13,534 research outputs found

    Integrative Investment Appraisal of a Lignocellulosic Biomass-to-Ethanol Industry

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    While theoretically more efficient than starch-based ethanol production systems, conversion of lignocellulosic biomass to ethanol is not without major challenges. A multi-region, multi-period, mixed integer mathematical programming model encompassing alternative feedstocks, feedstock production, delivery, and processing is developed. The model is used to identify key cost components and potential bottlenecks, and to reveal opportunities for reducing costs and prioritizing research. The research objective was to determine for specific regions in Oklahoma the most economical source of lignocellulosic biomass, timing of harvest and storage, inventory management, biorefinery size, and biorefinery location, as well as the breakeven price of ethanol, for a gasification-fermentation process. Given base assumptions, gasification-fermentation of lignocellulosic biomass to ethanol may be more economical than fermentation of corn grain. However, relative to conventional fermentation processes, gasification-fermentation technology is in its infancy. It remains to be seen if the technology will be technically feasible on a commercial scale.biomass, biorefinery location, ethanol, integrative investment appraisal, logistics, mixed integer programming, Resource /Energy Economics and Policy,

    History of the Cherokee Outlet

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    Limiting the Mortgage Interest Deduction by Size of Home: Effects on the User Cost and Price of Housing Across Metropolitan Areas

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    In this paper, I examine the user cost and home price implications of limiting the federal mortgage interest deduction (MID) based on the square footage of a home. I extend the standard user cost model to include a square footage-based cap on the tax-favored status of mortgage interest. I compare two policy alternatives: one that limits the marginal deduction based on home size, and another that removes the deduction on the home based on home size. There is substantial variation across metropolitan areas in both the number of homes exposed to each type of cap, the user cost increase, and the resulting expected price declines

    Report of the Governor of Oklahoma, 1898

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    Annual Report of the Sec. of Interior. 22 Nov. HD 5, 55-3, v14-25, 9995p. [3756-3767] Report on Indian Affairs; annual report of the Gen. Land Office (Serial 3756); annual report of the CIA (Serial 3757); etc

    A Yarmouthian molluscan fauna in the mid-continent region of the United States

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    48 p., 6 pl., 4 fig.http://paleo.ku.edu/contributions.htm

    Caddoan Ceremonial Sites of the Caddoan Cultural Area of Arkansas, Louisiana, Oklahoma, and Texas: Draft Caddo National Landmark Nomination

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    Since 1997, we have been working on the development of a National Historic Landmark (NHL) cover nomination for Caddoan ceremonial sites - earthen mounds in the Caddoan cultural area of southwestern Arkansas, northwestern Louisiana, eastern Oklahoma, and northeastern Texas. Such a nomination establishes the historic context within which all similar cultural properties can be evaluated for significance according to the NHL criteria, as it establishes the research and other criteria by which a cultural property may be identified as a significant archeological resource

    Westview: Vol. 1, Iss. 4 (Summer 1982)

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    Deconstructing the Sanders Focus and the Sanders Phase : A Reply to Perttula Regarding the Taxonomy and Significance of the So-called Sanders Focus, or Sanders Phase, Pottery of Northeast Texas and Southeast Oklahoma

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    Perttula is correct in pointing out that there are numerical errors in a recently published table of mine. A revised version is presented here as Table 1. Although several of these errors are numerically large and might have caused problems had they gone uncorrected, Perttula is not correct in suggesting that they are serious in the sense that they have affected the conclusions I reached based on the table, the insinuation being that they weaken my Sanders entrepot hypothesis. They do not. That hypothesis is part of the reinterpretation of the archeology and bioanthropology of the Arkansas Valley and the Red River Valley which I have been developing for more than eight years. It could hardly be weakened by errors in this table which is simply a compilation of the pottery of the five so-called Sanders focus/phase types reported from the list of sites with probable Sanders phase components recently proffered by Bruseth, Wilson, and Perttula

    The Forty Years Fight to Desegregate Public Education in the Fifth Circuit and in Particular, Mississippi

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    Symposium - The Role of the United States Court of Appeals for the Fifth Circuit in the Civil Rights Movemen
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