Search results for "SIM"
showing 10 items of 10139 documents
Functional Type Error Control for Stabilised Space-Time IgA Approximations to Parabolic Problems
2018
The paper is concerned with reliable space-time IgA schemes for parabolic initial-boundary value problems. We deduce a posteriori error estimates and investigate their applicability to space-time IgA approximations. Since the derivation is based on purely functional arguments, the estimates do not contain mesh dependent constants and are valid for any approximation from the admissible (energy) class. In particular, they imply estimates for discrete norms associated with stabilised space-time IgA approximations. Finally, we illustrate the reliability and efficiency of presented error estimates for the approximate solutions recovered with IgA techniques on a model example. peerReviewed
A graph-based multigrid with applications
2010
A posteriori error estimates for variational problems in the theory of viscous fluids
2016
The papers included in the thesis are focused on functional type a posteriori error estimates for the Stokes problem, the Stokes problem with friction type boundary conditions, the Oseen problem, and the anti-plane Bingham problem. In the summary of the thesis we consider only the Oseen problem. The papers present and justify special forms of these estimates which are suitable for the approximations generated by the Uzawa algorithm. The estimates are of two main types. Estimates of the first type use exact solutions obtained on the steps of the Uzawa algorithm. They show how errors encompassed in Uzawa approximations behave and have mainly theoretical meaning. Estimates of the second type o…
On second minimal subgroups of Sylow subgroups of finite groups
2011
A subgroup H of a finite group G is a partial CAP-subgroup of G if there is a chief series of G such that H either covers or avoids its chief factors. Partial cover and avoidance property has turned out to be very useful to clear up the group structure. In this paper, finite groups in which the second minimal subgroups of their Sylow p-subgroups, p a fixed prime, are partial CAP-subgroups are completely classified.
Characterization of strong chain geometries by their automorphism group
1992
A wide class of chain geometries is characterized by their automorphism group using properties of a distinguished involution.
A Gaschütz–Lubeseder Type Theorem in a Class of Locally Finite Groups
1999
The aim of this paper is to present a Gaschutz–Lubeseder type theorem in the class cL of all radical locally finite groups satisfying min−p for all primes p. Notice that these groups are countable and co-Hopfian by [1, (5.4.8)]. In retrospect, the theory of saturated formations of finite soluble groups began with the results of Gaschutz [3] in 1963. He introduced the concept of “covering subgroup” as a generalization of Sylow and Hall subgroups. These covering subgroups have many of the properties of Sylow and Hall subgroups other than the arithmetic ones. The main idea of Gaschutz’s work was concerned with group theoretical classes having the same properties. He defined a formation F to be…
Yhdistetyn kestävyys- ja voimaharjoittelun vaikutus pH:hon, laktaattiin ja submaksimaaliseen kestävyyssuorituskykyyn kahdella erilaisella ruokavaliol…
2013
Johdanto. Elimistön emäksisyyttä lisäämällä on pystytty parantamaan sekä anaerobista että aerobista suorituskykyä. Tämän tutkimuksen tarkoituksena oli selvittää, miten emästä tuottava normaaliproteiininen ja runsaasti kasviksia ja hedelmiä sisältävä ruokavalio vaikuttaa elimistön happo-emästasapainoon, submaksimaaliseen kestävyyssuorituskykyyn, pH:hon ja laktaatin tuottoon verrattuna happamuutta tuottavaan ruokavalioon 12 viikon yhdistetyn kestävyys- ja voimaharjoittelun aikana. Menetelmät. Tutkimukseen osallistui yhteensä 49 kuntoliikuntaa harrastavaa naista ja miestä, jotka jaettiin kahteen ruokavalioryhmään (Emäs / Hapan). Emäsryhmän ruokavalio oli arvioitu PRAL (potential renal acid loa…
Ancora sul paesaggio ...
2021
Il Paesaggio è una straordinaria e potente fonte di conoscenza e di informazioni sui luoghi perché contiene le tracce di tutte le trasformazioni che quei luoghi hanno subito, nel tempo, per opera della natura e dell’uomo; ha natura concettuale ancorché sostanziato da elementi fisici; è la sintesi dell’osservazione, descrizione e rappresentazione di un luogo attraverso lo scambio tra i processi che regolano identità e identificazione. Un luogo può essere rappresentato in molti modi e, quindi, può produrre più paesaggi. I luoghi si trasformano e, di conseguenza, si trasformano anche i paesaggi. Dunque, parlare di unicità del paesaggio e, ancor di più, di conservazione del paesaggio è un ossim…
Ambiente e clima della Sicilia durante gli ultimi 20 mila anni
2010
Environment and Climate in Sicily over the last 20, 000 years. (IT ISSN 0394-3356, 2010). A series of recent studies shed light on the central Mediterranean, and Sicily, climate and environment, starting from the last glacial maximum (about 20 ka cal BP). In the present paper, we examine most of these works, in order to unravel environmental changes of the past, mainly in terms of temperature, atmospheric pattern, precipitation, vegetation and faunal associations. The climate of the last glacial maximum was characterised by very low temperature and by repeated northerlies penetration, even during summer. Low precipitation values led to a steppe- or semisteppe-like vegetation pattern, domina…
Sylloge diplomatum Livoniam illustrantium
1817
Saturā/Im Inhalt: Tomus primus Sectio prima [1225- 1763], Bl.1- 173. Sectio secunda [1224- 1560]; Bl..174-277; Glossarium über die in diesem Werk vorkommene Wörter: Bl. [1a-8b]; Heraldica[: syst.-chronolog. Register]- Bl. [9a-22b]; Register der in diesem Werke vorkommenden Urkunden [chronolog.]- Bl.[23a-31a]. Tomus secundus Sectio prima: Bl.[1-2], 1-165b; Sectio secunda: Bl. 166-311b; Glossarium über die in diesem zweiten Tome vorkommenden Wörter: Bl. [312-328]; Heraldica : [Register]: Bl. 328b-330a, 331b-332b; Verzeichniss der hier vorkom[m]enden Urkunden [chronologisch angeordnet]: Bl.[333-336]. Materiālam pievienots Word.doc rokraksta apraksts un raksturojums.