166
S. Kosai and E. Yamasue
TMR c =
c
x
M x S x
(11.9)
where, c = 1: 1st classification, 2: 2nd classification.
Finally, the overall specific TMR under the 1st classification is obtained in the
following equation.
Overall specific TMR c=1 =
TMR c=1
DMI c=1
(11.10)
Referring the work (Yamatomi 2008), the chronological change of ore grades is
assumed in this analysis.
11.2.3 Projection Analysis
Chronological material flow reflects the transit of economic growth, since GDP per
capita is a major driver for material input. Given that the reported correlation distinguishes specific country trade, the material input with the economic development
in Japan is analyzed in this paper. The data of GDP (the current US dollar) and
population in Japan in 1990–2013 is taken from The World Bank (The World Bank
2015), and DMI per capita as well as TMR per capita are computed. Then, as seen
in the work by Bringezu et al. (2003), the regression equation representing the relationship between the material input indicator and the economic development indicator is obtained by using various models. Following the by Bringezu et al. (2003),
the relationship between DMI per capita and GDP per capita is analyzed by using
quadratic model, while the relationship between TMR per capita and GDP per capita
is analyzed by using linear, quadratic, and cubic models. This regression equation
is used to indicate the potential rage of TMR in the projection analysis. The historical trend of material input in the course of economic development will be extended
for the determination of EW-DMI and EW-TMR in 2020 and 2030. The forecasted
population and GDP in Japan are taken from the Institute of Energy Economics,
Japan (2015). It must be noted that this projection analysis will be conducted based
on the assumption that the economic structure will follow the historical trend.
11.3 Results and Discussion
11.3.1 DMI and TMR in Japan in 1990–2013
The weight on both DMI and TMR basis under 1st classification in Japan in 1990–
2013 is presented in Fig. 11.1. Material input on the DMI basis in Japan has constantly
S. Kosai and E. Yamasue
TMR c =
c
x
M x S x
(11.9)
where, c = 1: 1st classification, 2: 2nd classification.
Finally, the overall specific TMR under the 1st classification is obtained in the
following equation.
Overall specific TMR c=1 =
TMR c=1
DMI c=1
(11.10)
Referring the work (Yamatomi 2008), the chronological change of ore grades is
assumed in this analysis.
11.2.3 Projection Analysis
Chronological material flow reflects the transit of economic growth, since GDP per
capita is a major driver for material input. Given that the reported correlation distinguishes specific country trade, the material input with the economic development
in Japan is analyzed in this paper. The data of GDP (the current US dollar) and
population in Japan in 1990–2013 is taken from The World Bank (The World Bank
2015), and DMI per capita as well as TMR per capita are computed. Then, as seen
in the work by Bringezu et al. (2003), the regression equation representing the relationship between the material input indicator and the economic development indicator is obtained by using various models. Following the by Bringezu et al. (2003),
the relationship between DMI per capita and GDP per capita is analyzed by using
quadratic model, while the relationship between TMR per capita and GDP per capita
is analyzed by using linear, quadratic, and cubic models. This regression equation
is used to indicate the potential rage of TMR in the projection analysis. The historical trend of material input in the course of economic development will be extended
for the determination of EW-DMI and EW-TMR in 2020 and 2030. The forecasted
population and GDP in Japan are taken from the Institute of Energy Economics,
Japan (2015). It must be noted that this projection analysis will be conducted based
on the assumption that the economic structure will follow the historical trend.
11.3 Results and Discussion
11.3.1 DMI and TMR in Japan in 1990–2013
The weight on both DMI and TMR basis under 1st classification in Japan in 1990–
2013 is presented in Fig. 11.1. Material input on the DMI basis in Japan has constantly