306 research outputs found
Bokrecension: Pedagogisk portfölj – för karriär och utveckling
No full textJan Scheffel recenserar:Pedagogisk portfölj – för karriär och utveckling (2013), av Katarina Winka och Åsa Ryegård, Studentlitteratur</p
On the solvability of the mind–body problem
No full textThe mind-body problem is one of the most enigmatic issues in philosophy that has yet to be resolved. Professor Jan Scheffel from KTH Royal Institute of Technology, Sweden analyses the mind–body problem from a physicalist perspective. He finds that consciousness is epistemologically emergent and shows that this result overlaps with the problem of free will. If a theory for consciousness could be constructed, free will would not exist. Professor Scheffel discloses that the mind–body problem cannot be solved reductionistically and evolves the notion of emergence in an argument for free will.QC 20201013</p
On the solvability of the mind–body problem [Elektronisk resurs]
No full textThe mind-body problem is one of the most enigmatic issues in philosophy that has yet to be resolved. Professor Jan Scheffel from KTH Royal Institute of Technology, Sweden analyses the mind–body problem from a physicalist perspective. He finds that consciousness is epistemologically emergent and shows that this result overlaps with the problem of free will. If a theory for consciousness could be constructed, free will would not exist. Professor Scheffel discloses that the mind–body problem cannot be solved reductionistically and evolves the notion of emergence in an argument for free will.</p
Time-spectral modelling of drift wave turbulence
No full textTime spectral methods for initial-value partial differential equations avoid the time stepping being characteristic for temporal finite difference schemes. Large gains in efficiency should then be within reach for problems in plasma physics with widely separated time scales. In the recently developed Generalized Weighted Residual Method GWRM [1], temporal, spatial and parameter domains are all handled using a Chebyshev polynomial solution ansatz. The coefficients of the ansatz are determined using a generalized weighted residual method, for which a new efficient equation system solver has been applied [2]. In addition, subdomain methods for the temporal and spatial domains have been developed [3] and employed successfully in a number of test problems. We will here also present a related method, being based on least square minimization of the residual rather than on the Galerkin method. Both methods are applied to problems in drift wave turbulence from which results will be presented.\\[4pt] [1] Scheffel J, Partial Differential Equations: Theory, Analysis and Applications (Nova Science Publishers) p 1-49, 2011.\\[0pt] [2] Scheffel J and H{\aa}kansson C, Appl. Numer. Math. 59(2009)2430.\\[0pt] [3] Scheffel J and Mirza A, Am. J. of Comp. Math. 2(2012)72.</p
Can time-spectral methods improve turbulence modelling?
No full textIn computational fusion physics, the widely separated time and space scales often demand extremely long computer simulations and vast memory resources, using finite time steps. Gyrokinetic turbulence modelling at high Reynolds or Lundquist numbers may be allocated millions of CPU hours for parallel processing on supercomputers. It is thus worthwhile to explore new avenues that may alleviate requirements on computer power. Indeed, time-stepping may be completely avoided for initial-value problems. In the recently developed Generalized Weighted Residual Method GWRM [1], temporal, spatial and parameter domains are all handled using a solution ansatz in the form of a sum of Chebyshev polynomials. The coefficients of the ansatz are determined using a weighted residual method for which a new efficient equation solver has been developed [2]. In addition, the temporal and spatial computational region has been successfully treated using subdomain methods in a number of test problems, more efficiently than relevant finite difference methods. The GWRM, however, relies on solution of linear systems of equations in each subdomain, and memory requirement is an issue. In this presentation we will discuss recent subdomain approaches for efficient and convergent modelling of drift-wave turbulence. [1] Scheffel J, Partial Differential Equations: Theory, Analysis and Applications (Nova Science Publishers) p 1-49, 2011.[2] Scheffel J and Håkansson C, Appl. Numer. Math. 59(2009)2430.</p
Semi-analytical solution of initial-value problems
No full textA fully spectral weighted residual method for solution of general initial value partial differential equations has been developed. All time, spatial and physical parameter domains are represented by Chebyshev series, enabling global semi-analytical solutions. The method avoids time step limitations. The spectral coefficients are determined by iterative solution of a linear or nonlinear system of algebraic equations, for which a globally convergent root solver has been developed. Accuracy is controlled by the number of included Chebyshev modes in each dimension. The computational efficiency is shown to increase through the use of sub-domains. It is shown by example that the method may be used for efficient solution of nonlinear initial value problems in fluid mechanics and magnetohydrodynamics.1J. Scheffel, ”Semi-analytical solution of initial-value problems”, TRITA-ALF-2004-03, Royal Institute of Technology, Stockholm, Sweden, 2004.</p
Creating accessible interactive OER with H5P for inclusive language education
No full textThe contents of this course/microcredit were developed under grant DPPF_2223_034_York_FSL Projects awarded from the Province of Ontario, Ministry of Colleges and Universities.This course/microcredit is composed of three modules: Module 1, What are OER and Why are They Important?, which explores the significance of OER and free licenses; Module 2, Creating Interactive and Accessible OER, which focuses on developing engaging and inclusive OER; and Module 3, How to Measure the Impact of Your Interactive and Accessible OER in Your Teaching Environment, which examines ways to assess educators’ effectiveness in teaching.
The goal of this course/microcredit is to help you use OER, repurpose it and create interactive content with H5P.
The contents of this course/microcredit were developed under grant DPPF_2223_034_York_FSL Projects awarded from the Province of Ontario, Ministry of Colleges and Universities.
Please note that the views expressed in the publication are the views of the Recipient of the award ad co-author of the course and do not necessarily reflect those of the Province
La duquesa Hadwig de Suabia a través de la novela histórica alemana "Ekkehard" de Joseph Victor von Scheffel
No full textEl objetivo de este artículo es presentar el retrato de la duquesa Hadwig de Suabia, que aun siendo una de las mujeres intelectuales más importantes del Renacimiento otoniano de Alemania, es prácticamente desconocida en España. El retrato además se hará a través de la descripción que realiza de ella el autor alemán Joseph Victor von Scheffel en su novela histórica Ekkehard. Eine Geschichte aus dem 10. Jahrhundert (1855). Hay constancia de Hadwig en fuentes literarias medievales que posteriormente fueron rescatadas en el siglo xix por Scheffel y que él documenta exhaustivamente en su libro, esbozando una semblanza tan detallada de la época y de esta mujer, que aun siendo un texto literario y que por tanto contiene elementos ficticios, no deja de ser un testimonio interesante digno de ser estudiado.The aim of this paper is to present a portrait of the duchess Hadwig of Swabia, who in spite of being one of the most important intellectual women of the Ottonian Renaissance in Germany, is practically unknown in Spain. This portrait is based on the description that the German author Joseph Victor von Scheffel writes in his historical novel Ekkehard. Eine Geschichte aus dem 10. Jahrhundert (1855). Some literary medieval resources speak of Hadwig, and they were later used by Scheffel in the 19th century. He documents them in a very exhaustive way in his novel and achieves such a detailed view of this period and this woman that, although the text is a literary text and therefore contains some fiction, it is an interesting evidence that it is worth studying.Filologí
Energy Confinement in the Advanced RFP
No full textIn earlier numerical studies [1,2] of confinement in the optimized, conventional reversed-field pinch (RFP), the scaling of energy confinement time with plasma current and density was found to be too weak to lead into fusion relevant regimes. In the advanced RFP, however, the detrimental magnetic (dynamo) fluctuations are largely eliminated by the presence of an externally applied electric field. This field is adjusted to generate a tearing mode stable parallel current density profile. Previous studies [3,4] used a gaussian shaped electric field with given width and amplitude that was localised at some minor radius of the plasma. A threefold increase in energy confinement was found, but the three associated parameters made further optimisation difficult. In the present work a new, parameter free scheme for current profile control is introduced. An automatic control system continuously replaces the dynamo electric field. Early results indicate strong energy confinement enhancement.[1] J. Scheffel and D. D. Schnack, Phys. Rev. Lett. 85 (2000) 322.[2] J. Scheffel and D. D. Schnack, Nucl. Fusion 40 (2000) 1885.[3] C. R. Sovinec and S. C. Prager, Nucl. Fusion 39 (1999) 777.[4] J. Scheffel and D. D. Schnack, International RFP Workshop, Stockholm 2002.</p
Group Coach for Co-located Collaboration
No full textCollaboration is an important 21st century skill; it can take place in a remote or co-located setting. Co-located collaboration (CC) gives rise to subtle human interactions that can be described with multimodal indicators like gaze, speech and social skills. In this demo paper, we first give a brief overview of related work that has identified indicators during CC. Then, we look briefly at the feedback mechanisms that have been designed based on these indicators to facilitate CC. Using these theoretical insights, we design a prototype to give automated real-time feedback to facilitate CC taking the help of the most abundant modality during CC i.e., audio cues.</p
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