Search results for "Rate"
showing 10 items of 22191 documents
The Fouling phenomena in membrane bioreactors: a comparison of different mathematical modelling approaches
2015
Eight different modelling approaches for membrane fouling modelling have been compared and the uncertainty has been assessed. Overall the eight approaches provided satisfactory results in terms of model fitting with the measured data. Different results have been obtained in terms of uncertainty bounds showing a different reliability of the model approaches. The study allowed to gain insights about the mechanisms which control fouling in membrane bioreactors.
Remarks on negative interest rates
2016
Negative nominal interest rates have been observed in several segments of financial markets. Being only partly a result of supply and demand and mainly enforced by the central banks, negative interest rates are getting more and more popular. While it is relatively easy to identify the reasons for this quite strange phenomenon, the con-sequences, especially the long-term consequences, are not too clear for both scientists and ordinary observers. This paper is an attempt to formulate some remarks on causes, evidence, and possible effects of negative interest rates. A warning is issued, with respect to monetary policy and financial stability.
Rural Population in Romania. Development and Tendencies (2000 – 2010)
2013
Abstract Demography is among the top factors which exert an undeniable influence upon the economic environment. Therefore, the populace - through its dynamics and characteristics - leaves an imprint upon the social and economic landscape, being a keen barometer and contributing to economic progress. The relationship demography-economy is extremely tight, since the populace is perceived as being a true representation of what characterizes our economy. Romania originated as a country with an agriculture-based economy – a fact which translated in its major rural population; nowadays, due to a sum of various developments, the rural populace is undergoing a decreasing trend. The situation is all…
Problemløsning i matematikk : hvordan resonnerer elever på 9.trinn under arbeid med problemløsningsoppgaver i multiplikasjon?
2016
Masteroppgave matematikkdidaktikk – Universitetet i Agder 2016 This is a qualitative case study, which highlights students' reasoning in problem solving. The research question is: How do students in 9th grade reason while working with problem solving tasks in multiplication. The purpose of this study is to investigate how students in 9th grade reason while working with problem solving tasks. More knowledge about students' reasoning in problem solving, can contribute to appropriate use of this in teaching. I defined two sub-questions that is attempted to be answered in the discussion. The two sub-questions are: 1. How do students´ reason and which strategies do they use? 2. How do problem so…
The impact of regional demographics on Higher Education Policy. An example from Silesia, Poland
2021
Abstract The determinants of higher education policy have their sources in various spheres, such as economic, social, educational, national policy, administrative, and demographic. Problems for the development of higher education also stem from these spheres. One of them is the challenging demographic situation that is a significant element of developing higher education in southern Poland (particuarly in the Silesia region). Given this context, this article aims to indicate the policies of the universities in the region which respond to the existing demographic threats. This relationship is to confront student opinions regarding their vision for their education and future career within the…
Promuovere le competenze strategiche e il successo accademico degli studenti universitari mediante il tutoraggio tra pari online a distanza
2021
Il 26 febbraio 2021 è stata avviata una ricerca-intervento ispirata alla teoria dell’educazione personalizzata. Attualmente, 19 studenti (17 femmine e 2 maschi) del secondo anno del corso di studi triennale in Scienze dell’Educazione attivato presso l’Università degli Studi di Palermo, stanno partecipando in qualità di peer-tutor a una iniziativa di didattica universitaria. Questa iniziativa persegue due obiettivi: promuovere l’autoefficacia percepita (GSE), la percezione delle proprie competenze strategiche (QPCS) e la prospettiva temporale (ZTPI) in un gruppo di 35 studenti che, giunti al secondo anno del medesimo corso di studi, non hanno ancora sostenuto da 1 a 6 esami tra quelli previs…
Pirate John Gow and Literary Renderings of his Career by Daniel Defoe and Sir Walter Scott
2018
This article analyses two literary representations - by Daniel Defoe and Sir Walter Scott - of the career of an early-18th century Orkney pirate in order to confront the contemporary view of John Gow as an unprincipled cutthroat with later literary images of a Romantic corsair. It therefore examines evolving literary approaches in the period to socially transgressive behaviour.
Hydro-mechanical modelling of a natural slope affected by a multiple slip surface failure mechanism
2009
A coupled hydro-mechanical formulation is presented for the analysis of landslide motion during crisis episodes. The mathematical formulation is used to model a natural slope affected by a multiple slip surface failure mechanism, in which pore water pressure evolution was identified as the main cause for movement accelerations. An elasto-plastic constitutive model is adopted for the behaviour of slip surfaces. Material parameters are obtained by combining the available laboratory tests and the back analysis of some crisis episodes. After being calibrated and validated, the model is applied to improve the understanding of the physical processes involved and to predict the landslide behaviour…
An effective stress based shear strength criterion for unsaturated compacted double-porosity clays
2015
An effective stress based shear strength criterion is proposed taking into account the fundamental effects of microstructure characteristics on retention properties of compacted double-porosity clays and their overall coupled hydro-mechanical behaviour. Results of triaxial compression tests carried out on saturated and unsaturated samples of a compacted scaly clay show that points representative of failure conditions depict a unique failure envelope when the macropore degree of saturation is used in the definition of the effective stress and its evolution with the suction is taken into account. Furthermore, the proposed criterion is very effective to consider the most relevant aspects of su…
2020 ESC Guidelines for the management of acute coronary syndromes in patients presenting without persistent ST-segment elevation
2020
2020 ESC Guidelines for the management of acute coronary syndromes in patients presenting without persistent ST-segment elevation