1,049 research outputs found

    Making visible an invisible trade : exploring the everyday experiences of doing social work and being a social worker

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    This article demonstrates that making art in conjunction with story-telling is a method which can elucidate the everyday working practices of social work practitioners. To date, the relationship between art and social workers has rarely been noted, in part because visual studies have not attended to lived experiences of social workers. In this paper, we draw on an empirical study undertaken in England which invited social workers to use art to tell their stories of being a social worker and doing social work. Their artefacts produced powerful visual and aural accounts of practice. They were displayed at the People’s History Museum, in the first social work exhibition of this kind, making visible to members of the public the hidden, lesser known and understood aspects of practice. In this paper, we demonstrate how particular social work structures can rupture relationships between social workers and the families they work with. In doing so, we build on the sociology of art, work and interaction by showing how visual narratives can challenge, and sometimes alter, previously held assumptions and beliefs

    Lyapunov Exponent Pairing for a Thermostatted Hard-Sphere Gas under Shear in the Thermodynamic Limit

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    We demonstrate why for a sheared gas of hard spheres, described by the SLLOD equations with an iso-kinetic Gaussian thermostat in between collisions, deviations of the conjugate pairing rule for the Lyapunov spectrum are to be expected, employing a previous result that for a large number of particles NN, the iso-kinetic Gaussian thermostat is equivalent to a constant friction thermostat, up to 1/N1/\sqrt{N} fluctuations. We also show that these deviations are at most of the order of the fourth power in the shear rate.Comment: 4 pages, to appear in Rapid Comm., Phys. Rev.

    UPPER BODY MOVEMENTS IN ELITE JAVELIN THROWS

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    INTRODUCTION - For an athlete to compete at an international level he will not only need the raw materials necessary for the event, but an effective training programme. That will enable him to utilise these resources to the full. It is well accepted that exercise prescription must match the mode of training to the desired effect. This is embodied in the specificity principle which states that training adaptations are specific to the cells and their structural and functional elements that are overloaded (McCafferty & Horvath, 1977).Hence, to provide training advice to the elite javelin thrower exact details of the thrower's movements during the event must be known. Otherwise, developing a training programme to fit the thrower's requirements will be impossible. It was the aim of this study to quantify the upper body movements of a group of elite javelin throwers when performing at the highest level of competition. Every throw of12 athletes competing in the men's javelin final of the 1995 World Championships were filmed and, subsequently analysed. Filming was conducted using 2 phase-locked High speed Photosonics 1PL cine cameras which were zoomed on the javelin runway such that all of the thrower's movements incorporating the last few cross-over strides, the delivery and the first few meters of the javelin6gM after release, were in full view. Calibration of this area was achieved by mounting Rflective spherical markers on a system of vertical poles that were arranged to surround a 7 m x 4 m x 3.2 m volume. Three dimensional coordinates of the markers were generated using an Elta Ill tachymeter. The films developed and the best performances of the competitors were digitised using a sys-tem developed by Bartlett (1 990) compatible with Acorn Archimedes computers. RESULTS -Analysis of the best throws by the three medallists (all over 86 m) showed that all three athletes achieved release speeds in excess of 30 m.s-I. However, the way in which each athlete achieved such a high speed was very different indeed. For example, the gold and silver medallists were found to laterally align the trunk during the delivery in a similar manner. Nevertheless, the path of the javelin grip in a lateral direction differed by 54 cm between the two athletes. Furthermore, angular velocities of the elbow joints in extension were found to range between 45.0 rad.s-I and 26.5 rad.s! Similarly the movement of the upper arm during the delivery was a combination of extension, horizontal flexion and abduction, the angular velocities of which ranged from 21.8rad.s-I to 15.6 rad.s-I. Medial rotation angular velocities were as high as 45.0 rad.s-I indicating that this also is a important contributor to the release speed of the javelin. CONCLUSIONS - These results suggest that the patterns of muscular activation or the muscles used to accelerate the javelin were very different for the three medal lists. It would therefore seem appropriate that the training programmes of each athlete should be different and designed very specifically to meet their unique movement pattern. Examining the contribution of the upper body musculature to the release speed of the javelin is an aim of future research. REFERENCES Bartlett, R.M. (1 990). A biomechanical analysisprogramme package. Unpub. Mas. Thes.McCafferty, W.B. & Horvath, S.M. (1977).Research Quarterly, 48, 358-37 1

    The role of intolerance of uncertainty in classical threat conditioning::Recent developments and directions for future research

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    Intolerance of uncertainty (IU), the tendency to find uncertainty aversive, is an important transdiagnostic dimension in mental health disorders. Over the last decade, there has been a surge of research on the role of IU in classical threat conditioning procedures, which serve as analogues to the development, treatment, and relapse of anxiety, obsessive-compulsive, and trauma- and stressor-related disorders. This review provides an overview of the existing literature on IU in classical threat conditioning procedures. The review integrates findings based on the shared or discrete parameters of uncertainty embedded within classical threat conditioning procedures. Under periods of unexpected uncertainty, where threat and safety contingencies change, high IU, over other self-reported measures of anxiety, is specifically associated with poorer threat extinction learning and retention, as well as overgeneralisation. Under periods of estimation and expected uncertainty, where the parameters of uncertainty are being learned or have been learned, such as threat acquisition training and avoidance learning, the findings are mixed for IU. These findings provide evidence that individual differences in IU play a significant role in maintaining learned fear and anxiety, particularly under volatile environments. Recommendations for future research are outlined, with discussion focusing on how parameters of uncertainty can be better defined to capture how IU is involved in the maintenance of learned fear and anxiety. Such work will be crucial for understanding the role of IU in neurobiological models of uncertainty-based maintenance of fear and anxiety and inform translational work aiming to improve the diagnosis and treatment of relevant psychopathology.</p

    Time-oscillating Lyapunov modes and auto-correlation functions for quasi-one-dimensional systems

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    The time-dependent structure of the Lyapunov vectors corresponding to the steps of Lyapunov spectra and their basis set representation are discussed for a quasi-one-dimensional many-hard-disk systems. Time-oscillating behavior is observed in two types of Lyapunov modes, one associated with the time translational invariance and another with the spatial translational invariance, and their phase relation is specified. It is shown that the longest period of the Lyapunov modes is twice as long as the period of the longitudinal momentum auto-correlation function. A simple explanation for this relation is proposed. This result gives the first quantitative connection between the Lyapunov modes and an experimentally accessible quantity.Comment: 4 pages, 3 figure

    Debating the Field Civil Code 105 Years Late

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    In 1895, Montana adopted a version of the Field Civil Code--a massive law originally drafted by New York lawyer David Dudley Field in the early 1860s. The Civil Code (and its companion Political, Penal, and Procedural Codes) were adopted without debate, without legislative scrutiny, and without Montanans having an opportunity to grasp the enormity of the changes the Codes brought to the Montana legal system. In sponsoring this debate over whether to repeal the Civil Code, the Montana Law Review is finally giving Montana the opportunity to examine the merits of the Civil Code that she was denied 105 years ago

    Debating the Field Civil Code 105 Years Late

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    Debating the Field Civil Code 105 Years Lat

    Lyapunov instability for a periodic Lorentz gas thermostated by deterministic scattering

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    In recent work a deterministic and time-reversible boundary thermostat called thermostating by deterministic scattering has been introduced for the periodic Lorentz gas [Phys. Rev. Lett. {\bf 84}, 4268 (2000)]. Here we assess the nonlinear properties of this new dynamical system by numerically calculating its Lyapunov exponents. Based on a revised method for computing Lyapunov exponents, which employs periodic orthonormalization with a constraint, we present results for the Lyapunov exponents and related quantities in equilibrium and nonequilibrium. Finally, we check whether we obtain the same relations between quantities characterizing the microscopic chaotic dynamics and quantities characterizing macroscopic transport as obtained for conventional deterministic and time-reversible bulk thermostats.Comment: 18 pages (revtex), 7 figures (postscript
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