Dynamical system representation, generation, and recognition of basic oscillatory motion gestures

We present a system for generation and recognition of oscillatory gestures. Inspired by gestures used in two representative human-to-human control areas, we consider a set of oscillatory motions and refine from them a 24 gesture lexicon. Each gesture is modeled as a dynamical system with added geometric constraints to allow for real time gesture recognition using a small amount of processing time and memory. The gestures are used to control a pan-tilt camera neck. We propose extensions for use in areas such as mobile robot control and telerobotics

Dynamic System Representation of Basic and Non-Linear in Parameters Oscillatory Motion Gestures

We present a system for generation and recognition of oscillatory gestures. Inspired by gestures used in two representative human-to-human control areas, we consider a set of oscillatory (circular) motions and refine from them a 24 gestures lexicon. Each gesture is modeled as a dynamic system with added geometric constraints to allow for real time gesture recognition using a small amount of processing time and memory. The gestures are used to control a pan-tilt camera neck. The gesture lexicon is then enhanced to include non-linear in parameter ( come here ) gesture representations. An enhancement is suggested which would enable the system to be trained to recognized previously unidentified yet consistent human generated oscillatory motion gestures

What do children think of their own bilingualism? Exploring bilingual children’s attitudes and perceptions

Aims and objectives: This paper explores children’s experiences and perceptions of their own bilingualism in two contexts in Scotland, UK: a primary school with a high proportion of children using a language other than English at home; and a primary school where the language of instruction is an indigenous, minority language, Gaelic. Methodology: The paper draws upon data gathered from multiple qualitative methods, including interviews, group activities and discussion, with both children and their parents. The data in this paper draw upon a broader interdisciplinary project exploring children’s experiences of bilingualism. Ethics were duly considered. Data and analysis: Data were gathered from 27 children and 11 parents. Data were coded and analysed using thematic analysis. Comparison between contexts was of particular interest for this article. Findings: This paper highlights the importance of research with children in order to gain an insight into their experiences and perceptions of their own bilingualism. In particular, our findings illustrate how children’s language learning is encouraged and supported by children’s connections with others and the fundamental role of family (particularly parents/carers) and diverse community-based support systems (which encompass a wide range of individuals and community groups) in order to develop active bilingualism. Originality: This paper addresses a research gap in a largely quantitative field, by adopting a qualitative approach to explore children’s experiences and perceptions of their own bilingualism. A qualitative approach facilitates attention to complexity and the participants’ own meanings and understandings. Significance: The paper highlights the value of research with children in order to explore their views and perspectives. In particular, qualitative research methodologies, where children’s experiences are central to understanding the research phenomenon, and to facilitating the exploration of the range of complex issues that interact with a child’s bilingualism.Output Status: Forthcoming/Available Onlin

Strategies for Real-Time Position Control of a Single Atom in Cavity QED

Recent realizations of single-atom trapping and tracking in cavity QED open the door for feedback schemes which actively stabilize the motion of a single atom in real time. We present feedback algorithms for cooling the radial component of motion for a single atom trapped by strong coupling to single-photon fields in an optical cavity. Performance of various algorithms is studied through simulations of single-atom trajectories, with full dynamical and measurement noise included. Closed loop feedback algorithms compare favorably to open-loop "switching" analogs, demonstrating the importance of applying actual position information in real time. The high optical information rate in current experiments enables real-time tracking that approaches the standard quantum limit for broadband position measurements, suggesting that realistic active feedback schemes may reach a regime where measurement backaction appreciably alters the motional dynamics.Comment: 12 pages, 10 figures, submitted to J. Opt. B Quant. Semiclass. Op

A longitudinal investigation of repressive coping and ageing

This is an Accepted Manuscript of an article published by Taylor & Francis in Aging & Mental Health on October 2016, available online: http://www.tandfonline.com/doi/full/10.1080/13607863.2015.1060941.Two studies investigated the possibility that repressive coping is more prevalent in older adults and that this represents a developmental progression rather than a cohort effect. Study 1 examined repressive coping and mental health cross-sectionally in young and old adults. Study 2 examined whether there was a developmental progression of repressive coping prevalence rates in a longitudinal sample of older adults.Peer reviewedFinal Accepted Versio