6,239 research outputs found
Good night, sleep tight (remix)
Good Night, Sleep Tight is an interactive virtual reality performance created by theatre and digital arts company ZU-UK. It was previewed at Gerry’s Kitchen in July 2017. Combining VR and binaural technologies, participants are put to bed and transported to a dreamscape composed of childhood imagery and aerial cityscapes. This artistic position remixes the audience’s experience and the artistic processes of Good Night, Sleep Tight to proffer a critical engagement with the aesthetics of VR. Theories pertaining to VR and theatre are emerging but not yet fully established. The discourse between technologists and artists is key to understanding how VR is a new artistic medium requiring a language not solely redolent of gaming or theatre. The format of this article reflects ZU-UK’s contention that VR experiences are best designed as collaborations between artists and audiences who construct an imaginary world through interactive media. The seven scenes below concentrate on different aspects of the rehearsal process and the final performance from the perspectives of the ZU-UK directors, VR technologists, and participants. Interspersed throughout the article are fragments from the Good Night, Sleep Tight script and a description of the piece from the reader’s perspective, who acts as ZU-UK’s imaginary audience member
Shape Memory Alloy Nanostructures With Coupled Dynamic Thermo-Mechanical Effects
Employing the Ginzburg-Landau phase-field theory, a new coupled dynamic
thermo-mechanical 3D model has been proposed for modeling the
cubic-to-tetragonal martensitic transformations in shape memory alloy (SMA)
nanostructures. The stress-induced phase transformations and thermo-mechanical
behavior of nanostructured SMAs have been investigated. The mechanical and
thermal hysteresis phenomena, local non-uniform phase transformations and
corresponding non-uniform temperature and deformations distributions are
captured successfully using the developed model. The predicted microstructure
evolution qualitatively matches with the experimental observations. The
developed coupled dynamic model has provided a better understanding of
underlying martensitic transformation mechanisms in SMAs, as well as their
effect on the thermo-mechanical behavior of nanostructures.Comment: 8 pages, 3 figure
Once again: Instanton method vs. WKB
A recent analytic test of the instanton method performed by comparing the
exact spectrum of the Lam potential (derived from representations
of a finite dimensional matrix expressed in terms of generators) with
the results of the tight--binding and instanton approximations as well as the
standard WKB approximation is commented upon. It is pointed out that in the
case of the Lam potential as well as others the WKB--related method
of matched asymptotic expansions yields the exact instanton result as a result
of boundary conditions imposed on wave functions which are matched in domains
of overlap.Comment: 10 pages, no figures. References list revised according to JHE
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