Physicians should revise their understanding of upper airway sleep-disordered breathing so that they notice women with certain craniofacial features, a low body mass index, a small neck circumference, and a respiratory disturbance index of less than 5. These revisions may enable more rapid diagnosis and treatment of women with sleep-disordered breathing.

For flexible displays, recovery and relaxation of acrylic pressure-sensitive adhesives (PSA) must be enhanced; however, only a few studies have focused on their optimization. High cross-linking density of the PSA leads to improved recovery but deteriorates the stress relaxation; thus, it is difficult to perform optimization by simply controlling the cross-linking density. Herein, it was determined that a UV-patterned PSA with both high and low cross-linking densities in a single layer enables the optimization of both recovery and relaxation. By introducing the UV-patterned PSA, the elasticity and recovery largely deteriorated but the stress relaxation was significantly improved, compared to that of the nonpatterned PSA, and this effect was enhanced with increases in the applied strain. Thereby, the recovery and relaxation were well-optimized with both values above 71% only at 300% strain. The recovery and relaxation of PSA had, respectively, a positive and negative correlation with the storage modulus.

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The screen door effect (SDE) is the great challenge in the development of VR display, which obstructs immersion in the virtual reality. In this paper, we propose the quantitative investigation method for SDE, and demonstrate how the SDE can be systematically mitigated without degrading image quality. Author KeywordsVirtual Reality; Screen Door Effect; OLED; Low-pass filter Objective and BackgroundVirtual Reality (VR) devices have attracted huge interest from industries in anticipation of numerous applications for entertainment, education, medical uses and so on [1]. As VR hardware becomes more affordable, it has come into wide use. By wearing a VR headset, we are immediately surrounded by realistic scenery projected by head-mounted display. Many technologies are required for making the immersive experience in VR headsets; however, display technology is critical because it is directly related to our vision. Figure 2. Microscopic images (X50) is shown (a) without and (b) with the SDE reduction film.

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