12,498 research outputs found
Ordering at two length scales in comb-coil diblock copolymers consisting of only two different monomers
The microphase separated morphology of a melt of a specific class of
comb-coil diblock copolymers, consisting of an AB comb block and a linear
homopolymer A block, is analyzed in the weak segregation limit. On increasing
the length of the homopolymer A block, the systems go through a characteristic
series of structural transitions. Starting from the pure comb copolymer the
first series of structures involve the short length scale followed by
structures involving the large length scale. A maximum of two critical points
exists. Furthermore, in the two parameter space, characterizing the comb-coil
diblock copolymer molecules considered, a non-trivial bifurcation point exists
beyond which the structure factor can have two maxima (two correlation hole
peaks).Comment: 22 pages, 12 Postscript figures (revtex
Debreu's Coefficient of Resource Utilization, the Solow Residual and TPF: The Connection by Leontief Preferences
Debreu s coefficient of resource utilization is freed from individual data requirements.The procedure is shown to be equivalent to the imposition of Leontief preferences.The rate of growth of the modified Debreu coefficient and the Solow residual are shown to add up to TFP growth.This decomposition is the neoclassical counterpart to the frontier analytic decomposition of productivity growth into technical change and efficiency change.The terms can now be broken down by sector as well as by factor input.efficiency;productivity;growth;technological change
Aggregation of Productivity Indices: The Allocative Efficiency Correction
Industry productivity is obtained by aggregation of firm productivities and inclusion of the appropriate allocative efficiency terms, one for each firm.This paper identifies the latter correction terms.aggregation;productivity;efficiency;allocation
Bob Russell Volume: Don't Aggregate Efficiency but Disaggregate Inefficiency
aggregation;efficiency;technology
Club Efficiency and Lindahl Equilibrium with Semi-Public Goods
Limit core allocations are the ones that remain in the core of a replicated economy. An equivalent notion for economies with public goods is Schweizer's club efficiency. We extend this notion to economies with goods that have a semi-public nature. The notion encompasses purely private as well as purely public club goods as polar cases. We show that given certain conditions the equivalence of club efficient allocations and Lindahl equilibria holds for a wide range of economies with semi-public club goods. We also show that extension to a more general class of economies seems implausible.clubs;club efficiency;Lindahl equilibrium;limit cores
Engines of Growth in the U.S. Economy
There is good reason to believe that R&D influences on TFP growth in other sectors are indirect.For R&D to spill over, it must first be successful in the home sector.Indeed, observed spillovers conform better to TFP growth than to R&D in the upstream sectors.Sectoral TFP growth rates are thus interrelated.Solving the intersectoral TFP equation resolves overall TFP growth into sources of growth.The solution essentially eliminates the spillovers and amounts to a novel decomposition of TFP growth.The top 10 sectors are designated engines of growt led by computers and office machinery.The results are contrasted to the standard, Domar decomposition of TFP growth.Spillovers;input-output;sources of growth
Competitive Pressure on China: Factor Rewards Migration
Our objective is to assess personal income under perfect competition, when factors are rewarded according to their productivities, and to contrast the ensuing distribution with the status quo.Competition will yield winners and losers, both in terms of factor claims and in terms of regions or provinces. Income differences will press people to migrate.To analyze this, we divide China into 30 input-output sectors and 27 provinces; we maximize domestic final demand, while preserving its proportions in each province, subject to material balances and factor constraints.The shadow prices to the constraints represent competitive commodity prices and factor rewards.Unskilled labor would stand to lose and, therefore, inequality would mount.The pressure on interprovincial migration would be enormous with 10 to 20% of the people on the road.The flipside is the great potential for improvement of the average standard of living.competition;income distribution;migration
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