Molag M.,Saxion University |
Molag M.,TNO |
Energy Procedia | Year: 2011
In the near future large quantities of CO2 will be transported over a large distance from Carbon dioxide Capture plants to onshore and off-shore underground Storage (CCS) sites. The risk assessments for the existing CO2 pipelines show distances to harmful threshold concentrations from 1 to 7.2 km. Such large differences in safety distances are not acceptable. For the design, construction and operation of new high pressure CO2 pipelines through populated areas it will be necessary to have a validated risk assessment model. This paper describes the applied models for the outflow and dispersion and the causes of the uncertainties in the outflow and dispersion of CO2 after an accidental release from a high pressure pipeline. © 2011 Published by Elsevier Ltd.
Taylor B.,Oxford Brookes University |
De Vocht H.,Saxion University
Qualitative Health Research | Year: 2011
Heideggerian researchers recognize that people and their worlds are coconstructed; people make sense of their world from within it, not detached from it. The presence of one's partner in a joint interview will therefore influence the experience of participants, and will also influence the descriptions they provide. In this article, we present a reflexive discussion of two studies in which we used Heideggerian hermeneutic phenomenology to explore people's experiences of sexuality and intimacy within the context of their illness. We present the Heideggerian concepts of Dasein, authenticity and truth, and draw on extracts from our interview transcripts to exemplify the different effects of joint and one-to-one interviews. We also discuss ethical considerations regarding these different interview approaches. Heidegger's philosophy does not preferentially support either method, but helps us to be clearer about the merits and limitations of each approach. Combining both approaches provides richer understanding of phenomena. © SAGE Publications 2011.
News Article | April 13, 2016
"Finally, this is a historic step for the Robird and our company", says Nico Nijenhuis, Master's student at the University of Twente and the CEO of Clear Flight Solutions. "We already fly our Robirds and drones at many locations, and doing this at an airport for the first time is really significant. Schiphol Airport has been interested for many years now, but Dutch law makes it difficult to test there. The situation is easier in Germany, which is why we are going to Weeze." Clear Flight Solutions is benefiting from the more relaxed rules at Weeze, as well as the relatively limited amount of air traffic there. The airport handles around 2.5 million passengers annually, most of whom come from the Netherlands. Schiphol Airport handles 55 million passengers annually. In addition to testing the Robird, the company will also train the Robird's 'pilot' and 'observer' (who watches other air traffic). "If you operate at an airport, there are a lot of protocols that you have to follow", says Nijenhuis. "You're working in a high-risk area and there are all kinds of things that you need to check. We use the latest technologies, but the human aspect also remains crucial." No option but to cross the border Nijenhuis thinks it is a shame that the situation at Schiphol Airport is so difficult, but he also says that a lot of work is currently being done to accommodate the drone sector in the Netherlands. "Airports are very important to us, however the law in the Netherlands means that this kind of testing is very sensitive. There are major differences with countries like Germany and France. It is unfortunate to see that so much activity in the drone sector is being drawn away from the Netherlands. Fortunately, our politicians are starting to understand this. Meetings between the Ministry of Infrastructure and Environment and the drone sector are going well, so I'm very happy about that. Finally we are all talking about the rules together. At the moment, it is often the case that professionals are not allowed to do anything, while amateurs are can do whatever they want. Luckily, that situation is changing. The government has also launched an awareness and information campaign. That is another positive development." The Robird is the flagship product of Clear Flight Solutions - a robotics and drone spin-off company of the University of Twente. The company was recently the beneficiary of an investment of €1.6 million from Cottonwood Euro Technology Fund. This investment has enabled Clear Flight Solutions to become a global leader in the field of bird management. "We have grown tremendously and we now employ 15 people", says Nijenhuis. "We have also become much more multidisciplinary. We even have a retired 747 captain on our team now, especially to help us with the airport projects. He knows the rules, so his input is very valuable." The link with research and teaching at the University of Twente is still strong - in February, three new graduates started work at Clear Flight Solutions. The work of an earlier graduate, Berend van der Grinten, meant that an autonomous Robird was very close to being finished as early as last summer. "I recently gave a lunchtime lecture at the University of Twente and there were over a hundred students there. Eighteen of them were very interested in completing a final thesis project. That is wonderful - we need more of that. There has also been a lot of interest from Saxion University of Applied Sciences. Our work goes further than just electrical engineering and mechanical engineering. We are working on multidisciplinary solutions to social issues - that's what makes this project so cool." The cost of bird control at airports worldwide is estimated in the billions, and does not consist only of material damage, as birds can also be the cause of fatal accidents. Birds worldwide also cause damage running into billions in the agrarian sector, the waste disposal sector, harbours, and the oil and gas industry. A common problem is that since birds are clever they quickly get used to existing bird control solutions, and simply fly around them. The high-tech Robird, however, convincingly mimics the flight of a real peregrine falcon. The flying behaviour of the Robird is so true to life that birds immediately believe that their natural enemy is present in the area. Because this approach exploits the birds' instinctive fear of birds of prey, habituation is not an issue. Explore further: 3D-printed robotic birds of prey are undergoing trials
Kievik M.,Saxion University |
Gutteling J.M.,University of Twente
Natural Hazards | Year: 2011
Although the risk of flooding poses a serious threat to the Dutch public, citizens are not very inclined to engage in self-protective behaviors. Current risk communication tries to enhance these self-protective behaviors among citizens, but is nonetheless not very successful. The level of citizens engaging in self-protective actions remains rather low. Therefore, this research strives to determine the factors that might enhance or lessen the intention to engage in self-protection among citizens. The study was a 2 (flood risk: high vs low) × 2 (efficacy beliefs: high vs low) between subject experiment. It was conducted to test how varying levels of flood risk and efficacy beliefs influence two different self-protective behaviors, namely information seeking and the intention to engage in risk mitigating or preventive behaviors. Furthermore, the relationship between information seeking and the intention to take self-protective actions was discussed. Results showed that high levels of flood risk lead to higher levels of both information seeking and the intention to engage in self-protective behaviors than low levels of flood risk. For efficacy beliefs, the same trend occurred. Also, results showed that information seeking seems to coincide with the intention to take preventive actions and acted as a mediator between the levels of perceived risk and efficacy and the intention to take self-protective actions. © 2011 The Author(s).
Michel-Verkerke M.B.,Saxion University |
Michel-Verkerke M.B.,University of Twente
International Journal of Medical Informatics | Year: 2012
Purpose: Providing access to patient information is the key factor in nurses' adoption of a Nursing Information System (NIS). In this study the requirements for information quality and the perceived quality of information are investigated. A teaching hospital in the Netherlands has developed a NIS as a module of the Hospital Information System. After the NIS was implemented in six wards in March 2009, the NIS was evaluated. Methods: A paper questionnaire was distributed among all 195 nurses, who used the system. Included in the research were 93 (48%) respondents. Also twelve NIS-users were interviewed, using the USE IT-model. Results: Nurses express a broad need for information of each patient. Although the history is essential, the information needs are not very specified. They expect complete, correct, up-to-date and accessible information of each patient. The information quality of the NIS is satisfactory, but needs improvement. Since the achieved quality of information depends largely on the data-entry by the nurses themselves, a controversy exists between the required information quality and the effort needed to accomplish this. Conclusions: The aspect of data-entry by the user of the information is not included in Information Quality-literature. To further increase the quality of information, a redesign of both process and system seems necessary, which reduces the information needs of nurses and rewards the nurse for accurate data-entry. © 2012 Elsevier Ireland Ltd.
Schon P.,Saxion University |
Schon P.,MESA Institute for Nanotechnology
Methods | Year: 2016
In the past 30 years, the atomic force microscope (AFM) has become a true enabling platform in the life sciences opening entire novel avenues for structural and dynamic studies of biological systems. It enables visualization, probing and manipulation across the length scales, from single molecules to living cells in buffer solution under physiological conditions without the need for labeling or staining of the specimen. In particular, for structural studies of nucleic acids and assemblies thereof, the AFM has matured into a routinely used tool providing nanometer spatial resolution. This includes ssRNA, dsRNA and nucleoprotein complexes thereof, as well as RNA aggregates and 2D RNA assemblies. By AFM unique information can be obtained on RNA based assemblies which are becoming increasingly important as novel unique building blocks in the emerging field of RNA nanotechnology. In addition, the AFM is of fundamental relevance to study biological relevant RNA interactions and dynamics. In this short review first the basic functioning principles of commonly used AFM modes including AFM based force spectroscopy will be briefly described. Next a brief overview will be given on structural studies that have been done related to AFM topographic imaging of RNA, RNA assemblies and aggregates. Finally, an overview on AFM beyond imaging will be provided. This includes force spectroscopy of RNA under physiological conditions in aqueous buffer to probe RNA interaction with proteins and ligands as well as other AFM tip based RNA probing. The main intention of this short review to give the reader a flavor of what AFM contributes to RNA research and engineering. © 2016 Elsevier Inc.
Timmers C.F.,Saxion University |
Glas C.A.W.,University of Twente
Journal of Documentation | Year: 2010
Purpose: The main purpose of this paper is to describe the development of an instrument designed to measure information-seeking behaviour of undergraduate students during study assignments. Design/ strategies (α = 0.68), a 14-item scale for evaluating information (α = 0.74), a six-item scale for referring to information (α = 0.81) and a 12-item scale for regulation activities when seeking information (α = 0.75). Originality/value: The four scales for information-seeking behaviour can be used to monitor and evaluate this behaviour of students in higher education. © Emerald Group Publishing Limited.
Timmers C.F.,Saxion University |
Braber-Van Den Broek J.,Saxion University |
Van Den Berg S.M.,University of Twente
Computers and Education | Year: 2013
Feedback can only be effective when students seek feedback and process it. This study examines the relations between students' motivational beliefs, effort invested in a computer-based formative assessment, and feedback behaviour. Feedback behaviour is represented by whether a student seeks feedback and the time a student spends studying the feedback. The motivational beliefs examined in this study are success expectancy and task-value beliefs. Results show that the effort invested in the formative assessment was predicted by task-value beliefs, but not by success expectancy beliefs. Furthermore, feedback seeking was predicted by success expectancy as well as task-value beliefs, while feedback study time was not. In addition, feedback seeking was predicted by student effort invested in the formative assessment. © 2012 Elsevier Ltd. All rights reserved.
Timmers C.,Saxion University |
Veldkamp B.,University of Twente
Computers and Education | Year: 2011
Three studies are presented on attention paid to feedback provided by a computer-based assessment for learning on information literacy. Results show that the attention paid to feedback varies greatly. In general the attention focuses on feedback of incorrectly answered questions. In each study approximately fifty percent of the respondents paid attention to feedback of incorrect answers only. Approximately another twenty-five percent did not pay attention to feedback at all. Results suggest that differences in attention paid to feedback are influenced by task difficulty and test length. Supervision, however, does not seem to influence the average attention paid to feedback. On the other hand, results show that indirect and direct supervision lead to a greater impact of feedback provided by a computer-based assessment for learning as the number increases of students taking the test and, as a consequence, paying attention to feedback. © 2010 Elsevier Ltd. All rights reserved.
Michel-Verkerke M.B.,Saxion University |
Spil T.A.M.,University of Twente
Methods of Information in Medicine | Year: 2013
Background and Objective: The USE IT-model integrates theories about adoption and diffusion of innovations and is suitable to predict and evaluate the success of an information system from a user's perspective. The USE IT-model consists of four determinants: relevance, requirements, resources and resistance, which are measured at the macro-level (organizational), and at the micro-level (individual). After applying the USE IT approach in several researches we evaluated and updated the USE IT-model. Methods: We used the USE IT-model in ten case studies in healthcare and compared the results of the studies with the determinants and dimensions of the USE IT-model. Results: The quality of the implementation process is part of the innovation process-dimension and therefore relocated as a dimension of macro-resistance. The improvements and value in the relevance determinant are made more concrete by quality, efficiency, effectiveness, and task support. The dimensions of micro-resistance are reduced, and the dimension negative consequences is added. Also the dimensions of macro and micro-requirements are made more specific to express the importance of information quality, availability and accessibility. Discussion and Conclusion: The research resulted in the updated USE IT-adoption-model to predict and evaluate the adoption of information systems in healthcare. The structure and determinants of the original USE IT-model with a distinction between the macro and micro-level remained unchanged. © Schattauer 2013.