2013
68Panel: textbook pricing, present and future. Edward F. Gehringer, Beth Lang Golub, Randi Cohen, David M. Arnow, Clifford A. Shaffer. SIGCSE 2013, 633-634. Web SearchBibTeXDownload
67OpenDSA: using an active eTextbook to teach data structures and algorithms (abstract only). Eric Fouh, Daniel Breakiron, Mai Elshehaly, T. Simin Hall, Ville Karavirta, Clifford A. Shaffer. SIGCSE 2013, 734. Web SearchBibTeXDownload
2012
66Deduced social networks for an educational digital library. Monika Akbar, Clifford A. Shaffer, Edward A. Fox. JCDL 2012, 43-46. Web SearchBibTeXDownload
65Active eTextbooks for CS: what should they be? (abstract only). Clifford A. Shaffer. SIGCSE 2012, 680. Web SearchBibTeXDownload
64OpenDSA: a creative commons active-ebook (abstract only). Eric Fouh, Maoyuan Sun, Clifford A. Shaffer. SIGCSE 2012, 721. Web SearchBibTeXDownload
63User type clustering to refine search and browse for educational resources (abstract only). Monika Akbar, Clifford A. Shaffer. SIGCSE 2012, 666. Web SearchBibTeXDownload
2011
62How educators find educational resources online. Monika Akbar, Weiguo Fan, Lillian N. Cassel, Lois M. L. Delcambre, Clifford A. Shaffer, Edward A. Fox, Yinlin Chen. ITiCSE 2011, 367. Web SearchBibTeXDownload
61Scheduling and student performance. Clifford A. Shaffer, Stephen H. Edwards. ITiCSE 2011, 331. Web SearchBibTeXDownload
60Getting algorithm visualizations into the classroom. Clifford A. Shaffer, Monika Akbar, Alexander Joel D. Alon, Michael Stewart, Stephen H. Edwards. SIGCSE 2011, 129-134. Web SearchBibTeXDownload
59Digital Library 2.0 for Educational Resources. 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. TPDL 2011, 89-100. Web SearchBibTeXDownload
2010
58Model Composition for Macromolecular Regulatory Networks. Ranjit Randhawa, Clifford A. Shaffer, John J. Tyson. IEEE/ACM Trans. Comput. Biology Bioinform. (7): 278-287 (2010). Web SearchBibTeXDownload
57Ensemble PDP-8: eight principles for distributed portals. 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. JCDL 2010, 341-344. Web SearchBibTeXDownload
56Building an online educational community for algorithm visualization. Clifford A. Shaffer, Thomas L. Naps, Susan H. Rodger, Stephen H. Edwards. SIGCSE 2010, 475-476. Web SearchBibTeXDownload
55Algorithm Visualization: The State of the Field. Clifforda Shaffer, Matthew L. Cooper, Alexander Joel D. Alon, Monika Akbar, Michael Stewart, Sean Ponce, Stephen H. Edwards. TOCE (10) (2010). Web SearchBibTeXDownload
54Multistate modeling and simulation for regulatory networks. Zhen Liu, Umme Juka Mobassera, Clifford A. Shaffer, Layne T. Watson, Yang Cao. Winter Simulation Conference 2010, 631-642. Web SearchBibTeXDownload
2009
53Model aggregation: a building-block approach to creating large macromolecular regulatory networks. Ranjit Randhawa, Clifford A. Shaffer, John J. Tyson. Bioinformatics (25): 3289-3295 (2009). Web SearchBibTeXDownload
52Stochastic cell cycle modeling for budding yeast. Tae-Hyuk Ahn, Pengyuan Wang, Layne T. Watson, Yang Cao, Clifford A. Shaffer, William T. Baumann. SpringSim 2009. Web SearchBibTeXDownload
2008
51Deterministic parallel global parameter estimation for a model of the budding yeast cell cycle. Thomas D. Panning, Layne T. Watson, Nicholas Allen, Katherine C. Chen, Clifford A. Shaffer, John J. Tyson. J. Global Optimization (40): 719-738 (2008). Web SearchBibTeXDownload
50Converting macromolecular regulatory models from deterministic to stochastic formulation. Pengyuan Wang, Ranjit Randhawa, Clifford A. Shaffer, Yang Cao, William T. Baumann. SpringSim 2008, 385-392. Web SearchBibTeXDownload
2007
49Algorithm visualization: a report on the state of the field. Clifford A. Shaffer, Matthew Cooper, Stephen H. Edwards. SIGCSE 2007, 150-154. Web SearchBibTeXDownload
48A Mathematical Programming Formulation for the Budding Yeast Cell Cycle. Thomas D. Panning, Layne T. Watson, Clifford A. Shaffer, John J. Tyson. Simulation (83): 497-514 (2007). Web SearchBibTeXDownload
47S4W: a problem-solving environment for wireless system design. Dhananjay Mishra, Clifford A. Shaffer, Naren Ramakrishnan, Layne T. Watson, Kyung Kyoon Bae, Jian He, Alex Verstak, William H. Tranter. Softw., Pract. Exper. (37): 1539-1558 (2007). Web SearchBibTeXDownload
46Fusing and composing macromolecular regulatory network models. Ranjit Randhawa, Clifford A. Shaffer, John J. Tyson. SpringSim (2) 2007, 337-344. Web SearchBibTeXDownload
2006
45The JigCell Model Builder: A Spreadsheet Interface for Creating Biochemical Reaction Network Models. Marc Vass, Clifford A. Shaffer, Naren Ramakrishnan, Layne T. Watson, John J. Tyson. IEEE/ACM Trans. Comput. Biology Bioinform. (3): 155-164 (2006). Web SearchBibTeXDownload
44Experiences teaching a graduate research methods course. Clifford A. Shaffer. SIGCSE Bulletin (38): 97-101 (2006). Web SearchBibTeXDownload
43Challenges for modeling and simulation methods in systems biology. Herbert M. Sauro, David Harel, Marta Z. Kwiatkowska, Clifford A. Shaffer, Adelinde M. Uhrmacher, Michael Hucka, Pedro Mendes, Lena Strömbäck, John J. Tyson. Winter Simulation Conference 2006, 1720-1730. Web SearchBibTeXDownload
42The role of composition and aggregation in modeling macromolecular regulatory networks. Clifford A. Shaffer, Ranjit Randhawa, John J. Tyson. Winter Simulation Conference 2006, 1628-1636. Web SearchBibTeXDownload
2005
41Building modeling tools that support verification, validation, and testing for the domain expert. Nicholas Allen, Clifford A. Shaffer, Layne T. Watson. Winter Simulation Conference 2005, 419-426. Web SearchBibTeXDownload
2004
40The JigCell Model Builder and Run Manager. Marc Vass, Nicholas Allen, Clifford A. Shaffer, Naren Ramakrishnan, Layne T. Watson, John J. Tyson. Bioinformatics (20): 3680-3681 (2004). Web SearchBibTeXDownload
39Defect detection on hardwood logs using high resolution three dimensional laser scan data. Liya Thomas, Lamine Mili, Clifford A. Shaffer, Ed Thomas. ICIP 2004, 243-246. Web SearchBibTeXDownload
38Globally optimal transmitter placement for indoor wireless communication systems. 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. IEEE Transactions on Wireless Communications (3): 1906-1911 (2004). Web SearchBibTeXDownload
37A Hierarchical Parallel Scheme for Global Parameter Estimation in Systems Biology. Jian He, Masha Sosonkina, Clifford A. Shaffer, John J. Tyson, Layne T. Watson, Jason W. Zwolak. IPDPS 2004. Web SearchBibTeXDownload
36Towards integrated PSEs for wireless communications: experiences with the S4W and SitePlanner® projects. 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. Mobile Computing and Communications Review (8): 20-34 (2004). Web SearchBibTeXDownload
35Effective features of algorithm visualizations. Purvi Saraiya, Clifford A. Shaffer, D. Scott McCrickard, Chris North. SIGCSE 2004, 382-386. Web SearchBibTeXDownload
34Buffer pools and file processing projects for an undergraduate data structures course. Clifford A. Shaffer. SIGCSE 2004, 175-178. Web SearchBibTeXDownload
2003
33From landscapes to waterscapes: A PSE for landuse change analysis. 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. Eng. Comput. (Lond.) (19): 9-25 (2003). Web SearchBibTeXDownload
32BSML: A binding schema markup language for data interchange in problem solving environments. Alex Verstak, Naren Ramakrishnan, Layne T. Watson, Jian He, Clifford A. Shaffer, Kyung Kyoon Bae, Jing Jiang, William H. Tranter, Theodore S. Rappaport. Scientific Programming (11): 199-224 (2003). Web SearchBibTeXDownload
31Improving the Development Process for Eukaryotic Cell Cycle Models with a Modeling Support Environment. Nicholas Allen, Clifford A. Shaffer, Naren Ramakrishnan, Marc T. Vass, Layne T. Watson. Simulation (79): 674-688 (2003). Web SearchBibTeXDownload
30Next generation modeling II - applications: improving the development process for eukaryotic cell cycle models with a modeling support environment. Nicholas Allen, Clifford A. Shaffer, Marc Vass, Naren Ramakrishnan, Layne T. Watson. Winter Simulation Conference 2003, 782-790. Web SearchBibTeXDownload
2002
29Dynamic Data Structures for a Direct Search Algorithm. Jian He, Layne T. Watson, Naren Ramakrishnan, Clifford A. Shaffer, Alex Verstak, Jing Jiang, Kyung Kyoon Bae, William H. Tranter. Comp. Opt. and Appl. (23): 5-25 (2002). Web SearchBibTeXDownload
28Programming environments for multidisciplinary Grid communities. Naren Ramakrishnan, Layne T. Watson, Dennis G. Kafura, Calvin J. Ribbens, Clifford A. Shaffer. Concurrency and Computation: Practice and Experience (14): 1241-1273 (2002). Web SearchBibTeXDownload
27Using Hierarchical Data Mining to Characterize Performance of Wireless System Configurations. Alex Verstak, Naren Ramakrishnan, Kyung Kyoon Bae, William H. Tranter, Layne T. Watson, Jian He, Clifford A. Shaffer, Theodore S. Rappaport. CoRR (cs.CE/0208040) (2002). Web SearchBibTeXDownload
26BSML: A Binding Schema Markup Language for Data Interchange in Problem Solving Environments (PSEs). Alex Verstak, Naren Ramakrishnan, Layne T. Watson, Jian He, Clifford A. Shaffer, Kyung Kyoon Bae, Jing Jiang, William H. Tranter, Theodore S. Rappaport. CoRR (cs.CE/0202027) (2002). Web SearchBibTeXDownload
25Supporting creativity in problem solving environments. Marc Vass, John M. Carroll, Clifford A. Shaffer. Creativity & Cognition 2002, 31-37. Web SearchBibTeXDownload
24S4W: Globally Optimized Design of Wireless Communications Systems. 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. IPDPS 2002. Web SearchBibTeXDownload
2001
23Resource sharing for replicated synchronous groupware. James Begole, Randall B. Smith, Craig A. Struble, Clifford A. Shaffer. IEEE/ACM Trans. Netw. (9): 833-843 (2001). Web SearchBibTeXDownload
1999
22Flexible collaboration transparency: supporting worker independence in replicated application-sharing systems. James Begole, Mary Beth Rosson, Clifford A. Shaffer. ACM Trans. Comput.-Hum. Interact. (6): 95-132 (1999). Web SearchBibTeXDownload
21WBCSim: A Prototype Problem Solving Environment for Wood-Based Composites Simulations. Amit Goel, Constantinos Phanouriou, Frederick A. Kamke, Calvin J. Ribbens, Clifford A. Shaffer, Layne T. Watson. Eng. Comput. (Lond.) (15): 198-210 (1999). Web SearchBibTeXDownload
20VizCraft: A Multidimensional Visualization Tool for Aircraft Configuration Design. Amit Goel, Chuck Baker, Clifford A. Shaffer, Bernard Grossman, Raphael T. Haftka, William H. Mason, Layne T. Watson. IEEE Visualization 1999, 425-428. Web SearchBibTeXDownload
1998
19Supporting Worker Independence in Collaboration Transparency. James Begole, Mary Beth Rosson, Clifford A. Shaffer. ACM Symposium on User Interface Software and Technology 1998, 133-142. Web SearchBibTeXDownload
18Visualization for multiparameter aircraft designs. Clifford A. Shaffer, Duane L. Knill, Layne T. Watson. IEEE Visualization 1998, 491-494. Web SearchBibTeXDownload
1997
17Transparent Sharing of Java Applets: A Replicated Approach. James Begole, Craig A. Struble, Clifford A. Shaffer, Randall B. Smith. ACM Symposium on User Interface Software and Technology 1997, 55-64. Web SearchBibTeXDownload
16Leveraging Java Applets: Toward Collaboration Transparency in Java. James Begole, Craig A. Struble, Clifford A. Shaffer. IEEE Internet Computing (1): 57-64 (1997). Web SearchBibTeXDownload
1996
15Using the Swan data structure visualization system for computer science education. Clifford A. Shaffer, Lenwood S. Heath, Jun Yang. SIGCSE 1996, 140-144. Web SearchBibTeXDownload
1995
14SWAN: A Data Structure Visualization System. Jun Yang, Clifford A. Shaffer, Lenwood S. Heath. Graph Drawing 1995, 520-523. Web SearchBibTeXDownload
1994
13Analysis of the Worst Case Space Complexity of a PR Quadtree. Sriram V. Pemmaraju, Clifford A. Shaffer. Inf. Process. Lett. (49): 263-267 (1994). Web SearchBibTeXDownload
1993
12Generalized comparison of quadtree and bintree storage requirements. Clifford A. Shaffer, Ramana Juvvadi, Lenwood S. Heath. Image Vision Comput. (11): 402-412 (1993). Web SearchBibTeXDownload
11A Paging Scheme for Pointer-Based Quadtrees. Clifford A. Shaffer, Patrick R. Brown. SSD 1993, 89-104. Web SearchBibTeXDownload
1990
10A Real-Time Robot Collision Avoidance System (Abstract). Clifford A. Shaffer, Gregory M. Herb. ACM Conference on Computer Science 1990, 441. Web SearchBibTeXDownload
9Set Operations for Unaligned Linear Quadtrees. Clifford A. Shaffer, Hanan Samet. Computer Vision, Graphics, and Image Processing (50): 29-49 (1990). Cited by 4Web SearchBibTeXDownload
8A New Region Expansion for Quadtrees. Chuan-Heng Ang, Hanan Samet, Clifford A. Shaffer. IEEE Trans. Pattern Anal. Mach. Intell. (12): 682-686 (1990). Cited by 12Web SearchBibTeXDownload
7QUILT: A Geographic Information System based on Quadtrees. Clifford A. Shaffer, Hanan Samet, Randal C. Nelson. IJGIS (4): 103-131 (1990). Web SearchBibTeX
1989
6A Full Resolution Elevation Representation Requiring Three Bits per Pixel. Clifford A. Shaffer. SSD 1989, 45-64. Web SearchBibTeXDownload
1988
5Algorithm to expand regions represented by linear quadtrees. Clifford A. Shaffer, Hanan Samet. Image Vision Comput. (6): 162-168 (1988). Cited by 2Web SearchBibTeXDownload
1987
4Optimal quadtree construction algorithms. Clifford A. Shaffer, Hanan Samet. Computer Vision, Graphics, and Image Processing (37): 402-419 (1987). Cited by 50Web SearchBibTeXDownload
3Digitizing the Plane with Cells of Nonuniform Size. Hanan Samet, Clifford A. Shaffer, Robert E. Webber. Inf. Process. Lett. (24): 369-375 (1987). Cited by 6Web SearchBibTeXDownload
1985
2A Model for the Analysis of Neighbor Finding in Pointer-Based Quadtrees. Hanan Samet, Clifford A. Shaffer. IEEE Trans. Pattern Anal. Mach. Intell. (7): 717-720 (1985). Web SearchBibTeXDownload
1984
1A geographic information system using quadtrees. Hanan Samet, Azriel Rosenfeld, Clifford A. Shaffer, Robert E. Webber. Pattern Recognition (17): 647-656 (1984). Cited by 30Web SearchBibTeXDownload
from DBLP and Google Scholar
Developed by the Database Group at the University of Wisconsin and Yahoo! Research