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Ned Brophy-Williams Matthew William Driller Cecilia Mary Shing James William Fell Shona Leigh Halson 《Journal of sports sciences》2015,33(13):1403-1410
The purpose of this investigation was to measure the interface pressure exerted by lower body sports compression garments, in order to assess the effect of garment type, size and posture in athletes. Twelve national-level boxers were fitted with sports compression garments (tights and leggings), each in three different sizes (undersized, recommended size and oversized). Interface pressure was assessed across six landmarks on the lower limb (ranging from medial malleolus to upper thigh) as athletes assumed sitting, standing and supine postures. Sports compression leggings exerted a significantly higher mean pressure than sports compression tights (P < 0.001). Oversized tights applied significantly less pressure than manufacturer-recommended size or undersized tights (P < 0.001), yet no significant differences were apparent between different-sized leggings. Standing posture resulted in significantly higher mean pressure application than a seated posture for both tights and leggings (P < 0.001 and P = 0.002, respectively). Pressure was different across landmarks, with analyses revealing a pressure profile that was neither strictly graduated nor progressive in nature. The pressure applied by sports compression garments is significantly affected by garment type, size and posture assumed by the wearer. 相似文献
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In two experiments, saccharin (CS) and lithium chloride (US) were paired in a context consisting of specific visual, auditory, tactual, and olfactory cues. The saccharin aversion was then extinguished in a context free from conditioning-context cues. Later, saccharin preference tests were given in the presence and absence of these cues. The results indicated that the background cues of the conditioning trial controlled the amount of saccharin drunk on extinction trials, and, furthermore, that extinction of the taste aversion was context specific; i.e., groups given extinction trials in a different (from conditioning) context retained their saccharin aversion in the conditioning context only. The results indicate an important role played by the exteroceptive context in taste-aversion conditioning. 相似文献
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John P. Dougherty Ned F. Kock Cheryl Sandas Robert M. Aiken 《Education and Information Technologies》2002,7(2):137-154
Information technology holds the promise of increased productivity. However, rapidly evolving tools require a professional able to incorporate these tools into their careers effectively, which signals the need for IT curriculum development initiatives that incorporate the use of complex, domain-specific IT applications in specific professional fields. This paper reports on a study that addresses this need, by developing, assessing and refining a curriculum development framework. The Information Technology Fluency (ITF) framework is a methodology for constructing components (case studies) for inclusion into existing or newly proposed courses to help students develop the skills needed for this challenge. Results obtained using the framework are reported, compared to similar work at a different institution, and used to suggest improvements to the framework. 相似文献
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This article argues that two significant recent influential historical novels about the Holocaust, Hitler’s Daughter (1999) and The Boy in the Striped Pyjamas (2006), reprise the genre traits of the Bildungsroman or novel of development and can be regarded as remarkably effective in engaging an active reader. Both novels, intended for children and younger adolescent readers, are focused on initially sequestered child protagonists from a perpetrator culture who are unable to fully understand their circumstances but undergo formative experiences by leaving ‘home’, legible both as a physical domicile and a site of indoctrination and repression. As they journey away from a limited conception of biological family the novel’s protagonists are able to reject constricting modes of social conditioning that repress authentic self-expression, curiosity, and impartial ethical judgment. In both novels the protagonists transform their perception of their circumstances by becoming resourceful bricoleurs, unearthing imaginative possibilities in their immediate environment that allow them to forestall emotional isolation and the dehumanization of designated ‘Others’ such as the Jews. The article suggests that while The Boy in the Striped Pyjamas has been read as reinforcing the myth of German innocence, its typological representation of a ‘dangerous family’ and its implied affirmation of Bruno’s explorative instincts, empathetic capacities, and commitment to friendship, allow a reader greater recognition of the ‘banal ideologies and institutions occupied by the perpetrator’ (Ann Rider).
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Chaotic waveforms are natural information carriers since a correspondence can be established between the symbolic dynamics of a chaotic oscillator and the symbols of a message. Message symbols can be efficiently encoded in a chaotic waveform by applying vanishingly small perturbations to an oscillator to guide its symbolic dynamics to follow a desired course. Recently, two chaotic hybrid dynamical systems were shown to have matched filters enabling robust reception of chaotic communication waveforms in the presence of noise. The first of these, the exact shift oscillator, produces waveforms with desirable properties similar to antipodal signaling, but a physical implementation may be difficult to control using small perturbations. The second oscillator, the exact folded-band oscillator, produces less optimal waveforms but is more easily controlled. Here we introduce a method for generating waveforms of the exact shift oscillator by summing waveforms from a bank of easily controlled exact folded-band oscillators. We show that any solution of the exact shift oscillator can be so constructed using only three folded-band oscillators. Thus, this scheme allows us to realize the advantages of both chaotic systems while overcoming their individual disadvantages, thereby enabling practical chaos communications. 相似文献
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Ned Kock Ruth Chatelain-Jardón Jesus Carmona 《Decision Sciences Journal of Innovative Education》2009,7(2):359-375
It seems that surprise events have the potential to turn short-term memories into long-term memories, an unusual phenomenon that may have limited but interesting applications in learning tasks. This surprise-enhanced cognition phenomenon is theoretically modeled based on the notion that many human mental traits have evolved through natural selection; a mathematical analysis building on Price's covariance theorem is employed in this modeling effort. Additionally, the phenomenon is discussed in the context of an online learning task, based on a study involving 186 student participants. A simulated threat was incorporated into a human–computer interface with the goal of increasing the interface's knowledge-transfer effectiveness. The participants were asked to review Web-based learning modules and subsequently take a test on what they had learned. Data from six learning modules in two experimental conditions were contrasted. In the treatment condition, a Web-based screen with a snake in attack position was used to surprise the participants; the snake screen was absent in the control condition. As predicted, the participants in the treatment condition did significantly better in the test for the modules immediately before and after the snake screen than the participants in the control condition. These findings are extrapolated to classroom applications in general. Ethical considerations are also discussed. 相似文献
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Ned Kock Jacques Verville Vanessa Garza 《Decision Sciences Journal of Innovative Education》2007,5(2):333-355
Is the use of an online course delivery format, when compared with the more traditional face‐to‐face format, good or bad in the context of university education? Those who subscribe to the no‐significant‐difference perspective argue that online delivery is good, because it allows students with time and geographic distance constraints to obtain the education that they need, with no significant negative impact on the quality of the learning experience. Others argue that online delivery is bad, advocating a version of the competing significant‐difference perspective, because the electronic communication media used for online delivery are not rich or natural enough to enable effective learning. This study contrasted students perceptions and grades in two different sections of the same course: one delivered entirely online and the other delivered face to face. Data were collected and analyzed at two points in time, namely, at the middle and end of a long semester. The study found support for both the no‐significant‐ and significant‐difference perspectives. At the middle of the semester, students in the online condition perceived communication ambiguity as significantly higher, and also obtained significantly lower grades, than students in the face‐to‐face condition. At the end of the semester, no significant differences were found. 相似文献
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Ned O'Gorman 《Quarterly Journal of Speech》2013,99(1):44-72
This essay presents Dwight D. Eisenhower's presidential rhetoric as an iteration of an American synecdochal sublime. Eisenhower's rhetoric sought to re-aim civic sight beyond corporeal objects to the nation's transcendental essence. This rhetoric is intimately connected to prevailing political anxieties and exigencies, especially the problem of “the Bomb” and the related philosophy of deterrence. Over and against the material presence of the atomic bomb, which threatened to concentrate national energies, Eisenhower advanced an expansive vision of national “spiritual” being to which corporeal images could only gesture. Correlatively, he positioned himself as a kind of priestly mediator. Therefore, he not only justified a strong deterrent stance in the Cold War, but made moral sense of it. 相似文献