Magyar Gyógypedagógiai Tanárok Közlönye 01 (1939) 09

A Magyar Gyógypedagógiai Tanárok Országos Egyesületének hivatalos lapja és szakfolyóirata 1. (41.) évfolyam, 9. szám, Budapest, 1939. november. Előzménye: a "Siketnémák és Vakok Oktatásügye a Siketnémák és Vakok Tanárai Országos Egyesületének hivatalos lapja" című folyóirat, valamint beolvadt a "Magyar Gyógypedagógia a Magyar Gyógypedagógiai Társaság folyóirata"

Magyar Gyógypedagógiai Tanárok Közlönye 01 (1939) 01

A Magyar Gyógypedagógiai Tanárok Országos Egyesületének hivatalos lapja és szakfolyóirata 1. (41.) évfolyam, 1. szám, Budapest, 1939. január. Előzménye: a "Siketnémák és Vakok Oktatásügye a Siketnémák és Vakok Tanárai Országos Egyesületének hivatalos lapja" című folyóirat, valamint beolvadt a "Magyar Gyógypedagógia a Magyar Gyógypedagógiai Társaság folyóirata"

Bubble ascent and rupture in mud volcanoes.

Large gas bubbles can reach the surface of pools of mud and lava where they burst, often through the formation and expansion of circular holes. Bursting bubbles release volatiles and generate spatter, and hence play a key role in volcanic degassing and volcanic edifice construction. Here, we study the ascent and rupture of bubbles using a combination of field observations at Pâclele Mici (Romania), laboratory experiments with mud from the Imperial Valley (California, USA), numerical simulations and theoretical models. Numerical simulations predict that bubbles ascend through the mud as elliptical caps that develop a dimple at the apex as they impinge on the free surface. We documented the rupture of bubbles in nature and under laboratory conditions using high-speed video. The bursting of mud bubbles starts with the nucleation of multiple holes, which form at a near-constant rate and in quick succession. The quasi-circular holes rapidly grow and coalesce, and the sheet evolves towards a filamentous structure that finally falls back into the mud pool, sometimes breaking up into droplets. The rate of expansion of holes in the sheet can be explained by a generalization of the Taylor-Culick theory, which is shown to hold independent of the fluid rheology

The future distribution of wetland birds breeding in Europe validated against observed changes in distribution

Publisher Copyright: © 2022 The Author(s). Published by IOP Publishing Ltd.Wetland bird species have been declining in population size worldwide as climate warming and land-use change affect their suitable habitats. We used species distribution models (SDMs) to predict changes in range dynamics for 64 non-passerine wetland birds breeding in Europe, including range size, position of centroid, and margins. We fitted the SDMs with data collected for the first European Breeding Bird Atlas and climate and land-use data to predict distributional changes over a century (the 1970s-2070s). The predicted annual changes were then compared to observed annual changes in range size and range centroid over a time period of 30 years using data from the second European Breeding Bird Atlas. Our models successfully predicted ca. 75% of the 64 bird species to contract their breeding range in the future, while the remaining species (mostly southerly breeding species) were predicted to expand their breeding ranges northward. The northern margins of southerly species and southern margins of northerly species, both, predicted to shift northward. Predicted changes in range size and shifts in range centroids were broadly positively associated with the observed changes, although some species deviated markedly from the predictions. The predicted average shift in core distributions was ca. 5 km yr-1 towards the north (5% northeast, 45% north, and 40% northwest), compared to a slower observed average shift of ca. 3.9 km yr-1. Predicted changes in range centroids were generally larger than observed changes, which suggests that bird distribution changes may lag behind environmental changes leading to 'climate debt'. We suggest that predictions of SDMs should be viewed as qualitative rather than quantitative outcomes, indicating that care should be taken concerning single species. Still, our results highlight the urgent need for management actions such as wetland creation and restoration to improve wetland birds' resilience to the expected environmental changes in the future.Peer reviewe

Ecological barriers mediate spatiotemporal shifts of bird communities at a continental scale

This study was supported by the Swiss National Science Foundation (grant P2BEP3_195232) and by the Academy of Finland (project 323527 and project 329251).Species' range shifts and local extinctions caused by climate change lead to community composition changes. At large spatial scales, ecological barriers, such as biome boundaries, coastlines, and elevation, can influence a community's ability to shift in response to climate change. Yet, ecological barriers are rarely considered in climate change studies, potentially hindering predictions of biodiversity shifts. We used data from two consecutive European breeding bird atlases to calculate the geographic distance and direction between communities in the 1980s and their compositional best match in the 2010s and modeled their response to barriers. The ecological barriers affected both the distance and direction of bird community composition shifts, with coastlines and elevation having the strongest influence. Our results underscore the relevance of combining ecological barriers and community shift projections for identifying the forces hindering community adjustments under global change. Notably, due to (macro)ecological barriers, communities are not able to track their climatic niches, which may lead to drastic changes, and potential losses, in community compositions in the future.Publisher PDFPeer reviewe

The Development of Competencies for Employability Digital Competencies : Influence of the Industry 4.0 Concept on Digital Competencies

The term called Industry 4.0 (I4.0) is an umbrella-concept, which encompasses several elements from the latest technological trends influencing the human workforce and education. But the questions arise: Does the industry 4.0 concept itself change workforce competencies? What is the impact on education? Thus far, only the technological aspects have been investigated thoroughly, despite their well-known, and strong, influence on the economy and society. This study addresses the interactions, dependencies, and correlations between certain areas of social existence, as expectations change regarding human competencies and their continued role in economic sectors and technological innovation. The role of the human factor within society is unquestionable as we start to understand why industrial revolutions have appeared. Fundamentally, it is always human concerns that stimulate change and it is human/social aspects that are heavily influenced by the same changes. As the I4.0 concept has an influence not just on how products are manufactured but also on the practices of consuming “products”, governments, research institutes, education systems, and organisations all have a crucial role to play in managing the massive wave of change. We believe that the concept should be more deeply analysed and understood, as it might give rise to a new complex terminology for techno-social change, which eventually would feed into achieving economic goals more efficiently

Real effective potentials for phase transitions in models with extended scalar sectors

Abstract The effective potential obtained by loop expansion is usually not real in the range of field values explored by its minima during a phase transition. We apply the optimized perturbation theory in a fixed gauge to singlet scalar extensions of the Standard Model in order to calculate a one-loop effective potential that is real by construction. We test this computational scheme by comparing such a potential obtained in Landau gauge to that derived based on the Higgs pole mass. We carry out the latter construction by imposing physical renormalization conditions, which yields a potential without residual regularization scale dependence. We use our effective potential to study the parameter dependence of the critical temperatures in a two-step phase transition of the form (0, 0) → (0, w′) → (v, w) that occurs for decreasing temperature in scalar extensions of the SM with two vacuum expectation values v and w