Search results for "value"

Identifiability problem for recovering the mortality rate in an age-structured population dynamics model

2014

In this article is studied the identifiability of the age-dependent mortality rate of the Von Foerster–Mc Kendrick model, from the observation of a given age group of the population. In the case where there is no renewal for the population, translated by an additional homogeneous boundary condition to the Von Foerster equation, we give a necessary and sufficient condition on the initial density that ensures the mortality rate identifiability. In the inhomogeneous case, modelled by a non-local boundary condition, we make explicit a sufficient condition for the identifiability property, and give a condition for which the identifiability problem is ill-posed. We illustrate this latter case wit…

Entrepreneurial orientation at the level of dyad relationships in supply chains and networks

2009

Legumes in 21st century Europe: present and future importance in agri-food systems? New challenges for reseach.

2013

Intensification of agriculture since 1950 has globally led to the decline of grain legume crops, which currently represent less than 3 % of arable crops in France and Europe. Nevertheless, legumes have several major assets (i) as plant proteins for animal feed and human food and (ii) as plants fixing atmospheric N2 and thereby saving nitrogen inputs in cropping systems, and (iii) as diversification crops. The analysis of forage and grain legume producing systems in France showed that the dominant system results in a lock-in of the different factors limiting legume insertion into the current systems. But legumes could have a major role to play in the agroecological transition towards more su…

Aksjologiczny wymiar rodzicielstwa

2016

Współczesny świat stwarza różne sytuacje zagrożenia dla procesów prawidłowego wychowania dzieci. Problem ten w szczególny sposób dotyka wielu polskich rodzin, które nie znalazły należnego im miejsca w wolnorynkowej rzeczywistości, jaka ma w naszym kraju miejsce od 1990 r. Mieszanie się nacji, kultur, religii sprzyja powstawaniu nowych, często dotychczas nieznanych problemów, zagrażających prawidłowemu funkcjonowaniu dziecka w rodzinie i społeczeństwie. Dlatego rola rodziców w kształtowaniu właściwych postaw u dzieci nabiera dziś szczególnego znaczenia. Uwzględniając jednak tempo przemian, warto zwrócić uwagę na konieczność przekazywania dzieciom pewnych uniwersalnych zasad z jednoczesnym za…

CHALLENGES TO MADE VALUES-BASED COMPETENCE MODEL FOR AMBULANCE PERSONNEL

2019

The purpose of this paper is to clarify and analyse the understanding of the values for Ambulance personnel, to compare and integrate it with the system of competencies used in the performance assessment and evaluation of professional competence. The results of State Emergency Medical Service ambulance personnel’s survey in the 2018 are analysed in the research. The results obtained Ambulance personnel’s different understanding of the importance of organization's values and its impact in management, staff attitude and work performance. The results of the survey have showed that Ambulance personnel has contradictive understanding of system of values. Their personal values are respect, compas…

On the Influence of Grammars on Crossover in Grammatical Evolution

2021

Standard grammatical evolution (GE) uses a one-point crossover (“ripple crossover”) that exchanges codons between two genotypes. The two resulting genotypes are then mapped to their respective phenotypes using a Backus-Naur form grammar. This article studies how different types of grammars affect the resulting individuals of a ripple crossover. We distinguish different grammars based on the expected number of non-terminals chosen when mapping genotype codons to phenotypes, \(B_{avg}\). The grammars only differ in \(B_{avg}\) but can express the same phenotypes. We perform crossover operations on the genotypes and find that grammars with \(B_{avg} > 1\) lead to high numbers of either very sm…

Impact of information and in-home sensory exposure on liking and willingness to pay: The beginning of Fairtrade labeled coffee in France.

2015

This study was conducted to assess how the Fairtrade label interacts with the perception of intrinsic product characteristics on liking and purchase decisions and to estimate the evolution of this interaction after exposure to the coffees and/or exposure to ethical information. In a first session, 119 consumers gave liking scores for 2 regular and 2 Fairtrade coffees under a blind tasting condition. Then, they were asked to indicate the maximum price they would pay for each product in 2 auctions taking place under different information conditions. In the first auction, participants saw the packaging but did not taste the coffee; in the second auction, they could both taste the coffee and se…

Conceptualizing and Measuring the Perceived Value of an Arts Venue as Applied to Live Performance

2008

International audience; This paper mobilizes the concept of value to investigate the influence of physical surroundings on artistic experiences. First the literature on value is reviewed to ascertain just how useful the concept is for understanding the physical environment. The use of the concept supplements other research perspectives on the issue of physical surroundings (sensorial marketing, appropriation). There follows a presentation of the various stages in constructing a scale of perceived value applied to live performances. The paper concludes with a discussion of results (contributions, management implications, research limits, and avenues for further inquiry).

The strategic role of external sustainability assessment in the food value chain

2014

Purpose: This research seeks to shed more light on how external sustainability assessment in the food value chain could achieve a more significant strategic impact, as most organizations fail to implement sustainability measures beyond marketing efforts. A model is proposed that aims to clarify the understanding of the process, including the influence of the actors and the way they are affected. Design/methodology/approach: The topic is initially approached rather broadly from the perspective of performance measurement and management due to a lack of relevant literature, creating the link to sustainability and its assessment in a second step. Nine essential themes are developed from the the…

Managing the complexity of green innovation

2022

PurposeGreen innovation can promote both environmental sustainability and economic growth. However, its development and implementation can be complex due to the need to align innovation activities within and across companies. In this study, the authors examined how this complexity can be managed by analyzing how individual companies combine different innovation activities to develop green innovation, and how companies along the value chain align to implement these innovations.Design/methodology/approachThe dataset comprises both interviews and a survey of senior executives from the Swedish wood construction industry. These data were first analyzed by using fuzzy set qualitative comparative …