Distance requirements for ramp metering.

Texas Department of Transportation, Austin

Decision sight distance for highway design and traffic control requirements. Final report.

Federal Highway Administration, Office of Research, Washington, D.C.

The economic impacts and uses of long-distance trails : featuring a case study of the Overmountain Victory National Historic Trail /

Includes index.

Issues and innovations in distance learning /

"September 1998"--T.p. verso.

Study designs for passing sight distance requirements. Final report.

Federal Highway Administration, Office of Safety and Traffic Operations Research and Development, McLean, Va.

Highway sight-distance requirements: truck applications. Final report.

Mode of access: Internet.

Construction of long distance transmission lines /

Typescript.

A voyage to the Pacific Ocean : undertaken, by the command of His Majesty, for making discoveries in the Northern hemisphere, to determine the position and extent of the west side of North America, its distance from Asia, and the practicability of a northern passage to Europe : Performed under the direction of Captains Cook, Clerke, and Gore, in His Majesty's ships the Resolution and Discovery, in the years 1776, 1777, 1778, 1779, and 1780 /

Mode of access: Internet.

Twin Pines, Level Distance

Zhao Mengfu; 10 15/16 in.x 3 ft. 5 39/64 in.; handscroll, ink on paper

Twin Pines, Level Distance, section 1, trees

Zhao Mengfu; handscroll, ink on paper

Twin Pines, Level Distance, section 1: rocks

Zhao Mengfu; handscroll, ink on paper

Operator's and organizational maintenance : survey electronic distance measuring equipment, infrared, model DM-60 (M-1), NSN 6675-01-010-5948.

Includes index.

Outlines of a grammar, vocabulary, and phraseology, of the aboriginal language of South Australia, spoken by the natives in and for some distance around Adelaide.

pt. 1. Outlines of a grammar.--pt. 2. Vocabulary, &c., &c.

Molecular basis of intramolecular electron transfer in sulfite-oxidizing enzymes is revealed by high resolution structure of a heterodimeric complex of the catalytic molybdopterin subunit and a c-type cytochrome subunit

Sulfite-oxidizing molybdoenzymes convert the highly reactive and therefore toxic sulfite to sulfate and have been identified in insects, animals, plants, and bacteria. Although the well studied enzymes from higher animals serve to detoxify sulfite that arises from the catabolism of sulfur-containing amino acids, the bacterial enzymes have a central role in converting sulfite formed during dissimilatory oxidation of reduced sulfur compounds. Here we describe the structure of the Starkeya novella sulfite dehydrogenase, a heterodimeric complex of the catalytic molybdopterin subunit and a c-type cytochrome subunit, that reveals the molecular mechanism of intramolecular electron transfer in sulfite-oxidizing enzymes. The close approach of the two redox centers in the protein complex (Mo-Fe distance 16.6 angstrom) allows for rapid electron transfer via tunnelling or aided by the protein environment. The high resolution structure of the complex has allowed the identification of potential through-bond pathways for electron transfer including a direct link via Arg-55A and/or an aromatic-mediated pathway. A potential site of electron transfer to an external acceptor cytochrome c was also identified on the SorB subunit on the opposite side to the interaction with the catalytic SorA subunit.

A Bayesian approach to imposing curvature on distance functions

The estimated parameters of output distance functions frequently violate the monotonicity, quasi-convexity and convexity constraints implied by economic theory, leading to estimated elasticities and shadow prices that are incorrectly signed, and ultimately to perverse conclusions concerning the effects of input and output changes on productivity growth and relative efficiency levels. We show how a Bayesian approach can be used to impose these constraints on the parameters of a translog output distance function. Implementing the approach involves the use of a Gibbs sampler with data augmentation. A Metropolis-Hastings algorithm is also used within the Gibbs to simulate observations from truncated pdfs. Our methods are developed for the case where panel data is available and technical inefficiency effects are assumed to be time-invariant. Two models-a fixed effects model and a random effects model-are developed and applied to panel data on 17 European railways. We observe significant changes in estimated elasticities and shadow price ratios when regularity restrictions are imposed. (c) 2004 Elsevier B.V. All rights reserved.