Polarity in the Classroom: A Case Study Leveraging Peer Sentiment Toward Scalable Assessment.

Les A. Piegl https://orcid.org/0000-0003-0629-8496

Zachariah J. Beasley Les A. Piegl Paul Rosen 0001 Polarity in the Classroom: A Case Study Leveraging Peer Sentiment Toward Scalable Assessment. 515-525 2021 14 IEEE Trans. Learn. Technol. 4 https://doi.org/10.1109/TLT.2021.3102184 db/journals/tlt/tlt14.html#BeasleyPR21

Zachariah Beasley Les A. Piegl Paul Rosen 0001 Polarity in the Classroom: A Case Study Leveraging Peer Sentiment Toward Scalable Assessment. 2021 abs/2108.10068 CoRR https://arxiv.org/abs/2108.10068 db/journals/corr/corr2108.html#abs-2108-10068

Zachariah Beasley Alon Friedman Les A. Piegl Paul Rosen 0001 Leveraging Peer Feedback to Improve Visualization Education. 146-155 2020 PacificVis https://doi.org/10.1109/PacificVis48177.2020.1261 conf/apvis/2020 db/conf/apvis/pacificvis2020.html#BeasleyFPR20

Zachariah Beasley Alon Friedman Les A. Piegl Paul Rosen 0001 Leveraging Peer Feedback to Improve Visualization Education. 2020 abs/2001.07549 CoRR https://arxiv.org/abs/2001.07549 db/journals/corr/corr2001.html#abs-2001-07549

Paul Rosen 0001 Mustafa Hajij Junyi Tu Tanvirul Arafin Les A. Piegl Inferring Quality in Point Cloud-based 3D Printed Objects using Topological Data Analysis. 2018 abs/1807.02921 CoRR http://arxiv.org/abs/1807.02921 db/journals/corr/corr1807.html#abs-1807-02921

William Oropallo Les A. Piegl Ten challenges in 3D printing. 135-148 2016 32 Eng. Comput. 1 https://doi.org/10.1007/s00366-015-0407-0 db/journals/ewc/ewc32.html#OropalloP16

Les A. Piegl Wayne Tiller Khairan Rajab It is time to drop the "R" from NURBS. 703-714 2014 30 Eng. Comput. 4 https://doi.org/10.1007/s00366-013-0318-x db/journals/ewc/ewc30.html#PieglTR14

Les A. Piegl Parikshit Kulkarni Khairan Rajab Data Processing for Medial Axis Computation Using B-Spline Smoothing. 2014 14 J. Comput. Inf. Sci. Eng. 4 https://doi.org/10.1115/1.4027991 db/journals/jcise/jcise14.html#PieglKR14

Khairan Rajab Les A. Piegl Volha Smarodzinava CAD model repair using knowledge-guided NURBS. 477-486 2013 29 Eng. Comput. 4 https://doi.org/10.1007/s00366-012-0264-z db/journals/ewc/ewc29.html#RajabPS13

Konstantinos Dalamagkidis Kimon P. Valavanis Les A. Piegl Nonlinear Model Predictive Control With Neural Network Optimization for Autonomous Autorotation of Small Unmanned Helicopters. 818-831 2011 19 IEEE Trans. Control. Syst. Technol. 4 https://doi.org/10.1109/TCST.2010.2054092 db/journals/tcst/tcst19.html#DalamagkidisVP11

Konstantinos Dalamagkidis Kimon P. Valavanis Les A. Piegl Autonomous Autorotation of Unmanned Rotorcraft using Nonlinear Model Predictive Control. 351-369 2010 57 J. Intell. Robotic Syst. 1-4 https://doi.org/10.1007/s10846-009-9366-2 db/journals/jirs/jirs57.html#DalamagkidisVP10

Konstantinos Dalamagkidis Kimon P. Valavanis Les A. Piegl Small unmanned helicopter autorotation using non-linear model predictive control. 6350-6357 2010 CDC https://doi.org/10.1109/CDC.2010.5717388 conf/cdc/2010 db/conf/cdc/cdc2010.html#DalamagkidisVP10

Les A. Piegl Khairan Rajab Volha Smarodzinava Kimon P. Valavanis Using a biarc filter to compute curvature extremes of NURBS curves. 379-387 2009 25 Eng. Comput. 4 https://doi.org/10.1007/s00366-009-0131-8 db/journals/ewc/ewc25.html#PieglRSV09

Kimon P. Valavanis Paul Oh Les A. Piegl Guest Editorial for the Special Volume On Unmanned Aircraft Systems (UAS). 1-2 2009 54 J. Intell. Robotic Syst. 1-3 https://doi.org/10.1007/s10846-008-9278-6 db/journals/jirs/jirs54.html#ValavanisOP09

Les A. Piegl Khairan Rajab Volha Smarodzinava Curve interpolation with directional constraints for engineering design. 79-85 2008 24 Eng. Comput. 1 https://doi.org/10.1007/s00366-007-0073-y db/journals/ewc/ewc24.html#PieglRS08

Les A. Piegl Wayne Tiller Fitting NURBS spherical patches to measured data. 97-106 2008 24 Eng. Comput. 2 https://doi.org/10.1007/s00366-007-0076-8 db/journals/ewc/ewc24.html#PieglT08

Konstantinos Dalamagkidis Kimon P. Valavanis Les A. Piegl Current Status and Future Perspectives for Unmanned Aircraft System Operations in the US. 313-329 2008 52 J. Intell. Robotic Syst. 2 https://doi.org/10.1007/s10846-008-9213-x db/journals/jirs/jirs52.html#DalamagkidisVP08

Les A. Piegl Ten challenges in computer-aided design. 461-470 2005 37 Comput. Aided Des. 4 https://doi.org/10.1016/j.cad.2004.08.012 db/journals/cad/cad37.html#Piegl05

Les A. Piegl CAD'04 Special Issue: modeling and geometry representations for CAD. 781 2005 37 Comput. Aided Des. 8 https://doi.org/10.1016/j.cad.2004.12.003 db/journals/cad/cad37.html#Piegl05a

Les A. Piegl CAD'04 Special Issue: Product design, integration and manufacturing. 879 2005 37 Comput. Aided Des. 9 https://doi.org/10.1016/j.cad.2004.12.004 db/journals/cad/cad37.html#Piegl05b

Les A. Piegl Weiyin Ma Wayne Tiller An alternative method of curve interpolation. 104-117 2005 21 Vis. Comput. 1-2 https://doi.org/10.1007/s00371-004-0274-y db/journals/vc/vc21.html#PieglMT05

Les A. Piegl Special issue on automated synthesis of human-competitive designs by means of genetic programming. 1279 2004 36 Comput. Aided Des. 12 https://doi.org/10.1016/j.cad.2004.05.003 db/journals/cad/cad36.html#Piegl04

Les A. Piegl Wayne Tiller Circle approximation using integral B-splines. 601-607 2003 35 Comput. Aided Des. 6 https://doi.org/10.1016/S0010-4485(02)00096-9 db/journals/cad/cad35.html#PieglT03

Les A. Piegl Wayne Tiller Approximating Surfaces of Revolution by Nonrational B-Splines. 46-52 2003 23 IEEE Computer Graphics and Applications 3 https://doi.org/10.1109/MCG.2003.1198262 http://doi.ieeecomputersociety.org/10.1109/MCG.2003.1198262 db/journals/cga/cga23.html#PieglT03

Les A. Piegl Weiyin Ma Wayne Tiller Surface Fitting to Random Data via Constrained Shaping. 1-20 2003 9 Int. J. Shape Model. 1 db/journals/ijsm/ijsm9.html#PieglMT03

Les A. Piegl Wayne Tiller Algorithm for finding all k nearest neighbors. 167-172 2002 34 Comput. Aided Des. 2 https://doi.org/10.1016/S0010-4485(00)00141-X db/journals/cad/cad34.html#PieglT02

Les A. Piegl Wayne Tiller Biarc approximation of NURBS curves. 807-814 2002 34 Comput. Aided Des. 11 https://doi.org/10.1016/S0010-4485(01)00160-9 db/journals/cad/cad34.html#PieglT02a

Les A. Piegl Wayne Tiller Data Approximation Using Biarcs. 59-65 2002 18 Eng. Comput. 1 https://doi.org/10.1007/s003660200005 db/journals/ewc/ewc18.html#PieglT02

Les A. Piegl Wayne Tiller Fitting Circular Arcs to Measured Data. 1-21 2002 8 Int. J. Shape Model. 1 db/journals/ijsm/ijsm8.html#PieglT02 https://doi.org/10.1142/S0218654302000029

Les A. Piegl Wayne Tiller Surface skinning revisited. 273-283 2002 18 Vis. Comput. 4 https://doi.org/10.1007/s003710100156 db/journals/vc/vc18.html#PieglT02

Les A. Piegl Wayne Tiller Parametrization for surface fitting in reverse engineering. 593-603 2001 33 Comput. Aided Des. 8 https://doi.org/10.1016/S0010-4485(00)00103-2 https://www.wikidata.org/entity/Q126573186 db/journals/cad/cad33.html#PieglT01

Les A. Piegl Wayne Tiller Reducing Control Points in Surface Interpolation. 70-74 2000 20 IEEE Computer Graphics and Applications 5 https://doi.org/10.1109/38.865883 http://doi.ieeecomputersociety.org/10.1109/38.865883 db/journals/cga/cga20.html#PieglT00

Les A. Piegl Wayne Tiller Curve Interpolation with Arbitrary End Derivatives. 73-79 2000 16 Eng. Comput. 1 https://doi.org/10.1007/s003660050038 db/journals/ewc/ewc16.html#PieglT00

Les A. Piegl Wayne Tiller Least-Squares B-Spline Curve Approximation with Arbitary End Derivatives. 109-116 2000 16 Eng. Comput. 2 http://www.springerlink.com/openurl.asp?genre=article&issn=0177-0667&volume=16&issue=2&spage=109 db/journals/ewc/ewc16.html#PieglT00a

Les A. Piegl Wayne Tiller Surface approximation to scanned data. 386-395 2000 16 Vis. Comput. 7 https://doi.org/10.1007/PL00013393 db/journals/vc/vc16.html#PieglT00

Les A. Piegl Wayne Tiller Computing offsets of NURBS curves and surfaces. 147-156 1999 31 Comput. Aided Des. 2 https://doi.org/10.1016/S0010-4485(98)00066-9 https://www.wikidata.org/entity/Q56444666 db/journals/cad/cad31.html#PieglT99

Les A. Piegl Wayne Tiller Cross-Sectional Design with Boundary Constraints. 171-180 1999 15 Eng. Comput. 2 https://doi.org/10.1007/s003660050012 db/journals/ewc/ewc15.html#PieglT99

Les A. Piegl Wayne Tiller Filling n-sided regions with NURBS patches. 77-89 1999 15 Vis. Comput. 2 https://doi.org/10.1007/s003710050163 db/journals/vc/vc15.html#PieglT99

Les A. Piegl Wayne Tiller Geometry-based triangulation of trimmed NURBS surfaces. 11-18 1998 30 Comput. Aided Des. 1 https://doi.org/10.1016/S0010-4485(97)00047-X https://www.wikidata.org/entity/Q126653647 db/journals/cad/cad30.html#PieglT98

Les A. Piegl Wayne Tiller Computing the derivative of NURBS with respect to a knot. 925-934 1998 15 Comput. Aided Geom. Des. 9 https://doi.org/10.1016/S0167-8396(98)00028-4 db/journals/cagd/cagd15.html#PieglT98

Les A. Piegl Wayne Tiller The NURBS Book, Second Edition. I-XIV, 1-646 Springer 1997 Monographs in Visual Communication 978-3-540-61545-3 978-3-642-59223-2 https://doi.org/10.1007/978-3-642-59223-2

Les A. Piegl Wayne Tiller Symbolic operators for NURBS. 361-368 1997 29 Comput. Aided Des. 5 https://doi.org/10.1016/S0010-4485(96)00074-7 https://www.wikidata.org/entity/Q127763001 db/journals/cad/cad29.html#PieglT97

Jennifer A. Polack-Wahl Les A. Piegl Marc L. Carter Perception of images using cylindrical mapping. 155-167 1997 13 Vis. Comput. 4 https://doi.org/10.1007/s003710050096 db/journals/vc/vc13.html#PolackPC97

Les A. Piegl Wayne Tiller Algorithm for approximate skinning. 699-706 1996 28 Comput. Aided Des. 9 https://doi.org/10.1016/0010-4485(95)00084-4 db/journals/cad/cad28.html#PieglT96

Alok K. Chaturvedi Les A. Piegl Procedural method for terrain surface interpolation. 541-566 1996 20 Comput. Graph. 4 https://doi.org/10.1016/0097-8493(96)00026-X db/journals/cg/cg20.html#ChaturvediP96

Les A. Piegl Wayne Tiller The NURBS Book. I-XIV, 1-646 Springer 1995 Monographs in Visual Communication 978-3-540-55069-3

Les A. Piegl Arnaud M. Richard Tessellating trimmed surfaces. 16-26 1995 27 Comput. Aided Des. 1 https://doi.org/10.1016/0010-4485(95)90749-6 db/journals/cad/cad27.html#PieglR95

Les A. Piegl Wayne Tiller Algorithm for degree reduction of B-spline curves. 101-110 1995 27 Comput. Aided Des. 2 https://doi.org/10.1016/0010-4485(95)92150-Q db/journals/cad/cad27.html#PieglT95

Tsung-Pao Fang Les A. Piegl Delaunay triangulation in three dimensions. 62-69 1995 15 IEEE Computer Graphics and Applications 5 https://doi.org/10.1109/38.403829 http://doi.ieeecomputersociety.org/10.1109/38.403829 db/journals/cga/cga15.html#FangP95

Les A. Piegl Editorial. 3-5 1994 26 Comput. Aided Des. 1 https://doi.org/10.1016/0010-4485(94)90002-7 db/journals/cad/cad26.html#Piegl94

Les A. Piegl Wayne Tiller Software-engineering approach to degree elevation of B-spline curves. 17-28 1994 26 Comput. Aided Des. 1 https://doi.org/10.1016/0010-4485(94)90004-3 db/journals/cad/cad26.html#PieglT94

Tsung-Pao Fang Les A. Piegl Algorithm for constained delaunay triangulation. 255-265 1994 10 Vis. Comput. 5 db/journals/vc/vc10.html#FangP94 https://doi.org/10.1007/BF01901582

Les A. Piegl Arnaud M. Richard Algorithm and data structure for triangulating multiply connected polygonal domains. 563-574 1993 17 Comput. Graph. 5 https://doi.org/10.1016/0097-8493(93)90007-V db/journals/cg/cg17.html#PieglR93

Tsung-Pao Fang Les A. Piegl Delaunay triangulation using a uniform grid. 36-47 1993 13 IEEE Computer Graphics and Applications 3 https://doi.org/10.1109/38.210490 http://doi.ieeecomputersociety.org/10.1109/38.210490 db/journals/cga/cga13.html#FangP93

Les A. Piegl An introduction to the curves and surfaces of computer-aided design: Robert C Beach Van Nostrand Reinhold, USA. 288 1992 24 Comput. Aided Des. 5 https://doi.org/10.1016/0010-4485(92)90083-M db/journals/cad/cad24.html#Piegl92

Tsung-Pao Fang Les A. Piegl Algorithm for Delaunay triangulation and convex-hull computation using a sparse matrix. 425-436 1992 24 Comput. Aided Des. 8 https://doi.org/10.1016/0010-4485(92)90010-8 db/journals/cad/cad24.html#FangP92

Jin J. Chou Les A. Piegl Data reduction using cubic rational B-splines. 60-68 1992 12 IEEE Computer Graphics and Applications 3 https://doi.org/10.1109/38.135914 http://doi.ieeecomputersociety.org/10.1109/38.135914 db/journals/cga/cga12.html#ChouP92

Narayanan Anantakrishnan Les A. Piegl Integer de Casteljau Algorithm for Rasterizing NURBS Curves. 151-162 1992 11 Comput. Graph. Forum 2 https://doi.org/10.1111/1467-8659.1120151 db/journals/cgf/cgf11.html#AnantakrishnanP92

Narayanan Anantakrishnan Les A. Piegl Integer subdivision algorithm for rendering NURBS curves. 149-161 1992 8 Vis. Comput. 3 db/journals/vc/vc8.html#AnantakrishnanP92 https://doi.org/10.1007/BF01902135

Les A. Piegl 7. Constructive Geometric Approach to Surface-Surface Intersection. 137-159 1992 Geometry Processing for Design and Manufacturing https://doi.org/10.1137/1.9781611971668.ch7 books/siam/92/B1992 db/books/collections/B1992.html#Piegl92

Les A. Piegl On NURBS: a survey. 55-71 1991 11 IEEE Computer Graphics and Applications 1 https://doi.org/10.1109/38.67702 http://doi.ieeecomputersociety.org/10.1109/38.67702 db/journals/cga/cga11.html#Piegl91

Les A. Piegl Happy birthday Pierre Bézier. 522 1990 22 Comput. Aided Des. 9 https://doi.org/10.1016/0010-4485(90)90035-B https://www.wikidata.org/entity/Q121224201 db/journals/cad/cad22.html#Piegl90

Les A. Piegl A program development for a university course in geometric modeling. 501-504 1990 14 Comput. Graph. 3-4 https://doi.org/10.1016/0097-8493(90)90072-6 db/journals/cg/cg14.html#Piegl90

Les A. Piegl Wayne Tiller A menagerie of rational B-spline circles. 48-56 1989 9 IEEE Computer Graphics and Applications 5 https://doi.org/10.1109/38.35537 http://doi.ieeecomputersociety.org/10.1109/38.35537 db/journals/cga/cga9.html#PieglT89

Les A. Piegl Coons-type patches. 221-228 1988 12 Comput. Graph. 2 https://doi.org/10.1016/0097-8493(88)90033-7 db/journals/cg/cg12.html#Piegl88

Les A. Piegl Infinite Control Points-A Method for Representing Surfaces of Revolution Using Boundary Data. 45-55 1987 7 IEEE Computer Graphics and Applications 3 https://doi.org/10.1109/MCG.1987.276964 http://doi.ieeecomputersociety.org/10.1109/MCG.1987.276964 db/journals/cga/cga7.html#Piegl87

Les A. Piegl Interactive Data Interpolation by Rational Bezier Curves. 45-58 1987 7 IEEE Computer Graphics and Applications 4 https://doi.org/10.1109/MCG.1987.276871 http://doi.ieeecomputersociety.org/10.1109/MCG.1987.276871 db/journals/cga/cga7.html#Piegl87a

Les A. Piegl Less Data for Shapes. 48-50 1987 7 IEEE Computer Graphics and Applications 8 https://doi.org/10.1109/MCG.1987.276920 http://doi.ieeecomputersociety.org/10.1109/MCG.1987.276920 db/journals/cga/cga7.html#Piegl87b

Les A. Piegl A fast algorithm for parametric curve plotting. 361-367 1983 7 Comput. Graph. 3-4 https://doi.org/10.1016/0097-8493(83)90032-8 db/journals/cg/cg7.html#Piegl83

Narayanan Anantakrishnan Tanvirul Arafin Zachariah BeasleyZachariah J. Beasley Marc L. Carter Alok K. Chaturvedi Jin J. Chou Konstantinos Dalamagkidis Tsung-Pao Fang Alon Friedman Mustafa Hajij Parikshit Kulkarni Weiyin Ma Paul Oh William Oropallo Jennifer A. PolackJennifer A. Polack-Wahl Khairan D. RajabKhairan Rajab Arnaud M. Richard Paul Rosen 0001 Volha Smarodzinava Wayne Tiller Junyi Tu Kimon P. Valavanis