5,129 research outputs found
Multimedia, PC Passport and ECDL
No full textThe multimedia photoplus 7 tutorial was created using camtasia. This will be available to all computing students, not just multimedia. A useful beginner's guide to Photo Editing Features. Ideal too for Distance Learners. The PC passport and ECDL resources are multi-choice assessments created using the Castle Toolkit.
Part of eMerge: a programme of E-learning staff development for Scotland's colleges.
A PC parallel port button box provides millisecond response time accuracy under Linux
No full textFor psychologists, it is sometimes necessary to measure people's reaction times to the nearest millisecond. This article describes how to use the PC parallel port to receive signals from a button box to achieve millisecond response time accuracy. The workings of the parallel port, the corresponding port addresses, and a simple Linux program for controlling the port are described. A test of the speed and reliability of button box signal detection is reported. If the reader is moderately familiar with Linux, this article should provide sufficient instruction for him or her to build and test his or her own parallel port button box. This article also describes how the parallel port could be used to control an external apparatus
Web-based multimodal graphs for visually impaired people
No full textThis paper describes the development and evaluation of Web-based multimodal graphs designed for visually impaired and blind people. The information in the graphs is conveyed to visually impaired people through haptic and audio channels. The motivation of this work is to address problems faced by visually impaired people in accessing graphical information on the Internet, particularly the common types of graphs for data visualization. In our work, line graphs, bar charts and pie charts are accessible through a force feedback device, the Logitech WingMan Force Feedback Mouse. Pre-recorded sound files are used to represent graph contents to users. In order to test the usability of the developed Web graphs, an evaluation was conducted with bar charts as the experimental platform. The results showed that the participants could successfully use the haptic and audio features to extract information from the Web graphs
Millisecond accuracy video display using OpenGL under Linux
No full textTo measure people’s reaction times to the nearest millisecond, it is necessary to know exactly when
a stimulus is displayed. This article describes how to display stimuli with millisecond accuracy on a
normal CRT monitor, using a PC running Linux. A simple C program is presented to illustrate how this
may be done within X Windows using the OpenGL rendering system. A test of this system is reported
that demonstrates that stimuli may be consistently displayed with millisecond accuracy. An algorithm
is presented that allows the exact time of stimulus presentation to be deduced, even if there are relatively
large errors in measuring the display time
Is there a connection between high transport of water in the Rockall Trough and ecological changs in the North Sea?
No full textChanges in the ecosystem of the North Sea may occur as pronounced inter-annual and step-wise shifts as well as gradual trends. Marked inter-annual shifts have occurred at least twice in the last two decades, the late 1980s and the late 1990s, that appear to reflect an increased inflow of oceanic water and species. Numerical modelling has demonstrated a link between altered rates of inflow of oceanic water into the northern North Sea and a regime shift after 1988. In 1989 and 1997 oceanic species not normally found in the North Sea were observed there, suggesting pulses of oceanic water had entered the basin and triggered the subsequent ecosystem change. The oceanic water has origins mainly west of Britain in the Rockall Trough, where the long-term mean volume transport is around 3.7 Sv northwards (1 Sv=10 6 m3s-1), but in early 1989 and early 1998 was observed to be more than twice the mean value, reaching over 7 Sv. These periods of high transport coinciding with the inferred pulses of oceanic water into the North Sea suggest a connection through the continental shelf edge current
Frontmatter (Titlepage, Table of Contents, Author List, PC List, Reviewer List)
No full textFront matter including table of contents, author list, PC list, and reviewer list
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An Empirical Test of the Effects of Political Correctness: Implications for Censorship, Self-Censorship, and Public Deliberation
No full textFor over 30 years, scholars, journalists, and politicians have debated the costs and benefits of Political Correctness (PC). Those who support PC claim that it benefits historically disadvantaged groups by protecting them from discrimination and encourages diverse representation. Opponents to PC claim that it inhibits freedom of expression and thus public deliberation. However, despite three decade of debate, PC is under theorized and has received little empirical investigation. In this dissertation, following theorizing by Robinson and Reid (2016a), and research on social identity, self-categorization, and public deliberation, I propose that PC is rooted in identity politics (on the right and left), and should be viewed as a tool to control discourse in intergroup conflict. This dissertation argues that PC is an ideology that (among other things) relies on adherents’ perceptions of protected and perpetrator groups, involves the imposition of social sanctions and censorship, and justifies such actions by appealing to the moral failings of actors whose actions are judged anti-PC (e.g., sexist or racist). Further, individuals who believe that their views and actions may be perceived as anti-PC may be more likely to self-censor to avoid sanctions and being judged as immoral. This may ultimately affect public deliberation due to a decreased tolerance of diverse viewpoints. The relationships between PC, perceptions of victimhood, support for censorship, self-censorship, and public deliberation were tested across three studies. The survey findings from Study 1 indicate that participants’ perceptions of victimhood were predicted by their political ideology, such that the more liberal participants were the more likely they were to perceive victimization among racial, sexual, and religious minorities, and the more conservative participants were, the more likely they were to perceive victimization among Whites, Christians, and males. The same effects of political ideology were observed for support for censorship of political opponents. Study 2 primed participants using either PC code words or a control that did not include code words, and found that the more conservative participants were, the more likely they were to report self-censoring, but only after exposure to a PC prime. Study 3 had participants engage in an online conversation with a confederate under either a PC or non-PC prime. Participants exposed to the PC prime argued with lower levels of integrative complexity (a measure of the extent to which people recognize alternative view points) than those in a non-PC condition, and the more liberal participants were, the less of integrative complexity they exhibited. Taken together, these studies confirm that PC involves competition between liberals and conservatives, that PC norms produce self-censorship among moderates and relatively conservative students, and produce less cognitively complex reasoning about political subjects, particularly among liberals
High efficiency implementation of PC and PC stable algorithms yields three-dimensional graphs of information flow for the Earth' atmosphere
No full textSeptember 3, 2014.Causal discovery algorithms have recently been applied to several climate applications. In particular, in prior work we have developed methods to recover pathways of interaction in the global climate system, using the classic PC algorithm. However, standard implementations of the PC algorithm cannot handle the large number of variables and temporal models required for this application. This technical report shows that a more efficient implementation of the PC algorithm can provide speed gains of a factor of 1,000 or more. This in turn enables us to calculate graphs of information flow with much higher resolution grids. Furthermore, we can now - for the first time ever - calculate information flow graphs that extend over three dimensions, i.e. rather than just including one layer of the planet's atmosphere we can now capture interactions across several height layers
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