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R&D Subsidy in the Case of Open Domestic Intermediate Input Market … 29

Chapter 3 The Model

3.4 R&D Subsidy in the Case of Open Domestic Intermediate Input Market … 29

<

SWAR δ ∂xAR*/∂δ <0

3.4 R&D Subsidy in the Case of Open Domestic Intermediate Input Market

Assume that the government open the domestic intermediate input market, the domestic intermediate input manufacture devotes its effort on efficiency R&D employing the subsidy granted from and engage in Cournot competition

G

with its foreign competitor . The rest settings are the same as section 3.2. The three-stage game is depicted as Fig. 3.4.

ORF

F

I

At Stage 3, the monopoly final products manufacture decides optimal quantity and price of final products. The setting of Stage 3 is the same as section 3.2. At Stage 2, the domestic and foreign intermediate input manufacturers engage in Cournot competition to decide optimal quantity and price of secondary input

Stage 1

time 

G  decides  δ ,  τ   and  f , considering social  welfare effect 

Fig. 3.4 The three‐stage game of R&D subsidy on domestic Intermediate input 

Stage 2 Stage 3 

ORD

FI   and  FIORF  engage in  Cournot competition to decide  optimal profits under  s   and 

τ while  s   can only be used in  efficiency R&D 

OR

FF   decides optimal profit  under  δ ,  τ   and  f    

The demand function of intermediate input is

ORF I ORD I OR I OR I OR

I

a f Q Q q q

w

= − −2

δ

,       = + (35) Assume that adopts balance budget policy and transfers the entire ARFs to the domestic intermediate input manufacturer as a subsidy of R&D expenses. The objective functions of and are:

G

ORD

F

I

F

IORF

OR I ORD OR

I OR OR

I ORD

I x f Q

q x

w

ε γ δ

π

= − + − +

) 2 (

2

(36)

ORF I OR I ORF

I (

w τ

)

q

π

= − (37) Solve Eqs. (36) and (37) simultaneously, obtained

30

2

Eq. (40) shows that an increasing of

τ

will boost the level of optimal R&D performance, while the increasing of

f

,

ε

, δ and

γ

will result in reverse

32

Eq. (41) states that I can raise its profit by efficiency improvement. From Eqs. (28) and (41), Proposition 3 is concluded as:

F

ORD

Proposition 3: Domestic secondary intermediate input manufacturer may enlarge its profit by engaging in efficiency improvement R&D in both autarky and open market regime.

Compare Proposition 1 and Proposition 3, the two descriptions are almost the same. Yet, Proposition 1 focuses on the domestic secondary intermediate input manufacturer’s willingness to reduce production cost; while Proposition 3 highlights that manufacturer’s ex post efficiency improvement R&D results.

Under the condition of , the optimal price and quantity of final products and profit of are presented as

*

At Stage 1, the social welfare of domestic country under the open domestic intermediate input market regime with R&D is denoted as

* 2

Comparative static analyses of social welfare with respect to

f

, δ ,

τ

,

ε

and

γ

Observe Eqs. (44)~(48), if the disposal material disutility is large enough,

>>3

μ , it is easy to notice that , , ,

and . Those results indicate that the increasing of ARFs ( ), the efficiency difference of domestic intermediate input manufacturer (

0

and R&D effort (γ) will increase the social welfare. While the increasing of tariff rate of imported intermediate input (

τ

), and the percentage of using intermediate input (δ ), will decrease the social welfare.

From the discussion on the effect of governmental disposal material policies on social welfare when the domestic secondary intermediate input manufacturer engages in process efficiency improvement R&D in both autarky and open market regime, the conclusion is summarized as Proposition 4.

Proposition 4: If the disposal material disutility is large enough and the domestic secondary intermediate input manufacturer engages in process efficiency improvement R&D, the effect of governmental disposal material policies on social welfare are:

(1) The higher ARFs the government collects, the higher the social welfare would be in both autarky and open market regime;

(2) The lower percentage of using secondary intermediate input the government regulates, the higher the social welfare would be in both autarky and open market regime;

(3) The more efficient the domestic secondary intermediate input manufacturer is, the less the social welfare would be in both autarky and open market regime;

34

(4) In open market regime, the lower tariff the government levies on foreign secondary intermediate input importer, the higher the social welfare would be;

(5) If the domestic secondary intermediate input manufacturer has to devote more effort on R&D, the higher the social welfare would be in both autarky and open market regime.

Observe Proposition 3 and Proposition 4 (3), the paradoxical behavior on efficiency attention between the government and the domestic secondary intermediate input manufacturer is still existed in both autarky and open market with R&D regime.

Compare Proposition 2 and Proposition 4, it can be seen that the social welfare effects of governmental recycling policies, including ARFs ( ) and the percentage of using intermediate input (

f

δ ), are the same in both autarky and open market with R&D regime. In addition, the social welfare effects of domestic secondary intermediate input manufacturer’s behaviors are also the same, including the efficiency improvement (

c

IAR or

ε

) and the effort devoted in R&D (

γ

) in both autarky and open market with R&D regime.

There are two other findings deserved to be mentioned. First, the social welfare effect of δ is negative in all regimes except in autarky regime (i.e., ,

, , and ). The reason is when the

government regulates higher percentage of using intermediate input will effectively reduce the quantity of final products, and then reduce the amount of disposal materials in the autarky regime. But this effect is diluted by R&D effort and open market policy.

Second, the social welfare effect of

* 0

>

SWA / δ 0

*/

<

SWO δ ∂SWAR*/∂δ <0 ∂SWOR*/∂δ <0

τ

is positive (negative) in the open market (open market with R&D) regime (i.e., , ). The rationale is, in the open market regime, a higher tariff will lessen the quantity of foreign secondary intermediate input and increase the social welfare. While the domestic secondary intermediate input manufacturer engages in cost reduction R&D, a lower tariff will trigger fierce competition between domestic and foreign secondary intermediate input manufacturers and results in social welfare decline.

0

*/

>

SWO τ ∂SWOR*/∂τ <0

35

36

Chapter 4 Conclusion

Environment protection is a critical issue attracting many policy makers’

attention. For protecting the environment from being destroyed, governments and manufacturers have started to make efforts on recycling and effectively use resources in order to reduce their impact on the environment.

For implementing recycling and reducing waste effectively, the government plays a significant role in involving the green supply chain management. Under the consideration of social welfare, the government may encourage final product manufacturers to adopt more secondary intermediate inputs, and set up a feasible incentive mechanism for domestic intermediate input manufacturers to improve their efficiency are important issues.

This paper discusses four scenarios under the consideration of social welfare effects. At first, we discuss the case of autarky, and then discuss the case that the government opens the domestic intermediate input market to foreign intermediate input manufacturers. Finally, governmental R&D subsidy would be included in both above cases.

In both autarky and open market regime, we find that domestic secondary intermediate input manufacturer has the willingness to enlarge its profit by efficiency improvement. If the disposal material disutility is large enough, the effect of governmental disposal material policies on social welfare are: (1) The higher ARFs the government collects, the higher the social welfare would be in both autarky and open market regime; (2) The higher (lower) percentage of using secondary intermediate input the government regulates, the higher the social welfare would be in

37

autarky (open market) regime; (3) The more efficient the domestic secondary intermediate input manufacturer is, the less the social welfare would be in both autarky and open market regime; (4) In open market regime, the higher tariff the government levies on foreign secondary intermediate input importer, the higher the social welfare would be.

If the domestic secondary intermediate input manufacturer engages in efficiency improvement R&D, its profit would be enlarged in both autarky and open market regime with R&D. In addition, if the disposal material disutility is large enough and the domestic secondary intermediate input manufacturer engages in process efficiency improvement R&D, the effect of governmental disposal material policies on social welfare are: (1) The higher ARFs the government collects, the higher the social welfare would be in both autarky and open market regime; (2) The lower percentage of using secondary intermediate input the government regulates, the higher the social welfare would be in both autarky and open market regime; (3) The more efficient the domestic secondary intermediate input manufacturer is, the less the social welfare would be in both autarky and open market regime; (4) In open market regime, the lower tariff the government levies on foreign secondary intermediate input importer, the higher the social welfare would be; (5) If the domestic secondary intermediate input manufacturer has to devote more effort on R&D, the higher the social welfare would be in both autarky and open market regime.

We discover that the domestic secondary intermediate input manufacturer not only has the ex-ante willingness to reduce production cost but also can create ex post efficiency improvement R&D performance. But there exists the paradoxical behavior on efficiency attention between the government and the domestic secondary intermediate input manufacturer. The domestic secondary intermediate input manufacturer will dedicate to pursue efficiency improvement for raising its own profit while the government is on the opposite side for the consideration of social welfare.

There are two other findings deserved to be mentioned. First, the social welfare effect of the percentage of using secondary intermediate input is negative in all

38

regimes except in autarky regime. Second, the social welfare effect of tariff is positive (negative) in the open market (open market with R&D) regime.

39

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