3,917 research outputs found
Author Attributions in Medieval Text Collections: An Exploration
No full textThis article examines the role and function of author attributions in multi-text manuscripts containing Dutch, English, French or German short verse narratives. The findings represent one strand of the investigations undertaken by the cross-European project ‘The Dynamics of the Medieval Manuscript’, which analysed the dissemination of short verse narratives and the principles of organisation underlying the compilation of text collections. Whilst short verse narratives are more commonly disseminated anonymously, there are manuscripts in which authorship is repeatedly attributed to a text or corpus. Through six case studies, this article explores medieval concepts of authorship and how they relate to constructions of authority, whether regarding an empirical figure or a literary construction. In addition, it looks at how authorship plays a role in manuscript compilation, and at the effects of attributions (by author and/or compiler) on reception. The case studies include manuscripts from the thirteenth to fifteenth centuries, produced in a range of social and cultural contexts, and featuring some of the most important European authors of short verse narratives: Rutebeuf, Baudouin de Condé, Der Striker, Konrad von Würzberg, Willem of Hildegaersberch, and Geoffrey Chaucer. The preliminary findings contribute to our understanding of author attributions in text collections from across northern Europe and point towards future lines of enquiry into the role of authorship in medieval textual dissemination
The Stark effect in the molecular spectrum of hydrogen.
No full textSo far as atomic spectra are concerned the study of the Stark effect may be said to be well established both theoretically and experimentally in most of its fundamental features. The equivalent ls not true in the ease of molecular spectra, for our knowledge of the effect of an external electric field upon a radiating molecule is at best only very meagre. This state of affairs is due largely to the fact that many atomic spectra exhibit large Stark displacementa in electric fields of the magnitude easily obtained in experiment, whereas most of the attempts to detect similar effects in band spectra have yielded negative results. [...
Batch Bayesian Learning of Large-Scale LS-SVMs Based on Low-rank Tensor Networks
No full textLeast Squares Support Vector Machines (LS-SVMs) are state-of-the-art learning algorithms that have been widely used for pattern recognition. The solution for an LS-SVM is found by solving a system of linear equations, which involves the computational complexity of O(N^3). When datasets get larger, solving LS-SVM problems with standard methods becomes burdensome or even unfeasible. The Tensor Train (TT) decomposition provides an approach to representing data in highly compressed formats without loss of accuracy. By converting vectors and matrices in the TT format, the storage and computational requirements can be greatly reduced. In this thesis, we develop a Bayesian learning method in the TT format to solve large-scale LS-SVM problems, which involves the computation of a matrix inverse. This method allows us to include the information we know about the model parameters in the prior distribution. As a result, we are able to obtain a probability distribution of the parameters, which enables us to construct confidence levels of the predictions. In the numerical experiment, we show that the developed method performs competitively with the current methods.Mechanical Engineering | Systems and Contro
Additive Manufacturing: Polymers Applicable for Laser Sintering (LS)
No full textAbstractAdditive Manufacturing (AM) is close to become a production technique changing the way of part fabrication in future. Enhanced complexity and personalized features are aimed. The expectations in AM for the future are enormous and betimes it is considered as kind of the next industrial revolution. Laser Sintering (LS) of polymer powders is one component of the AM production techniques. However materials successfully applicable to Laser Sintering (LS) are very limited today. The presentation picks up this topic and gives a short introduction on the material available today. Important factors of polymer powders, their significance for effective LS processing and analytical approaches to access those values are presented in the main part. Concurrently the exceptional position of polyamide 12 powders is this connection is outlined
Kvadratične Stark konstante neutralnih bakrenih i srebrnih spektralnih linija u Coulomb-ovoj aproksimaciji
No full textBy using the LS-coupling-Coulomb approximation, quadratic Stark constants were calculated for several excited energy levels from the alkali part of the term diagrams of cooper and silver atoms. Available experimental data for spectral lines were used for comparison.Upotrebom Coulomb-ove aproksimacije izračunate su kvadratične Stark konstante za nekoliko pobuđenih energetskih nivoa iz alkalijskog dijela term-dijagrama bakrenog i srebrnog atoma. Postignuto je zadovoljavajuće slaganje teoretskih vrijednosti s eksperimentalnim rezultatima za neke spektralne linije
The Social Cost-of-Living: Welfare Foundations and Estimation
No full textWe present a new class of social cost-of-living indices and a nonparametric framework for estimating these and other social cost-of- living indices. Common social cost-of-living indices can be understood as aggregator functions of approximations of individual cost-of-living indices. The Consumer Price Index (CPI) is the expenditure-weighted average of first-order approximations of each individual’s cost-of-living index. This is troubling for three reasons. First, it has not been shown to have a welfare economic foundation for the case where agents are heterogeneous (as they clearly are.) Second, it uses an expenditure-weighted average which downweights the experience of poor households relative to rich households. Finally, it uses only first-order approximations of each individual’s cost-of-living index, and thus ignores substitution effects. We propose a “common-scaling” social cost-of-living index, which is defined as the single scaling to everyone’s expenditure which holds social welfare constant across a price change. Our approach has an explicit social welfare foundation and allows us to choose the weights on the costs of rich and poor households. We also give a unique solution for the welfare function for the case where the weights are independent of household expenditure. A first order approximation of our social cost-of- living index nests as special cases commonly used indices such as the CPI. We also provide a nonparametric method for estimating second- order approximations (which account for substitution effects).Inflation, Social cost-of-living, Demand, Average Derivatives
Ansys Forming – Eine neue GUI für die Blechumformsimulation mit LS-Dyna
No full textDie Blechumformungsimulation hat sich in den letzten 25 Jahren stark weiterentwickelt. Die Simulation des gesamten Tiefziehprozesses einschließlich Beschneiden, Bördeln und Rückfedern ist bei den meisten Automobilherstellern und Werkzeugbaubetrieben ein Standardverfahren. Die Verwendung von LS-DYNA, einem der genauesten Löser für die Blechumformung, erfordert noch einiges an Expertenwissen, was die Verwendung für Methodenplaner in ihrer täglichen Arbeit erschwert. Aus diesem Grund hat Ansys eine spezielle Software für die Simulation der Blechumformung entwickelt: „Ansys Forming“. Ansys Forming ist eine benutzerfreundliche GUI zum Aufbau und zur Auswertung einer Blechumformungssimulation ohne Expertenkenntnisse von LS-DYNA
Ansys Forming – Eine neue GUI für die Blechumformsimulation mit LS-Dyna
No full textDie Blechumformungsimulation hat sich in den letzten 25 Jahren stark weiterentwickelt. Die Simulation des gesamten Tiefziehprozesses einschließlich Beschneiden, Bördeln und Rückfedern ist bei den meisten Automobilherstellern und Werkzeugbaubetrieben ein Standardverfahren. Die Verwendung von LS-DYNA, einem der genauesten Löser für die Blechumformung, erfordert noch einiges an Expertenwissen, was die Verwendung für Methodenplaner in ihrer täglichen Arbeit erschwert. Aus diesem Grund hat Ansys eine spezielle Software für die Simulation der Blechumformung entwickelt: „Ansys Forming“. Ansys Forming ist eine benutzerfreundliche GUI zum Aufbau und zur Auswertung einer Blechumformungssimulation ohne Expertenkenntnisse von LS-DYNA
The Social Cost-of-Living: Welfare Foundations and Estimation
No full textWe present a new class of social cost-of-living indices and a nonparametric framework for estimating these and other social cost-of-living indices. Common social cost-of-living indices can be understood as aggregator functions of approximations of individual cost-of-living indices. The Consumer Price Index (CPI) is the expenditure-weighted average of first-order approximations of each individual’s cost-of-living index. This is troubling for three reasons. First, it has not been shown to have a welfare economic foundation for the case where agents are heterogeneous (as they clearly are.) Second, it uses an expenditure-weighted average which downweights the experience of poor households relative to rich households. Finally, it uses only first-order approximations of each individual’s cost-of-living index, and thus ignores substitution effects. We propose a “common-scaling” social cost-of-living index, which is defined as the single scaling to everyone’s expenditure which holds social welfare constant across a price change. Our approach has an explicit social welfare foundation and allows us to choose the weights on the costs of rich and poor households. We also give a unique solution for the welfare function for the case where the weights are independent of household expenditure. A first order approximation of our social cost-of-living index nests as special cases commonly used indices such as the CPI. We also provide a nonparametric method for estimating second-order approximations (which account for substitution effects).Inflation, Social cost-of-living, Demand, Average derivatives
Ansys Forming – Eine neue GUI für die Blechumformsimulation mit LS-Dyna
No full textDie Blechumformungsimulation hat sich in den letzten 25 Jahren stark weiterentwickelt. Die Simulation des gesamten Tiefziehprozesses einschließlich Beschneiden, Bördeln und Rückfedern ist bei den meisten Automobilherstellern und Werkzeugbaubetrieben ein Standardverfahren. Die Verwendung von LS-DYNA, einem der genauesten Löser für die Blechumformung, erfordert noch einiges an Expertenwissen, was die Verwendung für Methodenplaner in ihrer täglichen Arbeit erschwert. Aus diesem Grund hat Ansys eine spezielle Software für die Simulation der Blechumformung entwickelt: „Ansys Forming“. Ansys Forming ist eine benutzerfreundliche GUI zum Aufbau und zur Auswertung einer Blechumformungssimulation ohne Expertenkenntnisse von LS-DYNA
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