2,935 research outputs found
Brief von Max Streit an Josef Steindl
No full textBRIEF VON MAX STREIT AN JOSEF STEINDL
Brief von Max Streit an Josef Steindl ([1]
Interview with Henry F. and Marie M. Streit
No full textAn interview with Henry Francis Hank Streit (1906-1993) and Marie Margaret Nusse Streit (1907-1995) about life during the Great Depression. Audio is on tape MS016_13-3_71-099https://scholars.fhsu.edu/koh/1149/thumbnail.jp
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[Flirting With Power: Dr. George Edwards interview, 1 of 2]
No full textVideo footage from the Jo Streit Film Footage Collection consisting of original Betacam footage from filmmaker Jo Streit's documentary "Flirting with Power." Footage covers an interview with Dr. George C. Edwards III, director of the Center for Presidential Studies at Texas A&M University
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[Flirting With Power: Dr. George Edwards interview, 2 of 2]
No full textVideo footage from the Jo Streit Film Footage Collection consisting of original Betacam footage from filmmaker Jo Streit's documentary "Flirting with Power." Footage covers an interview with Dr. George C. Edwards III, director of the Center for Presidential Studies at Texas A&M University
Facultatis iuridicae decanus Jo. Philippus Streit, I.U.D. eminentissimi principis electoris Moguntini consiliarius regiminis. l.b.s
No full textElektronische Reproduktion von: Facultatis Juridicæ Decanus Io. Philippus Streit/ I.V.D. Eminentissimi Principis Electoris Moguntini Consiliarius Regiminis. L.B.S. - Erfordiæ : Typis Groschianis, Acad. Typogr., [1722]. - 8 ungezählte Seiten ; 4°. -
Standort: Universität Marburg, Universitätsbibliothek. -
Signatur: VIII B 331 db, 5. -
Fingerprint: sent i-o- isr- m-am C 1722Q. -
Werktitel: Facultatis iuridicae decanus Jo. Philippus Streit, I.U.D. eminentissimi principis electoris Moguntini consiliarius regiminis. l.b.s. -
Anmerkung: Einladung zur jurist. Disputation von Philipp Jakob Dieffenbach, 10. Juni 1722. - Mit Vita Dieffenbachs. -
Erscheinungsjahr nach der Datierung am Textende angenommen: "Publicatum sub sigillo Facultatis Juridicæ 7. Junii MDCCXII.". -
Bibliographischer Nachweis: Verzeichnis der im deutschen Sprachbereich erschienenen Drucke des 18. Jahrhunderts, 13192213-001. - (Hassiaca)
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Wilson's map operations on regulat dessins and cyclotomic fields of definition
No full textDessins d’enfants can be seen as bipartite graphs embedded in compact orientable surfaces. According to Grothendieck and others, a dessin uniquely determines a complex structure on the surface, even an algebraic structure as a projective algebraic curve defined over a number field. Combinatorial properties of the dessin should therefore determine the equations and also structural properties of the curve, such as the field of moduli or the field of definition. However, apart from a few series of examples, very few general results concerning such correspondences are known. As a step in this direction, we present a graph theoretic characterisation of certain quasiplatonic curves defined over cyclotomic fields, based on Wilson's operations on maps: these leave invariant the graph but change the cyclic ordering of edges around the vertices, therefore they change the embeddings, and hence the dessins, and hence the conformal and algebraic structure of the underlying curves. Under suitable assumptions, satisfied by many series of regular dessins, these changes coincide with the effect of Galois conjugation. This coincidence allows one to draw conclusions about Galois orbits and fields of definition of dessins. The possibilities afforded by these techniques, and their limitations, are illustrated by a new look at some known examples and a study of dessins based on the regular embeddings of complete graphs. <br/
Multi-Mode Wireless Videophony
No full textA comparative study of arbitrarily programmable, but fixed-rate videophone codecs using quarter common intermediate format (QCIF) video sequences scanned at 10 frames/s is offered. These codecs were designed to allow direct replacement of mobile radio voice codecs in second generation wireless systems, such as the Pan-European GSM, the American IS-54 and IS-95 as well as the Japanese systems, operating at 13, 8, 9.6 and 6.7 kbps, respectively, although better video quality is maintained over higher-rate, 32kbps cordless systems, such as the Japanese PHS and the European DECT and CT2 systems. Best overall performance was achieved by our vector-quantised codecs, followed by the discrete cosine transformed and the quadtree-based schemes, which were characterised by the bit allocation schemes of Table 1. The associated video Peak Signal-to-Noise Ratio (PSNR) was around 30 dB, while the subjective quality can be viewed under http://www-mobile.ecs.soton.ac.uk. A range of multimode wireless transceivers were also proposed, which are characterised by Table 2
Dual-Mode Vector-Quantised Low-Rate Cordless Videophone Systems for Indoors and Outdoors Applications
No full textDual-mode reconfigurable wireless videophone transceivers are proposed for noise-, rather than interference-limited indoors and outdoors applications and their video quality, bit rate, robustness, and complexity issues are analyzed. A suite of fixed, but arbitrarily programmable low-rate, perceptually weighted vector quantized (VQ) codecs with and without run-length compression (RLC) are contrived for quarter common intermediate format (QCIF) videophone sequences. The 11.36-kb/s Codec 1 is Bose–Chaudhuri–Hochquenghem (BCH) (127,71,9) coded to a rate of 20.32 kb/s and this arrangement is comparatively studied along with the 8-kb/s Codec 2 and BCH(127,50,13) scheme, which has the same 20.32-kb/s overall rate. The source-sensitivity matched Systems 1–6 characterized in Table IV were contrived to comparatively study the range of system design options. For example, using Codec 1 in System 1 and coherent pilot symbol assisted 16-level quadrature amplitude modulation (16-PSAQAM), an overall signaling rate of 9 kBd was yielded, if the noise-limited channel had a signal-to-noise ratio (SNR) in excess of about 22 dB in the vicinity of the basestation or in indoors scenarios. In contrast, over lower quality outdoors channels near the fringes of the cell, the more robust 4-QAM mode of operation had to be invoked, which required twice as many time slots to accommodate the resulting 18-kBd stream and hence, reduced the total number of users supported. The robustness of Systems 2–4, and 6 was increased using automatic repeat requests (ARQ), again, inevitably reducing the number of users supported, which was between 6 and 16. In a bandwidth of 200 kHz, similarly to the Pan-European GSM mobile radio system’s speech channel, using systems 1, 3, 4, or 5, for example, 16 and eight videophone users can be supported in the 16- and 4-QAM modes, respectively, while in dual-mode cells the number of users is between eight and 16. The basic system characteristics are highlighted in Table IV. Index Terms—Fixed-rate video coding, QAM video communications, vector-quantized video coding, wireless video telephony
Gibt es einen Zusammenhang zwischen der Diversität der Baumschicht und der Bodenvegetation? - Untersuchungen in Buchen-Edellaubholz-Mischwäldern des Göttinger Waldes (Süd-Niedersachsen, Deutschland)
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