational Geometry, Yorktown Heights, NY, pp. 109-115. 1986.
23. Th. Ottmann. Verarbeitung und Verwaltung geometrischer Daten. Einführung in das Fachgespräch auf der GI-Jahrestagung, Berlin 1986, IFB 126, S. 437-440. 1986.
24. Th. Ottmann, P. Widmayer. Modellversuch computergestützter Informatikunterricht: Algorithmen und Datenstrukturen. Proceedings Informatik Grundbildung in Schule und Beruf, IFB 129, Springer Verlag, 1986, Kaiserslautern, S. 420-431. 1986.
25. Chr. Icking, R. Klein, Th. Ottmann. Priority Search Trees in Secondary Memory. Graph-theoretic concepts in computer Science (WG '87), Staffelstein, Lecture Notes in Computer Science, vol. 314, edited by H. Göttler, H.J. Schneider, pp. 84-93. 1987.
26. Th. Ottmann, G. Thiemt, Ch. Ullrich. Numerical stability of simple geometric algorithms in the plane. Computation Theory and Logic, edited by E. Börger, Lecture Notes in Computer Science,vol. 270, pp. 277-293. 1987.
27. Th. Ottmann, G. Thiemt, Ch. Ullrich. Numerical Stability of Geometric Algorithms. Proceedings of the 3rd ACM Symposium on Computational Geometry. Waterloo, Ontario, pp. 119-125. 1987.
28. B. Becker, Th. Ottmann. Identitätsprüfung von Polygonzügen aus kartographischen Datenbasen. Austragraphics '88, edited by A. Clauer, W. Purgathofer, Informatik Fachberichte 183, pp. 105-119. 1988.
29. F. Makedon, H. Maurer, Th. Ottmann. Computer Learning: A Step Beyond the Book. HECTOR, Volume 1: New Ways in Education and Research, edited by B. Krause, A. Schreiner, Springer Verlag, pp. 441-449. 1988.
30. Th. Ottmann. Can Teaching by Computers Replace Teaching by Professors? -- Results of an Experimental Study at the University of Karlsruhe. Remote Education and Informatics: Teleteaching, edited by F. Lovis, North Holland, pp. 219-227. 1988.
31. Th. Ottmann, P. Widmayer. Erstellung und Nutzung von Präsentationsgraphiklektionen für den Informatikunterricht. Computer-Investitionsprogramm (CIP) im Hochschulbereich: Sachstand und Perspektiven, Schriftenreihe Studien zu Bildung und Wissenschaft, Bd. 66, S. 102-112. 1988.
32. J. Dobrinski, Th. Ottmann. How can educational software survive current hardware? Lecture Notes in Computer Science, vol. 360, ICCAL '89, edited by H. Maurer, Computer Assisted Learning, pp. 65-76. 1989.
33. Th. Ottmann, D. Wood. How to Update a Balanced Binary Tree with a Constant Number of Rotations. Proceedings SWAT '90, Lecture Notes in Computer Science, vol. 447, pp. 122-131. 1990.
34. F. Augenstein, Th. Ottmann, J. Schöning. Ein typ- und regelgesteuertes Autorensystem. Hypertext/Hypermedia '91, Graz, Austria, Informatik-Fachbericht Nr. 276, S. 25-33. 1991.
35. Th. Ottmann. Trees -- A Personal View. New Trends and Results in Computer Science, International Colloquium Graz, Austria, Lecture Notes in Computer Science, vol. 555, 1991, pp. 243-255. 1991.
36. Th. Ottmann. Elektronische Kurse - Kritische Bilanz und Konsequenzen für die Werkzeugentwicklung. Informatik und Schule. Informatik und Schule 1991, P. Gorny (Hrsg.), Informatik Fachberichte Bd. 292, S. 1-15. 1991.
37. F. Augenstein, Th. Ottmann, J. Schöning. How to Incorporate Expert Knowledge into an Authoring System. Proceedings of the IFIP TC3 / WG3.4 Working Conference on Computer Mediated Education of Information Technology Professionals and Advanced End-Users, edited by J. Eccleston, B. Z. Barta and R. Hambusch, Amsterdam. 1993.
38. F. Augenstein, Th. Ottmann, J. Schöning. Logical Markup for Hypermedia Documents: The TRAIN-System. Educational Multimedia and Hypermedia Annual 1993, Proceedings of the World Conference on Educational Multimedia and Hypermedia (AACE), edited by H. Maurer, Orlando, FL, pp. 17-25. 1993.
39. A. Brüggemann-Klein, P. Fischer, Th. Ottmann. Learning Picture Sets from Examples. Results and Trends in Theoretical Computer Science, edited by J. Karhumäki, H. Maurer, G. Rozenberg, Lecture Notes in Computer Science, vol. 812, pp. 34-43. 1994.
40. Ch. Bacher, Th. Ottmann. A new language for defining sample answers in authoring systems. Proceedings of the World Conference on Educational Multimedia and Hypermedia, ED-MEDIA, Vancouver, p. 628. 1994.
41. F. Augenstein, Th. Ottmann, J. Schöning. TRAIN: A Hypermedia System Architecture for Documents with Logical Markup. Directions and Issues in Multimedia Research, Proceedings Workshop on Multimedia System Architectures and Applications, Schloss Dagstuhl. 1994.
42. J. Eckerle, Th. Ottmann. An Efficient Data Structure for Bidirectional Search. Proceedings of the European Conference on Artificial Intelligence, ECAI '94, edited by A. G. Cohn, Amsterdam, pp. 600-604. 1994.
43. R. Friedrich, Th. Ottmann, S. Schuierer. Two-Dimensional String Matching for Non-Rectangular Patterns. Journal of Computing and Information, Vol. 1, No. 1, Special Issue: Proceedings of the 6th International Conference on Computing and Information, Trent University, May 26-28, pp. 247-262. 1994.
44. Th. Ottmann, S. Schuierer, S. Soundaralakshmi. Enumerating Extreme Points in Higher Dimensions. Proceedings on Theoretical Aspects of Computer Science, STACS '95, edited by E. W. Mayr and Claude Puech, Lecture Notes in Computer Science, vol. 900, Berlin, pp. 562-570. 1995.
45. Ch.Bacher, Th. Ottmann. Tools and Services for Authoring on the Fly. Proceedings ED-MEDIA '96, Boston, MA, pp. 7-12. 1996.
46. J. Eckerle, R. Müller, Th. Ottmann. An Environment for Experiments and Simulations in Heuristic Search. New Media for Education and Training in Computer Science, 2nd Russian-German Symposium, Moscow, edited by A. P. Swiridow, P. Widmayer, W. D. Oberhoff, H. Unger. Infix-Verlag, St. Augustin, pp. 138-138. 1996.
47. Th. Ottmann. Hochschullehrer als Autoren und Nutzer von Lehrsoftware. Zukunftsperspektiven der digitalen Vernetzung, edited by G. Müller, U. Kohl and R. Strauss. dpunkt Verlag Heidelberg, S. 151-162. 1996.
48. A. Datta, K. Krithivasan, Th. Ottmann. An Optimal Algorithm for One-separation of a Set of Isothetic Polygons, with Extensions to Higher Dimensions. Proceedings CIAC '97, Rome, Italy, Lecture Notes in Computer Science, vol. 1203, pp. 110-121. 1997.
49. Ch. Bacher, R. Müller, Th. Ottmann, M. Will. An Integrated Environment for MBone Session Recording and Replay. Proceedings ED-MEDIA '97, Calgary, Canada. 1997.
50. Ch. Bacher, R. Müller, Th. Ottmann. Ein Weg zur Integration von Live-Vorlesung, Teleteaching und Lehrsoftwareproduktion. Proceedings Mediengestützte wissenschaftliche Weiterbildung, TU Braunschweig, S. 261-272. 1997.
51. Ch. Bacher, R. Müller, Th. Ottmann, M. Will. Authoring on the Fly. INFOS '97, Duisburg. 1997.
52. Ch. Bacher, R. Müller, Th. Ottmann, M. Will. Authoring on the Fly. A new way of integrating telepresentation and courseware production. Proceedings ICCE '97, Kuching, Sarawak, Malaysia, pp. 89 - 96. 1997.
53. Larsen, K. S., Ottmann, Th., Soisalon-Soininen, E.(1997). Relaxed Balance for Search Trees with Local Rebalancing. In Proceedings Fifth Annual Eoropean Symposium on Algorithms, Lecture Notes in Computer Science, 1284 (1997), pp. 350-363. 1997.
54. S. Hanke, Th. Ottmann, E. Soisalon-Soininen. Relaxed Balanced Red-Black Trees. Proceedings CIAC '97, Rome, Italy, Lecture Notes in Computer Science, vol. 1203, pp. 193-204. 1997.
55. Th. Ottmann. Das Divide-and-Conquer-Prinzip. In: Th. Ottmann (Hrsg.): Prinzipien des Algorithmenentwurfs, Spektrum Akademischer Verlag, Heidelberg. 1997.
56. Th. Ottmann. Das Backtrack-Prinzip. In: Th. Ottmann (Hrsg.): Prinzipien des Algorithmenentwurfs, Spektrum Akademischer Verlag, Heidelberg. 1997.
57. Th. Ottmann, J. Eckerle. Heuristische Suche. In: Th. Ottmann (Hrsg.): Prinzipien des Algorithmenentwurfs. Spektrum Akademischer Verlag, Heidelberg. 1997.
58. P. A. Gloor, R. D. Harding, Th. Ottmann. New media in (computer) science teaching at university level, in: Dagstuhl Seminar No. 98051, Schloss Dagstuhl, Wadern. 1998.
59. P. Kandzia, Th. Ottmann. VIROR: The virtual university in the Upper Rhine Valley, A new challenge for four prestigious universities in Germany, RUFIS '99, Role of Universities in the Future Information Society, Nothern Arizona University, Flagstaff, Arizona, USA, Oktober. 1999.
60. P.-T. Kandzia, Th. Ottmann. Wie real ist die Virtuelle Hochschule Oberrhein? In: Festschrift zum 60. Geburtstag von Wolffried Stucky, pp. 141 - 152, Teubner: 1999.
61. T. Steinberg, L. Cheng, F. Makedon, L. Shen, Th. Ottmann, C. Owen. Tracking Pointer Activity During Lectures: A Data Mining Framework for Digital Libraries of Recorded Presentations. In Proceedings of the International Conference on Computers in Education, ICCE 99, Japan. 1999.
62. T. Steinberg, L. Cheng, L. Shen, F. Makedon, C. Owen, Th Ottmann. A Model for Authoring FOR Retrieval (AFR): Retrieval on Parallel Data Stream of Recorded Lecture Information. In SPIE International Symposium on Voice, Video, and Data Communications, Boston, USA. 1999.
63. Th. Ottmann. Beitrag zur Ringvorlesung "Wissensmarkt Internet" an der TU Hamburg Harburg, in: Harburger Beiträge zur Psychologie und Soziologie. 1999.
64. Th. Ottmann. Implementation and Usage of an Extended Whiteboard for Teleteaching and Authoring on the Fly, TERENA--NORDUnet Networking Conference 1999, Lund, Schweden. 1999.
65. Th. Ottmann. Virtelles Lehren und Lernen im Hochschulumfeld, Fachkonferenz Lernen und Arbeiten im Netz, Senatsverwaltung für Arbeit, berufliche Bildung und Frauen, Berlin. 1999.
66. Th. Ottmann. Project VIROR: The Virtual University in the Upper Rhine Valley. 2nd International Conference on New Learning Technologies, Bern: 1999.
67. Th. Ottmann, R. Müller, G. Seitz, C. Steinert. Video in Vorlesungsaufzeichnungen mit informatikfernen Inhalten am Beispiel Archäologie, GI-Workshop "Neue Medien in Forschng und Lehre", 29. GI-Jahrestagung: 1999.
68. Th. Ottmann. Entwicklung und Nutzung eines erweiterten Whiteboards für Teleteaching und Authoring on the fly. Deutsches Forschungsnetz - eine Zwischenbilanz. DFN-Workshop, Berlin: 2000.
69. Th. Ottmann. The Virtual University in the Upper Rhine Valley. Trierer Symposium Virtuelle Hochschule, Virtuelle Hochschule Preprint 2000-05, Trier: 2000.
70. Th. Ottmann. Möglichkeiten und Grenzen der Virtualisierung des Informatikstudiums. 30. GI-Jahrestagung (Informatik 2000), Berlin: 2000.
71. Amitava Datta, Th. Ottmann. Towards a Virtual University. INFO-UNI 2001, Havanna Cuba, pp. 25-29. 2001.
72. R. Müller, Th. Ottmann. Electronic Note-Taking Systems, Problems and their Use at Universities. In: H. H. Adelsberger, B. Collis, J. M. Pawlowski (Hrsg.): Handbook on Information Technologies for Education and Training, Springer-Verlag, Heidelberg. 2001.
73. T. Lauer, Th. Ottmann, S. Trahasch. Seamless production of online courses by lecture recording. Proceedings of the 1. ARIADNE 2001 Annual Conference "E-Learning in Practice", Leuven, 1.2/15 - 18. 2001.
74. W. Hürst, G. Maass, R. Müller, Th. Ottmann. The Authoring on the Fly System for Automatic Presentation Recording. Extended Abstract. Conference on Human Factors in Computer Science, ACM CHI 2001 Conference on Human Factors in Computing Systems, Seattle, WA, USA, pp. 5-6. 2001.
75. R. Müller, Th. Ottmann, H. Zhang. Presentation Recording as a means to go virtual for Campus-based Universities. Proceedings of IRMA 2002, Seattle, WA, USA. 2002.
76. T. Lauer, Th. Ottmann. Means and methods in automatic courseware production: experience and technical challenges. Proceedings of E-Learn 2002, Montreal, Kanada, pp. 553 - 560. 2002.
77. Th. Ottmann. Neue Wege in der Content Erstellung: Von der Präsenzveranstaltung zum interaktiven Webkurs. In Proceedings of the 11.Europäischer Kongress und Fachmesse für Bildungs- und Informationstechnologie, LEARNTEC, Karlsruhe. 2002.
78. K. A. Mohamed, Th. Ottmann. Fast interpretation of pen gestures with competent agents. In P. Vadakkepat, W.W. Tan, K.C. Tan and A.P. Loh (editors), Proceedings of the IEEE Second International Conference on Computational Intelligence, Robotics and Autonomous Systems, pages PS09-4, Singapore. Dec. 2003.
79. R. Müller, Th. Ottmann. Content production and the essence of simplicity. In Proceedings of the 4th International Conference on Information Technology Based Higher Education and Training (ITHET 03), Marrakech, Marocco. IEEE Education Society. Jul. 2003.
80. R. Müller, Th. Ottmann. Content Production and the Essence of Simplicity. In: Proceedings of ITHET 03, July 7-9, Marrakech, Morocco. 2003.
81. T. Fiehn, T. Lauer, J. Lienhard, Th. Ottmann, S. Trahasch, B. Zupancic. >From lecture recording towards personalized collaborative learning. In Proceedings of CSCL 2003, International Conference on Computer Support for Collaborative Learning, pages 471--475, Bergen, Norway. Kluwer Academic Publishers. Jun. 2003.
82. T. Lauer, J. Lienhard, R. Müller Th. Ottmann. Multimediales Aufzeichnen von Lehrveranstaltungen. In Paul-Thomas Kandzia and Thomas Ottmann (editors), E-Learning für die Hochschule - Erfolgreiche Ansatze für ein flexibleres Studium (Kapitel 11), pages 149--160, Münster, Germany. Waxmann. Sep. 2003.
83. T. Lauer, Th. Ottmann, S. Trahasch. Systems Support for Virtualizing Traditional Courses in Science and Engineering. In Proceedings of Quality Education at a Distance, IFIP WG3.6, Geelong, Australia, pp. 73-82. 2003.
84. Th. Ottmann. Technische und organisatorische Schritte auf dem Weg in der globalisierten Bildungsmarkt, DFN - Presseseminar, Müchen (Multimediale Publikation, DFN - Verein, Berlin, 2003). 2003.
85. K. A. Mohamed, L. Belenkaia, Th. Ottmann. Post-processing inkml for random-access navigation of voluminous handwritten ink documents. In Proceedings of the Thirteenth International World Wide Web Conference (WWW 2004), pages 266--267, New York, USA. ACM Press. May 2004.
86. L. Belenkaia, K. A. Mohamed, Th. Ottmann. Creation, presentation, capture, and replay of freehand writings in e-lecture scenarios. In Lorenzo Cantoni and Catherine McLoughlin (editors), Proceedings of the AACE World Conference on Educational Multimedia, Hypermedia & Telecommunications (ED-MEDIA 2004), pages 791--796, Lugano, Switzerland. AACE press. Jun. 2004.
87. W. Hürst, R. Müller, Th. Ottmann. The AOF Method for Production, Use, and Management of Instructional Media. In Proceedings of ICCE 2004, International Conference on Computers in Education, Melbourne, Australia. Dec. 2004.
88. K. A. Mohamed, Th. Ottmann. Pen-based digital screen interaction. In Claude Ghaoui, editor(s), Encyclopedia of Human Computer Interaction. Idea Group Reference. Apr. 2005.
89. K. A. Mohamed, Th. Ottmann. Overcoming hard-to-reach toolboxes with on-demand menu options for cascading electronic whiteboards in classrooms. In The 13th International Conference on Computers in Education (ICCE2005), Singapore. Nov. 2005.
90. M. Krebs, T. Lauer, Th. Ottmann, S. Trahasch. Student-built algorithm visualizations for assessment: Flexible generation, feedback and grading. In Proceedings of 10th Annual Conference on Innovation and Technology in Computer Science Education (ITiCSE 2005), Monte de Caparica, Portugal. ACM Press. Jun. 2005.
91. Th. Ottmann, S. Trahasch. Multimediale Vorlesungsaufzeichnungen und netzbasierte Übungen. In B. Lehmann and E. Bloh, editor(s), Online-Pädagogik, Bd. 3: Referenzmodelle und Praxisbeispiele. Schneider. May. 2005.
92. W. Hürst, K. A. Mohamed, Th. Ottmann. HCI aspects for pen-based computers in classrooms and lecture halls. In 11th International Conference on Human-Computer Interaction (HCI International 2005), Las Vegas, Nevada, USA, Lawrence Erlbaum Associates, Inc. Jul. 2005.
93. Ch. Hermann, Th. Ottmann . StuVa - Werkzeugunterstützte Studienverlaufsanalyse zur Unterstützung der Studienberatung. In LNI HDI 2006: Hochschuldidaktik der Informatik, pages 127-135, München, Dec. 2006. Gesellschaft für Informatik. 2006.
94. K. A. Mohamed, S. Haag, J. Peltason, F. Dal-Ri, Th. Ottmann. Disoriented pen-gestures for identifying users around the tabletop without cameras and motion sensors. In The First IEEE International Workshop on Horizontal Interactive Human-Computer Systems (TableTop06), pages 43-50, Adelaide, Australia, IEEE Computer Society. Jan. 2006.
95. Ch. Maindorfer, K. A. Mohamed, T. Ottmann, A. Datta. A new output-sensitive algorithm to detect and resolve conflicts in internet router tables. In Proceedings of the 26th Annual IEEE Conference on Computer Communications (IEEE INFOCOM 2007), May. 2007. IEEE Computer Society. 2007.
96. K. A. Mohamed, Thomas Ottmann. Active-smoothing in digital ink environments. In EMME 07: Proceedings of the International Workshop on Educational Multimedia and Multimedia Education, pages 119-120, Augsburg, Germany, Sep. 2007. ACM. 2007.
97. Ch. Maindorfer, B. Bär, Th. Ottmann. Relaxed Min-Augmented Range Trees for the Representation of Dynamic IP Router Tables. In: Proceedings IEEE Symposium on Computers and Communications (ISCC'08), July 6 - 9, 2008, Marrakech, Morocco 2008.
98. K. A. Mohamed, T. Langner, Th. Ottmann. Versioning Tree Structures by Path-Merging. In: Proceedings of the The Second International Frontiers of Algorithmics Workshop (FAW 2008), Changsha, China, June 19-21, 2008, LNCS vol. 5059, pages 101-112 2008.
99. Th. Ottmann. Von Menschen und Computern: Über mehr als 10 Jahre Erfahrungen mit Präsentationsaufzeichnungen an Universitäten. In: Wissen, Vernetzung, Virtualisierung, H.O. von Kortzfleisch, O. Bohl (Hrsg.), Eul Verlag, Köln, pages 175-186 2008.
100. Th. Ottmann, Ch. Hermann, Ch. Heumann. Accreditation practice for degree programs in Computer Science: Experience gained at a classical research university in Germany. In: ACM – IFIP Informatics Education Europe III, Proceedings, December 4-5 2008-09-22 Venice, Italy, pages 17-29 2008.
101. Ch. Maindorfer, T. Lauer, Th. Ottmann. New data structures for ip lookup and conflict detection. In: Algorithmics of Large and Complex Networks. Springer LNCS 5515, Lerner, Jürgen; Wagner, Dorothea; Zweig, Katharina (Eds.), 2009.
102. Th. Ottmann. Quality Assurance of Degree Programs in the Field of Computing by Peer Review in Developing Countries. In: Proceedings 9th International Conference on Information Technology Based Higher Education and Training (ITHET 2010), Cappadocia, TURKEY, IEEE Xplore, pp. 86 – 90
103. K. A. Mohamed and Th. Ottmann. Maintaining the Personal Style and Flair of Handwriting in Presentation Recordings. To appear in: A Rainbow of Computer Science, (dedicated to Hermann Maurer), edited by C. Calude, G. Rozenberg, and A. Salomaa, Springer LNCS 2011


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