Analytical aerodynamic model of a high alpha research vehicle wind-tunnel model

A 6 DOF analytical aerodynamic model of a high alpha research vehicle is derived. The derivation is based on wind-tunnel model data valid in the altitude-Mach flight envelope centered at 15,000 ft altitude and 0.6 Mach number with Mach range between 0.3 and 0.9. The analytical models of the aerodynamics coefficients are nonlinear functions of alpha with all control variable and other states fixed. Interpolation is required between the parameterized nonlinear functions. The lift and pitching moment coefficients have unsteady flow parts due to the time range of change of angle-of-attack (alpha dot). The analytical models are plotted and compared with their corresponding wind-tunnel data. Piloted simulated maneuvers of the wind-tunnel model are used to evaluate the analytical model. The maneuvers considered are pitch-ups, 360 degree loaded and unloaded rolls, turn reversals, split S's, and level turns. The evaluation finds that (1) the analytical model is a good representation at Mach 0.6, (2) the longitudinal part is good for the Mach range 0.3 to 0.9, and (3) the lateral part is good for Mach numbers between 0.6 and 0.9. The computer simulations show that the storage requirement of the analytical model is about one tenth that of the wind-tunnel model and it runs twice as fast

Automatically Pausing Caller Video When the Caller’s Face is Out-of-frame

Many video communication applications offer a picture-in-picture mode that shows the caller’s video feed that usually includes the caller’s face in addition to that of others that participate in the call. The impulse to check one’s own image as provided in the user interface can distract callers from focusing on the other participants. Further, if the caller moves, the camera may capture and provide a video feed that includes unexpected content, e.g., the room background. This disclosure describes the use of face detection at the caller end of a video call that ensures that the caller’s camera feed includes a face and automatically switches to a static picture being displayed to the call recipient if the face is not detected. At the caller end, the caller\u27s video feed is not displayed if the face is present. In this manner, the described techniques simultaneously safeguard against inadvertent display of other content while removing the distraction of one\u27s own face from the user

Who Are The Christian Churches And What Do We Believe?

https://digitalcommons.acu.edu/crs_books/1488/thumbnail.jp

The Ferns of Burma

Author Institution: Judson College, Rangoon, Burma, and The Ohio State University, Columbus 10, Ohi

A Phylogenetic Study of the Ferns of Burma

Author Institution: Judson College, Rangoon, Burma, and The Ohio State University, Columbs, Ohi

Refractory lympho-epithelial carcinoma of the nasopharynx: a case report illustrating a protracted clinical course

Nasopharyngeal carcinoma is an uncommon cancer in North America. Its clinical course is typified by locally advanced disease at diagnosis and has a high propensity for both regional and distant spread. It is, therefore, typically treated with a combination of radiation and chemotherapy. This report describes our 10-year clinical and radiological findings in a 48-year-old Vietnamese male patient with locally-advanced T4N1M0 lympho-epithelial carcinoma of the nasopharynx. Despite a long remission period after his initial course of aggressive chemoradiation, his tumor recurred locally after 4 years. Thereafter, throughout a period of over 10 years, he has been treated with multiple courses of re-irradiation and three different trials of chemotherapy. He was ultimately provided with over 30 months of progression-free tumor control with the epidermal growth factor receptor (EGFR)-inhibitor cetuximab. This case illustrates the commonly protracted course of this disease and its responsiveness to multiple treatment modalities

Noyce Science Teacher Master of Arts with emphasis in Science Teaching Program: Meeting Challenges of 21st Century Classrooms. UNL Noyce Track I, Phase I, Final Report.

To meet the state’s and the nation’s need for more highly qualified science teachers, the 14-month Master of Arts with emphasis in science teaching (MAst) program was established in the College of Education’s Department of Teaching, Learning, and Teacher Education at the University of Nebraska-Lincoln, along with a Robert Noyce, Track I, Phase I grant from the National Science Foundation, awarded in 2010. This report presents a summary of the accomplishments of this Noyce grant, in which 60 post-baccalaureate science majors and professionals were provided with Noyce stipends to become science teachers. The MAst program is now in its sixth year, producing an average of 10 new science teachers per year. The project team, led by Dr. Elizabeth Lewis, was also awarded a second Noyce grant in 2015 to support 30 more individuals to become science teachers along with funding to continue to research the practices of beginning science teachers. The MAst program engages science professionals in a research-informed program of study that supports them in developing the knowledge, skills, and dispositions necessary to meet the challenges of the modern American secondary science classroom

Which azithromycin regimen should be used for treating Mycoplasma genitalium? A meta-analysis

BackgroundThere is increasing evidence that azithromycin 1 g is driving the emergence of macrolide resistance in Mycoplasma genitalium worldwide. We undertook a meta-analysis of M. genitalium treatment studies using azithromycin 1 g single dose and azithromycin 500 mg on day 1 then 250 mg daily for 4 days (5-day regimen) to determine rates of treatment failure and resistance in both regimens.MethodsThe online databases PubMed and Medline were searched using terms “Mycoplasma genitalium”, “macrolide” or “azithromycin” and “resistance” up to April 2016. Studies were eligible if they: used azithromycin 1 g or 5 days, assessed patients for macrolide resistant genetic mutations prior to treatment and patients who failed were again resistance genotyped. Random effects meta-analysis was used to estimate failure and resistance rates.ResultsEight studies were identified totalling 435 patients of whom 82 (18.9%) had received the 5-day regimen. The random effects pooled rate of treatment failure and development of macrolide antimicrobial resistance mutations with azithromycin 1 g was 13.9% (95% CI 7.7% to 20.1%) and 12.0% (7.1% to 16.9%), respectively. Of individuals treated with the 5-day regimen, with no prior doxycycline treatment, fewer (3.7%; 95% CI 0.8% to 10.3%, p=0.012) failed treatment, all of whom developed resistance (p=0.027).ConclusionAzithromycin 1 g is associated with high rates of treatment failure and development of macrolide resistance in M. genitalium infection with no pre-existing macrolide mutations. There is moderate but conflicting evidence that the 5-day regimen may be more effective and less likely to cause resistance.</jats:sec

The Open Cluster Chemical Analysis and Mapping Survey: Local Galactic Metallicity Gradient with APOGEE using SDSS DR10

The Open Cluster Chemical Analysis and Mapping (OCCAM) Survey aims to produce a comprehensive, uniform, infrared-based dataset for hundreds of open clusters, and constrain key Galactic dynamical and chemical parameters from this sample. This first contribution from the OCCAM survey presents analysis of 141 members stars in 28 open clusters with high-resolution metallicities derived from a large uniform sample collected as part of the SDSS-III/Apache Point Observatory Galactic Evolution Experiment (APOGEE). This sample includes the first high-resolution metallicity measurements for 22 open clusters. With this largest ever uniformly observed sample of open cluster stars we investigate the Galactic disk gradients of both [M/H] and [alpha/M]. We find basically no gradient across this range in [alpha/M], but [M/H] does show a gradient for R_{GC} < 10 kpc and a significant flattening beyond R_{GC} = 10 kpc. In particular, whereas fitting a single linear trend yields an [M/H] gradient of -0.09 +/- 0.03$ dex/kpc --- similar to previously measure gradients inside 13 kpc --- by independently fitting inside and outside 10 kpc separately we find a significantly steeper gradient near the Sun (7.9 <= R_{GC} <= 10) than previously found (-0.20 +/- 0.08 dex/kpc) and a nearly flat trend beyond 10 kpc (-0.02 +/- 0.09 dex/kpc).Comment: 6 pages, 4 figures, ApJ letters, in pres