Search results for "Clipping"

Hits ?▲	Authors	Title	Venue	Year	Link	Author keywords
158	Bengt-Olaf Schneider, Jim van Welzen	Efficient Polygon Clipping for an SIMD Graphics Pipeline.	IEEE Trans. Vis. Comput. Graph.	1998	DBLP DOI BibTeX RDF	single-instruction multiple-data (SIMD) computer, deferred clipping, clip-plane pairs, edge batching, perspective projection, Polygon clipping
116	Daniel Weiskopf, Klaus Engel, Thomas Ertl	Interactive Clipping Techniques for Texture-Based Volume Visualization and Volume Shading.	IEEE Trans. Vis. Comput. Graph.	2003	DBLP DOI BibTeX RDF	Volume rendering, hardware acceleration, clipping, volume shading
109	Xia Lei, Zheng Li, Youxi Tang, Shaoqian Li	Analysis of the Performance of Iterative Estimation and Cancellation of Clipping Non-linear Distortion in OFDM.	FGCN (2)	2007	DBLP DOI BibTeX RDF
88	Mingjun Zhang, Chaman L. Sabharwal	An efficient implementation of parametric line and polygon clipping algorithm.	SAC	2002	DBLP DOI BibTeX RDF	Java swing applet, line clipping, complexity, parametric, polygon clipping
88	Patrick-Gilles Maillot	A New, Fast Method for 2D Polygon Clipping: Analysis and Software Implementation.	ACM Trans. Graph.	1992	DBLP DOI BibTeX RDF	clipping, polygon clipping
85	David L. Milliner, Ernesto Zimmermann, John R. Barry, Gerhard P. Fettweis	Channel state information based LLR clipping in list MIMO detection.	PIMRC	2008	DBLP DOI BibTeX RDF
81	Václav Skala	A new approach to line and line segment clipping in homogeneous coordinates.	Vis. Comput.	2005	DBLP DOI BibTeX RDF	Computer graphics, Duality, Clipping, Projective space, Homogeneous coordinates
77	Jeong-Hyun Kim, Kyusik Chung, Young-Jun Kim 0001, Seok-Hoon Kim, Lee-Sup Kim	Clipping-ratio-independent 3D graphics clipping engine by dual-thread algorithm.	ISCAS	2008	DBLP DOI BibTeX RDF
74	Jaewan Bae, Donghyun Kim, Lee-Sup Kim	An 11M-triangles/sec 3D graphics clipping engine for triangle primitives.	ISCAS (5)	2005	DBLP DOI BibTeX RDF
74	Berthier A. Ribeiro-Neto, Gustavo C. G. Mendonca, Ilmério Silva	Clipping: A Technique for Improving Retrieval Performance.	SCCC	1998	DBLP DOI BibTeX RDF
72	Chandrasekhar Narayanaswami 0001	A parallel polygon-clipping algorithm.	Vis. Comput.	1996	DBLP DOI BibTeX RDF	vertex labeling, parallel, multithreading, Polygon clipping, polygon clipping, polygon clipping
70	Fei Peng, William E. Ryan	MLSD Bounds and Receiver Designs for Clipped OFDM Channels.	IEEE Trans. Wirel. Commun.	2008	DBLP DOI BibTeX RDF
69	Alexey A. Roenko, Vladimir V. Lukin, Igor Djurovic, Xu Zhengguang	A novel clipping technique for filtering FM signals embedded in intensive noise.	Signal Image Video Process.	2009	DBLP DOI BibTeX RDF	Clipping technique, FM signal amplitude estimation, Non-Gaussian noise environment, Probability density function
62	Zhefeng Li, Xiang-Gen Xia 0001	Single-symbol ML decoding for orthogonal and quasi-orthogonal STBC in clipped MIMO-OFDM systems using a clipping noise model with Gaussian approximation.	IEEE Trans. Commun.	2008	DBLP DOI BibTeX RDF
62	Rajesh Krishna Panta, Jean Armstrong	Effects of clipping on the error performance of OFDM in frequency selective fading channels.	IEEE Trans. Wirel. Commun.	2004	DBLP DOI BibTeX RDF
62	Pedro V. Sander, Xianfeng Gu, Steven J. Gortler, Hugues Hoppe, John M. Snyder	Silhouette clipping.	SIGGRAPH	2000	DBLP DOI BibTeX RDF	triangle decimation, texture mapping, level of detail algorithms, rendering algorithms
58	John K. Johnstone	The Bézier Tangential Surface System: a Robust Dual Representation of Tangent Space.	Computing	2004	DBLP DOI BibTeX RDF	Tangent space, tangential surface, Bézier surface, piecewise algebraic curve, dual space
58	Günther Greiner, Kai Hormann	Efficient Clipping of Arbitrary Polygons.	ACM Trans. Graph.	1998	DBLP DOI BibTeX RDF	polygon comparison, clipping
54	Anthony J. Bagnall, Gareth J. Janacek	Clustering Time Series with Clipped Data.	Mach. Learn.	2005	DBLP DOI BibTeX RDF	clustering time series, clipping
54	D. P. Gavidia, Elena V. Zudilova, Peter M. A. Sloot	A Client-Server Engine for Parallel Computation of High-Resolution Planes.	International Conference on Computational Science	2004	DBLP DOI BibTeX RDF	data parallelism, Interactive visualization, client-server, clipping, VTK
54	Johannes Blömer	Denesting by Bounded Degree Radicals.	Algorithmica	2000	DBLP DOI BibTeX RDF	Ear clipping, Reliability, Robustness, Triangulation, Polygon, Experimental analysis, Geometric hashing
50	Ui-Kun Kwon, Dongsik Kim, Gi-Hong Im	Amplitude clipping and iterative reconstruction of MIMO-OFDM signals with optimum equalization.	IEEE Trans. Wirel. Commun.	2009	DBLP DOI BibTeX RDF
50	Dan R. Ghica, Adam Bakewell	Clipping: A Semantics-Directed Syntactic Approximation.	LICS	2009	DBLP DOI BibTeX RDF
50	Luqing Wang, Chintha Tellambura	Clipping-Noise Guided Sign-Selection for PAR Reduction in OFDM Systems.	IEEE Trans. Signal Process.	2008	DBLP DOI BibTeX RDF
50	Václav Skala	A New Line Clipping Algorithm with Hardware Acceleration.	Computer Graphics International	2004	DBLP DOI BibTeX RDF
50	Hans E. Dehlinger	Generative Art: Fuzzy Polygon Clipping in Program Generated Line Oriented Drawings.	EvoWorkshops	2004	DBLP DOI BibTeX RDF
50	Aart J. C. Bik, Milind Girkar, Paul M. Grey, Xinmin Tian	Automatic Detection of Saturation and Clipping Idioms.	LCPC	2002	DBLP DOI BibTeX RDF
50	Thomas L. Springall, Gustav Tollet	A Shading Approach to Non-Convex Clipping.	APL	1990	DBLP DOI BibTeX RDF
47	Steffen Bittner, Peter Zillmann, Gerhard P. Fettweis	Iterative Correction of Clipped and Filtered Spatially Multiplexed OFDM Signals.	VTC Spring	2008	DBLP DOI BibTeX RDF
47	Carola Wenk, Randall Salas, Dieter Pfoser	Addressing the Need for Map-Matching Speed: Localizing Globalb Curve-Matching Algorithms.	SSDBM	2006	DBLP DOI BibTeX RDF
47	Diego Calvanese, Tiziana Catarci, Maurizio Lenzerini, Giuseppe Santucci	The multilingual thesaurus of LAURIN.	SEKE	2002	DBLP DOI BibTeX RDF
47	Diego Calvanese, Tiziana Catarci, Giuseppe Santucci	Building a Digital Library of Newspaper Clippings: The Laurin Project.	ADL	2000	DBLP DOI BibTeX RDF	digital library, user centered design, thesaurus, distributed query
47	Ketan Mulmuley	A Fast Planar Partition Algorithm, II.	J. ACM	1991	DBLP DOI BibTeX RDF	randomized geometric algorithms, computational complexity, computational geometry, hidden surface removal, planar subdivision
46	Yuzuru Tanaka, Kimihito Ito, Jun Fujima	Meme Media for Clipping and Combining Web Resources.	World Wide Web	2006	DBLP DOI BibTeX RDF	meme media, Web application linkage, Web clipping, interoperability, direct manipulation, Web technology
46	Alex Vrenios	Parallel adaptive mobile web clipping.	MSWiM	2003	DBLP DOI BibTeX RDF	mobile internet access, web clipping, parallel processing
46	Duc Huy Bui, Václav Skala	Fast algorithms for clipping lines and line segments in E2.	Vis. Comput.	1998	DBLP DOI BibTeX RDF	Line clipping, Algorithm complexity analysis, Computer graphics, Geometric algorithms, Algorithm complexity
42	Minghu Jiang, Georges G. E. Gielen	Analysis of quantization effects on high-order function neural networks.	Appl. Intell.	2008	DBLP DOI BibTeX RDF	Weight clipping, High order function neural networks, Statistical model, Quantization
42	Anthony J. Bagnall, Chotirat (Ann) Ratanamahatana, Eamonn J. Keogh, Stefano Lonardi, Gareth J. Janacek	A Bit Level Representation for Time Series Data Mining with Shape Based Similarity.	Data Min. Knowl. Discov.	2006	DBLP DOI BibTeX RDF	time series data mining, Kolmogorov complexity, clipping
42	Jihad Qaddour	High peak to average ratio solution in OFDM of 4G mobile systems.	IWCMC	2006	DBLP DOI BibTeX RDF	fourth generation (4G), peak to average ratio, simulations, OFDM, clipping
42	Catherine C. Marshall, Sara A. Bly	Saving and using encountered information: implications for electronic periodicals.	CHI	2005	DBLP DOI BibTeX RDF	electronic publications, design, digital libraries, field study, reading, clipping
42	Minghu Jiang, Georges G. E. Gielen	Backpropagation Analysis of the Limited Precision on High-Order Function Neural Networks.	ISNN (1)	2004	DBLP DOI BibTeX RDF	Weight Clipping, Backpropagation (BP), High Order Function Neural Networks (HOFNN), Quantization
42	William J. Schroeder, Berk Geveci, Mathieu Malaterre	Compatible Triangulations of Spatial Decompositions.	IEEE Visualization	2004	DBLP DOI BibTeX RDF	parallel, triangulation, template, contouring, clipping, Delaunay, adaptive grid, tetrahedrization
39	Ronald Rietman, Jean-Paul M. G. Linnartz	Peak restoration in ofdm receiver with clipping a/d converter.	IEEE Trans. Wirel. Commun.	2008	DBLP DOI BibTeX RDF
39	Khoirul Anwar, Takao Hara, Minoru Okada	An effective iterative clipping for coded CI/OFDM systems over the nonlinearity of SSPA.	PIMRC	2008	DBLP DOI BibTeX RDF
39	Haibing Yang, Tim C. W. Schenk, Peter F. M. Smulders, Erik R. Fledderus	Joint Impact of Quantization and Clipping on Single- and Multi-Carrier Block Transmission Systems.	WCNC	2008	DBLP DOI BibTeX RDF
39	Jorge López Lázaro, Álvaro Barbero Jiménez, José R. Dorronsoro	Simple Clipping Algorithms for Reduced Convex Hull SVM Training.	HAIS	2008	DBLP DOI BibTeX RDF
39	Wen Qi, Jean-Bernard Martens	Tangible user interfaces for 3D clipping plane interaction with volumetric data: a case study.	ICMI	2005	DBLP DOI BibTeX RDF	tangible interface, volume visualization, intersection, volumetric data
39	Hosein Nikopour, Seyed Hamidreza Jamali	On the performance of OFDM systems over a Cartesian clipping channel: a theoretical approach.	IEEE Trans. Wirel. Commun.	2004	DBLP DOI BibTeX RDF
39	Tetsuya Suzuki, Takehiro Tokuda	PSO: A Language for Web Information Extraction and Web Page Clipping.	AH	2004	DBLP DOI BibTeX RDF
39	Seomin Yang, Hyukjoon Lee, Kwangsue Chung, Hwansung Kim	A Content Provider-Specified Web Clipping Approach for Mobile Content Adaptation.	Mobile HCI	2002	DBLP DOI BibTeX RDF
35	Sinja Brandes, Michael Schnell	Interference Mitigation for the Future Aeronautical Communication System in the L-Band.	MCSS	2009	DBLP DOI BibTeX RDF
35	Sandeep Lingam, Sebastian G. Elbaum	Supporting end-users in the creation of dependable web clips.	WWW	2007	DBLP DOI BibTeX RDF	web authoring tools, dependability, end-users
35	Timo Ropinski, Klaus H. Hinrichs	Interactive Volume Visualization Techniques for Subsurface Data.	VISUAL	2005	DBLP DOI BibTeX RDF
35	Shu Hung Leung, Y. Xiong, J. F. Weng, Chi Fuk So, Wing Hong Lau	Performance analysis of nonlinear RLS in mixture noise.	ISCAS (5)	2002	DBLP DOI BibTeX RDF
35	Martin Held	FIST: Fast Industrial-Strength Triangulation of Polygons.	Algorithmica	2001	DBLP DOI BibTeX RDF
35	Asit Dan, Philip S. Yu, Anant Jhingran	Recovery Analysis of Data Sharing Systems under Deferred Dirty Page Propagation Policies.	IEEE Trans. Parallel Distributed Syst.	1997	DBLP DOI BibTeX RDF	Recovery analysis, deferred write, coupled systems, transaction processing, analytic modeling, database systems
31	Hanwen Guo, Minyong Shi, Zhiguo Hong, Rui Yang, Li Zhang	Virtual Artistic Paper-Cut.	Edutainment	2008	DBLP DOI BibTeX RDF	Subdivision Curve, Paper-Cut, NPR, SVG, Contour Extraction, Polygon Clipping
31	Catherine C. Marshall, Sara A. Bly	Sharing encountered information: digital libraries get a social life.	JCDL	2004	DBLP DOI BibTeX RDF	electronic periodicals, encountered information, collaboration, interaction, browsing, field study, reading, clipping
31	Václav Skala, Duc Huy Bui	Extension of the Nicholls-Lee-Nichols algorithm to three dimensions.	Vis. Comput.	2001	DBLP DOI BibTeX RDF	Line clipping, Algorithm complexity analysis, Computer graphics, Geometric algorithms, Algorithm complexity
31	Tomoyuki Nishita, Henry Johan	A Scan Line Algorithm for Rendering Curved Tubular Objects.	PG	1999	DBLP DOI BibTeX RDF	Curved tubular objects, Bézier curve, Bézier Clipping, Rendering, Swept volume, Closest point
31	Marco Mattavelli, Sylvain Brunetton, Daniel Mlynek	A Parallel Multimedia Processor for Macroblock Based Compression Standards.	ICIP (2)	1997	DBLP DOI BibTeX RDF	parallel multimedia processor, macroblock based compression standards, block-based video processing algorithms, DGP, digital generic processor, generic system architecture, pixel processors, RISC controller, video processing algorithms, video effects, window clipping, H.261, 1.7 GIPS, 54 MHz, 0.5 micron, code, video compression, digital filtering, MPEG-2, digital signal processing chips, H.263, SIMD architecture, MPEG-1
31	Michael Teschner, Christian Henn	Mapping volumetric properties on molecular surfaces in real-time.	HICSS (5)	1995	DBLP DOI BibTeX RDF	volumetric properties, solid molecular surface generation, three dimensional grid, template driven procedure, contact surface, Connolly surface, continuously tessellated geometry, computer graphics procedure, molecular property visualization, solid molecular surfaces, multidimensional color coding, property clipping, three dimensional textures, interactive color updates, static scalar field, real-time systems, real-time, computational geometry, texture mapping, interactive systems, information filtering, data visualisation, chemistry, chemistry computing, molecular surfaces, color coding, molecular biophysics
31	Shashi Shekhar, Sivakumar Ravada, Vipin Kumar 0001, Douglas Chubb, Greg Turner	Load Balancing in High Performance GIS: Declustering Polygonal Maps.	SSD	1995	DBLP DOI BibTeX RDF	Declustering Methods, Load-Balancing, Geographic Information Systems, High Performance, Range Query, Polygon Clipping
31	Barry Richards, Yuejun Jiang, H. Choi	On Interval-based Temporal Planning: An IQ Strategy.	ISMIS	1991	DBLP DOI BibTeX RDF	Qualification Problem, Interval Principle, Collapsing and Stretching/Clipping, Temporal Logics, Planning, Constraint Satisfaction, Points, Actions, Intervals, Maximal, Frame Problem
31	Toan N. Nguyen, Phuong Ha Nguyen, Lam M. Nguyen, Marten van Dijk	Batch Clipping and Adaptive Layerwise Clipping for Differential Private Stochastic Gradient Descent.	CoRR	2023	DBLP DOI BibTeX RDF
31	Dac Cu Nguyen, Sergey V. Zavjalov, Anna S. Ovsyannikova, Sergey V. Volvenko, Ekaterina Smirnova, Canh Minh Nguyen	On Application of Hard-Clipping and Soft-Clipping for SEFDM Signal with Optimal Envelope.	NEW2AN/ruSMART (2)	2020	DBLP DOI BibTeX RDF
31	Yier Yan, S. P. Balakannan, Moon Ho Lee	Modified Clipping in Superposition Coding System in Low Region of Clipping Ratio.	ICWN	2008	DBLP BibTeX RDF
31	Shen-Fu Hsiao, Yuan-Nan Chang, Tze-Ching Tien, Kun-Chih Chen	Efficient pre-clipping and clipping algorithms for 3D graphics geometry computation.	APCCAS	2008	DBLP DOI BibTeX RDF
31	Xia Lei, Youxi Tang, Shaoqian Li, Yingtao Li	A minimum clipping power loss scheme for mitigating the clipping noise in OFDM.	GLOBECOM	2003	DBLP DOI BibTeX RDF
31	Takeo Fujii, Masao Nakagawa	Adaptive Clipping Level Control for OFDM Peak Power Reduction Using Clipping and Filtering.	IEICE Trans. Fundam. Electron. Commun. Comput. Sci.	2002	DBLP BibTeX RDF
27	Steffen Bittner, Peter Zillmann, Gerhard P. Fettweis	Equalisation of MIMO-OFDM Signals Affected by Phase Noise and Clipping and Filtering.	ICC	2008	DBLP DOI BibTeX RDF
27	Shang-Kang Deng, Mao-Chao Lin	Recursive Clipping and Filtering With Bounded Distortion for PAPR Reduction.	IEEE Trans. Commun.	2007	DBLP DOI BibTeX RDF
27	Marc Deumal, Ali Behravan, Thomas Eriksson, Joan Lluís Pijoan	Constrained Clipping for Peak Power Reduction of Multicarrier Systems by Tone Reservation.	VTC Spring	2007	DBLP DOI BibTeX RDF
27	Koichi Kamijo, Noboru Kamijo, Masaharu Sakamoto	Electronic clipping system with invisible barcodes.	ACM Multimedia	2006	DBLP DOI BibTeX RDF	2D bar code, invisible ink, uv LED, ubiquitous, cell phone, QR code
27	Haru Ando, Keiko Fujita, Junko Yamagishi, Taro Ishikawa	Content-Clipping System Using Multi-modal Analysis.	ICALT	2006	DBLP DOI BibTeX RDF
27	Frank Dévai	A Speculative Approach to Clipping Line Segments.	ICCSA (1)	2006	DBLP DOI BibTeX RDF
27	Jun Fujima, Aran Lunzer, Kasper Hornbæk, Yuzuru Tanaka	C3W: clipping, connecting and cloning for the web.	WWW (Alternate Track Papers & Posters)	2004	DBLP DOI BibTeX RDF	Web application linkage, intelligentPad, subjunctive, interfaces, Web navigation
27	Tina M. Nicholl, D. T. Lee, Robin A. Nicholl	An efficient new algorithm for 2-D line clipping: Its development and analysis.	SIGGRAPH	1987	DBLP DOI BibTeX RDF
23	Paris Smaragdis	Dynamic Range Extension Using Interleaved Gains.	IEEE Trans. Speech Audio Process.	2009	DBLP DOI BibTeX RDF
23	Ali Alsam, Ivar Farup	Colour Gamut Mapping as a Constrained Variational Problem.	SCIA	2009	DBLP DOI BibTeX RDF
23	Sergey V. Zhidkov	Analysis and comparison of several simple impulsive noise mitigation schemes for OFDM receivers.	IEEE Trans. Commun.	2008	DBLP DOI BibTeX RDF
23	Xiao-Xin Zhang, Yuping Zhao	Joint Estimation for Both AGC and DC Based on Distribution Function for OFDM Systems.	ICC	2008	DBLP DOI BibTeX RDF
23	Tetsuya Takiguchi, Jun Adachi, Yasuo Ariki	Audio-Based Video Editing with Two-Channel Microphone.	MUE	2008	DBLP DOI BibTeX RDF	2ch microphones, audio, video editing
23	Qi Zhang 0023, Roy Eagleson, Terry M. Peters	Gpu-Based Image Manipulation and Enhancement Techniques for Dynamic Volumetric Medical Image Visualization.	ISBI	2007	DBLP DOI BibTeX RDF
23	Stefan Bruckner, Sören Grimm, Armin Kanitsar, M. Eduard Gröller	Illustrative Context-Preserving Exploration of Volume Data.	IEEE Trans. Vis. Comput. Graph.	2006	DBLP DOI BibTeX RDF	volume rendering, Illustrative visualization, focus+context techniques
23	Brendon J. C. Schmidt, Chi Ng, Patrick Yien, Christina Harris, Ushodaya Saripalle, Andrea Price, Simon Brewer, Giuseppe Scelsi, Robert Slaviero, Jean Armstrong	Efficient Algorithms for PAPR Reduction in OFDM Transmitters Implemented using Fixed-Point DSPs.	VTC Spring	2006	DBLP DOI BibTeX RDF
23	Iddo Hanniel, Gershon Elber	Subdivision Termination Criteria in Subdivision Multivariate Solvers.	GMP	2006	DBLP DOI BibTeX RDF
23	Hua Yang, Kenneth Rose	Advances in recursive per-pixel estimation of end-to-end distortion for application in H.264.	ICIP (2)	2005	DBLP DOI BibTeX RDF
23	Woon S. Gan, Sen M. Kuo	Analysis of nonlinear residual echo suppressors for telecommunications [voice communication applications].	ISCAS (6)	2005	DBLP DOI BibTeX RDF
23	Frank Dévai	Analysis of the Nicholl-Lee-Nicholl Algorithm.	ICCSA (1)	2005	DBLP DOI BibTeX RDF
23	Yasuhiro Hayakawa, Kensuke Morishita	Development of a Silicon Outer Fence Mold Actuator with Human Compatibility.	ICRA	2004	DBLP DOI BibTeX RDF
23	Nick Lowe, Amitava Datta	A Fragment Culling Technique for Rendering Arbitrary Portals.	International Conference on Computational Science	2003	DBLP DOI BibTeX RDF
23	Young S. Kim, Jaehyoung Lim, Soon J. Hyun, Dongman Lee	WebClipper: A Personal/Community Link Library Builder Based on Web Link Management Technique.	ICADL	2002	DBLP DOI BibTeX RDF
23	Samuel Hans Martin Roth, Patrick Diezi, Markus H. Gross	Triangular Bézier Clippin.	PG	2000	DBLP DOI BibTeX RDF
23	Ethan D. Montag, Mark D. Fairchild	Psychophysical evaluation of gamut mapping techniques using simple rendered images and artificial gamut boundaries.	IEEE Trans. Image Process.	1997	DBLP DOI BibTeX RDF
19	Lung-Jen Wang, Ya-Chun Huang	Non-linear Image Enhancement Using Opportunity Costs.	CICSyN	2010	DBLP DOI BibTeX RDF	nonlinear image enhancement, scaling, clipping, opportunity cost
19	Sandro Leuchter, Dirk Mühlenberg	Distribution of Human-Machine Interfaces in System-of-Systems Engineering.	HCI (8)	2009	DBLP DOI BibTeX RDF	web clipping, interoperability, HMI, portlet, wsrp
19	Bohumír Bastl, Jirí Kosinka, Miroslav Lávicka	A symbolic-numerical envelope algorithm using quadratic MOS patches.	Symposium on Solid and Physical Modeling	2009	DBLP DOI BibTeX RDF	Bézier clipping, MOS surfaces, envelope formula, inner offsets, quadratic patches, trimming
19	Khalid Addi, Samir Adly, Daniel Goeleven, Hassan Saoud	A sensitivity analysis of a class of semi-coercive variational inequalities using recession tools.	J. Glob. Optim.	2008	DBLP DOI BibTeX RDF	Finite variational inequalities, Recession analysis, Positive semidefinite matrices, Clipping circuit, Ideal diode model, Practical diode model, coulomb friction, Convex analysis
19	Les Nelson, Diana K. Smetters, Elizabeth F. Churchill	Keyholes: selective sharing in close collaboration.	CHI Extended Abstracts	2008	DBLP DOI BibTeX RDF	content segmentation, text snippets, collaboration, access control, annotation, tags, information sharing, distributed work, clipping