Closed loop ranging system Patent

Closed loop radio communication ranging system to determine distance between moving airborne vehicle and fixed ground statio

TRISCAN: A method of precision antenna positioning

The triangle (antenna) scan (TRISCAN) is a method of improving the alignment between the boresight of the Deep Space Network antennas and a particular target, spacecraft, or radio source (star). For stars, the method works in conjunction with the noise adding radiometer and the antenna pointing system to form estimates of the alignment offset coordinates. This information is then used to position the antenna for improved target alignment. A comparison with CONSCAN is included since a CONSCAN study led to TRISCAN development

A phase III, multi-centre, double-masked randomised controlled trial of adjunctive intraocular and peri-ocular steroid (triamcinolone acetonide) versus standard treatment in eyes undergoing vitreoretinal surgery for open globe trauma (ASCOT): statistical analysis plan.

BACKGROUND: Open globe ocular trauma complicated by intraocular scarring (proliferative vitreoretinopathy) is a relatively rare, blinding, but potentially treatable condition for which, at present, surgery is often unsatisfactory and visual results frequently poor. To date, no pharmacological adjuncts to surgery have been proven to be effective. The aim of the Adjunctive Steroid Combination in Ocular Trauma (ASCOT) randomised controlled trial is to determine whether adjunctive steroid (triamcinolone acetonide), given at the time of surgery, can improve the outcome of vitreoretinal surgery in patients with open globe ocular trauma. This article presents the statistical analysis plan for the main publication as approved and signed off by the Trial Steering Committee prior to the first data extraction for the Data Monitoring Committee meeting report. METHODS/DESIGN: ASCOT is a pragmatic, multi-centre, parallel-group, double-masked randomised controlled trial. The aim of the study is to recruit from 20-25 centres in the United Kingdom and randomise 300 eyes (from 300 patients) into two treatment arms. Both groups will receive standard surgical treatment and care; the intervention arm will additionally receive a pre-operative steroid combination (triamcinolone acetonide) into the vitreous cavity consisting of 4 mg/0.1 ml and 40 mg/1 ml sub-Tenon's. Participants will be followed for 6 months post-surgery. The primary outcome is the proportion of patients achieving a clinically meaning improvement in visual acuity in the study eye at 6 months after initial surgery, defined as a 10 letter score improvement in the ETDRS (the standard scale to test visual acuity). TRIAL REGISTRATION: ISRCTN30012492 . Registered on 5 September 2014. EudraCT2014-002193-37 . Registered on 5 September 2014

Unified S-band receiver-exciter subsystem

Functional capabilities and physical arrangement of receiver exciter subsystem in unified S band Apollo communications and tracking ground station syste

Prospects for Spin Physics at RHIC

Colliding beams of 70% polarized protons at up to $\sqrt{s}$=500 GeV, with high luminosity, L=2$\times10^{{\rm 32}}$ cm$^{-2}$sec$^{-1}$, will represent a new and unique laboratory for studying the proton. RHIC-Spin will be the first polarized-proton collider and will be capable of copious production of jets, directly produced photons, and $W$ and $Z$ bosons. Features will include direct and precise measurements of the polarization of the gluons and of $\bar{u}$, $\bar{d}$, $u$, and $d$ quarks in a polarized proton. Parity violation searches for physics beyond the standard model will be competitive with unpolarized searches at the Fermilab Tevatron. Transverse spin will explore transversity for the first time, as well as quark-gluon correlations in the proton. Spin dependence of the total cross section and in the Coulomb nuclear interference region will be measured at collider energies for the first time. These qualitatively new measurements can be expected to deepen our understanding of the structure of matter and of the strong interaction.Comment: 51 pages, 22 figures. Scheduled to appear in the Annual Review of Nuclear and Particle Science Vol. 50, to be published in December 2000 by Annual Reviews, http://AnnualReviews.or

INTRODUCTION: A New Africa’s Media Image?

Africa’s Media Image in the 21st Century is the first book in over twenty years to examine the international media’s coverage of sub-Saharan Africa. It brings together leading researchers and prominent journalists to explore representation of the continent, and the production of that image, especially by international news media. The book highlights factors that have transformed the global media system, changing whose perspectives are told and the forms of media that empower new voices. This introductory chapter by the book editors assesses Africa’s changing media image, examines the new image-makers, and reviews the geopolitics impacting upon that image

Adjusting crop acreages for war production to the soil resources of Iowa

To some people soil conservation is a peacetime luxury; to others it is a first essential of land use. Some say, We are at war now, what does soil matter? Plow it up. Others say, For many years we have been learning conservation; we must not now throwaway our gains. Both attitudes are right if we distinguish between soils which are subject to serious erosion and those which are not, but they are wrong when applied to all soils without regard to their differences. Actually, we face the necessity of exploiting our soils to the point where we will obtain the most food and raw materials over the next 3 to 5 years. We face a serious food shortage in terms of\u27 the needs of our armed forces, our civilian population, our allies and the hungry masses which will soon be freed from tyranny. To meet these needs we should produce the maximum amount of feeds and food products required. We also need to adjust our diets to consume more of those foods which yield the most nourishment per acre