47,748 research outputs found
New insights into the chronology of Haydn's folksong arrangements: reading between the lines of the George Thomson correspondence
The surviving original correspondence relating to Haydnâs folksong arrangements for George Thomson of Edinburgh is sufficiently extensive to warrant a more detailed account of their chronology than Irmgard Becker-Glauch was in a position to produce some twenty years ago. Referring to the transcriptions published in the critical commentaries to the Joseph Haydn Werke, XXXII/3â4, I offer a few corrections to the received view, calling attention to the need to distinguish batches of tunes Thomson sent to Haydn from the batches of settings Haydn returned and from the sequences in which Thomson then re-ordered them. In the process I cast new light on the revisions Haydn undertook at Thomsonâs request, and on the nature of Haydnâs six variation sets for which Thomson had also sought changes, apparently for instrumental as opposed to vocal use, but which were evidently carried out eventually by someone other than Haydn. Finally I invite reconsideration of Haydnâs motives for undertaking to supply such large quantities of song settings to Scottish publishers late in life, and of how such settings might be evaluated today. Both Haydn and Thomson in their different ways were caught up in a newly found European enthusiasm for collecting melodies and other cultural artefacts, and for disseminating knowledge. Haydn saw the task of supplying symphonies and accompaniments for tunes from beyond the Channel as distinct from his central compositional activity to the extent he could happily put his name to later arrangements he had sub-contracted to Neukomm and others. Furthermore, and notwithstanding the epistemologies of later generations, he plainly saw no contradiction in the presentation of melodies steeped in one culture through the perspective of another. Nor did Haydn see anything amiss with a process whereby Thomson rather than he assumed responsibility for the subsequent fitting of words to the melodies
Seventeenth-century Scotland: the musical sources
Here I offer a concise but comprehensive survey of primary seventeenth-century Scots musical sources, both traced and untraced, citing significant secondary literature, summarizing knowledge to date, calling attention to errors of fact or logic, and offering new observations, all in order to lay proper foundations for badly needed future studies of a distinctive and extensive but hitherto none too accessible body of music. The sources are grouped geographically, rather than by chronology or genre, an arrangement that yields special insights. The article documents several hitherto unrecorded manuscript sources
A bibliography of research on behavioral decision processes to 1968
Bibliography of research of human behavioral decision making processes to Jan. 196
Institute of Science and Technology Progress report, 15 Apr. 1969 - 15 Apr. 1970
Applications of decision making, probability theory, and multi-level inference systems to aerospace information processin
Apparatus for damping operator induced oscillations of a controlled system
Flight control-related apparatus for damping operator induced oscillations of a controlled system responding to an operator controlled signal is described. The device utilizes a lag-lead filter for frequency and amplitude estimation of the control input, and a rectification and smoothing filter for producing a signal proportional to the absolute value of the frequency and amplitude estimate for use in suppression of the control system output signal. In one embodiment, this is accomplished by computing a correction signal in a correction generating section. In a second embodiment, a second rectification and smoothing filter produces a signal proportional to the absolute value of the controlled input signal. A ratio of the outputs of the first and second rectification and smoothing filters is then used in a generator to generate a gain factor k sub q for the control system to reduce the gain of the output signal of the control system, thereby to provide a damped control output signal without rate limiting the controlled element
The story of deregulation in the dairy industry
The deregulation of dairy marketing that occurred on 1 July 2000 is a fascinating case study in microeconomic reform. The role of interacting industry and institutional features in the movement to deregulation is explained, with political realities being recognised. A key part of the deregulation bundle was an unprecedented âstructural adjustmentâ package valued at about one and a half billion dollars (in 1998â1999). Questions are raised about the rationale for this package, the process of determining it and the means of funding it.Agribusiness, Livestock Production/Industries,
Computational aeroelasticity challenges and resources
In the past decade, there has been much activity in the development of computational methods for the analysis of unsteady transonic aerodynamics about airfoils and wings. Significant features are illustrated which must be addressed in the treatment of computational transonic unsteady aerodynamics. The flow regimes for an aircraft on a plot of lift coefficient vs. Mach number are indicated. The sequence of events occurring in air combat maneuvers are illustrated. And further features of transonic flutter are illustrated. Also illustrated are several types of aeroelastic response which were encountered and which offer challenges for computational methods. The four cases illustrate problem areas encountered near the boundaries of aircraft envelopes, as operating condition change from high speed, low angle conditions to lower speed, higher angle conditions
A forebody design technique for highly integrated bottom-mounted scramjets with application to a hypersonic research airplane
An inviscid technique for designing forebodies which produce uniformly precompressed flows at the inlet entrance for bottom-mounted scramjets has been developed so that geometric constraints resulting from design trade-offs can be effectively evaluated. The flow fields resulting from several forebody designs generated in support of a hypersonic research airplane conceptual design study have been analyzed in detail with three-dimensional characteristics calculations to verify the uniform flow conditions. For the designs analyzed, uniform flow is maintained over a wide range of flight conditions (Mach number equals 4 to 10; angle of attack equals 6 deg to 10 deg) corresponding to scramjet operation flight envelope of the research airplane
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