Utilising the repertory grid technique in visual prosthetic design : promoting a user-centred approach

This paper proposes a new User-Centred data-collection methodology based on the 9 Repertory Grid Technique (RGT) for the aesthetic design of below-knee prostheses. The innovation of 10 this methodology is to propose a measurable approach guiding the designer to detect latent emotional needs of interviewed prosthetic users to be translated into measurable aesthetic issues to reproduce in their customized devices. This work is situated within the Kansei Engineering framework and is part of a more comprehensive study for the revision of aesthetic prosthetic design. The data of this paper are based on face to face interviews and the results were translated into a set of design principles and elements classifying the statements of the users. This methodology aims to stand as an initiative for a new design system for the improvement of the emotional User Experience of prosthetic users – and to consequently provide products to be positively accepted by the users for the improvement of their body image

A new design system of below-limb prostheses - the role of a visual prosthetic designer

This paper analyses the model of prosthetic design in the context of the public prosthetic centres in the UK, and proposes a new system of design including the role of the visual prosthetic designer. The visual aspect of prosthesis can favour a positive body image in the users; however they are often not advised or provided with models responding to their needs. We claim that the visual designer would improve the process for the appearance of the prosthesis, provide the amputees with visual solutions and support the prosthetists in the design process. The aim of this research is to highlight that more attention is needed for the visual needs of prosthetic users and that a change is needed in the current design approach of public prosthetic centres

Aragonite crystals grown on bones by reaction of CO2 with nanostructured Ca(OH)2 in the presence of collagen. Implications in archaeology and paleontology.

The loss of mechanical properties affecting archeological or paleontological bones is often caused by demineralization processes that are similar to those driving the mechanisms leading to osteoporosis. One simple way to harden and to strengthen demineralized bone remains could be the in situ growth of CaCO3 crystals in the aragonite polymorph - metastable at atmospheric pressure -which is known to have very strong mechanical strength in comparison with the stable calcite. In the present study the controlled growth of aragonite crystals was achieved by reaction between atmospheric CO2 and calcium hydroxide nanoparticles in the presence of collagen within the deteriorated bones. In a few days the carbonation of Ca(OH)2 particles led to a mixture of calcite and aragonite, increasing the strength of the mineral network of the bone. Scanning electron microscopy coupled with energy dispersive X-ray spectroscopy (SEM-EDS) and Fourier transform infrared (FT-IR) spectrometry showed that aragonite crystallization was achieved. The effect of the aragonite crystal formation on the mechanical properties of the deteriorated bones was investigated by means of X-rays microtomography, helium porosimetry, atomic force microscopy (AFM), and Vickers microhardness techniques. All these data enabled to conclude that the strength of the bones increased of a factor of 50-70% with respect to the untreated bone. These results could have immediate impact for preserving archeological and paleontological bone remains

Aesthetic of prosthetic devices : from medical equipment to a work of design

Aesthetics of prosthesis design is a field of research investigating the visual aspect of the devices as a factor connected to the emotional impact in prosthetic users. In this chapter we present a revised concept of perception and use of prosthetic devices by offering a view of ‘creative product’ rather than ‘medical device’ only. Robotic-looking devices are proposed as a way of promoting a new and fresh perception of amputation and prosthetics, where ‘traditional’ uncovered or realis-tic devices are claimed not to respond with efficacy to the aesthetic requirements of a creative product. We aim to promote a vision for a change in the understand-ing of amputation - and disability in general - by transforming the concept of Dis-ability to Super-ability, and to propose the use of attractive-looking prosthetic forms for promoting this process

Chemotherapy and palliative care near end-of life: Examining the appropriateness at a cancer institute for colorectal cancer patients

Background: Appropriate cessation of chemotherapy and timely referral of patients to hospice services are crucial for the quality of care near death. We investigated the quality of care in our Cancer Institute in very advanced metastatic colorectal cancer patients treated in real life. Patients and Methods: We performed a retrospective analysis of electronic medical data of patients with metastatic colorectal cancer who were candidates for chemotherapy during the study period (1 January 2007-30 June 2014) and died before 31 December 2014. Quality-of-cancer-care indicators were calculated for the overuse of chemotherapy and referral to hospice. Predictive factors of chemotherapy discontinuation and hospice referral in end-of life care were investigated using parametric and nonparametric methods. Results: Of the 365 patients who died before 31 December 2014, 26 (7.1%) received chemotherapy in the last 14 days of life and 36 (9.8%) started a new chemotherapy regimen in the last 30 days of life. Factors associated with the overuse of chemotherapy were being < 70 years of age for both indicators and not having received advanced chemotherapy treatments for the former indicator. The majority of patients (74.7%) had access to hospice services, of whom only a small percentage (7.2%) accessed them very near to death. Conclusions: According to the criteria used, our Institute provides a good quality of cancer care for dying colorectal cancer patients, measured by the use of chemotherapy and referral to hospice in their last days of life

Second-opinion stress tele-echocardiography for the Adonhers (Aged donor heart rescue by stress echo) project

<p>Abstract</p> <p>Background</p> <p>To resolve the current shortage of donor hearts, we established the Adonhers protocol. An upward shift of the donor age cut-off limit (from the present 55 to 65 years) is acceptable if a stress echo screening on the candidate donor heart is normal. This study aimed to verify feasibility of a "second opinion" of digitally transferred images of stress echo results to minimize technical variability in selection of aged donor hearts for heart transplant.</p> <p>Methods</p> <p>The informatics infrastructure was created for a core lab reading with a second opinion from the Pisa stress echo lab. To test the system, simulation standard stress echo cineloops were sent digitally from 5 peripheral labs to the central core lab.</p> <p>Starting January 2009, real marginal donor stress echos were sent via internet to the central core echo lab, Pisa, for a second opinion before heart transplant.</p> <p>Results</p> <p>In the simulation protocol, 30 dipyridamole stress echocardiograms were sent from the five peripheral echo labs to the central core lab in Pisa. Both the echo images and reports were correctly uploaded in the web system and sent to the core echo lab; the second opinion evaluation was obtained in all cases (100% feasibility). In the transplant protocol, eight donor cases were sent to the Pisa core lab for the second opinion protocol, and six of them were transplanted in marginal recipients.</p> <p>Conclusions</p> <p>Second-Opinion Stress Tele-Echocardiography can effectively be performed in a network aimed to safely expand the heart donor pool for heart transplant.</p

Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements