A License to Play: Regulating Location-Based Augmented Reality Gameplay on Public Property

This novel research sits at the intersection of augmented reality gameplay and government licenses for use of public property. Governments have long used licensing schema to assure public safety and order. Augmented reality gameplay on public lands presents a new, contested use of public property. Under our proposed licensing scheme, those wishing to engage in location-based augmented reality (LoBAR) gameplay on public lands would need a license. This proposal is akin to how governments—federal, state, and municipal—have authorized permit schema for use of public property, including rock climbing, geocaching, street performing, and film photography. Our Article offers sample legislation for policymakers to license LoBAR gaming, and a sample license application is included in the Appendix

The Regulation of Facial Recognition Technology and Potential First Amendment Concerns

This thesis is designed to explore the patchwork regulatory structure that governs the useof facial recognition technology by government and private actors. With minimal federalregulation, state and local regulations are an important bulwark against the unregulated use offacial recognition technology. The author examines the few state and local regulations that doexist, analyzing statutes using a coding protocol created by the author. He then discusses anypotential First Amendment interests present in the use of facial recognition technology,ultimately concluding that facial recognition technology will likely receive some level of FirstAmendment protection under the rule of “information as speech” first stated in Sorrell v. IMSHealth. Lastly, the author evaluates how a First Amendment interest may hinder state and localattempts to regulate the use of facial recognition technology.Master of Art

Burden of Gastrointestinal Disease in the United States: 2012 Update

Gastrointestinal (GI) diseases account for substantial morbidity, mortality and cost. Statistical analyses of the most recent data are necessary to guide GI research, education and clinical practice. We estimate the burden of GI disease in the US

The James Webb Space Telescope Mission

Twenty-six years ago a small committee report, building on earlier studies, expounded a compelling and poetic vision for the future of astronomy, calling for an infrared-optimized space telescope with an aperture of at least $4m$. With the support of their governments in the US, Europe, and Canada, 20,000 people realized that vision as the $6.5m$ James Webb Space Telescope. A generation of astronomers will celebrate their accomplishments for the life of the mission, potentially as long as 20 years, and beyond. This report and the scientific discoveries that follow are extended thank-you notes to the 20,000 team members. The telescope is working perfectly, with much better image quality than expected. In this and accompanying papers, we give a brief history, describe the observatory, outline its objectives and current observing program, and discuss the inventions and people who made it possible. We cite detailed reports on the design and the measured performance on orbit.Comment: Accepted by PASP for the special issue on The James Webb Space Telescope Overview, 29 pages, 4 figure

Identification and characterization of deep nitrogen acceptors in β-Ga2O3 using defect spectroscopies

The ability to achieve highly resistive beta-phase gallium oxide (β-Ga2O3) layers and substrates is critical for β-Ga2O3 high voltage and RF devices. To date, the most common approach involves doping with iron (Fe), which generates a moderately deep acceptor-like defect state located at EC-0.8 eV in the β-Ga2O3 bandgap. Recently, there has been growing interest in alternative acceptors, such as magnesium (Mg) and nitrogen (N), due to their predicted deeper energy levels, which could avoid inadvertent charge modulation during device operation. In this work, a systematic study that makes direct correlations between the introduction of N using ion implantation and the observation of a newly observed deep level at EC-2.9 eV detected by deep-level optical spectroscopy (DLOS) is presented. The concentration of this state displayed a monotonic dependence with N concentration over a range of implant conditions, as confirmed by secondary ion mass spectrometry (SIMS). With a near 1:1 match in absolute N and EC-2.9 eV trap concentrations from SIMS and DLOS, respectively, which also matched the measured removal of free electrons from capacitance-voltage studies, this indicates that N contributes a very efficiently incorporated compensating defect. Density functional theory calculations confirm the assignment of this state to be an N (0/−1) acceptor with a configuration of N occupying the oxygen site III [NO(III)]. The near ideal efficiency for this state to compensate free electrons and its location toward the midgap region of the β-Ga2O3 bandgap demonstrates the potential of N doping as a promising approach for producing semi-insulating β-Ga2O3

EFFeCtiveness AND SAFETY OF High versus low dose swallowed TopICal STEROIDs for Maintenance Treatment of Eosinophilic Esophagitis: A Multi-Center Observational Study

BACKGROUND & AIMS Data evaluating efficacy of different doses of swallowed topical corticosteroids (STC) in the long-term management of eosinophilic esophagitis (EoE) are lacking. We assessed long-term effectiveness and safety of different STC doses for adults with EoE after achievement of histological remission. METHODS We performed a retrospective multicenter study at five EoE referral centers (US and Switzerland). We analyzed data on 82 patients with EoE in histological remission and ongoing STC treatment with therapeutic adherence of >75% (58 males; mean age at diagnosis, 37.2±14.4 years). Patients were followed for a median of 2.2 years (interquartile range [IQR], 1.0-3.8 years). We collected data from 217 follow-up endoscopy visits. The primary endpoint was time to histological relapse. RESULTS Histological relapse occurred in 67% of patients. Relapse rates were comparable in patients taking low dose (0.5mg per day, n=24) with 72 vs. 54% (ns). However, histological relapse occurred significantly earlier with low dose STC (1.0 vs. 1.8 years, p=0.030). There was no difference regarding rates of and time to stricture formation for low vs. high dose STC. Esophageal candidiasis was observed in 6% of patients (5% for low dose, 8% for high dose, ns). No dysplasia or mucosal atrophy was detected. CONCLUSION Histological relapse frequently occurs in EoE despite ongoing STC treatment regardless of STC doses. However, relapse develops later in patients on high dose STC without an increase in side-effects. Doses higher than 0.5mg/day may be considered for EoE maintenance treatment, but advantage over lower doses appears to be small