Yoko Konishi

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This paper presents a microeconomic model of interregional freight transportation based on careful formulation of the cost structure in trucking firms and market equilibrium, which takes into account the feature of transport service as a bundle of multiple characteristics. We estimate the parameters of the model using the micro-data of interregional freight(More)
Despite the obstacles caused by the data constraints and diversity of industrial structure, analysis of the service sector is growing in importance. Focusing on one service industry in particular—freight transportation—a research team led by Senior Fellow Yoko Konishi set about analyzing the time cost as well as the monetary cost—cost of gasoline,(More)
Headquarters play an important role in modern companies, but the downsizing of headquarters is often advocated as a way to improve organizational efficiency. The size of headquarters is closely related to the centralization/decentralization of decision making, and a theoretically optimal level of (de)centralization depends on various conditions. Using a(More)
  • Yoko Konishi, Nishiyama Rieti, Yoshihiko, Nishiyama Yoshihiko
  • 2013
The purpose of this paper is to decompose total factor productivity (TFP)-type quantity into supply/productivity, demand, and other shocks. We propose a method of decomposing these three kinds of shocks in the production function using the gap between the actual amount of production and the production capacity of each plant. We construct a model to describe(More)
  • Yoko Konishi, Nishiyama Rieti, Yoshihiko, Nishiyama Yoshihiko
  • 2013
Total factor productivity (TFP) is considered as a good measure of productivity. However, empirical TFP, often calculated from ordinary least squares (OLS) residuals from production function estimates, normally includes demand shocks as well as productivity shocks. The appropriate policy differs depending on which factor is the main cause. Konishi and(More)
  • Tomoya Mori, Tony E Rieti, Smith, Mori Tomoya, Tony E Smith, Gilles Duranton +6 others
  • 2012
Typical analyses of industrial agglomerations start with some aggregate measure of the " agglomeration degree " for each industry, and attempt to explain differences in these values across industries by regressing them on sets of industrial attributes. But this aggregation makes it difficult to capture the spatial aspects of individual agglomerations. In(More)
We report here two cases of vitiligo vulgaris successfully treated with the combination therapy of topical steroid and vitamin D3 compound and currently maintained by vitamin D3 analog without any adverse effects: skin atrophy, striae or telangiectasia on the exposed areas. The best-known mechanism of topical vitamin D3 analog is the enhancement of(More)
  • Xavier Gabaix, Rustam Ibragimov, Gary Chamberlain, Victor Chernozhukov, Graham El-Liott, Wolfgang Härdle +10 others
  • 2008
Massachusetts Institute of Technology for helpful comments and suggestions. ABSTRACT Despite the availability of more sophisticated methods, a popular way to estimate a Pareto exponent is still to run an OLS regression: log (Rank) = a − b log (Size), and take b as an estimate of the Pareto exponent. The reason for this popularity is arguably the simplicity(More)
In this study, we apply duration analysis to specify a model of customers' behavior regarding their visits to a hair salon and we then estimate their aggregated revisit rates / dates. We adopt the following approach: [1] assuming that there are differences among first time customers, regular and loyal customers with respect to the intensity function; [2](More)