WATER ECONOMICS PUBLICATIONS 1961-2003

This technical bulletin is a compilation of water-related publications by the faculty of the Department since 1961. Topics range from the economics of irrigation to the use of windmills and from water supply policy to water quality in feedyards and playa lakes. Most of the publications address regional issues with widespread implications, but some articles address water issues in other regions of the United States and the world. This listing illustrates the depth and breadth of the work done on water issues within the Department.Resource /Energy Economics and Policy,

Art and First Amendment Protection in Light of Texas v. Johnson

A work of art has been defined as: any human work made with the specific purpose of stirring human emotions; something displaying artistic merit:...all works belonging fairly to the so-called fine arts, painting, drawing, and sculpture

Interview of Jeff Schwartz by Bill Shkurti

Aptheker, Herbert: Marxist historian, political activist (pp. 7, 9, 13-17, 20, 22) -- Brauner, Charles: Professor, College of Education (p. 6) -- Bricker, John: U.S. Senator, member of the OSU Board of Trustees (pp. 10,17) -- Darling, Stan: President, Undergraduate Student Government (pp. 7, 26) -- Fawcett, Novice: President, OSU (pp. 6-7, 10, 17-18, 20) -- Knepley, Dennis: Co-founder of the Free Speech Front (pp.6-7) -- Lenzo, Bob: Co-founder of the Free Speech Front (pp.6-7) -- Loop, Alan: Chairman of the Board of Trustees (pp. 21-22) -- Ochs, Phil: OSU alumnus, folk singer (pp. 9-10) -- Rhodes, James: Governor of Ohio (pp. 20-21) -- Schwartz, Niki: Politically active OSU student and Jeff Schwartz’ brother (pp. 2-3, 5-6, 26) -- Shocknessy, James: Member of the OSU Board of Trustees (pp. 21).Interview conducted at The Ohio State University Archives, Columbus, Ohio.The interview discusses OSU alumnus Jeff Schwartz's work on campus with the free-speech movement in the mid-1960s, particularly 1965. As an undergraduate, he became involved with the OSU student group, the Free Speech Front (FSF), because of his earlier involvement in the civil rights movement in Louisiana. He was a participant and important contributor to the Free Speech Front's goal of eradicating the University's restriction on campus speakers, known as the Speakers Rule. One strategy was for Schwartz and others in the FSF to participate in two sit-ins in the Administration Building to influence University officials to change the rule. A later strategy was to invite noted Marxist historian Herbert Aptheker to campus to not speak, but instead have students read his work as he stood by. Several months after that event in 1965, the OSU Board of Trustees effectively abolished the rule. Schwartz also discusses how his involvement in the free-speech movement influenced his later career as a lawyer and organizational-effectiveness coach and consultant

Instrumented Lumbar Corpectomy and Spinal Reconstruction Comparing rhBMP-2/Compression-Resistant Matrix, rhBMP-2/Absorbable Collagen Sponge/Ceramic Granules Mixture, and Autograft in Two Different Devices: A Study in Sheep

Study Design. Fusion success with rhBMP-2 and autograft in titanium or PEEK corpectomy devices was evaluated in a sheep lumbar corpectomy model. The 6 treatment groups included titanium mesh or PEEK corpectomy devices filled with rhBMP-2 on a compression-resistant matrix (CRM) carrier; rhBMP-2 in a morselized absorbable collagen sponge (ACS) carrier combined with resorbable ceramic granules; and autograft. Objective. The aim of this study was to determine fusion rates associated with 2 different preparations of rhBMP-2 as well as autograft in an instrumented ovine lumbar corpectomy model 6 months postoperatively. Summary of Background Data. Vertebral reconstruction with corpectomy devices requires bone graft. Bone graft substitutes have the potential to avoid a second operation, donor site pain, and attendant morbidity associated with autograft. Methods. Twenty-four sheep in 6 treatment groups underwent lumbar corpectomy via a retroperitoneal trans-psoas approach. Spines were reconstructed with autograft, rhBMP-2 on a CRM, or rhBMP-2 on an ACS mixed with ceramic granules. Grafting materials were placed in either a titanium mesh or PEEK conduit in spines with internal fixation. Computed tomographic (CT) scans were evaluated for fusion. Undecalcified histology was used to evaluate for fusion as well as the amount and extent of graft incorporation and graft resorption. Results. Regardless of corpectomy device used, rhBMP-2/CRM or rhBMP-2/ACS with MASTERGRAFT resulted in a 100% fusion rate. The autograft group had a lower (75%) radiographic fusion rate. Using either preparation of rhBMP-2 resulted in the length of the defect filling with solid bone. Autograft fragments and ceramic granules were incorporated into the fusion masses with much of the ceramic granules being resorbed by 6 months. Conclusion. Both of the rhBMP-2 formulations have the potential to effect bony fusion and vertebral reconstruction within the corpectomy devices

High-order Discretization of a Gyrokinetic Vlasov Model in Edge Plasma Geometry

We present a high-order spatial discretization of a continuum gyrokinetic Vlasov model in axisymmetric tokamak edge plasma geometries. Such models describe the phase space advection of plasma species distribution functions in the absence of collisions. The gyrokinetic model is posed in a four-dimensional phase space, upon which a grid is imposed when discretized. To mitigate the computational cost associated with high-dimensional grids, we employ a high-order discretization to reduce the grid size needed to achieve a given level of accuracy relative to lower-order methods. Strong anisotropy induced by the magnetic field motivates the use of mapped coordinate grids aligned with magnetic flux surfaces. The natural partitioning of the edge geometry by the separatrix between the closed and open field line regions leads to the consideration of multiple mapped blocks, in what is known as a mapped multiblock (MMB) approach. We describe the specialization of a more general formalism that we have developed for the construction of high-order, finite-volume discretizations on MMB grids, yielding the accurate evaluation of the gyrokinetic Vlasov operator, the metric factors resulting from the MMB coordinate mappings, and the interaction of blocks at adjacent boundaries. Our conservative formulation of the gyrokinetic Vlasov model incorporates the fact that the phase space velocity has zero divergence, which must be preserved discretely to avoid truncation error accumulation. We describe an approach for the discrete evaluation of the gyrokinetic phase space velocity that preserves the divergence-free property to machine precision