cas : professors CAS Professors are permanent members of the Center, selected from the faculty on the basis of their outstanding scholarship. These appointments are among the highest forms of campus recognition. With the Associates and Fellows, they form the core of the Center for Advanced Study Community, meeting regularly for informal lunches and scholarly presentations. Professors also participate in a yearly roundtable discussion of research interests. CAS Professors serve on the Release-Time Appointments Committee, charged with selecting the annual CAS Associates and Fellows. Tamer Başar CAS Professor of Electrical and Computer Engineering Additional Information Professor Başar is internationally renowned for his scholarly contributions to the fields of systems, control, and game theory. He has pioneered the game-theoretic approach to robust estimation, identification, and control, which has also had significant impact in other fields, such as economics. He has made fundamental contributions to the theory of noncooperative dynamic games, particularly with regard to the interplay between information acquisition and processing, and dynamic Nash equilibria. Among his current research interests are modeling and control of communication networks, control over heterogeneous networks, resource management and pricing in networks, and robust distributed decisionmaking under uncertainty. He is a member of the National Academy of Engineering and the European Academy of Sciences; fellow, Institute of Electrical and Electronics Engineers (IEEE) and International Federation of Automatic Control (IFAC). He is a past president of the IEEE Control Systems Society (CSS) and founding president of the International Society of Dynamic Games. Currently he is editor-in-chief of Automatica, series editor of "Systems & Control: Foundations and Applications," and managing editor of Annals of ISDG. For his contributions Professor Başar has received the triennial Giorgio Quazza Medal of IFAC, the Richard E. Bellman Control Heritage Award of the American Automatic Control Council, Hendrick W. Bode Lecture Prize of IEEE CSS, triennial Outstanding Service Award of IFAC, and the Medal of Science of Turkey. At Illinois he has received the Tau Beta Pi Daniel C. Drucker Eminent Faculty Award from the College of Engineering and holds a Swanlund Endowed Chair. tbasar@control.csl.uiuc.edu Gordon Baym CAS Professor of Physics Additional Information Professor Baym is a theoretical physicist with unusually wide interests. His research activities span solid-state physics, statistical physics, low-temperature physics, astrophysics, nuclear physics, and the history of physics. A pioneer in the study of pulsars and neutron stars, and more generally the nature of the matter under extreme conditions of density and pressure, he is currently involved in studies of high-density matter in the laboratory using high-energy particle accelerators to recreate on earth, albeit briefly, the conditions in neutron stars and the early universe. His present research also aims at understanding the properties of Bose-Einstein condensed atomic gases, the coldest systems in the universe. In earlier work he made important advances in the methods of quantum statistical mechanics. He continues to serve on various national physics advisory committees. He was elected to the American Academy of Arts and Sciences (1981); the National Academy of Sciences (1982), where he chaired the Physics Section from 1995 to 1998; and the American Philosophical Society (2000). He is the recipient of the 2002 Hans Bethe Prize of the American Physical Society. gbaym@uiuc.edu Peter Beak CAS Professor of Chemistry Additional Information Professor Beak has made fundamental contributions to organic chemistry that have provided unifying concepts and opened new areas of investigation. His work has clarified the effect of molecular environment on structure-stability relationships, provided new reactions that are widely used for chemical synthesis, and identified novel reactive intermediates. His current research involves the determination of reaction trajectories in atom-transfer reactions and asymmetric synthesis. He has held editorships, lectureships, and leadership positions in professional organizations. He has received a number of awards, lectured around the world, and served as research advisor for more than 100 graduate and postdoctoral students who are making significant independent contributions to their fields. Professor Beak is a member of the National Academy of Sciences and the American Academy of Arts and Sciences and holds the James R. Eiszner Distinguished Chair in Chemistry. beak@uiuc.edu May R. Berenbaum CAS Professor of Entomology Additional Information In her research, Professor Berenbaum explores the chemical interactions between phytophagous insects and their host plants and the function of these interactions in the organization and structure of natural communities. Her work is distinctive in that it addresses insect/plant coevolution at multiple hierarchical levels. On the physiological level, she investigates mechanisms of toxicity of plant chemicals as well as molecular and biochemical adaptations of insects to these toxins; on the ecological level, she examines patterns of insect hostplant use as a function of the distribution and interaction of plant chemicals. Professor Berenbaum is interested in the practical as well as basic aspects of research and has actively promoted the application of ecological principles to pest management and agriculture. Moreover, she has a passion for fostering scientific literacy and has written four books and many magazine articles for the general public. In recognition of her work she has received a Presidential Young Investigator's Award from the National Science Foundation, a Guggenheim Fellowship, the George Mercer Award from the Ecological Society of America, and the Founder's Memorial Award from the Entomological Society of America. She is a member of the National Academy of Sciences and American Philosophical Society; fellow, American Association for the Advancement of Science and American Academy of Arts and Sciences. She received the 1996 Entomological Society of America North Central Branch Distinguished Teaching Award and the 1999 Edward O. Wilson Award for Science Writing from the American Society of Naturalists. In 2000 she received the Silverstein-Simeone Award, International Society of Chemical Ecology; and UIUC Chancellor's Award for Distinguished Public Service. In 2002 she was elected a fellow of the Entomological Society of America. In 2004 she received the Robert MacArthur Award, Ecological Society of America. maybe@life.uiuc.edu Leon Dash CAS Professor of Journalism; Interim Director Additional Information Swanlund Professor Leon Dash is a Pulitzer-prize-winning author and journalist with extensive experience in both domestic and international reporting. His career at The Washington Post began in 1965 as a copy boy on the night shift while attending Howard University during the day. He subsequently worked on the City Desk, the Foreign Desk, and the Investigative/Projects Desk. He is credited with the creation of Immersion Journalism. He came to UIUC in 1998 and is currently at work on a book on the survival mechanisms of African Americans who settled in Mattoon, Illinois, after the Civil War. leondash@uiuc.edu William T. Greenough CAS Professor of Psychology; Director Additional Information Among the world's leading investigators of experience-related neuronal plasticity in the mammalian brain, Professor Greenough helped establish the idea that learning and memory involve the rapid formation of new synaptic connections between neurons as well as modification of pre-existing connections. Throughout his career he has sought to understand the brain mechanisms underlying learning and memory. He has been the major proponent of the hypothesis that a key element in both development and memory in mammals is the sculpting (formation combined with retraction) of synaptic connections between neurons. He established several widely accepted phenomena supporting this hypothesis: that new synapses form throughout life in response to environmental influences or specific learned tasks; that new connections can be made very quickly (on the scale of minutes); and that synapse formation is not confined to a small subset of brain structures but is a widely distributed property of the mammalian brain. More recently his work has explored plasticity in nonneuronal cells of the brain as well as the cell biology of fragile X syndrome and alcohol-related neurodevelopmental disorder. He is a member of the National Academy of Sciences; a fellow of the American Psychological Society (received its William James Fellow Award for his research career) and the American Psychological Association (received its Distinguished Scientific Contribution award); a member of the Society of Experimental Psychologists; and a University Scholar of the University of Illinois. He has received the Oakley Kunde award for undergraduate teaching. In April 2003 he received the Award for Distinguished Scientific Contribution, Society for Research in Child Development. He was elected treasurer for 2003-05, Society for Neuroscience. He has trained approximately 20 graduate students and a number of postdoctoral fellows. wgreenou@s.psych.uiuc.edu Bruce Hajek CAS Professor of Electrical and Computer Engineering Additional Information Professor Hajek pursues basic research in the area of modeling, analysis, and optimization of the physical process of communication. He has worked on several aspects of communication within computer networks, including selection of information paths through a network, resolution of contention for access at a network interface, and fair distribution of network resources among competing information flows. He has worked on time-varying wireless communication channels and communication channels in which information is conveyed in timing. A focus of much of his work is to identify theoretical limits and determine how they might be achieved. He has interests in modeling and analyzing random phenomena. He identified the minimum cooling rate required for a general randomized global optimization method, simulated annealing, to reach a global minimum with high probability. He has an interest in the flow of information in biology, and also the role of information within auctions and related allocation mechanisms. For his contributions he has received the Kobayashi Award for Computer Communications, Institute of Electrical and Electronics Engineers (IEEE); and Donald P. Eckman Award, IEEE Automatic Control Society. He was awarded a Guggenheim Fellowship and a National Science Foundation Presidential Young Investigator's Award. He served as editor-in-chief of IEEE Transactions on Information Theory and as president of the IEEE Information Theory Society. He was elected to the National Academy of Engineering in 1999. At UIUC he has been a Beckman Fellow of the Center for Advanced Study and a University Scholar. He is a Bronze Tablet Recipient, a Tau Beta Pi Daniel C. Drucker Eminent Faculty Awardee, and a Founder Professor of Engineering. b-hajek@uiuc.edu Ian Hobson CAS Professor of Music Additional Information British-born Ian Hobson is a musician of tremendous versatility who has earned a worldwide reputation as a pianist, conductor, and teacher. A finalist in the 1977 Van Cliburn International Piano Competition, he later took silver medals at the Arthur Rubinstein and Beethoven International competitions. His international career as a pianist was launched in 1981 when he won first prize at the Leeds International Piano Competition. Hobson's training as a conductor began at Yale University, where he worked with Otto Werner-Mueller. Subsequent studies with Gustav Meier, Daniel Lewis, Leonard Bernstein, Seiji Ozawa, and Andre Previn took place at Aspen and at Tanglewood. Lorin Maazel twice invited Hobson to conduct the Cleveland Orchestra for its Young Conductors' Symposia. Founder and music director of Sinfonia da Camera since 1984, he most recently conducted Sinfonia Varsovia at Carnegie Hall with Ewa Podles as soloist in Karol Szymanowski's "Three Songs" as well as Beethoven's "Eroica" Symphony and Chopin's second piano concerto, conducted and played by Ian Hobson from the keyboard. He has also appeared as guest conductor with the Sinfonia Varsovia, Romanian National Radio Orchestra, Stuttgart Chamber Orchestra, Albanian Radio-Television Orchestra, Santa Rosa Symphony, Fresno Philharmonic, English Chamber Orchestra, Northwest Chamber Orchestra, Nebraska Chamber Orchestra, Pomeranian Philharmonic, North Carolina Symphony, and the Illinois Opera Theatre. Hobson's recordings as conductor or pianist/conductor include repertoire by Falla and Ravel, Ignaz Moscheles, Mendelssohn, Francaix, Milhaud, Saint Saëns, Walton, Sousa, Quincy Porter, and Gillis, to name but a few of the releases found in his more than thirty compact-disc discography on the Arabesque, Zephyr, Albany, BMG/Catalyst, EMI, and Hyperion labels. Hobson has made solo appearances at New York's Mostly Mozart Festival, the Bard Music Festival, and throughout the United States, Europe, and the Far East. He has performed at Carnegie Hall with the American Composers Orchestra and on the Great Performers series at Lincoln Center. Major orchestras of the world with which he has appeared include the Royal Philharmonic, London Philharmonic, Scottish National, Royal Liverpool, Halle, ORD-Vienna, Das Orchester der Beethovenhalle, Israel Sinfonietta, New Zealand Symphony, Sinfonia Varsovia, and the symphony orchestras of Chicago, Philadelphia, Pittsburgh, Saint Louis, Baltimore, Indianapolis, and Houston. He is a Swanlund Endowed Professor of Music. He is much sought after as a judge for both national and international competitions, including serving as a juror for the Tenth Van Cliburn International Piano Competition in 1997. i-hobson@uiuc.edu Nick Holonyak, Jr. CAS Professor of Electrical and Computer Engineering Additional Information Professor Holonyak has made fundamental contributions to the science and technology of elemental and compound semiconductors, including major achievements in solid-state lasers and incoherent light emitters. He invented the first practical light-emitting diode. He and his students built the first p-n diode quantum well lasers and introduced the name quantum well lasers. He is also known for his work on early diffused silicon devices, tunnel diodes, and silicon-controlled rectifiers, including invention of the symmetrical switch (TRIAC) used in wall light dimmers. He was the first to observe inelastic tunneling, which is the beginning of tunneling spectroscopy. Among the thirty-one patents he holds on semiconductor materials and devices are the fundamental patents on quantum-well layer disordering and on the aluminum-based III-V oxide, now being exploited in optoelectronics. For his contributions he has received the IEEE's Morris N. Liebmann Award, Jack A. Morton Award, Edison Medal, Third Millennium Medal, and Medal of Honor; National Medal of Science; Japan Prize; John Scott Medal, City of Philadelphia; Solid State Science and Technology Award, Electrochemical Society; GaAs Symposium Award with Welker Medal; Monie A. Ferst Award, Sigma Xi; Charles H. Townes Award and Frederick Ives Medal, Optical Society of America; National Academy of Sciences Award for the Industrial Application of Science; American Electronics Association 50th Anniversary Award; American Society for Engineering Education Centennial Medallion; Vladimir Karapetoff Eminent Member's Award, Eta Kappa Nu; John Bardeen Award, Minerals, Metals and Materials Society; Global Energy International Prize, Russia; and M.A. Medal of Technology. In 1997 the Optical Society of America established the Nick Holonyak, Jr. Award. He holds an honorary doctorate of science from Northwestern University and honorary doctor of engineering degree from Notre Dame University. He is a member of the National Academy of Engineering, National Academy of Sciences, and American Academy of Arts and Sciences; honorary member, Ioffe Physical Technical Institute (St. Petersburg, Russia); eminent member, Eta Kappa Nu; foreign member, Russian Academy of Sciences; and fellow, American Association for the Advancement of Science. Eight former graduate students are elected members of the National Academy of Engineering. In 2004 he received the Washington Award, Western Society of Engineers; Lemelson-MIT Prize, National Academy of Sciences; and Van Hippel Award, Materials Research Society. In 2005 he was named a laureate of Lincoln Academy. Thomas S. Huang CAS Professor of Electrical and Computer Engineering Additional Information Professor Huang has made fundamental and seminal contributions to a number of areas in the broad field of multidimensional signal processing, analysis, synthesis, visualization, and understanding. His result on the stability of two-dimensional digital filters is included in all textbooks on multidimensional signal processing and is known as the Huang's Theorem. His pioneering work on the compression of two-tone and continuous-tone images laid the groundwork for international image-compression standards. More recently he and his students have initiated the use of Relevance Feedback in querying image and video databases and have spearheaded the fusion of audio and visual information in human-computer interaction. Current research projects include visual face-tracking for emotion recognition and the use of machine-learning techniques in video analysis for surveillance application. He is a member of the National Academy of Engineering; foreign member, Chinese Academy of Engineering and Chinese Academy of Sciences; and fellow, Institute of Electrical and Electronic Engineers, The Optical Society of America, SPIE: The International Optical Society, and International Association for Pattern Recognition. Several of his former students published a "Festschrift" in his honor. Among his numerous awards are the IEEE Jack Kilby Signal Processing Medal and the King-Sun Fu Prize of the International Association for Pattern Recognition. He is currently the William L. Everitt Distinguished Professor of Electrical and Computer Engineering, Research Professor at the Coordinated Science Laboratory, and cochair of the Human Computer Intelligent Interaction major research theme of the Beckman Institute for Advanced Science and Technology. huang@ifp.uiuc.edu Benita S. Katzenellenbogen CAS Professor of Molecular and Integrative Physiology Additional Information In her scholarly work Professor Katzenellenbogen addresses fundamental issues in cell biology, determining how hormones and other chemical signaling agents regulate cell function. She investigates the structure and function of steroid hormone receptors and their role in regulating gene expression and the growth of normal and cancerous tissues. While her work is directed at revealing basic biological mechanisms, she is equally interested in applying research discoveries to practical problems. This has involved the development of selective hormonal agents for menopausal hormone replacement and breast cancer treatment and prevention. Since 1971 she has published more than 200 research articles, contributed 30 book chapters, and coedited a text on hormone-dependent cancers. She is the recipient of numerous awards, honors, and special fellowships from governmental, private, and academic institutions, including the MERIT Award (1991-99), National Cancer Institute at the National Institutes of Health; Jill Rose Award for outstanding research, The Breast Cancer Research Foundation; Ernst Oppenheimer Award, The Endocrine Society; and Distinguished Scientist Award, Susan G. Komen Breast Cancer Foundation. She is a fellow of the American Academy of Arts and Sciences and has served as president of The Endocrine Society. She has trained more than 70 graduate students and postdoctoral scientists, many of whom are leading distinguished careers in academia, governmental agencies, and the pharmaceutical/biotechnology industry. In 2002 she received a Distinguished Alumni Award from The City University of New York. katzenel@life.uiuc.edu Susan Kieffer CAS Professor of Geology Additional Information Professor Kieffer came to UIUC in 2002 as a Walgreen University Professor after a diverse career in universities, government, the United States, and Canada. She is known for her work in geological fluid dynamics and for the Kieffer model of heat capacities and thermodynamic properties of complex minerals. As a planetary scientist, she has studied mega-scale geologic processes, such as meteorite impacts, volcanic eruptions, and river floods, on Earth, Mars, Venus, the Moon, Io, and Triton. Her current interests are global stability and sustainability, and nonlinear processes in geology. She was the second American and first (and only) woman to be awarded the Spendiarov Prize of the U.S.S.R. Academy of Sciences for contributions "to our knowledge of the Earth and the Planets and for her prolific research in fields varying from volcanology and planetology to thermodynamics and river hydraulics." She has also received an Alfred P. Sloan Foundation Fellowship, for her shockwave work on the rocks at Meteor Crater, Arizona; Department of Interior Meritorious Service Award, U.S. Geological Survey, for her work on the 1980 eruption of Mount St. Helens and the 1983 flood on the Colorado River; Mineralogical Society of America Award, for her thermodynamics work; Day Medal, Geological Society of America, for “distinct contributions to geologic knowledge through the application of physics and chemistry to the solution of geologic problems”; Distinguished Alumnus Award, California Institute of Technology; Doctor of Science Honoris Causa, from her undergraduate alma mater, Allegheny College; and was selected as a MacArthur Fellow. She is a member of the National Academy of Sciences and a fellow of the American Academy of Arts and Sciences. skieffer@uiuc.edu Anthony James Leggett CAS Professor of Physics Additional Information Professor Leggett is a leader in the theory of low-temperature physics. His current research interests include the measurement problem in quantum theory, especially ways to exploit the unique properties of low-temperature systems for relevant experimental tests; the theory of Bose-condensed atomic gases; high-temperature superconductivity; and the low-temperature properties of glass. He is the author of The Problems of Physics (1987). He was appointed as a lecturer at the University of Sussex in 1967 and was honored in 1978 by the creation of a personal professorial chair. He received the Maxwell Medal and Prize, British Institute of Physics, "for his contributions to the theory of the behavior of condensed matter at very low temperatures." In 1981 he received two distinguished awards: the 11th Fritz London Memorial Award (of the international low-temperature physics community) "in recognition of outstanding theoretical contributions to our fundamental knowledge of normal and superfluid Fermi liquids"; and the 9th Simon Memorial Prize, British Institute of Physics, "for his outstanding contributions to the theory of superfluid 3He." He has also received the Paul Dirac Medal and Prize, British Institute of Physics; John Bardeen Prize (jointly with G.M. Eliashberg); Eugene Feenberg Memorial Medal; Wolf Prize in Physics, Wolf Foundation, Israel; and Nobel Prize in Physics, Royal Swedish Academy of Sciences (jointly with V.L. Ginzburg and A.A. Abrikosov). He is a fellow of the Royal Society, American Philosophical Society, and American Academy of Arts and Sciences; honorary fellow, British Institute of Physics; foreign member, Russian Academy of Sciences; and foreign associate, National Academy of Sciences. In 2004 he received an Order of the British Empire (KBE) for his contributions to physics. tony@cromwell.physics.uiuc.edu Michael S. Moore CAS Professor of Law Additional Information Widely regarded as one of the leading legal theorists of his generation, Professor Moore has broad research interests across many fields and several disciplines. Among the topics he has addressed in his numerous books and papers have been the psychoanalytic theory of dreams; legal versus psychiatric conceptions of mental illness, the unconscious, and the self; the nature of interpretation, both in law and in other hermeneutic disciplines; the objectivity of moral judgment; the general shape of moral norms, both of obligation and of permission; the justification of punishment and, more particularly, justification and implications of retributive-oriented punishment; the nature of moral responsibility and nature of the natural properties (intention, action, and causation) on which such responsibility is commonly thought to rest; and the nature of liberty, both by itself and as a limit on legislation in a just state. His research includes application of his more abstract theories to concrete issues in our political/legal life, such as whether torture may be used justifiably in the war on terrorism; whether the death penalty has been imposed justly in certain well-known cases; whether certain judicial nominees have been apt candidates for high-court positions; whether the legal prohibition on recreational use of certain drugs can be justified; and whether the destruction of the World Trade Center on September 11, 2001, was one or two events for purposes of interpreting the insurance policy on the Center limiting recovery to $3.6 billion "per occurrence." Professor Moore is a professor of philosophy as well as a professor of law and is codirector of the Program in Law and Philosophy at the University of Illinois. He holds one of two Walgreen Chairs, the first such universitywide chairs. He has previously held The Robert Kingsley Chair, University of Southern California; Leon Meltzer Chair, University of Pennsylvania; Mason Ladd Distinguished Visiting Professorship, University of Iowa; William Minor Lile Distinguished Visiting Professorship, University of Virginia; and Warren Distinguished Professorship, University of San Diego. He has held repeated fellowships at the Research School of the Social Sciences, Australian National University, Canberra; Humanities Research Institute, University of California; and Law and Humanities Program, Harvard University. He has also held faculty positions at Tel Aviv University, Israel; Universidad Torcuato di Tella, Argentina; Erlangen-Nurmberg Universität, Germany; Lviv University, Ukraine; Stanford University; University of Kansas; Northwestern University; and University of California at Berkeley. He is editor-in-chief of the journal Law and Philosophy and serves on the editorial board or as guest editor of four other journals. Two of his books on responsibility theory have been the subject of extensive, published symposiums at the University of Pennsylvania. His next book on causation was the subject of the inaugural conference of the new Center for Law and Philosophy at the Australian National University, Canberra. Half of the recent annual meetings of the Jurisprudence Section of the American Association of Law Schools have been devoted to various aspects of his work in the philosophy of law. micmoore@law.uiuc.edu Richard S. Powers CAS Professor of English Additional Information Professor Powers is the author of eight novels that employ multiple narrative frames to explore connections among disciplines as disparate as photography, artificial intelligence, musical composition, molecular biology, game theory, virtual reality, race, and American business. His fiction and speculative essays have appeared in The New Yorker, Harper's, Esquire, Grand Street, The New York Times Op- Ed Page, Conjunctions, The Yale Review, Common Knowledge, Wired, Zoetrope, Paris Review, and The New York Times Sunday Magazine. His books have won numerous prizes and recognitions, including The Rosenthal and Vursell Awards, both from the American Academy and Institute of Arts and Letters; James Fenimore Cooper Prize, Society of American Historians; Corrington Award; PEN/Hemingway Special Citation; and TIME Magazine's Book of the Year. He has also received the John Dos Passos Prize for Literature; Pushcart Prize, Zoetrope literary magazine; Lannan Literary Award; W.H. Smith Literary Award, Great Britain, for best novel of 2003; and a MacArthur Fellowship. He is a fellow of the American Academy of Arts and Sciences. In 2004 he received the Ambassador Book Award from the English-Speaking Union of the United States. rpowers@uiuc.edu Abigail Salyers CAS Professor of Microbiology Additional Information Professor Salyers has conducted research and taught for twenty-five years at UIUC. She earned her Ph.D. in physics at George Washington University, Washington, D.C. After working as a physicist for nearly ten years, she made the transition to microbiology by doing postdoctoral work at Virginia Polytechnic Institute, Blacksburg, Va. Her research has focused on the bacteria that are normally found in the human intestinal tract, in particular the mechanisms by which these bacteria become resistant to antibiotics. She has published more than 200 scientific papers, two textbooks for undergraduate courses and a book aimed at the general public, Revenge of the Microbes. She serves as a reviewer of grants for the National Institutes of Health and the Department of Energy. She was codirector of the Microbial Diversity Summer Course at the Marine Biological Laboratory, Woods Hole, Mass., 1995-99. She has provided expert testimony on genetically modified plants and antibiotic use in agriculture for a variety of regulatory agencies in Europe and the United States, and she has testified before a Congressional subcommittee on genetically modified plants. She is currently a member of an FDA advisory committee on food safety. She served as president of the American Society for Microbiology, 2001-02. abigails@uiuc.edu Lou van den Dries CAS Professor of Mathematics Additional Information Over the past ten years Professor van den Dries has applied metamathematical (model-theoretic) methods to understand one of the basic objects of mathematics, the real number system R, and obtain large families of subsets of R that have good topological and geometric properties. In the early 1980s he isolated the crucial "logical" property O-minimality that has since become a recognized area within model theory. In addition to his work on O-minimality, he has made fundamental contributions to such areas as the model theory of analytic functions on the p-adic numbers, decidability of the algebraic integers, and the logic of finite fields. Currently he serves as editor of the Illinois Journal of Mathematics and of The Journal of Symbolic Logic. His doctoral dissertation remains a classic in the applications of logic to algebra. vddries@math.uiuc.edu Dale J. Van Harlingen CAS Professor of Physics Additional Information Professor Van Harlingen is an experimental condensed matter physicist who has focused on quantum phenomena and phase dynamics in superconducting systems. He has made contributions to the field of Scanning Probe Microscopy and was instrumental in the development of the Scanning SQUID Microscope for magnetic imaging of vortices in superconductor systems. He pioneered the phase-sensitive SQUID interferometry technique for determining the symmetry of the order parameter in unconventional superconductors and verified the d-wave symmetry of the high-temperature superconductors. For this work, he was awarded the 1998 Oliver E. Buckley Prize (with Donald Ginsberg), American Physical Society. His current interests include the symmetry and mechanism of unconventional superconductors, transport in high-temperature superconductor nanowires, and quantum computing using superconductor devices. Currently he is a Professor of Physics and the Donald E. Biggers Professor of Engineering; a principal investigator at the Frederick Seitz Materials Research Laboratory; and a member of the Micro and Nanotechnology Laboratory. Before joining the faculty at UIUC he was a National Science Foundation NATO Postdoctoral Fellow at the Cavendish Laboratory, University of Cambridge, and postdoctoral researcher at the University of California at Berkeley. He spent a sabbatical year as a Miller Fellow at Berkeley and was the recipient of a Guggenheim Fellowship. Member, American Academy of Arts and Sciences and National Academy of Sciences; fellow, American Physical Society. vanharlingen@mrl.uiuc.edu Carl R. Woese CAS Professor of Microbiology Additional Information Professor Woese is currently studying two interrelated central biological problems: the nature of the universal ancestor and the role of horizontal gene transfer in evolution. He is known for determining evolutionary relationships by molecular sequence comparisons, using the ribosomal RNA molecule. His work has opened the world of microorganism to evolutionary study and led to the discovery of Archaea, a domain of microorganism that is no more related to ordinary bacteria than it is to the higher forms. He is also responsible for determining (with H.F. Noller) the secondary structure of the two rRNA components of the ribosome, the cellular mechanism involved in the translation of genetic information into protein sequence. For his work he has been honored by election to the American Academy of Arts and Sciences and National Academy of Sciences. He has received the John D. and Catherine T. MacArthur Award; 1990 Leeuwenhoek Medal; Waksman Award; National Medal of Science; and Crafoord Prize in Biosciences, Royal Swedish Academy of Sciences. In 1996 he was named the first recipient of the Stanley O. Ikenberry Endowed Chair at UIUC. In 2004 he was elected to the American Philosophical Society. carl@phylo.life.uiuc.edu cas : professors emeriti