Nové mincovní nálezy z dolního Podyjí v kontextu raně středověké Moravy

V článku jsou vyhodnoceny nálezy středověkých mincí z konce 10. až počátku 13. stol., které byly v posledním desetiletí učiněny v dolním Podyjí, a to jak při archeologických terénních výzkumech, tak povrchovým průzkumem s pomocí detektoru kovů. Soubor čítající více než 170 mincí je významný pro poznání peněžního oběhu na Moravě v raném středověku. Zejména nálezy jednotlivých mincí byly donedávna vzácné. Pět mincí z polohy Kostice – Zadní hrúd a blízkého okolí pochází z 2. pol. 10. století. Většinou se jedná o ražby datované před r. 976, doposud jediné z oblasti dolního Podyjí a Pomoraví, včetně přilehlé části rakouského Podunají. Nálezy mincí z 1. pol. 11. stol. ukazují na významnou roli uherské mince ve struktuře oběživa na Moravě. Od poloviny 11. stol. nastupují početné mince domácí provenience, ražné především olomouckými Přemyslovci.The article evaluates medieval coins from the end of the tenth century to the beginning of the thirteenth century, found over the past decade in the lower Dyje (Thaya) River region (the southeast part of the Czech Republic) during both terrain excavations and surface surveys with the use of a metal detector. The assemblage of more than 170 coins is an important source for learning about monetary circulation in Moravia at the Early Middle Ages. Finds of individual coins were especially rare until recently. Five coins from the Kostice – Zadní hrúd site and the surrounding area date to the second half of the tenth century. These were mostly coins struck before 976, thus far the only ones from the lower Dyje River and Morava River regions, including adjacent Austrian parts of the Danubian Basin. Coin finds from the first half of the eleventh century indicate the prominent role of Hungarian coins in the structure of currency in Moravia. Numerous coins of domestic provenance, minted mostly by the Olomouc Přemyslids, start appearing in the middle of the 11th century

Evidence for spared attention to faces in 7-month-old infants after prenatal exposure to antiepileptic drugs

Introduction: Prenatal antiepileptic drug (AED) exposure is associated with an increased risk of cognitive impairment and autism spectrum disorders detected mainly at the age of two to six years. We examined whether the developitiental aberrations associated with prenatal AED exposure-could be-detected already in infancy and whether effects on visual attention can be observed at this early age. Material and methods: We compared a prospective cohort of infants with in utero exposure to AED (n = 56) with infants without drug exposures (n = 62). The assessments performed at the age of seven months included standardized neurodevelopmental scores (Griffiths Mental Developmental Scale and Hammersmith Infant Neurological Examination) as well as a novel eye-tracking-based test for visual attention and orienting to faces. Background information included prospective collection of AED exposure data, pregnancy outcome, neuropsychological evaluation of the mothers, and information on maternal epilepsy type. Results: Carbamazepine, oxcarbazepine, and valproate, but not lamotrigine or levetiracetam, were associated with impaired early language abilities at the age of seven months. The general speed of visuospatial orienting or attentional bias for faces measured by eye-tracker-based tests did not differ between AED-exposed and control infants. Discussion: Our findings support the idea that prenatal AED exposure may impair verbal abilities, and this effect may be detected already in infancy. In contrast, the early development of attention to faces was spared after in utero AED exposure. (C) 2016 Elsevier Inc. All rights reserved.Peer reviewe

Healthy full-term infants' brain responses to emotionally and linguistically relevant sounds using a multi-feature mismatch negativity (MMN) paradigm

We evaluated the feasibility of a multi-feature mismatch negativity (MMN) paradigm in studying auditory processing of healthy newborns. The aim was to examine the automatic change-detection and processing of semantic and emotional information in speech in newborns. Brain responses of 202 healthy newborns were recorded with a multi-feature paradigm including a Finnish bi-syllabic pseudo-word/ta-ta/as a standard stimulus, six linguistically relevant deviant stimuli and three emotionally relevant stimuli (happy, sad, angry). Clear responses to emotional sounds were found already at the early latency window 100-200 ms, whereas responses to linguistically relevant minor changes and emotional stimuli at the later latency window 300-500 ms did not reach significance. Moreover, significant interaction between gender and emotional stimuli was found in the early latency window. Further studies on using multi-feature paradigms with linguistic and emotional stimuli in newborns are needed, especially those containing of follow-ups, enabling the assessment of the predictive value of early variations between subjects.Peer reviewe

Stabilised finite element method for Stokes problem with nonlinear slip condition

This work introduces a stabilised finite element formulation for the Stokes flow problem with a nonlinear slip boundary condition of friction type. The boundary condition is enforced with the help of an additional Lagrange multiplier and the stabilised formulation is based on simultaneously stabilising both the pressure and the Lagrange multiplier. We establish the stability and the a priori error analyses, and perform a numerical convergence study in order to verify the theory

On Nitsche's method for elastic contact problems

We show quasi-optimality and a posteriori error estimates for the frictionless contact problem between two elastic bodies with a zero-gap function. The analysis is based on interpreting Nitsche's method as a stabilised finite element method for which the error estimates can be obtained with minimal regularity assumptions and without the saturation assumption. We present three different Nitsche's mortaring techniques for the contact boundary each corresponding to a different stabilising term. Our numerical experiments show the robustness of Nitsche's method and corroborates the efficiency of the a posteriori error estimators

Mortaring for linear elasticity using mixed and stabilized finite elements

The purpose of this work is to study mortar methods for linear elasticity using standard low order finite element spaces. Based on residual stabilization, we introduce a stabilized mortar method for linear elasticity and compare it to the unstabilized mixed mortar method. For simplicity, both methods use a Lagrange multiplier defined on a trace mesh inherited from one side of the interface only. We derive a quasi-optimality estimate for the stabilized method and present the stability criteria of the mixed $P_1-P_1$ approximation. Our numerical results demonstrate the stability and the convergence of the methods for tie contact problems. Moreover, the results show that the mixed method can be successfully extended to three dimensional problems