Michael G Wagner - Academia.edu (original) (raw)
Papers by Michael G Wagner
Handbook of Computer Aided Geometric Design, 2002
This chapter demonstrates that the techniques of computer-aided geometric design can be generaliz... more This chapter demonstrates that the techniques of computer-aided geometric design can be generalized to kinematics, computer animation, and robotics. The approach relies on spatial rational spline motions, which can be seen as the kinematical analogue of rational spline curves. The potential applications include keyframe interpolation in computer graphics, motion planning in robotics, and sweep surface modeling in Geometric Design. Euler parameters are used in the chapter to represent rotation matrices, leading directly to the kinematical mapping of spherical kinematics. Quaternions are a powerful tool to describe 3D rotations in spherical kinematics. The chapter introduces the basic concepts of quaternion calculus, and explains their relationship with the kinematical mapping. It describes various non-rational techniques for motion design, using curves on the unit quaternion sphere. It provides an outline of available algorithms for spatial rational motions, along with a brief discussion of several applications. It concludes by suggesting some directions for further research.
Human IT: Journal for Information Technology Studies as a Human Science, 2008
The emergence of new media tends to trigger moral panics, quite often leading to overreactions wi... more The emergence of new media tends to trigger moral panics, quite often leading to overreactions within political systems. Such an overreaction can currently be observed in some European countries in connection with a legal ban of violent video games. In contrast to these countries, Austrian youth policy makers have decided to follow a path of positive assessment for computer and console games rather than rigid legislative regulations. In implementing this strategy, two research studies were carried out. The first discussed scenarios for a public authority providing information on quality computer and console games. The second study analysed the acceptance of a quality seal for games. In this paper we discuss these studies. In addition, we outline continuing research carried out to improve and refine the process of assessment as well as the information and communication process between the authorities and the parents, children and youngsters.
These proceedings contains papers presented at the Web3D 2002 Symposium, which was held February ... more These proceedings contains papers presented at the Web3D 2002 Symposium, which was held February 24-28, 2002 in Tempe, Arizona. The purpose of the symposium was to bring together researchers, developers, experimenters, and content creators of the Web3D community to exchange ideas and discuss future directions of Web3D related research and technology.
In this paper we present a novel approach for the development of serious games that integrates el... more In this paper we present a novel approach for the development of serious games that integrates elements from instructional design with the iterative design methodology used in commercial game development. Our approach is motivated through a theoretical model of game based learning that borrows key concepts from Heinz Von Foerster’s epistemology of radical constructivism and James Paul Gee’s three-identity model. We furthermore detail how our approach was used in the development of Ludwig, an award winning physics learning game for middle school classroom use. An evaluation of how our method proved successful in the development of Ludwig along with an outlook on future research concludes this paper.
Advances in Computational Mathematics, 1994
Praxishandbuch Historisches Lernen und Medienbildung im digitalen Zeitalter, 2017
Series in Machine Perception and Artificial Intelligence
Proceedings Geometric Modeling and Processing 2000. Theory and Applications
ABSTRACT This paper presents two variations of a robust watermarking method for general polygonal... more ABSTRACT This paper presents two variations of a robust watermarking method for general polygonal meshes of arbitrary topology which can be used for copyright protection, tamper proofing or content annotation purposes. The proposed watermark is immune to translation, rotation, scaling or affine transformation of the mesh and is hard to detect unless the exact encoding parameters are disclosed. Several examples demonstrate the effectiveness of the algorithm
2003 Annual Conference Proceedings
... James B. Adams, Mary R. Anderson-Rowland, Meena Nimmagadda, Michael Wagner, Milica Milovancev... more ... James B. Adams, Mary R. Anderson-Rowland, Meena Nimmagadda, Michael Wagner, Milica Milovancevic, Anjali Gupta, Sandhya Pillalamarri, Sasha Pasulka ... men in their math and science abilities, even when they receive the same grades 3, 4, 5, 6, 7. Margolis and Fisher ...
In this paper we present a novel approach for the development of serious games that integrates el... more In this paper we present a novel approach for the development of serious games that integrates elements from instructional design with the iterative design methodology used in commercial game development. Our approach is motivated through a theoretical model of game based learning that borrows key concepts from Heinz Von Foerster’s epistemology of radical constructivism and James Paul Gee’s three-identity model. We furthermore detail how our approach was used in the development of Ludwig, an award winning physics learning game for middle school classroom use. An evaluation of how our method proved successful in the development of Ludwig along with an outlook on future research concludes this paper.
During the past two years we developed a physics game following a unique design principle. Many e... more During the past two years we developed a physics game following a unique design principle. Many educational games currently available on the market solely focus on knowledge transfer following a behaviourist principle (Annetta, 2010). The learner is confronted with more or less demanding tasks which are solved using the trial and error method (Skinner, 1938). Learning success is directly assessed using a simple feedback system („right“, „wrong“). Furthermore the audio visual quality of interactive learning software often can’t keep up with video games today’s target group has become accustomed to. We decided to take a different path.Since fun of play is considered as one of the key elements of an elaborated game playing experience (Vorderer et al., 2004), we decided to design a fun filled and action packed learning game built around a serious topic: renewable energies. The content of the game is based on the physics curriculum while the graphical and audio visual quality of "Lu...
This paper presents a comparative study of the commercial usability of six B2C e-commerce website... more This paper presents a comparative study of the commercial usability of six B2C e-commerce websites utilizing advanced media; in particular web based 3d media (web3d). The study indicates that even though some technologies show promise in enhancing the quality of the online shopping experience, they generally disrupt the State of Flow and thereby have a counterproductive effect on the perceived quality of an e-commerce website.
The study of computer games and their influence in culture has become an important issue in many ... more The study of computer games and their influence in culture has become an important issue in many disciplines. In this paper we will analyze how computer games change our understanding of reading literacy in a pedagogical context. Based on Aarseth's classification of cybertexts we will develop a typology of interactive media and utilize this typology to derive a new theoretical approach to interactive media reading literacy. According to this approach the reading of books has the same pedagogical importance as the "reading", or playing, of computer games. In order to arrive at this position, we will expand the traditional concept of reading literacy by emphasizing elements of decision-making and strategic thinking, competencies that have previously not been considered connected to reading literacy.
Recent research on fandom spaces from Henry Jenkins (2006) highlights the emergence of media-orie... more Recent research on fandom spaces from Henry Jenkins (2006) highlights the emergence of media-oriented communities of practice, or “affinity groups” (Gee 2004). They form within the virtual spaces enabled by new media and communication technologies and create so-called “new third places” through the emergent behavior of their participants (Steinkuehler & Williams 2006). One example of such an affinity group is the eSports community.
Die Möglichkeiten einer pädagogischen Nutzung von Online Spielen wird heute oftmals zugleich unte... more Die Möglichkeiten einer pädagogischen Nutzung von Online Spielen wird heute oftmals zugleich unter- wir auch überschätzt. Spiele haben zwar ganz generell ein hohes didaktisches Potential, der erfolgreiche Einsatz ist allerdings aufwendig und erfordert eine verhältnismäßig intensive Lernprozessbegleitung. In diesem Artikel sollen einige der grundlegenden lern- wie auch spieltheoretischen Überlegungen zu diesem Thema dargelegt werden. Es wird insbesondere gezeigt worin die hohe theoretische Komplexität von Online Spielen liegt und wie diese Komplexität die Praxis einer didaktischen Nutzung von Online Spielen beeinflusst.
This paper presents two variations of a robust watermarking method for general polygonal meshes o... more This paper presents two variations of a robust watermarking method for general polygonal meshes of arbitrary topology which can be used for copyright protection, tamper proofing or content annotation purposes. The proposed watermark is immune to translation, rotation, scaling or affine transformation of the mesh and is hard to detect unless the exact encoding parameters are disclosed. Several examples demonstrate the effectiveness of the algorithm
This article attempts to address the issue of whether open source software companies may be under... more This article attempts to address the issue of whether open source software companies may be undermining their own competitive advantages by undervaluing the strategic importance of intellectual property. If this would be true, companies could risk their existence by following a potentially destructive business model. We will first take a look at the historic development of the open source movement. After taking a critical view on some issues important within the commercial domain we will address the question of whether open source is a viable option for companies operating in competitive environments and will furthermore present three alternative, hybrid licensing approaches.
International Journal of Shape Modeling, 1998
ABSTRACT Recent investigations on sweeping surfaces generated with help of so–called rotation min... more ABSTRACT Recent investigations on sweeping surfaces generated with help of so–called rotation minimizing frames (profile surfaces) are combined with results from classical differential and kinematic geometry in order to improve geometric design of profile surfaces. In particular, exact and approximate NURBS profile surfaces are studied and generalized to their affine counterparts. For certain motion based surface design purposes, profile surfaces do not exhibit enough flexibility. This leads us to generalized rotation minimizing frames, which turn out to be also a tool for controlling principal curvature lines on surfaces.
Handbook of Computer Aided Geometric Design, 2002
This chapter demonstrates that the techniques of computer-aided geometric design can be generaliz... more This chapter demonstrates that the techniques of computer-aided geometric design can be generalized to kinematics, computer animation, and robotics. The approach relies on spatial rational spline motions, which can be seen as the kinematical analogue of rational spline curves. The potential applications include keyframe interpolation in computer graphics, motion planning in robotics, and sweep surface modeling in Geometric Design. Euler parameters are used in the chapter to represent rotation matrices, leading directly to the kinematical mapping of spherical kinematics. Quaternions are a powerful tool to describe 3D rotations in spherical kinematics. The chapter introduces the basic concepts of quaternion calculus, and explains their relationship with the kinematical mapping. It describes various non-rational techniques for motion design, using curves on the unit quaternion sphere. It provides an outline of available algorithms for spatial rational motions, along with a brief discussion of several applications. It concludes by suggesting some directions for further research.
Human IT: Journal for Information Technology Studies as a Human Science, 2008
The emergence of new media tends to trigger moral panics, quite often leading to overreactions wi... more The emergence of new media tends to trigger moral panics, quite often leading to overreactions within political systems. Such an overreaction can currently be observed in some European countries in connection with a legal ban of violent video games. In contrast to these countries, Austrian youth policy makers have decided to follow a path of positive assessment for computer and console games rather than rigid legislative regulations. In implementing this strategy, two research studies were carried out. The first discussed scenarios for a public authority providing information on quality computer and console games. The second study analysed the acceptance of a quality seal for games. In this paper we discuss these studies. In addition, we outline continuing research carried out to improve and refine the process of assessment as well as the information and communication process between the authorities and the parents, children and youngsters.
These proceedings contains papers presented at the Web3D 2002 Symposium, which was held February ... more These proceedings contains papers presented at the Web3D 2002 Symposium, which was held February 24-28, 2002 in Tempe, Arizona. The purpose of the symposium was to bring together researchers, developers, experimenters, and content creators of the Web3D community to exchange ideas and discuss future directions of Web3D related research and technology.
In this paper we present a novel approach for the development of serious games that integrates el... more In this paper we present a novel approach for the development of serious games that integrates elements from instructional design with the iterative design methodology used in commercial game development. Our approach is motivated through a theoretical model of game based learning that borrows key concepts from Heinz Von Foerster’s epistemology of radical constructivism and James Paul Gee’s three-identity model. We furthermore detail how our approach was used in the development of Ludwig, an award winning physics learning game for middle school classroom use. An evaluation of how our method proved successful in the development of Ludwig along with an outlook on future research concludes this paper.
Advances in Computational Mathematics, 1994
Praxishandbuch Historisches Lernen und Medienbildung im digitalen Zeitalter, 2017
Series in Machine Perception and Artificial Intelligence
Proceedings Geometric Modeling and Processing 2000. Theory and Applications
ABSTRACT This paper presents two variations of a robust watermarking method for general polygonal... more ABSTRACT This paper presents two variations of a robust watermarking method for general polygonal meshes of arbitrary topology which can be used for copyright protection, tamper proofing or content annotation purposes. The proposed watermark is immune to translation, rotation, scaling or affine transformation of the mesh and is hard to detect unless the exact encoding parameters are disclosed. Several examples demonstrate the effectiveness of the algorithm
2003 Annual Conference Proceedings
... James B. Adams, Mary R. Anderson-Rowland, Meena Nimmagadda, Michael Wagner, Milica Milovancev... more ... James B. Adams, Mary R. Anderson-Rowland, Meena Nimmagadda, Michael Wagner, Milica Milovancevic, Anjali Gupta, Sandhya Pillalamarri, Sasha Pasulka ... men in their math and science abilities, even when they receive the same grades 3, 4, 5, 6, 7. Margolis and Fisher ...
In this paper we present a novel approach for the development of serious games that integrates el... more In this paper we present a novel approach for the development of serious games that integrates elements from instructional design with the iterative design methodology used in commercial game development. Our approach is motivated through a theoretical model of game based learning that borrows key concepts from Heinz Von Foerster’s epistemology of radical constructivism and James Paul Gee’s three-identity model. We furthermore detail how our approach was used in the development of Ludwig, an award winning physics learning game for middle school classroom use. An evaluation of how our method proved successful in the development of Ludwig along with an outlook on future research concludes this paper.
During the past two years we developed a physics game following a unique design principle. Many e... more During the past two years we developed a physics game following a unique design principle. Many educational games currently available on the market solely focus on knowledge transfer following a behaviourist principle (Annetta, 2010). The learner is confronted with more or less demanding tasks which are solved using the trial and error method (Skinner, 1938). Learning success is directly assessed using a simple feedback system („right“, „wrong“). Furthermore the audio visual quality of interactive learning software often can’t keep up with video games today’s target group has become accustomed to. We decided to take a different path.Since fun of play is considered as one of the key elements of an elaborated game playing experience (Vorderer et al., 2004), we decided to design a fun filled and action packed learning game built around a serious topic: renewable energies. The content of the game is based on the physics curriculum while the graphical and audio visual quality of "Lu...
This paper presents a comparative study of the commercial usability of six B2C e-commerce website... more This paper presents a comparative study of the commercial usability of six B2C e-commerce websites utilizing advanced media; in particular web based 3d media (web3d). The study indicates that even though some technologies show promise in enhancing the quality of the online shopping experience, they generally disrupt the State of Flow and thereby have a counterproductive effect on the perceived quality of an e-commerce website.
The study of computer games and their influence in culture has become an important issue in many ... more The study of computer games and their influence in culture has become an important issue in many disciplines. In this paper we will analyze how computer games change our understanding of reading literacy in a pedagogical context. Based on Aarseth's classification of cybertexts we will develop a typology of interactive media and utilize this typology to derive a new theoretical approach to interactive media reading literacy. According to this approach the reading of books has the same pedagogical importance as the "reading", or playing, of computer games. In order to arrive at this position, we will expand the traditional concept of reading literacy by emphasizing elements of decision-making and strategic thinking, competencies that have previously not been considered connected to reading literacy.
Recent research on fandom spaces from Henry Jenkins (2006) highlights the emergence of media-orie... more Recent research on fandom spaces from Henry Jenkins (2006) highlights the emergence of media-oriented communities of practice, or “affinity groups” (Gee 2004). They form within the virtual spaces enabled by new media and communication technologies and create so-called “new third places” through the emergent behavior of their participants (Steinkuehler & Williams 2006). One example of such an affinity group is the eSports community.
Die Möglichkeiten einer pädagogischen Nutzung von Online Spielen wird heute oftmals zugleich unte... more Die Möglichkeiten einer pädagogischen Nutzung von Online Spielen wird heute oftmals zugleich unter- wir auch überschätzt. Spiele haben zwar ganz generell ein hohes didaktisches Potential, der erfolgreiche Einsatz ist allerdings aufwendig und erfordert eine verhältnismäßig intensive Lernprozessbegleitung. In diesem Artikel sollen einige der grundlegenden lern- wie auch spieltheoretischen Überlegungen zu diesem Thema dargelegt werden. Es wird insbesondere gezeigt worin die hohe theoretische Komplexität von Online Spielen liegt und wie diese Komplexität die Praxis einer didaktischen Nutzung von Online Spielen beeinflusst.
This paper presents two variations of a robust watermarking method for general polygonal meshes o... more This paper presents two variations of a robust watermarking method for general polygonal meshes of arbitrary topology which can be used for copyright protection, tamper proofing or content annotation purposes. The proposed watermark is immune to translation, rotation, scaling or affine transformation of the mesh and is hard to detect unless the exact encoding parameters are disclosed. Several examples demonstrate the effectiveness of the algorithm
This article attempts to address the issue of whether open source software companies may be under... more This article attempts to address the issue of whether open source software companies may be undermining their own competitive advantages by undervaluing the strategic importance of intellectual property. If this would be true, companies could risk their existence by following a potentially destructive business model. We will first take a look at the historic development of the open source movement. After taking a critical view on some issues important within the commercial domain we will address the question of whether open source is a viable option for companies operating in competitive environments and will furthermore present three alternative, hybrid licensing approaches.
International Journal of Shape Modeling, 1998
ABSTRACT Recent investigations on sweeping surfaces generated with help of so–called rotation min... more ABSTRACT Recent investigations on sweeping surfaces generated with help of so–called rotation minimizing frames (profile surfaces) are combined with results from classical differential and kinematic geometry in order to improve geometric design of profile surfaces. In particular, exact and approximate NURBS profile surfaces are studied and generalized to their affine counterparts. For certain motion based surface design purposes, profile surfaces do not exhibit enough flexibility. This leads us to generalized rotation minimizing frames, which turn out to be also a tool for controlling principal curvature lines on surfaces.