Clifford A. Shaffer

Edward F. Gehringer, Beth Lang Golub, Randi Cohen, David M. Arnow, Clifford A. Shaffer: Panel: textbook pricing, present and future. SIGCSE 2013: 633-634

Eric Fouh, Daniel Breakiron, Mai Elshehaly, T. Simin Hall, Ville Karavirta, Clifford A. Shaffer: OpenDSA: using an active eTextbook to teach data structures and algorithms (abstract only). SIGCSE 2013: 734

Monika Akbar, Clifford A. Shaffer, Edward A. Fox: Deduced social networks for an educational digital library. JCDL 2012: 43-46

Monika Akbar, Clifford A. Shaffer: User type clustering to refine search and browse for educational resources (abstract only). SIGCSE 2012: 666

Clifford A. Shaffer: Active eTextbooks for CS: what should they be? (abstract only). SIGCSE 2012: 680

Eric Fouh, Maoyuan Sun, Clifford A. Shaffer: OpenDSA: a creative commons active-ebook (abstract only). SIGCSE 2012: 721

Monika Akbar, Weiguo Fan, Clifford A. Shaffer, Yinlin Chen, Lillian N. Cassel, Lois M. L. Delcambre, Daniel D. Garcia, Gregory W. Hislop, Frank M. Shipman III, Richard Furuta, B. Stephen Carpenter II, Hao-wei Hsieh, Bob Siegfried, Edward A. Fox: Digital Library 2.0 for Educational Resources. TPDL 2011: 89-100

Clifford A. Shaffer, Stephen H. Edwards: Scheduling and student performance. ITiCSE 2011: 331

Monika Akbar, Weiguo Fan, Lillian N. Cassel, Lois M. L. Delcambre, Clifford A. Shaffer, Edward A. Fox, Yinlin Chen: How educators find educational resources online. ITiCSE 2011: 367

Clifford A. Shaffer, Monika Akbar, Alexander Joel D. Alon, Michael Stewart, Stephen H. Edwards: Getting algorithm visualizations into the classroom. SIGCSE 2011: 129-134

Clifford A. Shaffer, Matthew L. Cooper, Alexander Joel D. Alon, Monika Akbar, Michael Stewart, Sean Ponce, Stephen H. Edwards: Algorithm Visualization: The State of the Field. TOCE 10(3) (2010)

Ranjit Randhawa, Clifford A. Shaffer, John J. Tyson: Model Composition for Macromolecular Regulatory Networks. IEEE/ACM Trans. Comput. Biology Bioinform. 7(2): 278-287 (2010)

Edward A. Fox, Yinlin Chen, Monika Akbar, Clifford A. Shaffer, Stephen H. Edwards, Peter Brusilovsky, Daniel D. Garcia, Lois M. L. Delcambre, Felicia Decker, David W. Archer, Richard Furuta, Frank M. Shipman III, Stephen Carpenter, Lillian N. Cassel: Ensemble PDP-8: eight principles for distributed portals. JCDL 2010: 341-344

Clifford A. Shaffer, Thomas L. Naps, Susan H. Rodger, Stephen H. Edwards: Building an online educational community for algorithm visualization. SIGCSE 2010: 475-476

Zhen Liu, Umme Juka Mobassera, Clifford A. Shaffer, Layne T. Watson, Yang Cao: Multistate modeling and simulation for regulatory networks. Winter Simulation Conference 2010: 631-642

Ranjit Randhawa, Clifford A. Shaffer, John J. Tyson: Model aggregation: a building-block approach to creating large macromolecular regulatory networks. Bioinformatics 25(24): 3289-3295 (2009)

Tae-Hyuk Ahn, Pengyuan Wang, Layne T. Watson, Yang Cao, Clifford A. Shaffer, William T. Baumann: Stochastic cell cycle modeling for budding yeast. SpringSim 2009

Gabriel A. Wainer, Clifford A. Shaffer, Robert M. McGraw, Michael J. Chinni (Eds.): Proceedings of the 2009 Spring Simulation Multiconference, SpringSim 2009, San Diego, California, USA, March 22-27, 2009. SCS/ACM 2009

Thomas D. Panning, Layne T. Watson, Nicholas Allen, Katherine C. Chen, Clifford A. Shaffer, John J. Tyson: Deterministic parallel global parameter estimation for a model of the budding yeast cell cycle. J. Global Optimization 40(4): 719-738 (2008)

Pengyuan Wang, Ranjit Randhawa, Clifford A. Shaffer, Yang Cao, William T. Baumann: Converting macromolecular regulatory models from deterministic to stochastic formulation. SpringSim 2008: 385-392

Thomas D. Panning, Layne T. Watson, Clifford A. Shaffer, John J. Tyson: A Mathematical Programming Formulation for the Budding Yeast Cell Cycle. Simulation 83(7): 497-514 (2007)

Dhananjay Mishra, Clifford A. Shaffer, Naren Ramakrishnan, Layne T. Watson, Kyung Kyoon Bae, Jian He, Alex Verstak, William H. Tranter: S⁴W: a problem-solving environment for wireless system design. Softw., Pract. Exper. 37(14): 1539-1558 (2007)

Clifford A. Shaffer, Matthew Cooper, Stephen H. Edwards: Algorithm visualization: a report on the state of the field. SIGCSE 2007: 150-154

Ranjit Randhawa, Clifford A. Shaffer, John J. Tyson: Fusing and composing macromolecular regulatory network models. SpringSim (2) 2007: 337-344

Clifford A. Shaffer: Experiences teaching a graduate research methods course. SIGCSE Bulletin 38(2): 97-101 (2006)

Marc Vass, Clifford A. Shaffer, Naren Ramakrishnan, Layne T. Watson, John J. Tyson: The JigCell Model Builder: A Spreadsheet Interface for Creating Biochemical Reaction Network Models. IEEE/ACM Trans. Comput. Biology Bioinform. 3(2): 155-164 (2006)

Clifford A. Shaffer, Ranjit Randhawa, John J. Tyson: The role of composition and aggregation in modeling macromolecular regulatory networks. Winter Simulation Conference 2006: 1628-1636

Herbert M. Sauro, David Harel, Marta Z. Kwiatkowska, Clifford A. Shaffer, Adelinde M. Uhrmacher, Michael Hucka, Pedro Mendes, Lena Strömbäck, John J. Tyson: Challenges for modeling and simulation methods in systems biology. Winter Simulation Conference 2006: 1720-1730

Nicholas Allen, Clifford A. Shaffer, Layne T. Watson: Building modeling tools that support verification, validation, and testing for the domain expert. Winter Simulation Conference 2005: 419-426

Marc Vass, Nicholas Allen, Clifford A. Shaffer, Naren Ramakrishnan, Layne T. Watson, John J. Tyson: The JigCell Model Builder and Run Manager. Bioinformatics 20(18): 3680-3681 (2004)

Roger R. Skidmore, Alex Verstak, Naren Ramakrishnan, Theodore S. Rappaport, Layne T. Watson, Jian He, Srinidhi Varadarajan, Clifford A. Shaffer, Jeremy K.-P. Chen, Kyung Kyoon Bae, Jing Jiang, William H. Tranter: Towards integrated PSEs for wireless communications: experiences with the S⁴W and SitePlanner® projects. Mobile Computing and Communications Review 8(2): 20-34 (2004)

Jian He, Alex Verstak, Layne T. Watson, C. A. Stinson, Naren Ramakrishnan, Clifford A. Shaffer, Theodore S. Rappaport, C. R. Anderson, Kyung Kyoon Bae, Jing Jiang, William H. Tranter: Globally optimal transmitter placement for indoor wireless communication systems. IEEE Transactions on Wireless Communications 3(6): 1906-1911 (2004)

Liya Thomas, Lamine Mili, Clifford A. Shaffer, Ed Thomas: Defect detection on hardwood logs using high resolution three dimensional laser scan data. ICIP 2004: 243-246

Jian He, Masha Sosonkina, Clifford A. Shaffer, John J. Tyson, Layne T. Watson, Jason W. Zwolak: A Hierarchical Parallel Scheme for Global Parameter Estimation in Systems Biology. IPDPS 2004

Clifford A. Shaffer: Buffer pools and file processing projects for an undergraduate data structures course. SIGCSE 2004: 175-178

Purvi Saraiya, Clifford A. Shaffer, D. Scott McCrickard, Chris North: Effective features of algorithm visualizations. SIGCSE 2004: 382-386

E. J. Rubin, Clifford A. Shaffer, Naren Ramakrishnan, Layne T. Watson, Randel L. Dymond, David F. Kibler, R. Dietz, Jeffrey G. Chanat, Vinod Lohani, Darrell Bosch, Cameron Speir: From landscapes to waterscapes: A PSE for landuse change analysis. Eng. Comput. (Lond.) 19(1): 9-25 (2003)

Nicholas Allen, Clifford A. Shaffer, Naren Ramakrishnan, Marc T. Vass, Layne T. Watson: Improving the Development Process for Eukaryotic Cell Cycle Models with a Modeling Support Environment. Simulation 79(12): 674-688 (2003)

Alex Verstak, Naren Ramakrishnan, Layne T. Watson, Jian He, Clifford A. Shaffer, Kyung Kyoon Bae, Jing Jiang, William H. Tranter, Theodore S. Rappaport: BSML: A binding schema markup language for data interchange in problem solving environments. Scientific Programming 11(3): 199-224 (2003)

Nicholas Allen, Clifford A. Shaffer, Marc Vass, Naren Ramakrishnan, Layne T. Watson: Next generation modeling II - applications: improving the development process for eukaryotic cell cycle models with a modeling support environment. Winter Simulation Conference 2003: 782-790

Jian He, Layne T. Watson, Naren Ramakrishnan, Clifford A. Shaffer, Alex Verstak, Jing Jiang, Kyung Kyoon Bae, William H. Tranter: Dynamic Data Structures for a Direct Search Algorithm. Comp. Opt. and Appl. 23(1): 5-25 (2002)

Naren Ramakrishnan, Layne T. Watson, Dennis G. Kafura, Calvin J. Ribbens, Clifford A. Shaffer: Programming environments for multidisciplinary Grid communities. Concurrency and Computation: Practice and Experience 14(13-15): 1241-1273 (2002)

Marc Vass, John M. Carroll, Clifford A. Shaffer: Supporting creativity in problem solving environments. Creativity & Cognition 2002: 31-37

Alex Verstak, Jian He, Layne T. Watson, Naren Ramakrishnan, Clifford A. Shaffer, Theodore S. Rappaport, C. R. Anderson, Kyung Kyoon Bae, Jing Jiang, William H. Tranter: S4W: Globally Optimized Design of Wireless Communications Systems. IPDPS 2002

Alex Verstak, Naren Ramakrishnan, Layne T. Watson, Jian He, Clifford A. Shaffer, Kyung Kyoon Bae, Jing Jiang, William H. Tranter, Theodore S. Rappaport: BSML: A Binding Schema Markup Language for Data Interchange in Problem Solving Environments (PSEs). CoRR cs.CE/0202027 (2002)

Alex Verstak, Naren Ramakrishnan, Kyung Kyoon Bae, William H. Tranter, Layne T. Watson, Jian He, Clifford A. Shaffer, Theodore S. Rappaport: Using Hierarchical Data Mining to Characterize Performance of Wireless System Configurations. CoRR cs.CE/0208040 (2002)

James Begole, Randall B. Smith, Craig A. Struble, Clifford A. Shaffer: Resource sharing for replicated synchronous groupware. IEEE/ACM Trans. Netw. 9(6): 833-843 (2001)

Amit Goel, Constantinos Phanouriou, Frederick A. Kamke, Calvin J. Ribbens, Clifford A. Shaffer, Layne T. Watson: WBCSim: A Prototype Problem Solving Environment for Wood-Based Composites Simulations. Eng. Comput. (Lond.) 15(2): 198-210 (1999)

James Begole, Mary Beth Rosson, Clifford A. Shaffer: Flexible collaboration transparency: supporting worker independence in replicated application-sharing systems. ACM Trans. Comput.-Hum. Interact. 6(2): 95-132 (1999)

Amit Goel, Chuck Baker, Clifford A. Shaffer, Bernard Grossman, Raphael T. Haftka, William H. Mason, Layne T. Watson: VizCraft: A Multidimensional Visualization Tool for Aircraft Configuration Design. IEEE Visualization 1999: 425-428

James Begole, Mary Beth Rosson, Clifford A. Shaffer: Supporting Worker Independence in Collaboration Transparency. ACM Symposium on User Interface Software and Technology 1998: 133-142

Clifford A. Shaffer, Duane L. Knill, Layne T. Watson: Visualization for multiparameter aircraft designs. IEEE Visualization 1998: 491-494

James Begole, Craig A. Struble, Clifford A. Shaffer: Leveraging Java Applets: Toward Collaboration Transparency in Java. IEEE Internet Computing 1(2): 57-64 (1997)

James Begole, Craig A. Struble, Clifford A. Shaffer, Randall B. Smith: Transparent Sharing of Java Applets: A Replicated Approach. ACM Symposium on User Interface Software and Technology 1997: 55-64

Clifford A. Shaffer, Lenwood S. Heath, Jun Yang: Using the Swan data structure visualization system for computer science education. SIGCSE 1996: 140-144

Jun Yang, Clifford A. Shaffer, Lenwood S. Heath: SWAN: A Data Structure Visualization System. Graph Drawing 1995: 520-523

Sriram V. Pemmaraju, Clifford A. Shaffer: Analysis of the Worst Case Space Complexity of a PR Quadtree. Inf. Process. Lett. 49(5): 263-267 (1994)

Clifford A. Shaffer, Ramana Juvvadi, Lenwood S. Heath: Generalized comparison of quadtree and bintree storage requirements. Image Vision Comput. 11(7): 402-412 (1993)

Clifford A. Shaffer, Patrick R. Brown: A Paging Scheme for Pointer-Based Quadtrees. SSD 1993: 89-104

Clifford A. Shaffer, Hanan Samet: Set Operations for Unaligned Linear Quadtrees. Computer Vision, Graphics, and Image Processing 50(1): 29-49 (1990)

Clifford A. Shaffer, Hanan Samet, Randal C. Nelson: QUILT: a geographic information system based on quadtrees†. International Journal of Geographical Information Science 4(2): 103-131 (1990)

Chuan-Heng Ang, Hanan Samet, Clifford A. Shaffer: A New Region Expansion for Quadtrees. IEEE Trans. Pattern Anal. Mach. Intell. 12(7): 682-686 (1990)

Clifford A. Shaffer, Gregory M. Herb: A Real-Time Robot Collision Avoidance System (Abstract). ACM Conference on Computer Science 1990: 441

Clifford A. Shaffer: A Full Resolution Elevation Representation Requiring Three Bits per Pixel. SSD 1989: 45-64

Clifford A. Shaffer, Hanan Samet: Algorithm to expand regions represented by linear quadtrees. Image Vision Comput. 6(3): 162-168 (1988)

Clifford A. Shaffer, Hanan Samet: Optimal quadtree construction algorithms. Computer Vision, Graphics, and Image Processing 37(3): 402-419 (1987)

Hanan Samet, Clifford A. Shaffer, Robert E. Webber: Digitizing the Plane with Cells of Nonuniform Size. Inf. Process. Lett. 24(6): 369-375 (1987)

Hanan Samet, Clifford A. Shaffer: A Model for the Analysis of Neighbor Finding in Pointer-Based Quadtrees. IEEE Trans. Pattern Anal. Mach. Intell. 7(6): 717-720 (1985)

Hanan Samet, Azriel Rosenfeld, Clifford A. Shaffer, Robert E. Webber: A geographic information system using quadtrees. Pattern Recognition 17(6): 647-656 (1984)