Search results for "AWS"
showing 10 items of 239 documents
On the stability of stablecoins
2021
This paper investigates the volatility processes of stablecoins and their potential stochastic interdependencies with Bitcoin volatility. We employ a novel approach to choose the optimal combination for the power law exponent and the minimum value for the volatilities bending the power law. Our results indicate that Bitcoin volatility is well-behaved in a statistical sense with a finite theoretical variance. Surprisingly, the volatilities of stablecoins are statistically unstable and contemporaneously respond to Bitcoin volatility. Also, whereas the volatilities of stablecoins are not Granger-causal for Bitcoin volatility, lagged Bitcoin volatility exhibits Granger-causal effects on the vol…
Application of 5E model for learning Mechanics through inquiry in secondary education
2018
En este trabajo se examina el proceso de resolución de una actividad de indagación sobre las leyes de Newton que consiste en diseñar un montaje con el cuál averiguar qué superficie es la más adecuada para arrastrar cajas de ropa en un almacén. Los participantes son 23 estudiantes de 4º de ESO. Para la toma de datos se recogen sus respuestas escritas relativas al diseño del dispositivo, a la toma de datos, interpretación de resultados y establecimiento de conclusiones. Para el análisis se examinan utilizando como herramienta el modelo de instrucción 5E. Los resultados principales apuntan a ciertas dificultades en los desempeños del alumnado relativos a la elaboración del montaje y a la expli…
Choix du système électoral et Convention européenne des droits de l'homme : quelques observations à la lumière d'une affaire concernant une loi élect…
2013
Within the space of less than two years the European Court of Human Rights and the Italian Constitutional Court have returned almost opposing judgments on the question of the observance of political rights by Italy’s 2005 electoral law. The ECHR found the applications made to it by groups of electors inadmissible given the manifestly ill-founded character of the grievances they were based on. The Constitutional Court, on the contrary, concluded that the law was unconstitutional. At first sight, the differing approaches by the two courts and the differing conclusions they reached may be viewed as an expression of the complementary nature of the European system of protection of human rights w…
Laws, Regulations, Standards, and Guidelines for the Protection of Man Against Mechanical Vibration
1986
Regulations that serve to protect workers from the dangers arising from mechanical vibration have been established by the legislators and agencies responsible for work protection, such as ministries of labor and social affairs and industrial insurance organizations. Furthermore, international agreements have also established such protective measures. The corresponding laws, rules or agreements relate to: 1. Occupational diseases 2. Criteria for the evaluation of risk from mechanical vibration and the establishment of exposure limit values 3. Guidelines for the measurement and evaluation of vibration 4. Medical examinations before employment and regular health examinations 5. Technical and o…
Islands of biogeodiversity in arid lands on a polygons map study: Detecting scale invariance patterns from natural resources maps.
2016
Many maps (geology, hydrology, soil, vegetation, etc.) are created to inventory natural resources. Each of these resources is mapped using a unique set of criteria, including scales and taxonomies. Past research indicates that comparing results of related maps (e.g., soil and geology maps) may aid in identifying mapping deficiencies. Therefore, this study was undertaken in Almeria Province, Spain to (i) compare the underlying map structures of soil and vegetation maps and (ii) investigate if a vegetation map can provide useful soil information that was not shown on a soil map. Soil and vegetation maps were imported into ArcGIS 10.1 for spatial analysis, and results then exported to Microsof…
Alternative Investment Fund Managers Directive and its Impact on Malta’s Financial Service Industry
2016
The introduction of the Directive on Alternative Investment Fund Managers (AIFM Directive 2011/61/EU) in 2013 means a radical transformation of the EU regulatory landscape for the whole alternative investment fund industry. Taking into account the growing meaning of the alternative investment fund industry in Europe, the aim of the paper is to assess the impact the Directive on Alternative Investment Fund Managers (AIFMD) will have on the Alternative Investment Fund Managers (AIFMs) managing Alternative Investment Funds (AIFs) in the EU. The research is based on the case of Malta, which is a quickly growing financial centre. The main findings are based on an analysis of questionnaire respon…
An EKF Based Method for Path Following in Turbulent Air
2017
An innovative use of the Extended Kalman Filter (EKF) is proposed to perform both accurate path following and adequate disturbance rejection in turbulent air. The tuned up procedure employs simultaneously two different EKF: the first one estimates gust disturbances, the second one estimates modified aircraft parameters. The first filter, by using measurements gathered in turbulent air, estimates both aircraft states and wind components. The second one, by using the estimated disturbances, obtains command laws that are able to reject disturbances. The predictor of the second EKF uses the estimated wind components to solve motion equations in turbulent air. Besides a set of unknown stability …
An exploration of isotopic variability in feathers and claws of Lesser Kestrel Falco naumanni chicks from southern Sicily
2016
Stable isotopes are nowadays commonly used in the study of many key features of avian ecology. However, the adequate choice of what isotopic ratio to consider and what tissues to sample for assessing specific questions may be tricky. Here, we explored the variation in a suite of stable isotope ratios (δ13C, δ15N, δ34S, δ2H, δO) in the feathers and claws of chicks of Lesser Kestrels Falco naumannifrom south-eastern Sicily (Italy) sampled throughout colonies of the same population but surrounded by different habitats. Ouraimsare to provide an insight into the isotopic ecology of Lesser Kestrel and to provide methodological indications for futurestudies.Specifically,we tested whether stable is…
Exact mechanical models of fractional hereditary materials
2012
Fractional Viscoelasticity is referred to materials, whose constitutive law involves fractional derivatives of order β R such that 0 β 1. In this paper, two mechanical models with stress-strain relation exactly restituting fractional operators, respectively, in ranges 0 β 1 / 2 and 1 / 2 β 1 are presented. It is shown that, in the former case, the mechanical model is described by an ideal indefinite massless viscous fluid resting on a bed of independent springs (Winkler model), while, in the latter case it is a shear-type indefinite cantilever resting on a bed of independent viscous dashpots. The law of variation of all mechanical characteristics is of power-law type, strictly related to th…
STATE BUILDING, RURAL DEVELOPMENT, AND THE MAKING OF A FRONTIER REGIME IN NORTHEASTERN ETHIOPIA, c. 1944–75
2016
AbstractCombining a set of grey literature and primary sources, this article analyses the rise and fall of the sultanate of Awsa, northeastern Ethiopia, between 1944 and 1975. Ali Mirah exploited the typical repertoires of a frontier regime to consolidate a semi-independent Muslim chiefdom at the fringes of the Christian empire of Ethiopia. Foreign investors in commercial agriculture provided the sultanate and its counterparts within the Ethiopian state with tangible and intangible resources that shaped the quest for statecraft in the Lower Awash Valley.