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1.
Koen van Boerdonk Rob Tieben Sietske Klooster Elise van den Hoven 《Personal and Ubiquitous Computing》2009,13(8):551-567
When meeting someone new, the first impression is often influenced by someone’s physical appearance and other types of prejudice.
In this paper, we present TouchMeDare, an interactive canvas, which aims to provide an experience when meeting new people,
while preventing visual prejudice and lowering potential thresholds. The focus of the designed experience was to stimulate
people to get acquainted through the interactive canvas. TouchMeDare consists of a flexible, opaque canvas, which plays music
when touched simultaneously from both sides. Dynamic variation of this bodily contact is reflected through real-time adaptations
of the musical compositions. Two redesigns were qualitatively and quantitatively evaluated and a final version was placed
in the Lowlands Festival as a case study. Evaluation results showed that some explanation was needed for the initial interaction
with the installation. On the other hand, after this initial unfamiliarity passed, results showed that making bodily contact
through the installation did help people to get acquainted with each other and increased their social interaction. 相似文献
2.
Caroline Hummels Kees C. J. Overbeeke Sietske Klooster 《Personal and Ubiquitous Computing》2007,11(8):677-690
The world is inherently meaningful for us, i.e. we perceive the world in terms of what we can do with it, and by physically
interacting with it we access this meaning and express the meaning. We believe that this is the core reason and foundation
for turning to movement-based interaction. ‘Interaction creates meaning’ does not only hold for users during interaction but
also for designers when generating ideas and developing concepts. Therefore, we postulate that if one truly likes to design
for movement-based interaction, one has to be or become an expert in movement, not just theoretically, by imagination or on
paper, but by doing and experiencing while designing. In order to do so, we believe that designers need design tools, techniques,
knowledge, awareness and skills that support their search for expressive, rich behaviour. Our search for this support resulted
in several methods, tools and knowledge that help designers exploring, visualising and reflecting on interactions. Our developed
methods and tools such as the Design Movement approach with its choreography of interaction, gestural design tools, interactive
installations and interactive tangible sketching, have not only supported and inspired designers to design for movement-based
interaction, but also resulted in surprising, fresh designs in comparison with the limited scope of rather uniform and traditional
electronic consumer products. This paper discusses the possibilities and limitations of our approach. 相似文献
3.
John W Cone Wilhelmina Clin-Theil Aart Malestein Arie Th van 't Klooster 《Journal of the science of food and agriculture》1989,49(2):173-183
The degradability of starch from various feedstuffs was investigated in vitro by incubation of 500-mg amounts in 50 ml of a 3:1 rumen fluid/buffer solution at 39°C for 6 h. The rumen fluid was obtained from one of three cows fed on hay or hay and concentrate. The degree of degradation after 6 h incubation varied strongly for the 23 feedstuffs investigated. The degradation of starch from the same feedstuff in rumen fluid from a hay-fed cow was significantly lower than in rumen fluid from a concentrate-fed cow. It seemed that differences in degradability between feedstuffs were not determined by the ration of the donor cow, but merely by the properties of the starch. Processed feedstuffs showed a higher degradation of their starch than the unprocessed feedstuffs, independent of the ration of the donor cow. Particle size influenced degradation, but not of the starch of tapioca meal. A fairly constant ranking in degradability between the various feedstuffs was found. Fermentation of mixtures of feedstuffs showed about the same rate of degradation as found for the single products. Only when great differences in the degree of degradability existed was the degradation of the total starch enhanced. The time of collection of rumen fluid strongly influenced the in-vitro degradation of starch. 相似文献
4.
SP Alsemgeest GA van ''t Klooster AS van Miert CK Hulskamp-Koch E Gruys 《Canadian Metallurgical Quarterly》1996,53(1-2):179-184
OBJECTIVE: To determine placental transfer of ketanserin and to assess the effect of serotonin-2 receptor blockade by ketanserin on serotonin- and phenylephrine-induced vasoconstriction. STUDY DESIGN: Five chronically instrumented pregnant ewes at 120 days gestation were injected with 20 mg ketanserin i.v., and fetal and maternal arterial samples were obtained at predetermined intervals to assess placental transfer. Maternal and fetal responses of blood flows and pressures were determined after injected of serotonin (20 micrograms/kg) or phenylephrine (10 micrograms/kg) before and after ketanserin (0.75 mg/kg). RESULTS: In the ewe, ketanserin is transferred across the placenta and reaches measurable levels in the fetal lamb. Ketanserin blocks the maternal and fetal serotonin-induced rise in arterial pressure, but not the serotonin-induced reduction in uterine blood flow. CONCLUSION: In the pregnant ewe, the serotonin-induced rise in maternal and fetal blood pressure is effectively antagonized by ketanserin, whereas the serotonin-induced reduction in uterine blood flow is not. 相似文献
5.
It is known that a direct radial integration, used to compute the far-field from uniformly spaced plane-polar near-field measurements requires the evaluation of a large amount of Bessel functions and hence CPU time. Up to 1985 only unequally spaced fast Hankel algorithms were available. Hansen [3] developed an algorithm that was usable for equally spaced measurements points, but only for order zero. His theory is generalised in this paper and applied to a plane-polar near-field to far-field transformation. 相似文献
6.
7.
Alexander J.A.M. van Deursen Jan A.G.M. van Dijk Peter M. ten Klooster 《Telematics and Informatics》2015
We investigate types of Internet activities among a representative sample of the Dutch population from 2010 to 2013. We examined usage patterns of seven types of Internet activities (i.e., information, news, personal development, commercial transaction, social interaction, leisure, and gaming) and related these patterns with gender, age, education, and income. Activities related to news, personal development, commercial transaction, and social interaction increased in popularity. For most capital enhancing activities, men, younger people, higher educated people, and people with higher than average incomes were prominent. These observations, however, are subject to change. The Internet seems to provide increasingly more capital-enhancing opportunities for those with higher education and income, which would accordingly reinforce their already strong positions in society. 相似文献
8.
JM van der Klooster AF Grootendorst PJ Ophof JW Brouwers 《Canadian Metallurgical Quarterly》1998,52(4):150-154
We report a patient with bronchial asthma who presented with pneumomediastinum, pneumopericardium, pneumoretroperitoneum, pneumorrhachis and extensive subcutaneous emphysema, after a period of coughing. Pathogenesis, diagnostic procedures and treatment of pneumomediastinum and its complications are discussed. 相似文献
9.
The Cerdanya valley in the eastern Pyrenees has a physical unity into which a political frontier has been imposed to divide it. The social and cultural repercussions of this Franco-Spanish border have created obstacles to marriage which are not due to topography. Choice of month of marriage is under cultural control and the study of seasonality in marriages recorded in the registers of all the Cerdan parishes on both sides of the border demonstrated differences over time and between French and Spanish sectors. It is suggested that these changes demonstrate the process of distancing of the two populations. Cluster and correspondence analysis showed progressive differentiation of the seasonality patterns of the French and Spanish Cerdans despite the geographic unity of the valley. Sociocultural factors are presumed responsible. 相似文献
10.
Seal integrity and seal strength are important requirements in the heat sealing of flexible packaging. In this article, the influence of talc compounds and different process parameters, such as film tension and contamination on the sealant films consisting of polypropylene and low-density polyethylene blend were investigated. According to the results, increasing the talc ratio from 0% wt to 30% wt positively influenced both hot and cold seal strength. Among different polymer blends having same talc ratio, the sample having the lowest melt flow index (2.84 dg/min at 230°C and 2.16 kg) showed the highest cold seal strength with 9.07 N/25 mm. On the other hand, in the samples with higher melt flow indexes, less seal integrity issues were observed in the presence of contaminants. Elevated film tensions from 0 to 0.4 N/mm2 enhanced the seal strengths significantly at the seal initiation temperatures of each film. However, this situation changed at higher operating temperatures due to the increased orientation and brittleness. Besides, in the presence of contaminant coffee particles at the seal interphase, high film tensions adversely affected the seal integrity since the average leakage increased 2.7% for samples A and B, and 7.4% for sample C. In summary, it has been shown that talc incorporation can improve seal strength, high MFI can fill the gaps at the seal interphase and the high levels of film tension (above 0.16 N/mm2) during sealing as well as the contamination need to be avoided to ensure integrity sealing. 相似文献