Creating effective focus cues in multi-plane 3D displays.

Focus cues are incorrect in conventional stereoscopic displays. This causes a dissociation of vergence and accommodation, which leads to visual fatigue and perceptual distortions. Multi-plane displays can minimize these problems by creating nearly correct focus cues. But to create the appearance of continuous depth in a multi-plane display, one needs to use depth-weighted blending: i.e., distribute light intensity between adjacent planes. Akeley et al. [ACM Trans. Graph. 23, 804 (2004)] and Liu and Hua [Opt. Express 18, 11562 (2009)] described rather different rules for depth-weighted blending. We examined the effectiveness of those and other rules using a model of a typical human eye and biologically plausible metrics for image quality. We find that the linear blending rule proposed by Akeley and colleagues [ACM Trans. Graph. 23, 804 (2004)] is the best solution for natural stimuli

Alien Registration- Akeley, Katherine (Presque Isle, Aroostook County)

https://digitalmaine.com/alien_docs/34213/thumbnail.jp

An Acceleration Apparatus

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Alien Registration- Akeley, Marion E. (Presque Isle, Aroostook County)

https://digitalmaine.com/alien_docs/34214/thumbnail.jp

Narrative Based Fear Appeals Manipulating Grammatical Person And Message Frame To Promote Hpv Awareness And Responsible Sexual Conduct

The utility of narrative as a persuasive mechanism has been increasingly investigated in recent years especially within the context of health behaviors. Although many studies have noted the effectiveness of narrative-based persuasive appeals, conceptual inconsistencies have made it difficult to determine what specific aspects of narrative messages lead to the most effective persuasive outcomes. In the present study, 145 female college students were randomly assigned to read one of four narrative health messages about a female freshman college students experiences with the human papillomavirus (HPV). Two elements of the narrative message structure were manipulated: the message frame (gain framed vs. loss framed), and the grammatical person of the text (first-person vs. third-person).The messages were presented via the medium of an online blog. After reading a narrative participants responded to a brief questionnaire designed to measure perceptions of threat regarding HPV contraction, perceptions of efficacy regarding HPV prevention, and intentions to get the Gardasil vaccine. Participants exposed to loss framed messages reported higher levels of perceived threat (susceptibility and severity) than participants exposed to gain framed messages although participants in the gain framed message conditions reported higher levels of perceived self-efficacy. Significant correlations were also found between levels of reported character identification and the two threat variables. No effects were found for grammatical person

A stereo display prototype with multiple focal distances

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Fluid-Structure Interaction Analyses of Amniotic Fluid with a Comprehensive Fetus Model Exposed to External Loading

A history of trauma during gestation is a risk factor for poor pregnancy outcomes. A multidisciplinary approach is vital to protect the mother's and the fetus' safety. Even though pregnancy-related trauma is uncommon, it is one of the leading causes of morbidity and mortality in pregnant women and fetuses. Hence, it is axiomatic to study the mechanism of the traumatic injuries to the fetus. The development of next-generation protective devices depends on our understanding of these mechanisms. Computational fluid-structure interaction simulations are used to study the effect of external loading on the fetus submerged in the amniotic fluid inside the uterus. A multitude of resulting variables is utilized to understand the cushioning function of the amniotic fluid on the fetus