100,381 research outputs found

    Managed ecosystems of networked objects

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    Small embedded devices such as sensors and actuators will become the cornerstone of the Future Internet. To this end, generic, open and secure communication and service platforms are needed in order to be able to exploit the new business opportunities these devices bring. In this paper, we evaluate the current efforts to integrate sensors and actuators into the Internet and identify the limitations at the level of cooperation of these Internet-connected objects and the possible intelligence at the end points. As a solution, we propose the concept of Managed Ecosystem of Networked Objects, which aims to create a smart network architecture for groups of Internet-connected objects by combining network virtualization and clean-slate end-to-end protocol design. The concept maps to many real-life scenarios and should empower application developers to use sensor data in an easy and natural way. At the same time, the concept introduces many new challenging research problems, but their realization could offer a meaningful contribution to the realization of the Internet of Things

    User-centered design of a dynamic-autonomy remote interaction concept for manipulation-capable robots to assist elderly people in the home

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    In this article, we describe the development of a human-robot interaction concept for service robots to assist elderly people in the home with physical tasks. Our approach is based on the insight that robots are not yet able to handle all tasks autonomously with sufficient reliability in the complex and heterogeneous environments of private homes. We therefore employ remote human operators to assist on tasks a robot cannot handle completely autonomously. Our development methodology was user-centric and iterative, with six user studies carried out at various stages involving a total of 241 participants. The concept is under implementation on the Care-O-bot 3 robotic platform. The main contributions of this article are (1) the results of a survey in form of a ranking of the demands of elderly people and informal caregivers for a range of 25 robot services, (2) the results of an ethnography investigating the suitability of emergency teleassistance and telemedical centers for incorporating robotic teleassistance, and (3) a user-validated human-robot interaction concept with three user roles and corresponding three user interfaces designed as a solution to the problem of engineering reliable service robots for home environments

    A Grism Design Review and the as-built performance of the silicon grisms for JWST-NIRCAM

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    Grisms are dispersive transmission optics that find their most frequent use in instruments that combine imaging and spectroscopy. This application is particularly popular in the infrared where imagers frequently have a cold pupil in their optical path that is a suitable location for a dispersive element. In particular, several recent and planned space experiments make use of grisms in slit-less spectrographs capable of multi-object spectroscopy. We present an astronomer-oriented general purpose introduction to grisms and their use in current and future astronomical instruments. We present a simple, step-by-step procedure for adding a grism spectroscopy capability to an existing imager design. This procedure serves as an introduction to a discussion of the device performance requirements for grisms, focusing in particular on the problems of lithographically patterned silicon devices, the most effective grism technology for the 1.1-8 micron range. We begin by summarizing the manufacturing process of monolithic silicon gratings. We follow this with a report in detail on the as-built performance of parts constructed for a significant new space application, the NIRCam instrument on JWST and compare these measurements to the requirements.Comment: Accepted for publication in PAS

    The 'inclusive engineering' approach: an optimum diameter for ease of opening

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    Social equality demands a shift in attitude, away from treating older people and people with disabilities as special cases requiring special design solutions, and towards enabling them to have equal access to any product or service through a more inclusive approach to the design of buildings, public spaces and, more recently, products and services. This is not just important for social equality but also for business growth through new products and services and through creating wider potential markets. It is a sad fact of life that as people get older there is a massive decline in their strength and dexterity. Due to the fact that we handle and manipulate so many things throughout our life time, from the tiniest and most dexterous of tasks to heavy manual labour, this decline is very noticeable in our hands. In nearly all the actions that we use our hands for there is some form of grip used in order to hold onto an object before manipulating it. The natural decrease in strength combined with debilitating illness such as arthritis, means that hand grip strength or finger grip strength are very seriously affected. This has a knock on affect of making it much harder to twist things or pinch and pull things. Therefore there is often a measured decrease in torque strength with age caused not so much by a decrease in wrist strength but more often than not by a decrease in grip strength. Consumer packaging is a field in which many people, including young able bodied people, often struggle in relation to openability. Yet it is present in even the most mundane and neccessary of every day tasks such as eating, cleaning teeth, even drinking. Human interation with consumer packaging requires a wide range of hand dexterity and strength and a variety of differing hand actions. This paper looks at just one such set of actions; that used to open bottles and jars. It outlines all the arguments for inclusive design, stressing the importance for both consumers and business. This paper also outlines an engineering design approach for inclusive design that uses real human factors as design limits, resulting in packaging that will be easily opened by all it’s end users without the expensive trial and error approach that has been used up to this point in time. This paper examines the affect of grip strength on the required trorque to open closures and concludes that there is an optimum diameter for ease of opening that will decrease the required strength to open such closures

    Improving collaborative practice to address offender mental health: criminal justice and mental health service professionals’ attitudes towards interagency training, current training needs and constraints,

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    Background Professionals from the mental health and criminal justice system must collaborative effectively to address offender mental health but interprofessional training is lacking. Pedagogical frameworks are required to support the development of training in this new area. Aim To inform this framework this paper explores the readiness of professionals towards interprofessional training and demographic differences in these. It explores expectations of interprofessional training, perceived obstacles to collaborative working, interprofessional training needs and challenges facing delivery. Method A concurrent mixed methods approach collected data from professionals attending a crossing boundaries interprofessional workshop. Data was collected through a combination of the RIPLS questionnaire (n=52), free text questions (n=52) and focus groups (n=6). Findings and Conclusions Mental health and criminal justice professionals’ attitudes towards interprofessional learning were positive (x=17.81; n=43). They did not see their own service as insular (x =4.02; n=44) and reported strong person centredness (x= 6.07; n=43). This suggests professionals are open to the introduction and implementation of future interprofessional training. There were no significant demographic differences in these attitudes. Professionals raised a range of generic curriculum and educator mechanisms in the development of future interprofessional training suggesting the transfer of pedagogical frameworks from established interprofessional programmes into this new arena is feasible. Context specific factors such offender national policy agendas and the challenges of user involvement using mentally ill offenders must be taken into account. Greater clarity on multi versus interprofessional training is still required with this group of professionals. Key words: mental health, offenders, criminal justice, interprofessional training
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