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Search Results: 1 - 10 of 2922 matches for " Steve Wilburn "
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Hawking radiation, Unruh radiation and the equivalence principle
Douglas Singleton,Steve Wilburn
Physics , 2011, DOI: 10.1103/PhysRevLett.107.081102
Abstract: We compare the response function of an Unruh-DeWitt detector for different space-times and different vacua and show that there is a {\it detailed} violation of the equivalence principle. In particular comparing the response of an accelerating detector to a detector at rest in a Schwarzschild space-time we find that both detectors register thermal radiation, but for a given, equivalent acceleration the fixed detector in the Schwarzschild space-time measures a higher temperature. This allows one to locally distinguish the two cases. As one approaches the horizon the two temperatures have the same limit so that the equivalence principle is restored at the horizon.
Skepticism, Contextualism, Externalism and Modality
Ron Wilburn
Principia : an International Journal of Epistemology , 2006,
Abstract: In this paper, I argue for the following claims. Contextualist strategies to tame or localize epistemic skepticism are hopeless if contextualist factors are construed internalistically. However, because efforts to contextualize externalism via subjunctive conditional analysis court circularity, it is only on an internalistic interpretation that contextualist strategies can even be motivated. While these claims do not give us an argument for skepticism, they do give us an argument that contextualism, as such, is not likely to provide us with an argument against skepticism.
Overview and Summary: Environmental Health: Important Choices for a Greener World
Susan Wilburn
Online Journal of Issues in Nursing , 2007,
Abstract:
Needlestick and Sharps Injury Prevention
Wilburn, S
Online Journal of Issues in Nursing , 2004,
Abstract: Every day while caring for patients, nurses are at risk to exposure to bloodborne pathogens potentially resulting in infections such as HIV or hepatitis B and C. These exposures, while preventable, are often accepted as being a part of the job. In the United States, needlestick injuries have begun to decrease from an estimated one million exposures per year in 1996 to 385,000 per year in 2000. This decline has resulted from the protections afforded by the Occupational Safety and Health Administration’s (OSHA) Bloodborne Pathogens Standard. Reasons for the success in decreasing needlestick and sharps injuries may be attributed to the elimination of needle recapping and the use of safer needle devices, sharps collection boxes, gloves and personal protective gear, and universal precautions. The prevention of needlestick injuries has made slow progress over the past 20 years since the HIV epidemic drew attention to the deadly nature of health care work and to protection of health care worker health and safety. In Africa, where the AIDS virus originated and where the prevalence of the human immunodeficiency virus (HIV) among hospitalized patients is highest in the world, attention has been directed only recently at protecting health care workers. Nurses, especially those infected from a preventable exposure, have been at the forefront of advocacy for prevention. This article includes a review about the hazard of exposure to bloodborne pathogens and epidemiology of occupational infection. The author discusses how to apply standard methods of occupational health and industry hygiene using the hierarchy of controls framework to prevent exposure to blood, and discusses evidence-based prevention and efficacy of particular control measures. Legislative progress and implementation of enforceable policy to protect health care workers is outlined.
MORAL KNOWLEDGE AND MORAL FACTUALITY
RON WILBURN
Ethic@ : an International Journal for Moral Philosophy , 2008,
Abstract: For naturalistic and non-intuitionistic moral realists, moral knowledge is more problematic than ordinaryand scientific factual knowledge. For without special faculties of moral discernment, how could we everdetect moral facts and properties? Physical facts and properties may be accessible to perceptual recognition.But how could moral facts and properties ever be similarly accessible? To address this challenge, weneed a meta-ethical account that does two things. First, it must explain how the discernment of moralfacts and properties ultimately consists only of the detection of appropriate physical items. Second, itmust explain why, despite this fact, moral perception seems so very puzzling. In this paper I endeavor toprovide such an account. It is largely because of the relational nature of moral properties, and thecorresponding externalistically determined normative content of moral property terms, I argue, that ourepistemic access to moral knowledge appears mysterious. The metaphysics of moral factuality does a lotto explain the seeming elusiveness of moral knowledge, and in ways that are surprisingly mundane.
A pilot, prospective evaluation of a novel alternative for maintenance therapy of breast cancer-associated lymphedema [ISRCTN76522412]
Olivia Wilburn, Paul Wilburn, Stanley G Rockson
BMC Cancer , 2006, DOI: 10.1186/1471-2407-6-84
Abstract: A prospective, randomized, crossover study of maintenance therapy was performed in 10 patients with unilateral breast cancer-associated lymphedema of the arm. Each observation phase included self-administered treatment with the Flexitouch? or massage, 1 hour daily for 14 days, respectively, followed by crossover to the alternate treatment phase. Each treatment phase was preceded by a 1 week treatment washout, with use of garment only. The sequence of treatment was randomly assigned. The potential impact of treatment modality on quality of life was assessed with serial administration of the SF-36.Statistical analysis disclosed that the order of treatment had no outcome influence, permitting 10 comparisons within each treatment group. Post-treatment arm volume reduced significantly after the Flexitouch?, but not after self-administered massage. The patients' mean weight decreased significantly with Flexitouch? use, but not with massage. The Flexitouch? device was apparently well-tolerated and accepted by patients. Serial SF-36 administration showed no deterioration in physical or psychosocial scores compared to baseline measurements; there were no statistical differences in scores when the two treatment modalities were compared.This short-term prospective evaluation of the Flexitouch? suggests that the device may provide better maintenance edema control than self-adiminstered massage in breast cancer-associated lymphedema. The apparent ease of use and reliability of response to the device suggest that further broad-scale testing is warranted.Acquired disruption of the lymphatic circulation can lead to either regional or generalized accumulation of interstitial fluid, known as lymphedema [1]. Among the predicted 200,000 patients who develop breast cancer annually [2], conservative estimates dictate that 15–20% will ultimately develop secondary lymphedema of the upper extremity [3,4]. The cumulative incidence of lymphedema appears to increase with each year after surger
Why Can’t Canada Spend More on Mental Health?  [PDF]
Steve Lurie
Health (Health) , 2014, DOI: 10.4236/health.2014.68089
Abstract: The World Health Organization (WHO) notes that mental illness accounts for 13% of the world’s disease burden, yet most countries under invest despite the social and economic costs of mental illness. It has been suggested that this lack of investment may be a result of stigma. A number of high income countries invest 10% or more in their mental health services. Although Canada is a high income country, its mental health spending is 7.2% according to the WHO Mental Health Atlas. This article will review the factors influencing Canada and its provinces’ under investment in mental health, compare its performance with other countries and make the case on why and how this could change.
Consistency of parity-violating pion-nucleon couplings extracted from measurements in 18F and 133Cs
W. S. Wilburn,J. D. Bowman
Physics , 1998, DOI: 10.1103/PhysRevC.57.3425
Abstract: The recent measurement of the nuclear anapole moment of 133Cs has been interpreted to yield a value of the weak pion-nucleon coupling H_pi^1 which contradicts the upper limit from the 18F experiments. We argue that because of the sensitivity of the anapole moment to H_rho^0 in the odd proton nucleus 133Cs, there is a combination of weak meson-nucleon couplings which satisfies both experiments and which is (barely) in agreement with theory. In addition, the anapole moment measurement in 205Tl gives a constraint which is inconsistent with the value from 133Cs, calling into question the theory of nuclear anapole moments. We argue that measurements of directional asymmetry in n+p-->d+gamma and in the photo-disintegration of the deuteron by circularly polarized photons, combined with results from pp scattering, would determine H_pi^1 and several other weak meson-nucleon couplings in a model-independent way.
Understanding the Relationships between Environmental and Social Risk Factors and Financial Performance of Global Infrastructure Projects  [PDF]
Daniil Kiose, Steve Keen
iBusiness (IB) , 2017, DOI: 10.4236/ib.2017.94007
Abstract: This study analyses the link between environmental and social risk (ESR) factors and the risk-return profile of infrastructure bonds. We provide support for the hypothesis that credit standing of infrastructure bonds is associated with ESR factors. Considering these factors along with bond and issuer specific information we discovered that several environmental and social risk covariates are strongly related to 1) expected risk-return profile of infrastructure bonds; and 2) the balance of risk around the expectation. Thus along with traditional drivers of bond risks (e.g. time to maturity, base interest rate, etc.) we find that also CO2 emission and percentage of independent directors emerge as important predictors. This study benefits from thoroughly developed, justified and validated non-parametric regression model used to derive key insights into the research question. This work makes a methodological contribution by applying non-parametric modelling techniques to study the financial risk of infrastructure projects. Moreover, it provides bond investors as well as policy makers with the guidance on where to focus their attention.
Evidence Based Medicine, in Precision Oncology  [PDF]
M. Nezami, Steve Hager
Journal of Cancer Therapy (JCT) , 2018, DOI: 10.4236/jct.2018.99057
Abstract: The disagreements in clinical data and therapy recommendations extracted from different sources/studies are a common finding in oncology research. Knowingly “biology is less reproducible than physics and mechanic engineering”, in order to overcome the disagreements and to find common grounds, we still rely on meta-analysis and systemic reviews for the highest level of evidence. To gather systemic review data base, a bibliographic search usually is conducted in the PubMed and in Cochrane Central Register of Controlled Trials databases to address a common clinical challenge. That said, frequently due to common conflicts between articles outcomes, an opinion of a third investigator is sought. Here in this article, we propose a rationale that could explain the differences in outcomes as a result of imperfect understanding of the current research database secondary to the unique biology of the tumor, rather than statistical interpretation on findings. We believe that the differences in findings merely are based on blinded inclusion criteria, and lack of accurate companion diagnostics to correlate the magnitude of response to each therapy. The objective of this article is to discuss a strategy to overcome such discordance by providing quantitative biological measures for genomic classification and correlation of tumor response to the selected targeted therapy. We further review such analysis in a case series of Her 2 positive breast cancer and conclude that
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