-
[show abstract]
[hide abstract]
ABSTRACT: We investigated labor productivity distribution by analyzing large-scale financial statement data consisting of listed and
unlisted Japanese firms to clarify the characteristics of the Japanese labor market. Both high and low productivity sides
of the labor productivity distribution follows the power-law distribution. Large inequality in the low productivity side was
observed only for the manufacturing sectors in Japan fiscal year (JFY) 1999 and observed for both the manufacturing and non-manufacturing
sectors in JFY 2002. The decline in the Japanese GDP in JFY 1999 and JFY 2002 were coincided with the large inequality in
the low productivity side of the distribution. A lower peak was found for all non-manufacturing sectors. This might be the
origin of the low productivity of the non-manufacturing sectors reported in recent economic studies.
PACS87.23.Ge Dynamics of social systems-89.75.Fb Structures and organization in complex systems
Physics of Condensed Matter 04/2012; 76(4):491-499. · 1.53 Impact Factor
-
[show abstract]
[hide abstract]
ABSTRACT: The sectoral synchronization observed for the Japanese business cycle in the
Indices of Industrial Production data is an example of synchronization. The
stability of this synchronization under a shock, e.g., fluctuation of supply or
demand, is a matter of interest in physics and economics. We consider an
economic system made up of industry sectors and goods markets in order to
analyze the sectoral synchronization observed for the Japanese business cycle.
A coupled oscillator model that exhibits synchronization is developed based on
the Kuramoto model with inertia by adding goods markets, and analytic solutions
of the stationary state and the coupling strength are obtained. We simulate the
effects on synchronization of a sectoral shock for systems with different price
elasticities and the coupling strengths. Synchronization is reproduced as an
equilibrium solution in a nearest neighbor graph. Analysis of the order
parameters shows that the synchronization is stable for a finite elasticity,
whereas the synchronization is broken and the oscillators behave like a giant
oscillator with a certain frequency additional to the common frequency for zero
elasticity.
10/2011;
-
[show abstract]
[hide abstract]
ABSTRACT: Labour productivity distribution (dispersion) is studied both theoretically and empirically. Superstatistics is presented as a natural theoretical framework for productivity. The demand index $\kappa$ is proposed within this framework as a new business index. Japanese productivity data covering small-to-medium to large firms from 1996 to 2006 is analyzed and the power-law for both firms and workers is established. The demand index $\kappa$ is evaluated in the manufacturing sector. A new discovery is reported for the nonmanufacturing (service) sector, which calls for expansion of the superstatistics framework to negative temperature range.
arXiv.org, Quantitative Finance Papers. 01/2009;
-
[show abstract]
[hide abstract]
ABSTRACT: We investigated labor productivity distribution by analyzing large-scale financial statement data consisting of listed and unlisted Japanese firms to clarify the characteristics of the Japanese labor market. Both high and low productivity sides of the labor productivity distribution follows the power-law distribution. Large inequality in the low productivity side was observed only for the manufacturing sectors in Japan fiscal year (JFY) 1999 and observed for both the manufacturing and non-manufacturing sectors in JFY 2002. The decline in the Japanese GDP in JFY 1999 and JFY 2002 were coincided with the large inequality in the low productivity side of the distribution. A lower peak was found for all non-manufacturing sectors. This might be the origin of the low productivity of the non-manufacturing sectors reported in recent economic studies.
http://dx.doi.org/10.1140/epjb/e2009-00421-y.
