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Now showing items 481-490 of 946
Working paper
Trucking in the Eastern Bloc
(2023-03-10)
This article explores the tensions during the Cold War between the need to have infrastructure to enable truck transport in the countries of the Eastern Bloc. Using “shortage economy” as the theoretical framework to analyse the Eastern bloc the article shows restrictions the shortage economy imposed on investments in infrastructure. The Western management started in the 1980s to let the enterprises’ transports to be carried out by external truck transport service providers – a policy which is known as “outsourcing”. ...
Aufsatz
Quenching of High Entropy Alloys after Annealing
(2020)
The effect of cooling rate after annealing at 900 °C on the microstructure and hardness of high entropy alloys was investigated using two typical samples with the chemical composition of Co₁₆Cr₁₄.₅Fe₂₉Mn₁₁.₅Ni₂₉ and Co₁₁.₅Cr₇Fe₂₇Mn₂₇Ni₂₇(Nb₀.₀₈C₀.₅) (at%). The microstructural characterisation and hardness measurements were carried out by optical microscopy, scanning electron microscopy, wavelength-dispersive X-ray spectroscopy, electron back scattered diffraction, X-ray diffraction technique and Vickers hardness ...
Aufsatz
Are farmer perceptions among significant determinants of adoption of agricultural diversity in Malawi? A case of Lilongwe district
(2020-12-14)
Agricultural diversity can strengthen resilience of livelihood of farmers to climate change and market uncertainties while, potentially at the same time, o ering better dietary and nutritional prospects for households. Adoption of agricultural diversity in Malawi is low. Policy-makers, researchers, non-governmental organisations (NGOs), and extension staff need to understand dynamics of adoption of agricultural diversity in order to develop appropriate policies and interventions to promote agricultural diversification. ...
Dissertation
High temperature-stable InGaAs QDs for the monolithic integration in external-cavity surface-emitting lasers
(2021)
Optically pumped vertical external-cavity surface-emitting lasers (VECSELs), also called semiconductor disk lasers (SDLs), benefit from the flexibility and versatility of the semiconductor material. With a simple cavity layout, fundamental transverse mode operation with a circular output beam and high beam quality is possible. They have excellent heat-sink properties and only require inexpensive multimode diode lasers for pumping. The complete VECSEL structure is only a few micrometers thick which leads to a strong ...
Aufsatz
On the reliability of residual stress measurements in unidirectional carbon fibre reinforced epoxy composites
(2021-03-03)
The present work introduces a novel methodology to analyse non-uniform residual stresses in composite materials. For robust determination of stresses in complex structures made of different layers, it is first necessary to prove that residual stress analysis in a single layer structure can reliably be accomplished. In present work a unidirectional carbon fibre reinforced epoxy is investigated. For residual stress determination, the integral incremental hole drilling method is used. It is revealed that the standard ...
Working paper
Taylor and Taylorism
(2023-04-20)
Beyond the perspectives of labour science and industrial sociology, in which extensive deepening of the division of labour can be crystallized as an element of consensus under Taylorism, the concept of Taylorism found its way into general intellectual history. In 1954, the German-American management expert Drucker ranked scientific management among the most important contributions of the USA to Western culture. The dissemination of the concept of Taylorism in Western culture outlined here points to a high rank of ...
Buch
Abschlussergebnisbericht - KMU-Wissenstransferlabor „Digitale Fabrik“
(2023-04)
Der digitale Wandel stellt aufgrund der hohen Gestaltungskomplexität insbesondere kleine und mittlere Unternehmen (KMU) immer noch vor große Herausforderungen. Reifegradmodelle und Roadmaps bieten Möglichkeiten, diese Komplexität beherrschbar zu machen. Vor diesem Hintergrund hat das Fachgebiet Produktionsorganisation und Fabrikplanung an der Universität Kassel im Rahmen des Forschungsprojektes Wissenstransferlabor „Digitale Fabrik“ (Wislab) ein KMU-spezifisches Reifegradmodell, einen zugehörigen Erhebungsleitfaden ...
Aufsatz
Continuity and changes in food consumption pattern among Tibetan refugee community in India
(2021-09-29)
Background: Food consumption pattern of refugee communities was carried by many scholars but little is known about the food continuity of refugees in host country and its implications on health.
Aim: The present study highlights the issue of food continuity among Tibetan refugees in Bylakuppe settlement, India.
Methods: 200 household data were collected in order to understand food consumption pattern by employing household structured questionnaire. Simultaneously, 23 individual data were collected consisting first ...
Masterarbeit
Burkina Faso Under the Presidency of Thomas Sankara – A Post-Developmental State ?
(2023-05)
Thomas Sankara, one of the most celebrated African idols, was president of Burkina Faso from 1983 until his assassination in 1987. The politics he realized with his government were vanguard in more than one regard: The country’s feminist politics queried patriarchy by promoting equal rights and duties for women and men in several different domains; along with the country’s citizens, migrants could participate in policy-making and thereby shape politics; redistribution was made a political goal aspiring to overcome ...
Aufsatz
Ti6Al4V lattice structures manufactured by electron beam powder bed fusion - Microstructural and mechanical characterization based on advanced in situ techniques
(2022-12-17)
Powder bed fusion (PBF) processes enable the manufacturing of complex components in a time- and cost-efficient manner. Especially lattice structures are currently focused since they show varying mechanical properties, including different deformation and damage behaviors, which can be used to locally tailor the mechanical behavior. However, the present process-structure-property relationships are highly complex and have to be understood in detail in order to enable an implementation of PBF manufactured lattice structures ...