Search results for "Lever"

Evaluation of toughness by finite fracture mechanics from crack onset strain of brittle coatings on polymers

2008

Crack onset strain measurements of a confined layer in tension provide the means for layer toughness estimation. The procedure can be simplified if steady-state conditions prevail starting from the commencement of crack propagation, an assumption frequently employed in energy release rate evaluation. It is demonstrated, by numerical analysis of experimental data, that an estimate of the defect size in the film is needed in order to reliably evaluate its fracture toughness from the crack onset strain. Only if microcracks of sufficient size are present in the brittle layer, the steady-state energy release rate at the crack onset strain can be identified with layer toughness. Otherwise, the to…

Donation Crowdfunding : Principles and Donor Behaviour

2020

AbstractDonation crowdfunding is a form of internet-enabled fundraising where backers provide funding based on philanthropic motivations without expectation of monetary or material rewards. Despite accounting for only a marginal share of global crowdfunding volumes, donation crowdfunding is a unique model for supporting a wide range of prosocial and charitable causes, while allowing fundraisers to leverage benefits afforded by ICT solutions for more effective and efficient fundraising. The chapter provides an overview of the limited research on donation crowdfunding while highlighting donor motivations and behaviour, as well as drivers of success in donation campaigns. We find that current …

Classification of Target Markets and Features of Segmentation in Marketing Places

2008

This paper examines target markets and the strategy of marketing places as an economic instrument directed to the development of countries, regions, cities and towns. The authors give a classification of potential target markets of a territory and their characteristics on an example of Latvia.Markets’ segmentation for realizing the strategy of marketing places is of great value as it allows concentrating activity on the most perspective directions of territory development and on methods of particular group attraction. It gives an opportunity to work with separate categories of consumers, to make marketing policy more direct and more expressive, to promote competitiveness of a territory and …

Bouleversements d’un parcours de vie. Le cas des aidants familiaux de personnes âgées

2019

International audience

Vatermord im expressionistischen Drama

2010

Changes in surface stress, morphology and chemical composition of silica and silicon nitride surfaces during the etching by gaseous HF acid

2007

International audience; HF acid attack of SiO2 and Si3N4 substrates is analyzed to improve the sensitivity of a sensor based on inicrocantilever. Ex situ analysis of the etching using XPS, SIMS and AFM show significant changes in the anisotropy and the rate of the etching of the oxides on SiO2 and Si3N4 surface. Those differences influence the kinetic evolution of the plastic bending deflection of the cantilever coated with SiO2 and Si3N4 layer, respectively. The linear dependence between the HF concentration and the Si3N4 cantilever bending corresponds to a deep attack of the layer whereas the nonlinear behavior observed for SiO2 layer can be explained by a combination of deep and lateral …

Positionnement stratégique des entreprises culturelles : proposition d'enrichissement autour du concept de valeur

2005

National audience; Cet article pose la question du positionnement stratégique des institutions culturelles. Si cette interrogation n'est pas nouvelle, elle mérite d'être à nouveau posée au regard des modifications que subit le secteur culturel à la fois du côté de l'offre et du côté de la demande. Dans cette optique nous envisagerons de nouvelles sources de différenciation possibles pour les institutions culturelles en mobilisant le concept de valeur. Une relecture des travaux autour de cette notion nous conduira à en proposer des extensions qui constitueront autant de voies de positionnement. Nous justifierons chacune de ces extensions et nous verrons quelles implications managériales cela…

Concrete arch bridges erected by suspended cantilever method vs cable–stayed bridges

2011

Factors influencing the adoption postponement of mobile payment services in the hospitality sector during a pandemic

2021

Abstract In the post-COVID-19 era, the hospitality sector may witness a wider use of mobile payment services (MPS) not requiring physical contact. But consumers may postpone adoption of MPS in wait for a more attractive iteration. Given consumers' reluctance to adapt to such services, an investigation into MPS adoption postponement and the factors contributing to it is thus needed. Our research model extends the innovation resistance theory by including two behavioral measures (privacy concerns and visibility) and examining how security concerns moderate the associations between them. We analyzed data from 308 respondents who had previously purchased accommodation and transportation service…

Knowledge behaviors when the commons are at stake: Insights from the Covid-19 crisis

2020

How do people’s beliefs on the likely system-level consequences of circulating a certain piece of knowledge influence those people’s knowledge behaviors? To address this question, we leverage the most recent developments of the theory of the commons as learning systems. According to this theory, people are strongly responsive to perceived threats to the commons they (may) benefit from, and strive to learn and respond accordingly. Through this theoretical lens, we analyze thick qualitative data (January-April 2020) from the Covid-19 crisis, which resulted in unprecedented visibility of commons-related knowledge behaviors. The contribution of this inductive study is fourfold. First, we identi…