3,667 research outputs found
Bicycle Rider Control Identification
No full text<p>This is the accompanying data and source code for the paper:</p>
<p>"Rider control identification in bicycling using lateral force perturbation tests", A.L. Schwab, P.D.L de Lange, R. Happee, and Jason K. Moore. Multibody System Dynamics, 2013.</p
Bernard Stiegler et le Capitalocène : l’appréciation d’une controverse avec Jason W. Moore
No full textInternational audienceThe purpose of this paper is to discuss some of the interpretations from Bernard Stiegler's latest book, Qu’appelle-t-on panser ? 2. La leçon de Gretha Thunberg, published in January 2020. We do not intend to summarize chapter four entitled " L’âge du Capitalocène comme accélération de l’exosommatisation ". Rather, we will try to see how the Capitalocene problem is approached with the help of numerous quotations from the book. Our text is based on a montage of excerpts from the book to which we have added intertitles and a few comments, in order to facilitate the development of a thought that is exposed over sixty-one pages. In this way, we will be able to retrace our steps to understand the difference between the Stieglerian position and that of Jason W. Moore with regard to the Anthropocene versus Capitalocene distinction. This text therefore sheds additional light on the concept of Capitalocene, which forms the focus of the report in this issue 9 of Etudes digitales.Au centre de notre propos se trouve le dernier ouvrage de Bernard Stiegler, Qu’appelle-t-on panser ? 2. La leçon de Gretha Thunberg, publié en janvier 2020. Nous n’entendons pas résumer le chapitre quatre intitulé « L’âge du Capitalocène comme accélération de l’exosommatisation ». Nous allons essayer plutôt de voir comment est abordée la problématique du Capitalocène en nous aidant de nombreuses citations du livre. Notre texte repose sur un montage d’extraits de l’ouvrage auxquels nous avons ajouté des intertitres et quelques commentaires, afin de faciliter le développement d’une pensée qui s’expose sur soixante et une pages. Ainsi, nous pourrons refaire un parcours pour comprendre la différence entre la position stieglérienne et celle de Jason W. Moore quant à la distinction Anthropocène versus Capitalocène. Ce texte apporte donc un éclairage complémentaire sur le concept de Capitalocène qui forme le centre du dossier de ce numéro 9 d’Etudes digitales
Wall Street is a way of organizing nature : an interview with Jason W. Moore
No full textMy alternative to the Cartesian binary is the world-ecological perspective. This perspective says that the great movements of modern world history – imperialism, transitions in family and gen-der relations, commodification, financial expansions and much more – are messy bundles of human- and extra-human relations. The theory of capitalism as world-ecology builds out from a simple proposition: Just as a farm is a way of organizing nature, so is a market, a financial center, a factory, an empire. The production of nature has been every bit as much about the factories as forests, stock exchanges, shopping centers, slum and suburban sprawls, as it has been about soil exhaustion and species extinction. Focusing on capitalism as world-ecology, I seek a dialectical synthesis of the accumulation of capital, the pursuit of power, and the production of nature. The capitalist world-ecology is a kind of gravitational field. At its vortex is the commodity. The com-modification of everything, capitalism‟s basic tendency, is often considered a social process; in fact it is powerfully ecological. The commodification of everything says that human nature, as labor productivity, is what really counts. Extra-human nature is literally devalued, mobilized in support of rising labor productivity. Capitalism is the gravitational field within which the vast array of “big picture” historical movements of the past five centuries unfolds. Financialization, shifts in family structure, the emergence of new racial orders, colonialism and imperialism, industrialization, social revolutions and workers‟ movements – these are all world-ecological processes and projects, all with powerful visions for re-ordering of human- and extra-human natures.</p
Absolute calibration of the Jason-1 altimeter using UK tide gauges
No full textThis article describes an "absolute" calibration of Jason-1 (J-1) altimeter sea surface height bias using a method developed for TOPEX/Poseidon (T/P) bias determination reported previously. The method makes use of U.K. tide gauges equipped with Global Positioning System (GPS) receivers to measure sea surface heights at the same time, and in the same geocentric reference frame, as Jason-1 altimetric heights recorded in the nearby ocean. The main time-dependent components of the observed altimeter-minus-gauge height-difference time series are due to the slightly different ocean tides at the gauge and in the ocean. The main harmonic coefficients of the tide differences are calculated from analysis of the copious TOPEX data set and then applied to the determination of T, P, and J-1 bias in turn. Datum connections between the tide gauge and altimetric sea surface heights are made by means of precise, local geoid differences from the EGG97 model. By these means, we have estimated Jason-1 altimeter bias determined from Geophysical Data Record (GDR) data for cycles 1-61 to be 12.9 cm, with an accuracy estimated to be approximately 3 cm on the basis of our earlier work. This J-1 bias value is in close agreement with those determined by other groups, which provides a further confirmation of the validity of our method and of its potential for application in other parts of the world where suitable tide gauge, GPS, and geoid information exist. \ua9 Taylor and Francis Inc
Calibration of the Envisat and Jason-1 Altimeters
No full textThis study reports on the absolute and cross calibrations of the Jason-1 and ENVISAT altimeters launched in December 2001 and March 2002 respectively. The ENVISAT study has been undertaken as a contribution to the ENVISAT alimeter Cross Calibration and Validation Tam and the Precise Orvit Determination Team. Cross calibration of ENVISAT utilies both repeat pass data with ERS-2 and crossover data with ERS-2, TOPEX.Poseidon and Jason-1. Values from ENVISAT relative calibrations using geophysical data from the ENVISAT GDR\u27s will be compared against results utilising orbits and other corrections computed at Newcastle University. In addition results will be presented from an absolute calibration campaign for the TOPEX, Poseidon and Jason-1 altimeters utilising UK tide gauge data extrapolated to sub-satellite points using local models for the geoid with the ocean tital corrections inferred from the TOPEX altimetry
sj-docx-1-tra-10.1177_14604086231201533 - Supplemental material for Bilateral lower extremity injuries in pedestrian versus motor vehicle collisions
No full textSupplemental material, sj-docx-1-tra-10.1177_14604086231201533 for Bilateral lower extremity injuries in pedestrian versus motor vehicle collisions by David T Marvin, Jesse Seilern und Aspang, Alexander Webb, Jason Shah, Nicholas Cantu, Roberto C Hernandez-Irizarry and Thomas J Moore in Trauma</p
Calibration of ERS-2, TOPEX/Poseidon and Jason-1 Microwave Radiometers using GPS and Cold Ocean Brightness Temperatures
No full textSea-level change studies from altimetric satellites are reliant on range stability of the sea-surface heights computed from the orbital positioning and geophysically corrected data. One such correction, namely the wet tropospheric delay induced by the highly variable atmospheric water vapour content, is provided by radiometers onboard ERS-2, TOPEX/Poseidon and its follow on mission Jason-1. In this study the long term stability of ERS-2 and TOPEX radiometers are investigated together with radiometer performance to date of Jason-1. Each of the three microwave radiometers is investigated with observed drift in the brightness temperatures approximated by reference to the coldest tempertures over the oceans. For example the TOPEX radiometer investigations show that the dominant drift is about 0.2 k/year in the 18GHz channel over the first 7-8 years stablising and even decreasing slightly thereafter. In contrast, the 21GHz and 37GHz channels are comparitively stable. Utilising correc6tion formulae a modified wet tropospheric range is inferred from \u27small-change\u27 analysis of the radiometric correction given on the altimetric Geophysical Data Records. This investigation undertakes the validation of the accuracy of this formulism by independant comparison against GPS derived wet tropospheric delays inferred at 14 coastal IGS stations with neat continuous data from Sept. 1992 through to the present day. Early comparison between GPS results and ERS-2 and TOPEX shows the ERS-2 radiometer measuring ~14mm long. Additionally for TOPEX, the altimetric range stability is revisited by comparison against time series from the global network of tide gauges
Neutron Imaging With Li-Glass Based Multicore SCIntillating FIber (SCIFI)
No full textThe improvement of neutron imaging towards and beyond the microscale is a well-documented need for the iterative characterization and modeling of numerous microstructured X-ray opaque materials. This work presents the recent progress in evaluating a SCIntillating FIber (SCIFI) proof-of-concept towards micron-level thermal neutron radiography. These SCIFIs are composed of 6Li-enriched silicate glass cores doped with a Ce activator. The cores possess ~8.5 μm diameters and ~10 μm pitch following fiber drawing with a cladding glass into an all-solid multicore fiber. A polished 5 mm × 5 mm array of 100 microstructured multicore SCIFI pixels was fabricated into a 1 mm thick faceplate. The neutron efficiency and light yield of the faceplate are characterized as functions of the 7.38 weight percent of Li2O, thickness, and the 70% active volume. It was determined that approximately 39% of a thermal neutron ( Å) beam can be absorbed by the faceplate. The (,) reaction is estimated to produce 7,700 ± 1,000 scintillation photons per event, referencing light collection from 241Am irradiation of the faceplate. Simulations suggest that on average 17.5 ± 1.4% of these photons will be transported to an end of the fiber array for a thermal beam, with at least 7.2% of that total scintillation light being confined into the fiber cores in which it originated. The SCIFI faceplate was integrated into the Neutron Microscope (NM) at the Pulse OverLap DIffractometer (POLDI) beamline located at the Paul Scherrer Institut to image a Siemens star test object. Processed neutron radiographs acquired with the proof-of-concept faceplate resolved features at a state-of-the-art resolution of 16.1 ± 0.5 μm. The potential for even high resolution designs having smaller pitch or different cladding material is discussed
The effect of snoezelen (Multi-Sensory Behavior Therapy- MSBT) to increase independence in activities of daily living and reduce agitation and apathy of patients with dementia on a short term geriatric psychiatric unit
No full textBackground: Prevention of ADL decline is crucial. Functional decline in ADL’s can cause personal distress, increase the potential for excess disability and increase financial cost and caregiver/staff utilization of time. MSBT was combined with standard inpatient geriatric psychiatric care. Objective: To improve independence in ADLs, reduce agitation and apathy. Methods: A randomized, between group design of 24 participants diagnosed with moderate to severe dementia, 12 in each group from the geriatric psychiatric unit at Beth Israel Medical Center was utilized. Participants were randomized to receive MSBT in combination with standard psychiatric care or to a structured activity such as manipulating play doo or beads, in combination with standard psychiatric care. The protocol consisted of 6 sessions, 25 to 30 minutes, and took place over the course of 2 weeks. Conclusions: Results indicated the elders treated with MSBT combined with psychiatric care and inpatient hospitalization had greater levels of independence in ADLs than the control group, when assessed using blind nurse-rated scale global measure of independence in activities of daily living (p<0.05). In line with improved ADL functioning, elders who received MSBT combined with standard inpatient psychiatric care had significantly diminished levels of agitation and apathy (p<0.05). This combined intervention (MSBT and standard inpatient psychiatric care) may prevent a downward spiral in elder functioning by slowing or diminishing BPSD, excess disability and the negative sequelle concomitant with poor ADL self-care
Absolute Calibration of the Jason-1 Altimeter Using UK Tide Gauges
No full textThis article describes an "absolute" calibration of Jason-1 (J-1) altimeter sea surface height bias using a method developed for TOPEX/Poseidon (T/P) bias determination reported previously. The method makes use of U. K. tide gauges equipped with Global Positioning System (GPS) receivers to measure sea surface heights at the same time, and in the same geocentric reference frame, as Jason-1 altimetric heights recorded in the nearby ocean. The main time-dependent components of the observed altimeter-minus-gauge height-difference time series are due to the slightly different ocean tides at the gauge and in the ocean. The main harmonic coefficients of the tide differences are calculated from analysis of the copious TOPEX data set and then applied to the determination of T, P, and J-1 bias in turn. Datum connections between the tide gauge and altimetric sea surface heights are made by means of precise, local geoid differences from the EGG97 model. By these means, we have estimated Jason-1 altimeter bias determined from Geophysical Data Record (GDR) data for cycles 1-61 to be 12.9 cm, with an accuracy estimated to be approximately 3 cm on the basis of our earlier work. This J-1 bias value is in close agreement with those determined by other groups, which provides a further confirmation of the validity of our method and of its potential for application in other parts of the world where suitable tide gauge, GPS, and geoid information exist
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