Recent improvements in the mechanic arts     

F.B. Brock 《Journal of The Franklin Institute》1882,114(2):139-140

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Book reviews     

A. G. M. Ishumi  Birgit Brock Utne  Donald P. Ely  Arthur Gillette 《Prospects》1979,9(1):115-121

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Newsroom Workers’ Job Satisfaction Contingent on Position and Adaptation to Digital Disruption     

Brock Ternes  Laveda J. Peterlin  Scott Reinardy 《Journalism Practice》2018,12(4):497-508

A survey of journalists in the United States (N?=?1181) finds that job satisfaction during the era of digital disruption varies across job titles. Previous studies have examined job satisfaction of these job titles individually, but this study compares job satisfaction among four primary occupations in the newspaper newsroom. Desk workers demonstrate lower levels of job satisfaction than non-desk workers, while sports journalists report higher levels of job satisfaction than non-sports workers. Furthermore, online responsibilities appear to be negatively received by desk workers, yet positively received by sports journalists. Open-ended explanations and the quantitative survey results discuss the implications of the demands, adaptation skills, and autonomy of newspaper workers on job satisfaction.  相似文献   

Editor's commentary     

Bernard L. Brock 《Communication Studies》2013,64(1):80-82

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Network effects: Communities,devices, and disciplines     

David C. Brock 《Metascience》2014,23(1):113-116

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Geometry and the Universities: Euclid and his Modem Rivals 1860–1901     

W. H. Brock 《History of education》2013,42(2):21-35

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Courseware     

Dee Brock  Linda Resnik 《Innovative Higher Education》1978,2(3):245-249

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Classification of trampoline jumps using inertial sensors     

Thomas Helten  Heike Brock  Meinard Müller  Hans-Peter Seidel 《Sports Engineering》2011,14(2-4):155-164

The automatic segmentation and classification of an unknown motion data stream according to given motion categories constitute an important research problem with applications in computer animation, medicine and sports sciences. In this paper, the scenario of trampoline motions is considered, where an athlete performs a routine consisting of sequence of jumps that belong to predefined motion categories such as pike jumps or somersaults. As main contribution, a fully automated approach for capturing, segmenting, and classifying trampoline routines according to these categories is introduced. Since trampoline motions are highly dynamic and spacious, optical motion capturing is problematic. Instead, it is reverted to a small number of inertial sensors attached to the athlete’s body. To cope with measurement noise and performance differences, suitable feature and class representations are introduced that are robust to spatial and temporal variations while capturing the characteristics of each motion category. The experiments show that the approach reliably classifies trampoline jumps across different athletes even in the presence of significant style variations.  相似文献   

New flame: By Hugh Barty-King. Pp. 262. Graphmitre,Tavistock. 1985. £11.50     

W.H Brock 《Endeavour》1985,9(4):209

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The influence of prior knowledge and viewing repertoire on learning from video     

Jelle de Boer  Piet A. M. Kommers  Bert de Brock  Jos Tolboom 《Education and Information Technologies》2016,21(5):1135-1151

Video is increasingly used as an instructional tool. It is therefore becoming more important to improve learning of students from video. We investigated whether student learning effects are influenced through an instruction about other viewing behaviours, and whether these learning effects depend on their prior knowledge. In a controlled environment, 115 students watched a number of instructional videos about the technical equipment needed in a course on digital photography. Every second student was instructed about other possible viewing behaviours. A pre-post-retention test was carried out to calculate learning effects. The differences with respect to the learning effects of students who received an awareness instruction on an alternative viewing strategy were not significantly different. The differences as observed in our earlier experiment however could not be reproduced. Students with a broad viewing repertoire showed higher learning effects than students with a narrow repertoire. Furthermore, students with a strategic viewing approach also showed higher learning effects. Certain conditions have to be met: the technical and didactical quality of the video must be good, the integration in a learning task must be apparent, students must be aware of their viewing behaviour, and teachers must be aware of their students’ viewing behaviour in order to enrich the viewing repertoire of students when they have at least some basic knowledge e.g. after several lessons on the topics at hand. In future research, this study should be replicated using more complex video episodes than the instruction videos we used in our experiments that were only on the factual knowledge level of the taxonomy of Bloom. Moreover, replication of this study with a larger sample size could yield a significant improvement in learning effects. This is plausible because students need an amount of prior knowledge beyond a certain threshold value in order to be able to expand their knowledge network in their long term memory. Finally, additional media player functionality, facilitating effective student learning from video, can be described based on the results of this study.  相似文献