1,769 research outputs found

    On the role of articulatory prosodies in German message decoding

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    A theoretical framework for speech reduction is outlined in which 'coarticulation' and 'articulatory control' operate on sequences of 'opening-closing gestures' in linguistic and communicative settings, leading to suprasegmental properties - 'articulatory prosodies' - in the acoustic output. In linking this gestalt perspective in speech production to the role of phonetic detail in speech understanding, this paper reports on perception experiments that test listeners' reactions to varying extension of an 'articulatory prosody of palatality' in message identification. The point of departure for the experimental design was the German utterance ich kann Ihnen das ja mal sagen 'I can mention this to you' from the Kiel Corpus of Spontaneous Speech, which contains the palatalized stretch [k̟(h)ε̈n(j)n(j)əs] for the sequence of function words /kan i.n(kə)n das/ kann Ihnen das. The utterance also makes sense without the personal pronoun Ihnen. Systematic experimental variation has shown that the extent of palatality has a highly significant influence on the decoding of Ihnen and that the effect of nasal consonant duration depends on the extension of palatality. These results are discussed in a plea to base future speech perception research on a paradigm that makes the traditional segment-prosody divide more permeable, and moves away from the generally practised phoneme orientation

    Cheilostome Bryozoen

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    http://orcid.org/0000-0002-0540-6013This section describes the cheilostome bryozoan fauna from the Late Cretaceous of Saxony. H.B. Geinitz and A.E. von Reuss described 33 different cheilostome species from the Upper Cenomanian and the mid-Upper Turonian of Saxony, among which 18 new species. Revisions of the Cenomanian material provided by E. Voigt showed that this material included four cyclostome species and eight species that were not derived from Saxony, but subject to a confusion of the sampling locality. Our study of the material and of material collected by E. Voigt in the 20th century yields 23 cheilostome bryozoan species for the Cretaceous of Saxony (lower Cenomanian to lower Coniacian). One new genus, Hillmeropora, and five new species, “Akatopora” wilmseni, Hillmeropora pavonina, Onychocella saxoniae, “Onychocella” barbata and Wilbertopora ostiolatoides are described. Material of six species described by Geinitz and Reuss was not found, thus their identity remaining obscure. “Eschara angustata Geinitz, 1842” is preserved as internal moulds and can therefore not be classified down to genus and species level. Furthermore, the badly preserved material of “Cellepora strehlensis”, figured by Geinitz (1846), “Eschara lineolata Reuss, 1874” and “Vincularia plauensis” sensu Reuss (1874) does not allow a proper classification.This is an OpenAccess article

    Glaciers in Equilibrium, McMurdo Dry Valleys, Antarctica

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    The McMurdo Dry Valleys are a cold, dry polar desert and the alpine glaciers therein exhibit small annual and seasonal mass balances, ofte

    Modeling a thermomechanical NC-simulation

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    This paper presents a method for a NC-Simulation based prediction of shape errors caused by thermal expansions in machining of complex workpieces. In the first part of the paper the basic approach of modeling a thermomechanical NC-Simulation for a faster and more precise process simulation is shown. Therefore, a fast dexel based material removal simulation including process models for calculation of localized heat flux and forces is linked to a FE model for simulation of thermal conduction in the workpiece. Interdependencies of thermal process and workpiece conditions are considered by a closed simulation loop. In the second part of the paper the modeling of each component is explained. To consider thermomechanical effects in material removal simulation the dexel based workpiece model is extended by additional information like temperature and deformation in every dexel. An inverse projection of the workpiece deformation on a triangulated tool model allows consideration this effect by deformation of the tool model. Thereby, a realistic shape of the workpiece can be simulated. In addition, the current cutting conditions like area of undeformed chip-thickness or contact length are changed. This results in diversified cutting forces and heat fluxes. For a realistic simulation of the thermal conduction the dimensions of the FE model have to be adapted by a time dependent virtual domain method. In the last part of the paper, results of the simulation are compared to measured data. The comparison shows that process temperatures in different workpiece areas are predicted accurately

    Prediction of temperature induced shape deviations in dry milling

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    In this paper a model for a simulation based prediction of temperature induced shape deviations in dry milling is presented. A closed loop between Boolean material removal, process forces, heat flux and thermoelastic deformation is established. Therefore, an efficient dexel based machining simulation is extended by a contact zone analysis to model the local workpiece load. Based on the computed contact zone the cutting forces and heat flux are calculated using a semi-empirical process model. For a detailed consideration of the loads they are discretized and localized on the dexel-represented workpiece surface. A projection of the localized workpiece loads on the boundary of the finite element domain, taking into account the Boolean material removal during the process, allows the calculation of the current temperature and deformation of the workpiece. By transforming these thermomechanical characteristics back to the dexel-model a consideration in the machining simulation is possible. An extended contact zone analysis is developed for the prediction of the localized shape deviations. Finally, the results of the simulation are compared with measured data. The comparison shows that workpiece temperatures, workpiece deformation and shape deviations in different workpiece areas are predicted accurately.DFG/DE 447/90-2DFG/MA 1657/21-

    At the edge of intonation: the interplay of utterance-final F0 movements and voiceless fricative sounds

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    The paper is concerned with the 'edge of intonation' in a twofold sense. It focuses on utterance-final F0 movements and crosses the traditional segment-prosody divide by investigating the interplay of F0 and voiceless fricatives in speech production. An experiment was performed for German with four types of voiceless fricatives: /f/, /s/, /ʃ/ and /x/. They were elicited with scripted dialogues in the contexts of terminal falling statement and high rising question intonations. Acoustic analyses show that fricatives concluding the high rising question intonations had higher mean centres of gravity (CoGs), larger CoG ranges and higher noise energy levels than fricatives concluding the terminal falling statement intonations. The different spectral-energy patterns are suitable to induce percepts of a high 'aperiodic pitch' at the end of the questions and of a low 'aperiodic pitch' at the end of the statements. The results are discussed with regard to the possible existence of 'segmental intonation' and its implication for F0 truncation and the segment-prosody dichotomy, in which segments are the alleged troublemakers for the production and perception of intonation

    Dialogue as Moral Paradigm: Paths Toward Intercultural Transformation

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    The Council of Europe’s 2008 White Paper on Intercultural Dialogue: ‘living together as equals in dignity’ points to the need for shared values upon which intercultural dialogue might rest. In order, however, to overcome the monologic separateness that threatens community, we must educate ourselves to recognize the dialogism of our humanity and to engage in deep encounters with others with a mature skepticism of all dogmatisms, including our own. In order to aid us in reaching the necessary insight, the author calls upon Bakhtin’s ideas of the dialogism of every utterance and of the unity and heteroglossia of language, Gadamer’s hermeneutical experience that shakes us loose from what we think we know, and Levinas’s description of that transcendent ideal of a dialogue beyond reciprocity. These perspectives break open our certainty that tribalism and individualism are fundamental, placing them instead as secondary phenomena that, though powerful, pronounce neither the initial nor the final word on our life together

    From Teamchef Arminius to Hermann Junior: glocalised discourse about a national foundation myth

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    If for much of the nineteenth and twentieth centuries, the ‘Battle of the Teutoburg Forest’, fought in 9 CE between Roman armies and Germanic tribes, was predominantly a reference point for nationalist and chauvinist discourses in Germany, the first decade of the twenty-first century has seen attempts to link public remembrance with local/regional identities on the one hand and international/intercultural contact on the other. In the run up to and during the ‘anniversary year’ of 2009, German media, sports institutions and various other official institutions articulating tourist, economic and political interests attempted to create a new ‘glocalised’ version of the public memory of the Teutoburg battle. Combining methods of Cognitive Linguistics and Critical Discourse Analysis, the paper analyses the narrative and argumentative topoi employed in this re-orientation of public memory, with a special emphasis on hybrid, post-national identity-construction. Das zweitausendjährige Gedenkjahr der „Schlacht im Teutoburger Wald“ im Jahr 2009 bot eine günstige Gelegenheit, die bis in die zweite Hälfte des 20. Jahrhunderts dominante Tradition nationalistisch–chauvinistischer Deutungen des Sieges von germanischen Stämmen über drei römische Legionen zu korrigieren und zu überwinden. Der Aufsatz analysiert mit Hilfe diskurslinguistischer Methoden die Anstrengungen regionaler Institutionen und Medien, die nationale Vereinnahmung des historischen Gedenkens kritisch zu thematisieren sowie neue, zum eine lokal situierte, zum andern international orientierte Identifikationsangebote anzubieten. Die Analyse zeigt, dass solche „de-nationalisierten“ Identifikationsangebote zwar teilweise auch früher verwendet wurden, aber heutzutage rekontextualisiert und auf innovative Weise in den Vordergrund gestellt werden

    The antigenicity and cholesteroid nature of mycolic acids determined by recombinant chicken antibodies

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    <div><p>Mycolic acids (MA) are major, species-specific lipid components of Mycobacteria and related genera. In <i>Mycobacterium tuberculosis</i>, it is made up of alpha-, methoxy- and keto-MA, each with specific biological functions and conformational characteristics. Antibodies in tuberculosis (TB) patient sera respond differently towards the three MA classes and were reported to cross-react with cholesterol. To understand the antigenicity and cholesterol cross-reactivity of MA, we generated three different chicken -derived phage-displayed single-chain variable fragments (scFv) that reacted similarly towards the natural mixture of MA, but the first recognized all three classes of chemically synthetic MAs, the second only the two oxygenated types of MAs and the third only methoxy MA. The cholesterol cross-reactivity was investigated after grafting each of the three scFv types onto two configurations of constant chain domains–CH1-4 and CH2-4. Weak but significant cross-reactivity with cholesterol was found only with CH2-4 versions, notably those two that were also able to recognize the <i>trans</i>-keto MA. The cholesteroid nature of mycobacterial mycolic acids therefore seems to be determined by the <i>trans</i>-keto MA subclass. The significantly weaker binding to cholesterol in comparison to MA confirms the potential TB diagnostic application of these antibodies.</p></div
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