Austrian Academy of Sciences

Elektronisches Publikationsportal der Österreichischen Akademie der Wissenschaften
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    Global Reconstruction of Educational Attainment, 1950 to 2015: Methodology and Assessment - Annex tables and data documentation

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    This paper documents the rationale, the data and the methodology for reconstructing the population of 185 countries by levels of educational attainment for the period 1950–2015, by age and sex. The reconstruction uses four main input types for each country: (1) The most recent and reliable education structure by age and sex, (2) any reliable historical education data by age and sex to use as marker points in the reconstruction to increase output accuracy, (3) a set of age- and sex-specific mortality differentials and education transition by education and (4) population estimates by age and sex. The methodology relies on the fact that education is acquired at young ages and does not change much over the life course. In the first part we present the reconstruction principle. In the second one, we document the methodology and the data. The third section compares the reconstructed estimates to other existing estimates including the past reconstruction effort of the Wittgenstein Centre for Demography and Human Capital. The data are available at: www.wittgensteincentre.org/dataexplorer (version 2.0). Supplementary to this Working Paper a detailed data documentation Excel file can be downloaded via: https://www.oeaw.ac.at/vid/publications/serial-publications/vid-working-papers/

    Religious Denominations in Vienna and Austria: Baseline Study for 2016 - Scenarios until 2046

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    The publication presents the results of the research project “Religious Denominations inVienna & Austria: Baseline study for 2016 – Scenarios until 2046” conducted by theVienna Institute of Demography of the Austrian Academy of Sciences. The aim of thisstudy project was twofold: Firstly, to estimate the religious composition of the populationof Austria and Vienna in 2016 taking into account the most recent migration movements;and secondly, to project the population of Austria and Vienna from 2016 to 2046 based onseveral scenarios related mostly to the three major forces affecting religious composition,migration (including asylum-seekers), differential fertility, and religious conversion.While the projections demonstrate some of the possible futures that Austria and its capitalcity could experience in the coming decades, and those are all quite dissimilar, they alsoshow that religious diversity is bound to increase, and there are no reasons to think thatany of the trends that have been in place already for several decades in the country willstop and that the country would move back to the situation of the early 1970s

    Automatic Landslide Detection Using Bi-Temporal Sentinel 2 Imagery. GI_Forum|GI_Forum 2021, Volume 1|

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    Landslide inventory data sets are required for any landslide susceptibility mapping and prediction approaches. However, generating accurate landslide inventory data sets depends on applied methods and quality of input data, for example spatial resolution for satellite imagery. Therefore, the accuracy and availability of inventories vary in different studies. This study evaluated a strategy of sudden landslide identification product (SLIP) for landslide detection using Bi-Temporal Sentinel 2 Imagery and ALOS Digital Elevation Model (DEM). The resulting landslide detection map was then compared with an improved version of SLIP based on a fuzzy overlay. The resulting probability map was classified into three classes using the natural breaks method; the third class with the highest probability was extracted as the final map. The accuracy assessment stage demonstrated that using the improved version increased the accuracy by 16% compared to the SLIP method

    Mapping Flooded Paddy-Rice Fields in the Landscape between Turin and Milan: A GIS-Based Method for Detecting Scenic Routes for Experiential Tourism. GI_Forum|GI_Forum 2021, Volume 1|

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    The current research aims to explore the potential of ESA Sentinel-2 time-series satellite imagery, for detecting the seasonal landscape changes of paddy-rice fields, in the north-west of Italy, by using GIS mapping tools. On a regional scale context, paddy-rice mapping has several implications for agricultural monitoring, precision farming, food production, water management and climate change. However, it also concerns theirs high scenic value in the landscape perception, which can be a great resource for sustainable tourism. The defining characteristic of paddy-rice is that rice plants grow on flooded soils. In the field of slow tourism, such a temporary site-specific condition of the landscape can become an unconventional tourist destination. The research has been applied to territories in between cities: Turin and Milan, where the phenomenon of paddy-rice flooding, in the spring season, generates an outstanding scenic perception of the rural landscape. The research shows the effectiveness of the GIS workflow to compute the vegetation indices, which are sensitive for mapping flooded paddy-rice fields. The final outcome is a thematic map highlighting the scenic routes in the existing road network that allows experiencing such seasonal landscape conditions

    Pletzer, Johann (Hans)

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    * 6.1.1858 Mittersill/Sb, † 8.12.1918 Salzburg. Fachlehrer, Chorleiter, Komponist

    Optimal Dirichlet control of partial differential equations on networks. ETNA - Electronic Transactions on Numerical Analysis

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    Differential equations on metric graphs can describe many phenomena in the physical world but also the spread of information on social media. To efficiently compute the optimal setup of the differential equation for a given desired state is a challenging numerical analysis task. In this work, we focus on the task of solving an optimization problem subject to a linear differential equation on a metric graph with the control defined on a small set of Dirichlet nodes. We discuss the discretization by finite elements and provide rigorous error bounds as well as an efficient preconditioning strategy to deal with the large-scale case. We show in various examples that the method performs very robustly

    The Trapeza Cemetery near Aigion: its Western Connection in a Diachronic Perspective. Orea|Punta di Zambrone I Oriental and European Archaeology Volume 17|

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    In this contribution some results from the recent fieldwork at the Mycenaean chamber tombs cemetery of the Trapeza of Aigion are presented; in particular the occupation of Tomb 1 is contextualised within a period ranging from the 15th to the 11th century BC. The re-use of the tomb in the Post-palatial period, after the critical date of 1200 BC, seems to have coincided with a time of expansion and cultural vitality of the small community of the Trapeza, most probably as a consequence of the increasing importance of the Corinthian Sea in the east–west-oriented relationships on a Mediterranean scale. The diachronic perspective adopted in this study permits us to focus on an intense Aegean–Adriatic interaction during the last phase of burial occupation in LH IIIC Late/SM or advanced Italian Final Bronze Age. The study of the pottery in its context reveals a phenomenon of convergence in the field of ritual practices and symbolic behaviours, implying social exchange and mobility of both ideas and people along the Adriatic and Ionian seas

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    Elektronisches Publikationsportal der Österreichischen Akademie der Wissenschaften is based in Austria
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