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Semi-solid metal alloys, as used in industrial thixoforming, have a special microstructure of globular grains suspended in a liquid metal matrix. The complex rheological properties are strongly influenced by the local solid fraction, particle shape, particle size and state of agglomeration. It was analysed how the microstructure develops in dependence of the shear rate and cooling rate during the solidification and it was observed that the average particle size increased with increasing shear rate and decreasing cooling rate. In order to account for those phenomena, the rate of crystal growth and the relationship between average particle diameter and viscosity was modelled by applying the Sherwood two-film model for the mass transport. The dependence of the viscosity from the particle size were modelled with a modified Krieger–Dougherty model. Based on the rheological and microstructural observations an evaluation method was elaborated that allows for the construction of objective master curves that are independent of the particle growth during the experimentation. The isothermal experiments for the characterisation of the rheological behaviour consisted of step-change of shear-rate and yield-stress experiments. From the experimental data the steady-state flow curves could be determined as well as the time-dependent relaxation of the shear stress after a change of shear rate. The steady-state rheological behaviour was found to be shear thinning. Nevertheless, immediately after a shear-rate change an overshoot was observed that resulted from a short-time shear-thickening behaviour. The yield stress was found to strongly depend on the microstructure and the degree of agglomeration of the solid phase. With increasing rest time the yield stress was increasing strongly, because of the agglomeration of the solid particles. Based on the step-change of shear-rate experiments a single-phase flow has been developed that consists of a modified Herschel–Bulkley approach and accounts for the thixotropic as well as for the yield-stress behaviour of the alloys.
Die Kostenreduzierung solarthermischer Systeme bleibt eine der großen Herausforderungen, um die Solarthermie wirtschaftlich attraktiv zu machen. In der vorliegenden Arbeit wurde eine vollständige Simulationsumgebung geschaffen, mit der bereits in der Entwicklungsphase automatisierte Optimierungen in Bezug auf Ertrag und Wirtschaftlichkeit von Kollektoren und Systemen zur Brauchwassererwärmung und Heizungsunterstützung möglich sind. Die Anwendung dieses Simulationstools ist sowohl für den Komponentenhersteller als auch für den Systemplaner relevant.
After hesitating until the mid-2010s, German industry has now embraced the energy transition and moved to a driver. The pioneers of change are the major energy companies, followed large parts of industry which have initiated radical changes. Even the energy-intensive industries steel and chemistry are phasing out fossil fuels.
Das neue Lehrbuch basiert auf dem in der 6. Auflage erschienenen, von Dieter Schneeloch verfassten Werk „Betriebswirtschaftliche Steuerlehre, Band 1: Besteuerung“. Aufbauend auf der bewährten Grundstruktur fokussiert und vertieft die Neuauflage die Inhalte:
- Grundlagen, Grundbegriffe, Durchführung der Besteuerung
- Einkommensteuer
- Körperschaftsteuer
- Gewerbesteuer
- Zuschlagsteuern, Zulagen, Prämien
Der Grundlagenteil gibt einen prägnanten Überblick über das deutsche Steuersystem und vermittelt Kenntnisse zu den Steuerrechtsquellen, zur Methodik der Steuerrechtsauslegung sowie zur Durchführung der Besteuerung. Der Hauptteil beschreibt die Rechtsvorschriften zur Einkommen- und Körperschaftsteuer, inkl. ihrer Zuschlagsteuern, sowie die Gewerbesteuer. Viele Praxisbeispiele, Übungsaufgaben und anschauliche Abbildungen erleichtern das Verständnis.
Zielgruppe:
Studierende der Betriebswirtschaftslehre, der Steuerrechtswissenschaft und der Finanzwissenschaft an Universitäten und Hochschulen, Angehörige steuerberatender Berufe, Unternehmensberater und Juristen sowie Mitarbeiter in der Finanzverwaltung und in Steuerfachabteilungen von Unternehmen.
Dieses neue Lehrbuch basiert auf dem in dritter Auflage erschienenen, von Dieter Schneeloch verfassten Werk „Betriebswirtschaftliche Steuerlehre, Band 2: Betriebliche Steuerpolitik“. Es wurde in der vierten Auflage in die drei eigenständigen Bände 4 bis 6 des nunmehr insgesamt sechsbändigen Werkes zur Betriebswirtschaftlichen Steuerlehre aufgeteilt und grundlegend überarbeitet.
Band 4 ist in zwei Teile untergliedert. Teil I enthält methodische Grundlagen zur betrieblichen Steuerplanung. Diese ist Teil der allgemeinen Unternehmensplanung. Sie kann als die zielgerichtete, d.h. planmäßige Ausnutzung steuerlicher Gestaltungsmöglichkeiten durch die einzelnen Wirtschaftssubjekte verstanden werden. In Teil II werden Probleme einer autonomen Steuerplanung erörtert. Schwerpunktmäßig handelt es sich um Probleme der Steuerbilanzpolitik. Viele Praxisbeispiele, Übungsaufgaben und anschauliche Abbildungen erleichtern das Verständnis.
Zielgruppe Studierende der Betriebswirtschaftslehre, der Steuerrechtswissenschaft und der Finanzwissenschaft an Universitäten und Hochschulen, Angehörige steuerberatender Berufe, Unternehmensberater und Juristen sowie Mitarbeiter in der Finanzverwaltung und in Steuerfachabteilungen von Unternehmen.
Purpose
– The purpose of this paper is to present the current empirical research examining communication, compensation and logistics as elements of product crises management in retailing.
Design/methodology/approach
– The advantages and disadvantages of these three elements of crises response strategies are juxtaposed drawing on relevant empirical research. For each element of crises response the major findings of research are summarized and shown how it relates to crisis management. Needs for further research that would be necessary to solidify recommendations to retail managers are derived.
Findings
– The investigation finds that both communicative and compensatory response elements as well as the retailer's logistics can positively influence evaluations of customers directly and indirectly affected by product problems thus enhancing brand equity. This in turn will serve to increase consumers' trust in the retailer that could win him new customers and generally benefit his reputation.
Research limitations/implications
– Most of the discussed research rests on the assumption of a given (extraneous) crisis response strategy of the manufacturer. Potential problems concerning the co‐ordination or implementation of manufacturer and retailer strategies remain open to question. Additionally, further research should examine which strategies are appropriate to which crisis situation.
Practical implications
– Materially, over‐compensating customers often has a detrimental effect on solving the crisis. The impact of different compensation types on crisis resolution mostly depends on their respective signalling capabilities, the product problem constituting the crisis and consumer attributions. The use and the effects of a communicative crisis response largely depend on moderating factors such as the retailer's reputation or the existence of strong retail brands and consumer expectations. Elements of logistics seem to support the effects of communication and compensation on crisis resolution but are hardly capable of solving a product‐harm crisis.
Originality/value
– The role of retailers in product‐harm crisis management has been widely neglected in research although such crises are predominant. This paper outlines the current empirical work on how different crises response elements may contribute to solving a product‐harm crisis for retailers. It derives relevant avenues for further research as well as useful insights to practitioners considering to using such response elements in their own crisis management strategy.
This research paper analyzes the role of pre-crisis
reputation for quality on consumers ’ perceptions of
product-related dangers and company responsibility
in product-harm crises with varying risk information.
We consider (non-) substantiated public
complaints incorporating low and moderate product-
related risks, as well as product-recall situations
involving serious risks to the health and safety of
consumers. Hypotheses are derived from theories
and concepts of consumer behavioural psychology.
These are then tested empirically by using an
online experiment. The effects of reputation are
analyzed across different crises contexts to derive
some general insights useful for crisis management.
In order to shed light on situational differences of
the reputation mechanism its effect on individual
crisis level will also be considered. In general, the
analysis fi nds that reputation for quality is capable
of positively infl uencing the perceptions of company
responsibility and thereby shielding the
manufacturer from receiving blame. However, an
established reputation for high product quality
prior to the crisis fails to positively impacting
consumers ’ perceptions of problem severity. The
crisis-specifi c effects of reputation turn out to be
ambivalent. On the basis of these fi ndings, recommendations
to crisis managers and relevant avenues
for future research are derived.
The candidate list of substances subject to authorisation is an instrument provided by the EU chemicals regulation (REACH) to publicly announce and prioritize chemical substances of very high concern (SVHC) as a first step of imposing an obligation of authorisation on them, i.e. including them into the authorisation list (Annex XIV of REACH). As a consequence of inclusion into the “candidate list”, a variety of obligations concerned with intensifying risk communication apply. Article producers, importers and distributors of articles have to communicate information about SVHCs contained in articles and necessary risk management measures to the recipients of the articles and provide this information to consumers on request (Art. 33 REACH). This research paper analyzes the reputational mechanism of the candidate list showing a potential to stigmatize not only the substances as such but also various actors of the supply chain associated with these substances and their brands. Drawing on behavioral psychology theories, hypotheses on the reputational impacts of the candidate list on substance manufacturers, downstream users (including formulators and manufacturers of articles) and distributors are derived. These are discussed on the basis of current empirical data surveyed by the European Commission.
Incidence of Tube Feeding in 7174 Newly Admitted Nursing Home Residents With and Without Dementias
(2015)
Background:
Tube feeding is a common form of long-term nutritional support, especially for nursing home residents, of whom many have dementia.
Objective:
Estimating the incidence of feeding tube placement in nursing home residents with and without dementia.
Methods:
Using claims data, we studied a cohort of newly admitted nursing home residents aged 65 years and older between 2004 and 2009. Analyses were stratified by dementia. We estimated incidence rates and performed multivariate Cox regression analyses.
Results:
The study cohort included 7174 nursing home residents. Over a mean follow-up of 1.3 years, 273 people received a feeding tube. The incidence per 1000 person-years was 28.4, with higher estimates for patients with dementia. When adjusting for age, sex, and level of care as a time-dependent covariate, influence of dementia decreased to a nonsignificant hazard ratio.
Conclusion:
It seems that not dementia itself but the overall clinical condition might be a predictor of tube feeding placement.
Innovationen sind etwas Neues. Sie sind der Motor vieler Unternehmer und unserer Volkswirtschaft. Innovationen sind aber auch risikobehaftet. Oft ist die Entwicklung von neuen Produkten und Prozessen aufwändig und das Flop-Risiko am Markt groß. Dennoch - ohne Innovationen können sich gerade mittelständische Unternehmen nicht behaupten.
The interdisciplinary research project TiP.De - Theatre in Dementia Health Care aims at identifying the effects of theatre pedagogy on quality of life of people with dementia in two German nursing homes.
The mixed-methods intervention study measures cognitive impairment, quality of life in daily living and agitation in a pre-post-comparison, as well as emotional reactions during the theatre pedagogical interventions of the participants.
The intervention is expected to have a positive impact on cognitive impairment, quality of life, agitation and relationship between the participants and the assisting nursing home staff. Further data analysis will show correlations between specific items.
The results and the theatre pedagogy concept for people with dementia will be published, so that theatre pedagogues are able to implement the concept in other nursing homes. The nursing situation, communication and work experience of nurses, as well as quality of life of people with dementia are going to be positively affected.
A suspension of PMMA spheres in a density matched saccharose solution is investigated with a classical Searle rheometer and a NMR (Nuclear Magnetic Resonance) spectrometer. Here the NMR is used to measure the radial distribution of the PMMA spheres in the rotating cell, in addition to the local velocity profile of the suspension. The influence of particle concentration on the wall depletion is studied. Further analysis are carried out with computational fluid dynamics software. The velocity field as well as the solid distribution in the couette flow is simulated with a two-phase model including the Darcy law and compared to the experimental data.
Band 5 beschäftigt sich mit der Einbeziehung von Steuern in Investitions- und Finanzierungsentscheidungen. Derartige Entscheidungen sind sowohl bei Gründung eines Unternehmens als auch im Rahmen des laufenden Geschäftsbetriebs zu treffen.
Dass neben Investition und Finanzierung nicht auch die anderen betrieblichen Funktionen Beschaffung, Produktion und Absatz behandelt werden, hat zwei Gründe:
Erstens ist die Bedeutung der Besteuerung für Investitions- und Finanzierungsentscheidungen erheblich größer ist als für Entscheidungen im Beschaffungs-, Produktions- und Absatzbereich. Zweitens sind Probleme der Einbeziehung von Steuern in unternehmerische Entscheidungen gleichstrukturiert, und zwar unabhängig davon, ob es sich um Investitions- und Finanzierungsentscheidungen oder aber um andere Entscheidungen handelt.
Viele Praxisbeispiele, Übungsaufgaben und anschauliche Abbildungen ergänzen die verbalen Ausführungen und erleichtern deren Verständnis.
Zielgruppe
Studierende der Betriebswirtschaftslehre, der Steuerrechtswissenschaft und der Finanzwissenschaft an Universitäten und Hochschulen, Angehörige steuerberatender Berufe, Unternehmensberater und Juristen.