1,207 research outputs found
Spatial variations in the geochemistry of Pleistocone andesites in northern Taiwan (in Chinese with English abstract)
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A funeral handkerchief [electronic resource] : in two parts : I. Part, containing arguments to comfort us at death of friends, II. Part, containing several uses which we ought to make of such losses : to which is added, Three sermons preached at Coventry /
No full textThe 2nd part has special t.p., continuous paging, and imprint: London : Printed for the author, 1691.Errata: prelim. p. [15].Imperfect: t.p. to the "Three sermons preached at Coventry" lacking.Includes bibliographical references.Reproduction of original in Huntington Library.WingElectronic reproduction
Design and performance of an open jet wind tunnel for aero-acoustic measurement
Full text linkThis paper presents the design and performance of an open jet, blow down wind tunnel that was newly commissioned in the anechoic chamber at the ISVR, University of Southampton, UK. This wind tunnel is intended for the measurement of airfoil trailing edge self-noise but can be extended to other aeroacoustic applications. With the primary objectives of achieving acoustically quiet and low turbulence air jet up to 120 m/s through a 0.15 m × 0.45 m nozzle, several novel noise and flow control techniques were implemented in the design. Both the acoustical and aerodynamic performances of the open jet wind tunnel were examined in detail after its fabrication. It is found that the background noise of the facility is adequately low for a wide range of exit jet velocity. The potential core of the free jet is characterized by a low turbulence level of about 0.1%. Benchmark tests by submerging a NACA0012 airfoil with tripped and untripped boundary layers at 0° and 10° angles of attack respectively into the potential core of the free jet were carried out. It was confirmed that the radiating airfoil trailing edge self-noise has levels significantly above the rig noise over a wide range of frequencies. The low noise and low turbulence characteristics of this open jet wind tunnel are comparable to the best facilities in the world, and for its size it is believed to be the first of its kind in the UK
Voice Compression and Communications: Principles and Applications for Fixes and Wireless Channels
No full textUp-to-date, expert coverage of topics in wireless voice communications Voice communication is the most important facet of mobile radio service. Even when the predicted surge of wireless data and Internet services becomes a reality, voice will remain the most natural means of human communication. Voice Compression and Communications details issues in wireless voice communications and treats compression, channel coding, and wireless transmission as a joint subject. Part I covers background material, whereas Part II provides detailed information on both proprietary and standardized analysis-by-synthesis codecs, including the speech codecs of virtually all existing wireline-based and wireless systems. Parts III and IV discuss mainly research-based wideband, audio, as well as very low-rate schemes likely to find their way into future standards. Voice Compression and Communications describes fundamental concepts in a non-mathematical way early in the book for those with only a background knowledge of signal processing and communications. More advanced readers will find detailed discussions of theoretical principles, future concepts, and solutions to various specific wireless voice communications problems
Book Review: Khlynina T.P., Krinko E.F. History, Politics and Nation Building in the North Caucasus: Monograph. – Rostov-on-Don, Izd-vo YuNTs RAN, 2014. – 434 p.
Full text linkThe author of the review reveals the research approach of the monograph’s authors – T.P. Khlynina and E.F. Krinko to the analysis of the interconnection of historical memory, politics and nation building in the North Caucasus. The author also reveals the argumentation of authors’ evaluations of Soviet nation building in the region, interactions of state power with ethnopolitical movements, methods of historical memory institutionalization in the North Caucasus
Remarks upon the occasional paper, number VIII [electronic resource] : in a letter to the author.
No full textCaption title.Place and date of publicatin suggested by Wing."The 'author' is Richard Willis"--NUC pre-1956 imprints.Imperfect: t.p. stained with loss of print.Reproduction of original in the Huntington Library.WingElectronic reproduction
Structural characteristics and possible boundary between the Taiwan collision zone and the Ryukyu arc-trench system
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