Johns Hopkins University Whiting School of Engineering

James Fill


Professor
Applied Mathematics and Statistics
Secondary Appointment: Professor, Department of Computer Science, 2001-2012 (renewable multi-year terms)
http://www.ams.jhu.edu/~fill/ ()

Whitehead Hall 306-F (office)
410-516-7219 (office)
jimfill@jhu.edu (primary)

Education

Ph.D. 1980, University of Chicago
M.S. 1979, University of Chicago
B.S. 1976, University of Illinois

Experience

1995: Professor of Applied Mathematics and Statistics, The Johns Hopkins University
2001-2012: Professor of Computer Science, The Johns Hopkins University (secondary appointment; renewable multi-year terms)
2001-2001: Visiting Researcher, Microsoft Research, Theory Group, Redmond, Washington
1991-1995: Associate Professor of Mathematical Sciences, The Johns Hopkins University
1991-1991: Visiting Associate Professor of Mathematics, Massachusetts Institute of Technology, Fall
1988-1991: Assistant Professor of Mathematical Sciences, The Johns Hopkins University
1980-1988: Assistant Professor of Statistics, Stanford University
1986-1987: Visiting Assistant Professor of Statistics, University of Chicago
1974-1974: Data Analyst, Division of Research and Statistics, American Hospital Association, Chicago, Summer

Research Areas

analysis of algorithms and data structures
Monte Carlo simulation
stochastic processes
random data structures
probability

Journal Articles

Fill, J.A., Kahn, J. (submitted in September, 2011). Comparison inequalities and fastest-mixing Markov chains. Annals of Applied Probability. 32.
Fill, J.A., Lyzinski, V. (submitted in January, 2012). Hitting times and interlacing eigenvalues: a stochastic approach using intertwinings. Electronic Journal of Probability. 22.
Fill, J.A. (submitted in February, 2012). Distributional convergence for the number of symbol comparisons used by QuickSort. Annals of Applied Probability. 16.
Fill, J.A., Janson, S. (submitted in February, 2012). The number of bit comparisons used by Quicksort: an average-case analysis. Electronic Journal of Probability. 23.
Fill, J.A., Nakama, T. (submitted in February, 2012). Distributional convergence for the number of symbol comparisons used by QuickSelect. Advances in Applied Probability. 26.

Conference Proceedings

Bindjeme, P., Fill, J.A. "Exact $L^2$-distance from the limit for QuickSort key comparisons (refereed extended abstract)", 23rd International Meeting on Probabilistic, Combinatorial and Asymptotic Methods for the Analysis of Algorithms, 2012 (submitted in January, 2012), p.9.
Bindjeme, P., Fill, J.A. "The limit distribution for the number of symbol comparisons used by QuickSort is nondegenerate (refereed extended abstract)", 23rd International Meeting on Probabilistic, Combinatorial and Asymptotic Methods for the Analysis of Algorithms, 2012 (submitted in January, 2012), p.12.
Beer, E., Fill, J.A., Janson, S., Scheinerman, E.R. "On vertex, edge, and vertex-edge random graphs (refereed extended abstract)", 2011 Proceedings of the Eighth Workshop on Analytic Algorithmics and Combinatorics (ANALCO), 2011, pp.16-22.
Fill, J.A. "Distributional convergence for the number of symbol comparisons used by QuickSort (refereed extended abstract)", Proceedings of the 21st International Meeting on Probabilistic, Combinatorial, and Asymptotic Methods in the Analysis of Algorithms, 2010, pp.221-234.
Vallee, B., Clement, J., Fill, J., Flajolet, P. "The Number of Symbol Comparisons in QuickSort and QuickSelect", AUTOMATA, LANGUAGES AND PROGRAMMING, PT I, 2009, vol.5555, pp.750-763.
 View record in Web of Science SM

Awards & Honors

1999: elected Fellow, Institute of Mathematical Statistics
1976 - 1980: McCormick Foundation Fellow, University of Chicago
1976 - 1979: NSF Graduate Fellow
1976: Summa Cum Laude, Highest Distinction in Mathematics, Highest Distinction in Statistics, University of Illinois
1978 - 0: Member, Sigma Xi, University of Chicago
1976 - 0: Member, Phi Kappa Phi, University of Illinois
1976 - 0: Member, Phi Beta Kappa, University of Illinois
1973 - 0: Member, Phi Eta Sigma, University of Illinois

Presentations

Invited Short Course (6 hours of lectures): ANALCO (Workshop on Analytic Algorithms and Combinatorics) Winter School, New Orleans, Louisiana, January, 2013, January 9, 2013
University of Pennsylvania, Statistics, fall, 2012, October 8, 2012
Duke University, Mathematics, fall, 2012, September 10, 2012
Institute of Applied Mathematics, Chinese Academy of Sciences, Beijing, China, July, 2012 (Invited Address), July 23, 2012
Eighth Workshop on Markov Processes and Related Topics, Beijing Normal University, Beijing, China, July, 2012 (Invited Address), July 16, 2012
Invited Short Course (6 hours of lectures): ANALCO (Workshop on Analytic Algorithms and Combinatorics) Winter School, Kyoto, Japan, January, 2012 (postponed one year due to unavailability of venue), January 21, 2012
22nd International Meetingon Probabilistic, Combinatorial, and Asymptotic Methods in the Analysis of Algorithms (AofA 2011), Bedlewo, Poland, June, 2011 (Invited: Plenary Address), June 12, 2011
Applied Stochastic Models and Data Analysis (ASMDA2011), Session on "Sequential Optimization in Stochastic Processes" (tentative title), Rome, Italy, June, 2011 (Invited), June 7, 2011
George Washington University, Statistics, April, 2011, April 8, 2011
Workshop on Analytic Algorithms and Combinatorics (ANALCO11),
San Francisco, California, January, 2011 (Invited), January 22, 2011
21st International Meeting on Probabilistic, Combinatorial, and Asymptotic
Methods for the Analysis of Algorithms (AofA 2010),
Vienna, Austria, June-July, 2010 (Invited), June 28, 2010
Joint Mathematics Meetings, AMS Special Session on "Markov Chains and Their Statistical Applications", San Francisco, California, January, 2010 (Invited), January 13, 2010
American University, Mathematics and Statistics, December 1, 2009
20th International Meeting on Probabilistic, Combinatorial, and Asymptotic Methods in the Analysis of Algorithms (AofA 2009). Fréjus, France. 2009-06-00. (Invited), May 31, 2009
25th Nordic and 1st British-Nordic Congress of Mathematicians, session on Discrete Probability. Oslo, Norway. 2009-06-00. (Invited), May 31, 2009
Summer School in Applied Probability. Carleton University, Ottawa, Ontario, Canada. 2009-05-00. (Invited Short Course [one week, 10 hours of lectures]), May 1, 2009
. Mittag-Leffler Institute, Djursholm (near Stockholm), Sweden. 2009-05-00. (Invited), April 30, 2009
University of Pennsylvania, Mathematics, November 1, 2008
2008 International Workshop on Applied Probability. University of Compiègne, France. 2008-07-00. (Invited), June 30, 2008
World Congress in Probability and Statistics (WCPS08), session on Probabilistic Analysis of Algorithms. Singapore. 2008-07-00. (Invited), June 30, 2008
Conference on Analysis and Probability. University of Nice Sophia Antipolis, France. 2008-06-00. (Invited), May 31, 2008
2008 Conference on Analysis of Algorithms (AofA 2008). Maresias, Brazil. 2008-04-00. (Invited), March 31, 2008
Workshop on Markov-Chain Monte Carlo Methods. Newton Institute, Cambridge, England. 2008-03-00. (Invited), February 29, 2008
Workshop on Analytic Algorithms and Combinatorics (ANALCO08). San Francisco, California. 2008-01-00. (Invited), December 31, 2007
Applied Probability Day. Columbia University. 2007-06-00. (Invited), May 31, 2007
Third Workshop on Monte Carlo Methods. Harvard University. 2007-05-00. (Invited), April 30, 2007
School "Information and Randomness 2006". Santiago, Chile. 2006-12-00. (Invited Short Course of Three Lectures), December 1, 2006
Conference to Celebrate 65th Birthdays of Steve Stigler and Mike Wichura. University of Chicago. 2006-11-00. (Invited), October 31, 2006
Analysis of Algorithms 2006 (AofA 2006). Bilzen, Belgium. 2006-07-00. (Invited), June 30, 2006
Applied Probability Workshop. Carleton University, Ottawa, Ontario, Canada. 2006-06-00. (Invited), May 31, 2006
Winter Workshop on "Frontiers of Theoretical Statistics". University of Florida. 2006-01-00. (Invited), December 31, 2005
Small Deviation Probabilities and Related Topics (second international conference). St. Petersburg, Russia. 2005-09-00. (Invited: Plenary Address), September 1, 2005
International Conference on the Analysis of Algorithms. Barcelona, Spain. 2005-06-00. (Invited), May 31, 2005
Workshop on Markov Chains in Algorithms and Statistical Physics. Mathematical Sciences Research Institute, Berkeley, CA. 2005-01-00. (Invited), December 31, 2004
Workshop on Sharp Thresholds for Mixing Times. American Institute of Mathematics, Palo Alto, CA. 2004-12-00. (Invited: Invited Participant and Invited Address), December 1, 2004
. University of Maryland, Baltimore County, Mathematics and Statistics. 2004-09-00., October 1, 2004
Oberwolfach Mini-Workshop on Probability Theory on Trees and Analysis of Algorithms. Oberwolfach, Germany. 2004-08-00. (Invited: three Invited Addresses), August 1, 2004
Eighth Brazilian School of Probability (Escola Brasileira de Probabilidade). Ubatuba, Sao Paulo, Brazil. 2004-08-00. (Invited), July 31, 2004
Seventh Iranian Statistical Conference. Allameh Tabatabayie University, Tehran, Iran. 2004-08-00. (Invited), July 31, 2004
10th Seminar on Analysis of Algorithms. Mathematical Sciences Research Institute, Berkeley, CA. 2004-06-00. (Invited: Plenary Address), June 1, 2004
. University of Delaware, Mathematical Sciences. 2004-05-00., April 30, 2004
Meeting on Markov Chains and Random Algorithms. Cornell University. 2004-05-00. (Invited), April 30, 2004
. University of Pennsylvania, Mathematics. 2004-02-00., January 31, 2004
. University of Rochester, Mathematics. 2004-02-00., January 31, 2004
ACM-SIAM Symposium on Discrete Algorithms (SODA04). New Orleans, LA. 2004-01-00. (Invited), December 31, 2003
East-Asian and Pacific Regional Meeting of the Bernoulli Society, session on Probabilistic Analysis of Algorithms. Kowloon, Hong Kong. 2003-12-00. (Invited), November 30, 2003
First Northeastern Probability Seminar. CUNY Graduate Center, New York, NY. 2003-11-00. (Invited), October 31, 2003
Research Symposium on Markov Chains: Algorithms, Applications and Theory. University of Durham, England. 2003-07-00. (Invited), June 30, 2003
Ninth Seminar on Analysis of Algorithms. San Miniato, Italy. 2003-06-00. (Invited), May 31, 2003
Joint Mathematics Meetings, Special Session on "Discrete Models". Baltimore, MD. 2003-01-00. (Invited), December 31, 2002
Program on Stochastic Computation. Statistical and Applied Mathematical Sciences Institute, Research Triangle Park, NC. 2002-09-00. (Invited), August 31, 2002
Workshop on Randomised Algorithms. Newton Institute, Cambridge, England. 2002-08-00. (Invited), July 31, 2002
IMS 65th Annual Meeting. Banff, Alberta, Canada. 2002-07-00. (Invited), June 30, 2002
EURANDOM Workshop on Discrete Probability. Eindhoven, The Netherlands. 2002-06-00. (Invited: Plenary Address), June 1, 2002
Eighth Seminar on the Mathematical Analysis of Algorithms. Strobl (near Salzburg), Austria. 2002-06-00. (Invited), May 31, 2002
Graduate Course on Finite Markov Chains. Oberwolfach, Germany. 2002-05-00. (Invited Lecture Series: one week; joint with Laurent Saloff-Coste), May 1, 2002
. University of Chicago, Statistics. 2002-04-00., March 31, 2002
2002 AMS and MAA Spring Southeastern Section Meeting, Special Session on "Probability and Combinatorics". Atlanta, GA. 2002-03-00. (Invited), February 28, 2002
International Workshop on Applied Probability. Caracas, Venezuela. 2002-01-00. (Invited: Plenary Address), January 1, 2002
Stochastics Meeting Lunteren, 2001. Lunteren, The Netherlands. 2001-11-00. (Invited: series of two Invited Addresses), November 1, 2001
. Microsoft Research, Theory Group, Redmond, Washington. 2001-10-00., September 30, 2001
Third Northwest Probability Seminar. Seattle, WA. 2001-10-00. (Invited), September 30, 2001
Oberwolfach Meeting on Combinatorics, Probability and Computing. Oberwolfach, Germany. 2001-09-00. (Invited), August 31, 2001
IMS 64th Annual Meeting. Atlanta, GA. 2001-08-00. (Invited), July 31, 2001
Seventh Seminar on the Mathematical Analysis of Algorithms. Tatihou Island (in Normandy), France. 2001-07-00. (Invited), June 30, 2001
. Ohio State University, Mathematics. 2001-03-00., February 28, 2001
. Microsoft Research, Theory Group, Redmond, Washington. 2001-02-00., January 31, 2001
. New York University, Courant Institute of Mathematical Sciences. 2001-02-00., January 31, 2001
. University of Washington, Mathematics. 2001-02-00., January 31, 2001
Workshop on Topics in Finite Markov Chains. Rome, Italy. 2000-12-00. (Invited: Invited "Minicourse" of three lectures), December 1, 2000
. George Washington University, Statistics. 2000-09-00., August 31, 2000
Colloquium on Mathematics and Computer Science: Algorithms, Trees, Combinatorics and Probabilities. Versailles, France. 2000-09-00. (Invited), August 31, 2000
Sixth Seminar on the Mathematical Analysis of Algorithms. Krynica Morska (near Gdansk), Poland. 2000-07-00. (Invited), June 30, 2000
26th Annual Graduate Mathematics Conference. Syracuse University. 2000-04-00. (Invited: Keynote Address), April 1, 2000
. Georgia Institute of Technology, Algorithms, Combinatorics, and Optimization. 2000-02-00., January 31, 2000
. Georgia Institute of Technology, Mathematics. 2000-02-00., January 31, 2000
. University of Maryland, Baltimore County, Mathematics and Statistics. 2000-02-00., January 31, 2000
. Albert Ludwigs University of Freiburg (Germany), Institute for Mathematical Stochastics. 2000-01-00., December 31, 1999
. Christian Albrechts University of Kiel (Germany), Mathematics. 2000-01-00., December 31, 1999
Ninth International Conference on Random Structures and Algorithms. Poznan, Poland. 1999-08-00. (Invited: Plenary Address), August 1, 1999
IMS Probability Workshop on Markov Chain Monte Carlo: Advances in Theory and Applications. Baltimore, MD. 1999-08-00. (Invited), July 31, 1999
Fifth International Seminar on the Mathematical Analysis of Algorithms. Barcelona, Spain. 1999-06-00. (Invited), May 31, 1999
Workshop on Monte Carlo Methods. Fields Institute, Toronto, ON, Canada. 1998-10-00. (Invited), September 30, 1998
The 1998 Institute for Elementary Studies (IES). Door County, Ellison Bay, WI. 1998-08-00. (Invited: Invited Participant and Invited Address), August 1, 1998
DIMACS-sponsored The Fourth International Seminar on "Average-Case" Analysis of Algorithms. Princeton, NJ. 1998-07-00. (Invited), June 30, 1998
Probability Intern Program. Center for the Mathematical Sciences, University of Wisconsin-Madison. 1998-07-00. (Invited), June 30, 1998
Warwick Randomised Algorithms and Stochastic Simulation (WRASS) Workshop. University of Warwick, England. 1998-07-00. (Invited), June 30, 1998
Workshop on Exact Simulation. Rebild, Denmark. 1997-11-00. (Invited), October 31, 1997
Oberwolfach Meeting on Random Graphs and Combinatorial Structures. Oberwolfach, Germany. 1997-09-00. (Invited), August 31, 1997
The Third Dagstuhl Meeting on "Average-Case" Analysis of Algorithms. Dagstuhl, Germany. 1997-07-00. (Invited), June 30, 1997
The Third International Symposium on Probability and its Applications. Park City, UT. 1997-07-00. (Invited), June 30, 1997
DIMACS Workshop on Microsurveys in Discrete Probability. Princeton, NJ. 1997-06-00. (Invited), May 31, 1997
29th Annual ACM Symposium on the Theory of Computing. El Paso, TX. 1997-05-00. (Invited), April 30, 1997
Mid-Atlantic Day for Combinatorics and Probability. Baltimore, MD. 1996-11-00. (Invited), October 31, 1996
Joint Statistical Meetings. Chicago, IL. 1996-08-00. (Invited), July 31, 1996
Inaugural Professorial Lecture. The Johns Hopkins University. 1996-03-00. (Invited: University-wide Address), March 1, 1996
IMS 58th Annual Meeting. Montreal, Quebec, Canada. 1995-07-00., June 30, 1995
8th INFORMS Applied Probability Group Conference. Atlanta, GA. 1995-06-00. (Invited), May 31, 1995
. Mittag-Leffler Institute, Djursholm (near Stockholm), Sweden. 1995-05-00. (Invited), April 30, 1995
. New York University, Courant Institute of Mathematical Sciences. 1995-04-00., March 31, 1995
. National Institute of Standards and Technology, Computing and Applied Mathematics Laboratory, Statistical Engineering Division. 1995-03-00., February 28, 1995
IMS 57th Annual Meeting. Chapel Hill, NC. 1994-06-00. (Invited), May 31, 1994
. American Society for Quality Control, Maryland Section. 1993-12-00., November 30, 1993
. Rutgers University, Statistics. 1993-10-00., September 30, 1993
Workshop: Finite Markov Chain Renaissance. Institute for Mathematics and Applications, Minneapolis, MN. 1993-10-00. (Invited), September 30, 1993
IMS Directions in Probability Workshop on Monte Carlo Markov Chains. Stanford, CA. 1993-08-00. (Invited), July 31, 1993
ICMS Workshop on Randomness and Computation. Edinburgh, Scotland. 1993-07-00. (Invited), June 30, 1993
Clifford Lectures. Tulane University. 1993-03-00. (Invited), February 28, 1993
. Northwestern University, Statistics. 1993-01-00., December 31, 1992
. University of Chicago, Statistics. 1993-01-00., December 31, 1992
ORSA/TIMS Joint National Meeting. San Francisco, CA. 1992-11-00. (Invited), October 31, 1992
Mid-Atlantic Regional Probability and Statistics Day. Laurel, MD. 1992-10-00. (Invited: Special Invited Address), October 1, 1992
. Applied Physics Laboratory of The Johns Hopkins University, Laurel, MD. 1992-10-00., September 30, 1992
DIMACS Workshop on Expander Graphs. Princeton, NJ. 1992-05-00. (Invited), April 30, 1992
. Boston University, Mathematics. 1991-10-00., September 30, 1991
. Massachusetts Institute of Technology, Mathematics. 1991-10-00., September 30, 1991
. Tufts University, Mathematics. 1991-10-00., September 30, 1991
. American Statistical Association, Deleware Chapter. 1991-05-00., April 30, 1991
. Carnegie Mellon University. 1991-05-00., April 30, 1991
. Supercomputing Research Center, Bowie, MD. 1991-05-00., April 30, 1991
. University of Pennsylvania, Statistics. 1991-04-00., March 31, 1991
. Yale University, Statistics. 1991-03-00., February 28, 1991
Mid-Atlantic Regional Probability and Statistics Day. Washington, DC. 1990-10-00. (Invited: Special Invited Address), October 1, 1990
IMS 53rd Annual Meeting. Uppsala, Sweden. 1990-08-00., July 31, 1990
. Stanford University, Statistics. 1990-07-00., June 30, 1990
IMS Eastern Regional Meeting. Baltimore, MD. 1990-04-00., March 31, 1990
. Stanford University, Statistics. 1989-08-00., July 31, 1989
Joint Statistical Meetings. Washington, DC. 1989-08-00., July 31, 1989
. Harvard University, Statistics. 1989-05-00., April 30, 1989
. University of Maryland, Baltimore County, Mathematics and Statistics. 1989-04-00., March 31, 1989
. University of Maryland, Mathematics. 1988-10-00., September 30, 1988
Mid-Atlantic Regional Probability and Statistics Day. Laurel, MD. 1988-10-00., September 30, 1988
IMS Symposium on Probability and its Applications. Fort Collins, CO. 1988-08-00., July 31, 1988
. Harvard University, Mathematics. 1988-05-00., April 30, 1988
. The Johns Hopkins University, Mathematical Sciences. 1988-03-00., February 29, 1988
. University of Michigan, Statistics. 1988-03-00., February 29, 1988
. University of California at Berkeley, Statistics. 1987-10-00., September 30, 1987
16th Conference on Stochastic Processes and Their Applications. Stanford University. 1987-08-00., July 31, 1987
Joint Statistical Meetings. San Francisco, CA. 1987-08-00., July 31, 1987
. Northwestern University, Statistics. 1987-03-00., February 28, 1987
. Purdue University, Statistics. 1987-02-00., January 31, 1987
. University of Chicago, Statistics. 1986-11-00., October 31, 1986
Joint Statistical Meetings. Cincinnati, OH. 1982-08-00., July 31, 1982
Joint Colloquium with Stanford University. University of California at Berkeley. 1982-04-00., March 31, 1982
IMS Western Regional Meeting. Victoria, BC, Canada. 1981-06-00. (Invited), May 31, 1981
AMS Special Session on Probability on Algebraic and Topological Structures. Tampa, FL. 1991-03-00. (Invited), March 1, 1981

Committees

2012: University: Student Life Constituent Committee
2011: University: Homewood Grievance Committee
2010: Undergraduate Studies, Director
1995: Department committee duties: Faculty Search and Promotion, 1995 - present; Distinguished Awards Committee, 2011 - present; Introductory Exam Committee, 2005, Chair: 2004, 2010-2011; Communications (including organization of seminars), 2004 - 2005, Chair: 1998 - 2000, 2002 - 2004, 2005 - 2008, 2009; Acheson J. Duncan Fund, 1996 - present
2011 - 2011: School of Engineering: Distinguished Awards Committee
1995 - 2011: University and School of Engineering: Nine ad hoc promotion and/or tenure committees, four as Chair, 1995 - 2011 (one with activity in 2011)
2000 - 2010: University and School of Engineering: Three ad hoc (full) professor appointment committees, 2000 - 2010 (one in 2009 - 2010)
2007 - 2008: School of Engineering: Curriculum Committee, 2007 - 2008
2005 - 2008: University: Homewood Safety and Security, 2005 - 2008
2006 - 2007: University: Marshal for all Undergraduate Degrees in Engineering, 2007
2003 - 2007: School of Engineering: Departmental Faculty Solicitor, United Way Campaign, 1999 - 2000, 2003 - 2007
2004 - 2005: University and School of Engineering: Ad hoc promotion committee, Chair, 2004 - 2005
2003 - 2004: School of Engineering: Middle States Commission of Higher Education Accreditation, 2003 - 2004
0 - 0: University: Steering Committee of the Faculty Assembly, 1999 - 2002; Secretary, 1999 - 2000; Chair, 2000 - 2001; position vacated due to sabbatical leave, 2001 - 2002
0 - 0: University: Marshal for Society of Scholars, Deans, Officers of the University, and Trustees, University Commencement Ceremony, 1999
0 - 0: Stanford University, Department of Statistics, committee duties: University Freshman Advisor, 2 years; Ph.D. Qualifying Exams, 5 years, chair 1 year; Curriculum, 2 years; M.S. Advising and Recruiting, 2 years, chair 1 year; Ph.D. Admissions and Awards, 1 year; Seminars, chair 1 year; Computing, 1 year
: Department committee duties: Faculty Search and Promotion, 1995 - present; Communications (including organization of seminars), 2004 - 2005, Chair: 1998 - 2000, 2002 - 2004, 2005 - 2008, 2009); Acheson J. Duncan Fund, 1996 - present; Introductory Exam Committee, 2005, Chair: 2004; Qualifying Examinations Restructuring, Chair: 2004; Ph.D. Qualifying Exams, Subchair, Spring, 1989 and 1995 - 1997, 2002 - 2004; Academic Affairs, Chair: 2000 - 2001; Seminars and Social Events, Chair: 1993 - 1998; Safety, 1994 - 1998; Probability and Statistics Course Advisory Committee, 1996 - 1998; Probability and Statistics Curriculum, 1994 - 1995; Undergraduate Programs, 1992 - 1994, Chair: Spring, 1993; Graduate Admissions and Financial Aid, 1988 - 1993; Seminars, Chair: 1989 - 1991; Social Events, 1988 - 1989, 1990 - 1991; Graduate Student Programs and Review, 1988 - 1989