478 research outputs found
Haunting in the historical biopic : Lincoln
Lincoln features several key moments in which the conventional, realist coordinates of the historical biopic open to a deeper sense of time and place, evoked in the film's references to clairvoyance, haunting, and ‘bad dreams’ – aspects of Lincoln's interior life that are well known but seldom expressed in film. The theme of haunting in Lincoln is rendered directly, but it is also suggested in the film's multiple references to the medium of photography, and in scenes that recall the flicker effect of early film. The film's complex understanding of time underlines the uncanny nature of the historical biopic, and the strange, almost phantasmatic wish at its core – the wish to impersonate and revivify the dead – a wish that is especially visible in films that take Abraham Lincoln as their subject.PostprintPeer reviewe
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Effective Temperature Of Uranus
NASA NGR 09-015-047, NGR 22-007-270, NGR 44-012-152Astronom
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DSMC Modeling Of Gasdynamics, Radiation And Fine Particulates In Ionian Volcanic Jets
Aerospace Engineerin
Non-restricted Access to Model Solutions : A Good Idea?
In this article, we report an experiment where students in an introductory programming course were given the opportunity to view model solutions to programming assignments whenever they wished, without the need to complete the assignments beforehand or to wait for the deadline to pass. Our experiment was motivated by the observation that some students may spend hours stuck with an assignment, leading to non-productive study time. At the same time, we considered the possibility of students using the sample solutions as worked examples, which could help students to improve the design of their own programs. Our experiment suggests that many of the students use the model solutions sensibly, indicating that they can control their own work. At the same time, a minority of students used the model solutions as a way to proceed in the course, leading to poor exam performance.Peer reviewe
Effects of valent image-based secondary tasks on verbal working memory
Two experiments examined if exposure to emotionally valent image-based secondary tasks introduced at different points of a free recall working memory (WM) task impair memory performance. Images from the International Affective Picture System (IAPS) varied in the degree of negative or positive valance (mild, moderate, strong) and were positioned at low, moderate and high WM load points with participants rating them based upon perceived valence. As predicted, and based on previous research and theory, the higher the degree of negative (Experiment 1) and positive (Experiment 2) valence and the higher the WM load when a secondary task was introduced, the greater the impairment to recall. Secondary task images with strong negative valance were more disruptive than negative images with lower valence at moderate and high WM load task points involving encoding and/or rehearsal of primary task words (Experiment 1). This was not the case for secondary tasks involving positive images (Experiment 2), although participant valence ratings for positive IAPS images classified as moderate and strong were in fact very similar. Implications are discussed in relation to research and theory on task interruption and attentional narrowing and literature concerning the effects of emotive stimuli on cognition
Workshop: Cognitive Architectures for Social Human-Robot Interaction
Social HRI requires robots able to use appropriate,
adaptive and contingent behaviours to form and maintain en- gaging social interactions with people. Cognitive Architectures emphasise a generality of mechanism and application, making them an ideal basis for such technical developments. Following the successful first workshop on Cognitive Architectures for HRI at the 2014 HRI conference, this second edition of the workshop focusses specifically on applications to social interaction. The full-day workshop is centred on participant contributions, and structured around a set of questions to provide a common basis of comparison between different assumptions, approaches, mechanisms, and architectures. These contributions will be used to support extensive and structured discussions, with the aim of facilitating the development and application of cognitive architectures to social HRI systems. By attending, we envisage that participants will gain insight into how the consideration of cognitive architectures complements the development of au- tonomous social robots
Abundances of ammonia and carbon disulfide in the Jovian stratosphere following the impact of comet Shoemaker‐Levy 9
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/95648/1/grl8459.pd
Usability and Usage of Interactive Features in an Online Ebook for CS Teachers
There are too few secondary school computing teachers to meet international needs for growing secondary school computing education. Our group has created an ebook to help prepare secondary teachers to teach the programming and big data concepts in the new AP Computer Science Principles course. The ebook was designed using principles from educational psychology, specifically worked examples and cognitive load. The ebook interleaves worked examples and interactive practice activities, which we believe will lead to more efficient and effective learning than more typical approaches to learning programming. This paper reports the results from initial studies of our ebook. First, we conducted a usability study comparing three different ebook platforms. Next, we conducted a study of teacher use of the ebook. Ten teachers worked through the first eight chapters of the ebook at their own pace. Five of the ten teachers completed the first eight chapters which is a 50% completion rate. Significantly, teachers who used more of the interactive features in the ebook did better on the post-tests and reported higher confidence in their ability to teach the material than teachers who used few of the interactive features
Applying a User-centred Approach to Interactive Visualization Design
Analysing users in their context of work and finding out how and why they use different information resources is essential to provide interactive visualisation systems that match their goals and needs. Designers should actively involve the intended users throughout the whole process. This chapter presents a user-centered approach for the design of interactive visualisation systems. We describe three phases of the iterative visualisation design process: the early envisioning phase, the global specification hase, and the detailed specification phase. The whole design cycle is repeated until some criterion of success is reached. We discuss different techniques for the analysis of users, their tasks and domain. Subsequently, the design of prototypes and evaluation methods in visualisation practice are presented. Finally, we discuss the practical challenges in design and evaluation of collaborative visualisation environments. Our own case studies and those of others are used throughout the whole chapter to illustrate various approaches
The H₃⁺ ionosphere of Uranus: decades-long cooling and local-time morphology
The upper atmosphere of Uranus has been observed to be slowly cooling between 1993 and 2011. New analysis of near-infrared observations of emission from H₃⁺ obtained between 2012 and 2018 reveals that this cooling trend has continued, showing that the upper atmosphere has cooled for 27 years, longer than the length of a nominal season of 21 years. The new observations have offered greater spatial resolution and higher sensitivity than previous ones, enabling the characterization of the H₃⁺ intensity as a function of local time. These profiles peak between 13 and 15 h local time, later than models suggest. The NASA Infrared Telescope Facility iSHELL instrument also provides the detection of a bright H₃⁺ signal on 16 October 2016, rotating into view from the dawn sector. This feature is consistent with an auroral signal, but is the only of its kind present in this comprehensive dataset
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