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New species and a new record of Phylloporia from Benin
(2021-04-23)
Species of the wood-decay genus Phylloporia (Hymenochaetaceae, Hymenochaetales, Basidiomycota) are widely distributed in the tropics. Phylloporia species are, however, morphologically and ecologically diverse, which makes morphology-based species identification challenging. In this study, we re-examined species of Phylloporia reported from Benin (West Africa). Using an integrative approach combining morphology, ecology, and phylogenetic analyses, we describe Phylloporia beninensis sp. nov. and report Phylloporia ...
Aufsatz
Sugar Beet Damage Detection during Harvesting Using Different Convolutional Neural Network Models
(2021-11-09)
Mechanical damages of sugar beet during harvesting affects the quality of the final products and sugar yield. The mechanical damage of sugar beet is assessed randomly by operators of harvesters and can depend on the subjective opinion and experience of the operator due to the complexity of the harvester machines. Thus, the main aim of this study was to determine whether a digital two-dimensional imaging system coupled with convolutional neural network (CNN) techniques could be utilized to detect visible mechanical ...
Aufsatz
Mirau-Based CSI with Oscillating Reference Mirror for Vibration Compensation in In-Process Applications
(2021-10-15)
We present a Mirau-type coherence scanning interferometer (CSI) with an oscillating reference mirror and an integrated interferometric distance sensor (IDS) sharing the optical path with the CSI. The IDS works simultaneously with the CSI and measures the distance changes during the depth scanning process with high temporal resolution. The additional information acquired by the IDS is used to correct the CSI data disturbed by unwanted distance changes due to environmental vibrations subsequent to the measurement. Due ...
Aufsatz
Negative brand meaning co‐creation in social media brand communities: A laddering approach using NVivo
(2019-10-10)
Social media brand communities (SMBCs) have been heralded for their co‐creative, participatory potential whereby consumers actively contribute to the proliferation of meaningful brand avenues in a virtuously circular relationship with brands. Elevated loyalty and enhanced brand equity have been posited repeatedly as likely outcomes of a positively engaged community of brand aficionados. However, evidence to the contrary as negative brand co‐creation or brand co‐destruction has been progressively piling up in the ...
Aufsatz
Tensions in sustainable warehousing: including the blue-collar perspective on automation and ergonomic workplace design
(2020-05-14)
In many industrial countries, demographic changes towards an aging society go hand in hand with the need for ergonomic workplaces. Therefore, it is necessary to rethink workplace designs and work processes, particularly in industrial professions, such as logistics. As logistics activities are still characterized by a high amount of manual effort, they represent a suitable field for gaining empirical insights into the implementation of automation and ergonomic practices to inform social sustainable warehousing logistics ...
Aufsatz
Stakeholder management in sustainable supply chains: A case study of the bioenergy industry
(2021-05-01)
Engaging with stakeholders and managing their issues when striving for a sustainable supply chain (SC) is a significant challenge. Although most studies on sustainable supply chain management (SSCM) consider stakeholder management necessary, little is known about related stakeholder management practices in SSCM. Thus, this paper seeks to enrich the theoretical debate on stakeholder management practices in SSCM through a case study approach to bioenergy SCs in Chile. Based on 28 interviews with SC actors and representatives ...
Aufsatz
Smallholders’ Challenges: Realizing Peri-Urban Opportunities in Bengaluru
(2021-09-10)
Urban expansion creates potential for increased incomes among previously rural smallholders from sources other than traditional agriculture. Harnessing this potential, however, requires investments into agricultural upgrading or non-farm activities. The article addresses the question concerning to what extent these investments are realised in the peri-urban space of Bengaluru. Its answers are based on a review of the literature and extensive field surveys in two differentially developed districts assessing the ...
Aufsatz
Combining Genetic Gain and Diversity in Plant Breeding: Heritability of Root Selection in Wheat Populations
(2021-11-18)
To increase the resilience of agroecological farming systems against weeds, pests, and pathogens, evolutionary breeding of diversified crop populations is highly promising. A fundamental challenge in population breeding is to combine effective selection and breeding progress while maintaining intraspecific diversity. A hydroponic system was tested for its suitability to non-destructively select root traits on a population level in order to achieve genetic gain and maintain diversity. Forty wheat progenies were selected ...
Aufsatz
Daniel, Ute: Beziehungsgeschichten. Politik und Medien im 20. Jahrhundert, 464 S., Hamburger Edition, Hamburg 2018.
(2020-05-07)
Er brauche zum Regieren nur „Bild, BamS und die Glotze“, so ein oft kolportiertes, wenngleich nie bestätigtes Zitat vom vermeintlichen Medienkanzler Gerhard Schröder. Die Lektüre von Ute Daniels Buch über das Verhältnis von Politik und Medien hätte ihn möglicherweise eines Besseren belehren und ihm deutlich machen können, dass die Dinge dann doch etwas komplizierter liegen. Denn, so eine zentrale Botschaft des Buches, Allmachtsfantasien erscheinen in dem komplexen Beziehungsgewirr von Politik und Medien in der einen ...
Aufsatz
Fully Implicit RUNGE-KUTTA Schemes for Ideal Elastoplasticity
(2021-12-14)
The present paper derives a multifield formulation of ideal elastoplasticity to enable the consistent application of higher order accurate RUNGE-KUTTA schemes. With the help of an axisymmetric model problem the appearing time discretization errors of distinct schemes are determined and compared.