Total and Productivity of Information and Communication Industries--An International Comparison

1980年代初，日本政府采取了开放电信市场竞争的自由化政策，并将日本主要的国内电信服务提供商日本电报电话公司（NTT）私有化。本文的目的是评估这些自由化措施对NTT生产绩效的影响。为了评估自由化的生产后果，我们首先提供NTT的全要素生产率和部分要素生产率。然后通过全要素生产率（TFP）回归和基于总成本函数和可变成本函数的分析分解方法对全要素生产率（TFP）指标进行分解，将自由化的影响与规模、技术和产能利用率等其他因素分开。重点将放在确定竞争和私有化对全要素生产率（TFP）增长的影响。最好能从统计上确定SEPA ...更多信息 私有化和竞争对NTT生产率的影响;然而，目前还不可能。虽然有足够的数据可以分析日本电信政策向竞争性进入和NTT私有化的转变，但这些事件的共线性以及竞争和私有化的互补互动性质使我们无法在此时单独衡量每个事件的后果。NTT的全要素生产率平均每年增长3.2%。然而，在1982年决定采取自由化政策之后，全要素生产率的改善速度明显加快。1982- 1987年期间，NTT TFP年平均增长率为5.1%（即，例如，1958- 1982年期间为每年2.8%，1970- 1982年期间为每年1.9%，1977- 1982年期间为每年0.26%。将全要素生产率增长分解为不同的增长源表明，竞争和私有化是NTT生产率提高的主要来源。本研究拟将NTT的全要素生产率与美国电信业者的全要素生产率进行比较。美国，联合K、加拿大、德国和法国。少

In the early 1980s, the Japanese government adopted policies of liberalization that opened the telecommunication market to competition and moved toward the privatization of Nippon Telegraph and Telephone (NTT), Japan's dominant domestic telecommunication service provider. The purpose of this paper is to assess the effects of these liberalization measures on the productive performance of NTT. To assess the productive consequences of liberalization, we first provide Total and Partial Factor Productivity measures for NTT. The Total Factor Productivity (TFP) measures are then decomposed through TFP regression and both total and variable cost functionbased analytical decomposition methods to separate out the effects of liberalization from other factors such as scale, technology, and capacity utilization. An emphasis will be placed on identifying the effect of competition and privatization on the Total Factor Productivity (TFP) growth. It would be desirable to identify statistically the sepa … More rate effects of privatization and competition on NTT's productivity ; however this is not currently possible. While there are sufficient data to permit an analysis of the shift in Japanese telecommunication policy towards competitive entry and privatization of NTT, the collinearity of the events and the complementary interactive nature of competition and privatization preclude our being able at this time to measure the consequence of each event individually.During the 1958-87 period, NTT's TFP level increased at an average annual rate of 3.2%. However, TFP improved at a significantly faster rate following the 1982 decision to adopt policies of liberalization. The average annual NTT TFP growth rate was 5.1% for the 1982-87 period (i. e., post liberalization) as compared to 2.8% per year for the 1958-82 period, 1.9% per year for 1970-82 period, and 0.26% per year for the 1977-82 period. The decomposition of TFP growth into sources indicates that competition and privatization were a major source of productive improvement for NTT. It is planned to perform a comparison of the total factor productivity of NTT with that of telecommunications providers in U. S., U. K, Canada, Germany, and France. Less