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Demut gegenüber der Fehlbarkeit des Handelns im Business-Coaching (Humility in the face of the fallibility of action in business coaching)
(2021-08-04)
Rezension zu Heidi Möller, Jannik Zimmermann (2020): Schwierige Situationen im Business-Coaching. Praxisbeispiele, Perspektiven und Handlungsmöglichkeiten. Wiesbaden: Springer, 206 Seiten, 39,99 €.
Aufsatz
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Extension of Gap Bridgeability and Prevention of Oxide Lines in the Welding Seam through Application of Tools with Multi-Welding Pins
(2021-07-30)
Friction stir welding has become important in many areas of production and is increasingly used for joining aluminum components. For long welding seams, conventional tools with only one welding pin reach their technical limitations due to low gap bridgeability. When welding aluminum, the stirred in surface layers, such as oxides, lead to a decrease in static and dynamic strength since linear accumulations are formed in the welding seam. The aim of the present study is to increase the gap bridgeability using tools ...
Aufsatz
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Technological Frames in the Digital Age: Theory, Measurement Instrument, and Future Research Areas
(2021-05-21)
Digital technologies fuel technological change that generates substantial uncertainty and complexity. Corporate actors rely on their technological frames to cope with these challenges. Technological frames determine how actors interpret, assess, and shape a technology’s development, usage, and trajectory. However, the research fails to provide insights into the microfoundations that can explain the consequences of heterogeneity in technological frames. We argue that this research gap is due to a lack of a proper ...
Aufsatz
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No Robust Effect of Distributed Practice on the Short- and Long-Term Retention of Mathematical Procedures
(2020-04-29)
We investigated the effect of distributed practice and more specifically the “lag effect” concerning the retention of mathematical procedures. The lag effect implies that longer retention intervals benefit from longer inter-study intervals (ISIs). University students (N = 235) first learned how to solve permutation tasks and then practiced this procedure with an ISI of zero (i.e., massed), one, or 11 days. The final test took place after one or five weeks. All conditions were manipulated between-subjects. Contrary ...
Aufsatz
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The Role of Institutional Uncertainty for Social Sustainability of Companies and Supply Chains
(2020-04-06)
Global sourcing largely occurs from so-called emerging markets and developing economies (EMDEs). In these contexts, substantial leverage effects for sustainability in supply chains (SCs) can be expected by reducing adverse impacts on society and minimising related risks. For this ethical end, an adequate understanding of the respective sourcing contexts is fundamental. This case study of South Africa’s (SA) mining sector uses institutional theory and the notion of institutional uncertainty to empirically analyse the ...
Aufsatz
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Biomass Performance and Competition Effects in an Established Temperate Agroforestry System of Willow and Grassland—Results of the 2nd Rotation
(2020-11-19)
Agroforestry systems (AFSs) are promoted as environmentally friendly and climate-change-resilient cultivation systems with the potential of increasing ecosystem services. Especially under temperate climatic conditions, the implementation in agricultural practice is low so far, inter alia due to the lack of knowledge regarding longer-term effects of such systems. This study investigated biomass yields and crop development during the second rotation of an alley cropping system with willows (clone “Tordis” ((Salix ...
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Diversity of Trametes (Polyporales, Basidiomycota) in tropical Benin and description of new species Trametes parvispora
(2020-03-10)
Trametes is a globally distributed genus of white-rot polypores and well sampled in temperate and boreal areas. However, the diversity, taxonomy, and phylogenetic positions of Trametes spp. are poorly known in tropical Africa. This study aims at documenting the diversity of Trametes species in Benin (tropical Africa) and their phylogenetic positions with a focus on the T. elegans species complex. Therefore, we collected specimens of Trametes from different forest types across Benin. To infer phylogenetic relationships ...
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Single-wall carbon nanotubes-chitosan nanocomposites: Surface wettability, mechanical and thermal properties
(2021-04-14)
Functionalized single-wall carbon nanotubes (f-SWCN) are dispersed in chitosan films by self-assembly of both components in aqueous media. This carbon form is a promising nanofiller to achieve nanocomposites with refined thermal, mechanical and surface features. In this study, we investigated the influence of functionalized single-wall carbon nanotubes concentration on the resulting properties of the nanocomposites structures. Functionalized single-wall carbon nanotubes are dispersed on a molecular scale in the ...
Aufsatz
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The “Nested” Power of TNCs: Smallholders’ Biggest Challenge
(2021-07-15)
The plight of smallholder farmers vis-à-vis their highly concentrated input providers and distributors is well known. This article highlights the embeddedness of dyadic power relations within broader economic, political, and social institutions governing the relations between transnational corporations (TNCs) and smallholders. It provides a Gramscian gaze into the deep roots of TNCs in the neoliberal historic bloc and argues that challenging the power of the TNCs requires a comprehensive strategy that goes much beyond ...
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A note on dual prehomomorphisms from a group into the Margolis–Meakin expansion of a group
(2020-08-07)
We give a category-free order theoretic variant of a key result in Auinger and Szendrei (J Pure Appl Algebra 204(3):493–506, 2006) and illustrate how it might be used to compute whether a finite X-generated group H admits a canonical dual prehomomorphism into the Margolis–Meakin expansion M(G) of a finite X-generated group G. We show that for G the Klein four-group a suitable H must be of exponent 6 at least and recapture a result of Szakács.