4,563 research outputs found
Families of spherical surfaces and harmonic maps
We study singularities of constant positive Gaussian curvature surfaces and
determine the way they bifurcate in generic 1-parameter families of such
surfaces. We construct the bifurcations explicitly using loop group methods.
Constant Gaussian curvature surfaces correspond to harmonic maps, and we
examine the relationship between the two types of maps and their singularities.
Finally, we determine which finitely A-determined map-germs from the plane to
the plane can be represented by harmonic maps.Comment: 30 pages, 7 figures. Version 2: substantial revision compared with
version 1. The results are essentially the same, but some of the arguments
are improved or correcte
BartĂłk BĂ©la hangszeres magyar nĂ©pzenegyűjtĂ©se Ă©s a BartĂłk-rend hangszeres fĂĽggelĂ©kĂ©nek feldolgozása, elĹ‘kĂ©szĂtĂ©se kritikai forráskiadásra = Elaboration of BĂ©la BartĂłk`s Hungarian instrumental folk music-collection and of the supplement of BartĂłk-system for a critical source-edition
EredmĂ©ny az alábbi fĹ‘bb munkák elvĂ©gzĂ©se után: - a forrásanyag összegyűjtĂ©se, az adatok pontosĂtása, feldolgozása, a BartĂłk javĂtásai miatt áthĂşzott kották dallamfolyamatainak megállapĂtása, a kĂ©ziratokrĂłl olvashatĂł kották kĂ©szĂtĂ©se, ha volt fonográffelvĂ©tel, azok meghallgatása, a hiányzĂł lejegyzĂ©sek pĂłtlása, a támlapok Ă©s a gyűjtĹ‘fĂĽzetek összehasonlĂtása (e munka mĂ©g nem fejezĹ‘dött be), a hangszeres dallamok vokális dallampárhuzamainak összegyűjtĂ©se, a vonatkozĂł BartĂłk szakirodalom feldolgozása, a már kiadott dallamok kigyűjtĂ©se, a kottagrafikák elkĂ©szĂttetĂ©se, ellenĹ‘rzĂ©se (nĂ©melyik kottáé többszöri fordulĂłval), összessĂ©gĂ©ben a kötet kiadásra elĹ‘kĂ©szĂtĂ©se. VĂ©geredmnĂ©ny: 200 kotta (majdnem 1000 kottasor) grafikájának elkĂ©szĂttetĂ©se, a tĂ©ma több rĂ©szletĂ©nek konferencia- ill. tanulmány formájĂş bemutatása, vĂ©gĂĽl a Balassi KiadĂłval 2006-ban fölvette a kötetet 2007. Ă©vi kiadási tervĂ©be. A kottákkal, jegyzetekkel, fakszimilĂ©kkel, fĂ©nykĂ©pekkel, tanulmánnyal stb. kb. 300-350 oldal terjedelműre becsĂĽlt könyv kiadásának feltĂ©tele a kiadĂł által elnyert pályázat. | Results after the following main works: collecting together the source-material of BartĂłk and others, defining the material, copying the BartĂłk's revised and for this nearly illegible handwritings, hearing the phonograpy cylinders and making new transcriptions, comparing the transcriptions on baseshets and in the notices (collecting books), collecting vocal variant to the instrumental melodies, working up the BartĂłk literature, finishing and revising the notes with notes graphic, alltogether preparing the the book for publishing. Finally: working up the BartĂłk's instrumental fieldwork and his system have been completed. There are ready 200 notes, nearly 1000 melody-lines on notes-grafique with the newest Finale programm and with corrections. The unknown material has been presentad on conferences and in studies, finally: the Balassi Publishing House (Budapest) has interest for this work and intended publish the book in 2007
A Product Shape Congruity Measure via Entropy in Shape Scale Space
Product shape is one of the factors that trigger preference decisions of
customers. Congruity of shape elements and deformation of shape from the
prototype are two factors that are found to influence aesthetic response, hence
preference. We propose a measure to indirectly quantify congruity of different
parts of the shape and the degree to which the parts deviate from a sphere,
i.e. our choice of the prototype, without explicitly defining parts and their
relations. The basic signals and systems concept that we use is the entropy.
Our measure attains its lowest value for a volume enclosed by a sphere. On one
hand, deformations from the prototype cause an increase in the measure. On the
other hand, as deformations create congruent parts, our measure decreases due
to the attained harmony. Our preliminary experimental results are consistent
with our expectations.Comment: Proceedings of EUSIPCO 2017 Satellite Workshops, Corresponding
Workshop: Creative Design and Advanced Manufacturing: An emerging application
area for Signals and System
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