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Presence of keel bone damage in laying hens, pullets and roosters of local chicken breeds
(2024-01-26)
In commercial laying hens, keel bone damage (KBD) is a severe health and welfare problem leading to pain, reduced mobility and decreased laying performance. Flocks of all production systems and hybrid lines can be affected. KBD is a multifactorial welfare issue and, among other factors, associated with a high laying performance which negatively affects the calcium deposit in the medullary bones. Therefore, mature hens of local breeds with much lower egg production than commercial hybrids may be expected to show less ...
Buch
Segregierte Quartiere – segregierte Freizeiträume
(Springer VS, 2024)
Dieses Open-Access-Buch stellt vor dem Hintergrund einer zunehmenden sozialen Segregation in deutschen Städten die Frage nach den Auswirkungen dieser sich verschärfenden räumlichen Polarisierung auf die Sozialisation von Jugendlichen. Die Arbeit geht dabei über den quartiersfixierten Ansatz der Nachbarschaftseffektforschung hinaus und untersucht, welche Räume in der Stadt von Berliner Jugendlichen in ihrer Freizeit tatsächlich genutzt werden und damit für sie sozialisationsrelevant sind. Der Fokus liegt auf dem ...
Aufsatz
Die Rolle der Beratung in der gesellschaftlichen Transformation zu mehr Nachhaltigkeit
(2024-01-10)
Die Welt befindet sich im Umbruch, die Transformationsforschung (Umweltbundesamt 2017) nimmt dies auf und denkt soziale und ökologische Faktoren zusammen, um die Dichotomie zwischen Profit und Gemeinwohl zu hinterfragen. Die tiefgreifenden Veränderungen führen zu einer überarbeiteten Strategieberatung. Sie wird iterativer und stellt sich stärker auf disruptive Entwicklungen ein. Kunden und externe Partner werden früher und intensiver eingebunden. Obwohl es einen Zweig sich entwickelnder Beratung von Nachhaltigkeit ...
Aufsatz
Universalist children’s services. From two-part to inclusive social infrastructure
(2024-01-11)
The scientific network “Universalist Children’s Services: From Two-Part to Inclusive Social Infrastructure,” funded by the German Research Foundation, comprises 20 researchers. Its purpose is to contribute to the development of a more inclusive design of the public children’s services system. To achieve this objective, the network integrates legal and educational perspectives in its analysis of the current structure of the children’s services system. The network’s starting point is the concept of universalist children’s ...
Aufsatz
Drought threatens agroforestry landscapes and dryland livelihoods in a North African hotspot of environmental change
(2024-02-08)
Dryland agroforestry is often hailed as a nature-based solution for rural people’s water- and climate-related struggles, yet appraisals of traditional agroforestry practices and interventions in Maghreb countries are scant. In this study, we appraise whether and how agroforestry delivers as a solution to Moroccan farmers’ plight with drought. Through an analysis of landscape observations, 75 qualitative interviews, and six group discussions, we show that the region’s mountain residents risk losing their livelihoods ...
Aufsatz
High Consistency Silicone Rubber Foams
(2024-04-23)
Silicone elastomers are high-performance plastics. In the extrusion process, only high-consistency silicone rubbers were used. In order to reduce the cost and weight, silicone rubbers can be foamed during processing. In this study, high-consistency silicone rubber is processed with different physical and chemical blowing agents. The resulting reaction kinetics, as well as the mechanical and morphological properties, had been investigated and compared with each other. This showed that the chemical blowing agent ...
Aufsatz
Weisfeiler-Lehman goes dynamic: An analysis of the expressive power of Graph Neural Networks for attributed and dynamic graphs
(2024-02-28)
Graph Neural Networks (GNNs) are a large class of relational models for graph processing. Recent theoretical studies on the expressive power of GNNs have focused on two issues. On the one hand, it has been proven that GNNs are as powerful as the Weisfeiler–Lehman test (1-WL) in their ability to distinguish graphs. Moreover, it has been shown that the equivalence enforced by 1-WL equals unfolding equivalence. On the other hand, GNNs turned out to be universal approximators on graphs modulo the constraints enforced by ...
Aufsatz
Recovered memories in psychotherapy: a survey of practicing psychotherapists in Germany
(2024-01-29)
We report on a survey of 258 psychotherapists from Germany, focusing on their experiences with memory recovery in general, suggestive therapy procedures, evaluations of recovered memories, and memory recovery in training and guidelines. Most therapists (78%) reported instances of memory recovery encompassing negative and positive childhood experiences, but usually in a minority of patients. Also, most therapists (82%) reported to have held assumptions about unremembered trauma. Patients who held these beliefs were ...
Aufsatz
Task-Level Checkpointing and Localized Recovery to Tolerate Permanent Node Failures for Nested Fork–Join Programs in Clusters
(2024-03-13)
Exascale supercomputers consist of millions of processing units, and this number is still growing. Therefore, hardware failures, such as permanent node failures, become increasingly frequent. They can be tolerated with system-level Checkpoint/Restart, which saves the whole application state transparently and, if needed, restarts the application from the saved state; or with application-level checkpointing, which saves only relevant data via explicit calls in the program. The former approach requires no additional ...
Buch
Universitäten und Hochschulen zwischen Beharrung und Reform
(Verlag Julius Klinkhardt, 2024-03)
Die Geschichte der Universitäten und Hochschulen ist seit dem Mittelalter durch ein so spannungsgeladenes wie fruchtbares Wechselspiel von Beharrung und Reform gekennzeichnet.
Dass diese ältesten Einrichtungen organisierter Wissensvermittlung bis heute existieren, hat mit ihrer Fähigkeit zu tun, die stets konkurrierenden konservativen und progressiven Elemente ihres Bildungsauftrags in der Regel gut ausbalancieren zu können.
Die im Band versammelten Beiträge untersuchen epochenübergreifend in bildungshistorischer ...