@comment{{This file has been generated by bib2bib 1.98}}
@comment{{Command line: D:\Local\bin\bib2bib.exe -oc citeOther -ob other.bib -c MYTYPE='Other' my.bib}}
@inproceedings{1989-china,
mytype = {Other},
author = {Kuijk, A. A. M. and Blake, E. H.},
title = {Faster {Phong} shading via angular interpolation},
booktitle = {Proceedings of International Conference on Computer
Aided Design and Computer Graphics},
year = {1989},
pages = {35-41},
location = {Beijing, China},
publisher = {International Academic Publishers},
month = {Aug 10-12}
}
@techreport{1989-faster-phong-rep,
mytype = {Other},
author = {Kuijk, A. A. M. and Blake, E. H.},
title = {Faster {Phong} shading via angular interpolation},
institution = {Centrum voor Wiskunde en Informatica--{\sf CWI}},
year = {1989},
number = {CS-R8909},
address = {Amsterdam}
}
@article{1989-review-hegron,
mytype = {Other},
author = {E. H. Blake},
title = {Review of ``{I}mage Synthesis - Elementary
Algorithms'' by {G. H\'{e}gron}},
journal = {Computer Graphics Forum},
year = {1989},
volume = {8},
pages = {359}
}
@techreport{1990-intro-rep,
mytype = {Other},
author = {Blake, E. H.},
title = {Introduction to Aspects of Object Oriented Graphics},
institution = {Centrum voor Wiskunde en Informatica---{\sf CWI}},
year = {1990},
number = {CS-R9009},
address = {Amsterdam}
}
@techreport{1992-architecture-rep,
mytype = {Other},
myurl = {1992-architecture-rep.pdf},
author = {A. A. M. Kuijk and E. H. Blake and ten Hagen,
P. J. W.},
title = {An architecture for interactive raster graphics},
institution = {Centrum voor Wiskunde en Informatica---{\sf CWI}},
year = {1992},
number = {CS-R9229},
address = {Amsterdam}
}
@techreport{1992-ffast-rep,
mytype = {Other},
myurl = {1992-ffast-rep.pdf},
author = {E. H. Blake and V. C. J. Disselkoen and
A. A. M. Kuijk},
title = {Faster {Phong} Shading},
institution = {Centrum voor Wiskunde en Informatica---{\sf CWI}},
year = {1992},
number = {CS-R9228}
}
@techreport{1992-xinposse-rep,
mytype = {Other},
myurl = {1992-xinposse-rep.pdf},
author = {Guravage, M. A. and Blake, E. H. and Kuijk,
A. A. M.},
title = {{XInPosse}: Structural simulation for graphics
hardware},
institution = {Centrum voor Wiskunde en Informatica---{\sf CWI}},
year = {1992},
number = {CS-R9208},
address = {Amsterdam}
}
@inproceedings{1994-hardware,
mytype = {Other},
myurl = {1994-hardware.pdf},
author = {Kuijk, A. A. M. and Blake, E. H. and Steffens,
E. H.},
title = {Experience with a Difference Engine for Graphics},
booktitle = {Ninth Eurographics Workshop on Graphics Hardware},
editor = {Wolfgang Stra{\ss}er},
year = {1994},
pages = {36-47},
organization = {Eurographics},
address = {SINTEF, Oslo, Norway},
month = {September 12-13}
}
@unpublished{1994-hci,
mytype = {Other},
author = {E. H. Blake and D. H. Cook},
title = {Notes on Human-Computer Interaction},
note = {Course Notes for Computer Science Third Year Module
on Human-Computer Interaction. University of Cape
Town. 56pp},
year = {1994},
month = {March}
}
@book{1994-policy,
mytype = {Other},
myurl = {1994-policy.pdf},
author = {George F. R. Ellis},
title = {Science Research Policy in {South} {Africa}},
publisher = {The Royal Society of South Africa},
year = {1994},
url = {http://www.mth.uct.ac.za/~ellis/scipol.pdf},
note = {A Discussion Document. E.\ Blake cited as
contributor (Section on Computer Science)}
}
@inproceedings{1995-ewppg-5,
mytype = {Other},
myurl = {1995-ewppg-5.pdf},
author = {Edwin H. Blake and Henk A. Goosen},
title = {The ``No-Paradigm'' Programming Paradigm for
Information Visualization},
editor = {Remco C. Veltkamp and Edwin H. Blake},
booktitle = {Proceedings of the fifth Eurographics Workshop on
Programming Paradigms in Graphics},
year = {1995},
organization = {Eurographics},
publisher = {CWI, Amsterdam},
month = {September 2-3},
isbn = {90-6196-458-X}
}
@article{1996-engnews,
mytype = {Other},
author = {Jacqui Steven},
title = {Information Technology: The problems of adapting to
accelerating change},
journal = {Martin Creamer's Engineering News},
month = {August 8},
year = {1996},
pages = {31},
note = {Interview by journalist}
}
@book{1996-isad-pilot,
mytype = {Other},
author = {NITF},
title = {Proposed {S}outh {A}frican Pilot Projects},
publisher = {Department of Arts, Culture, Science and Technology},
year = {1996},
note = {South African position paper at the G7 Information
Society and Development Conference, Gallagher
Estates, Midrand, 13-15 May 1996.\\ Author of
proposal for project of Centres of Excellence --- 1
of the 5 pilot projects}
}
@techreport{1997-2vs3wavelets,
mytype = {Other},
myurl = {1997-2vs3wavelets.pdf},
author = {Marais, P. C. and Blake, E. H. and Kuijk, A. A. M.},
title = {Quadratic vs Cubic Spline-Wavelets for Image
Representation and Compression},
institution = {Centrum voor Wiskunde en Informatica---{\sf CWI}},
year = {1997},
number = {PNA-R9717},
month = {November},
address = {Amsterdam},
url = {http://ftp.cwi.nl/CWIreports/PNA/PNA-R9717.pdf},
issn = {1386-3711}
}
@techreport{1997-uurep,
mytype = {Other},
myurl = {1997-uurep.pdf},
author = {Richard H. M. C. Kelleners and Remco C. Veltkamp and
Edwin H. Blake},
title = {Constraints on Objects, Conceptual Model and
Implementation},
institution = {Utrecht University},
year = {1997},
number = {RUU-CS-97-11},
month = {May}
}
@inproceedings{1998-hunt-gath,
mytype = {Other},
myurl = {1998-hunt-gath.pdf},
author = {Louis Liebenberg and Edwin Blake and Lindsay
Steventon and Karel Benadie and James Minye},
title = {Integrating Traditional Knowledge with Computer
Science for the Conservation of Biodiversity},
booktitle = {8th International Conference on Hunting and
Gathering Societies Foraging and Post-Foraging
Societies: History, Politics, and Future},
year = {1998},
url = {http://www.cybertracker.co.za/IntegratingKnowledge.html},
note = {Osaka, 26 - 30 October 1998}
}
@techreport{1998-mason,
mytype = {Other},
myurl = {1998-mason.pdf},
author = {Ashton E. W. Mason and Edwin H. Blake},
title = {A Graphical Representation of the State Spaces of
Hierarchical Level of Detail Scene Descriptions},
institution = {University of Cape Town, Department of Computer
Science},
year = {1998},
number = {CS98-09-01},
annote = {We present a new method for representating the state
spaces of hierarchical level of detail descriptions,
or scene descriptions with multiple hierarchical
levels of detail. This representation, called a
level of detail graph, permits the investigation and
exploration of the state spaces of non-hierarchical
and hierarchical level of detail optimization
algorithms. We present algorithms for generating
the level of detail graph representations of
arbitrary level of detail descriptions. As an
example of the use of level of detail graph
representations we demonstrate the equivalence of
two published level of detail optimization
algorithms whose equivalence was previously stated
without proof.}
}
@article{1998-newscientist,
mytype = {Other},
myurl = {1998-newscientist.pdf},
author = {Laura Spinney},
title = {Keeping track},
journal = {New Scientist},
month = {31 October},
year = {1998},
pages = {25},
number = {2158},
url = {http://www.newscientist.com/article.ns?id=mg16021583.600},
note = {This article highlights the development of the Cyber
Tracker system that recently won a Rolex Award for
Enterprise. Edwin Blake and UCT are mentioned
explicitly.}
}
@inproceedings{1998-satnac-vis,
mytype = {Other},
myurl = {1998-satnac-vis.pdf},
author = {Oliver Saal and Jinsong Feng and A. E. Krzesinski
and E. H. Blake},
title = {Visualization of {ATM} Network Connectivity and
Topology},
pages = {71-78},
booktitle = {SATNAC 98: 1st Annual South African
Telecommunications, Networks and Applications
Conference},
year = {1998},
note = {7th to 10th September 1998, Cape Town}
}
@inproceedings{1998-satnac-vr,
mytype = {Other},
myurl = {1998-satnac-vr.pdf},
author = {Juan Casanueva and Edwin Blake},
title = {Presence in a Distributed Virtual Environment for
Cooperative Visualization},
pages = {510-517},
booktitle = {SATNAC 98: 1st Annual South African
Telecommunications, Networks and Applications
Conference},
year = {1998},
note = {7th to 10th September 1998, Cape Town}
}
@inproceedings{1999-SATNAC-ATM,
mytype = {Other},
author = {Jinsong Feng and A. E. Krzesinski and E. H. Blake},
title = {A management tool for {ATM} virtual path connection
networks},
booktitle = {Proceedings of the 2nd South African
Telecommunications, Networks and Applications
Conference (SATNAC'99)},
year = {1999},
month = {September},
address = {Durban, South Africa}
}
@inproceedings{1999-SATNAC-copres,
mytype = {Other},
author = {J. Casanueva and E. H. Blake},
title = {Presence and co-presence in collaborative virtual
environments},
booktitle = {Proceedings of the 2nd South African
Telecommunications, Networks and Applications
Conference (SATNAC'99)},
year = {1999},
month = {September},
pages = {120-125},
address = {Durban, South Africa}
}
@inproceedings{1999-SATNAC-face,
mytype = {Other},
myurl = {1999-SATNAC-face.pdf},
author = {D. Burford and E. H. Blake},
title = {Real-time facial animation for avatars in
collaborative virtual environments},
booktitle = {Proceedings of the 2nd South African
Telecommunications, Networks and Applications
Conference (SATNAC'99)},
year = {1999},
month = {September},
pages = {178-183},
address = {Durban, South Africa}
}
@inproceedings{1999-SATNAC-presence,
mytype = {Other},
myurl = {1999-SATNAC-presence.pdf},
author = {C. Johns and D. Sellars and M. Daya and J. Casanueva
and E. H. Blake},
title = {The effects of presence on small group collaboration
in a collaborative virtual environment},
booktitle = {Proceedings of the 2nd South African
Telecommunications, Networks and Applications
Conference (SATNAC'99)},
year = {1999},
pages = {126-131},
month = {September},
address = {Durban, South Africa}
}
@inproceedings{1999-SATNAC-visual-atm,
mytype = {Other},
author = {Oliver Saal and A. E. Krzesinski and E. H. Blake},
title = {Visualization of {ATM} network connectivity and
topology},
booktitle = {Proceedings of the 2nd South African
Telecommunications, Networks and Applications
Conference (SATNAC'99)},
year = {1999},
month = {September},
address = {Durban, South Africa}
}
@techreport{1999-mason,
mytype = {Other},
myurl = {1999-mason.pdf},
author = {Ashton E. W. Mason and Edwin H. Blake},
title = {A Predictive Incremental Hierarchical Level of
Detail Optimization Algorithm},
institution = {University of Cape Town, Department of Computer
Science},
year = {1999},
number = {CS99-04-00},
note = {This report is similar to the Eurographics (Computer
Graphics Forum) paper \cite{1997-eg} but corrects an
important error in the published paper, so should be
preferred},
annote = {We present a new hierarchical level of detail
optimization algorithm that is predictive and so may
be used for active frame rate control. We base our
approach on earlier work demonstrating the
equivalence of level of detail optimization to the
Multiple Choice Knapsack Problem (MCKP). We show
that this equivalence is broken for hierarchical
level of detail scene descriptions in which shared
representations may be provided for groups of
objects, and that the level of detail optimization
problem for such descriptions is equivalent to a
generalization of the MCKP which we call the
Hierarchical MCKP. We present a greedy approximation
algorithm for this Hierarchical MCKP whose solution
we prove is guaranteed to be at least half-optimal
for a useful subproblem in which more expensive
selections provide diminishing returns. Furthermore
we show that the typical behaviour of the algorithm
is much better than half-optimal and that the
instances in which it is not are relatively
rare. The level of detail optimization algorithm we
present is an incremental version of this greedy
algorithm designed to exploit frame-to-frame
coherence by basing its initial solution on the
solution found for the previous frame. We prove the
equivalence of the two algorithms by considering
their state spaces and showing that both reach the
same solution state.}
}
@article{1999-time,
mytype = {Other},
author = {Peter Hawthorne},
title = {Keeping Track of a Dying Art},
journal = {Time},
year = {1999},
volume = {154},
number = {15},
pages = {50},
month = {October 11},
note = {Article in Special Report on the Communications
Revolution. Deals with the CyberTracker project and
mentions that the system was developed ``in
collaboration with'' the Department of Computer
Science at the University of Cape Town.}
}
@inproceedings{2000-SATNAC-ATMmetaphor,
mytype = {Other},
myurl = {2000-SATNAC-ATMmetaphor.pdf},
author = {O. Saal and E. H. Blake and A.E. Krzesinski},
title = {Engineering Effective Visual Metaphors for {ATM}
Management Applications},
booktitle = {Proceedings of the 3rd South African
Telecommunications, Networks and Applications
Conference (SATNAC'00)},
year = {2000},
month = {September},
address = {Stellenbosch, South Africa},
isbn = {0-620-26494},
annote = {Also CS Dept Technical Report CS00-14-00}
}
@inproceedings{2000-SATNAC-ATMpath,
mytype = {Other},
myurl = {2000-SATNAC-ATMpath.pdf},
author = {J. Feng and E.H. Blake},
title = {Visualization of {ATM} virtual path connection
networks},
booktitle = {Proceedings of the 3rd South African
Telecommunications, Networks and Applications
Conference (SATNAC'00)},
year = {2000},
month = {September},
address = {Stellenbosch, South Africa},
isbn = {0-620-26494}
}
@inproceedings{2000-SATNAC-face,
mytype = {Other},
myurl = {2000-SATNAC-face.pdf},
author = {Dennis Burford and Edwin Blake},
title = {Real-Time Facial Animation for Avatars in
Collaborative Virtual Environments},
booktitle = {Proceedings of the 3rd South African
Telecommunications, Networks and Applications
Conference (SATNAC'00)},
year = {2000},
month = {September},
address = {Stellenbosch, South Africa},
isbn = {0-620-26494}
}
@inproceedings{2000-SATNAC-gems,
mytype = {Other},
myurl = {2000-SATNAC-gems.pdf},
author = {Richard Southern and Edwin Blake and Patrick Marais},
title = {{GeMS}: A generic implementation for memoryless
polygonal simplification},
booktitle = {Proceedings of the 3rd South African
Telecommunications, Networks and Applications
Conference (SATNAC'00)},
year = {2000},
month = {September},
address = {Stellenbosch, South Africa},
isbn = {0-620-26494}
}
@inproceedings{2000-SATNAC-groupex,
mytype = {Other},
myurl = {2000-SATNAC-groupex.pdf},
author = {Juan Casanueva and Edwin Blake},
title = {Small Group Experiments in Collaborative Virtual
Environments},
booktitle = {Proceedings of the 3rd South African
Telecommunications, Networks and Applications
Conference (SATNAC'00)},
year = {2000},
month = {September},
address = {Stellenbosch, South Africa},
isbn = {0-620-26494}
}
@techreport{2000-Southern,
mytype = {Other},
myurl = {2000-Southern.pdf},
author = {Richard Southern and Patrick Marais and Edwin
H. Blake},
title = {Wavelets for Multi-resolution Analysis of Triangular
Surface Meshes},
institution = {University of Cape Town, Department of Computer
Science},
year = {2000},
number = {CS00-11-00},
annote = {The application of Wavelets to the Multi-resolution
Analysis of surfaces provides an elegant,
mathematically rigorous framework for the
implementation of subdivision surfaces. We present a
method similar to [Lou95] for multiresolution
analysis of surfaces with subdivision
connectivity. However, due to error incurred during
surface remeshing (as with [EDD 95, LSS 98]) we find
Wavelets an unsuitable technique for feature
preservation during surface compression.},
documenturl = {http://pubs.cs.uct.ac.za/archive/00000286/}
}
@techreport{2000-casanueva,
mytype = {Other},
myurl = {2000-casanueva.pdf},
author = {Juan Casanueva and Edwin Blake},
title = {Presence in a Distributed Virtual Environment},
institution = {University of Cape Town, Department of Computer
Science},
year = {2000},
number = {CS00-05-00},
annote = {Collaborative Virtual Environments (CVEs) involve
the use of a distributed architecture, and advanced
interactive user interfaces to create a `shared'
sense of space where users located in different
physical locations can interact. An important
objective is to provide users with an illusion that
the machine mediated experience is not mediated. The
extent of this illusion is measured by the sense of
`presence' experienced. We explore `shared
presence' in a Cooperative Virtual Environment, that
is providing the participants with a sense of
presence of others in the environment, thus having a
feeling that they are directly cooperating with real
people. We describe our prototype system for a
`non-immersive' distributed virtual
environment. We provide preliminary results on
factors which increase the sense of `shared
presence' in a virtual environment. These include
the use of avatars to represent the participants,
providing simple communication and interaction with
the environment. Our prototype has served as a good
basis for our future work towards shared presence by
highlighting areas that require attention, (such as
providing communicative behaviour to avatars) and
indicating good prospects such as the importance of
how one represents the avatars.},
documenturl = {http://pubs.cs.uct.ac.za/archive/00000270/}
}
@techreport{2000-casanueva-b,
mytype = {Other},
myurl = {2000-casanueva-b.pdf},
author = {Juan Casanueva and Edwin Blake},
title = {Presence and Co-Presence in Collaborative Virtual
Environments},
institution = {University of Cape Town, Department of Computer
Science},
year = {2000},
number = {CS00-06-00},
annote = {Collaborative Virtual Environments (CVEs) involve
the use of a distributed architecture, and advanced
interactive user interfaces to create a shared sense
of space where users located in different physical
locations can interact. In this paper, we describe
two experimental designs which use subjective
evaluation methods to asses personal presence and
co-presence in a CVE. Personal presence is having a
feeling of ``being there'' in the CVE yourself.
Co-presence is having a feeling that one is in the
same place as the other participants, and that one
is collaborating with real people. The first
experiment investigates the effects of avatar
appearance and functionality (gestures and facial
expressions) on presence and co-presence in a
CVE. The second experiment investigates the effects
of small group collaboration on co-presence in a
CVE},
documenturl = {http://pubs.cs.uct.ac.za/archive/00000271/}
}
@techreport{2000-casanueva-c,
mytype = {Other},
myurl = {2000-casanueva-c.pdf},
author = {Juan Casanueva and Edwin Blake},
title = {The Effects of Group Collaboration on Presence in a
Collaborative Virtual Environment},
institution = {University of Cape Town, Department of Computer
Science},
year = {2000},
number = {CS00-07-00},
annote = {Presence in Collaborative Virtual Environments
(CVEs) can be classified into personal presence and
co-presence. Personal presence is having a feeling
of ``being there'' in the CVE
yourself. Co-presence is having a feeling that one
is in the same place as the other participants, and
that one is collaborating with real people. In this
paper we describe an experiment used to investigate
the effects that small group collaboration and
interaction has on personal presence and specially
co-presence in a CVE. We hypothesise that
collaboration and interaction enhances co-presence
in a CVE. We found that there was a large difference
in co-presence between two CVEs which produced
different levels of collaboration and
interaction. This supports our hypotheses that just
having virtual representations of others is not
sufficient to create a high sense of co-presence,
and that one needs collaboration and interaction in
order to enhance co-presence in a CVE. We measured
personal presence subjectively, using a
questionnaire developed by Slater et al. We have
developed a co-presence questionnaire which assesses
the levels of co-presence subjectively. We have also
developed a collaboration questionnaire which
measures group collaboration subjectively, as well
as the degree of enjoyment and comfort with others
in the group.},
documenturl = {http://pubs.cs.uct.ac.za/archive/00000285/}
}
@techreport{2000-saal,
mytype = {Other},
myurl = {2000-saal.pdf},
author = {Oliver Saal and Edwin H. Blake},
title = {Visualisation of ATM network connectivity and
topology},
institution = {University of Cape Town, Department of Computer
Science},
year = {2000},
number = {CS00-13-00},
annote = {We have visualised ATM network connectivity with
respect to traffic service classes and the logical
and the physical structure of the network. We are
developing a tool to display information specific to
how an ATM network can alter its virtual path
connection network (VPCN) as well as providing a
list of visual metaphors to convey this information
in a compact view. Our intention is to provide
administrators and researchers with a concise
display of the changes in the virtual structure of
an ATM network.},
documenturl = {http://pubs.cs.uct.ac.za/archive/00000287/}
}
@techreport{2001-aggressive,
mytype = {Other},
myurl = {2001-aggressive.pdf},
author = {Shaun Nirenstein and James Gain and Edwin Blake},
title = {Aggressive Visibility Pre-processing with Adaptive
Sampling},
institution = {University of Cape Town, Department of Computer
Science},
year = {2001},
number = {CS01-01-00},
annote = {At the expense of a small error in visibility
classification, we remove all invisible
polygons. Thresholding and heuristics allows fine
control over the behaviour of this error. Our
technique is applicable to both concave and convex
polygons. It exhibits sublinear computational
complexity in the number of scene polygons and
logarithmic complexity in the number of cells, while
effectively exploiting graphics hardware. The
technique is classified as an aggressive from-region
method in that it falsely excludes a small subset of
visible polygons and estimates visibility on a per
cell basis. A kd-tree hierarchy of visibility cells
is built by sampling visibility across their
surfaces adaptively. Sampling is guided by a novel
error heuristic and produces, by adaptive
sub-division, a quad-tree like structure. We have
applied our technique to both a standard building
scenes and a highly complex natural scene. The
results demonstrate that significant culling (94.5\%
average) with low error rates (0.687\% average) can
be achieved with such scenes in a reasonable period
of time.}
}
@techreport{2001-burford,
myurl = {2001-burford.pdf},
author = {Dennis Burford and Edwin H. Blake},
title = {Face-to-Face Implies No Interface},
institution = {University of Cape Town, Department of Computer
Science},
year = 2001,
mytype = {Other},
number = {CS01-15-00},
annote = {It is important to design user interfaces that are
intuitive and "natural" to use. This is especially
true when computers mediate communication and
interaction between people. Collaborative virtual
environments (CVEs) encourage just this type of
direct interaction. Because facial expressions are
essential to face-to-face communication, we believe
facial animation for avatars is important to virtual
communications of this sort. We present a system for
real-time expression tracking and facial animation
using facial markers, low-cost cameras and PCs. We
have tested our system with live video input and
animated three different types of faces, including a
3-D muscle model.}
}
@techreport{2001-mapstr,
mytype = {Other},
myurl = {2001-maps.pdf},
author = {Cathryn Johns and Edwin H. Blake},
title = {Cognitive Maps: Facilitation of Learning Through the
Use of Innate Spatial Abilities},
institution = {University of Cape Town, Department of Computer
Science},
year = {2001},
number = {CS01-04-00},
annote = {See Afrigraph 2001 publication with similar title}
}
@techreport{2001-memoryless,
mytype = {Other},
myurl = {2001-memoryless.pdf},
author = {Richard Southern and Patrick Marais and Edwin
H. Blake},
title = {Evaluation of Memoryless Simplification},
institution = {University of Cape Town, Department of Computer
Science},
year = {2001},
number = {CS01-18-00}
}
@inproceedings{2002-art,
mytype = {Other},
myurl = {2002-art.pdf},
author = {Gary Marsden and Katherine Malan and Edwin Blake},
title = {Using digital technology to access and store {A}frican art},
booktitle = {CHI '02 extended abstracts on Human factors in
computing systems},
pages = {528--529},
year = 2002,
address = {Minneapolis, Minnesota, USA},
doi = {http://doi.acm.org/10.1145/506443.506464}
}
@inproceedings{2002-blake,
mytype = {Other},
myurl = {2002-blake.pdf},
author = {Edwin Blake},
title = {Extended Abstract: a field computer for animal
trackers},
booktitle = {CHI '02 extended abstracts on Human factors in
computing systems},
pages = {532-533},
year = {2002},
address = {Minneapolis, Minnesota, USA},
doi = {http://doi.acm.org/10.1145/506443.506466},
isbn = {1-58113-454-1}
}
@techreport{2002-hons-paper,
mytype = {Other},
myurl = {2002-hons-paper.pdf},
author = {Sarah Brown and Ilda Ladeira and Cara Winterbottom
and Edwin H. Blake},
title = {An Investigation on the Effects of Mediation in a
Storytelling Virtual Environment},
institution = {Department of Computer Science, University of Cape
Town},
year = {2002},
number = {CS02-08-00},
annote = {This paper presents a study that explores the use of
mediation in virtual environments (VEs) used for
cultural storytelling. A VE was created in which a
traditional San story was told. Two forms of
mediation were used: visual mediation and audio
mediation. Four versions of the VE were implemented,
differentiated by the type and amount of mediation
included. 77 subjects were tested, each experiencing
only one of the versions. Measurements of presence,
story involvement and enjoyment of each user were
taken. A factorial analysis of variance, with a
between-subjects design was used. Audio mediation
was found to have an effect on presence(F = 138.8, p
< 0.002). Visual mediation was found to increase
story involvement (F = 9.49, p < 0.003). Both the
interaction between the mediations, and audio
mediation increased enjoyment (F = 5.87, p < 0.02
and F = 4.01, p < 0.05 respectively). Therefore, the
use of subtle mediation that appears natural in the
VE setting was shown to be effective. The effects of
audio mediation on presence suggests that it is an
important addition to any VE. And, in the context of
virtual storytelling, visual mediation is valuable
in conveying a narrative more successfully},
documenturl = {http://pubs.cs.uct.ac.za/archive/00000145/}
}
@inproceedings{2002-lewis,
mytype = {Other},
myurl = {2002-lewis.pdf},
author = {John A. Lewis and William D. Tucker and Edwin
H. Blake},
year = 2002,
title = {{SoftBridge}: An Architecture for building
{IP}-Based Bridges over the Digital Divide},
booktitle = {Proceedings of South African Telecommunications and
Networking Application Conference (SATNAC 2002)},
publisher = {CD ROM Publication},
pages = {18},
organization = {SATNAC, Telkom},
month = {1-4, September},
address = {Champagne Sports Resort, KwaZulu-Natal},
keywords = {Bridging, Text To Speech, Automatic Speech
Recognition, IP Telephony, Voice over IP,
Collaboration, Instant Messaging},
documenturl = {http://pubs.cs.uct.ac.za/archive/00000050/},
annote = {Users and computing equipment have varying
capabilities that include the abilities to exchange
test, audio and engage in high bandwith
communication. As the technological options
increase, effective communication between the
different media has to be able to bridge across
these options: the bridges have to take into account
network quality, end-user equipment capabilities as
well as user capabilities and preferences. Our
research proposes a SoftBridge, an abstracted
communications platform for the construction of
applications across the disparate capabilities found
in various Digital Divides. We outline the
architecture and the requirements that the
SoftBridge has to fulfill. An approach and some
initial work is described.}
}
@techreport{2002-schemata,
mytype = {Other},
myurl = {2002-schemata.pdf},
author = {David Nunez and Edwin Blake},
title = {The interaction of schemata activation and stimulus
quality as a determinant of presence in virtual
environments},
institution = {University of Cape Town, Department of Computer
Science},
year = {2002},
number = {CS02-23-00},
annote = {Many presence studies show the importance of display
variables in determining presence. However, very
little empirical evidence exists to support
psychological determinants of presence. We argue
from a cognitive presence perspective that presence
can be considered as an extension of perception, a
process which is known to be significantly affected
by the perceiver's mental state. We support our
argument by presenting the results of a large study
(n=103) in which users were conceptually primed by
reading a booklet either related to or unrelated to
a VE and then were left to explore that VE with
either a high quality or low quality display. We
found a significant interaction effect between
display quality and priming, showing that the mental
state of the user sets a context which affects their
experience of presence as measured using two scales.
We conclude that, like perception, presence does not
simply occur as a consequence of sensory input only,
but that it is a constructive process in which the
VE user creates an experience using both sensory and
psychological inputs.}
}
@inproceedings{2003-chetty,
mytype = {Other},
myurl = {2003-chetty.pdf},
author = {Marshini Chetty and William D. Tucker and Edwin
H. Blake},
title = {Using Voice over {IP} to Bridge the Digital Divide
--- A Critical Action Research Approach},
booktitle = {Proceedings of South African Telecommunications and
Networking Application Conference (SATNAC 2003)},
year = {2003},
organization = {SATNAC, Telkom},
publisher = {CD ROM Publication,},
isbn = {0-620-30949-0},
documenturl = {http://pubs.cs.uct.ac.za/archive/00000051/},
annote = {There is a great disparity between those who have
access to Information and Communication Technologies
(ICTs) and those that do not. This phenomenon forms
part of the \emph{Digital Divide}. Many ICTs may be
used to help overcome this divide if they are
applied in a useful way, providing locally
applicable content and services. Critical Action
Research (CAR) is an approach used to develop such
applications. CAR aims to empower people by
involving them in the development process. Using
CAR, this project investigates how Voice over IP
(VoIP) may be applied in a productive way in an
underserviced community. VoIP is an ICT used for
sending voice over packet switched networks using
Internet Protocol. It can be used to integrate data
and voice to produce multimedia applications. In
South Africa (SA), VoIP may only be provided by
Telkom, the Second National Operator and the
Under-Serviced Area Licensees. Using CAR and VoIP,
an application is being developed to service a
specific need of a particular rural community. The
application will either provide a service to a small
rural business or aid the provision of healthcare in
rural areas. The project evaluates how well CAR
integrates with a normal Software Development
Lifecycle and makes policy recommendations for the
use of VoIP in rural SA.}
}
@inproceedings{2003-lewis,
mytype = {Other},
myurl = {2003-lewis.pdf},
author = {John A. Lewis and William D. Tucker and Edwin
H. Blake},
title = {{SoftBridge}: A Multimodal Instant Messaging
Bridging System},
booktitle = {Proceedings of South African Telecommunications and
Networking Application Conference (SATNAC 2003)},
year = {2003},
organization = {SATNAC, Telkom},
publisher = {CD ROM Publication,},
isbn = {0-620-30949-0},
documenturl = {http://pubs.cs.uct.ac.za/archive/00000052/},
annote = {Instant Messaging is traditionally a text only
affair. However, there are instances when it would
be useful to bridge to other types of media, like
speech. The SoftBridge is an application framework
that enables this kind of communications bridging
using instant messages. Its use of protocols like
the Jabber Instant Messaging Protocol and the Simple
Object Access Protocol makes it simple, open and
extensible. It also allows bridging to non IP
communications infrastructure, like the telephone
network. We describe the design and architecture of
the system, protocol and extensibility
mechanism. Finally we describe our experimental
methodology and discuss the results of our initial
experiments.}
}
@techreport{2003-lewis-b,
author = {John A. Lewis and William D. Tucker and Edwin
H. Blake},
title = {A Multimodal Instant Messaging System using
XML-Based Protocols},
institution = {Department of Computer Science, University of Cape
Town},
year = {2003},
mytype = {Other},
number = {CS03-08-00},
annote = {Instant Messaging is traditionally a text only
affair. However, there are instances when it would
be useful to bridge to other types of media, like
speech. The SoftBridge is an application framework
that enables this kind of communications bridging
using instant messages. Its use of protocols like
the Jabber Instant Messaging Protocol and the Simple
Object Access Protocol makes it simple, open and
extensible. It also allows bridging to non IP
communications infrastructure, like the telephone
network. We describe the design and architecture of
the system, protocol and extensibility
mechanism. Finally we describe our experimental
methodology and discuss the results of two sets of
experiments: those involving a {D}eaf User, and those
involving a set of Simulated Users.},
documenturl = {http://pubs.cs.uct.ac.za/archive/00000034/}
}
@techreport{2003-low-cost-vr,
author = {Edwin H. Blake and Kuo-Chen Fang and Fu-Yao Feng and
Ka Man Wai},
title = {Low-Cost Virtual Reality System - PC Driven System},
institution = {Department of Computer Science, University of Cape
Town},
year = {2003},
mytype = {Other},
number = {CS03-17-00},
documenturl = {http://pubs.cs.uct.ac.za/archive/00000071/},
annote = {The concept of Virtual Reality has been around since
early 1960s, but the availability and development of
Virtual Reality systems were largely limited due to
its nature of high cost and difficulty in
maintenance. Until recently, thanks to the fast
development of the modern technology, the idea of
building Virtual Reality system using
commodity-off-the-shelf hardware became feasible. By
using Personal Computers, we have in this project
developed a Low-Cost Distributed Virtual Reality
system that is much cheaper, easier to maintain and
mobile. In this project, the design of stereo
vision, corner projection and distributed
architecture had been discussed and applied in the
implementation of the Virtual Reality system. User
experiment had been conducted. The aim of the user
experiment is to test the system for presence level,
Slater, Usoh and Steed (SUS) questionnaire was used
as an indication to the level of
presence. Furthermore, network performance related
to scene complexities were also evaluated. From
these experiment, we have found that the Virtual
Reality system developed creates a good level of
presence to the participants and scene complexity
would influence the roundtrip time of the
network. Lastly, this paper concludes by discussing
why the Low-Cost Virtual Reality system developed to
be an effective Virtual Reality system.}
}
@techreport{2003-maclay,
author = {Maclay, David and Edwin Blake},
title = {The Use of Optic Flow in the Painterly Rendering of
Animated Models.},
institution = {Department of Computer Science, University of Cape
Town},
year = {2003},
mytype = {Other},
number = {CS03-07-00},
annote = {Image based painterly rendering has always had
difficulty enforcing frame-to-frame continuity in
animations. This paper lays out an approach that
uses a form of optic flow to ensure continuity in
the painterly rendering of 3D models characteristic
of virtual environments. The proposed technique will
be used to emulate the rock painting style of the
San people of southern Africa.},
documenturl = {http://pubs.cs.uct.ac.za/archive/00000037/}
}
@article{2003-tucker,
mytype = {Other},
myurl = {2003-tucker.pdf},
author = {William Tucker and Edwin Blake and Meryl Glaser},
title = {Building Bridges for {D}eaf Telephony in {S}outh
{A}frica: A community centred approach},
journal = {Information Technology in Developing Countries},
year = {2003},
volume = {13},
number = {2},
month = {November},
url = {http://iimahd.ernet.in/egov/ifip/nov2003/article1.htm}
}
@inproceedings{2004-chetty-a,
mytype = {Other},
myurl = {2004-chetty-a.pdf},
author = {Marshini Chetty and William D. Tucker and Edwin
H. Blake},
title = {Telemedicine in the {E}astern {C}ape using {VoIP}
combined with a Store and Forward Approach},
booktitle = {Proceedings of South African Telecommunications and
Networking Application Conference (SATNAC 2004)},
year = {2004},
organization = {SATNAC, Telkom},
publisher = {CD ROM Publication,},
isbn = {0-620-30949-0},
documenturl = {http://pubs.cs.uct.ac.za/archive/00000202/},
annote = {Rural areas in South Africa have unique conditions
such as remoteness and scarcity of reliable public
facilities. Information and Communication
Technologies (ICTs) introduced into these areas must
be suitable for these conditions. Using a
user-centred design approach based on Participatory
Design and Action Research, we have developed a
telemedicine application for a rural village in the
Eastern Cape. This paper describes how we determined
the requirements and design for the application and
why we chose Voice over Internet Protocol (VoIP)
combined with a store and forward approach to
achieve our telemedicine goals. We present an
overview of the methodology we are using, describe
the software application we have developed and
mention several challenges we have faced to
date. Finally we conclude that VoIP and store and
forward technologies are appropriate to the South
African rural situation.}
}
@inproceedings{2004-coetzee-a,
mytype = {Other},
author = {Mignon Coetzee and Sabeeha Hamza and Edwin Blake and
David Nunez},
title = {A Low Cost {VR} Group Support System for People
Living with {HIV}},
booktitle = {CyberTherapy 2004},
year = {2004},
month = {January 10-12},
address = {San Diego, California}
}
@article{2004-coetzee-b,
mytype = {Other},
myurl = {2004-coetzee-b.pdf},
author = {Mignon Coetzee and Sabeeha Hamza and Edwin Blake and
David Nunez},
title = {A Low Cost {VR} Group Support System for People
Living with {HIV}},
journal = {Cyberpsychology \& Behavior},
year = {2004},
volume = {7},
number = {3},
pages = {276-277},
doi = {http://dx.doi.org/10.1089/1094931041291330},
note = {Cybertherapy 2004 Abstracts}
}
@inproceedings{2004-tucker,
mytype = {Other},
myurl = {2004-tucker.pdf},
author = {William D. Tucker and Edwin H. Blake and Gary
Marsden},
title = {Open {U}ser {I}nterconnect and Quality of
Communication},
booktitle = {Proceedings of South African Telecommunications and
Networking Application Conference (SATNAC 2004)},
year = {2004},
organization = {SATNAC, Telkom},
publisher = {CD ROM Publication,},
isbn = {0-620-30949-0}
}
@inproceedings{2006-blake-c,
mytype = {Other},
myurl = {2006-blake-c.pdf},
author = {Edwin Blake},
title = {Software Engineering for Development. A Position
Statement},
booktitle = {SACLA 2006},
year = {2006},
note = {CD proceedings:},
isbn = {0-620-36151-4},
documenturl = {http://pubs.cs.uct.ac.za/archive/00000380/},
annote = {There is little work on targeted methodologies to
develop IT applications and content in a developing
world environment. This paper argues for a
methodology called Socially Aware Software
Engineering that we are busy formulating based on
firsthand experience building Information and
Communication Technology solutions. Our method is
based on a classical user-centred approach from
Human Computer Interaction combined with aspects of
Participatory Design and cyclical software
engineering practises. These approaches are wrapped
into an iterative Action Research paradigm in order
to directly include the community-based users of our
systems. I conclude with suggestions on changing the
nature of tertiary curricula in developing countries
in a way that integrates this socially aware
software engineering methodology.}
}
@techreport{2006-winterbottom-b,
author = {Cara Winterbottom and James Gain and Edwin Blake},
title = {Experiences in Designing a User-Oriented Tool for
Building and Understanding Interactions in Virtual
Environments},
institution = {Department of Computer Science, University of Cape
Town},
year = 2006,
mytype = {Other},
number = {CS06-03-00},
documenturl = {http://pubs.cs.uct.ac.za/archive/00000314/},
annote = {Designing a virtual environment and its interactions
is a difficult task because of the complexity of
specifying non-deterministic relationships between
multiple objects. We present a system to help novice
designers create interactions in a virtual
environment. Our system uses triggersets
(event-condition-action triads) for entering
interactions. It provides multiple visualizations of
the virtual environment and its interactions: a
sequence diagram for narrative sequencing, a
floorplan for spatial sequencing and a timeline for
time sequencing. We conducted an exploratory study
with 11 subjects, where some received visualizations
and triggersets of a VE and others only received the
triggersets. The study had two parts: to assess
whether subjects could sequence triggersets
accurately and to assess how they managed to debug
mistakes in a different set of triggersets. The
visualization group described 72.5\% of the sequence
correct on average, compared to 56.4\% by the
non-visualization group. For debugging, the
visualization group detected more than twice as many
errors as the non-visualization group.}
}
@inproceedings{2007-SATNAC,
mytype = {Other},
myurl = {2007-SATNAC.pdf},
author = {Tucker, W. D. and Blake, E. H. and Marsden, G. and
Pearson, M. and Westerveld, R.},
title = {Reflection on three years of rural wireless Internet
Protocol communication research and fieldwork},
booktitle = {Proceedings South African Telecommunication Networks
and Applications Conference {(SATNAC)}},
pages = {452-457},
year = 2007,
editor = {D. Browne},
address = {Mauritius},
url = {http://hdl.handle.net/10566/487}
}
@inproceedings{2008-gruijters,
mytype = {Other},
myurl = {2008-gruijters.pdf},
author = {Dominic Gruijters and Edwin H. Blake},
title = {Developing User Interfaces for Managing
Bio-diversity and Human Resource Data in Nature
Conservation},
booktitle = {Proceedings South African Telecommunication Networks
and Applications Conference {(SATNAC)}},
year = 2008,
month = {September 7-10},
isbn = {978-0-620-41697-9}
}
@inproceedings{2009-blake-sacla,
mytype = {Other},
myurl = {2009-blake-sacla.pdf},
author = {Edwin Blake},
title = {Design doctorate in computing: a defence of "doing
cool stuff"},
booktitle = {Proceedings of the 2009 Annual Conference of the
Southern African Computer Lecturers' Association
(SACLA 2009)},
pages = 110,
year = 2009,
organization = {Southern African Computer Lecturers' Association },
doi = {http://doi.acm.org/10.1145/1562741.1562756},
documenturl = {http://pubs.cs.uct.ac.za/archive/00000572/}
}
@inproceedings{2010-digital-voice,
mytype = {Other},
myurl = {2010-digital-voice.pdf},
documenturl = {http://pubs.cs.uct.ac.za/archive/00000626/},
author = {Gary Marsden and Ilda Ladeira and Thomas Reitmaier
and Nicola J. Bidwell and Edwin Blake},
title = {Providing a Digital Voice for Storytellers in
{A}frica},
booktitle = {Proceedings Computing and Culture},
pages = {101-131},
year = 2010,
address = {Berlin, Germany}
}
@inproceedings{2010-kapuire,
mytype = {Other},
myurl = {2010-kapuire.pdf},
documenturl = {http://pubs.cs.uct.ac.za/archive/00000640/},
author = {Gereon Koch Kapuire and Heike Winschiers-Theophilus
and Shilumbe Chivuno-Kuria and Nicola J Bidwell and
Edwin Blake},
title = {A revolution in {ICT}, the last hope for {African}
Rural Communities' technology appropriation},
booktitle = {IDIA2010: Proceedings of the 4th International IDIA
Development Informatics Conference},
year = 2010,
numpages = 8,
publisher = {IDIA, Monash University },
month = {3-5 November},
location = {Cape Town, South Africa},
isbn = {978-0-620-47590-7}
}
@inproceedings{2011-batman-compare,
mytype = {Other},
myurl = {2011-batman-compare.pdf},
documenturl = {http://pubs.cs.uct.ac.za/archive/00000761/},
author = {Edmundo Chissungo and Edwin Blake and Hanh Le},
title = {Performance Comparison of BATMANd and BATMAN-adv},
booktitle = {SATNAC 2011: Southern African Telecommunication
Network and Applications Conference},
pages = {250-251},
year = 2011,
editor = {Dr Stefan Scriba},
address = {East London},
organization = {Telkom},
isbn = {9780620508933}
}
@article{2014-interactions,
mytype = {Other},
myurl = {2014-interactions.pdf},
author = {Blake, Edwin and Glaser, Meryl and Freudenthal,
Adinda},
title = {Teaching Design for Development in Computer Science},
journal = {interactions},
issue_date = {March + April 2014},
volume = 21,
number = 2,
month = mar,
year = 2014,
issn = {1072-5520},
pages = {54--59},
numpages = 6,
url = {http://doi.acm.org/10.1145/2576068},
doi = {10.1145/2576068},
acmid = 2576068,
publisher = {ACM},
address = {New York, NY, USA}
}
@article{2015-aarhus,
mytype = {Other},
myurl = {2015-aarhus.pdf},
author = {Edwin Blake and Ineke B\"{u}skens and Andy Dearden},
title = {Researching for Change in a Globalising Asymmetric World},
journal = {Aarhus Series on Human Centered Computing},
year = 2015,
volume = 1,
number = 1,
pages = {II:23-25},
note = {Critical Alternatives 2015: 5th Decennial Aarhus Conference},
doi = {10.7146/aahcc.v1i1.21392},
url = {http://ojs.statsbiblioteket.dk/index.php/ashcc/article/view/21392}
}
@article{2015-gaz,
mytype = {Other},
myurl = {2015-gaz.pdf},
documenturl = {http://pubs.cs.uct.ac.za/archive/00001056/},
author = {Edwin Blake and Melissa Densmore and Marion Walton},
title = {Gary {M}arsden's Legacy at the {University} of
{Cape} {Town}},
journal = {Information Technologies \& International Development},
year = 2015,
volume = 11,
number = 4,
pages = 43,
url = {http://itidjournal.org/index.php/itid/article/view/1445/534}
}
@inproceedings{2016-stanley-pdc,
mytype = {Other},
myurl = {2016-stanley-pdc.pdf},
author = {Colin Stanley and Heike Winschiers-Theophilus and
Edwin Blake and Kasper Rodil and Gereon Koch Kapuire
and Donovan Maasz and Michael Chamunorwa},
title = {Formulating the obvious as a task request to the
crowd: an interactive design experience across
cultural and geographical boundaries},
booktitle = {Proceedings of the 14th Participatory Design
Conference: Short Papers, Interactive Exhibitions,
Workshops},
year = 2016,
volume = 2,
pages = {86-87},
address = {Aarhus, Denmark},
isbn = {978-1-4503-4136-3},
doi = {10.1145/2948076.2948122},
url = {https://doi.org/10.1145/2948076.2948122}
}
@inproceedings{2017-chisig,
mytype = {Other},
myurl = {2017-chisig.pdf},
author = {Isaac Holeman and Edwin Blake and Melissa Densmore
and Fiona Ssozi and Elizabeth Goodman and Indrani
Medhi Thies and Susan Wyche},
title = {Co-Design Across Borders Special Interest Group},
booktitle = {Proceedings of the 2017 {CHI} Conference Extended
Abstracts on Human Factors in Computing Systems ({CHI}
{EA} '17)},
year = 2017,
month = {May 06 - 11},
address = {Denver, Colorado, USA},
publisher = {ACM},
url = {https://doi.org/10.1145/3027063.3049288},
doi = {10.1145/3027063.3049288},
annote = {In recent years the evolving practice of co-design
has continued to shift the roles of designers,
researchers and the collection of partners formerly
known as users. A growing community of researchers
is pursuing this work "across borders." The greatly
varied contexts of such work present distinctive
challenges related to culture, power, language,
etc. This SIG will convene co-design practitioners
and researchers to discuss these challenges. Through
attention to methods, tools and values in co-design,
we will consider how co-design is traveling to new
scenes around the world. We aim to form new
relationships, develop themes of common interest,
foster collaborations and build research
infrastructure for this rapidly growing community.}
}
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