Search results for "concepts"
showing 10 items of 141 documents
The MuPix high voltage monolithic active pixel sensor for the Mu3e experiment
2015
Mu3e is a novel experiment searching for charged lepton flavor violation in the rare decay μ → eee. In order to reduce background by up to 16 orders of magnitude, decay vertex position, decay time and particle momenta have to be measured precisely. A pixel tracker based on 50 μm thin high voltage monolithic active pixel sensors (HV-MAPS) in a magnetic field will deliver precise vertex and momentum information. Test beam results like an excellent efficiency of >99.5% and a time resolution of better than 16.6 ns obtained with the MuPix HV-MAPS chip developed for the Mu3e pixel tracker are presented.
Relaxation due to random collisions with a many-qudit environment
2008
We analyze the dynamics of a system qudit of dimension mu sequentially interacting with the nu-dimensional qudits of a chain playing the ore of an environment. Each pairwise collision has been modeled as a random unitary transformation. The relaxation to equilibrium of the purity of the system qudit, averaged over random collisions, is analytically computed by means of a Markov chain approach. In particular, we show that the steady state is the one corresponding to the steady state for random collisions with a single environment qudit of effective dimension nu_e=nu*mu. Finally, we numerically investigate aspects of the entanglement dynamics for qubits (mu=nu=2) and show that random unitary …
Basic Physical Concepts
2010
Mossbauer spectroscopy is based on recoilless emission and resonant absorption of γ-radiation by atomic nuclei. The aim of this chapter is to familiarize the reader with the concepts of nuclear γ-resonance and the Mossbauer effect, before we describe the experiments and relevant electric and magnetic hyperfine interactions in Chaps. 3 and 4. We prefer doing this by collecting formulae without deriving them; comprehensive and instructive descriptions have already been given at length in a number of introductory books ([7–39] in Chap. 1). Readers who are primarily interested in understanding their Mossbauer spectra without too much physical ballast may skip this chapter at first reading and p…
Podejścia do nauki o języku w dydaktyce języka polskiego jako L1
2020
The article discusses didactic approaches to teaching grammar that have been developed in Polish language didactics since the end of the 18thcentury: grammatical-normative, system--grammatical and functional. Subsequent approaches are presented in the historical order, but the considerations focus on their main theoretical assumptions, areas of criticism of previous approaches and methodological solutions developed on these foundations. The approach adopted has been defined as the overriding principle of understanding the learning process.
The Rocky Road towards Professional Autonomy : The Estonian Journalists’ Organization in the Political Turmoil of the 20th Century
2017
This article attempts to explain the relationships between journalists, politics and the state from the perspective of collective autonomy, that of the professional organization of journalists. The case of Estonian Journalists’ Union demonstrates the complexity and historical contingency of professional autonomy of journalism. The development of the Estonian journalists’ organization occurred as a sequence of transformations from the Estonian Journalists’ Association to the Estonian Journalists’ Union to the Soviet type journalists’ union, and lastly to an independent trade union. This sequence was disrupted by several fatal breakdowns that changed not only the character of the association,…
Localizing the politics of privacy in communication and media research
2020
While previous communication and media research has largely focused on either studying privacy as personal boundary management or made efforts to investigate the structural (legal or economic) condition of privacy, we observe an emergent body of research on the political underpinnings of privacy linking both aspects. A pronounced understanding of the politics of privacy is however lacking. In this contribution, we set out to push this forward by mapping four communication and media perspectives on the political implications of privacy. In order to do so, we recur on Barry’s (2002) distinction of the political and the politics and outline linkages between individual and structural dimensions…
What is psychotherapy today? Overview of psychotherapeutic concepts
2020
Pawlak Adam, Kacprzyk-Straszak Agnieszka. What is psychotherapy today? Overview of psychotherapeutic concepts. Journal of Education, Health and Sport. 2020;10(5):19-32. eISSN 2391-8306. DOI http://dx.doi.org/10.12775/JEHS.2020.10.05.002 https://apcz.umk.pl/czasopisma/index.php/JEHS/article/view/JEHS.2020.10.05.002 https://zenodo.org/record/3784514 The journal has had 5 points in Ministry of Science and Higher Education parametric evaluation. § 8. 2) and § 12. 1. 2) 22.02.2019. © The Authors 2020; This article is published with open access at Licensee Open Journal Systems of Nicolaus Copernicus University in Torun, Poland Open Access. This article is distribute…
Conceptualizing and Measuring the Quality of Democracy: The Citizens' Perspective
2018
In recent years, several measurements of the quality of democracy have been developed (e.g. Democracy Barometer, Varieties of Democracy Project). These objective measurements focus on institutional and procedural characteristics of democracy. This article starts from the premise that in order to fully understand the quality of democracy such objective measurements have to be complemented by subjective measurements based on the perspective of citizens. The aim of the article is to conceptualize and measure the subjective quality of democracy. First, a conceptualization of the subjective quality of democracy is developed consisting of citizens’ support for three normative models of democracy …
Instruction-based clinical eye-tracking study on the visual interpretation of divergence : how do students look at vector field plots?
2018
Relating mathematical concepts to graphical representations is a challenging task for students. In this paper, we introduce two visual strategies to qualitatively interpret the divergence of graphical vector field representations. One strategy is based on the graphical interpretation of partial derivatives, while the other is based on the flux concept. We test the effectiveness of both strategies in an instruction-based eye-tracking study with N = 41 physics majors. We found that students’ performance improved when both strategies were introduced (74% correct) instead of only one strategy (64% correct), and students performed best when they were free to choose between the two strategies (88…
La enseñanza del verbo y la actividad metalingüística de los alumnos. Dos investigaciones en aulas de Secundaria
2021
La investigación en Didáctica de la lengua persigue entender las relaciones entre la perspectiva de la enseñanza, la perspectiva del aprendizaje y la de los contenidos trabajados en el aula de Lengua. Este artículo pone el foco en el verbo como contenido gramatical a partir de dos investigaciones centradas en la actividad metalingüística de los alumnos de Educación Secundaria Obligatoria. En la primera, los estudiantes intentan explicar las diferencias entre los tiempos verbales del pasado como paso previo para utilizarlos en la escritura. En la segunda, la reflexión se centra en el subjuntivo a partir de una actividad de pares mínimos que tiene como objetivo comprender cómo conceptualizan …