3,580 research outputs found
Revelations. The epistle of Nathan the Wise ...
No full textAttributed to J.H. Donlevy by whom copyright was secured.Cover-title.Mode of access: Internet
Telling stories: a metagame description of a conflict
No full textThis paper describes the use of metagame analysis to describe and explore a conflict situation. The analysis was carried out by the author, who was associated with one of the parties in the conflict, for his own benefit. A full description of the analysis is provided. A particular characteristic of the situation was that it was not possible to specify preferences for scenarios for any of the actors with a reasonable degree of confidence. This made the standard metagame analysis approach unworkable, and an alternative approach, involving the development of stories describing a variety of possible future events, was used instead
Author Correction: Long-range chiral exchange interaction in synthetic antiferromagnets
No full textIn the version of this Article originally published, the sentence ‘D.-S.H. wrote the paper with K.L., J.H. and M.K.’ in the author contributions was incorrect; it should have read ‘D.-S.H. wrote the paper with K.L., J.H., M.-H.J. and M.K.’ This has been corrected in the online versions of the Article
Concrete Flow in Diaphragm Wall Panels: A Full-Scale In-Situ Test
No full textFlow processes, taking place during the concreting of diaphragm wall panels (D-wall panels), are of great importance for the quality of the wall. During this phase, the bentonite, present in the excavated trench, should be completely replaced by concrete in a controlled way. In literature several cases are described in which this process resulted in bentonite inclusions in the panel. These inclusions often lead to severe problems, like leakages, for the building pit to be excavated within the diaphragm wall panels. Beside the risks for the building pit, leakages caused by bentonite inclusions can also have large consequences for nearby constructions. In this article, set up and results of a full-scale diaphragm wall test are described. Conclusions are drawn with regard to the influence of several parameters on the flow process and subsequently on the quality of the wall and the risk on bentonite inclusions
[A collection of tracts regarding Tract no. 90 of Newman's Tracts for the times : including the text of Tract 90.
No full textTracts for the times, no. 90 : remarks on certain passages in the Thirty-nine articles / by J.H. Newman -- A letter addressed to R.W. Jelf in explanation of Tract no. 90 / by the author -- A letter to Richard, Lord Bishop of Oxford, on occasion of no. 90 / by J.H. Newman -- A few words in support of no. 90 / by W.G. Ward -- A few more words in support of no. 90 / by W.G. Ward -- Appendix to a few more words in support of no. 90 / by W.G. Ward -- The subject of tract XC examined / by F. Oakeley -- The doctrine of the Catholic Church in England on the Holy Eucharist.Mode of access: Internet
Reliable methods for predicting the sound from clustered rocket engines
No full textHigh area ratio rocket engines generate strong vibro-acoustic loads primarily during transient operations, like start-up and shut-down of the engine. These loads can adversely affect the launch vehicle and its payload. Thus, an accurate prediction of the loads produced during engine start-up is pertinent to the safety and reliability of the launch vehicle. The present work focuses on developing a robust framework for predicting these loads using laboratory scale rocket nozzles tested in the fully anechoic chamber at The Uni- versity of Texas at Austin. This encompasses corrections for the observer position relative to the prominent source region, as well as scaling factors to correct for geometric factors. The test campaign encompasses single, two, three and four nozzle clusters, as well as differences in nozzle geometry and operating conditions (nozzle pressure ratio)
Automatic trajectory tracking control of kites
No full textIn this thesis we present a novel solution to the kite trajectory tracking problem using an explicit control law. Compared to alternative approaches, such as model predictive control, our approach has three major advantages: a stability proof, ease of implementation, and minimal modeling requirements. The latter is especially important for control of flexible kites, which are hard to model accurately in a point-mass or rigid-body framework. Kites commonly have a single control input available for steering. We show how the differential-geometric notion of turning angle can be used as a one-dimensional representation of the kite trajectory, and how this leads to a single-input single-output tracking problem. In order to facilitate model inversion we linearize the turning angle dynamics in the steering control input, and apply energy methods to derive a stabilizing feedback law. We show how the zero-term of the linearization can be measured directly using on-board sensors, and how in this way the control law comes to depend on the control derivatives of the aerodynamic kite model only. The controller adapts the estimates of these control derivatives based on tracking performance. Repeated simulations with a point-mass model show our control approach to be robust against turbulence, and simulations with a multi-body model of a flexible kite validate our modeling assumptions.Applied MathematicsDelft Institute of Applied MathematicsElectrical Engineering, Mathematics and Computer Scienc
Blithe Spirit, 1975 Dress Rehearsal Scenes 9
No full textNoel Coward\u27s Blithe Spirit, a comedic play, was presented by the advanced drama lab on May 26-28, 1975 under the direction of Mrs. J.H. LeFevre and designed by Carlton Ward. Shown cast members perform on stage during a dress rehearsal. (circa May 26, 1975)https://digitalcommons.jsu.edu/lib_ac_histimg_1970/3804/thumbnail.jp
Blithe Spirit, 1975 Dress Rehearsal Scenes 10
No full textNoel Coward\u27s Blithe Spirit, a comedic play, was presented by the advanced drama lab on May 26-28, 1975 under the direction of Mrs. J.H. LeFevre and designed by Carlton Ward. Shown cast members perform on stage during a dress rehearsal. (circa May 26, 1975)https://digitalcommons.jsu.edu/lib_ac_histimg_1970/3805/thumbnail.jp
Blithe Spirit, 1975 Dress Rehearsal Scenes 7
No full textNoel Coward\u27s Blithe Spirit, a comedic play, was presented by the advanced drama lab on May 26-28, 1975 under the direction of Mrs. J.H. LeFevre and designed by Carlton Ward. Shown cast members perform on stage during a dress rehearsal. (circa May 26, 1975)https://digitalcommons.jsu.edu/lib_ac_histimg_1970/3802/thumbnail.jp
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