122 research outputs found

    Letter, 1979 November 23, from Bob Olson to Catherine Robison

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    1 page, Catherine Robison is the wife of Carson Robison. Robison and Frank Luther are meantioned in this letter

    Letter, 1988 November 3, from Bob Olson to Catherine Robison

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    1 page, Catherine Robison is the wife of Carson Robison. David Crisp is meantioned in this letter

    The Basics of Contract Grazing

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    Contract grazing arrangements put livestock on pastures in managed grazing systems. This fact sheet, #1 in a four-part series, describes the basics of contract grazing

    Wheat streak mosaic, High Plains disease, and Triticum mosaic: Three virus diseases of wheat in Oklahoma

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    The Oklahoma Cooperative Extension Service periodically issues revisions to its publications. The most current edition is made available. For access to an earlier edition, if available for this title, please contact the Oklahoma State University Library Archives by email at [email protected] or by phone at 405-744-6311

    Self-adaptive federated authorization infrastructures

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    Authorization infrastructures are an integral part of any network where resources need to be protected. As networks expand and organizations start to federate access to their resources, authorization infrastructures become increasingly difficult to manage. In this paper, we explore the automatic adaptation of authorization assets (policies and subject access rights) in order to manage federated authorization infrastructures. We demonstrate adaptation through a Self-Adaptive Authorization Framework (SAAF) controller that is capable of managing policy based federated role/attribute access control authorization infrastructures. The SAAF controller implements a feedback loop to monitor the authorization infrastructure in terms of authorization assets and subject behavior, analyze potential adaptations for handling malicious behavior, and act upon authorization assets to control future authorization decisions. We evaluate a prototype of the SAAF controller by simulating malicious behavior within a deployed federated authorization infrastructure (federation), demonstrating the escalation of adaptation, along with a comparison of SAAF to current technology

    Expressions 1978

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    Expressions contains selected work from some of the Creative Writing Contest winners and honorable mentions along with Commercial Art students at Des Moines Area Community College. Design, topography, and layout was accomplished by Journalism students.https://openspace.dmacc.edu/expressions/1000/thumbnail.jp

    The Long-Baseline Neutrino Experiment: Exploring Fundamental Symmetries of the Universe

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    The preponderance of matter over antimatter in the early Universe, the dynamics of the supernova bursts that produced the heavy elements necessary for life and whether protons eventually decay --- these mysteries at the forefront of particle physics and astrophysics are key to understanding the early evolution of our Universe, its current state and its eventual fate. The Long-Baseline Neutrino Experiment (LBNE) represents an extensively developed plan for a world-class experiment dedicated to addressing these questions. LBNE is conceived around three central components: (1) a new, high-intensity neutrino source generated from a megawatt-class proton accelerator at Fermi National Accelerator Laboratory, (2) a near neutrino detector just downstream of the source, and (3) a massive liquid argon time-projection chamber deployed as a far detector deep underground at the Sanford Underground Research Facility. This facility, located at the site of the former Homestake Mine in Lead, South Dakota, is approximately 1,300 km from the neutrino source at Fermilab -- a distance (baseline) that delivers optimal sensitivity to neutrino charge-parity symmetry violation and mass ordering effects. This ambitious yet cost-effective design incorporates scalability and flexibility and can accommodate a variety of upgrades and contributions. With its exceptional combination of experimental configuration, technical capabilities, and potential for transformative discoveries, LBNE promises to be a vital facility for the field of particle physics worldwide, providing physicists from around the globe with opportunities to collaborate in a twenty to thirty year program of exciting science. In this document we provide a comprehensive overview of LBNE's scientific objectives, its place in the landscape of neutrino physics worldwide, the technologies it will incorporate and the capabilities it will possess.Comment: Major update of previous version. This is the reference document for LBNE science program and current status. Chapters 1, 3, and 9 provide a comprehensive overview of LBNE's scientific objectives, its place in the landscape of neutrino physics worldwide, the technologies it will incorporate and the capabilities it will possess. 288 pages, 116 figure

    Photochemistry in biomass burning plumes and implications for tropospheric ozone over the tropical South Atlantic

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    Photochemistry occuring in biomass burning plumes over the tropical south Atlantic is analyzed using data collected during the Transport and Atmospheric Chemistry Near the Equator‐Atlantic aircraft expedition conducted during the tropical dry season in September 1992 and a photochemical point model. Enhancement ratios (ΔY/ΔX, where Δ indicates the enhancement of a compound in the plume above the local background mixing ratio, Y are individual hydrocarbons, CO, O3, N2O, HNO3, peroxyacetyl nitrate (PAN), CH2O, acetone, H2O2, CH3OOH, HCOOH, CH3COOH or aerosols and X is CO or CO2) are reported as a function of plume age inferred from the progression of Δnon‐methane hydrocarbons/ΔCO enhancement ratios. Emission, formation, and loss of species in plumes can be diagnosed from progression of enhancement ratios from fresh to old plumes. O3 is produced in plumes over at least a 1 week period with mean ΔO3/ΔCO = 0.7 in old plumes. However, enhancement ratios in plumes can be influenced by changing background mixing ratios and by photochemical loss of CO. We estimate a downward correction of ∌20% in enhancement ratios in old plumes relative to ΔCO to correct for CO loss. In a case study of a large persistent biomass burning plume at 4‐km we found elevated concentrations of PAN in the fresh plume. The degradation of PAN helped maintain NOx mixing ratios in the plume where, over the course of a week, PAN was converted to HNO3. Ozone production in the plume was limited by the availability of NOx, and because of the short lifetime of O3 at 4‐km, net ozone production in the plume was negligible. Within the region, the majority of O3 production takes place in air above median CO concentration, indicating that most O3 production occurs in plumes. Scaling up from the mean observed ΔO3/ΔCO in old plumes, we estimate a minimum regional O3 production of 17×1010molecules O3 cm−2 s−1. This O3 production rate is sufficient to fully explain the observed enhancement in tropospheric O3 over the tropical South Atlantic during the dry season
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