A Week on the Concord and Merrimack Rivers - download pdf or read online

By Henry David Thoreau, H. Daniel Peck

ISBN-10: 1440665192

ISBN-13: 9781440665196

Thoreau's account of his 1839 boat journey is a finely crafted tapestry of shuttle writing, essays, and lyrical poetry. Thoreau interweaves descriptions of average phenomena, the agricultural panorama, and native characters with digressions on literature and philosophy, the local American and Puritian histories of latest England, the Bhagavad Gita, the imperfections of Christianity, and plenty of different subjects.

even though it stocks a few of the topics in Thoreau's vintage WALDEN, every week bargains another viewpoint on his analaysis of the connection among nature and tradition.

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15) was necessary and sufficient for the existence of an efficiency index that satisfied the Fare/Lovell axioms. ) This turns out to be neither necessary nor sufficient, as shown by Dmitruk and Koshevoy (1991), who provided a complete characterization of the class of technologies for which one can construct an efficiency index satisfying the Fare/Lovell axioms (maintaining strong disposability). 16) R~ and let A(u) be the closure of A(u). 17) Theorem: An efficiency index satisfying (I), (M), and (H) exists for all (closed) technologies satisfying strong input disposability if and only if L(u) n A(u) = Eff(u).

Distance Functions in Consumer and Producer Theory 29 At the same time, Fare and Lovell (1978) noted that the Debreu/ Farrell index of technical efficiency had some unattractive properties if technologies did not satisfy strong input disposability. 7, 1/D1{u*,x) = 1 although x is not efficient in the production of u*. Also, although 2x > 2x*, and hence 2x is, in an obvious sense, less efficient in the production of u*, nevertheless D1{u*, 2x) = D 1(u*,2x*), so that 2x and 2x* receive the same efficiency score according to the Debreu/Farrell criterion.

To illustrate the first property, consider the u-dependent price sets, L*(t£) = {p E R~+ I C(u,p) ~ I}. 18) These upper-level sets for C can be interpreted as containing the price vectors that yield a minimal cost of producing output vector u, or utility level u, that is no less than 1. As such, their interiors are the sets of prices that are too high to produce output u or attain utility level u at expenditure level 1. Computing these level sets at unit expenditure is simply a convenient and harmless normalization.

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A Week on the Concord and Merrimack Rivers by Henry David Thoreau, H. Daniel Peck

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