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Aufsatz
Low-Cycle-Fatigue Performance of Stress-Aged EN AW-7075 Alloy
(2023-05-05)
The effect of a novel heat treatment, that is, aging under superimposed external stress, on the fatigue performance and microstructural evolution of a high-strength aluminum alloy (EN AW-7075) is presented. Stress aging, a combination of heat treatment and superimposed external stress, can enhance the mechanical properties of EN AW-7075 under monotonic loading due to the acceleration of precipitation kinetics. Scanning electron microscopy (SEM) and scanning transmission electron microscopy (STEM) reveal that a longer ...
Aufsatz
On the Reliability of Automated Analysis of Fracture Surfaces Using a Novel Computer Vision-Based Tool
(2023-08-05)
Fracture surface analysis is of utmost importance with respect to structural integrity of metallic materials. This especially holds true for additively manufactured materials. Despite an increasing trend of automatization of testing methods, the analysis and classification of fatigue fracture surface images is commonly done manually by experts. Although this leads to correct results in most cases, it has several disadvantages, e.g., the need of a huge knowledge base to interpret images correctly. In present work, an ...
Aufsatz
Cyclic Superelastic Behavior of Iron-Based Fe-Ni-Co-Al-Ti-Nb Shape Memory Alloy
(2023-01-03)
Iron-based shape memory alloys came into focus as promising candidate materials for large-scale structural applications owing to their cost-efficiency. In the present work, the superelastic properties of a recently introduced Fe-Ni-Co-Al-Ti-Nb shape memory alloy are investigated. For 〈001〉-oriented single-crystalline material in aged condition (650 °C/6 h), an incremental strain test reveals excellent superelasticity at −130 °C with fully reversible strains up to about 6%. Under cycling loading at different test ...
Rezension
[Rezension zu:] David Juste, Benno van Dalen, Dag Nikolaus Hasse u. Charles Burnett (Hgg.), Ptolemy’s Science of the Stars in the Middle Ages (Ptolemaeus Arabus et Latinus-Studies 1). Turnhout, Brepols 2020. X, 463 S. 11 s/w-Abb. 24 Tab.
(2023-12-14)
Rezension von Ingrid Baumgärtner zu: David Juste, Benno van Dalen, Dag Nikolaus Hasse u. Charles Burnett (Hgg.), Ptolemy’s Science of the Stars in the Middle Ages (Ptolemaeus Arabus et Latinus-Studies 1). Turnhout, Brepols 2020. X, 463 S. 11 s/w-Abb. 24 Tab.
Beitrag zu Periodikum
Europe’s authoritarian shift
(2023)
The European Union prides itself for being a legal order and a supranational organisation created through, and organised around, a specific institutional framework and an ordoliberal-inspired “rules against discretion” approach. Theories of ‘integration through law’ abound and the European Monetary Union (EMU) remains a unique common currency area structured within a constitutional framework. Officially, the formal priority of treaties, mandates and the European legal framework are presented as the sine qua non of ...
Video
LAMBAYEQUE – TERRITORIO Y CLIMA
(2023-04-28)
La amplia planicie aluvial costera de Lambayeque históricamente ofrece buenas condiciones para la explotación agrícola, permitiendo el florecimiento de las culturas que allí se asentaron – muy a pesar de las lluvias del Fenómeno del Niño, que cíclicamente devastan la infraestructura de riego, vial, de producción y habitacional.
La conferencia presenta las estrategias de ocupación del territorio desarrolladas por cada época para enfrentar las destrucciones por lluvia e inundación.
Alberto Risco Vega
- Arquitecto ...
Aufsatz
Continuous Feature Networks: A Novel Method to Process Irregularly and Inconsistently Sampled Data With Position-Dependent Features
(2023-12-30)
Continuous Kernels have been a recent development in convolutional neural networks. Such kernels are used to process data sampled at different resolutions as well as irregularly and inconsistently sampled data. Convolutional neural networks have the property of translational invariance (e.g., features are detected regardless of their position in the measurement domain), which is unsuitable if the position of detected features is relevant for the prediction task. However, the capabilities of continuous kernels to ...
Konferenzveröffentlichung
Utilizing Continuous Kernels for Processing Irregularly and Inconsistently Sampled Data With Position-Dependent Features
(2023-03-13)
Continuous Kernels have been a recent development in convolutional neural networks. Such kernels are used to process data sampled at different resolutions as well as irregularly and inconsistently sampled data. Convolutional neural networks have the property of translational invariance (e.g., features are detected regardless of their position in the measurement domain), which is unsuitable for certain types of data, where the position of detected features is relevant. However, the capabilities of continuous kernels ...
Rezension
[Rezension zu:] Alfred Hiatt, Dislocations. Maps, Classical Tradition, and Spatial Play in the European Middle Ages (Studies and Texts 218). Toronto, Pontifical Institute of Mediaeval Studies. Turnhout, Brepols 2020. XII, 347 S. 42 farb. Abb.
(2023-07-06)
Rezension von Ingrid Baumgärtner zu: Alfred Hiatt, Dislocations. Maps, Classical Tradition, and Spatial Play in the European Middle Ages (Studies and Texts 218). Toronto, Pontifical Institute of Mediaeval Studies. Turnhout, Brepols 2020. XII, 347 S. 42 farb. Abb.
Working paper
Mathematical Management
(2023-07-14)
Der Aufstieg des Fachgebietes Operations Research, das mathematische Modelle zur Steuerung von Wirtschaftsunternehmen bereitstellt, in der politischen Wissenskultur von Cold War Science der USA nach 1945 wird aufgezeigt und dann übergeleitet zur Institutionalisierung von Operations Research in den Universitäten von Europa und der Bundesrepublik Deutschland. Die Vorläuferorganisationen zur Deutschen Gesellschaft für Operations Research werden dargestellt und das Zusammenspiel der Jahrestagung dieser Gesellschaft mit ...