Co-Phased 360-Degree Profilometry of Discontinuous Solids with 2-Projectors and 1-Camera

Here we describe a co-phased 360-degree fringe-projection profilometer which uses 2-projectors and 1-camera and can digitize discontinuous solids with diffuse light surface. This is called co-phased because the two phase demodulated analytic-signals from each projection are added coherently. This 360-degree co-phased profilometer solves the self-generated shadows cast by the object discontinuities due to the angle between the camera and the single white-light fringe projector in standard profilometry.Comment: 4 pages, 6 Figure

Staring and Perceptions Towards Persons with Facial Disfigurement

A convenience sample of college students (N=33) enrolled in courses in the College of Health and Human Performance at East Carolina University was used to determine if there were statistically significant relationships between staring and perceptions of people with facial disfigurement. Staring was measured by fixation time in seconds with an Applied Sciences Laboratories (ASL, Watham, MA) 6000 SU eye movement system with Eyehead Integration Software and GazeTracker to see if participants spent more time fixating on people with facial disfigurement than people without facial disfigurement when presented with four photos on a computer monitor. Perceptions of people were measured by the Facial Disfigurement Photograph Scale, a Likert-type scale which measures perceptions of honesty, employability, intelligence, trustworthiness, attractiveness, optimism, effectiveness, popularity, and capability based on a person's appearance in a photo. Results indicated that people with facial disfigurement (M=3.2, SD=1.7) were stared at longer than people without facial disfigurement (M=2.7, SD=1.3); t=-2.25, p<.05. However, only the perception of capability of people with facial disfigurement was significantly related to staring (p<.05).  M.S

III-V photonic crystal wire cavity laser on silicon wafer

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Field Localization and Enhancement of Phase Locked Second and Third Harmonic Generation in Absorbing Semiconductor Cavities

We predict and experimentally observe the enhancement by three orders of magnitude of phase mismatched second and third harmonic generation in a GaAs cavity at 650nm and 433nm, respectively, well above the absorption edge. Phase locking between the pump and the harmonics changes the effective dispersion of the medium and inhibits absorption. Despite hostile conditions the harmonics become localized inside the cavity leading to relatively large conversion efficiencies. Field localization plays a pivotal role and ushers in a new class of semiconductor-based devices in the visible and UV ranges

Laser sources on a heterogeneous III-V/silicon platform

The heterogeneous integration of III-V semiconductor lasers on a silicon waveguide platform using DVS-BCB adhesive bonding is reviewed. Both mW-level lasers and ultra-compact laser sources are discussed

Association between muscle dysmorphia psychopathology and binge eating in a large at-risk cohort of men and women.

BACKGROUND Current research on muscle dysmorphia (MD) has focused on restrained eating behaviors and has adopted a primarily male perspective. Despite initial evidence, the role of possible binge eating associated with MD has only been scarcely investigated. To extend the transdiagnostic and cross-gender approaches and address the dearth in research related to MD, this study investigated the association between MD psychopathology and binge eating in men and women. METHODS This study investigated the association between MD psychopathology and binge eating in both men and women. Participants were a sample of 5905 men (n = 422) and women (n = 5483) social media users aged 18-72 years. They completed an online survey that included self-report measures assessing demographics, binge eating, MD psychopathology, and drive for thinness and leanness. Binge eating was assessed using the diagnostic questions of the validated German version of the Eating Disorder Examination-Questionnaire. The Muscle Dysmorphic Disorder Inventory (MDDI) was used to assess MD psychopathology. A total score of > 39 was set as a cutoff to define an "MD at-risk" state for both men and women. Hierarchical logistic regression analysis was used to analyze the association between MD psychopathology and binge eating. RESULTS MD psychopathology was significantly positively associated with binge eating in both men and women. Among the three MDDI subscales, only appearance intolerance was significantly associated with MD, and drive for size and functional impairment were not associated. MD at-risk status yielded a predicted probability of binge eating of 25% for men and 66.9% for women. The increased probability of binge eating associated with MD at-risk status was mainly accounted for by appearance intolerance in men and drive for thinness in women. CONCLUSION MD psychopathology is positively associated with binge eating in both men and women. Binge eating episodes should therefore form part of the clinical assessment of MD