BibSonomy publications for /tag/iterativeThu Jan 19 16:04:53 CET 2012Proc. Fifth Annual IEEE International Conference on Pervasive Computing and Communications PerCom '0779--86Designing Ubiquitous Computing Systems for Sports Equipment2007systems equipment, computing, software hardware sports process, iterative computing components, ubiquitous design In this paper, we report on a user-centered, iterative design process for augmenting sports equipment with ubiquitous computing technology. In several design iterations, a fully working system for training and physiotherapy has been developed and deployed using hard- and software components of ubiquitous computing technology. We report on the design and development process that led to this system. Based on our experience we generalize the specific processes to general ubicomp systems. The validity of our approach has been verified by a larger user studyThu Sep 01 13:26:03 CEST 2011Signal Processing, IEEE Transactions onoct.10 3831 - 3846Efficient coherent adaptive representations of monitored electric signals in power systems using damped sinusoids532005adaptive algorithm; algorithms; analysis; artifact; coherent compression; damped damping; data decomposition; echo electric faults; greedy iterative matching methods; monitoring; post-echo power pre-echo pursuit representation; signal sinusoids; suppression; system systems systems; time-frequency transient transients; This paper presents coherent representations of electric power systems signals. These representations are obtained by employing adaptive signal decompositions. They provide a tool to identify structures composing a signal and constitute an approach to represent a signal from its identified components. We use the matching pursuits algorithm, which is a greedy adaptive decomposition, that has the potential of decomposing a signal into coherent components. The dictionary employed is composed of damped sinusoids in order to obtain signal components closely related to power systems phenomena. In addition, we present an effective method to suppress the pre-echo and post-echo artifacts that often appear when using the matching pursuits. However, the use of a dictionary of damped sinusoids alone does not ensure that the decomposition will be meaningful in physical terms. To overcome this constraint, we develop a technique leading to efficient coherent damped-sinusoidal decompositions that are closely related to the physical phenomena being observed. The effectiveness of the proposed method for compression of synthetic and natural signals is tested, obtaining high compression ratios along with high signal-to-noise ratio.Mon Aug 22 11:45:54 CEST 2011Pervasive Computing, IEEE435 - 41The Webkit tangible user interface: a case study of iterative prototyping42005iterative prototyping se softwareengineering tangible tangibleuserinterfaces userinterfaces Mon Aug 22 11:40:24 CEST 2011Pervasive Computing, IEEE418--26Wizard of Oz Support throughout an Iterative Design Process42005iterative se softwareengineering ubiquitous ubiquitouscomputing wizardofoz Although the Wizard of Oz method for simulating system components is commonly used for evaluation in human-computer interaction, researchers and designers have only started to unlock this technique's potential. This article reviews the WOz method, highlights its usefulness throughout the evolution of a user interface or system, and argues that explicitly supporting WOz prototyping in pervasive computing infrastructures will improve the method's usefulness. The authors describe a design space for WOz simulation in which the wizard takes on controller, moderator, and supervisor roles. They also describe the WOz simulation features of DART, a mixed-reality design and prototyping environment, including a lightweight method for automatically generating WOz interfaces and high-level support for visualizing evaluation results. Finally, the authors use a location-aware audio experience in Atlanta's historic Oakland Cemetery as a case study to illustrate how a wizard operator can play distinct roles throughout an iterative design process.This article is part of a special issue on rapid prototyping.Fri Feb 04 12:44:11 CET 2011Taipei, TaiwanThe 10th Computer Supported Collaborative Learning (CSCL) conference (2005)450 - 459Designing for cross-cultural web-based knowledge building2006activity collaboration constructionism cscl design experiment gmr haifa-edtech ijceell06 ijtme2006 iterative my myown mythesis noe-kaleidoscope sequences-ictmt7 theory thesis toontalk web-based weblabs webreports This paper describes the iterative design of a web-based collaborative workspace used in educational practice, called WebReports. The system’s unique feature is that it allows participants to discuss mathematical and scientific concepts using programmed animated and interactive models of their ideas. Rather than focusing on the specific features of the collaboration tool, we analyze it as part of a constructionist activity system. We describe the context in which the system was developed and used and compare our approach to previous research in the field. Further, we then present two scenarios which demonstrate the system in action. Following that, we attempt to map our cases to an activity theory framework. We highlight several issues in the process of the systems’ development, where the contradictions between the WebReports system and other elements in the activity system shaped its design, and comment on several issues which go beyond the activity theory framework.Fri Feb 04 12:21:27 CET 2011Computers and Education2579-600IDR: a participatory methodology for interdisciplinary design in technology enhanced learning502008CERME-6-patterns IDR KalDesignResearch LDSE LP asld-book asld2011 cal09-patterns design designpatterns eLPBookMor edid9 education haifa-edtech iterative jime08 ldg learning learningdesigngrid lgcbook lp methodology my myown mythesis olnet patterns pedagogicalpatterns polonsky postdocapplication research One of the important themes that emerged from the CAL’07 conference was the failure of technology to bring about the expected disruptive effect to learning and teaching. We identify one of the causes as an inherent weakness in prevalent development methodologies. While the problem of designing technology for learning is irreducibly multi-dimensional, design processes often lack true interdisciplinarity. To address this problem we present IDR, a participatory methodology for interdisciplinary techno-pedagogical design, drawing on the design patterns tradition (Alexander, Silverstein & Ishikawa, 1977) and the design research paradigm (DiSessa & Cobb, 2004). We discuss the iterative development and use of our methodology by a pan-European project team of educational researchers, software developers and teachers. We reflect on our experiences of the participatory nature of pattern design and discuss how, as a distributed team, we developed a set of over 120 design patterns, created using our freely available open source web toolkit. Furthermore, we detail how our methodology is applicable to the wider community through a workshop model, which has been run and iteratively refined at five major international conferences, involving over 200 participants. Fri Aug 06 16:18:19 CEST 2010Journal of the Learning Sciences3391-450Addressing the challenges of inquiry-based learning through technology and curriculum design81999asld-book design education inquiry-based iterative ldg learning learningdesigngrid Inquiry experiences can provide valuable opportunities for students to improve their understanding of both science content and scientific practices. However, the implementation of inquiry learning in classrooms presents a number of significant challenges. We have been exploring these challenges through a program of research on the use of scientific visualization technologies to support inquiry-based learning in the geosciences. In this paper, we describe five significant challenges to implementing inquiry-based learning and present strategies for addressing them through the design of technology and curriculum. We present a design history covering four generations of software and curriculum to show how these challenges arise in classrooms and how the design strategies respond to them.Fri Aug 06 11:25:03 CEST 2010The Scrum Primer2010agile development iterative methodology scrum software Tue Mar 30 14:21:34 CEST 2010Computer647--56Iterative and Incremental Development: A Brief History362003development incremental iterative software Although many view iterative and incremental development as a modern practice, its application dates as far back as the mid-1950s. Prominent software-engineering thought leaders from each succeeding decade supported IID practices, and many large projects used them successfully. These practices may have differed in their details, but all had a common theme-to avoid a single-pass sequential, document-driven, gated-step approach.Sat Feb 06 16:28:39 CET 2010Proc. Fifth Annual IEEE International Conference on Pervasive Computing and Communications PerCom '0779--86Designing Ubiquitous Computing Systems for Sports Equipment2007components, computing computing, design equipment, hardware iterative process, software sports systems ubiquitous In this paper, we report on a user-centered, iterative design process for augmenting sports equipment with ubiquitous computing technology. In several design iterations, a fully working system for training and physiotherapy has been developed and deployed using hard- and software components of ubiquitous computing technology. We report on the design and development process that led to this system. Based on our experience we generalize the specific processes to general ubicomp systems. The validity of our approach has been verified by a larger user studyWed Sep 09 19:13:38 CEST 2009Phys. Rev. BMarch126884--6895Ab initio calculations of quasiparticle band structure in correlated systems: LDA++ approach571998Green's Hubbard Kondo ab band calculations, compounds, correlated correlations, density effect, effective electron function functional initio iterative localised mass, metal-insulator methods, mixed model, perturbation quasiparticles, states strongly structure, systems, theory, transition, valence Wed Sep 09 11:33:46 CEST 2009ECML/PKDD (2)conf/pkdd/2009-247-62Lecture Notes in Computer ScienceSimulated Iterative Classification A New Learning Procedure for Graph Labeling.578220092009 classification ecml graph iterative label labeling multi pkdd Collective classification refers to the classification of interlinked and relational objects described as nodes in a graph. The Iterative Classification Algorithm (ICA) is a simple, efficient and widely used method to solve this problem. It is representative of a family of methods for which inference proceeds as an iterative process: at each step, nodes of the graph are classified according to the current predicted labels of their neighbors. We show that learning in this class of models suffers from a training bias. We propose a new family of methods, called Simulated ICA, which helps reducing this training bias by simulating inference during learning. Several variants of the method are introduced. They are both simple, efficient and scale well. Experiments performed on a series of 7 datasets show that the proposed methods outperform representative state-of-the-art algorithms while keeping a low complexity.Wed Aug 05 07:35:32 CEST 2009Linear Algebra and its Applications3409--420Global convergene of tridiagonal QR algorithm with origin shifts11968eigenvalue iterative qr shift svd wilkinson Tue Aug 04 07:14:02 CEST 2009In WebDB Workshop at 6th International Conference on Extending Database Technology, EDBT’98172--183Extracting patterns and relations from the world wide web1998CAT CAT-REL-web Dual Iterative Pattern extraction relation Abstract. The World Wide Web is a vast resource for information. At the same time it is extremely distributed. A particular type of data such as restaurant lists may be scattered across thousands of independent information sources in many di erent formats. In this paper, we consider the problem of extracting a relation for such a data type from all of these sources automatically. We present a technique which exploits the duality between sets of patterns and relations to grow the target relation starting from a small sample. To test our technique we use it to extract a relation of (author,title) pairs from the World Wide Web. 1Mon Jul 06 10:30:30 CEST 2009In Proc. AAAI-2000 Workshop on Learning Statistical Models from Relational Data13--20Iterative classification in relational data2000classification collective iterative relational Wed Jun 03 11:20:58 CEST 2009SIAM Journal on Scientific and Statistical Computing2631-644Bi-{CGSTAB}: A Fast and Smoothly Converging Variant of Bi-CG for the Solution of Nonsymmetric Linear Systems131992Bi-CG; CG-S; iterative linear nonsymmetric preconditioning solver; systems; Fri May 15 18:28:54 CEST 2009Proceedings of International Supercomputing Conference82--90Semi--iterative methods on distributed memory multiprocessor architectures1989collocation iterative myown Fri May 15 18:28:54 CEST 200914715-734Iterative line cubic spline collocation methods for elliptic partial differential equations in several dimensions1993collocation iterative myown Tue Mar 03 17:19:04 CET 2009Phys.~Rev.~E4046105Evolving Apollonian networks with small-world scale-free topologies742006iterative large-scale methods systems; topology; Tue Feb 03 11:34:42 CET 2009MagdeburgDecemberFacilitating the Education of Game DevelopmentDiplomarbeit2005computerscience development education educational facilitate game gamedesign gamedevelopment gameprogramming iterative mastersthesis prototyping rapid smalltalk squeak students teaching thesis tool This thesis focuses on game development and educational benefits gained from teaching games to university students. Its primary objective is to outline the basics of game development and show how prototyping tools can help educators set up an academic game development course. In this thesis you will also find a classification of many game development tools used in academia for teaching game development to students. The thesis lists advantages and disadvantages of those development tools for easy comparison. It also introduces different focus points in the education of game development as well as the approaches known to the author. Towards the end it demonstrates a rather extraordinary approach towards a game prototyping tool for academics using the high-level programming and multimedia environment Squeak. While not being used in the industry, it provides a solid learning approach to university students getting introduced to game development and programming. The author has derived some of his arguments for educational game development tools from discussions with industry veterans like Bob Bates, Bruce Shelley, Jochen Hamma, or David A. Smith, and leading game professors in Europe like Mark Overmars. The interviews alone make this thesis an interesting read for anyone remotely interested in supporting the academic offspring for game development. iterativeCommunity for tag(s) iterative