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“Home of Younger Skin” (HOYS) program: Defining the change in apparent skin age after facial treatment with botulinum toxin and dermal fillers
Goodman GJ, Roberts S
Clinical, Cosmetic and Investigational Dermatology , 2012, DOI: http://dx.doi.org/10.2147/CCID.S34705
Abstract: me of Younger Skin” (HOYS) program: Defining the change in apparent skin age after facial treatment with botulinum toxin and dermal fillers Case report (1664) Total Article Views Authors: Goodman GJ, Roberts S Published Date August 2012 Volume 2012:5 Pages 93 - 99 DOI: http://dx.doi.org/10.2147/CCID.S34705 Received: 06 June 2012 Accepted: 04 July 2012 Published: 10 August 2012 Greg J Goodman, Stefania Roberts South Yarra, Melbourne, Victoria, Australia Background: Objective and subjective scales estimating improvement in both clinical studies and clinical practice are becoming more mainstream. However, the use of a system to analyze improvement in aging with a multiplicity of treatments would be useful. The purpose of this study was to use a recently developed educative and patient self-assessment program (“Home of Younger Skin”, HOYS) for assessment of the effect of facial treatment with neurotoxins and filling agents in terms of decreasing apparent age. Methods: Four patients underwent facial treatments with neurotoxins and dermal fillers by an experienced blinded physician and were assessed twice utilizing an age analysis program (HOYS), once before and then 6 weeks after completion of treatment. Results: The four patients showed an average reduction in apparent facial age of 7.5 years. The individual “regions” differed in their reductions. The upper face showed a decline of 13.5 years, the periorbital region 9.25 years, the mid face 4.5 years, and the lower face 12.25 years. Conclusion: Use of this previously validated self-assessment program may prove to be a useful measure of patient-reported improvement with treatment.
Academics in Academia: the Forgotten Resource in the Rush to New Technologies
Tim S Roberts
Educational Technology & Society , 2002,
Abstract: Suffice to say that I'm leaving in large part because it's not much fun any more, and the directions of the university are not mine. I'm not the first, and I won't be the last.(Farewell Email from N.M., April 2000) The rush to the use of advanced learning technologies has left many academics dazed and confused. The above excerpt, a direct quotation from a well-respected and admired academic, in many ways prompted the writing of this paper. Why isn t it much fun any more? What are these new directions currently being explored by many universities, and why are they not viewed favorably by many staff? And how is it possible for universities to explore these new directions, and yet still retain an environment that the majority of academics find professionally rewarding and enjoyable?
“Home of Younger Skin” (HOYS) program: Defining the change in apparent skin age after facial treatment with botulinum toxin and dermal fillers
Goodman GJ,Roberts S
Clinical, Cosmetic and Investigational Dermatology , 2012,
Abstract: Greg J Goodman, Stefania RobertsSouth Yarra, Melbourne, Victoria, AustraliaBackground: Objective and subjective scales estimating improvement in both clinical studies and clinical practice are becoming more mainstream. However, the use of a system to analyze improvement in aging with a multiplicity of treatments would be useful. The purpose of this study was to use a recently developed educative and patient self-assessment program (“Home of Younger Skin”, HOYS) for assessment of the effect of facial treatment with neurotoxins and filling agents in terms of decreasing apparent age.Methods: Four patients underwent facial treatments with neurotoxins and dermal fillers by an experienced blinded physician and were assessed twice utilizing an age analysis program (HOYS), once before and then 6 weeks after completion of treatment.Results: The four patients showed an average reduction in apparent facial age of 7.5 years. The individual “regions” differed in their reductions. The upper face showed a decline of 13.5 years, the periorbital region 9.25 years, the mid face 4.5 years, and the lower face 12.25 years.Conclusion: Use of this previously validated self-assessment program may prove to be a useful measure of patient-reported improvement with treatment.Keywords: HOYS, rejuvenation, botulinum toxin, fillers, laser, aging
Chord distribution functions of three-dimensional random media: Approximate first-passage times of Gaussian processes
Anthony Roberts,S. Torquato
Physics , 1999, DOI: 10.1103/PhysRevE.59.4953
Abstract: The main result of this paper is a semi-analytic approximation for the chord distribution functions of three-dimensional models of microstructure derived from Gaussian random fields. In the simplest case the chord functions are equivalent to a standard first-passage time problem, i.e., the probability density governing the time taken by a Gaussian random process to first exceed a threshold. We obtain an approximation based on the assumption that successive chords are independent. The result is a generalization of the independent interval approximation recently used to determine the exponent of persistence time decay in coarsening. The approximation is easily extended to more general models based on the intersection and union sets of models generated from the iso-surfaces of random fields. The chord distribution functions play an important role in the characterization of random composite and porous materials. Our results are compared with experimental data obtained from a three-dimensional image of a porous Fontainebleau sandstone and a two-dimensional image of a tungsten-silver composite alloy.
Pulsar Searches of EGRET Sources
Mallory S. E. Roberts
Physics , 2002,
Abstract: The majority of Galactic high-energy gamma-ray sources continue to elude identification. Currently, we have a handful of firm pulsar identifications, one of which is radio quiet, and a few marginal detections, including one millisecond pulsar. Recently, both blind searches of EGRET error boxes and targeted searches of X-ray counterpart candidates have had some success in finding new pulsars. I review these results, and discuss our current program of searching mid-Galactic latitude EGRET error boxes using the Parkes multi-beam system.
Surrounded by Spiders! New Black Widows and Redbacks in the Galactic Field
Mallory S. E. Roberts
Physics , 2012, DOI: 10.1017/S174392131202337X
Abstract: Over the last few years, the number of known eclipsing radio millisecond pulsar systems in the Galactic field has dramatically increased, with many being associated with Fermi gamma-ray sources. All are in tight binaries (orbital period < 24 hr) with many being classical "black widows" which have very low mass companions (companion mass Mc << 0.1 Msol) but some are "redbacks" with low mass (Mc ~ 0.2 - 0.4Msol) companions which are probably non-degenerate. These latter are systems where the mass transfer process may have only temporarily halted, and so are transitional systems between low mass X-ray binaries and ordinary binary millisecond pulsars. Here we review the new discoveries and their multi-wavelength properties, and briefly discuss models of shock emission, mass determinations, and evolutionary scenarios.
Temporal variations in near surface soil moisture at two contrasting sites in the Wye catchment and their control on storm streamflow generation
G. Roberts,S. B. Crane
Hydrology and Earth System Sciences (HESS) & Discussions (HESSD) , 1997,
Abstract: Near surface soil moisture measurements were recorded at hourly intervals at two contrasting sites within the Cyff sub-catchment using a prototype capacitance probe system. In a mire area within a valley bottom, over the twelve month recording period, very little change in moisture content occurred. At the other site, a well drained area on a steeply sloping hillside, major variations occurred with significant soil moisture deficits being generated during a particularly dry summer. Soil moisture on the slope responded rapidly to rainfall inputs during wet periods, with little response during particularly dry periods. A number of rainfall events was analysed to determine whether changes in soil moisture could be used to characterise storm hydrographs for the Cyff and the Gwy, two sub-catchments being composed of differing percentages of mire area and steep slopes. It was found that percentage runoff for the Cyff was correlated with antecedent soil moisture on the slope, though the agreements for peak flow and lag time were poorer. For the Gwy, poor agreements were obtained for all three hydrograph characteristics. A simple formulation, based on storm rainfall and antecedent soil moisture deficits in the slope and mire areas, gave good agreement with storm streamflow volumes.
The effects of clear-felling established forestry on stream-flow losses from the Hore sub-catchment
G. Roberts,S. B. Crane
Hydrology and Earth System Sciences (HESS) & Discussions (HESSD) , 1997,
Abstract: The effects on streamflow of clear-felling a substantial part of the established forestry within the Hore sub-catchment at Plynlimon were estimated by a regression comparison of pre-and post-felling rainfall/runoff relationships and by a model based on evapotranspiration estimates from plot studies of established forestry and heather moorland. Increases in streamflow were predicted using both methods, with those using the regression method being substantially larger than those using the model. The largest increases using the regression method occurred about 5 years after the end of felling, and amounted to 10.5% of the measured annual flow. On a seasonal basis, the largest increases using the regression method occurred during the latter half of the year, whilst the model predicted the largest increases during the summer months. These patterns are explained in terms of forest transpiration and canopy interception.
Solution of the quantum finite square well problem using the Lambert W function
Ken Roberts,S. R. Valluri
Physics , 2014,
Abstract: We present a solution of the quantum mechanics problem of the allowable energy levels of a bound particle in a one-dimensional finite square well. The method is a geometric-analytic technique utilizing the conformal mapping $w \to z = w e^w$ between two complex domains. The solution of the finite square well problem can be seen to be described by the images of simple geometric shapes, lines and circles, under this map and its inverse image. The technique can also be described using the Lambert W function. One can work in either of the complex domains, thereby obtaining additional insight into the finite square well problem and its bound energy states. There are many opportunities to follow up, and we present the method in a pedagogical manner to stimulate further research in this and related avenues.
The Lambert W Function, Laguerre Polynomials, and the Zeros of the QCD Partition Function
Ken Roberts,S. R. Valluri
Physics , 2013,
Abstract: We study solutions of a transcendental equation for the complex chemical potential at which a random-matrix QCD model can undergo a phase transition at zero mass. An explicit solution is obtained in terms of the Lambert W function. We also provide a closed form expression for a QCD random matrix model partition function, as a sum of Laguerre polynomials, for complex chemical potential and non-zero mass.
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