A design methodology for collapsible rib-tensioned surface (CRTS) reflectors is presented. Offset configurations are explicitly addressed. For a reflector with aperture of 10 m diameter and focal length of 7.8 m, a root-mean-square surface accuracy of about 2 mm is achievable; this result scales linearly with the diameter. The design of a 1.5 m diameter prototype is presented, and the accuracy ...

BACKGROUND Vaccination with the hepatitis B surface antigen (HBsAg) induces protective levels of antibody (anti-HBs = 10 IU/L) in majority of vaccinees. It has been shown that the levels of anti-HBs antibody do wane after vaccination. The aim of this study was to evaluate the persistence of anti-HBs antibodies in healthy Iranian children at 10 years after primary vaccination and the response to...

Stacking procedures with the objective of improvement of signal to noise ratio were in use before the introduction of Common reflection point stacking introduced by Mayne in 1962. But, these techniques were problematic, at times, because they used reflections from a portion of reflectors that were too large. Hence, stacking tends to obscure the very detail of reflector which is being sought. So...

A report on the challenges confronting the Fermilab Linac and Booster accelerators is presented. Plans to face those challenges are discussed. Historically, the Linac/Booster system has served only as an injector for the relatively low repetition rate Main Ring synchrotron. With construction of an 8 GeV target station for the 5 Hz MiniBooNE neutrino beam and requirements for rapid multi-batch i...

Models applied on real time response tasks, like click-through rate (CTR) prediction model, require high accuracy and rigorous response time. Therefore, top-performing deep models of high depth and complexity are not well suited for these applications with the limitations on the inference time. In order to get neural networks of better performance given the time limitations, we propose a univer...

BACKGROUND Current consensus does not support the use of a universal booster of hepatitis B virus (HBV) vaccine because there is an anamnestic response in almost all children 15 years after universal infant HBV vaccination. We aimed to provide a booster strategy among adolescents as a result of their changes in lifestyle and sexual activity. METHODS This study comprised a series of cross-sect...

To the Editor—Richmond et al. [1] reported that the immune response to meningococcal polysaccharide vaccine (MPV) for serogroup C is suppressed in adults who have been previously immunized with the vaccine. The immune response to MPV for serogroup C has been shown to be suppressed in children !2 years old who had received a primary series of this vaccine [2, 3]. However, the vaccine is not lice...

In this note we begin the development of two types of Impulse Radiating Antenna (IRA). o These two designs include a 23 cm diameter reflector IR4, with an F/D of0.38, and a solid dielectric-lens IIU4, or dielectric-immersed lens IIU. This latter design is a Transverse Electromagnetic (TEM) horn immersed in a dielectric, with a prolate spheroidal lens interface to air. The reflector IR4 consists...

With the deployment of advanced multicast routing protocols and transport protocols for real-time data, multicast services on the Internet experience renaissance. Together with the global improvements in the underlying network infrastructure, this opens possibilities for a wide range of exciting multimedia applications. However, many Internet hosts are not connected to MBone, the Internet multi...

long-term protection against hepatitis b virus (hbv) is dependent on persistence of anti-hbs antibodies and/or strong immunological memory. in this study we evaluated the persistence of anti-hbs antibodies in healthy iranian children 5 years after primary vaccination and the response to a booster dose using recombinant hepatitis b vaccine. totally, 81 children who had received primary course of...