Search results for "level"
showing 10 items of 3465 documents
A model for instructional design in mathematics implemented in teacher education
2018
International audience; This paper presents a model for instructional design in mathematics and reports from student teachers' experimentation with it in secondary school. The model is framed within the theory of didactical situations in mathematics. It contributes to the research field through the notion of an epistemological model, which provides an enhanced understanding of the stage of ‘conception and a priori analysis' of didactical engineering. Findings show how the model is instrumental in creating student teachers' awareness of the impact of the milieu on the nature of the knowledge developed by the pupils.
Demographic aspects of aging
2021
Population aging is occurring in almost all developed countries, albeit with differences in timing and intensity. This unprecedented phenomenon is evident not only in the change in the population age structure, but also in the impressive increase in the average length of life. After describing past, current, and future population trends, this contribution presents theories explaining the reasons for this long-term process that is completely reshaping the age structure of the population. It also describes the inequalities in aging (focusing in particular on the differences by gender, education, and cause of death), and introduces some measures of the individual health and economic consequenc…
Agglomeration Externalities and the Productivity of Italian Firms
2015
Despite the richness of contributions on the effects of agglomeration on economic activity, the empirical evidence still falls short, especially at the microeconomic level, where they should matter the most. This paper adds to this literature by performing an empirical exploration of the role of Marshallian, Jacobian, and Porterian externalities for the productivity of Italian firms. In particular, a large dataset of small and medium enterprises is first employed to estimate firm-level total factor productivity (TFP). Then dynamic panel and instrumental variables estimation methods are used to assess the effects of agglomeration externalities. The findings seem to suggest that these effects…
STUDY ON NOISE LEVEL GENERATED BY HUMAN ACTIVITIES IN SIBIU CITY, ROMANIA
2014
In this paper I have proposed an analysis and monitoring of the noise sources in the open spaces of air traffic, rail and car in Sibiu. From centralizing data obtained from the analysis of the measurements performed with equipment noise levels, we concluded that the noise and vibration produced by means of Transportation (air, road, rail) can affect human health if they exceed limits. Noise is present and part of our lives and always a source of pollution as any of modern man is not conscious.
Measuring Distraction at the Levels of Tactical and Strategic Control: The Limits of Capacity-Based Measures for Revealing Unsafe Visual Sampling Mod…
2011
The control theory of driving suggests that driver distraction can be analyzed as a breakdown of control at three levels. Common approach for analyzing distraction experimentally is to utilize capacity-based measures to assess distraction at the level of operational control. Three driving simulation experiments with 61 participants were organized to evaluate which kind of measures could be used to analyze drivers' tactical visual sampling models and the related effects of distraction while searching textual information on in-car display. The effects of two different text types were evaluated. The utilized capacity-based measures seemed to be insufficient for revealing participants' tactical…
Shape coexistence in $^{178}$Hg
2019
Lifetime measurements of excited states in 178 Hg have been performed using the 103 Rh ( 78 Kr , p 2 n ) reaction at a beam energy of 354 MeV. The recoil-decay tagging (RDT) technique was applied to select the 178 Hg nuclei and associate the prompt γ rays with the correlated characteristic ground-state α decay. Lifetimes of the four lowest yrast states of 178 Hg have been determined using the recoil distance Doppler-shift (RDDS) method. The experimental data are compared to theoretical predictions with focus on shape coexistence. The results confirm the shift of the deformed prolate structures to higher lying states but also indicate their increasing deformation with decreasing neutron numb…
Fine structure in the α decay of 156Lu and 158Ta
2019
Fine structure in the α decay of high-spin states in 156Lu and 158Ta has been identified by means of αγ - coincidence analysis. One new α decay from 156Lu and two from 158Ta were identified, one of which was found to populate a previously unknown state in 154Lu. The hindrance-factor systematics from all four odd-odd, N = 85 nuclei with known α-decaying, πh11/2 coupled states were reviewed and are discussed. These proved consistent with the previously assigned (πh11/2νh9/2 )10+ configuration of the α-decaying state in 156Lu, which differs from the (πh11/2ν f7/2 )9+ assignments in the other three nuclei. peerReviewed
Excited states in 217Ra populated in the α decay of 221Th
2020
Fine structure in the α decay of 22190Th, populating excited states in 21788Ra, was studied using αγ-coincidence spectroscopy. Two α-decay branches from 221Th have been newly observed, with Eα(keV)[bα(%)]=7951(8)[0.14(3)] and 8247(3)[1.51(12)], together with three previously known branches. Also, two new states in 217Ra were identified at E = 177 and 227 keV. The ground-state configurations of the odd-A, N = 131 transitional isotones above 208Pb are interpreted from their α-decay fine structure systematics and considered in terms of predictions using spherical shell and reflection-asymmetric models. peerReviewed
The role of top-level sport in Finland : a governmental perspective of the present status and future trends
2011
Top-level sports has been through its existance a part of Finnish society which creates social content. It has its own place in a nation’s history and culture. It has promoted national identity among Finnish people. This study examines the role and different faces of Finnish top-level sports during of its exisctance from early 1900s until today. In Today’s top-level sports there are many interesting aspects from which professionalism rises the topmost. From a governmental perspective the concept of top-level sport refers to sporting events and athletes who already represent their countries or aim at international success and recognition. Moreover such sports and athletes are also publicly s…
Questions vives pour la géographie de l'intercommunalité
2008
This paper addresses the geographical stakes which animate cooperation between municipalities. This contribution updates work of Guy Baudelle (1996) and Philippe Menerault (1994) by establishing a new panorama of the intercommunality question through the contribution of geographers. The examination of articles being interested in the intercommunality, published in many reviews of geography, enabled us to draw up a synthesis of the concerns of the discipline on historical, identity, organisational and space dimensions of the cooperation between municipalities. In addition to the geographical interest of this approach, the analysis raises a paradox between spatial cutting and the space practi…