Search results for "Regular"
showing 10 items of 855 documents
Rola i miejsce rozpoznania osobowego (HUMINT) w przeciwdziałaniu zagrożeniom o charakterze hybrydowym
2021
Celem artykułu jest poddanie analizie szczególnego elementu współczesnego systemu bezpieczeństwa państwa, jakim jest rozpoznanie osobowe - HUMINT (ang. Human Intelligence'), jako elementu przeciwdziałającemu zagrożeniom o charakterze hybrydowym. Problemem badawczym jest kwestia: czy i w jaki sposób system bezpieczeństwa państwa jest przygotowany do wykorzystania rozpoznania osobowego w celu eliminacji zagrożeń o charakterze hybrydowym, nieregularnym? Metodami wykorzystanymi w niniejszym artykule jest metoda krytyczna analizy źródeł oraz metoda porównawcza. W artykule powołano się również na własne doświadczenie zawodowe wynikające z zainteresowań badawczych oraz realizowanych zadań służbowy…
Computation of vertically averaged velocities in irregular sections of straight channels
2015
Abstract. Two new methods for vertically averaged velocity computation are presented, validated and compared with other available formulas. The first method derives from the well-known Huthoff algorithm, which is first shown to be dependent on the way the river cross section is discretized into several subsections. The second method assumes the vertically averaged longitudinal velocity to be a function only of the friction factor and of the so-called "local hydraulic radius", computed as the ratio between the integral of the elementary areas around a given vertical and the integral of the elementary solid boundaries around the same vertical. Both integrals are weighted with a linear shape f…
Turbulence in River and Maritime Hydraulics
2018
Understanding of the role of turbulence in controlling transport processes is of paramount importance for the preservation and protection of aquatic ecosystems, the minimisation of deleterious consequences of anthropogenic activity, and the successful sustainable development of river and maritime areas. In this context, the present Special Issue collects 15 papers which provide a representation of the present understanding of turbulent processes and their effects in river and maritime environments. The presented collection of papers is not exhaustive but it allows for highlighting key priority areas and knowledge gaps in this field of research.
Electrocardiographic Imaging Using a Spatio-Temporal Basis of Body Surface Potentials—Application to Atrial Ectopic Activity
2018
Electrocardiographic imaging (ECGI) strongly relies on a priori assumptions and additional information to overcome ill-posedness. The major challenge of obtaining good reconstructions consists in finding ways to add information that effectively restricts the solution space without violating properties of the sought solution. In this work, we attempt to address this problem by constructing a spatio-temporal basis of body surface potentials (BSP) from simulations of many focal excitations. Measured BSPs are projected onto this basis and reconstructions are expressed as linear combinations of corresponding transmembrane voltage (TMV) basis vectors. The novel method was applied to simulations o…
A Self-Contained and Automated Method for Flood Hazard Maps Prediction in Urban Areas
2020
Water depths and velocities predicted inside urban areas during severe storms are traditionally the final result of a chain of hydrologic and hydraulic models. The use of a single model embedding all the components of the rainfall&ndash
Liturgia śląskich kanoników regularnych w średniowieczu
2016
In Medieval Silesia there were two convents o f the Canons Regular: in Wrocław and in Żagań. Their mother-monastery was the abbey in Arrovaise (Flanders). As every order, the Canons Regular had theirs own liturgical customs, in this case borrowed from Arrovai.se. These customs were practised in Silesia at least until the second h alf o f the 14th century, when they started to resemble m ore and m ore the diocesans practices. This phenomenon was particularly noticeable in the 15th century. A t that time, on one hand, we deal with the introduction of the inner-convents reforms, which aimed to elaborate the new statutes. On the other, we also deal with the willingness to enhance the liturgy by…
C1,α regularity for the normalized p-Poisson problem
2017
We consider the normalized p -Poisson problem − Δ N p u = f in Ω ⊂ R n . The normalized p -Laplacian Δ N p u := | Du | 2 − p Δ p u is in non-divergence form and arises for example from stochastic games. We prove C 1 ,α loc regularity with nearly optimal α for viscosity solutions of this problem. In the case f ∈ L ∞ ∩ C and p> 1 we use methods both from viscosity and weak theory, whereas in the case f ∈ L q ∩ C , q> max( n, p 2 , 2), and p> 2 we rely on the tools of nonlinear potential theory peerReviewed
Mappings of finite distortion : boundary extensions in uniform domains
2015
In this paper, we consider mappings on uniform domains with exponentially integrable distortion whose Jacobian determinants are integrable. We show that such mappings can be extended to the boundary and moreover these extensions are exponentially integrable with quantitative bounds. This extends previous results of Chang and Marshall on analytic functions, Poggi-Corradini and Rajala and Akkinen and Rajala on mappings of bounded and finite distortion.
Sport participation and vigilance in children: Influence of different sport expertise
2018
PURPOSE: The present study aimed to investigate the relationship between different types of sport expertise (externally-paced vs. self-paced sports) and vigilance performance in children by evaluating the cardiovascular fitness level of the participants. METHODS: Three groups of children (11.0 ± 0.2 years) differentiated in terms of their regular sport participation (football players, n = 20; track and field athletes, n = 20; non-athletic controls, n = 20) took part in the study. In one session, participants performed the Leger Multi-stage fitness test to estimate their aerobic fitness level. In another session, participants completed the Psychomotor Vigilance Task (PVT) to evaluate their v…
Yearly quotas and country-reserved shares in Italian immigration policy
2008
Regular immigration to Italy is based on a quota system setting annual ceilings to legal entries. Reserved shares are granted to single countries or categories of countries. Reserved shares have been increased; they are used as an incentive to obtain the cooperation of countries of origin in stemming irregular migration flows. The total quota of regular immigration has gradually increased too. Still, it does not fully respond to the growing demand of foreign workers on the labour market, and quotas seem to be used as crypto-regularisations rather than as an instrument for regulating legal entries.