The effect of transparency on recognition of overlapping objects

Are overlapping objects easier to recognize when the objects are transparent or opaque? It is important to know whether the transparency of X-ray images of luggage contributes to the difficulty in searching those images for targets. Transparency provides extra information about objects that would normally be occluded but creates potentially ambiguous depth relations at the region of overlap. Two experiments investigated the threshold durations at which adult participants could accurately name pairs of overlapping objects that were opaque or transparent. In Experiment 1, the transparent displays included monocular cues to relative depth. Recognition of the back object was possible at shorter durations for transparent displays than for opaque displays. In Experiment 2, the transparent displays had no monocular depth cues. There was no difference in the duration at which the back object was recognized across transparent and opaque displays. The results of the two experiments suggest that transparent displays, even though less familiar than opaque displays, do not make object recognition more difficult, and possibly show a benefit. These findings call into question the importance of edge junctions in object recognitio

Those Songs My Mother Used To Sing

https://digitalcommons.library.umaine.edu/mmb-vp/6375/thumbnail.jp

To Night

https://digitalcommons.library.umaine.edu/mmb-vp/6472/thumbnail.jp

Those Songs My Mother Used To Sing

https://digitalcommons.library.umaine.edu/mmb-vp/6376/thumbnail.jp

Jazz musicians and South Slavic oral epic bards

Albert Lord writes in The Singer of Tales (2000:13) that for the South Slavic oral epic poet, or guslar, "the moment of composition is the performance." The guslar is concurrently performer, composer, poet, and singer. In performance, he participates creatively in shaping the tradition of which he is a part rather than acting merely as a transmitter. Similarly, though in a much more restricted sense, European art music of the late nineteenth century embraced a concept of performance--as contrasted to presentation--in which the musician provided "linear tension that went beyond what could be notated . . . and freely manipulated every part of every phrase . . . to achieve a performance that was itself inherent to the process of communication" (Ledbetter 1977:149-50).Issue title "Slavica." Note: E-companion at www.oraltradition.org at time of printing

The development and testing of a hierarchical measure of project OHS performance

Purpose - This paper seeks to examine a hierarchical measurement model for occupational health and safety (OHS) performance developed for use in the Australian construction industry and tested over the life of one case study construction project. The model was intended to provide a more sensitive and informative measure of project OHS performance than traditional injury frequency rates. Design/methodology/approach - Two measurement tools were tested. The tools, a monthly weighted safety index and a quarterly safety climate survey, were used to measure OHS performance and performance data are presented. Findings - The data suggest convergent validity, indicated by consistent results between the two measures. Results also indicated that a combination of measurement techniques provides more comprehensive data pertaining to project OHS performance and enables the diagnosis of OHS issues that would be undetected with reliance exclusively on traditional measures, such as lost time injury frequency rates. Research limitations/implications - The implications for future research lie in the demonstrated need to carefully evaluate the validity of the safety index and safety climate survey in future construction projects, and in the broader construction context. The results were limited to an evaluation of the measurement model in a single case study construction project and future testing is needed to determine the generalisability of the model. Practical implications - The implications for practice are that multiple measures of OHS performance, including leading indicators and surveys of workers' attitudes and perceptions of project OHS, provide a more useful basis for the development of targeted OHS improvement strategies

The role of transnational networking for higher education academics

Amidst rapid socio-economic change, higher education (HE) academics across the world face major challenges to its organisation, finance and management. This paper discusses the role of transnational networking in higher education. Data from 40 interviews with geographically distributed academics engaged in learning and teaching transnational networks (TNNs) were analysed. The findings show that in an increasingly globalised higher education system, transnational networking goes beyond conference attendance to entail multiple combinations of offline and online activities. We do not think that current concepts of communities of practice or networks of practice accurately describe these phenomena. Instead, we suggest that these activities entail different and varying levels of tangibility, more accurately defined by us as TNNs. Moreover, we argue that the term ‘network’ in this context facilitates the individualistic pursuit of a career increasingly essential in a pressurised higher education environment

Thanks, but no thanks: women's avoidance of help-seeking in the context of a dependency-related stereotype

The stereotype that women are dependent on men is a commonly verbalized, potentially damaging aspect of benevolent sexism. We investigated how women may use behavioral disconfirmation of the personal applicability of the stereotype to negotiate such sexism. In an experiment (N = 86), we manipulated female college students’ awareness that women may be stereotyped by men as dependent. We then placed participants in a situation where they needed help. Women made aware of the dependency stereotype (compared to controls who were not) were less willing to seek help. They also displayed a stronger negative correlation between help-seeking and post help-seeking affect - such that the more help they sought, the worse they felt. We discuss the relevance of these findings for research concerning women’s help-seeking and their management of sexist stereotyping in everyday interaction. We also consider the implications of our results for those working in domains such as healthcare, teaching and counseling, where interaction with individuals in need and requiring help is common

Interstitial water iodine enrichments in sediments from the eastern Pacific

The vertical distribution of iodine has been examined in interstitial waters of sediment cores from the Peru Basin, Bauer Basin, Guatemala Basin and the East Pacific Rise and the sediments have been analyzed for iodine and organic carbon. Interstitial water profiles show a strong enrichment of iodine at the sediment surface relative to overlying sea water. This enrichment is much greater than would have been expected had all the iodine originated solely from the breakdown of newly sedimented plankton. This implies recycling of iodine in the region of the water-sediment interface with most of the upward diffusing iodine being rescavenged and a small fraction escaping to the deep sea. A flux equivalent to 1–5% of the diffusive flux from interstitial waters can account for an excess iodine anomaly previously described for deep Pacific waters

Developing Models for Multi-Talker Listening Tasks using the EPIC Architecture: Wrong Turns and Lessons Learned

This report describes the development of a series of computational cognitive architecture models for the multi-channel listening task studied in the fields of audition and human performance. The models can account for the phenomena in which humans can respond to a designated spoken message in the context of multiple simultaneous speech messages from multiple speakers - the so-called "cocktail party effect." They are the first models of a new class that combine psychoacoustic perceptual mechanisms with production-system cognitive processing to account for the end-to-end performance in an important empirical literature.Office of Naval Research, Cognitive Science Program, under grant numbers N00014-10-1-0152 and N00014-13-1-0358, and the U. S. Air Force 711 HW Chief Scientist Seedling programhttp://deepblue.lib.umich.edu/bitstream/2027.42/108165/1/Kieras_Wakefield_TR_EPIC_17_July_2014.pdf-1Description of Kieras_Wakefield_TR_EPIC_17_July_2014.pdf : Technical report conten