# Santa Fe Institute

# Working Papers

**Contact information of Santa Fe Institute:**

Postal: 1399 Hyde Park Road, Santa Fe, New Mexico 87501

Web page: http://www.santafe.edu/sfi/publications/working-papers.html

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(Thomas Krichel)** **Series handle:** repec:wop:safiwp
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### 2002

**02-02-007 Sunk-Cost Effects Made Ancient Societies Vulnerable to Collapse***by*Marco A. Janssen & Marten Scheffer & Timothy A. Kohler**02-01-001 Demand Storage, Market Liquidity, and Price Volatility***by*Marcus G. Daniels & J. Doyne Farmer & Giulia Iori & Eric Smith**02-02-009 Optimal Design, Robustness, and Risk Aversion***by*M. E. J. Newman & Michelle Girvan & J. Doyne Farmer**02-02-008 Evolving Protein Interaction Networks through Gene Duplication***by*Romualdo Pastor-Satorras & Eric Smith & Ricard V. Solé**02-02-006 Mutational Robustness and Asymmetric Functional Specialization of Duplicate Genes***by*Andreas Wagner**02-02-005 Random Graphs as Models of Networks***by*M. E. J. Newman**02-02-003 The Evolution of Evolvability in Genetic Linkage Patterns***by*John W. Pepper**02-01-002 A Comparison of Evolutionary and Coevolutionary Search***by*Ludo Pagie & Melanie Mitchell

### 2001

**01-12-082 Distributing Intelligence and Organizing Diversity in New Media Projects***by*Monique Girard & David Stark**01-11-071 Self Organized Critical Traffic in Parallel Computer Networks***by*Sergi Valverde & Ricard V. Solé**01-10-055 Path Integration on a Quantum Computer***by*Joseph F. Traub & Henryk Wozniakowski**01-09-046 Percolation and Epidemics in a Two-Dimensional Small World***by*M. E. J. Newman & I. Jensen & R. M. Ziff**01-08-044 Minimum Cycle Bases of Product Graphs***by*Wilfried Imrich & Peter F. Stadler**01-07-036 Two Degrees of Separation in Complex Food Webs***by*Richard J. Williams & Neo D. Martinez & Eric L. Berlow & Jennifer A. Dunne & Albert-Laszlo Barabasi**01-06-032 The Structure of Growing Social Networks***by*Emily M. Jin & Michelle Girvan & M. E. J. Newman**01-05-028 Recovery After Mass Extinction: Evolutionary Assembly in Large-Scale Biosphere Dynamics***by*Ricard V. Solé & José M. Montoya & Douglas H. Erwin**01-04-023 Evolution of Strategies in Repeated Stochastic Games***by*Anders Eriksson & Kristian Lindgren**01-03-015 The Coevolution of Genes and the Genetic Code***by*Guy Sella & David H. Ardell**01-02-012 Regularities Unseen, Randomness Observed: Levels of Entropy Convergence***by*James P. Crutchfield & David P. Feldman**01-01-002 The Role of Begging and Sibling Competition in Foraging Strategies of Nestlings***by*Miguel A. Rodriguez-Girones & Magnus Enguist & Michael Lachmann**01-12-083 Computation with Switching Map Systems: Nonlinearity and Computational Complexity***by*Yuzuru Sato & Makoto Taiji & Takashi Ikegami**01-12-081 Pathways of Property Transformation: Enterprise Network Careers in Hungary, 1988-2000***by*David Stark & Bal‡zs Vedres**01-12-080 Money and the Monetization of Credit***by*Martin Shubik**01-12-079 Two-Tiered Evolution of Neiserria meningitis: How Within-Host Ecology and Between-Host Epidemiology Expedite Phase Shifting***by*Lauren W. Ancel & Bruce R. Levin & Anthony R. Richardson & Igor Stojiljkovic**01-12-078 Applying Network Theory to Epidemics: Control Measures for Outbreaks of Mycoplasma pneumoniae***by*Lauren W. Ancel & M. E. J. Newman & Michael Martin & Stephanie Schrag**01-12-077 Community Structure in Social and Biological Networks***by*Michelle Girvan & M. E. J. Newman**01-12-076 Large Extinctions in an Evolutionary Model: The Role of Innovation and Keystone Species***by*Sanjay Jain & Sandeep Krishna**01-12-075 Crashes, Recoveries, and 'Core-Shifts' in a Model of Evolving Networks***by*Sanjay Jain & Sandeep Krishna**01-12-074 Variations on the Theme of Scarf's Counter-Example***by*Alok Kumar & Martin Shubik**01-12-073 Exact Solutions of Epidemic Models on Networks***by*M. E. J. Newman**01-11-072 Interacting Agents and Continuous Opinions Dynamics***by*Gérard Weisbuch & Guillaume Deffuant & Frederic Amblard & Jean Pierre Nadal**01-11-070 Almost All Graphs of Degree 4 are 3-colorable***by*Dimitris Achlioptas & Cristopher Moore**01-11-069 Topological Properties of Food Webs: From Real Data to Community Assembly Models***by*José M. Montoya & Ricard V. Solé**01-11-068 Optimization in Complex Networks***by*Ramon Ferrer i Cancho & Ricard V. Solé**01-11-067 Secondary Structure Prediction for Aligned RNA Sequences***by*Ivo l. Hofacker & Martin Fekete & Peter F. Stadler**01-11-066 Ego-Centered Networks and the Ripple Effect***by*M. E. J. Newman**01-11-065 Self-organized Instability in Complex Ecosystems***by*Ricard V. Solé & David Alonso & Alan McKane**01-11-064 Decisionmetrics: A Decision-Based Approach to Econometric Modeling***by*Spyros Skouras**01-11-063 Economic Man in Cross-Cultural Perspective: Behavioral Experiments in Fifteen Small-Scale Societies***by*Joseph Henrich & Robert Boyd & Samuel Bowles & Colin Camerer & Ernst Fehr & Herbert Gintis & Richard McElreath & Michael Alvard & Abigail Barr & Jean Ensminger & Kim Hill & Francisco Gil-White & Michael Gurven & Frank Marlowe & John Q. Patton & Natalie Smith & David Tracer**01-10-062 Exploring the Evolution of Complexity in Signaling Networks***by*John H. Holland**01-10-061 Emulation, Inequality, and Work Hours: Was Thorsten Veblen Right?***by*Samuel Bowles**01-10-060 The Evolution of Inequality***by*Samuel Bowles**01-10-059 The Puzzle of Prosociality***by*Herbert Gintis**01-10-058 The Hitchhiker's Guide to Altruism: Gene-Culture Coevolution, and the Internalization of Norms***by*Herbert Gintis**01-10-057 Neutral Evolution and Aesthetics: Vladimir Nabokov and Insect Mimicry***by*Victoria N. Alexander**01-10-056 Circuit Bases of Strongly Connected Digraphs***by*Petra M. Gleiss & Josef Leydold & Peter F. Stadler**01-09-054 Inflationary Bias in a Simple Stochastic Economy***by*Ioannis Karatzas & Martin Shubik & William D. Sudderth & John Geanakoplos**01-09-053 Barrier Trees of Degenerate Landscapes***by*Christoph Flamm & Ivo L. Hofacker & Peter F. Stadler & Michael T. Wolfinger**01-09-052 Evolution in Systems of Ligation-Based Replicators***by*Bårbel M. R. Stadler & Peter F. Stadler & Peter R. Wills**01-09-051 Estimating Coarse Gene Network Structure from Large-Scale Gene Perturbation Data***by*Andreas Wagner**01-09-050 Reconstructing Pathways in Large Genetic Networks from Genetic Perturbations***by*Andreas Wagner**01-09-049 Chaos in Learning a Simple Two Person Game***by*Yuzuru Sato & Eizo Akiyama & J. Doyne Farmer**01-09-048 Norm Compliance and Strong Reciprocity***by*Rajiv Sethi & E. Somanathan**01-09-047 How to Reconstruct a Large Genetic Network from***by*How to Reconstruct a Large Genetic Network from n Gene Perturbations in Fewer than n2 Easy Steps**01-08-045 Tiling Groups for Wang Tiles***by*Cristopher Moore & Ivan Rapaport & Eric Rémila**01-08-043 Non-Explanatory Equilibria: An Extremely Simple Game With (Mostly) Unattainable Fixed Points***by*Joshua M. Epstein & Ross A. Hammond**01-08-042 A Long-Term Perspective on Resilience in Socio-Natural Systems***by*Sander E. van der Leeuw & Chr. Aschan-Leygonie**01-08-041 A Model of Large-Scale Proteome Evolution***by*Ricard V. Solé & Romualdo Pastor-Satorras & Eric D. Smith & Thomas Kepler**01-08-040 Conserved RNA Secondary Structures in Picornaviridae Genomes***by*C. Witwer & S. Rauscher & I. L. Hofacker & P. F. Stadler**01-08-039 On the Impossibility of Predicting the Behavior of Rational Agents***by*Dean P. Foster & H. Peyton Young**01-08-038 Dynamics of a Simple Evolutionary Process***by*Dietrich Stauffer & M. E. J. Newman**01-07-037 Stabilization of Chaotic and Non-Permanent Food Web Dynamics***by*Richard J. Williams & Neo D. Martinez**01-07-035 Fast Approximation Algorithms for Finding Node-Independent Paths in Networks***by*Douglas R. White & M. E. J. Newman**01-06-034 Fractal Geometry of Spin-Glass Models***by*J. F. Fontanari & P. F. Stadler**01-06-033 Stochasticity in Transcriptional Regulation: Origins, Consequences and Mathematical Representations***by*Thomas B. Kepler & Timothy C. Elston**01-06-031 If You're So Smart, Why Aren't You Rich? Belief Selection in Complete and Incomplete Markets***by*Lawrence Blume & David Easley**01-05-030 A Simple Model of Epidemics with Pathogen Mutation***by*Michelle Girvan & Duncan S. Callaway & M. E. J. Newman & Steven H. Strogatz**01-05-029 The Topology of Technology Graphs: Small World Patterns in Electronic Circuits***by*Ramon Ferrer i Cancho & Christiaan Janssen & Ricard V. Solé**01-05-027 The Peacock, the Sparrow, and the Evolution of Human Language***by*Carl T. Bergstrom & Rustom Antia & Szabolcs Sz‡mad— & Michael Lachmann**01-05-026 Quantum Walks on the Hypercube***by*Cristopher Moore & Alexander Russell**01-05-025 Are Randomly Grown Graphs Really Random?***by*D. S. Callaway & J. E. Hopcroft & J. M. Kleinberg & M. E. J. Newman & S. H. Strogatz**01-05-024 Field Theory of a Reaction-Diffusion Model of Quasispecies Dynamics***by*Romualdo Pastor-Satorras & Ricard V. Solé**01-04-022 The Yeast Protein Interaction Network Evolves Rapidly and Contains Few Redundant Duplicate Genes***by*Andreas Wagner**01-03-021 Clustering and Preferential Attachment in Growing Networks***by*M. E. J. Newman**01-03-020 Synchronizing to the Environment: Information Theoretic Constraints on Agent Learning***by*James P. Crutchfield & David P. Feldman**01-03-019 Interfaces (and Regional Congruence?) in Spin Glasses***by*C. M. Newman & D. L. Stein**01-03-018 Stochastic Economies with Locally Interacting Agents***by*I. V. Evstigneev & M. I. Taksar**01-03-017 The Conservation of Homochirality and the Prebiotic Synthesis of Amino Acids***by*Harold J. Morowitz**01-03-016 The Small-World of Human Language***by*Ramon Ferrer i Cancho & Ricard V. Solé**01-03-014 Combinatorial Landscapes***by*Christian M. Reidys & Peter F. Stadler**01-03-013 Shaking a Box of Sand***by*Peter F. Stadler & Anita Mehta & Jean-Marc Luck**01-02-011 Recombination Spaces, Metrics, and Pretopologies***by*BŠrbel M. R. Stadler & Peter F. Stadler & Max Shpak & GŸnter P. Wagner**01-02-010 A Fast Monte Carlo Algorithm for Site or Bond Percolation***by*M. E. J. Newman & R. M. Ziff**01-02-009 Modeling Florentine Banking: Part I. Deposits and Loans***by*John F. Padgett**01-02-008 Modeling Florentine Republicanism***by*John F. Padgett**01-01-007 Cooperation, Reciprocity and Punishment in Fifteen Small-scale Societies***by*Joseph Henrich & Robert Boyd & Samuel Bowles & Colin Camerer & Ernst Fehr & Herbert Gintis & Richard McElreath**01-01-006 Landscapes on Spaces of Trees***by*Oliver Bastert & Dan Rockmore & Peter F. Stadler & Gottfried Tinhofer**01-01-005 The Inheritance of Economic Status: Education, Class, and Genetics***by*Samuel Bowles & Herbert Gintis**01-01-004 Incentive-Enhancing Preferences: Personality, Behavior and Earnings***by*Samuel Bowles & Herbert Gintis & Melissa Osborne**01-01-003 Social Capital and Community Governance***by*Samuel Bowles & Herbert Gintis**01-01-001 On the Evolution of Polygamy: A Theoretical Examination of the Polygamy Threshold Model***by*Susan Ptak & Michael Lachmann

### 2000

**00-12-066 Habit Fragmentation and Biodiversity Collapse Under Recruitment Limitation***by*Ricard V. Solé & David Alonso**00-11-060 Complexity and Fragility in Ecological Networks***by*Ricard V. Solé & José M. Montoya**00-10-058 Small Cycles in Small Worlds***by*Petra M. Gleiss & Peter F. Stadler & Andreas Wagner & David A. Fell**00-09-055 Normalization and analysis of DNA Microarray Data by Self-Consistency and Local Regression***by*Thomas B. Kepler & Lynn Crosby & Kevin T. Morgan**00-08-049 Structural Cohesion and Embeddedness: A Hierarchical Conception of Social Groups***by*James Moody & Douglas R. White**00-07-036 Hits and Flops Dynamics***by*Gérard Weisbuch & Dietrich Stauffer**00-06-032 Rectangles and Squares Recognized by Two-Dimensional Automata***by*Jarkko Kari & Cristopher Moore**00-05-027 Design of Multi-Stable RNA Molecules***by*Christophe Flamm & Ivo L. Hofacker & Sebastian Maurer-Stroh & Peter F. Stadler & Martin Zehl**00-04-026 Equation Satisfiability and Program Satisfiablity for Finite Monoids***by*David Bix Barrington & Pierre McKenzie & Cristopher Moore & Pascal Tesson & Denis ThŽrien**00-03-022 Learning to Be Thoughtless: Social Norms and Individual Computation***by*Joshua M. Epstein**00-02-011 Phase Transitions in Random Networks with Multiple States***by*Ricard V. Solé & Bartolo Luque & Stuart Kauffman**00-01-006 The Geometry of Shape Space: Application to Influenza***by*Alan Lapedes & Robert Farber**00-12-074 The Death of Costly Signalling?***by*Michael Lachmann & Carl T. Bergstrom & Szabolcs Számadó**00-12-073 The Co-evolution of Individual Behaviors and Social Institutions***by*Samuel Bowles & Astrid Hopfensitz**00-12-072 The Evolution of Reciprocal Preferences***by*Samuel Bowles & Herbert Gintis**00-12-071 Costly Signaling and Cooperation***by*Eric Alden Smith & Samuel Bowles & Herbert Gintis**00-12-070 The Topology of the Possible: Formal Spaces Underlying Patterns of Evolutionary Change***by*BŠrbel M. R. Stadler & Peter F. Stadler & GŸnter P. Wagner & Walter Fontana**00-12-069 The Price Dynamics of Common Trading Strategies***by*J. Doyne Farmer & Shareen Joshi**00-12-068 Two Regimes in the Frequency of Words and the Origins of Complex Lexicons: Zipf's Law Revisited***by*Ramon Ferrer Cancho & Ricard V. Solé**00-12-067 Lessons from the Past: Biotic Recoveries from Mass Extinctions***by*Douglas H. Erwin**00-12-065 A mechanism for the Evolution of Altruism Among Non-kin: Positive Assortment Through Environmental Feedback***by*John W. Pepper & Barbara B. Smuts**00-12-064 Who is the Best Connected Scientist? A Study of Scientific Coauthorship Networks***by*M. E. J. Newman**00-12-063 Modelling Macroevolutionary Patterns: An Ecological Perspective***by*Ricard V. Solé**00-12-062 A Simple Model of Fads and Cascading Failures***by*Duncan J. Watts**00-11-061 Replication and Mutation on Neutral Networks: Updated Version 2000***by*Christian Reidys & Christian V. Forst & Peter Schuster**00-10-059 Small World Patterns in Food Webs***by*Jose M. Montoya & Ricard V. Solé**00-10-057 Complex Discrete Dynamics from Simple Continuous Population Models***by*Javier G. P. Gamarra & Ricard V. Solé**00-10-056 A Mean Field Stochastic Theory for Species-Rich Assembled Communities***by*Alan McKane & David Alonso & Ricard V. Solé**00-09-054 Spectral Statistics of Instantaneous Normal Modes in Liquids and Random Matrices***by*Boris Gutkin & Tim Hely & JŸrgen Jost**00-09-053 Spectral Statistics of Instantaneous Normal Modes in Liquids and Random Matrices***by*Srikanth Sastry & Nivedita Deo & Silvio Franz**00-09-052 Upper Bound on the Products of Particle Interactions in Cellular Automata***by*Wim Hordijk & Cosma Rohilla Shalizi & James P. Crutchfield**00-09-051 New Results on Alternating and Non-Deterministic Two-Dimensional Finite-State Automata***by*Jarkko Kari & Cristopher Moore**00-09-050 One-Dimensional Peg Solitaire, and Duotaire***by*Cristopher Moore & David Eppstein**00-08-047 Individual Interactions, Group Conflicts, and the Evolution of Preferences***by*Samuel Bowles**00-08-046 Landscapes, Gene Networks and Pattern Formation: on the Cambrian Explosion***by*R. V. Solé & I. Salazar & Jordi Garcia-Fernández**00-08-045 Theoretical Morphology: State of the Art***by*G. J. Eble**00-08-044 The Fossil Record of Insect Diversity and Disparity***by*C. C. Labandeira & G. J. Eble**00-08-043 Entropic Nonextensivity: A Possible Measure of Complexity***by*Constantino Tsallis**00-07-042 Random Graphs with Arbitrary Degree Distribution and Their Applications***by*M. E. J. Newman & S. H. Strogatz & D. J. Watts**00-07-041 The Small World Inside Large Metabolic Networks***by*Andreas Wagner & David Fell**00-07-040 Abstention in Dynamical Models of Spatial Voting***by*Baerbel M. R. Stadler**00-07-039 Effect of Interaction Topology and Activation Regime in Several Multi-Agent Systems***by*Robert L. Axtell**00-07-038 Organizational Genesis, Identity and Control: The Transformation of Banking in Renaissance Florence***by*John F. Padgett**00-07-037 The Structure of Scientific Collaboration Networks***by*M. E. J. Newman**00-07-035 Information Bottlenecks, Causal States, and Statistical Relevance Bases: How to Represent Relevant Information in Memoryless Transduction***by*Cosma Rohilla Shalizi & James P. Crutchfield**00-07-034 Relatedness in Trait Group Models of Social Evolution***by*John Pepper**00-07-033 Landscape Statistics of the Low Autocorrelated Binary String Problem***by*Fernando F. Feirreira & José F. Fontanari & Peter F. Stadler**00-06-031 Controlling Spatiotemporal Dynamics in Excitable Systems***by*Nita Parekh & Somdatta Sinha**00-06-030 Upper and Lower Bounds on Continuous-Time Computation***by*Manuel Campagnolo & Cristopher Moore**00-05-029 Spatial Competition and Price Formation***by*Kai Nagel & Martin Shubik & Maya Paczuski & Per Bak**00-05-028 Interactions-Based Models***by*William A. Brock & Steven N. Durlauf**00-04-025 Who Wins Domineering on Rectangular Boards?***by*Michael Lachmann & Cristopher Moore & Ivan Rapaport**00-04-024 Analogy-Making as a Complex Adaptive System***by*Melanie Mitchell**00-04-023 A Stochastic Overlapping Generations Economy with Inheritance***by*I. Karatzas & M. Shubik & W. Sudderth**00-03-021 The Theory of Money***by*Martin Shubik**00-03-020 Phase Transitions in a Model of Internet Traffic***by*Ricard V. Solé & Sergi Valverde**00-03-019 Hard Tiling Problems with Simple Tiles***by*Cristopher Moore & John Michael Robson**00-03-018 On the Source of Mutational Robustness in Genetic Networks of Yeast***by*Andreas Wagner**00-03-017 Optimal Parochialism: The Dynamics of Trust and Exclusion in Networks***by*Samuel Bowles & Herbert Gintis**00-02-016 Decoupled Evolution of Coding Region and mRNA Expression Patterns After Gene Duplication : Implications for the Neutralist-Selectionist Debate***by*Andreas Wagner**00-02-015 The Role of Population Size, Pleiotropy, and Fitness Effects of Mutations in the Evolution of Overlapping Gene Functions***by*Andreas Wagner**00-02-014 Inferring Life Style From Gene Expression Patterns***by*Andreas Wagner**00-02-013 Molecular Insights into Evolution of Phenotypes***by*Peter Schuster**00-02-012 The Dynamics of Iterated Transportation Simulations***by*Kai Nagel & Marcus Rickert & Patrice M. Simon & Martin Pieck**00-02-010 Centralization vs. Decentralization in a Multi-Unit Organization: A Computational Model of a Retail Chain as a Multi-Agent Adaptive System***by*Myong-Hun Chang & Joseph E. Harrington Jr.**00-02-009 Alarm Calls as Costly Signals of Anti-Predator Vigilance: The Watchful Babbler Game***by*Carl Bergstrom & Michael Lachmann**00-01-008 Pattern Discovery and Computational Mechanics***by*Cosma Rohilla Shalizi & James P. Crutchfield**00-01-007 Exact Solution of Site and Bond Percolation on Small-World Networks***by*Cristopher Moore & M. E. J. Newman**00-01-005 An Analog Characterization of the Subrecursive Functions***by*Manuel Lameiras Campagnolo & Cristopher Moore & José Félix Costa**00-01-004 Multiple Minimas In Glassy Random Matrix Models***by*Nivedita Deo**00-01-003 Autocatalysis, Information and Coding***by*Peter R. Wills**00-01-002 Epidemics and Percolation in Small-World Networks***by*Cristopher Moore & M. E. J. Newman**00-01-001 Life and Evolution in Computers***by*Melanie Mitchell

### 1999

**99-12-080 Small Worlds: The Structure of Social Networks***by*Mark Newman**99-12-079 Patterns of Extinction and Biodiversity in the Fossil Record***by*Ricard V. Solé & Mark Newman**99-12-077 Plasticity, Evolvability and Modularity in RNA***by*Lauren W. Ancel & Walter Fontana**99-12-076 Scaling and Zipf's Law in Ecological Size Spectra***by*Juan Camacho & Ricard V. Solé**99-10-073 Physicists Attempt to Scale the Ivory Towers of Finance***by*J. Doyne Farmer**99-10-072 Allometric Scaling of Production and Life History Variation in Vascular Plants***by*Brian J. Enquist & Geoffrey B. West & Eric L. Charnov & James H. Brown**99-10-070 Frontiers of the Mind in the 21st Century: Commentary on Psychology***by*Paula Tallal**99-10-069 Experimental Studies of Language Learning Impairment: From Research to Remediation***by*Paula Tallal**99-10-068 Fast Fourier Transform for Fitness Landscapes***by*Dan Rockmore & Peter Kostelec & Wim Hordijk & Peter F. Stadler**99-10-067 Bifurcations and Chaos in Ecology: Lynx Returns Revisited***by*Javier G. P. Gamarra & Ricard V. Solé**99-09-066 Mean-Field Solution of the Small-World Network Model***by*M. E. J. Newman & C. Moore & D. J. Watts**99-09-064 Equilibrium Prices in Bundle Auctions***by*Peter R. Wurman & Michael P. Wellman**99-09-063 Error Propagation in the Hypercycle***by*P. R. A. Campos & J. F. Fontanari & P. F. Stadler**99-09-062 Metastable States in High Order Short-Range Spin Glasses***by*Viviana M. de Oliveira & J. F. Fontanari & Peter F. Stadler**99-08-060 Scaling in a Multispecies Network Model Ecosystem***by*Ricard V. Solé & David Alonso & Alan McKane**99-08-059 When Honest Signals Must Be Costly***by*Michael Lachmann & Carl T. Bergstrom**99-08-058 Genetic Algorithms in Resource Economic Models***by*Sylvie Geisendorf**99-08-057 I Can't Think With All This Noise: Inferring Strategies Using Symbolic Regression***by*Jim Warnick**99-08-056 Assortative Interactions and Endogenous Stratification***by*Susan Lee**99-07-055 Cumulant Dynamics in a Finite Population: Linkage Equilibrium Theory***by*Magnus Rattray & Jonathan L. Shapiro**99-07-054 The Physical Limits of Communication***by*Michael Lachmann & M. E. J. Newman & Cristopher Moore**99-07-052 Using Adaptive Agent-Based Simulation Models to Assist Planners in Policy Development: The Case of Rent Control***by*Robert N. Bernard**99-07-051 Landscape Outcomes in a Model of Edge Effect Externalities: A Computational Economics Approach***by*Dawn C. Parker**99-07-050 Regional Mobility and Geography***by*Diego Comín**99-07-049 Efficiency and Equilibrium in Task Allocation Economics with Hierarchical Dependencies***by*William E. Walsh & Michael P. Wellman**99-07-048 Strategic Cost and ‘Matching Pennies’***by*Justin Smith**99-07-047 The Fourth Dimension of Life: Fractal Geometry and Allometric Scaling of Organisms***by*Geoffrey B. West & James H. Brown & Brian J. Enquist**99-07-046 Interchangeability of Relevant Cycles in Graphs***by*Petra M. Gleiss & Josef Leydold & Peter F. Stadler**99-07-045 Resource Sharing and Coevolution in Evolving Cellular Automata***by*Justin Werfel & Melanie Mitchell & James P. Crutchfield**99-07-044 Computational Mechanics: Pattern and Prediction, Structure and Simplicity***by*Cosma Rohilla Shalizi & James P. Crutchfield**99-07-043 Iteration, Inequalities, and Differentiability in Analog Computers***by*Manuel Lameiras Campagnolo & Cristopher Moore & José Félix Costa**99-07-042 Relevant Cycles in Biopolymers and Random Graphs***by*Petra M. Gleiss & Peter F. Stadler**99-07-041 Metastable Evolutionary Dynamics: Crossing Fitness Barriers or Escaping via Neutral Paths?***by*Erik van Nimwegen & James P. Crutchfield**99-06-040 Comments on ``Simple Measure for Complexity''***by*James P. Crutchfield & David P. Feldman & Cosma Rohilla Shalizi**99-05-038 Inflationary Deficit Financing in an Open Economy: Evolutionary Dynamics***by*Jasmina Arifovic**99-05-037 Landscapes: A Natural Extension of Search Theory***by*Jose Lobo & William G. Macready

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