１　Introduction
　1.1　Changes Under the IT Revolution,
　1.2　Productivity Paradox,
　1.3　Accumulation Paradox,
　1.4　Increasing Role of Cities under the Knowledge Economy,
　1.5　Face-to-Face Interaction Enhanced by IT,
　1.6　Implications to Cities, References
２　Communication Technology and Cities
　2.1　Introduction,
　2.2　Communication Technology,
　2.3　The Models,
　2.4　Empirical Evidence,
　2.5　Conclusion,
　Appendix　2A:　Derivation of Demand Function,
　Appendix　2B:　Data Summary,
　Appendix　2C: Density Index, References）
３　Telecommunications　and　Transportation
　3.1　Introduction,　3.2　The Model,
　3.3　The Data,
　3.4　Empirical Results,
　3.5　Conclusion,
　Appendix 3A: Data Summary,
　Appendix 3B:　FGLS Estimation of the　Two-way Random Effects Model, References
４　Deregulation and Productive Efficiency in the Telephone Industry
　4.1　Introduction,
　4.2　The Telephone Industry in Japan After the Liberalization,
　4.3　Analytical Framework,
　4.4　The Construction of Data,
　4.5　Empirical Results,
　4.6　Conclusion,
　Appendix　4A:　Data Summary, References）