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The Effects of Network Delays on Group Work in Real-Time Groupware [chapter]

Carl Gutwin
ECSCW 2001  
Object-Oriented Approach User can create number of exams in one program, and each of the exams will have its own questions and properties.  ...  Efficiency Many of its built-in commands and functions will enable programmers to create userfriendly environment for the test takers without extensive typing.  ...  Now I feel like I could do so much more if I had more time. Also trust your teammates because nothing can work in a group when there is no trust.  ... 
doi:10.1007/0-306-48019-0_16 dblp:conf/ecscw/Gutwin01 fatcat:nlntrkucgfbqfddwprnvbdknly

Adaptive forward error correction for real-time groupware

Jeff Dyck, Carl Gutwin, Dwight Makaroff
2012 Proceedings of the 17th ACM international conference on Supporting group work - GROUP '12  
In addition, adaptive FEC is the only technique that can maintain a specified level of reliability and also minimize delay as network conditions change.  ...  To address this problem, we investigated the use of an application-level networking technique called adaptive forward error correction (AFEC) for real-time groupware.  ...  to establish its effects on the performance of real-time groupware.  ... 
doi:10.1145/2389176.2389196 dblp:conf/group/DyckGM12 fatcat:p5j2k4shxvguzk4adm3ymwidqy

Using cursor prediction to smooth telepointer jitter

Carl Gutwin, Jeff Dyck, Jennifer Burkitt
2003 Proceedings of the 2003 international ACM SIGGROUP conference on Supporting group work - GROUP '03  
Telepointers are an important type of embodiment in real-time distributed groupware.  ...  In this paper we investigate the use of prediction -commonly used in networked simulations and games -to reduce the effects of jitter on telepointer motion.  ...  We then report on the two experiments and discuss the implications for the design of telepointers in real-time groupware.  ... 
doi:10.1145/958206.958207 fatcat:7cqyexwsp5cexakhzqizskttbe

Using cursor prediction to smooth telepointer jitter

Carl Gutwin, Jeff Dyck, Jennifer Burkitt
2003 Proceedings of the 2003 international ACM SIGGROUP conference on Supporting group work - GROUP '03  
Telepointers are an important type of embodiment in real-time distributed groupware.  ...  In this paper we investigate the use of prediction -commonly used in networked simulations and games -to reduce the effects of jitter on telepointer motion.  ...  We then report on the two experiments and discuss the implications for the design of telepointers in real-time groupware.  ... 
doi:10.1145/958160.958207 dblp:conf/group/GutwinDB03 fatcat:xfkw2excnrf4xnyeesjwhcc7um

The effects of local lag on tightly-coupled interaction in distributed groupware

Dane Stuckel, Carl Gutwin
2008 Proceedings of the ACM 2008 conference on Computer supported cooperative work - CSCW '08  
We tested the effects of local lag in several delay conditions: we found that the technique significantly improved performance, and that users did not rate local lag as more difficult or frustrating to  ...  The main cause of this difficulty is network delay that disrupts people's ability to synchronize their actions with another person.  ...  Network delay and its effects on collaboration Delay is a fact of life in real-world distributed applications because information must be transmitted across a network and processed at the other end before  ... 
doi:10.1145/1460563.1460635 dblp:conf/cscw/StuckelG08 fatcat:xnjp6zojq5duxjfm4tbrxkn4su

Improving interpretation of remote gestures with telepointer traces

Carl Gutwin, Reagan Penner
2002 Proceedings of the 2002 ACM conference on Computer supported cooperative work - CSCW '02  
However, gestures in groupware are often difficult to see and interpret because of disruptions to their motion caused by network jitter.  ...  We carried out an experiment to test the effectiveness of traces in helping people interpret gestures.  ...  ACKNOWLEDGMENTS This work was supported by the Natural Sciences and Engineering Research Council of Canada.  ... 
doi:10.1145/587083.587086 fatcat:krs5ufagkfhilex6kx2jyp34vu

Improving interpretation of remote gestures with telepointer traces

Carl Gutwin, Reagan Penner
2002 Proceedings of the 2002 ACM conference on Computer supported cooperative work - CSCW '02  
However, gestures in groupware are often difficult to see and interpret because of disruptions to their motion caused by network jitter.  ...  We carried out an experiment to test the effectiveness of traces in helping people interpret gestures.  ...  ACKNOWLEDGMENTS This work was supported by the Natural Sciences and Engineering Research Council of Canada.  ... 
doi:10.1145/587078.587086 dblp:conf/cscw/GutwinP02 fatcat:cwzlrvmpqng7rjsroivjacceye

GT/SD

Brian de Alwis, Carl Gutwin, Saul Greenberg
2009 Proceedings of the 1st ACM SIGCHI symposium on Engineering interactive computing systems - EICS '09  
Many tools exist for developing real-time distributed groupware, but most of these tools focus primarily on the performance of the resulting system, or on simplifying the development process.  ...  OVERVIEW OF GT/SD GT/SD is a layered toolkit for building and managing the networking and data sharing of real-time groupware applications.  ...  the effects of delay on group performance [26] .  ... 
doi:10.1145/1570433.1570483 dblp:conf/eics/AlwisGG09 fatcat:37k35plub5dvrnesj7bh7vkvzi

High-performance telepointers

Jeff Dyck, Carl Gutwin, Sriram Subramanian, Christopher Fedak
2004 Proceedings of the 2004 ACM conference on Computer supported cooperative work - CSCW '04  
In this paper, we report on a new implementation of telepointers (HPT) that is designed to provide smooth, timely, and accurate telepointers in real-world groupware: on busy networks, on cable and dialup  ...  Although telepointers are valuable for supporting real-time collaboration, they are rarely seen in commercial groupware applications that run on the Internet.  ...  If groupware is to be used by real groups in the real world, it must work under everyday network conditions. Groupware design should explicitly deal with performance issues.  ... 
doi:10.1145/1031607.1031636 dblp:conf/cscw/DyckGSF04 fatcat:bedymv7zevgwjpzwpocb347tw4

Real time groupware as a distributed system

Saul Greenberg, David Marwood
1994 Proceedings of the 1994 ACM conference on Computer supported cooperative work - CSCW '94  
It also reviews our work-in-progress designing and implementing a library of concurrency schemes in GROUPIUT, a groupware toolkit.  ...  Methods, such as locking, serialization, and their degree of optimism, are shown to have quite different impacts on the interface and how operations are displayed and perceived by group members.  ...  ACKNOWLEDGMENTS This research was supported by the National Sciences and Engineering Research Council of Canada through its strategic and operating grant program.  ... 
doi:10.1145/192844.193011 dblp:conf/cscw/GreenbergM94 fatcat:fx2fdqsonvcfxkybbzgd6mkt7a

Beyond the lan

Jeff Dyck, Carl Gutwin, T. C. Nicholas Graham, David Pinelle
2007 Proceedings of the 2007 international ACM conference on Conference on supporting group work - GROUP '07  
Some of the techniques have been previously reported in the networking literature; therefore, the contribution of this paper is to survey which techniques have been shown to work, over several years, and  ...  By adopting these techniques, groupware designers can dramatically improve network performance on the real-world Internet.  ...  INTRODUCTION The goal of real-time distributed groupware is to support synchronous shared work at a distance.  ... 
doi:10.1145/1316624.1316669 dblp:conf/group/DyckGGP07 fatcat:weihsmk7rjbzrgtjs7mhl6lhsa

Comparing WebRTC video conferencing with Skype in synchronous groupware applications

Asif Hussain, Weigang Wang, Dong-Ling Xu
2017 2017 IEEE 21st International Conference on Computer Supported Cooperative Work in Design (CSCWD)  
Our work indicates that the cost to implement WebRTC is not large in comparison to the number of benefits that can be gained.  ...  A study was carried out to compare an integrated HTML5-based real-time video conferencing solution against a separately installed video conferencing solution in the same webbased meeting support application  ...  One of the less prominent types of applications on the web today are real-time groupware applications.  ... 
doi:10.1109/cscwd.2017.8066671 dblp:conf/cscwd/HussainWX17 fatcat:zm2ntlb2pfcnhcjoxxs3m2iume

Making contact

Andrew Cockburn, Saul Greenberg
1993 Proceedings of the conference on Organizational computing systems - COCS '93  
While groupware is readily available, people on wide area networks-such as the Internet-have considerable trouble contacting each other and setting up groupware connections.  ...  To pinpoint why this occurs, this paper identifies human factors critical to getting a group communicating through groupware.  ...  Ernie Chang, of the Alberta Research Council, motivated us with his insights into the problems of making contact. Sean Brandenburg kept us up to date with his survey of awareness systems.  ... 
doi:10.1145/168555.168559 dblp:conf/group/CockburnG93 fatcat:defi5yerwngsnovulo4vrrbx2y

Adaptive groupware for wireless networks

T. Whalen, J.P. Black
1999 Proceedings WMCSA'99. Second IEEE Workshop on Mobile Computing Systems and Applications  
Current groupware systems do not work well over wireless networks, as a wireless connection is of variable and often poor quality.  ...  Our experiments with a multi-user text editor revealed several strategies for adaptive groupware. Applying these strategies demonstrated a bandwidth reduction in one scenario of over 90%.  ...  Acknowledgments Tara Whalen would like to thank Mike Nidd for technical support of this research and Mark Roseman for many helpful comments on this paper.  ... 
doi:10.1109/mcsa.1999.749274 dblp:conf/wmcsa/WhalenB99 fatcat:vcimwurzevbbpkrlws2r7l7yw4

The rise of mobile computing for Group Decision Support Systems: A comparative evaluation of mobile and desktop

Weigang Wang, Manuele Reani
2017 International Journal of Human-Computer Studies  
Not only both the mobile and the desktop version of the app were used effectively for the group decision tasks chosen for this study, but also the two versions of the application were rated similarly in  ...  Despite an additional groupware middleware layer and a sophisticated user interface rendering layer, both groupware versions have yielded a user-to-user response time sufficient for real-time group interactions  ...  Acknowledgement We would like to thank all the participants of the experiment and group decision-making tasks in our studies reported in this paper.  ... 
doi:10.1016/j.ijhcs.2017.02.008 fatcat:fl527fv6krg2tddlb7zhcgvr3q
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