502 research outputs found

    Request Generation 2 mission planning and scheduling

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    Request Generation II (ReGe II) is a PC-based prototype knowledge based system intented to assist USAF personnel in planning and scheduling satellite operations for their Mission Control Complexes (MCC). It aids MCC personnel in producing weekly Program Action Plans (PAPs) for each of the satellite vehicles an MCC is responsible for monitoring and maintaining. The PAPs are input to the Resource Control Complex (RCC) which schedules all satellite support requests for usage of the network

    Concert recording 2013-12-01

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    [Track 01]. Partita no. 2. Chaconne / J.S. Bach -- [Track 02]. Sicilliene and Rigaudon / Fritz Kreisler -- [Track 03]. Sonata no. 5. Allegro ; [Track 04]. Adagio ; [Track 05]. Scherzo ; [Track 06]. Rondo / Ludwig van Beethoven

    On the Basing-Point System: Reply

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    The Imperial Reserve The Indian Infantry on the Western Front., 1914- 15

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    Doctor of PhilosophyDepartment of HistoryIn the course of my studies leading to this dissertation, I have incurred great debts to many people, and it would be impossible to mention all of them. However, it is my great pleasure to acknowledge some. While all the members of the History Department of Kansas State University, as well as a few from the Department of Anthropology, and of Modern Languages have been of help to me, two in particular deserve special mention. My major Professor, Dr. Robin Higham, made a great contribution to all my studies and to this dissertation. So did Professor Kenneth Jones who taught me what a historian is supposed to do and be. In time, I hope to approach his standards of excellence. On a more personal level, many others have been of assistance. Without the loyal and unswerving support of Ms. Ellen Sanders, my first three years of study at KSU would have been impossible. I would like to thank my father, Major F. W. Greenhut, U.S. Army (Ret.), for awakening my interest in things military, and my mother, Julia Mehlman Greenhut, M. D. who, even though she didn't want me to be "that kind of doctor" nonetheless provided generous and essential financial support. My children, Wendy and David, to whom this dissertation is dedicated, unknowingly provided an anchor which kept me steady in my work. Finally, great praise to my wife, Susan, whose contribution to me and to my work is truly unmeasurable

    Concert recording 2014-04-07a

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    [Track 01]. Oboe concerto in D minor. Andante e spicatto / Alessandro Marcello -- [Track 02]. Oboe concerto in D minor. Adagio / Alessandro Marcello -- [Track 03]. Oboe concerto in D minor. Presto / Alessandro Marcello -- [Track 04]. Concertino for oboe and piano. Allegro giocoso / Nikos Skalkottas -- [Track 05]. Concertino for oboe and piano. Andante tranquillo / Nikos Skalkottas -- [Track 06]. Concertino for oboe and piano. Allegro vivo / Nikos Skalkottas -- [Track 07]. Shepherds of Provence. Call at dawn / Eugene Bozza -- [Track 08]. Shepherds of Provence. Pastorale provencale / Eugene Bozza -- [Track 09]. Two pieces for two oboes and English horn. Adagio doloroso / Gordon Jacob -- [Track 10]. Two pieces for two oboes and English horn. Allegro giocoso / Gordon Jacob -- [Track 11]. Sonatina for oboe and piano. Leggiero / Malcolm Arnold -- [Track 12]. Sonatina for oboe and piano. Andante con moto / Malcolm Arnold -- [Track 13]. Sonatina for oboe and piano. Vivace / Malcolm Arnold

    An analysis of buckling in spherical shells and its design implications for hopper poppers

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    Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2006.Cataloged from PDF version of thesis.Includes bibliographical references (page 33).The purpose of this project was to investigate a key design parameter of a hopper popper: the force it takes to "load," or invert, the popper. A hopper popper is an injection-molded rubber toy in the shape of a hemispherical shell that stores elastic potential energy when inverted. There is new interest for hopper poppers in projectile toys. However, the force it takes to invert the popper can easily exceed what child can produce. In the course of the study, tests were conducted on ten different hopper poppers to measure the force and displacement of loading. Theoretical equations for the buckling of spherical shells were then correlated to the data. It was found that the equations accurately predicted the main variables in buckling, which are the Young's modulus of the material, the radius of the popper, and the thickness of the shell. Furthermore, the ability of a hopper popper to be bi-stable (invert and stay inverted) was examined. It was found that the degree of curvature was the biggest factor in the stability of poppers; the closer the curvature was to 180 degrees, the more stable a popper was when inverted. Additionally, a more sophisticated brand of hopper poppers, known as Dropper Poppers, was examined to see what makes them more impressive than ordinary poppers. It was found that a hole of 0.14 inches in diameter helps these poppers stabilize when inverted even though their curvature is only 150 degrees. The lower angle was found to reduce inverting force because the normal force supplied to the bottom perimeter of the popper had a perpendicular component that helped stretch the popper out as it was being loaded. Finally, this thesis presents ideas for the future of hopper poppers. One is a mechanism designed for a blaster, which uses the mechanical advantage of a lever arm to invert a popper. Another is a design for new hopper poppers which could take less force to invert than a normal hopper popper, but store the same elastic potential energy.by Andrew D. Greenhut.S.B

    Modeling and analysis of hybrid geothermal-solar thermal energy conversion systems

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    Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, February 2010.Cataloged from PDF version of thesis.Includes bibliographical references (p. 116-118).Innovative solar-geothermal hybrid energy conversion systems were developed for low enthalpy geothermal resources augmented with solar energy. The goal is to find cost-effective hybrid power cycles that take advantage of the potential synergies of solar thermal and geothermal resources. One aspect is to determine the hybrid configuration that yields the highest annualized electricity generation. The levelized cost of electricity (LCOE) is estimated using equipment costing rules of thumb developed from Aspen HTFS and Aspen ICARUS software and from other sources. Detailed models for the hybrid solar-geothermal system were developed using Aspen Plus and Aspen Dynamics. Turbine flexibility relative to vapor flow rate, temperature and pressure variations was analyzed. In one scenario, a parametric steady-state study was carried out to examine the performance over the range of conditions resulting from diurnal and seasonal variations. The results of the diurnal and seasonal parametric studies were grossly weighted to approximate a typical year in Nevada, and these results led to an estimate of the annualized electricity generation. In another scenario, a dynamic model was selected from possible "greenfield" hybrid systems and used to examine the transient performance for a typical January day and a typical July day in Nevada. The dynamic model approximates the thermal inertial of the heat exchangers and the working fluids in the exchangers, solar collectors, piping and storage tanks. The dynamic model is driven with forcing functions for solar input and ambient temperature to approximate the typical winter and summer days.(cont.) In all cases, solar energy was found to come at a higher cost per kW capacity than geothermal when the cost of geothermal wells was not considered. However, including well costs had an effect of evening out the levelized cost of electricity. Model complexity increased as more solar heat was added to existing geothermal systems, which suggests that moving a higher exergy heat source down to a lower exergy heat source is difficult, especially given the transient nature of the solar resource. The models developed in this thesis demonstrate the design decisions and complex dynamic behavior inherent in this type of hybrid system.by Andrew David Greenhut.S.M

    \u3cem\u3eiac\u3c/em\u3e Gene Expression in the Indole-3-Acetic Acid-Degrading Soil Bacterium \u3cem\u3eEnterobacter soli\u3c/em\u3e LF7

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    We show for soil bacterium Enterobacter soli LF7 that the possession of an indole-3-acetic acid catabolic (iac) gene cluster is causatively linked to the ability to utilize the plant hormone indole-3-acetic acid (IAA) as a carbon and energy source. Genome-wide transcriptional profiling by mRNA sequencing revealed that these iac genes, chromosomally arranged as iacHABICDEFG and coding for the transformation of IAA to catechol, were the most highly induced (\u3e29-fold) among the relatively few (iac cluster were genes for a major facilitator superfamily protein (mfs) and enzymes of the β-ketoadipate pathway (pcaIJD-catBCA), which channels catechol into central metabolism. This entire iacHABICDEFG-mfs-pcaIJD-catBCA gene set was constitutively expressed in an iacR deletion mutant, confirming the role of iacR, annotated as coding for a MarR-type regulator and located upstream of iacH, as a repressor of iac gene expression. In E. soli LF7 carrying the DNA region upstream of iacH fused to a promoterless gfp gene, green fluorescence accumulated in response to IAA at concentrations as low as 1.6 μM. The iacH promoter region also responded to chlorinated IAA, but not other aromatics tested, indicating a narrow substrate specificity. In an iacR deletion mutant, gfp expression from the iacH promoter region was constitutive, consistent with the predicted role of iacR as a repressor. A deletion analysis revealed putative −35/−10 promoter sequences upstream of iacH, as well as a possible binding site for the IacR repressor

    Turbulent transport and production/destruction of ozone in a boundary layer over complex terrain

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    The first Intensive Observation Period (IOP) of the Swiss air pollution experiment POLLUMET took place in 1990 in the Aare River Valley between Bern and Zurich. During the IOP, fast response measurements of meteorological variables and ozone concentration were made within the boundary layer aboard a motorglider. In addition, mean values of meteorological variables and the concentrations of ozone and other trace species were measured using other aircraft, pilot balloons, tethersondes, and ground stations. Turbulent flux profiles of latent and sensible heat and ozone are calculated from the fast response data. Terms in the ozone mean concentration budget (time rate of change of mean concentration, horizontal advection, and flux divergence) are calculated for stationary time periods both before and after the passage of a cold front. The source/sink term is calculated as a residual in the budget, and its sign and magnitude are related to the measured concentrations of reactive trace species within the boundary layer. Relationships between concentration ratios of trace species and ozone concentration are determined in order to understand the influence of complex terrain on the processes that produce and destroy ozone
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