429 research outputs found

    Flight assessment of a large supersonic drone aircraft for research use

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    An assessment is made of the capabilities of the BQM-34E supersonic drone aircraft as a test bed research vehicle. This assessment is made based on a flight conducted for the purpose of obtaining flight test measurements of wing loads at various maneuver flight conditions. Flight plan preparation, flight simulation, and conduct of the flight test are discussed along with a presentation of the test data obtained and an evaluation of how closely the flight test followed the test plan

    Strain-gage bridge calibration and flight loads measurements on a low-aspect-ratio thin wing

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    Strain-gage bridges were used to make in-flight measurements of bending moment, shear, and torque loads on a low-aspect-ratio, thin, swept wing having a full depth honeycomb sandwich type structure. Standard regression analysis techniques were employed in the calibration of the strain bridges. Comparison of the measured loads with theoretical loads are included

    The Dougherty Manual Labor School of the South Carolina Conference and its Evolution into the Famous Cokesbury Conference Institute

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    Written at the centennial of the school, the article is a history of early education in South Carolina Methodism

    The Orbital Period of the Be/Neutron Star Binary RX J0812.4-3114

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    We present the results of Rossi X-ray Timing Explorer observations of the Be star X-ray binary system RX J0812.4-3114. A light curve obtained with the RXTE All-Sky Monitor shows that the source is currently in an active state with outbursts occurring at approximately 80 day intervals. The source underwent a transition from an inactive state to this regular outburst state early in 1998. An observation of RX J0812.4-3114 was obtained with the RXTE Proportional Counter Array close to the time of a predicted maximum in March 1999 and strong pulsations were detected at a period of 31.88 seconds. This confirms the result of an earlier PCA observation by Reig & Roche which was serendipitously also obtained near the predicted maximum flux of the 80 day period and also near the start of the current active state. We interpret the periodicity in the ASM light curve as indicating the orbital period of RX J0812.4-3114 with outbursts occurring around periastron passage

    Methodist Ministers in South Carolina, 1942

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    Biographical Sketches of the Ministers of the South Carolina and Upper South Carolina Conferences, Southeastern Jurisdiction, The Methodist Church George K. Way and C. E. Peele, Editors D. D. Peele, Business Manager 1942 Southern Christian Advocate Print Columbia, S. C.https://digitalcommons.wofford.edu/methodistdirectories/1002/thumbnail.jp

    Role of histamine as a putative inhibitory transmitter in the honeybee antennal lobe

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    BACKGROUND: Odors are represented by specific spatio-temporal activity patterns in the olfactory bulb of vertebrates and its insect analogue, the antennal lobe. In honeybees inhibitory circuits in the AL are involved in the processing of odors to shape afferent odor responses. GABA is known as an inhibitory transmitter in the antennal lobe, but not all interneurons are GABAergic. Therefore we sought to analyze the functional role of the inhibitory transmitter histamine for the processing of odors in the honeybee AL. RESULTS: We optically recorded the representation of odors before, during and after histamine application at the input level (estimated from a compound signal), and at the output level (by selectively measuring the projection neurons). For both, histamine led to a strong and reversible reduction of odor-evoked responses. CONCLUSION: We propose that histamine, in addition to GABA, acts as an inhibitory transmitter in the honeybee AL and is therefore likely to play a role in odor processing

    Automated Control Systems and Methods for Underground Crop Harvesters

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    Methods and devices for automated adjustment of a digging implement during harvest of underground crops are described. Utilizing the devices, a digging implement, e.g., a blade, can be located and maintained at a desired depth as a harvester travels across a field. During use, the digging implement depth controls can be varied as the harvester travels within a single field under different operating conditions, e.g., different soil friability, consistency, etc., thereby preventing crop loss and improving crop yield

    RXTE Observations of the Be star X-ray Transient X0726-260 (4U0728-25) - Orbital and Pulse Periods

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    Rossi X-ray Timing Explorer (RXTE) All Sky Monitor observations of the transient Be star X-ray source X0726-260 suggest a 34.5 day period. This is apparently confirmed by a serendipitous RXTE Proportional Counter Array (PCA) slew detection of the source on 1997 May 5, near the time of a predicted flux maximum. A subsequent 5000 second pointed observation of X0726-260 with the RXTE PCA detector was carried out on 1997 June 7, when X0726-260 was predicted to be bright again, and this revealed pulsations at a period of 103.2 seconds. If the 34.5 day period is orbital, then the pulse period is surprisingly long compared to that predicted by the correlation between orbital period and spin period observed for other Be/neutron star systems. A possible similarity with GROJ2058+42 is briefly discussed.Comment: 7 pages LateX, 7 figures. To be published in Astrophysical Journal Letter

    Alcoholism and recovery: A case study of a former professional footballer

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    What little we know about alcoholism amongst professional footballers comes largely from the media (often tabloid newspapers) and published autobiographies and biographies of high profile stars. The coverage often focuses on deviant behaviour when drunk, such as driving under the influence, marital infidelity, violence, and breaking team rules. There is little or no published research which seeks to understand better what it is like to suffer from alcoholism from the perspective of the player-addicts themselves. In this paper I present a case study of British footballer who had a brief professional career and is in recovery from alcoholism. His subjective experience of alcoholism provides valuable insights into the underlying triggers and/or causes of the illness; its destructive nature; the link between the individual’s addiction and his social circumstances (including football); and his recovery
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