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Algorithm for fast evaluation of in-plane fiber orientation in reinforced plastics using light microscopy images
(2023-09-26)
Methods for evaluating the orientation of carbon fibers in reinforced plastics vary in complexity and are application specific. Here, we report an algorithm that quickly evaluates in-plane fiber orientation based on determining the correlation coefficient of adjacent regions in microscopy images. The result is not the fiber orientation of individual fibers, but the principal fiber orientation of small image areas. This method is applicable to large areas due to its low computation time and captures varying fiber ...
Aufsatz
Embedding plural values in value chains to enhance sustainability in the management of cork oak landscapes
(2023-07-19)
Context
The management of Portuguese agroforestry landscapes is currently focused on specialised cork and cattle production. Sustainable landscape management is increasingly discussed as an effective option to foster the multifunctionality of these landscapes. Such management requires consideration of multiple values connected to the landscape and to the products stemming from it.
Objectives
The aim of this study is to (1) assess the importance of specific values related to cork and to the cork production ...
Aufsatz
Multilingualism is associated with small task-specific advantages in cognitive performance of older adults
(2023-10-07)
The protective effects of multiple language knowledge on the maintenance of cognitive functions in older adults have been discussed controversially, among others, because of methodological inconsistencies between studies. In a sample of N = 528 German monolinguals and multilinguals (speaking two or more languages) older than 60 years, this study examined (1) whether speaking multiple languages is positively related to performance on tasks of interference suppression, working memory, concept shifting, and phonemic and ...
Aufsatz
Inside the world of stepsiblings: Linking global production networks to sustainable supply chain management
(2023-07-31)
The theoretical foundation of (sustainable) supply chain management (SSCM) is an issue of frequent debate. Integrating it with the Global Production Networks (GPN), which is a kind of stepsibling, can help expanding the theoretical foundations of SSCM. The purpose of this paper is to explore how the GPN approach links to SSCM in analysing and explaining interorganizational sustainability. This paper is conceptual. Five central GPN constructs are identified: (1) the emerging supply chain structures and sustainability; ...
Aufsatz
High-Strength Dissimilar Welds Between a NiTi Shape Memory Alloy and Titanium Obtained by Intermixing Niobium Using Pulsed Laser Beam Welding
(2023-11-17)
Joining of NiTi shape memory alloys with commercially pure titanium (Ti) is of great interest for manifold industrial applications. However, dissimilar fusion welding of these materials is associated with the formation of extremely brittle intermetallic compounds, e.g., Ti2Ni and TiNi3, which drastically limit the mechanical properties of NiTi/Ti joints. The present investigation seeks to improve both chemical compatibility and mechanical performance through intermixing of a niobium foil as filler material into a ...
Aufsatz
Molecular-frame photoelectron angular distributions during double core-hole generation in O₂ and N₂ molecules
(2023-09-15)
Angular distributions of photoelectrons emitted upon double core-hole (DCH) generation in nitrogen and oxygen molecules are studied theoretically in the frame of a molecular reference. The respective electronic structure calculations are performed by the single center method for photoelectron kinetic energies up to 40 eV in the relaxed-core Hartree–Fock approximation. The molecular frame photoelectron angular distributions are computed for single-site and two-site DCH creation processes and further analyzed for ...
Aufsatz
Suffizienz – Psychische Ressourcen – Transformation
(2023-08-07)
In diesem Beitrag wird ein Spannungsbogen aufgebaut, der von der aktuellen sozio-ökologischen Krise bis hin zur Coachingpraxis leiten soll. Nach einer Erörterung der Grundproblematik der derzeitigen Krise werden zentrale Konzepte der Nachhaltigkeitsforschung vorgestellt, die wichtig sind, um im Kontext Nachhaltigkeit sprechfähig zu sein. Sodann wird die spezifische Rolle von Unternehmen in der Agenda 2030 zu klären versucht. Darauf folgt eine Erörterung, wie Konzepte aus der Psychologie der nachhaltigen Entwicklung ...
Aufsatz
Anthropogenic and natural disturbances increase local genetic diversity in an early spring geophyte (Ficaria verna Huds)
(2023-12-26)
The tetraploid Ficaria verna is a common spring geophyte in central Europe and is considered invasive in the USA and Canada. It is considered an almost seed-sterile taxon, relying on vegetative reproduction by underground tubers and aerial bulbils. Recent studies have revealed high levels of population genetic diversity in F. verna, raising the question of how genetic diversity is maintained and which factors may be responsible for the observed patterns. Polymorphic nuclear microsatellite markers were established to ...
Aufsatz
Predicting Lifetime Suicide Attempts in a Community Sample of Adolescents Using Machine Learning Algorithms
(2023-04-24)
Suicide is a major global health concern and a prominent cause of death in adolescents. Previous research on suicide prediction has mainly focused on clinical or adult samples. To prevent suicides at an early stage, however, it is important to screen for risk factors in a community sample of adolescents. We compared the accuracy of logistic regressions, elastic net regressions, and gradient boosting machines in predicting suicide attempts by 17-year-olds in the Millennium Cohort Study (N = 7,347), combining a large ...
Aufsatz
Perfect apples or sustainable production?—Consumer perspectives from Germany
(2023-08-23)
In recent years, environmental problems, such as resource depletion and biodiversity loss, have come to the forefront of society's attention. Consumption of fruits and vegetables from extensive production systems could decrease food loss and increase biodiversity and more sustainable resource use. However, fruits and vegetables from extensive production systems are not always of perfect external quality, and hence, rejected by consumers. To increase acceptance of imperfect fruits, this study aims to better understand ...