CVClient

清水 大昌

シミズ ダイスケ  (Daisuke Shimizu)

基本情報

所属
学習院大学 経済学部 経済学科 経済学部 経済学科 教授
学位
博士(経済学)(東京大学大学院経済学研究科)

J-GLOBAL ID
201301029883317237
researchmap会員ID
7000005911

MISC

 26
  • Toshihiro Matsumura, Daisuke Shimizu
    BULLETIN OF ECONOMIC RESEARCH 67(1) 1-13 2015年1月  
    We investigate the flexible manufacturing system (FMS) by using the spatial price discrimination framework of Pal. The degree of flexibility when producing variants can be increased by increasing the investment or production cost and is endogenously determined. Our result is that private incentives for increasing flexibility are excessive from a social welfare perspective.
  • Takeshi Ebina, Daisuke Shimizu
    ANNALS OF REGIONAL SCIENCE 49(1) 117-133 2012年8月  
    We investigate in a spatial Cournot competition setting how much product research and development (R&D) investment firms make in order to differentiate their goods. The model features a location competition in the first stage, R&D competition in the second stage, and Cournot competition in the third stage. There are two differentiation methods in the model-spatial differentiation affecting the firm costs, and differentiation in the demand function affecting the demand levels. We find that comparing to the setting with no spatial connotation, the firms tend to invest less in product R&D. We also consider welfare implications. Although the firms employ maximum differentiation in equilibrium, there are cases in which welfare can be improved if the firms are to locate closer to each other.
  • Daisuke Shimizu
    Economics Bulletin Vol. 32(Issue 4) 2870-2875 2012年  
  • Takeshi Ebina, Toshihiro Matsumura, Daisuke Shimizu
    PAPERS IN REGIONAL SCIENCE 90(3) 613-628 2011年8月  
    We investigate equilibrium locations of a spatial Cournot competition model that includes both circular city and linear city models as special cases. We find that the equilibrium location is discontinuous with respect to parameter beta (beta = 0 implies circular and beta = 1 implies linear), and multiple equilibria appear for some range of beta. The location pattern becomes exactly the same as that of the linear city for a wide range of beta, while it exactly matches that of circular city only when beta = 0. This implies the property of the linear city holds for non-measure zero case, while circular city does not.
  • Toshihiro Matsumura, Daisuke Shimizu
    MANCHESTER SCHOOL 78(6) 609-625 2010年12月  
    We investigate a mixed economy where state-owned public enterprises compete against private firms. We examine sequential privatization of public enterprises, and find that under plausible assumptions one privatization increases the welfare gains of the subsequent privatizations. Thus, even if privatization does not improve welfare at the early stages, it can eventually lead to a point such that privatizations after that point are beneficial to the society and the privatization program ends up with a success.

所属学協会

 1

共同研究・競争的資金等の研究課題

 4