Making the case for inclusive design.

This paper describes the University of Cambridge, Engineering Design Centre's (EDC) case for inclusive design, based on 10 years of research, promotion and knowledge transfer. In summary, inclusive design applies an understanding of customer diversity to inform decisions throughout the development process, in order to better satisfy the needs of more people. Products that are more inclusive can reach a wider market, improve customer satisfaction and drive business success. The rapidly ageing population increases the importance of this approach. The case presented here has helped to convince BT, Nestlé and others to adopt an inclusive approach.This is the author accepted manuscript. The final version is available from Elsevier via http://dx.doi.org/10.1016/j.apergo.2013.03.01

Empathic engineering: helping deliver dignity through design.

Dignity is a key value within healthcare. Technology is also recognized as being a fundamental part of healthcare delivery, but also a potential cause of dehumanization of the patient. Therefore, understanding how medical devices can be designed to help deliver dignity is important. This paper explores the role of empathy tools as a way of engendering empathy in engineers and designers to enable them to design for dignity. A framework is proposed that makes the link between empathy tools and outcomes of feelings of dignity. It represents a broad systems view that provides a structure for reviewing the evidence for the efficacy of empathy tools and also how dignity can be systematically understood for particular medical devices.This paper was authored through funding from the EPSRC-NIHR HTC Partnership Award: Promoting Real Independence through Design Expertise (ref: EP/M000273/1) and NIHR Collaboration for Leadership in Applied Health Research and Care East of England (CLAHRC EoE) at the Cambridge and Peterborough NHS Foundation Trust. The views expressed are those of the authors and not necessarily those of the NHS, the NIHR or the Department of Health.This is the final version of the article. It first appeared from Taylor & Francis via http://dx.doi.org/10.3109/03091902.2015.108809

How markets slowly digest changes in supply and demand

In this article we revisit the classic problem of tatonnement in price formation from a microstructure point of view, reviewing a recent body of theoretical and empirical work explaining how fluctuations in supply and demand are slowly incorporated into prices. Because revealed market liquidity is extremely low, large orders to buy or sell can only be traded incrementally, over periods of time as long as months. As a result order flow is a highly persistent long-memory process. Maintaining compatibility with market efficiency has profound consequences on price formation, on the dynamics of liquidity, and on the nature of impact. We review a body of theory that makes detailed quantitative predictions about the volume and time dependence of market impact, the bid-ask spread, order book dynamics, and volatility. Comparisons to data yield some encouraging successes. This framework suggests a novel interpretation of financial information, in which agents are at best only weakly informed and all have a similar and extremely noisy impact on prices. Most of the processed information appears to come from supply and demand itself, rather than from external news. The ideas reviewed here are relevant to market microstructure regulation, agent-based models, cost-optimal execution strategies, and understanding market ecologies.Comment: 111 pages, 24 figure

An observational study to assess validity and reliability of smartphone sensor-based gait and balance assessments in multiple sclerosis: Floodlight GaitLab protocol

Background Gait and balance impairments are often present in people with multiple sclerosis (PwMS) and have a significant impact on quality of life and independence. Gold-standard quantitative tools for assessing gait and balance such as motion capture systems and force plates usually require complex technical setups. Wearable sensors, including those integrated into smartphones, offer a more frequent, convenient, and minimally burdensome assessment of functional disability in a home environment. We developed a novel smartphone sensor-based application (Floodlight) that is being used in multiple research and clinical contexts, but a complete validation of this technology is still lacking. Methods This protocol describes an observational study designed to evaluate the analytical and clinical validity of Floodlight gait and balance tests. Approximately 100 PwMS and 35 healthy controls will perform multiple gait and balance tasks in both laboratory-based and real-world environments in order to explore the following properties: (a) concurrent validity of the Floodlight gait and balance tests against gold-standard assessments; (b) reliability of Floodlight digital measures derived under different controlled gait and balance conditions, and different on-body sensor locations; (c) ecological validity of the tests; and (d) construct validity compared with clinician- and patient-reported assessments. Conclusions The Floodlight GaitLab study (ISRCTN15993728) represents a critical step in the technical validation of Floodlight technology to measure gait and balance in PwMS, and will also allow the development of new test designs and algorithms

Understanding real people: Going beyond single severe capability loss

Some approaches to representing the diverse range of capabilities within the population focus on representing those with severe losses in a single capability, such as vision or mobility. This approach aligns with a simplistic view that people are either able-bodied, or have a single severe capability limitation. This paper challenges this view using data from a population representative survey of the 2019 adult population in Germany. This survey asked participants whether they had any limitations in the daily activities, because of their vision, hearing, memory, concentration, hands, reach or mobility. Out of 1002 valid responses, 158 participants reported that something was 'very limited'. However, 145 of these participants (92%) had a limitation in more than one capability category. Therefore, representing the diverse range of capabilities within the population necessarily requires describing people with co-occurring limitations. The full set of capability limitations for an individual is defined herein as their 'capability finger-print'. Within the German survey, the top 16 capability fingerprints represented 80% of the survey participants. Presenting the most prevalent capability finger-prints is advocated as a better approach for understanding the diversity in the population. These capability fingerprints could be used to develop population-representative personas, or to better understand the sample that took part in small-scale user research.non