Search results for "principles"
showing 10 items of 265 documents
Monitoring Electron-Photon Dressing in WSe 2
2016
Optical pumping of solids creates a non-equilibrium electronic structure where electrons and photons combine to form quasiparticles of dressed electronic states. The resulting shift of electronic levels is known as the optical Stark effect, visible as a red shift in the optical spectrum. Here we show that in a pump-probe setup we can uniquely define a non-equilibrium quasiparticle bandstructure that can be directly measurable with photoelectron spectroscopy. The dynamical photon-dressing (and undressing) of the many-body electronic states can be monitored by pump-probe time and angular resolved photoelectron spectroscopy (tr-ARPES) as the photon-dressed bandstructure evolves in time dependi…
Dialogue through the eyes: Exploring teachers’ focus of attention during educational dialogue
2020
Abstract This study explored teachers’ focus of attention during educational dialogue. Teachers’ focus of attention was recorded in 54 Grade 1 classrooms using Tobii Pro Glasses 2 mobile eye-tracking device. From the video recordings, episodes of educational dialogue were identified and categorised by quality. Teacher’s focus of attention on students was examined during the dialogue episodes. Results showed that teachers allocated their attention relatively unevenly among the students. More students got visual attention during high-quality educational dialogue than during moderate-quality dialogue. This study provides insight into the quality of educational dialogue by combining assessment …
Designing theme-based tabletop exercise for identifying and dealing with coordination problems in emergencies
2016
Tabletop exercises (TTXs) are used to train managers and other actors to deal with emergencies. These exercises that focus on the organisational coordination are planned and controlled by exercise managers through scenarios with predetermined events that participants discuss and act upon. Such exercises may lead to actors being ill prepared to deal with dynamic and emergent situations and problems. To address this knowledge gap, we apply an action design research approach to develop a TTX structured around non-sequential themes instead of predetermined events, thus allowing the participants to identify their own problems during the exercise. Our research contributes to existing knowledge by…
On Human–Computer Interaction in Brain–Computer Interfaces
2014
In this chapter, theoretical reflections on human–computer interaction in brain–computer interfaces (BCIs) are combined with the results of an empirical investigation concerning non-invasive EEG-based BCI users’ experiences with this technology. After a short overview of transhumanist visions in the field of neurotechnology this text discusses some anthropological positions concerning interaction between man and technical devices. The focus will be on the concept of “transparency”. Then some empirical results of a pilot study which investigated BCI users’ experiences concerning human–computer interaction in BCI use are presented and discussed against the anthropological background.
Fundusz Medyczny - organizacja i zasady gospodarki finansowej
2021
Celem artykułu jest analiza przepisów normujących organizację i zasady gospodarki finansowej Funduszu Medycznego w kontekście funkcji, jakie w doktrynie prawa finansowego przypisuje się funduszom celowym. W pierwszej części opracowania poddano ocenie regulacje dotyczące organizacji i zadań tej jednostki. Drugą poświęcono przedstawieniu źródeł finansowania oraz zasad gospodarki finansowej Funduszu, zwracając szczególną uwagę na problem zasilania tej jednostki tzw. wpłatą z budżetu państwa. Z uwagi na ograniczone ramy artykułu do odrębnego opracowania pozostawiono problematykę programów inwestycyjnych oraz kwestię trybu i zasad przekazywania środków z Funduszu. Stosując metody właściwe współc…
Internal audit professional principles and academic literature over the last decade: is there a gap to bridge
2022
The Institute of Internal Auditors (IIA) has defined the ethical principles internal auditors must adhere to, allowing them to create a common understanding of ethical behaviour within their profession, thereby promoting ethical culture. This paper aims to analyse the role of these principles in the main branches of internal audit research over the last decade. We examine the most important articles published in this field and categorise them into seven main strands. We assess the extent to which these strands focus on the IIA ethical principles, aiming to identify research gaps in the extant literature. Our findings show that the literature dealing with ethical principles in the recruitmen…
Light-Induced Renormalization of the Dirac Quasiparticles in the Nodal-Line Semimetal ZrSiSe
2020
In nodal-line semimetals linearly dispersing states form Dirac loops in the reciprocal space, with high degree of electron-hole symmetry and almost-vanishing density of states near the Fermi level. The result is reduced electronic screening and enhanced correlations between Dirac quasiparticles. Here we investigate the electronic structure of ZrSiSe, by combining time- and angle-resolved photoelectron spectroscopy with ab initio density functional theory (DFT) complemented by an extended Hubbard model (DFT +U +V). We show that electronic correlations are reduced on an ultrashort timescale by optical excitation of high-energy electrons-hole pairs, which transiently screen the Coulomb interac…
Leitbilder im Recht: Grenzen der Ordnung – Chancen der Unordnung
2018
„Guiding principles“ as topoi in German juridical discourse are mainly analyzed with regard to their relation to familiar dogmatic and methodological categories. This article suggests engaging with a deconstructing, psychoanalysis-inspired approach to the guiding principles of legal discourse.
Assessing Effects of eGovernment Initiatives Based on a Public Value Framework
2012
Published version of a chapter in the book: Electronic Government. Also available from the publisher at: http://dx.doi.org/10.1007/978-3-642-33489-4_21 Assessing effects of eGovernment initiatives is considered an important but challenging endeavor. Assessments are, among other things, important to justify e-government investments. They are challenging because they are complex, often based on locally defined indicators, many times over-emphasizing financial effects, imprecise, faced with a number of contingencies and very seldom validated. Consequently, effect assessments can be seen as imprecise and difficult to compare across different initiatives. This paper addresses some of the challen…
Micro(Nano)plastic analysis: a green and sustainable perspective
2022
Within the last years aspects such as green, eco-friendly and sustainable are making their way into analytical chemistry. The field has changed with the introduction of these concepts. Information on the consumption of toxic solvents and energy is now a part of everyday life. This green analytical chemistry could be playing a pioneering role in the analysis of micro(nano)plastics in the environment. We discuss the roles of green analytical and sustainability within micro(nano) plastics determination and its possible applications. We explain its many advantages, like their function to preserve the environment and operator health or their role in the so-called eco-friendly methodologies, but …