Dutch Focus Groups results. TR 3.54 Interactions with citizens and consumers at local scale

As part of the Endure project, funded by the EU Sixth Framework Programme, two focus group sessions were carried out in January 2010 in the Netherlands. Aim of these focus group sessions was to understand the believes, associations and attitudes people have concerning the use of pesticides and integrated pest management (IPM) in regard to apples and pears. In total 15 people participated in the focus group session and participants were heterogeneous in gender, age and background. They all bought apples and most of them visited farms are farmers markets

Change Impact Analysis based on Formalization of Trace Relations for Requirements

Evolving customer needs is one of the driving factors in software development. There is a need to analyze the impact of requirement changes in order to determine possible conflicts and design alternatives influenced by these changes. The analysis of the impact of requirement changes on related requirements can be based on requirements traceability. In this paper, we propose a requirements metamodel with well defined types of requirements relations. This metamodel represents the common concepts extracted from some prevalent requirements engineering approaches. The requirements relations in the metamodel are used to trace related requirements for change impact analysis. We formalize the relations. Based on this formalization, we define change impact rules for requirements. As a case study, we apply these rules to changes in the requirements specification for Course Management System

Traceability-based change management in operational mappings

This paper describes an approach for the analysis of changes in model transformations in the Model Driven Architecture (MDA). Models should be amenable to changes in user requirements and technological platforms. Impact analysis of changes can be based on traceability of model elements. We propose a model for generating trace links between model elements and study scenarios for changes in source models and how to identify the impacted elements in the target model

Univalent completion

We show by elementary means that every Kan fibration in simplicial sets can be embedded in a univalent Kan fibration

Jongeren & Bio, een mooie toekomst

Report of a quantitative study of young people aimed at gaining a greater understanding of the extent to which young people are involved with food and are open to organic food or food that has been produced responsibly and honestly or is good for their own bodies. We examined how communication about such products can be attuned to this target grou

Perceptie van groente en fruit en de meerwaarde van inhoudsstoffen: een studie onder non-, light- en heavy-users van biologisch

There is a general assumption that products containing large amounts of nutrient substances can offer consumers added value. It is also assumed that most consumers are aware of the health-related aspects of fruit and vegetables, and that consumers actually take account of this in their purchasing behaviour. However, there is very little insight into the knowledge and attitude of consumers with regard to the added value of ingredients in fresh fruit and vegetable products. The present report endeavours to answer the following question: In what way can one capitalise on the natural and logical alliance of organic and nutrients in the marketing of organic products

Gezondheid als marketinginstrument

Is biologisch voedsel beter dan gangbaar? Hoe hard zijn de bewijzen daarvoor? En hoe sterk moet het bewijs zijn voordat je het als claim op een product mag zetten? In dit Biokennis bericht een overzicht van de wetenschappelijke conclusies en de mogelijkheden om biologisch te promoten als beter, neergezet tijdens een werkbijeenkomst over gezondheid en voeding op 27 maart 2008

Detection, Quantification and Monitoring of Prosopis in the Northern Cape Province of South Africa using Remote Sensing and GIS

Invasive Prosopis species pose a significant threat to biodiversity and  ecosystem services in the Northern Cape Province of South Africa. The objective of the study was to use Remote Sensing and Geographical  Information System (GIS) techniques to: (i) reveal areas susceptible to future invasion, (ii) describe the current extent and densities and, (iii)  reveal the spatial dynamics of Prosopis over the past 30 years in the  Northern Cape. Image classification products were generated using spectral analysis of seasonal profiles, various resolution image inputs, spectral indices and ancillary data. Classification approaches varied by scene and spatial resolution as well as application of the data. Coarse resolution  imagery and field data were used to create a probability map estimating the area vulnerable to Prosopis invasion using relationships between actual Prosopis occurrence, spectral response, soils and terrain unit. Multi-temporal Landsat images and a 500m x 500m point grid enabled vector analysis and statistical data to quantify the change in distribution and density as well as the spatial dynamics of Prosopis since 1974.  Fragmentation and change of natural vegetation was quantified using a combined cover density class, calculating patch density per unit (ha) for each biome. The extent of Prosopis cover in the Northern Cape Province reached 1.473 million ha or 4% of the total land area during 2007. The ability of the above mentioned remote sensing and GIS techniques to map the extent and densities of Prosopis in the study area demonstrated a high degree of accuracy (72%)