CS4000 Related
Lectures Around Tech & Web Sites

Privacy involves linking information to the identity of the subject, not the content of the information itself, and so it is closely related to the topic of anonymity. The problem with anonymity in online communities is that it not only protects personal information, it also lets the anonymous person make comments without having to stand behind them. Prof. Amy Bruckman has studied this phenomenon in MUDs and MOOs, and has argued that being anonymous in some online communities makes no more sense than attending a professional conference and refusing to wear a name tag and putting a paper bag over your head. At a recent conference where she gave a talk, she took these pictures of  her audience...

http://www.cc.gatech.edu/~asb/photos/hcic03_paperbags_small_left.jpg
http://www.cc.gatech.edu/~asb/photos/hcic03_paperbags_small_right.jpg

Two talks of interest to 4000 students:


****************************************************************
Tuesday, March 11, 2003
MIRC 102
3:00pm -  4:00pm
 
Refreshment served at 2:30pm
Featuring: John C. Knight
****************************************************************
 
 Safety-Critical Systems, Natural Language, and Requirements
     In  systems  requiring  ultra-high dependability, the majority of software defects that are found during testing or after deployment are the  result  of  requirements errors.  Of those requirements errors, a significant number occur because of misunderstandings about the system context.   Essential  details  of  the  application  domain are either unknown or misunderstood by developers because of  poor  communication of  domain  knowledge.   The  pervasive medium for this communication, natural language, is understood to be problematic  for  high-precision
communication because of its characteristic ambiguity and informality. However, natural language possesses its own body of  research  results and  is  amenable to rigorous inspection.  We have analyzed the domain knowledge communication problem as it arises in  software  engineering
from  the perspective of current cognitive linguistic theory, and this analysis has  yielded  a  model  that  helps  to  explain  sources  of ambiguity and other problems with the use of natural language.    In  this  presentation,  I  describe  the  linguistic  model  and insights derived from it, e.g., that the  considered  use  of  natural language  performs  a  function  unachievable  by formal means.  These insights are exploited to motivate the definition of structures  that, by  design,  haveproperties indicated by the analysis to improve the potential for accurate and effective domain  knowledge  communication. Preliminary   results   indicate   that   improved   domain  knowledgecommunication has the potential for reducing serious software  defects significantly

Bio    John C. Knight  is  a professor of computer science at the University of Virginia.  He holds a B.Sc. (Hons) in Mathematics  from  the  Imperial College  of  Science  and Technology (London) and a Ph.D.  in Computer Science from the University of Newcastle upon Tyne.  Prior to  joining the  University  of  Virginia  in  1981,  he  was  with NASA's Langley Research Center.    Dr. Knight's research interests are in software dependability.  He  is currently  working  on projects in requirements and specification, and the survivability of critical networked  infrastructure  applications. Specific  research  topics  include  the  use  of  natural language in
specification,   tool   support   for   comprehensive    specification development   and  analysis,  network  architectures  that  facilitate survivability, the security of those architectures, and  the  modeling of very large networks.

--
Who: John Tang http://research.sun.com/people/tang/
When: 2p this Wed (March 12)
Where: CRB 303
Abstract:
 
Finding the right time to make contact with people who are remote from
you is a lot harder than doing so face-to-face.  I will present some
research on rhythm awareness that goes beyond real-time awareness to help
identify likely times to interact with others based on typical rhythmic
patterns that people exhibit in their computer activity.  Rhythmic
awareness has helped our team (split between East and West Coast sites)
coordinate our work.  Similarly, once you find a time to interact,
gracefully starting and ending communication is harder to do with remote
collaborators.  An understanding from conversation analysis of what
resources and cues people use to negotiate making contact identifies ways
to design support for contact negotiation. I will use this perspective to
review the design and use experiences of the Montage and Awarenex
prototypes, which use video, text, and graphic indicators to share
awareness. This review identifies directions for future research in
supporting contact negotiation in computer-mediated communication.
--
 





Here is an announcement for an exhibition of manipulated photography in Atlanta. I know Ted Maloof's work well. In addition to being excellent artistically, it demonstrates the craft skills that I discussed in the class session on image manipulation. (And check out the exhibit title and the quote from Picasso....)    -- Colin Potts

 
TRUE LIES
"ART IS A LIE THAT TELLS THE TRUTH"  Picasso
 
Images by Ted Maloof
 
Exhibit runs March 3 - April 10
with an opening reception:
Friday, March 7 - 6:30-8:30pm
 
at
THE SHOWCASE SCHOOL
Lower Level Gallery
1135 Sheridan Road
Atlanta, GA  30324
404.965.2205
 
Gallery Hours:
Monday-Thursday 9:30am-1:30pm
Monday-Thursday 6-9pm

BUSH'S FINAL CYBERSECURITY PLAN UNVEILED
The Bush administration has unveiled the final version of
the National Strategy to Secure Cyberspace - a strategy for
protecting the Internet and securing information systems.
The plan calls for the government to work with private
industry to create an emergency response system to
cyberattacks and to reduce the nation's vulnerability to
such threats. Plan at
http://www.whitehouse.gov/pcipb/cyberspace_strategy.pdf
Coverage at
http://news.com.com/2100-1001-984697.html
http://online.wsj.com/article/0,,SB1045260853877188063,00.html
http://www.washingtonpost.com/wp-dyn/articles/A10274-2003Feb14.html


The following are from the ACM TechNews Early Alert Service, Feb 19, 2002. We won't post this generally, but it gives you an idea of the news stories that are covered and that are relevant to CS4000. To stay current, go to the TechNews home page, http://www.acm.org/technews/ , or sign up for the mailing.

"Bill Would Ban Spam E-Mail in California"
California Sen. Debra Bowen (D-Marina del Ray) has authored a
bill that would make it illegal to send spam email from
California or to a California-based email address, a crime
punishable by a maximum fine of $500.  However, experts such as ...
http://www.acm.org/technews/articles/2003-5/0219w.html#item1

"Diversity in the High-Tech Workplace"
The workforces of the 10 highest-grossing high-tech companies in
Silicon Valley have grown in diversity, but the emphasis is on
Asians rather than other minorities, while executive levels
remain predominantly white.  About one in three jobs created ...
http://www.acm.org/technews/articles/2003-5/0219w.html#item2

"Drive Resumes for Standard Software License"
The National Conference of Commissioners on Uniform State Laws
(NCCUSL) is set to renew its drive to get standard software
licenses established in all states.  The group of lawyers,
professors, and judges, backed by the software industry, has ...
http://www.acm.org/technews/articles/2003-5/0219w.html#item3

"Cyber-Security Strategy Depends on Power of Suggestion"
The Department of Homeland Security's national cybersecurity
plan, released on Friday, lacks substantive action on the part of
the federal government, according to many experts.  Many
technology firms opposed active interference from the government, ...
http://www.acm.org/technews/articles/2003-5/0219w.html#item4

"Digital Vaccine May Make Computer Networks Tolerant to a Fault"
Computer science graduate students at the University of
California at Irvine have developed techniques that allow
software engineers to inoculate computer systems against faulty
data.  Systems such as those used in international intelligence, ...
http://www.acm.org/technews/articles/2003-5/0219w.html#item5

"Commerce Proposes IT Policy Restructuring"
The U.S. Commerce Department is proposing merging various
agencies that oversee information technology and
telecommunications policy into one agency in order to streamline
policy management.  Secretary of Commerce Don Evans wants to ...
http://www.acm.org/technews/articles/2003-5/0219w.html#item8

"Tracking the Killer Worm"
The recent outbreak of the SQL Slammer worm could have been far
more damaging than it was, according to Giga Information Group
security analyst Michael Rasmussen, who believes the attack was
launched to demonstrate proof of concept.  Slammer could be a ...
http://www.acm.org/technews/articles/2003-5/0219w.html#item10

"Robots Are Getting More Sociable"
Scientists are trying to build sociable robots that could be used
not only to better understand human social interaction, but to
assist people both physically and psychologically.  "Robots have
always been an intriguing mirror to our own conception of what it ...
http://www.acm.org/technews/articles/2003-5/0219w.html#item12

"Conversation With Marc Andreessen"
Netscape co-founder Marc Andreessen, who helped create the
groundbreaking Mosaic Web browser 10 years ago, says that
Internet navigation has not radically increased in sophistication
since then, despite his and others' assumptions that it would ...
http://www.acm.org/technews/articles/2003-5/0219w.html#item13

"U.S. Backs Merging Net, Phone Numbers"
The Commerce Department has recommended that the United States
join a new electronic numbering system that will let people use
one identifier for various purposes, such as faxes, mobile
phones, instant messaging, and email.  The ENUM system is ...
http://www.acm.org/technews/articles/2003-5/0219w.html#item14

"High Impact"
The question as to whether IT is making a fundamental difference
to society at large is a matter of debate, but there are
individuals striving to put their technology skills, expertise,
and corporate contacts to altruistic use.  Stanford University ...
http://www.acm.org/technews/articles/2003-5/0219w.html#item15

"Survival Guide: Perspectives From the Field"
James Lewis of the Center for Strategic and International Studies
argues that doomsday scenarios of cyberattacks on America's
critical infrastructure are overblown.  He points out that most
cyberattacks are one-time assaults that result in minimal damage ...
http://www.acm.org/technews/articles/2003-5/0219w.html#item16

"Futurists"
The coming wave of technological development will present great
opportunities for minorities and the underprivileged, while at
the same time threaten to widen the "digital divide" between the
technological haves and the have-nots.  Wake Forest University's ...
http://www.acm.org/technews/articles/2003-5/0219w.html#item17

-- To visit the TechNews home page, point your browser to:
http://www.acm.org/technews/


News story on the disclosure of credit card numbers

(Note that CoC's Prof. Lee is quoted...)

New York, Feb. 18 (Bloomberg) -- Visa USA Inc., MasterCard
International Inc., American Express Co. and Morgan Stanley's
Discover unit said an intruder accessed more than 5.4 million
credit card account numbers earlier this month by hacking into the
computer network of an outside payment processor.
     Purchase, New York-based MasterCard said about 2.2 million of
the cards carried its name and Visa said 3.2 million of its card
accounts were affected. An unspecified number of American Express
and Discover account numbers were involved, spokeswomen for the
two companies said. Visa and MasterCard did not identify the firm
where the security breach occurred.
     All told, MasterCard said 8 million account numbers were
accessed, without naming other card companies involved. MasterCard
said investigations were under way. There were no signs of fraud
among the ``small percentage'' of Discover's 50 million credit
card customer accounts that were affected, said spokeswoman Beth
Metzler.
     ``I don't recall such a large number'' of credit card numbers
being accessed, said Dr. Wenke Lee, an assistant professor at the
Georgia Institute of Technology, who specializes in computer
security. ``I have not seen many cases where the intruder has
gotten caught.''
     Officials at the Federal Bureau of Investigation could not be
reached for comment.

                      Cardholders Not Liable

     MasterCard spokeswoman Christina Costa said banks that issued
the affected cards were notified so they can monitor the accounts
for possible fraud or issue new cards to customers.
     ``Visa's fraud team immediately notified all affected card-
issuing financial institutions and is working with the third-party
payment card processor to protect against the threat of a future
intrusion,'' Rosetta Jones, a Visa USA director, said in a
statement. Visa cardholders aren't liable for unauthorized
purchases on their accounts, Jones said.
     Spokespersons at several firms that process credit card
transactions said their companies were not involved. They include
Fifth Third Bancorp's Midwest Payment Systems, National Processing
Inc., First Data Corp., Concord EFS, Certegy Inc., Total System
Services Inc. and Nova Corp., a unit of U.S. Bancorp.
     Diane Terry, director of TransUnion LLC's Fraud Victim
Assistance Department, said the company hasn't received any
complaints about the hacking from customers. She said that's good
news.
     ``Usually, if they are going to use those numbers, they act
very quickly,'' Terry said.
     Reuters reported the incident earlier.


From Jeff Stewart, an article on Turbo Tax's Digital Rights Management system and its potential flaws:

http://www.extremetech.com/article2/0,3973,815697,00.asp



This is a good resource for healthcare organizations that are worried about their  record keeping about personal health information being HIPAA-compliant:

http://www.npowerny.org/hipaabasics.htm



Two interesting links from Brian Gelb (thanks Brian!)...  

 This doesn't relate to my paper topic, but I found it very interesting since it relates to what we're discussing in class. I'm also assuming that some people in the class may be writing about this for their paper and may find some useful information here:
 
On censorware.net, there is a article (http://censorware.net/article.pl?sid=03/02/11/2043211&tid=1) where the ACLU filed briefs supporting the injuction of the Children's Internet Protection Act. I believe this will come up before the Supreme Court in early March.
 
I just keep stumbling across interesting articles that pertain to your class:
 
http://msn.com.com/2100-1105-984248.html
 
This article is about the German government blocking access to a website, which they determined was "too gruesome."


"Highly Interactive Webcasting with Structured Archives for Transmitting and Building Knowledge"
Ron Baecker Bell University Laboratories Chair in Human-Computer Interaction Knowledge Media Design Institute (KMDI) and Dept. of Computer Science
University of Toronto

12:00 Noon on Thursday, February 20, 2003
Room 102, MiRC


Abstract:

Media spaces are environments that incorporate computer and communication technologies, typically including the Internet, to allow distributed groups of individuals to interact in real-time. Media spaces often incorporate webconferencing, audioconferencing, and/or videoconferencing.

The talk begins by reviewing past media space work including projects at Xerox, Toronto, Sun, Berkeley, and Microsoft, and relevant work on electronic classrooms such as Georgia Tech1s eClass. We focus particularly on webcasting as an interesting media space that has excellent potential for scalability across a large number of sites. The downside is that webcasting is typically a one-way broadcast from a transmitter to a multitude of receivers, and an ephemeral event that exists only during the live broadcast.

Our goal in the Toronto ePresence project is to create a media space that allows distributed groups of individuals to participate and interact in webcast events such as lectures, and to do so before, during, and after the event. The system currently supports video, audio, slide, and screen broadcasting; concurrent slide review; integrated moderated chat; question submission; the automated creation of structured, navigable, searchable event archives, and automated data collection for evaluation.

ePresence may be distinguished relative to other webcasting approaches in that:

Speakers are not forced to use Powerpoint; ePresence transmits several rich media presentation formats

Dialogue among remote viewers and questions to the speaker happen with an integrated chat
facility that (currently) uses a moderator as an intermediary

The system produces automatically structured, navigable, searchable video archives

The technology evolves through an iterative design process, with new system prototypes
introduced frequently and evaluated in real use.


Perhaps the most important achievement is the creation of a flexible, modular, extensible infrastructure for exploring frontiers of collaboration technologies. These include issues of scalability, interactivity and media richness, physical access, content management and access, and knowledge building. The talk will conclude with a brief description of open research problems related to these issues.


Tuesday February 18, 11:00-12:30, DM Smith room 303  (presentation
11:00 to 11:45am)

Dr. Elke Weber, Columbia University
Affect, Roles, and Analysis: Decision Modes and Public Policy

Abstract:
I will review recent evidence by myself and others that people make
decisions in qualitatively different ways, and that the mode by which a
decision gets made often determines  which action or option is
chosen.  Decision goals, decision content, the way in which  relevant
information is presented and acquired, and cultural norms all determine
the
implicit selection of decision mode(s).  Implications of these results
for
public policy will be discussed.

About the speaker:
Dr. Elke U. Weber is Professor of Psychology and Management and
co-director
of the Center for Decision Sciences at Columbia University.  Dr. Weber
studies judgment and decision making under risk and uncertainty.  Funded
by

the National Science Foundation, she has explored psychologically
appropriate ways to measure and model individual and cultural
differences
in risk taking, specifically in risky financial situations and
environmental decision making and policy.  Recent interests include the
role of affect, experience and memory in decision making and decision
mode
selection. She has been a Fellow at the Wissenschaftskolleg (Institute
for
Advanced Study) in Berlin, Germany and at the Center for Advanced
Studies
in the Behavioral Sciences at Stanford.  Dr. Weber is past president of
the
Society for Judgment and Decision Making, and past president of the
Society
for Mathematical Psychology, and a former member of the executive
council
of INFORMS' Decision Analysis Society. She was also a member of a
National
Academy of Sciences Committee on Human Dimensions in Global Change, in
which capacity she co-edited The Drama of the Commons (National Academy
Press, 2002).  Dr. Weber received her MA and PhD (1984) from Harvard
University in Behavior and Decision Analysis, and her BA from York
University, Psychology, Summa Cum Laude.


Papers are available in the School of Public Policy main office.


Prof. Potts,
     This doesn't relate to my paper topic, but I found it very interesting since it relates to what we're discussing in class. I'm also assuming that some people in the class may be writing about this for their paper and may find some useful information here:
 
On censorware.net, there is a article (http://censorware.net/article.pl?sid=03/02/11/2043211&tid=1) where the ACLU filed briefs supporting the injuction of the Children's Internet Protection Act. I believe this will come up before the Supreme Court in early March.
 
Brian Gelb
CS4000 - B

Georgia Tech's School of Literature Communication and Culture and the Wesley New Media Center present a talk by Scott McCloud.

"Digital Comics -- A Fast-Changing Landscape"

Cartoonist Scott McCloud discusses recent developments in the art and business
of comics on the Web.

McCloud is widely recognized for "Understanding Comics," a 215-page comic book
about comics that explains the inner workings of the medium and examines many
aspects of visual communication along the way.  His follow up book “Reinventing
Comics” advocates revolutions in the way comics are created, distributed and
perceived with special emphasis on the potential of Online Comics.

The event will take place February 11, 2003 at 4 pm in the DM Smith Building
room 105 on the Georgia Tech campus (corner of Cherry Street and Bobby Dodd Way
across from GT Library)

For further information visit:  http://www.newmedia.gatech.edu/mccloud


Tues, 11th, MaRC Auditorium, 3:15pm
--------------------------------------------------------------
Title: Swarm Intelligence

The computer age's centralized mindset has successfully produced machines
that have changed our lives. A central unit processes and dispatches
information, while a memory stores it. Simple and powerful. But today's
computer isn't the only possible tool for computing. Machines can process
information in other ways. One way is "swarm intelligence." Forget
centralization and control. Forget programming. Forget the concept of a
big, omniscient computer. Think of a hive, or an anthill. Social insect
colonies aren't centrally controlled; they're composed of thousands or
even millions of insects with limited cognitive repertoires. Individually,
one insect can't do much, but collectively, social insects can achieve
great things-build a nest, forage for food, take care of the brood,
allocate labor, and so on. The collective intelligence of social insects,
swarm intelligence, offers a powerful new model for computing. At a time
when the world grows so complex that no single human being can understand
it, when information, and not the lack of it, threatens our lives, when
users can no longer master bloated software, swarm intelligence offers an
alternative way of designing computing systems. In swarms, autonomy,
emergence, and distributed functioning replace control, preprogramming,
and centralization. Applications to manufacturing scheduling, supply chain
optimization, routing and others will be presented.

Eric Bonabeau
Eric Bonabeau is the chief scientist at Icosystem Corporation, a
Cambridge, MA-based "idea incubator" that uses complexity science to
invent new technologies. Prior to his current position, Dr. Bonabeau was
the CEO of Eurobios, a joint venture with Cap Gemini Ernst & Young
applying the science of complex adaptive systems to business issues. He
has been a research engineer with France Telecom R&D, an R&D engineer with
Cadence Design Systems, and the Interval Research Fellow at the Santa Fe
Institute. He is the author of more than one hundred science articles and
three books (Intelligence Collective, Hermhs, 1994; Swarm Intelligence in
Natural and Artificial Systems, Oxford University Press, 1999; and
Self-Organization in Biological Systems, Princeton University Press,
2001). Dr. Bonabeau is also co-editor-in-chief of Advances in Complex
Systems and a member of the editorial and scientific committees of more
than twenty-five international journals and conferences. He graduated from
Ecole Polytechnique, France, holds a telecommunications engineering degree
from Telecom Paris, a post-graduate degree in applied mathematics and a
PhD in theoretical physics both from Paris X University.



Kenneth D. Forbus
Qualitative Reasoning Group
Northwestern University

"Building Computers with Common Sense"

January 30, 2003
MaRC Auditorium
11:00 a.m.
 
Abstract:
Creating computers with common sense is one of the central scientific and technological goals of Artificial Intelligence.  This talk will describe two lines of research that are working towards this goal.  I will describe our work on analogical processing, including techniques for integrating first-principles and analogical reasoning, and a model of progressive alignment that models human-like learning processes.  I will also describe our work on sketching.  This will include the principles of our nuSketch approach, which focuses on visual and conceptual understanding rather than recognition, and our experiences in building two sketching systems, one of which has already been used in successful experiments with military personnel.
Bio Sketch:
Kenneth D. Forbus is a Professor of Computer Science and Education at Northwestern University.  His research interests include qualitatitve reasoning, analogy and similarity, sketching and spatial reasoning, cognitive simulation, reasoning system design, articulate educational software, and the use of AI in computer gaming.  He received his degrees from MIT (Ph.D. in 1984).  He is a Fellow of the American Association for Artificial Intelligence, an Associate Editor of Cognitive Science, and serves on the Governing Board of the Cognitive Science Society and the editorial boards of Artificial Intelligence and the AAAI Press.

"Wearable Instruments/Wearable Sounds"
Sha Xinwei, (School of Literature, Communication & Culture)

12:00 Noon on Thursday, January 30, 2003
Room 102, MiRC

Abstract:
The TGarden project was motivated in part as a study of how people can improvise continuous gestures meaningfully to shape dynamically and autonomously generated media for playful purposes. In 2001-2002, the Topological Media Lab (TML) in the GVU helped build a second generation responsive media space that mapped gestures and movement of up to 5 people in a space to sound and visual imagery synthesized in realtime. I'll report on the progress with the dynamical system-based media choreography engine, work in collaboration with Yon Visell and Blair MacIntyre.

Additionally, I'll lay out the research context around the responsive media space project related to gesture-tracking and body-based and fabric-based expressive technologies. This leverages the responsive media space as a laboratory testbed and presents opportunities for a more astute statistical analysis of time series data from aggregrated as well as individual gesture.

Last April members of the TML obtained a couple of results in addition to the second generation media choreography system itself. (1) We composed realtime transformations on video using masks dynamically generated by a physical model, (2) we collaborated with Prof. S. Jayaraman and S. Park of the School of Textile Engineering in prototyping a new garment, custom built with signal-conducting fiber ("sensate liner"). This garment represented the first of several experiments in a new research project on wearable instruments / wearable sound using active fabrics.

Benefits include a refined understanding of the kinds of gesture-tracking most useful to support wireless sensing and augmented clothing that can be used in playful or everyday a-linguistic activity. The wearable instruments / wearable sound research is part of the study of gesture and tangibility from computational as well as phenomenological perspectives.

Light refreshments will be served.



Today's Atlanta Journal-Constitution carries a story about the
meditation chamber project that involves Diane Gromala, Chris Shaw and
Larry Hodges.  The article is accessible online at:

http://www.accessatlanta.com/ajc/living/health/0103/22meditate.html



http://www.wired.com/news/digiwood/0,1412,57330,00.html

ISPs Must Forfeit Download Data

Internet providers must agree to requests by the music industry to track down
    computer users who illegally download music, a federal judge ruled Tuesday
    in a case that could dramatically increase online pirates' risk of being
    caught.
The decision by U.S. District Judge John D. Bates upheld the recording
    industry's power under a 1998 law to compel Net providers to identify
    customers that illegally trade music or movies online.


http://www.epic.org/privacy/carnivore/5_02_release.html

A memo released a few months ago about how carnivore failed and somehow this
prevented them from getting Osama Bin Laden or something.


http://www.businessweek.com/technology/cnet/stories/980889.htm

 Thursday, January 16, 2003

     FROM CNET NEWS.COM
 Pentagon database plan hits snag on Hill

 A plan to link databases of credit card companies, health insurers and
 others--creating what critics call a "domestic surveillance
 apparatus"--raises concern on Capitol Hill.

and

http://www.siliconvalley.com/mld/siliconvalley/4969039.htm

Senators vow to halt `data mining' project
By Jim Puzzanghera
Mercury News Washington Bureau

WASHINGTON - Reflecting increased alarm about a Pentagon plan to
find terrorists by trolling the electronic records of all Americans,
several senators took steps Thursday to rein in the project and halt other
``data mining'' efforts until Congress can review the implications on civil
liberties


Here are some links which are relevant to the issues we discuss in class:


                     "Do we have a quorum?"
                         Lorenzo Alvisi
                       Associate Professor
                  University of Texas at Austin

                  Wednesday, January 15th, 2003
                            MiRC 102A
                           12:00-1:00


Quorum systems are a popular mechanism for building highly available
data repositories. Byzantine Quorum Systems (BQSs) are quorum systems
that  guarantee the consistency of the replicated data that is trusted
to them even if a subset of the replicas, up to a given threshold, is
arbitrarily compromised.

BQSs exemplify an attractively simple approach to integrating
fault-tolerance and security in distributed systems, i.e.  to harden
the mechanisms we use to build highly available services so they
operate correctly even when faulty components behave in malicious ways.

Unfortunately, this approach does not quite work out of the box. This
talk addresses  some of the theoretical and practical questions that
come with "some assembly required": Can we change dynamically the
structure of a BQS to respond to an attack? What is the minimum number
of replicas necessary to implement a BQS for a given threshold of
faulty replicas? What consistency guarantees can a BQS provide? Do
these guarantees depend on the cryptographic attributes of the data
being stored?

-----
Lorenzo Alvisi is an Associate Professor in the Department of
Computer Sciences at the University of Texas at Austin. He is an
Alfred P.  Sloan Research Fellow and an IBM Center for Advanced
Studies Fellow. During the 2002-2003 academic year, he is on
sabbatical at Cornell.


The College of Computing and
The Center for the Study of Women, Science, & Technology (WST)
invite you to attend a lecture in the 2002/03 College of Computing Distinguished Lecture Series
ALLAN FISHER
Chairman & CEO, Carnegie, Inc.
Thursday, January 16, 2003
3:00 p.m.
117 Student Services Building

Starting in 1995, Allan Fisher and Jane Margolis engaged in an interdisciplinary program of research and action to increase the numbers and proportions of undergraduate women in computer science.  As a part of those efforts, the entering enrollment of women in computing in the undergraduate Computer Science program at Carnegie Mellon rose from 7% in 1995 to 42% in 2000.  Fisher and Margolis report on their experience in Unlocking the Clubhouse:  Women in Computing (MIT Press, 2000).