The current project aims at better understanding how narrative characteristics in stories function in the liking, moral evaluation, and enjoyment of narratives featuring morally ambiguous characters (MACs). Shafer and Raney (2012) found that viewers differently enjoyed a heroic versus MAC-centered narrative. Building on this approach, a mixed-method design was used to investigate character development in two morally ambiguous narratives. Results of both a qualitative content analysis and an experiment provide support for the claim that character development is a central mechanism to explain viewer responses to MACs in narrative content. Thus, this study provides new directions for understanding characters in media research.
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Both within the Netherlands and beyond, young people often start their formal foreign language (FL) education just as they reach adolescence. Speaking the FL in class can be intimidating, and this challenge is often exacerbated as teachers lack ready access to engaging speaking activities. In language classrooms around the world, improvisational drama techniques (IDTs) have been shown to engender positive affective reactions (e.g. enjoyment) and spoken interaction. Yet little research has been conducted on how to train FL teachers to implement IDTs. With this doctoral research project, the goal was to discover which characteristics of a professional development program (PDP) can foster integration of IDTs in the FL classroom and in turn stimulate affective factors related to willingness to communicate among secondary school pupils. The first three studies focused on developing design principles for the PDP and consequently a prototype for this training. The following two studies involved testing and refining this prototype by offering this training to FL teachers. Finally, the impact of the PDP was evaluated among trained teachers’ pupils. The collective findings revealed that the PDP design was viable in its relevance to teachers in galvanizing them to implement IDTs. Their pupils found drama activities to be engaging and fun, and they expressed greater willingness to communicate than during other types of speaking activities. This project was conducted through the Multilingualism and Education Research Group at the University of Applied Sciences Utrecht in conjunction with Utrecht University, Faculty of Humanities.
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Academic design research often fails to contribute to design practice. This dissertation explores how design research collaborations can provide knowledge that design professionals will use in practice. The research shows that design professionals are not addressed as an important audience between the many audiences of collaborative research projects. The research provides insight in the learning process by design professionals in design research collaborations and it identifies opportunities for even more learning. It shows that design professionals can learn about more than designing, but also about application domains or project organization.
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Carboxylated cellulose is an important product on the market, and one of the most well-known examples is carboxymethylcellulose (CMC). However, CMC is prepared by modification of cellulose with the extremely hazardous compound monochloracetic acid. In this project, we want to make a carboxylated cellulose that is a functional equivalent for CMC using a greener process with renewable raw materials derived from levulinic acid. Processes to achieve cellulose with a low and a high carboxylation degree will be designed.
Size measurement plays an essential role for micro-/nanoparticle characterization and property evaluation. Due to high costs, complex operation or resolution limit, conventional characterization techniques cannot satisfy the growing demand of routine size measurements in various industry sectors and research departments, e.g., pharmaceuticals, nanomaterials and food industry etc. Together with start-up SeeNano and other partners, we will develop a portable compact device to measure particle size based on particle-impact electrochemical sensing technology. The main task in this project is to extend the measurement range for particles with diameters ranging from 20 nm to 20 um and to validate this technology with realistic samples from various application areas. In this project a new electrode chip will be designed and fabricated. It will result in a workable prototype including new UMEs (ultra-micro electrode), showing that particle sizing can be achieved on a compact portable device with full measuring range. Following experimental testing with calibrated particles, a reliable calibration model will be built up for full range measurement. In a further step, samples from partners or potential customers will be tested on the device to evaluate the application feasibility. The results will be validated by high-resolution and mainstream sizing techniques such as scanning electron microscopy (SEM), dynamic light scattering (DLS) and Coulter counter.
Chemical preservation is an important process that prevents foods, personal care products, woods and household products, such as paints and coatings, from undesirable change or decomposition by microbial growth. To date, many different chemical preservatives are commercially available, but they are also associated with health threats and severe negative environmental impact. The demand for novel, safe, and green chemical preservatives is growing, and this process is further accelerated by the European Green Deal. It is expected that by the year of 2050 (or even as soon as 2035), all preservatives that do not meet the ‘safe-by-design’ and ‘biodegradability’ criteria are banned from production and use. To meet these European goals, there is a large need for the development of green, circular, and bio-degradable antimicrobial compounds that can serve as alternatives for the currently available biocidals/ preservatives. Anthocyanins, derived from fruits and flowers, meet these sustainability goals. Furthermore, preliminary research at the Hanze University of Applied Science has confirmed the antimicrobial efficacy of rose and tulip anthocyanin extracts against an array of microbial species. Therefore, these molecules have the potential to serve as novel, sustainable chemical preservatives. In the current project we develop a strategy consisting of fractionation and state-of-the-art characterization methods of individual anthocyanins and subsequent in vitro screening to identify anthocyanin-molecules with potent antimicrobial efficacy for application in paints, coatings and other products. To our knowledge this is the first attempt that combines in-depth chemical characterization of individual anthocyanins in relation to their antimicrobial efficacy. Once developed, this strategy will allow us to single out anthocyanin molecules with antimicrobial properties and give us insight in structure-activity relations of individual anthocyanins. Our approach is the first step towards the development of anthocyanin molecules as novel, circular and biodegradable non-toxic plant-based preservatives.
