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Impacts of Climate Change on the Water Availability, Seasonality and Extremes in the Upper Indus Basin (UIB)
(2020-02-11)
Projecting future hydrology for the mountainous, highly glaciated upper Indus basin (UIB) is a challenging task because of uncertainties in future climate projections and issues with the coverage and quality of available reference climatic data and hydrological modelling approaches. This study attempts to address these issues by utilizing the semi-distributed hydrological model “Soil and water assessment tool” (SWAT) with new climate datasets and better spatial and altitudinal representation as well as a wider range ...
Aufsatz
A structural topic model approach to scientific reorientation of economics and chemistry after German reunification
(2020-08-05)
The detection of differences or similarities in large numbers of scientific publications is an open problem in scientometric research. In this paper we therefore develop and apply a machine learning approach based on structural topic modelling in combination with cosine similarity and a linear regression framework in order to identify differences in dissertation titles written at East and West German universities before and after German reunification. German reunification and its surrounding time period is used because ...
Aufsatz
Mapping the field of research on African higher education: a review of 6483 publications from 1980 to 2019
(2020-11-16)
Following a global trend, higher education (HE) in Africa has also become a complex enterprise, potentially demanding specific expertise in higher education research. However, despite this, there is a dearth of analysis into the state of research on African HE. This paper seeks to fill this gap by mapping and analysing African HE research. We undertake a systematic review of 6483 articles and books focusing on African HE published from 1980 to 2019 in indexed and non-indexed journals and book-publishers. We particularly ...
Aufsatz
Weight estimations with time-reversed point-light displays
(2020-11-24)
Interpreting other’s actions is a very important ability not only in social life, but also in interactive sports. Previous experiments have demonstrated good estimation performances for the weight of lifted objects through point-light displays. The basis for these performances is commonly assigned to the concept of motor simulation regarding observed actions. In this study, we investigated the weak version of the motor simulation hypothesis which claims that the goal of an observed action strongly influences its ...
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Temperature resistant fast InxGa1−xAs / GaAs quantum dot saturable absorber for the epitaxial integration into semiconductor surface emitting lasers
(2020-06-30)
Quantum-dot-based semiconductor saturable absorber mirrors (SESAMs) with fast response times were developed by molecular beam epitaxy (MBE). Using quantum dots (QDs) in the absorber region of the SESAMs instead of quantum wells, enables additional degrees of freedom in the design, the control of saturation parameters and the recovery dynamics. However, if one wants to integrate such a SESAM element into semiconductor surface emitting lasers such as a mode-locked integrated external-cavity surface-emitting laser ...
Aufsatz
Cross-π-conjugated enediyne with multioptic metal binding sites
(2020-10-20)
The synthesis of an enediyne molecule functionlized with different metal coordination sites in a cross-pconjugated fashion is reported. Using Pd-mediated cross-coupling reactions, 2,20-bipyridine units were attached at the periphery of diazafluorenemethylidene to obtain a multitopic ligand. UV-vis spectrosopic investigations along with electrochemical analyses reveal electronic communication along the conjugated path reflected in red-shifted absorption spectra and shifts of reduction potentials. The properties of the ...
Aufsatz
An interdisciplinary assessment of private conservation areas in the Western United States
(2020-02-20)
Conservation easements are the fastest growing private conservation strategy in the United States. However, mechanisms to assess private land conservation as well as their support by the general public are not well understood. This study uses the ecosystem services framework for assessing existing private lands in Idaho and identifies areas for future conservation easements. Using conservation targets of the land trust as a guide for selecting ecosystem services, we (a) mapped the spatial delivery of conservation ...
Aufsatz
Von der ostdeutschen zur marktliberalen Transformation
(2020-12-15)
Forschungen zum Bereich des Wohnens können dazu beitragen, in der Transformationsforschung subjektive Alltagserfahrungen mit politischen, ökonomischen und Macht-Faktoren zu vermitteln. In dem Kommentar wird dieses Plädoyer von Matthias Bernt und Andrej Holm aufgegriffen, das ähnlich auch die Historikerin Kerstin Brückweh formuliert hat. Um das Zusammenspiel subjektiver und objektiver Realitäten in der ostdeutschen Transformation zu verstehen, sollten Forschungen jedoch empirisch und nicht konzeptionell ausgerichtet ...
Aufsatz
Engineering Challenges Ahead for Robot Teamwork in Dynamic Environments
(2020-02-18)
The increasing number of robots around us creates a demand for connecting these robots in order to achieve goal-driven teamwork in heterogeneous multi-robot systems. In this paper, we focus on robot teamwork specifically in dynamic environments. While the conceptual modeling of multi-agent teamwork was studied extensively during the last two decades and commercial multi-agent applications were built based on the theoretical foundations, the steadily increasing use of autonomous robots in many application domains gave ...
Aufsatz
Von performativen Äußerungen zum Performative Turn. Performativitätstheorien zwischen Sprach- und Medienparadigma
(2020-11-10)
Der Begriff der Performativität hat in den Sozial- und Kulturwissenschaften der letzten Jahre eine beachtliche Karriere aufzuweisen, bleibt aber inhaltlich oftmals unbestimmt. Gleiches gilt für den proklamierten Performative Turn. Ausgehend von aktuellen Debatten um das Performativitätskonzept, wie sie etwa im Anschluss an die Schriften von Karen Barad und Michel Callon geführt werden, sollen diese Diskussionen im Beitrag genauer sortiert und einer kritischen Reflexion unterzogen werden. Er beginnt zunächst mit einer ...