Rotational joint assembly for the prosthetic leg

A rotational joint assembly for a prosthetic leg has been devised, which enables an artificial foot to rotate slightly when a person is walking, running or turning. The prosthetic leg includes upper and lower tubular members with the rotational joint assembly interposed between them. The assembly includes a restrainer mechanism which consists of a pivotably mounted paddle element. This device applies limiting force to control the rotation of the foot and also restores torque to return the foot back to its initial position

Prosthesis coupling

A coupling for use in an apparatus for connecting a prosthesis to the bone of a stump of an amputated limb is described which permits a bio-compatible carbon sleeve forming a part of the prosthesis connector to float so as to prevent disturbing the skin seal around the carbon sleeve. The coupling includes a flexible member interposed between a socket that is inserted within an intermedullary cavity of the bone and the sleeve. A lock pin is carried by the prosthesis and has a stem portion which is adapted to be coaxially disposed and slideably within the tubular female socket for securing the prosthesis to the stump. The skin around the percutaneous carbon sleeve is able to move as a result of the flexing coupling so as to reduce stresses caused by changes in the stump shape and/or movement between the bone and the flesh portion of the stump

Influence of water temperature on the efficacy of diquat and endothall versus curlyleaf pondweed

determine the impact of water temperature on the efficacy of the contact herbicides diquat (6,7-dihydrodipyrido [1,2- α:2’,1’-c] pyrazinediium ion) and endothall (7-oxabicyclo [2.2.1] heptane-2,3-dicarboxylic acid) for control of the exotic nuisance species curlyleaf pondweed (Potamogeton crispus L.) across a range of water temperatures

Intervening to prevent a suicide in a public place: a qualitative study of effective interventions by lay people

This is the final version. Available from BMJ Publishing Group via the DOI in this record. Objectives Many suicides take place in public locations, usually involving jumping from high places or use of transport networks. Previous research has largely focused on the effectiveness of physical barriers at frequently used locations. There have been no studies of human intervention to prevent suicides in public places. The aim of this study was to identify the core components of an effective intervention by a member of the public. Design and methods We conducted in-depth qualitative interviews with people who have either been prevented by a stranger from taking their own life in a public location (n=12) or intervened to prevent a stranger from taking their own life in a public location (n=21). Collectively, the two groups narrated 50 incidents of suicide rescue. We analysed interview transcripts using inductive thematic analysis. Results Suicidal people typically displayed no visible distress, describing themselves as being dissociated or ‘in a bubble’. Intervention was seen to involve three main tasks: ‘bursting the bubble’ (reconnecting with self, others and everyday world); moving to a safer location, and summoning help. We show how interveners accomplished these tasks in a range of ways, using both verbal and non-verbal communication and different degrees of restraint. Conclusions This is the first empirical study to examine the role of passing strangers in preventing suicides in public places. It shows that no specialist skills are needed. Interveners were ordinary people, distinguished only by a high level of social awareness, combined with a readiness for social action. The findings also suggest that people do not need a script and should not be afraid of saying ‘the wrong thing.’ What interveners said was much less important than how they made the suicidal person feel, namely safe, connected and validated (‘I matter’). Interveners did this simply by being themselves, responding with authenticity, calmness and compassion. Members of the public need to be encouraged to recognise and reach out to those who may be at risk of suicide in public locations, but should be prepared for a prolonged and intense encounter that may leave them with troubling emotions.Medical Research Council (MRC

Scout motor performance analysis and prediction study /PAPS/

Scout motor performance analysis and predictio

Abrupt onsets capture attention independent of topdown control settings

Previous research using a spatial cuing paradigm in which a distractor cue preceded the target has shown that new objects presented with abrupt onsets only capture attention when observers are set to look for them (e.g., Folk, Remington, & Johnston, 1992). In the present study, we used the same spatial cuing paradigm as Folk et al. (1992) to demonstrate that even when observers have an attentional set for a color singleton or a specific color feature, an irrelevant new object presented with an abrupt onset interfered with search. We also show that the identity of the abrupt-onset distractor affects responses to the target, indicating that at some point spatial attention was allocated to the abrupt onset. We conclude that abrupt onsets or new objects override a top-down set for color. Abrupt onsets or new objects appear to capture attention independently of top-down control settings. Copyright 2008 Psychonomic Society, Inc

Nuclear corrections in neutrino-nucleus DIS and their compatibility with global NPDF analyses

We perform a global chi^2-analysis of nuclear parton distribution functions using data from charged current neutrino-nucleus deep-inelastic scattering (DIS), charged-lepton-nucleus DIS, and the Drell-Yan (DY) process. We show that the nuclear corrections in nu-A DIS are not compatible with the predictions derived from l^+A DIS and DY data. We quantify this result using a hypothesis-testing criterion based on the chi^2 distribution which we apply to the total chi^2 as well as to the chi^2 of the individual data sets. We find that it is not possible to accommodate the data from nu-A and l^+A DIS by an acceptable combined fit. Our result has strong implications for the extraction of both nuclear and proton parton distribution functions using combined neutrino and charged-lepton data sets.Comment: 5 page

The Success of Former Solicitors General in Private Practice: Costly and Unnecessary?

Article published in the Michigan State Law Review

The impact of new neutrino DIS and Drell-Yan data on large-x parton distributions

New data sets have recently become available for neutrino and antineutrino deep inelastic scattering on nuclear targets and for inclusive dimuon production in pp pd interactions. These data sets are sensitive to different combinations of parton distribution functions in the large-x region and, therefore, provide different constraints when incorporated into global parton distribution function fits. We compare and contrast the effects of these new data on parton distribution fits, with special emphasis on the effects at large x. The effects of the use of nuclear targets in the neutrino and antineutrino data sets are also investigated.Comment: 24 pages, 13 figure

Flow pattern transition accompanied with sudden growth of flow resistance in two-dimensional curvilinear viscoelastic flows

We find three types of steady solutions and remarkable flow pattern transitions between them in a two-dimensional wavy-walled channel for low to moderate Reynolds (Re) and Weissenberg (Wi) numbers using direct numerical simulations with spectral element method. The solutions are called "convective", "transition", and "elastic" in ascending order of Wi. In the convective region in the Re-Wi parameter space, the convective effect and the pressure gradient balance on average. As Wi increases, the elastic effect becomes suddenly comparable and the first transition sets in. Through the transition, a separation vortex disappears and a jet flow induced close to the wall by the viscoelasticity moves into the bulk; The viscous drag significantly drops and the elastic wall friction rises sharply. This transition is caused by an elastic force in the streamwise direction due to the competition of the convective and elastic effects. In the transition region, the convective and elastic effects balance. When the elastic effect dominates the convective effect, the second transition occurs but it is relatively moderate. The second one seems to be governed by so-called Weissenberg effect. These transitions are not sensitive to driving forces. By the scaling analysis, it is shown that the stress component is proportional to the Reynolds number on the boundary of the first transition in the Re-Wi space. This scaling coincides well with the numerical result.Comment: 33pages, 23figures, submitted to Physical Review