Publikationen
Artikel
Forschungsartikel (Zeitschriften)
- . (). Adaptive Approximation of Persistent Homology. Journal of Applied and Computational Topology. [accepted / in Press (not yet published)]
- 10.1016/j.invent.2022.100521. (). A smartphone app for the prevention and early intervention of body dysmorphic disorder: Development and evaluation of the content, usability, and aesthetics. . Internet Interventions, 28(100521). doi:
- . (). Through (Tracking) Their Eyes: Abstraction and Complexity in Program Comprehension. ACM Transactions on Computing Education, 22(2), 17.1–17.33. doi: 10.1145/3480171.
- . (). Approximate Shortest Distances Among Smooth Obstacles in 3D. Journal of Computational Geometry, 10(1), 390–422. doi: 10.20382/jocg.v10i1a13.
- . (). Reprint: An Instrument to Assess Self-Efficacy in Introductory Algorithms Courses. ACM Inroads, 9(1), 56–65. doi: 10.1145/3105726.3106171.
- . (). Deviation Maps for Robust and Informed Indoor Positioning Services. SIGSPATIAL Special, 9(1), 27–34. doi: 10.1145/3124104.3124110.
- . (). Subquadratic Medial-Axis Approximation in R^3. Journal of Computational Geometry, 6(1), 249–287. doi: 10.20382/jocg.v6i1a11.
- . (). Computer Science Education in North-Rhine Westphalia, Germany – A Case Study. ACM Transactions on Computing Education, 15(2). doi: 10.1145/2716313.
- . (). Developing and Validating Test Items for First-Year Computer Science Courses. Computer Science Education, 24(4), 304–333. doi: 10.1080/08993408.2014.970782.
- . (). Approximating Geodesic Distances on 2-Manifolds in R^3: The Weighted Case. Computational Geometry: Theory & Applications, 47(8), 789–808. doi: 10.1016/j.comgeo.2014.04.003.
- . (). Approximating Geodesic Distances on 2-Manifolds in R^3. Computational Geometry: Theory & Applications, 47(2), 125–140. doi: 10.1016/j.comgeo.2012.05.001.
- . (). Addressing the Full Range of Students: Challenges in K-12 Computer Science Education . IEEE Computer, 46(9), 32–37. doi: 10.1109/MC.2013.263.
- . (). Resilient K-d Trees: K-Means in Space Revisited. Frontiers of Computer Science, 6(2), 166–178. doi: 10.1007/s11704-012-2870-8.
- . (). Pruning Spanners and Constructing Well-Separated Pair Decompositions in the Presence of Memory Hierarchies. Journal of Discrete Algorithms, 8(2), 259–272. doi: 10.1016/j.jda.2010.03.001.
- . (). In-Place Algorithms for Computing (Layers of) Maxima. Algorithmica, 57(1), 1–21. doi: 10.1007/s00453-008-9193-z.
- . (). On the Complexity of Computing the Hypervolume Indicator. IEEE Transactions on Evolutionary Computation, 13(5), 1075–1082. doi: 10.1109/TEVC.2009.2015575.
- . (). TerraCost: A Versatile and Scalable Approach to Computing Least-Cost-Path Surfaces for Massive Grid-Based Terrains. ACM Journal of Experimental Algorithmics, 12. doi: 10.1145/1227161.1370600.
- . (). An In-Place Algorithm for Klee's Measure Problem in Two Dimensions. Information Processing Letters, 102(4), 169–174. doi: 10.1016/j.ipl.2006.12.004.
- . (). Line-Segment Intersection Made In-Place. Computational Geometry: Theory & Applications, 38(3), 213–230. doi: 10.1016/j.comgeo.2006.09.001.
- . (). Space-Efficient Geometric Divide-and-Conquer Algorithms. Computational Geometry: Theory & Applications, 37(3), 209–227. doi: 10.1016/j.comgeo.2006.03.006.
- . (). I/O-Efficient Dynamic Planar Point Location. Computational Geometry: Theory & Applications, 29(2), 147–162. doi: 10.1016/j.comgeo.2003.04.001.
- . (). Planar Point Location for Large Data Sets: To Seek or Not To Seek. ACM Journal of Experimental Algorithmics, 7, Article 8. doi: 10.1145/944618.944626.
- . (). Spatio-Temporal Patterns of Neuronal Activity: Analysis of Optical Imaging Data Using Geometric Shape Matching. Journal of Neuroscience Methods, 114(1), 17–23. doi: 10.1016/S0165-0270(01)00504-0.
- . (). Efficient Bulk Operations on Dynamic R-trees. Algorithmica, 33(1), 104–128. doi: 10.1007/s00453-001-0107-6.
- . (). Reporting Intersecting Pairs of Convex Polytopes in Two and Three Dimensions. Computational Geometry: Theory & Applications, 23(2), 195–207. doi: 10.1016/S0925-7721(02)00049-4.
Forschungsartikel in Sammelbänden (Konferenzen)
- . (). Recognizing Patterns in Productive Failure. In (Eds.): Proceedings of the 55th ACM Technical Symposium on Computer Science Education V. 1 , pp. 1293–1299. New York, NY: ACM Press. doi: 10.1145/3626252.3630915.
- . (). "In the Beginning, I Couldn't Necessarily Do Anything With It": Links Between Compiler Error Messages and Sense of Belonging. In (Eds.): Proceedings of the 2024 ACM Conference on International Computing Education Research (ICER 2024) , pp. 14–26. New York, NY: ACM Press. doi: 10.1145/3632620.3671105.
- . (). Regulation, Self-Efficacy, and Participation in CS1 Group Work. In (Eds.): Proceedings of the 2024 ACM Conference on International Computing Education Research (ICER 2024) , pp. 359–373. New York, NY: ACM Press. doi: 10.1145/3632620.3671115.
- . (). Optimal Offline ORAM with Perfect Security via Simple Oblivious Priority Queues. In (Eds.): Proceedings of the 35th International Symposium on Algorithms and Computation (ISAAC 2024) Dagstuhl Publishing. [accepted / in Press (not yet published)]
- . (). Exploring Barriers in Productive Failure. In (Eds.): Proceedings of the 19th ACM Conference on International Computing Education Research (ICER 2023), Vol. I , pp. 284–297. New York, NY: ACM Press. doi: 10.1145/3568813.3600111.
- . (). How Do Computing Education Researchers Talk About Threats and Limitations? In (Eds.): Proceedings of the 19th ACM Conference on International Computing Education Research (ICER 2023), Vol. I , p. 381. New York, NY: ACM Press. doi: 10.1145/3568813.3600114.
- . (). Toward CS1 Content Subscales: A Mixed-Methods Analysis of an Introductory Computing Assessment. In (Eds.): Proceedings of the 23rd Koli Calling International Conference on Computing Education Research (Koli Calling 2023) , pp. 1–13. New York, NY: ACM Press. doi: 10.1145/3631802.3631828.
- . (). Arguments for and Approaches to Computing Education in Undergraduate Computer Science Programmes. In (Eds.): Proceedings of the 2023 Working Group Reports on Innovation and Technology in Computer Science Education (ITiCSE-WGR 2023) , pp. 160–195. New York, NY: ACM Press. doi: 10.1145/3623762.3633494.
- . (). Piecing Together the Next 15 Years of Computing Education Research Workshop Report. In (Eds.): Proceedings of the 53rd ACM Technical Symposium on Computer Science Education , pp. 1051–1052. New York, NY: ACM Press. doi: 10.1145/3478432.3499037.
- . (). Klee’s Measure Problem Made Oblivious. In (Eds.): LATIN 2022: Theoretical Informatics, 15th Latin American Symposium, Guanajuato, Mexico, November 7–11, 2022, Proceedings , pp. 121–138. Cham: Springer. doi: 10.1007/978-3-031-20624-5_8.
- . (). K-Means for Semantically Enriched Trajectories. In (Eds.): Proceedings of the 1st ACM SIGSPATIAL International Workshop on Animal Movement Ecology and Human Mobility (HANIMOB'21) , pp. 38–47. New York, NY: ACM Press. doi: 10.1145/3486637.3489495.
- . (). Exploring Algorithm Comprehension: Linking Proof and Program Code. In (Eds.): Proceedings of the 21st Koli Calling International Conference on Computing Education Research (Koli Calling 2021) , pp. 28:1–28:10. doi: 10.1145/3488042.3488061.
- . (). Oblivious Median Slope Selection. In (Eds.): Proceedings of the 33rd Canadian Conference on Computational Geometry , pp. 320–331.
- . (). Is Algorithm Comprehension Different from Program Comprehension? In (Eds.): Proceedings of the 2021 IEEE/ACM 29th International Conference on Program Comprehension (ICPC) , pp. 455–466. Los Alamitos, CA: Wiley-IEEE Computer Society Press. doi: 10.1109/ICPC52881.2021.00053.
- . (). The Cambridge Handbook of Computing Education Research Summarized in 75 Minutes. In (Eds.): Proceedings of the 51st ACM Technical Symposium on Computer Science Education , pp. 323–324. New York, NY: ACM Press. doi: 10.1145/3328778.3366988.
- . (). Critical Incidents in K-12 Computer Science Classrooms - Towards Vignettes for Computer Science Teacher Training. In (Eds.): Proceedings of the 51st ACM Technical Symposium on Computer Science Education , pp. 978–984. New York, NY: ACM Press. doi: 10.1145/3328778.3366926.
- . (). Revisiting Self-Efficacy in Introductory Programming. In (Eds.): ICER '20: Proceedings of the 2020 ACM Conference on International Computing Education Research , pp. 158–169. New York, NY: ACM Press. doi: 10.1145/3372782.3406281.
- . (). Mapping the Landscape of Peer Review in Computing Education Research. In (Eds.): ITiCSE-WGR '20: Proceedings of the Working Group Reports on Innovation and Technology in Computer Science Education , pp. 173–209. New York, NY: ACM Press. doi: 10.1145/3437800.3439207.
- . (). Inferring Semantically Enriched Representative Trajectories. In (Ed.) 1st ACM SIGSPATIAL International Workshop on Computing with Multifaceted Movement Data (MOVE++ 2019), Chicago, IL, USA , p. Article 3. doi: 10.1145/3356392.3365220.
- . (). The CECE Report: Creating a Map of Informatics in European Schools. In (Eds.): Proceedings of the 49th ACM Technical Symposium on Computer Science Education , pp. 916–917. New York, NY: ACM Press. doi: 10.1145/3159450.3159633.
- . (). Self-Efficacy, Cognitive Load, and Emotional Reactions in Collaborative Algorithms Labs - A Case Study. In (Eds.): Proceedings of the 14th International Computing Education Research Conference (ICER 2018) , pp. 1–10. New York: ACM Press. doi: 10.1145/3230977.3230980.
- . (). Undergraduate Teaching Assistants in Computer Science: Teaching-Related Beliefs, Tasks, and Competences. In (Eds.): Proceedings of the IEEE Global Engineering Education Conference (EDUCON) , pp. 718–725. Wiley-IEEE Press. doi: 10.1109/EDUCON.2017.7942927.
- . (). Bulk-Loading an Index for Temporally Overlaying Spatio-Textual Trajectories. In (Eds.): Proceedings of the 6th ACM SIGSPATIAL Workshop on Analytics for Big Geospatial Data (BigSpatial 2017) , pp. 1–10. New York, NY: ACM Press. doi: 10.1145/3150919.3150922.
- . (). A Filter-and-Refinement-Algorithm for Range Queries Based on the Fréchet Distance (GIS Cup). In Proceedings of the 25th ACM SIGSPATIAL International Conference in Geographic Information Systems (SIGSPATIAL 2017) , pp. 100.1–100.4. New York: ACM Press. doi: 10.1145/3139958.3140063.
- . (). An Instrument to Assess Self-Efficacy in Introductory Algorithms Courses. In (Eds.): Proceedings of the thirteenth annual ACM International Computing Education Research (ICER) conference , pp. 217–225. New York, NY: ACM Press. doi: 10.1145/3105726.3106171.
- . (). Kompetenzbasierte Gestaltungsempfehlungen für Informatik-Tutorenschulungen. In (Hrsg.): INFORMATIK 2017 , S. 241–254. Bonn: Gesellschaft für Informatik. doi: 10.18420/in2017_18.
- . (). Stay on These Roads: Potential Factors Indicating Students' Performance in a CS2 Course. In (Eds.): Proceedings of the 47th ACM Technical Symposium on Computer Science Education (SIGCSE 2016) , pp. 12–17. New York: ACM Press. doi: 10.1145/2839509.2844591.
- . (). Deviation Maps - Enhancing Robustness and Predictability of Indoor Positioning Systems. In (Eds.): Proceedings of the 5th ACM SIGSPATIAL International Workshop on Mobile Geographic Information Systems (MobiGIS 2016) , pp. 88–91. New York: ACM Press. doi: 10.1145/3004725.3004727.
- . (). Approximate Shortest Distances Among Smooth Obstacles in 3D. In (Ed.): Proceedings of the 27th International Symposium on Algorithms and Computation , pp. 60:1–60:13. Dagstuhl Publishing. doi: 10.4230/LIPIcs.ISAAC.2016.60.
- . (). Back to School: Computer Science Unplugged in the Wild. In (Eds.): Proceedings of the 21th Annual Conference on Innovation and Technology in Computer Science Education (ITiCSE 2016) , pp. 118–123. New York, NY: ACM Press. doi: 10.1145/2899415.2899442.
- . (). Making Sense of Trajectory Data in Indoor Spaces . In (Eds.): Proceedings of the 16th IEEE International Conference on Mobile Data Management , pp. 116–121. Wiley-IEEE Press. doi: 10.1109/MDM.2015.44.
- . (). The CS Concept Inventory Quiz Show. In (Eds.): Proceedings of the 46th SIGCSE Technical Symposium on Computer Science Education (SICGSE 2015) , pp. 669–670. ACM Press. doi: 10.1145/2676723.2677315.
- . (). Diagnose und individuelle Förderung (im Informatik-Unterricht). In (Hrsg.): Informatik erweitert Horizonte: 15. GI-Fachtagung Informatik und Schule , S. 23. Bonn: Köllen.
- . (). Approximating Weighted Geodesic Distances in R^3. In (Eds.): Proceedings of the 29th European Workshop on Computational Geometry , pp. 107–110.
- . (). Research-Based Learning Revisited: On Using a Delphi Process in Informatics Teacher Education. In (Eds.): Proceedings of the 6th Conference on Informatics in Schools: Situation, Evolution and Perspectives (ISSEP 2013) , pp. 196–208. Berlin: Springer. doi: 10.1007/978-3-642-36617-8_17.
- . (). On Plugging "Unplugged" into CS Classes. In (Eds.): Proceedings of the 44th SIGCSE Technical Symposium on Computer Science Education (SICGSE 2013) , pp. 365–370. ACM Press. doi: 10.1145/2445196.2445303.
- . (). Hunting High and Low: Instruments to Detect Misconceptions Related to Algorithms and Data Structures. In (Eds.): Proceedings of the 44th SIGCSE Technical Symposium on Computer Science Education (SICGSE 2013) , pp. 29–34. ACM Press. doi: 10.1145/2445196.2445212.
- . (). On the Importance of Being Earnest: Challenges in Computer Science Education. In (Eds.): Proceedings of the 7th Workshop in Primary and Secondary Computing Education , pp. 3–4. New York, NY, USA: ACM Press. doi: 10.1145/2481449.2481452.
- . (). Revisiting the Construction of SSPDs in the Presence of Memory Hierarchies. In (Eds.): 28th European Workshop on Computational Geometry, Booklet of Abstracts , pp. 57–60.
- . (). Simplified Medial-Axis Approximation with Guarantees. In (Eds.): 28th European Workshop on Computational Geometry, Booklet of Abstracts , pp. 161–164.
- . (). On the Space-Efficiency of the "Ultimate Planar Convex Hull Algorithm". In (Eds.): 24th Canadian Conference on Computational Geometry , pp. 139–144.
- . (). Reflections on outreach programs in CS classes: learning objectives for ''Unplugged'' activities. In (Eds.): Proceedings of the 43rd SIGCSE Technical Symposium on Computer Science Education (SICGSE 2012) , pp. 487–492. ACM Press. doi: 10.1145/2157136.2157281.
- . (). Design and Evaluation of a Braided Teaching Course in Sixth Grade Computer Science Education. In (Eds.): Proceedings of the 43rd SIGCSE Technical Symposium on Computer Science Education (SICGSE 2012) , pp. 45–50. ACM Press. doi: 10.1145/2157136.2157154.
- . (). Of Motifs and Goals: Mining Trajectory Data. In (Eds.): Proceedings of the 20th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (ACM SIGSPATIAL GIS 2012) , pp. 129–138. doi: 10.1145/2424321.2424339.
- . (). Detecting and Understanding Students' Misconceptions Related to Algorithms and Data Structures. In (Eds.): Proceedings of the 43rd SIGCSE Technical Symposium on Computer Science Education (SICGSE 2012) , pp. 21–26. ACM Press. doi: 10.1145/2157136.2157148.
- . (). Learning a 2-Manifold with a Boundary in R^3. In (Ed.): Abstracts from EuroCG 2011, 27th European Workshop on Computational Geometry , pp. 213–216.
- . (). On Misconceptions and Implementing 'A Class Defines a Data Type'. In (Eds.): Proceedings of Selected Papers of the 5th International Conference on Informatics in Schools: Situation, Evolution and Perspectives (ISSEP 2011).
- . (). Approximating Geodesic Distances on 2-Manifolds in R^3. In (Eds.): Proceedings of the 23rd Canadian Conference on Computational Geometry (CCCG 2011) , pp. 325–330.
- . (). Professional Associations in K-12 Computer Science. In (Eds.): Proceedings of the 15th Annual Conference on Innovation and Technology in Computer Science Education (ITiCSE 2010) , pp. 329–330. New York City: ACM Press. doi: 10.1145/1822090.1822207.
- . (). Implementing CS Curricula in Secondary Education: An International Perspective. In Proceedings of the 40th Annual Frontiers in Education Conference (FIE 2010) , pp. T2B–1–T2B–3. Wiley-IEEE Computer Society Press. doi: 10.1109/FIE.2010.5673370.
- . (). Braided Teaching in Secondary CS Education: Contexts, Continuity, and the Role of Programming. In (Eds.): Proceedings of the 41st SIGCSE Technical Symposium on Computer Science Education (SICGSE 2010) , pp. 204–208. ACM Press. doi: 10.1145/1734263.1734336.
- . (). Resilient K-d Trees: K-Means in Space Revisited. In Proceedings of the 10th IEEE International Conference on Data Mining (ICDM 2010) , pp. 815–820. Wiley-IEEE Computer Society Press. doi: 10.1109/ICDM.2010.94.
- . (). Detecting Quasars in Large-Scale Astronomical Surveys. In Proceedings of the Ninth International Conference on Machine Learning and Applications (ICMLA 2010) , pp. 352–357. Wiley-IEEE Computer Society Press. doi: 10.1109/ICMLA.2010.59.
- . (). Cache-Oblivious Construction of a Well-Separated Pair Decomposition. In (Ed.): Proceedings of the 25th European Workshop on Computational Geometry , pp. 341–344.
- . (). Rote Fäden zur Kontextorientierung im Informatikunterricht. In (Hrsg.): Informatische Bildung in Theorie und Praxis, 13. GI-Fachtagung - Informatik und Schule (INFOS 2009) , S. 45–56. LOG IN Verlag.
- . (). Query Responsive Index Structures. In (Eds.): Proceedings of the Fifth International Conference on Geographic Information Science (GIScience 2008) , pp. 1–19. Berlin: Springer. doi: 10.1007/978-3-540-87473-7_1.
- . (). Generating Optimized Marker-based Rigid Bodies for Optical Tracking. In (Eds.): Proceedings of the Second International Conference on Computer Vision Theory and Applications (VISAPP 2007) , pp. 387–395. INSTICC.
- . (). Performance Improvement for Optical Tracking by Adapting Marker Arrangements. In (Ed.): Proceedings of the VR Workshop on Trends and Issues in Tracking for Virtual Environments , pp. 28–33. Shaker Verlag.
- . (). Illustrating Dynamics of Time-Varying Volume Datasets in Static Images. In (Eds.): Proceedings of the 11th International Fall Workshop on Vision, Modeling, and Visualization (VMV 2006) , pp. 333–340. Berlin: Akademische Verlagsgesellschaft.
- . (). Modeling and Engineering Algorithms for Mobile Data. In Progress in Spatial Data Handling, 12th International Symposium on Spatial Data Handling , pp. 61–77. Berlin: Springer. doi: 10.1007/3-540-35589-8_5.
- . (). In-Place Randomized Slope Selection. In (Eds.): 22nd European Conference on Computational Geometry , pp. 177–180.
- . (). In-Place Algorithms for Computing (Layers of) Maxima. In (Eds.): 22nd European Conference on Computational Geometry , pp. 181–184.
- . (). TerraCost: A Versatile and Scalable Approach to Computing Least-Cost-Path Surfaces for Massive Grid-Based Terrains. In Proceedings of the 21th Annual ACM Symposium on Applied Computing (SAC '06) , pp. 52–57. New York: ACM Press. doi: 10.1145/1141277.1141290.
- . (). In-Place Randomized Slope Selection. In (Eds.): Proceedings of the 6th Conference on Algorithms and Complexity (CIAC 2006) , pp. 31–40. Berlin: Springer. doi: 10.1007/11758471_6.
- . (). In-Place Algorithms for Computing (Layers of) Maxima. In (Eds.): Proceedings of the 10th Scandinavian Workshop on Algorithm Theory (SWAT 2006) , pp. 363–374. Berlin: Springer. doi: 10.1007/11785293_34.
- . (). Line-Segment Intersection Made In-Place. In (Eds.): Proceedings of the Ninth International Workshop on Algorithms and Data Structures (WADS 2005) , pp. 146–157. Berlin: Springer. doi: 10.1007/11534273_14.
- . (). I/O-Efficiently Pruning Dense Spanners. In (Eds.): Revised Selected Papers of the Japanese Conference on Discrete and Computational Geometry (JCDCG 2004) , pp. 106–116. Berlin: Springer. doi: 10.1007/11589440_11.
- . (). A Framework for Representing Moving Objects. In (Eds.): Proceedings of the 15th International Conference on Database and Expert Systems Applications (DEXA 2004) , pp. 854–863. Berlin: Springer. doi: 10.1007/978-3-540-30075-5_82.
- . (). I/O-Efficiently Pruning Dense Spanners. In (Eds.): Japan Conference on Discrete and Computational Geometry, JCDCG 2004, A Conference in Honor of János Pach on his 50th Year , pp. 35–36.
- . (). Space-Efficient Geometric Divide-and-Conquer Algorithms. In (Eds.): 20th European Workshop on Computational Geometry, Abstracts , pp. 65–68.
- . (). Ein Rahmenwerk zur Repräsentation von sich bewegenden Objekten. In (Hrsg.): Beitragsband zum Workshop "Grundlagen und Anwendungen mobiler Informationstechnologie" des GI-Arbeitskreises Mobile Datenbanken und Informationssysteme , S. 3–12.
- . (). Verarbeitung von Trajektorien mobiler Objekte. In (Hrsg.): Geoinformation und Mobilität - von der Forschung zur praktischen Anwendung. Beiträge zu den Münsteraner GI-Tagen 2004 , S. 29–41.
- . (). An XML- and Log-Based Infrastructure For Evaluating And Teaching Spatio-Temporal Indexing Schemes. In Database and Expert Systems Applications, 2004. Proceedings. 15th International Workshop on , pp. 851–855. Wiley-IEEE Press. doi: 10.1109/DEXA.2004.1333583.
- . (). On Reverse Nearest Neighbor Queries (Extended Abstract). In (Ed.): Proceedings of the 14th Canadian Conference on Computational Geometry , pp. 128–132.
- . (). Time-Responsive External Data Structures for Moving Points. In (Eds.): Proceedings of the Seventh International Workshop on Algorithms and Data Structures (WADS 2001) , pp. 50–61. Berlin: Springer. doi: 10.1007/3-540-44634-6_6.
- . (). Reporting Intersecting Pairs of Polytopes in Two and Three Dimensions. In (Eds.): Proceedings of the Seventh International Workshop on Algorithms and Data Structures (WADS 2001) , pp. 122–134. Berlin: Springer. doi: 10.1007/3-540-44634-6_12.
- . (). Planar Point Location for Large Data Sets: To Seek or Not to Seek. In (Eds.): Algorithm Engineering, 4th International Workshop, WAE 2000 , pp. 183–194. Berlin: Springer. doi: 10.1007/3-540-44691-5_16.
- . (). A Unified Approach for Indexed and Non-Indexed Spatial Joins. In (Eds.): Advances in Database Technology - EDBT 2000, 7th International Conference on Extending Database Technology , pp. 413–429. Berlin: Springer. doi: 10.1007/3-540-46439-5_29.
- . (). A Unified Approach For Indexed and Non-Indexed Spatial Joins. In (Eds.): Advances in Database Technology - Proceedings of the 7th International Conference on Extending Databases Technology (EDBT '00) , pp. 413–429. Berlin: Springer. doi: 10.1007/3-540-46439-5_29.
- . (). I/O-Efficient Dynamic Planar Point Location (Extended Abstract). In SCG '00: Proceedings of the Sixteenth Annual Symposium on Computational Geometry , pp. 191–200. New York: ACM Press. doi: 10.1145/336154.336205.
- . (). Algorithms for Performing Map Overlay and Spatial Join for Massive Data Sets. In (Eds.): Advances in Spatial Databases - Proceedings of the Sixth International Symposium on Spatial Databases (SSD '99) , pp. 270–285. Berlin: Springer. doi: 10.1007/3-540-48482-5_17.
- . (). Efficient Bulk Operations on Dynamic R-trees (extended abstract). In (Eds.): Algorithm Engineering and Experimentation, International Workshop ALENEX '99 , pp. 328–347. Berlin: Springer. doi: 10.1007/3-540-48518-X_20.
Buchbeiträge
Forschungsartikel (Buchbeiträge)
- . (). Das systematische Vorgehen im Fokus. In (Hrsg.), Wirksamer Informatikunterricht. Unterrichtsqualität: Perspektiven von Expertinnen und Experten (S. 198–206). Baltmannsweiler: Schneider Verlag Hohengehren.
- . (). Unterschiede im Leseverhalten von Algorithmen und Programmen. In (Hrsg.), Eye-Tracking als Methode in der Mathematik- und Naturwissenschaftsdidaktik: Forschung und Praxis (S. 245–260). Heidelberg: Springer Spektrum. doi: 10.1007/978-3-662-63214-7_15.
- . (). Kompetenzen im Bereich ‚Computational Thinking‘ von Schülerinnen und Schülern im internationalen Vergleich. In (Hrsg.), ICILS 2018 #NRW. Vertiefende Analysen und Befunde für Nordrhein-Westfalen im internationalen Vergleich (S. 201–214). Münster: Waxmann.
- . (). Der Informatikunterricht aus Sicht schulischer Akteurinnen und Akteure - Analysen und Perspektiven. In (Hrsg.), ICILS 2018 #NRW. Vertiefende Analysen und Befunde für Nordrhein-Westfalen im internationalen Vergleich (S. 137–154). Münster: Waxmann.
- . (). Der Kompetenzbereich ‚Computational Thinking‘: erste Ergebnisse des Zusatzmoduls für Deutschland im internationalen Vergleich. In (Hrsg.), ICILS 2018 #Deutschland – Computer- und informationsbezogene Kompetenzen von Schülerinnen und Schülern im zweiten internationalen Vergleich und Kompetenzen im Bereich Computational Thinking (S. 367–398). Münster: Waxmann.
- . (). Das Konstrukt der computer- und informationsbezogenen Kompetenzen und das Konstrukt der Kompetenzen im Bereich ‚Computational Thinking‘ in ICILS 2018. In (Hrsg.), ICILS 2018 #Deutschland – Computer- und informationsbezogene Kompetenzen von Schülerinnen und Schülern im zweiten internationalen Vergleich und Kompetenzen im Bereich Computational Thinking (S. 79–111). Münster: Waxmann.
- . (). Student Knowledge and Misconceptions. In (Eds.), The Cambridge Handbook of Computing Education Research (pp. 773–800). Cambridge: Cambridge University Press. doi: 10.1017/9781108654555.028.
- . (). Schools (K-12). In (Eds.), The Cambridge Handbook of Computing Education Research (pp. 547–583). Cambridge: Cambridge University Press. doi: 10.1017/9781108654555.019.
- . (). CS Unplugged—How Is It Used, and Does It Work? In (Eds.), Adventures Between Lower Bounds and Higher Altitudes - Essays Dedicated to Juraj Hromkovič on the Occasion of His 60th Birthday (pp. 497–521). Cham: Springer VDI Verlag. doi: 10.1007/978-3-319-98355-4_29.
- . (). Vermittlung informatischer Grundbildung im Unterricht der Sekundarstufe I im Bundesländervergleich. In (Hrsg.), Schule digital - der Länderindikator 2017. Schulische Medienbildung in der Sekundarstufe I mit besonderem Fokus auf MINT-Fächer im Bundesländervergleich und Trends von 2015 bis 2017 (S. 205–230). Münster: Waxmann.
- . (). Entwurf eines Diagnosekonzepts für die Sekundarstufe I am Beispiel des Fachs Informatik. In (Hrsg.), Diagnose und individuelle Förderung in der MINT-Lehrerbildung: Das Projekt dortMINT (S. 101–114). Münster: Waxmann.
- . (). Diagnose und individuelle Förderung erlernen. In (Hrsg.), Diagnose und individuelle Förderung in der MINT-Lehrerbildung: Das Projekt dortMINT (S. 97–100). Münster: Waxmann.
- . (). B-Trees. In (Ed.), Encyclopedia of Algorithms (pp. 108–112). Berlin: Springer VDI Verlag. doi: 10.1007/978-0-387-30162-4_57.
- . (). External Memory Computational Geometry Revisited. In (Eds.), Algorithms for Memory Hierarchies (pp. 110–148). Berlin: Springer VDI Verlag. doi: 10.1007/3-540-36574-5_6.
Lexikonartikel (Buchbeiträge)
- . (). B-Trees. In (Ed.), Encyclopedia of Algorithms (2. Aufl. , pp. 1–8). New York: Springer Science+Business Media. doi: 10.1007/978-3-642-27848-8_57-2.
- . (). Polygon Triangulation. In (Ed.), Encyclopedia of Algorithms (2. Aufl. , pp. 1–5). New York: Springer Science+Business Media. doi: 10.1007/978-3-642-27848-8_506-1.
Arbeitspapiere / Working Papers
- . (). Notional Machines and Programming Language Semantics in Education (Dagstuhl Seminar 19281). (Dagstuhl Reports 9(7)). doi: 10.4230/DagRep.9.7.1.
- . (). Assessing Learning In Introductory Computer Science (Dagstuhl Seminar 16072). (Dagstuhl Reports 6(2)). doi: 10.4230/DagRep.6.2.78.
Herausgegebene Bücher
Fachbücher (Herausgegebene Bücher)
- ICILS 2018 #Deutschland – Computer- und informationsbezogene Kompetenzen von Schülerinnen und Schülern im zweiten internationalen Vergleich und Kompetenzen im Bereich Computational Thinking. Münster: Waxmann. (Hrsg.). ().
- Schule digital – der Länderindikator 2017. Schulische Medienbildung in der Sekundarstufe I mit besonderem Fokus auf MINT-Fächer im Bundesländervergleich und Trends von 2015 bis 2017. Münster: Waxmann. (Hrsg.). ().
Konferenzbände
- 10.1145/3501385. (Eds.). (). ICER 2022: ACM Conference on International Computing Education Research, Lugano and Virtual Event, Switzerland, August 7 - 11, 2022, Volume 1. New York, NY: ACM Press. doi:
- 10.1145/3501709. (Eds.). (). ICER 2022: ACM Conference on International Computing Education Research, Lugano and Virtual Event, Switzerland, August 7 - 11, 2022, Volume 2. New York, NY: ACM Press. doi:
- 10.1145/3446871. (Eds.). (). ICER 2021: Proceedings of the 17th ACM Conference on International Computing Education Research. New York, NY: ACM Press. doi:
- 10.1145/2978249. (Eds.). (). Proceedings of the 11th Workshop in Primary and Secondary Computing Education, WiPSCE 2016, Münster, Germany, October 13-15, 2016. New York, NY: ACM Press. doi:
- 10.1145/2818314. (Eds.). (). Proceedings of the Workshop in Primary and Secondary Computing Education, WiPSCE 2015, London, United Kingdom, November 9-11, 2015. New York, NY: ACM Press. doi:
- 10.1007/978-3-319-25396-1. (Eds.). (). Informatics in Schools. Curricula, Competences, and Competitions. Berlin: Springer VDI Verlag. doi:
- 10.1007/978-3-642-11376-5. (Eds.). (). Teaching Fundamentals Concepts of Informatics. 4th International Conference on Informatics in Secondary Schools - Evolution and Perspectives, ISSEP 2010, Zurich, Switzerland, January 13-15, 2010. Proceedings. Berlin: Springer VDI Verlag. doi:
- 26th European Workshop on Computational Geometry (EuroCG 2010). Proceedings. Dortmund: Selbstverlag / Eigenverlag. (Eds.). ().
- 10.1007/978-3-642-02011-7. (Eds.). (). Experimental Algorithms. 8th International Symposium, SEA 2009. Dortmund, Germany, June 2009. Proceedings. Berlin: Springer VDI Verlag. doi:
- (Eds.). (). Proceedings of the Workshop on Massive Geometric Data Sets (Massive2005). Münster: Selbstverlag / Eigenverlag.
Qualifikationsschriften (Dissertationen, Habilitationsschriften)
- . (). Large-Scale Algorithms and Data Structures for Dynamic and Time-Variant Geometric Problems. (Habilitationsschrift). Westfälische Wilhelms-Universität Münster.
- . (). External Memory Algorithms for Geographic Information Systems. (Dissertationsschrift). Westfälische Wilhelms-Universität Münster.