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Cross Externality and Economic Growth Effect of Human Capital Accumulation and Technical Progress

Cross Externality and Economic Growth Effect of Human Capital Accumulation and Technical Progress
Cross Externality and Economic Growth Effect of Human Capital Accumulation and Technical Progress

Cross Externality and Economic Growth Effect of Human

Capital Accumulation and Techn Technologi ologi ological

cal Progress Abstract :Technological progress and human capital accumulation are both the driving forces of endogenous and sustainable economic growth for a country.This paper develops a theoretical model which endogenizes technology change and human capital accumulation in the mean time,and analyz e s how human capital accumulation and R&D investment provide incentives for each other as well as how they affect economic growth .This paper draws a conclusion that there is a cross positive externality between technology and human capital,which would increase economic growth greatly.

JEL Classification :O14;O15;O31;O41

Keywords :Economic growth;Technological Progress;Human capital Accumulation

1.Introduction

Endogenous economic theory shows the internal mechanism of long-run economic growth.Human capital and technology can play a major role in economic growth.Technological human capital externalities were emphasiz ed in Jacobs (1965),Lucas (1988),Azariadis and Draz en (1990),while pecuniary human capital externalities were discussed by Marshall (1961),Acemoglu (1996,1997a).The first endogenous technological change models were formulated by Romer (1987and 1990).Different versions have been analyz ed by Segerstrom,Anant and Dinopoulos (1990),Grossman and Helpman (1991a,b),Aghion and Howitt (1992),Gancia and Zilibotti (2005)provide an excellent survey of many of endogenous technological change models.

Researchers have studied the convergence properties of the decentraliz ed equilibrium in a similar model.Arnold (1998,2000)and Funke and Strulik (2000)have studied the convergence properties of the decentraliz ed equilibrium in a growth model with endogenous innovation and accumulation of human capital that integrates the Uzawa-Lucas education sector (see Uzawa 1965and Lucas 1988)and the Jones R&D technology into the Grossman-Helpman model of growth through R&D (see Grossman andHelpman 1991,ch.3).Boonprakaikawen and Tournemaine (2006)developed a R&D-based growth model with endogenous accumulation of human capital to examine how the decisions of individuals to invest in human capital can be altered by changes in economic policies and how they can be reflected on the long-run level of growth.

On the basis of current research,this paper combines the insights of Romer (1990)and Lucas (1988),and develops a growth model by endogenizing human capital in the Romer model,which can be regarded as the straightforward synthesis of the human-capital formation and R&D approaches to economic growth.On the one hand,human capital is a main factor in technological progress and economic growth.The key role of human capital is facilitating adoption and implementation of new technologies.In Romer’s setting,innovations are driven by human capital investment.On the other hand,human capital accumulation is the means by which skills are improved for the benefit of any type of productive activity,including R&D,that is to say,technological progress would increase the accumulation of human capital.In this paper,we seek to study the equidirectional promoter action,i.e.,the cross positive externality between human capital and R&D in economic growth.We will develop a model where growth is driven by both

R&D-based technological progress and endogenous human capital accumulation.

The solution of the model is a dynamic,competitive equilibrium displaying transitional adjustment towards a unique steady state at which the economy grows at a constant,endogenous rate.The key aspect about this steady state growth rate is that it is determined by the parameters describing preferences and human capital accumulation and technological progress.Thus we draw a conclusion that human capital accumulation and R&D investment provide incentives for each other and they increase economic growth together .

The paper is organiz ed as follows.Section 2lays out the theoretical framework.Section 3describes the equilibrium and the optimal path.Section 4concludes by mentioning extensions and limitations.

2.The model

Our model is basically the Grossman and Helpman model (see Grossman and Helpman 1991)with endogenous human-capital accumulation.In particular,we adopt all assumptions made in Grossman and Helpman (1991)with the following two important exceptions.First,following Uzawa (1965)and Lucas (1988),the size of the labor force is the result of individuals’decisions to invest in human capital rather than exogenously determined.Second,we have to accommodate the R&D technology in order to avoid the growth rates increasing implausibly exponentially when human capital grows perpetually.

2.1.Technologies

Production of the homogenous final good Y requires human capital,labor and an index of intermediates.The production function of final good is represented by

,(1)

10()N Y Y Y H l x i di αβαβ??=∫0,,1αβαβ<+

(2)

()()x i y i =Where is the final good devoted into the intermediate goods production.The final good,Y ,()y i is used for consumption,C ,and investment.To be simple,we neglect depreciation of physical capital,which leads to the economy’s resource constraint,

(3)

Y K C ?

=+Production of a new intermediate good requires the invention of a new blueprint.Following Jones (1995)we set a technology accumulation function with state dependent of knowledge which implies that the production of new ideas is determined by the stock of disembodied knowledge N and by human capital investment in R&D:

(4)

N N N H N φ

η?=

Where measures the spillovers on R&D.is an efficiency parameter.01φ<<0N η>is the human capital in R&D.is the proportion of human capital devoted (1)N H H μ=?(1)μ?to R&D sector.

We also set a human capital accumulation function with state dependent of human capital which implies that the accumulation of human capital is determined by the stock of disembodied human capital H and part of labor time spent on development of skills.This human capital accumulation function is similar to production function of the Uzawa (1965)and Lucas (1988)type:

(5)

H H H l H η?

=Where is an efficiency parameter.is the proportion of labor devoted to 0H η>(1)H Y l l =?human capital accumulation.

2.2.Households

We assume the economy is composed of an infinitely lived representative household who consume final good,and the preferences are represented by (6)

∫∞

????=0111)(dt e C C U t ρσσWhere is the rate of time preferences,is the reciprocal of the intertemporal 0>ρ0>σelasticity of substitutio n.In our model human capital is a capacity of an individual,which is invested when labor is devoted.Human capital and labor are two different factors owned by an individual.Individuals earn wages,,per unit of employed labor and the reward for labor,

Y l w l ,per unit of employed human capital .They also earn returns,r ,per unit of aggregate

Y H w Y H wealth,A ,which leads to the budget constraint .The resolution of Y Y l Y H Y A

rA w l w H C =++??the intertemporal optimization program of consumers leads to the so-called Keynes–Ramsey condition,which then gives the following equilibrium relation between the economic growth rate and the interest rate r:(7)

C r C ρσ?

?=The total amount of labor is normalized to one and the total human capital stock is H .Labor and human capital is supplied inelastically,therefore,full employment requires

(8)Y N

H H H =+(9)

1

Y H l l +=2.3.Firms and markets The market for final goods is perfectly competitive and the price of final goods is normalized to one,which implies that:(10)

Y l Y w Y l β=(11)

Y H Y w Y H α=(12)()(1)()

x Y Y P i H l x i αβαβαβ??=??

Where denotes the price of an intermediate good i .Each firm in the R&D sector owns an ()x P i infinite patent for selling its variety .Producers act under monopolistic competition and ()x i maximiz e operating profits

(13)

()[()1]()x x i P i x i π=?Where 1is the unit cost of Y.Profit maximization in this sector implies that each firm charges a price of (14)

()1(1)x x P P i αβ==??With identical technologies and symmetric demand,the quantity supplied is the same for all goods,.Set K the physical capital stock.In a symmetric equilibrium,we obtain .()x i x =K Nx =From equations (12)and (14),we obtain

(15)

2(1)K Y

αβ=??After insertion of equations (14)and (15)into (13),profits can be rewritten as:(16)

()(1)x Y N παβαβ=+??With regard to the maximization of a monopolist who owns the patent of a machine at time t ,we denote as the value of a monopolist,and as the instantaneous value of a monopolist ()V t ()v τat an instant ,where .As the market for patents is competitive,at every instant the τt τ≥instantaneous net revenue of a monopolist must be equal to the profits of a intermediate capital producer,i.e.,at every instant the condition must be satisfied.Thus the τ()()x v τπτ=equilibrium condition of the market for patents lies in the price for patents will be bid up until it is equal to the present value of the net revenue that a monopolist can extract.The equilibrium condition for patent market is

(21)

()0()()t r s ds V t v e d τττ∞

?∫=∫Where is the market interest rate at an instant .At every instant,The z ero profit ()r ττcondition for R&D sector is that the instantaneous payment of the human capital in R&D equals to the marginal product of human capital at every instant ,thus the instantaneous equilibrium τcondition for R&D sector is

(22)()()()

N H N w N v φτηττ=Where,is the instantaneous payment of human capital in R&D at an instant .Then free

()N H w ττentry into R&D at every instant requires if ()(23)

()()()N H N w N v φτηττ=()0N τ?>()0N H τ>if ()(24)()()()N H N w N v φτηττ>()0N τ?

=()0N H τ>No-arbitrage for investors at time t requires the interest rate equals to the dividend rate plus the rate of capital gain :

()()x t V t π()()V t V t i (25)

()()()()()x V t r t t V t V t π=?i Market clearing of R&D sector at time t requires individuals bid up a price of human capital which equals to the present value of the instantaneous payment .The market clearing

()N H w τ

condition for R&D sector is

(26)

()()()()()N N r t H H N t t W t w d N v e d φτττητττ∞∞??==∫∫Where,is the price of human capital in R&D at time t .Noticing the growth rate of

()N H W t equals to .Differentiating equation (26)with respect to time t ,we ()N H w t ()H N g g ααβφ++obtain (28)

()()()N N x H H N N t t W t r g g φηπαφαβ=??????+??Consider the profits maximization problem of human capital accumulation sector.The instantaneous equilibrium condition of human capital accumulation sector is that at every instant the instantaneous payment of labor must be equal to the total revenue of the production of new τhuman capital:(29)

1()()()1H l H H w H W φτηττδφ?=+?Where,is the instantaneous payment of labor devoted to human capital accumulation

()H l w τsector at an instant .In equation (29)the price of human capital is instead of the τ()H W τinstantaneous payment of human capital ,this is because that in human capital market a

()H l w τfinal good producer pays rewards of to employ one unit of human capital,and a R&D

()Y H W τfirm pays ,and in equilibrium both and are equal to the price of human

()N H W τ()Y H W τ()N H W τcapital in human capital sector,i.e.,.Thus firms are not concern about ()()()Y N H H H W W W τττ==the instantaneous payment of human capital when employing human capital.

Market clearing of human capital accumulation sector at time t requires individuals bid up a price of labor which equals to the present value of the instantaneous payment .Combining

()N l w τequation (28)and (29)we obtain (30)

()()()()()()()11H H

r t l l t r t H N x t H N W t w e d H N e d r g g τφτττηηττπτφτδφαφαβ∞??∞

??=?=+???????+??∫∫The growth rate of equals to .Differentiating equation (30)()H l w t )H N H g g g ααβφ+++with respect to time t ,we obtain (32)

()()()1()1H H N x l H N H N H H t N t t W t r g g r g g g φηηπφδφααφφαβαβ?=+??????????????++????As we completely describe the economy in the above section,we’re about to characteriz e the steady-state solution to the decentraliz ed equilibrium of this economy over the following section.

3.Decentraliz ed Equilibrium

From equations (15)we know that the capital-output ratio is a constant,which implies .From equations (4)we know that is a constant,which implies .Equation

K Y g g =C K K C g g =(5)implies that

(29)

(1)H N

g g φ=?Therefore we summariz e (30)

11Y K C H N H g g g g g g αααβαβφ??===+=+?++???Free flow of production factors implies that the price of factors in different sectors is equal,thus we have

(31)

Y N H H W W =(32)Y H

l l W W =Combining equation (11)and (25)with the human capital market clearing condition (31)we obtain (33)

N x H

N N Y H r g g φηπααμφαβ=??+Driving equation (1),(2),(15)and (17)into (33)we obtain (34)

(1)1(1)()1H H H

r g g g μαφαφμαβαβαβφ???=???????++???From equation (8)and (30)we know (35)

11H r g ασραβφ??=++?+???

Combining equation (34)and (35)we obtain (36)

(1)(1)1(1)()1H H g g μαφσασφρμαβαβαβφ???????=++???????++?????Equation (36)is one of the useful conditions to solve the steady-state economic growth rate which is derived from the free entry condition of human capital market.

Combine equation (10)and (28)with the labor market clearing condition (32),and notice that ,and then we obtain Y N

H H H W W W ==(37)

1(1)()H N Y H N H N H g l r g g r g g g ημαβαββααφφαβαβ???+=?????????????++?

???Combining equation (36)and (37)we obtain (38)

11111H Y H H

l r g g βμφηααδφαβφ?=+???+?From equation (5)we know (39)

1Y H H

l g η=?Driving equation (39)into (38)we obtain

(40)

(1)11H H

H g g ηαμβσασραβφ?=????++??+???Equation (40)is the other useful conditions to solve the steady-state economic growth rate which is derived from the free entry condition of labor market.From equation (36)we know that the distortion due to the monopoly of the intermediate capital goods in decentraliz ed equilibrium appears in equation (36)rather than equation (40).Thus only human capital market is affected by distortion,and the allocation of factors in human capital market would not be optimal,which makes that the economic growth rate in decentraliz ed equilibrium allocations would be lower than that in pareto optimal allocations.

Combining equation (36)and (40)we obtain the following quadratic equation (41)

()(1)(1)1(1)11(1)(1)()(1)1H H H H H H g g g g g σασφσασαφρραβφαβφασασφηαβαβαφρβαβφ?????????????++++???????+?+?????????

????????=???++?++??????+?????????

Solve equation (41)and we can obtain the following proposition.

P ropo roposi si sition tion 1.The steady-state economic growth rate in a balanced growth path is (42)

[][][][]12211121H D H D D H D D g βρηηηαααβφ?????Φ+?Φ+Ψ?Θ+??????????=+??+?Θ+??Where ,,,(1)()D αβαβα??+Λ=(1)1H σασφαβφ????Γ=+??+???(1)11l σασαβφ????Γ=+??+???

,,.(1)()(1)((1))H l D D H βφραφραφ?Γ+Γ??Φ=Λ+?Γ(1)((1))H l D D H βφαφ?ΓΓΘ=Λ+?Γ4(1)(1)D D H

φρφ?Ψ=Λ+?ΓFrom the comparative static of equation (42)we know that the equilibrium growth rates of consumption and production increase with the productivity in human capital accumulation and H ηthe spillover parameter ,and decrease with the monopolistic markup .These φ1(1)αβ??properties are in accord with the classic analysis in Romer (1990).Thus we obtain the following results.

P ropo roposi si sition

tion 2.There is a positive cross externality between technological progress and human capital accumulation,which increases economic growth greatly.

Human capital investment would affect economy growth in two important ways.Firstly,human capital can improve labor quality by education investment,and improve labor skill by on-the-job training,which would increase outputs directly and the rate of physical capital accumulation.Secondly,human capital can raise domestic R&D level,which can increase the rate of technology innovation and economic growth rate.Thus the efficiency parameter of human capital accumulation has a positive effect on economic growth rate.The higher is,the higher the H δaccumulation of human capital would be,which implies a higher stock and quality of human capital and a higher steady-state economic growth rate.

R&D of new technology would increase technology stock,and increase the output of final good

production with the expanding variety of intermediate goods.Equation (6)implies a technology accumulation function with knowledge-based and state dependent of knowledge specification of the innovation possibilities frontier.The knowledge-drive specification and state dependence imply that intertemporal externalities occur in the R&D activity,which means that people engaged in the research activity can take advantage of technology accumulated in the past.Thus the growth rate of technology and the steady-state economic growth rate would be positively related to the efficiency parameter of the spillover on R&D.

The Jones R&D technology implies that human capital investment would increase the production of new ideas.Equation (26)implies that the equilibrium growth rate of technology is positively related to the productivity parameter of human capital accumulation sector.Thus,not only the productivity parameter of human capital accumulation sector,but also human capital stock has a positive effect on the growth rate of technology.Equation (10)shows that in BGP the growth rate of human capital must be times as the growth rate of technology.An increase (1)φ?in the rate of human capital accumulation would increase the human capital stock and the absolute investment of human capital in final good production and R&D process.While the human capital accumulation rate is higher than the technological progress rate here,and the economy diverges from the BGP and steady-state economic growth can’t be sustainable.In order to keep the condition to be met and let the economy return back to the steady-state again,(1)H A g g φ=?technological progress must be increased appropriately,which requires the relative investment of human capital in R&D to be increased.This implies that there is a positive externality of human capital accumulation on technological progress and economic growth.

An increase in technological progress implies an increase in human capital devoted into R&D with a fixed spillover .As a skill or capacity of an individual,human capital is invested when φlabor is devoted,so individuals must adjust the investment decisions of human capital and labor in the same direction.When individuals make decisions to increase the investment of human capital in R&D and decrease the human capital in final good production,they would also make decisions to change labor input in the same direction,i.e.,to increase the labor input in human capital accumulation sector and decrease the labor input in final good production.This would increase the rate of human capital accumulation and the human capital in R&D,and let the economy return back again to the steady-state where condition can be met.Thus we can see that (1)H A g g φ=?there is a positive externality of technological progress on human capital accumulation and economic growth.

Thus we can see that there is a relationship of interdependence and mutual promotion between technological progress and human capital accumulation.The faster technological progress is,the faster the accumulation of human capital would be,and the increase of human capital stock would increase technology growth rate.We can summariz e the relationship of mutual promotion as a cross externality.That is to say,the positive externality between human capital and technological progress would be intermesh,which generates an effect of mutual promotion,and increases economic growth greatly.

At last we determine the shares of H and l in each sector,which we later compare to the optimal solutions.From equation (34)we know that the decentraliz ed equilibrium (D )ratio of H of the final good sector to R&D sector is (43)

(1)(1)(1)11(1)()1(1)()D g μαφσασφαραφμαβαβαβφαβαβαβ??????????=+++?????????++???++??????

From equation (39)we know that the decentraliz ed equilibrium (D )ratio of l of the human capital accumulation sector is (44)

()11H D H g l αηαβφ=??+?+???4.Pareto Optimal Allocations

To contrast the equilibrium allocations with the Pareto optimal allocations,we now access the optimality of growth rates and allocations of human capital across sectors in the economy.We set up the problem of the social planner and derive the optimal growth rate.Notice that the social planner would correct the distortion in the economy who would not charge a markup on machines and correct the distortion caused by monopoly in the intermediate capital goods sector.

The social planner maximizes intertemporal utility given by (6),subject to ,where Y K Y C ?

=?is given by (1),the R&D technology,(4),and the human capital accumulation technology,(5).Define the current-value Hamiltonian:(45)111231()(1)(1)1N H C H l N K C HN l H σαβαβαβφλμλημλησ

?+?????=+?+?+????H Where,,and are control variables,,and are state variables.Solve this problem and C μl K N H we can obtain the following proposition.

P ropo roposi si sition

tion 3.The optimal economic growth rate is (46)1

22*()()(1)112(1)H P H P P H P P g βρηηηαααβφ?????Φ+?Φ+Ψ?Θ+??????????=+??+?Θ+??

Where ,,,P αβα+Λ=(1)()(1)((1))H l P P H βφραφραφ?Γ+Γ??Φ=Λ+?Γ(1)((1))

H l P P H βφαφ?ΓΓΘ=Λ+?Γ.4(1)(1)P P H

φρφ?Ψ=Λ+?ΓProof :See the Appendix.

Where is the Pareto optimal growth rate.Intuitively,the Pareto optimal growth rate is greater *g than the equilibrium growth rate,the reason is that the monopolistic markup affects the free entry condition of human capital market in decentraliz ed equilibrium allocations rather than in pareto optimal allocations.This is because that a monopolist would gain higher revenue by the monopolistic markup over marginal cost of production of inputs,but the social planner would not charge a markup on machines.Thus the social planner corrects this distortion and makes the allocation of human capital optimal.

Arnold (1998),Funke and Strulik (2000)and Reis and Sequeira (2007)all obtain confused results that all growth rates in the decentraliz ed equilibrium of the economy are optimal.It is obviously that their results consist with neither their model setup nor the classical analysis in Romer (1990),Grossman and Helpman (1991).The monopoly of the intermediate capital goods sector is the main distortion in decentraliz ed economy,and the social planner eliminates this distortion which causes the socially optimal allocation of human capital to R&D sector to be higher,and the socially optimal rate of growth to be higher.So it is obviously wrong that economic

growth rates in the decentraliz ed equilibrium and in the Pareto optimal allocations are the same.We now determine the shares of H and l in each sector in the Pareto optimal allocations.From equation (50)we know that the Pareto optimal (P )ratio of H of the final good sector to R&D sector is (47)*(1)(1)(1)111()P g μαφσασφαραφμαβαβφαβαβ??????????=+++??????++?++??????

And the Pareto optimal (P )ratio of l of the human capital accumulation sector is (48)

*()11H P H g l αηαβφ=??+?+???Comparison between equation (40)and (47)implies that the equilibrium ratio of H of the final good sector to R&D sector is higher than the Pareto optimal ratio.They differ mainly due to the distortion we have discussed before.From the markup distortion we again tend to have a higher μthan optimal.The monopolist charges a markup and serves a lower amount of patents than the social planner,and then requires a lower proportion of human capital devoted into R&https://www.doczj.com/doc/0d6361084.html,paring equation (44)with (48),we can obtain that the equilibrium allocation of labor to the final good sector is higher than the Pareto optimal allocation.Their difference also reflects the markup distortion.Again,because the investment decisions of human capital and labor are in the same direction,the individuals increase the investment of human capital in final good production due to the markup distortion in decentraliz ed economy,and must increase the labor devoted into final good production at the same time.These are the microeconomic mechanism which makes the economic growth rates in the decentraliz ed equilibrium lower than the Pareto optimal allocations.

5.C onclusion

This paper combines the thoughts of Romer,P.M.and Lucas,R.E.,uses the division methods of production sectors and the thoughts of cross-sector effective allocation of production factors in Romer (1990),and integrates the processing methods of endogenous variable and control variable in Lucas (1988).The conclusion of the model can be summariz e d as follows.In an economic system which is driven by technological progress and human capital accumulation in the mean time,the economy gains greater promotion than the economic system which just has one driving factor.There is a cross positive externality between technological progress and human capital accumulation.Human capital accumulation and R&D investment provide incentives for each other and they increase economic growth together .

The Uzawa-Lucas approach may serve well to characteriz e ‘mechanics of development’if productivity in the knowledge accumulation sector is sufficiently high.The incentive to innovation produces long-run growth that surpasses growth through factor https://www.doczj.com/doc/0d6361084.html,ernment would increase R&D investment and education investment,give full play to the externality of human capital and technology progress in economic growth,and increase the internal driving forth of economic growth.

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Appendix.Proofs of Propositions

Proof (Proposition 3)

The problem of the social planner is to maximiz e the utility’s level of the representative household:

∫∞

????=0111C )(:max t d e C U t ρσσ

..s t K Y C

?

=?β

αβαβαμ??+=1)(K N l H Y (1)N N HN φ

ημ?

=?H

l H H )1(?=?ηDefine the current-value Hamiltonian:

111231()(1)(1)1N H C H l N K C HN l H σαβαβαβφλμλημλησ

?+?????=+?+?+????H Where,,and are control variables,,and are state variables.The first-order C μl K N H necessary conditions are (12)

10C C

σλ??=?=?H (13)1201Y N λαλμμμ

??=?=??H (14)

1301Y H l l l

λβλ??=?=??H (15)

2212()Y N N N N λλρλαβλφ??

??=?=?+??H (16)

33123Y N H H H H H λλρλαλλ?

????

=?=????H From (12)we obtain (17)11C C λσ

λ?

??=From (12)and (14)we obtain (18)

2311N l H l μλλμαβ??

=??Combining equation (13)and (15)we obtain (19)

222

21N N N N αβμλλρλλφαμ?

?

?+?=???From (13)we obtain (20)

2(1)(1)11N g g λαφσαβ?????=??++????+????Combining equation (19)and (20)we obtain

(21)

(1)(1)1N N g g ασφαβμσφραβαμ????++?+=??+???

Combining equation (14),(16)and (18)we obtain (22)

233

33111l H l H H l H l H H ααμλλρλλλββμ?

?????=?????From (14)we obtain (23)

3(1)(1)1(1)N g g λαφσφαβ?????=??++?????+????Combining equation (22)and (23)we obtain (24)

(1)1(1)1[(1)][(1)]N H N H N g g g αφααμσφρηφηφαβββμ???????+?+???=??????+???

?Combining equation (21)and (24)we obtain (25)

[(1)](1)(1)1[(1)](1)(1)H N N N H N N g g g g g αβηφασφαβσφρηφαββασφσφραβ+??????+??+???=??+??????+?+??+??Solve equation (20)and we can obtain the following proposition.

Equation (50)and (53)are the counterpoints of equation (33)and (37)in the decentraliz ed equilibrium,the differences between them are only the distortions eliminated by the social planner.

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soy sauce 酱油 ginger 生姜 scallion,青葱 green pepper 青椒 pea 豌豆 bamboo shoot 竹笋 seasoning 调味品 green soy bean 毛豆 soybean sprout 黄豆芽 mung bean sprout 绿豆芽 kale 甘蓝菜 broccoli 花椰菜 mater convolvulus 空心菜 dried lily flower 金针菜 mustard leaf 芥菜 tarragon 蒿菜 beetroot 甜菜根 lettuce 生菜 preserved szechuan pickle 榨菜salted vegetable 雪里红 lettuce 莴苣 asparagus 芦荟

dried bamboo shoot 笋干 water chestnut 荸荠 long crooked squash 菜瓜 gherkin 小黄瓜 yam 山芋 taro 芋头 champignon 香菇 dried mushroom 冬菇 white fungus 百木耳 garlic 大蒜 onion 洋葱 wheat gluten 面筋 miso 味噌 caviar 鱼子酱 barbeque sauce 沙茶酱 tomato ketchup, tomato sauce 番茄酱mustard 芥末 salt 盐 sugar 糖 sweet 甜 sour 酸 bitter 苦

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Hop-------------------- 忽布,啤酒花 Horseradish------------ 山葵,辣根 Laurel----------------- 月桂 Mint------------------- 薄荷 Mustard---------------- 芥末 Nutmeg----------------- 肉豆蔻 Oregano---------------- 牛至 Paprika---------------- 红辣椒粉 Parsley --------------- 欧芹,洋芫荽洋香菜Poppy seed ------------ 罂粟种子 Rosemary -------------- 迷迭香 Saffron --------------- 藏红花,番红花 Sage------------------- 鼠尾草,洋苏草 Tarragon--------------- 龙蒿,蛇蒿,菌陈蒿 T hyme ----------------- 百里香,麝香草 Turmeric -------------- 姜黄 vanilla --------------- 香草,香子兰 Wormwood -------------- 苦艾,蒿

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现代物流学试题一及答案

现代物流学试题一及答案 一、选择题(每题2分,共20分) 下列各题A、B、C、D四个选项中,只有一个选项是正确的,请将正确的选项涂写在答题卡相应位置上,答在试卷上不得分。 1.对象所有权转移的活动称为()。 A.商流 B.物流 C.信息流 D.流通辅助性活动 2.()是全社会物流的整体,也称为大物流或宏观物流。 A.国内物流 B.社会物流 C.行业物流 D.地区物流 3.下列选项中不属于装卸搬运合理化原则的是()。 A. 消除无效搬运 B.提高搬运活性 C. 尽量采用人工作业 D.采用集装单元化作业 4.下列不属于配送的特点的是()。 A.配送是从物流据点至用户的一种送货形式 B.配送是在全面配货的基础上,完全按用户要求进行的运送,是配与送的有机结合 C.配送是一种门到门的服务 D.配送一般是干线运输或直达运输,批量大、品种单一 5.在物流系统中,起着缓冲、调节和平衡作用的物流活动是()。 A.运输 B.配送 C.仓储 D.装卸 6.根据“物流成本冰山说”,露在水面之上的部分是()。 A.企业内部消耗的物流费 B.制造费用 C.委托的物流费用 D.自家物流费 7.第三方物流业者的核心能力体现在()。 A.专业服务 B.高效率 C.规模化 D.信息系统 8.集装箱容积一般是()。 A.大于10立方米 B.大于20立方米 C.大于40立方米 D.大于1立方米 9.资金流可以认为从属于()。

A.商流 B.物流 C.信息流 D.流通辅助性活动 10.在自动化仓库里的整体式仓库和分离式仓库,它们是()进行分类的。A.按仓库在生产和流通中的作用 B.按仓库的建筑形式 C.按库房高度 D.按库房容量 二、简答题(每题5分,共35分) 1. 什么是商物分离?商物分离的特征和优越性表现在哪些方面? 2.什么是物流系统?为什么物流具有系统性? 3. 物流成本管理的意义是什么? 4.什么是集合包装?商品集装化的作用有哪些? 5.根据我国流通企业类型,流通企业物流分为哪几种? 6. 供应链管理的特点是什么? 7. 简述物流产业政策的构成。 三、论述题(每题10分,共20分) 1.什么是物流?如何深入理解物流的内涵? 2.请论述如何制定企业的物流战略。 四、案例题(25分) 海尔在连续16年保持80%的增长速度之后,近两年来又悄然进行着一场重大的管理革命。这就是在对企业进行全方位流程再造的基础之上,建立了具有国际水平的自动化、智能化的现代物流体系,使企业的运营效益发生了奇迹般的变化,资金周转达到一年15次,实现了零库存、零运营成本和与顾客的零距离,突破了构筑现代企业核心竞争力的瓶颈。 海尔物流通过三个JIT,实现同步流程。海尔集团100%的采购订单从网上下达,使采购周期由原来的平均10天降为3天。海尔能将所有与供应商相关的物流管理业务信息,如采购计划。采购订单、库存信息、供应商供货清单、配额以及采购价格和计划交货时间通过信息系统发布给供应商,使供应商足不出户就能全面了解和制订与自己相关的物流管理信息(如根据采购计划备货,根据采购订单送货等等)。在这种条件下,实现原材料采购的寄售模式也成为了可能。通过这个模式将备货转化为供应商库存,减少库存积压资金。货物人库后,物流部

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