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Burning bluegrass seed stubble is an important production practice that, among other benefits, increases production and stand life of this perennial crop. Despite economic forecasts that higher production costs from the 1996 state ban on seed stubble burning would reduce Washington production by up to 30%, output in the years 1998–2005 was nearly two-thirds higher than in any previous eight-year period. This study seeks to explain why that paradoxical behavior occurred. This study puts forward and systematically tests several hypotheses. The only hypothesis with any support, innovation offsets, is examined by an assessment of contemporaneous innovations and by corroborative statistical evidence.  相似文献   
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This paper applies a novel empirical approach to characterising the horizontal‐ness and vertical‐ness of affiliates based on Yeaple's complex FDI concept. In its simplest form, horizontal‐ness is measured as affiliates’ local sales share while their vertical‐ness is measures as their share of non‐local sourcing of intermediates. Japanese affiliates in most sectors and nations are partly vertical and partly horizontal, but those in North American are far more ‘horizontal’ than those in the EU and Asia. Affiliates became more vertical between 1996 and 2005. A four‐way sales and sourcing split (host, home, regional and RoW) suggests that affiliates act as nodes in regional production networks – especially in Asia. We posit several hypotheses that could be tested with our empirical approach.  相似文献   
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The relationship between sources of income and demand decisions by the household is examined here with an eye toward the ramifications on consumption tax bases. Income sources may be important when households attach psychic and transaction costs to individual purchases or when sources are assigned via a mental accounting process. In either case, general and specific sales tax bases may be affected by changes in income composition. Empirical results indicate two important findings. First, tax exemptions can introduce significant income source effects for a general consumption tax base. Second, the importance of differential tax rates for gasoline and food-at-home strongly depends on the mix of labour, capital, retirement and non-retirement transfer pay.  相似文献   
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How should social scientists, inclined to an evolutionary theory of aspects of human culture like science, technology, business organization and practice, react to proposals that they embrace a “Universal Darwinism”? The most prominent variety of Universal Darwinism argues for close counterparts between the variables and mechanisms of cultural evolution and biological evolution, for example proposing the concept of “memes” as units of culture. Other Universal Darwinists propose, more flexibly, that human culture and biological species both change over time through a process that involves variation and selection, but that the details of the processes may be very different. This essay argues that the narrower form of Universal Darwinism should not be acceptable to social scientists. The differences in the details of cultural evolution and biological evolution are considerable. On the other hand, if Universal Darwinism provides a roomy intellectual tent welcoming scholars studying a variety of topics, with the unifying element being a dynamic theory involving variation and selection, but with the key variables and mechanisms being recognized as perhaps differing greatly between biology and human culture, we can be happy in that camp. Evolutionary Social Science and Universal Darwinism.  相似文献   
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This exploratory empirical study proffers and empirically examines the following two hypotheses: the higher the monthly rent levels being charged for apartments, the lower the percent of the population age 18 years to age 65 that opts to obtain private (whether group or individual) health insurance: and the greater the percentage growth rate of median household income, the greater the growth in the capacity to purchase health insurance. Panel 2SLS estimation provides what may be viewed as at least preliminary empirical support for both hypotheses. Certain policy implications are suggested.  相似文献   
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