The emotional experience of a visit to a concentration camp memorial is high in intensity and wide in diversity. Clustering of this emotional experience has led to a better understanding of the valence of emotions. It is not known how these emotion clusters affect the meaning derived from the experience and how this affects visit intention. This study addressed this gap in research and explored the potential relations between emotion clusters and meaning in the context of an expected visit to a concentration camp memorial. This study finds that the emotion cluster Sympathy is the only cluster to have a significant and large positive direct effect on Meaning and a significant, but small, positive indirect effect on Visit Intention. The Misery cluster is the only cluster that has a significant but small negative direct effect on Visit Intention. The Positivity cluster has no effects on Meaning and Visit Intention. In the discussion, we address the role of empathy, and theoretical implications are framed in Terror Management Theory. Managerial implications include a discussion on the use of promotion to trigger empathy.
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The present study focuses on the level of stress a teacher perceives when dealing with the most behaviorally challenging student in his or her classroom. To measure stress in Dutch elementary classrooms, a sample was drawn of 582 teachers. Two questions concerning this relation between student and teacher will be addressed. First of all, we focus on background variables of teachers and students as sources of variation in explaining the magnitude of challenging student behavior and the associated level of stress teachers experience. The second topic of this paper is to accommodate the potentially stressful relationship between student and teacher in a wider network of surrounding variables, which are, Self-efficacy, Negative affect, Autonomy in taking decisions, and Support amongst colleagues. To evaluate the presence of challenging behavior, the behavior of the student is related to more general variables like student responsibility, class size and ratio of boys to girls. We close our paper by assessing the validity of the studied relationship between teacher and student with respect to possible burnout.
The modern economy is largely data-driven and relies on the processing and sharing of data across organizations as a key contributor to its success. At the same time, the value, amount, and sensitivity of processed data is steadily increasing, making it a major target of cyber-attacks. A large fraction of the many reported data breaches happened in the healthcare sector, mostly affecting privacy-sensitive data such as medical records and other patient data. This puts data security technologies as a priority item on the agenda of many healthcare organizations, such as of the Dutch health insurance company Centraal Ziekenfonds (CZ). In particular when it comes to sharing data securely, practical data protection technologies are lacking as they mostly focus on securing the link between two organizations while being completely oblivious of what is happening with the data after sharing. For CZ, searchable encryption (SE) technologies that allow to share data in encrypted form, while enabling the private search on this encrypted data without the need to decrypt, are of particular interest. Unfortunately, existing efficient SE schemes completely leak the access pattern (= pattern of encrypted search results, e.g. identifiers of retrieved items) and the search pattern (= pattern of search queries, e.g. frequency of same queries), making them susceptible to leakage-abuse attacks that exploit this leakage to recover what has been queried for and/or (parts of) the shared data itself. The SHARE project will investigate ways to reduce the leakage in searchable encryption in order to mitigate the impact of leakage-abuse attacks while keeping the performance-level high enough for practical use. Concretely, we propose the construction of SE schemes that allow the leakage to be modeled as a statistic released on the queries and shared dataset in terms of ε-differential privacy, a well-established notion that informally says that, after observing the statistic, you learn approximately (determined by the ε-parameter) the same amount of information about an individual data item or query as if the item was not present in the dataset or the query has not been performed. Naturally, such an approach will produce false positives and negatives in the querying process, affecting the scheme’s performance. By calibrating the ε-parameter, we can achieve various leakage-performance trade-offs tailored to the needs of specific applications. SHARE will explore the idea of differentially-private leakage on different parts of SE with different search capabilities, starting with exact-keyword-match SE schemes with differentially-private leakage on the access pattern only, up to schemes with differentially-private leakage on the access and search pattern as well as on the shared dataset itself, allowing for more expressive query types like fuzzy match, range, or substring queries. SHARE comes with an attack lab in which we investigate existing and new types of leakage-abuse attacks to assess the mitigation-potential of our proposed combination of differential privacy with cryptographic guarantees in searchable encryption. To stimulate commercial exploitation of SHARE-results, our consortium partners CZ and TNO will take the lead on applying and evaluating our envisioned technologies in various healthcare use-cases.
Sustainable business decision-making as villagers of the world In making our society resilient and future-proof we are faced with many complex and multi-faceted challenges and opportunities. Many promising sustainable initiatives require the proactive contribution of businesses to be successful, but fail to reach the required decision making level of individuals and companies, and thus fail to reach their positive impact. The result is a multiple waste: in creativity and innovation, in investment of the organisations involved, in opportunities to improve society and in our overall belief that we can make the necessary changes. In this project we focus on the reasons why individuals and thus companies act and decide negatively on new and existing sustainable innovations and projects, starting from the perspective that a professional’s and a company’s inherent sustainable decision making is at the heart of truly improving society. The aim is to create multiple value (economic, social and ecological) of SMEs by increasing the success rate of sustainability initiatives out of an implicit business professional’s choice to do so. Based on the theory of psychological distance, we combine exploratory case studies of successful pilots with exploratory research via interviews with business decision makers, to analyse what drives professional’s and companies’ decision making, and how this affects sustainable initiatives. The aim is to propose ways to increase the quality of sustainable decision making, and thus the likelihood of success. The learnings are translated to practical guidelines a SME should consider for executing their business in the most sustainable way, and form a base for further applied research on sustainable business behaviour towards a circular economy.
In de toekomst zullen wateroverlast en droogte steeds vaker voorkomen. Hoewel water van grote betekenis is voor ons dagelijks leven - en Nederland een rijke traditie heeft van waterbeheer - maken sociale, culturele en historische waarden slechts sporadisch deel uit van watergerelateerd beleid. Omdat er bij wateropgaven veel verschillende partijen aan tafel zitten, is het belangrijk te snappen welke waarden meespelen bij besluitvormingsprocessen. Een serious game kan helpen bij het formuleren van die waarden om bij te dragen aan een beter ‘waterbewustzijn’ van zowel beleidsmakers als bewoners, en bewoners beter te betrekken bij hun eigen leefomgeving. Six Architecten, actief in bouw- en renovatieprojecten waarin water en erfgoed een rol spelen, lopen aan tegen een beleidsomgeving van tegengestelde belangen. De gameontwikkelaar IJsfontein in Amsterdam ontwikkelt serious games en heeft veel ervaring met het visualiseren van historisch materiaal voor musea en archieven, maar zoekt naar de kennis om deze vaardigheden toepasbaar te maken binnen de hedendaagse klimaatopgave. Met deze twee praktijkpartners werken onderzoekers van de TU Delft, op het gebied van watererfgoed, ontwerpen voor waarden (Delft Design for Values) en games (TPM), samen aan de WaterWaarden-game. Voor dit project gaan we in gesprek met beleidsmakers en bewoners om te achterhalen welke waarden er meespelen bij een selectie van objecten (zoals kades, dijken, gemalen) binnen de casus Amsterdam. Waternet, het waterbedrijf van de gemeente Amsterdam en het waterschap Amstel, Gooi en Vecht, zal bijdragen bij het contacten leggen met betrokken en het toetsen aan de beleidswerkelijkheid. Door de waarden en uitdagingen in specifieke opgaven in Amsterdam te analyseren en in de game te verwerken, werken we toe naar een prototype en een aanvraag om deze serious game te ontwikkelen tot een gameplatform dat in de toekomst ook bij wateropgaven in andere gebieden gebruikt kan worden.
