1,733 research outputs found
At the edge of intonation: the interplay of utterance-final F0 movements and voiceless fricative sounds
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
From Number Crunching To Organizational Leadership: Can Distance Education Adequately Handle The Range Of Graduate Business Classes?
With distance education delivery technology improving almost continuously, many Universities are seeking out distance education opportunities to expand their programs. We seek to examine the effectiveness of the distance delivery approach across the range of types of courses offered in MBA programs – from the organizational leadership classes to the more quantitative “number crunching” classes. Student performance in several types of MBA courses was evaluated as a result of presenting the same material on-campus (synchronously) and via distance education (asynchronously) in three different kinds of graduate business courses; a course in organizational leadership, an analytical course in managerial economics, and a quantitative methods course. A number of individual variables (e.g., GMAT scores, undergraduate GPA) were included as explanatory factors regarding student performance. Using multiple hierarchical regression analysis, the asynchronous distance delivery model was determined to have no adverse impact on student performance across all of these different types of MBA courses, indicating that indeed distance education techniques can adequately handle this broad range of graduate business classes
Verhaltensprobleme in alternativen Legehennenhaltungen
In alternativen Haltungssystemen für Legehennen stellen Federpicken und Kannibalismus große Probleme dar. Aus der Literatur und Praxis besteht der Hinweis, dass ungünstige Aufzuchtbedingungen Hauptrisikofaktoren für das Auftreten dieser Verhaltensstörungen während der Legeperiode darstellen könnten. Hypothesenkataloge mit möglichen Risikofaktoren für Federpicken und Kannibalismus wurden erstellt und durch Berater und Wissenschaftler bewertet
Dialogue as Moral Paradigm: Paths Toward Intercultural Transformation
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
Phenomens of rolling contact in paper calendering
In soft calenders synthetic roll covers are "state of the art", without knowing their detailed rolling contact behavior and their phenomenological effects to gloss and smoothness of paper. Complex interactions of process and material parameters lead to time consuming adjustments of the machine settings. Regarding the interacting material parameters the mechanical paper properties are as important as the elastomer cover properties of the rollers. This challenged coupling of the threesome paper, cover and process typifies a limit for new innovations in calendering. That is why present development objectives in calendering for example to higher calendering temperatures and higher process velocities have to be tested in practice as black box solutions concerning their effects.Present research activities are focusing on the thermo mechanics in the interaction of process and material parameters of the rolling contact of the calendering nip. With advanced knowledge on the paper properties [2, 4], with the theory of rolling contact and with the knowledge of the influence on runnability and printability parameters, it is possible to discuss phenomenological rolling contact effects on a macroscopic level. The results point out that the physical attributes of roll cover material and of paper material have to be analyzed along with the process parameters in order to achieve improvements in calendering.The investigated interactions motivate a new evaluation of the calendering process under consideration of mechanic, thermal, hygroscopic, visco-elastic and rolling contact effects. This point of view is close to reality and permits the detection of physical interactions in the calender nip. From these detected dependencies we can formulate conclusions to gloss and smoothness behavior as well as to the other printability and runnability parameters.To reduce time consuming process optimization in production, precise details on optimal machine settings in the process can be delivered. Although details to paper and roll cover properties for calendering can be given by identifying the physical interactions in the rollers' nip. Knowledge of these interactions will reveal the basic calender processes
LEDAkem: a post-quantum key encapsulation mechanism based on QC-LDPC codes
This work presents a new code-based key encapsulation mechanism (KEM) called
LEDAkem. It is built on the Niederreiter cryptosystem and relies on
quasi-cyclic low-density parity-check codes as secret codes, providing high
decoding speeds and compact keypairs. LEDAkem uses ephemeral keys to foil known
statistical attacks, and takes advantage of a new decoding algorithm that
provides faster decoding than the classical bit-flipping decoder commonly
adopted in this kind of systems. The main attacks against LEDAkem are
investigated, taking into account quantum speedups. Some instances of LEDAkem
are designed to achieve different security levels against classical and quantum
computers. Some performance figures obtained through an efficient C99
implementation of LEDAkem are provided.Comment: 21 pages, 3 table
From Teamchef Arminius to Hermann Junior: glocalised discourse about a national foundation myth
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
F1: An Eight Channel Time-to-Digital Converter Chip for High Rate Experiments
A new TDC chip has been developed for the COMPASS experiment at CERN. The resulting ASIC offers an unprecedented degree of flexibility and functionality. Its capability to handle highest hit and trigger input rates as well as its low power consumption makes it an ideal tool for future collider and fixed target experiments. First front-end boards equipped with the F1 chip have been used recently at testbeam experiments at CERN. A functional description and specification for this new TDC chip is presented.A new TDC chip has been developed for the COMPASS experiment at CERN. The resulting ASIC offers an unprecedented degree of flexibility and functionality. Its capability to handle highest hit and trigger input rates as well as its low power consumption makes it an ideal tool for future collider and fixed target experiments. First front-end boards equipped with the F1 chip have been used recently at testbeam experiments at CERN. A functional description and specification for this new TDC chip is presented
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