3,105 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
Full text linkIn 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
Garfit J.H.
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/342057Notes: from Garfit J. H. A Few Words on the Physiology of Woman…author of "A Few Words on Zoology", "A Short Account of the Giraffe?". Boston, 1886. Pedomorhism of Female - Quotes Darwin. Cites page 13 [Whilst commenting on beauty, I would remark, does not our pity for an object sometimes cause admiration for it? and is not helplessness often associated with pity? And may not this be one reason why we often think infants so beautiful? Perhaps this may apply in a modified from occasionally to woman...may not her quasi-youth contribute to it?] Reference: Garfit, J H 1886, A few words on the physiology of woman: being a critical analysis of her outward form, her beauty, and her mental powers, Dingwall & Wilson, Boston.
Back of card is blank.138509
item: [2014.0039.00220] "Garfit J.H.
Bijdrage tot de kennis van capillaire verschijnselen in verband met de heterogeniteit van den grond
Full text linkThe negative value of capillary pressure (D) was defined and its practical significance considered. The results of former research on rate and final value for capillary uptake were discussed.The author constructed various meters for the measurement of capillary uptake. They were described and their dimensions and properties were compared with those used by other workers. The minimum and maximum values for D due to the heterogeneity of the soil material were tabulated for a series of sandy soils or soil fractions. These results were compared with those obtained in model experiments with perforated disks.A series of new concepts was defined, concerning the forms and properties of isolated water in the soil profile. The terms 'sejunction' and 'funicular' and 'pendular' water were discussed. Their importance was demonstrated by a series of model experiments with sand fractions of different size grades. The distribution functions for the pores of these sands were calculated and compared with the experimental results. A few calculated examples were discussed on the importance of the isolated water for aeration of soil. Conclusions were derived for the presence of cracks in the soil profile and the influence of the distribution of rainfall on the amount of available water to plants.</p
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