Mostrando recursos 1 - 20 de 721

  1. Rumex and Urtica detection in grassland by UAV

    Binch, Adam; Cooke, Nigel; Fox, Charles
    . Previous work (Binch & Fox, 2017) used autonomous ground robotic platforms to successfully detect Urtica (nettle) and Rumex (dock) weeds in grassland, to improve farm productivity and the environment through precision herbicide spraying. It assumed that ground robots swathe entire fields to both detect and spray weeds, but this is a slow process as the slow ground platform must drive over every square meter of the field even where there are no weeds. The present study examines a complimentary approach, using unmanned aerial vehicles (UAVs) to perform faster detections, in order to inform slower ground robots of weed location...

  2. Employment effects of CAP payments in the UK non-farm economy

    Rizov, Marian; Davidova, Sophia; Bailey, Alastair
    This paper investigates the effects of the CAP payments on the indirectly generated non-farm jobs in small and medium-sized enterprises (SMEs), which are central to job creation. It examines whether there are differences in the effect according to business location - rural or urban, the agricultural supply chain, and according to CAP Pillars. A microeconomic approach is employed, based on firm data from FAME dataset combined with detailed subsidies information from DEFRA. The generalised method of moments (system GMM) is used to estimate the effect of CAP payments in both static and dynamic models of employment. The results suggest positive...

  3. Indicator Waves: a new temporal method for measuring multiple behaviours as indicators of future events

    Keatley, David; Clarke, David
    The traditional approach to research in Psychology has been to use cross-sectional designs. While temporal methods are not new, they are relatively under-used; however, researchers have been developing methods to analyse temporal dynamics [1 - 3]. Mapping changes in behaviour over time facilitates understanding of causal effects and predicting of future outcomes. To date, there are several main approaches to analysing the influence of variables over time in dynamic systems: Survival Analysis [4 - 5]; Behaviour Sequence Analysis [3], T-Pattern Analysis [6 - 7]; and temporal Social Network Analysis [8 - 9]. All of these methods have proven hugely beneficial...

  4. Zeolite supported Pd electrocatalyst nanoparticle characterization

    Yao, Jun; Yao, Yufeng
    A laboratory made 1.5 wt% Palladium (Pd) zeolite electrocatalyst is investigated using the Extended X-ray Adsorption Fine Structure (EXAFS) and Cyclic Voltammetry (CV) techniques to reveal Pd structure and resultant electrochemical performance. It was found that the electrochemical activity of hydrogen charger transfer in the hydride region increased for electrocatalyst with large-size particles made at high temperature of 400 °C, compared to those with small-size particles calcined and reduced at temperature below 360 °C, at which no major discrepancies were observed between catalysts of different sizes. Furthermore, Pd particle location has played an important role to enhance electrocatalyst performance. The...

  5. Multifunctional efficiency: extending the concept of atom economy to functional nanomaterials

    Freund, Ralph; Lächelt, Ulrich; Gruber, Tobias; Rühle, Bastian; Wuttke, Stefan
    Green chemistry, in particular, the principle of atom economy, has defined new criteria for the efficient and sustainable production of synthetic compounds. In complex nanomaterials, the number of embedded functional entities and the energy expenditure of the assembly process represent additional compound-associated parameters that can be evaluated from an economic viewpoint. In this Perspective, we extend the principle of atom economy to the study and characterization of multifunctionality in nanocarriers, which we define as “multifunctional efficiency”. This concept focuses on the design of highly active nanomaterials by maximizing integrated functional building units while minimizing inactive components. Furthermore, synthetic strategies aim...

  6. Towards acoustic condition monitoring for detection and characterisation of laser induced breakdown in a gas turbine laser ignition system

    Griffiths, Jonathan David; Kirk, Antony; Grebenik, Jarek
    Acoustic detection and characterisation of laser induced breakdown is an attractive proposition in laser ignition systems in which condition monitoring is necessary but where optical access for monitoring purposes is impractical. Presented is a signal processing method based on wavelet decomposition for the non-invasive detection of acoustic emissions resulting from laser induced breakdown in an atmospheric pressure combustion test rig, representative of a single combustion chamber in a sub 15 MW industrial gas turbine. The probability and consistency of laser induced breakdown is determined from the acoustic signal and used to characterize the operating conditions and identify abrupt and incipient...

  7. Longitudinal manipulation of the kinematic chain using a reducing biofeedback schedule

    Mulloy, Franky; Mullineaux, David; Irwin, Gareth
    Feedback has been shown to be an influential component in skill development, yet this has not been assessed longitudinally in a complex motor skill. Novices (n=32) were introduced to a lunge touch task. Visual biofeedback were given on the timing and magnitude of rear leg kinematics. Results showed that those who received feedback adapted their movement patterns by developing extension velocity magnitudes (40.0%, 24.8% and 28.9% increases for the hip, knee and ankle respectively). The changes were retained across 26 weeks, with a reducing visit schedule of feedback. These results demonstrate that knowledge of performance based biofeedback interventions alone are effective in developing whole limb contributions in an...

  8. Fostering cooperative activism through critical design

    Menendez-Blanco, Maria; Bjorn, Pernille; De angeli, Antonella
    Critical design is gaining momentum in interaction design, yet little CSCW research has focused on articulating the cooperative potentials of critical design artefacts. We address this gap by reflecting upon a design project aimed at overturning the prevailing narrative regarding dyslexia in Italy. The adversarial propositions embedded in our critical design artefacts challenged the description of dyslexia as a learning disorder putting forward the view of a learning difference. These artefacts demonstrated their capacity to bridge heterogeneous social worlds (those of teachers, children, and parents) into one cooperative entity and mobilise cooperative activism. The contribution to CSCW is two-fold. Firstly,...

  9. Greenland Blocking Index daily series 1851-2015: analysis of changes in extremes and links with North Atlantic and UK climate variability and change

    Hanna, E.; Hall, R. J.; Cropper, T. E.; Ballinger, T. J.; Wake, L.; Mote, T.; Cappelen, J.
    We present a homogenised Greenland Blocking Index (GBI) daily record from 1851-2015, therefore significantly extending our previously published monthly/seasonal GBI analysis. This new time series is analysed for evidence of changes in extreme events, and we investigate the underlying thermodynamic and dynamic precursors. We compare occurrences and changes in extreme events between our GBI record and a recently published, temporally similar daily North Atlantic Oscillation (NAO) series, and use this comparison to test dynamic meteorology hypotheses relating negative NAO to Greenland Blocking. We also compare daily GBI changes and extreme events with long-running indices of England and Wales temperature and...

  10. Take a wander in my shoes: of zombeing, twombs and equipmentality

    Richards, Anthony
    This chapter considers the continued critical import of Heidegger's notion of equipmentality in grappling with contemporary currents within the mediatory sphere, using AMC's The Walking Dead as its key example.

  11. The perceptions and experiences of being Community First Responders: an interview study in the UK

    Phung, Viet-Hai; Trueman, Ian; Togher, Fiona; Orner, Roderick; Siriwardena, Niro
    Objective Community First Responder schemes work with ambulance services to support lay volunteers in responding to medical emergencies. Our aim was to explore the perceptions and experiences of Community First Responders about their role. Design and Method We interviewed four female and 12 male adult Community First Responders across a predominantly rural UK county in June-July 2016. Interviews were transcribed verbatim and coded thematically in NVivo 10. Results From the interviews, we identified five overarching themes: ‘getting started and keeping going’, ‘learning to be a Community First Responder’ (training and feedback) ‘the reality of being a Community First Responder’, ‘recognition and relationships’, ‘the...

  12. Interrogating the meaning of a rural business through a rural capitals framework

    Bosworth, Gary; Turner, Roger
    This paper explores the ways in which businesses use and create diverse forms of rural capital, as an attempt to better understand the distinctive characteristics of “rural businesses”. We present three cases to explore the features that might lead us to describe them as being distinctively “rural businesses”. This adds to the debate about whether location alone is a sufficient parameter for defining rural-ness. The business cases were each established in rural areas of northern/central England. The cases were selected to fit an existing categorisation of rural businesses based on personal knowledge about the companies. Data was gathered through a combination of interviews and secondary materials....

  13. Neoliberal ideology in work and organizational psychology

    Bal, P. Matthijs; Dóci, Edina
    This paper explores the role of neoliberal ideology in workplace practices and in work and organizational psychology (WOP) research. It analyzes how neoliberal ideology manifests in these two domains by using a prominent framework from the field of political theory to understand ideology through three different logics: political, social, and fantasmatic logics. We explore the main neoliberal assumptions underlying existing practices in the workplace as well as in WOP research, how individuals are gripped by such practices, and how the status quo is maintained. The paper analyzes how individuals in the contemporary workplace are henceforth influenced by neoliberalism, and how...

  14. Food consumption and diet quality choices of Roma in Romania: a counterfactual analysis

    Ciaian, Pavel; Cupak, Andrej; Pokrovcak, Jan; Rizov, Marian
    This paper analyses the diet quality aspect of food security of Roma in Romania. We employed a modified Blinder-Oaxaca decomposition technique using Household Budget Survey data for the period 2004–2011. The estimates suggest that Roma have inferior diet diversity compared to the non-Roma. Around one-third of the diet diversity gap is explained by the differences in observed socio-economic factors, whereas the remaining part of the gap is attributed to unobserved factors. We argue that the unexplained component of the diet diversity gap is caused by the discrimination of the Roma on the labour market and by their specific informal institutions.

  15. Tapestries at Doddington Hall: collecting, conservation and display

    Warriner-Wood, Leah
    This study examines tapestries as part of the collecting and display strategies of the Delaval family at Doddington Hall, Lincolnshire. The Doddington tapestries are the focus of the author’s doctoral research within the School of History and Heritage at the University of Lincoln. The work centres on the alteration and deployment of seventeenth-century tapestries in two bedchambers at Doddington during the eighteenth century. A summary is given here of selected material evidence for the tapestries’ cycle of display, repair and re-display, in order to illustrate some of the research questions provoked by the study. The key theme is: as material...

  16. Hausdorff dimensions in p-adic analytic groups

    Klopsch, Benjamin; Thillaisundaram, Anitha; Zugadi-Reizabal, Amaia
    Let G be a finitely generated pro-p group, equipped with the p-power series. The associated metric and Hausdorff dimension function give rise to the Hausdorff spectrum, which consists of the Hausdorff dimensions of closed subgroups of G. In the case where G is p-adic analytic, the Hausdorff dimension function is well understood; in particular, the Hausdorff spectrum consists of finitely many rational numbers closely linked to the analytic dimensions of subgroups of G. Conversely, it is a long-standing open question whether the finiteness of the Hausdorff spectrum implies that G is p-adic analytic. We prove that the answer is yes,...

  17. Screen industry collaboration: The Knock - producing fiction with Creative England / BFI

    Webb, Dominique
    Using a case study of independent film, this article explores the identity and working practices of the academic film producer, examining the relationship with both industry and academia. For the practitioner / academic, a complex set of conditions are to be negotiated in order to succeed in producing drama alongside academic duties as the two-way focus challenges the market demands of drama production. Non-commercial funding sources enable independent filmmakers authentic routes to finance and distribution deals with government agencies, however diminishing finance and regularly changing criteria results, at times in selective funding in a postcode lottery. Students benefit from the practitioner...

  18. The effect of downsizing on affective organisational commitment: a contextual proximity perspective

    Arzuaga, Susel
    Two assumptions constrain the literature on the effects of downsizing: that all survivors are affected to a similar extent and that the effect of layoffs can be extended to all workforce reductions. Furthermore, there is inconclusive evidence on the long-term effects of downsizing. I address these issues with two empirical studies on a multinational pharmaceutical company analysing the differential effect of four downsizing methods on affective commitment depending on the contextual proximity of employees. Study 1 shows decreasing levels of affective commitment among employees exposed to layoffs and closure of units (lower commitment corresponds to greater exposure) but the opposite...

  19. “I’m a stay at home businesswoman”: an insight into informal entrepreneurship in Jordan

    Mehtap, Salime; Ozmenekse, Leyla; Caputo, Andrea
    Purpose – Women and disadvantaged minorities within emerging and developing economies often resort to business activity within the informal economy as a way to overcome the various barriers and challenges to formal workforce participation. This paper aims to explore the characteristics, motives, barriers and challenges of female engagement in informal business activities in Jordan. Design/methodology/approach – The qualitative analysis employed in this paper is based upon empirical findings from semi-structured, in-depth interviews with 14 female informal entrepreneurs in Amman, Jordan. Findings – The study revealed that informal female entrepreneurs tend to be both opportunity and necessity driven. Generating profit and contributing to...

  20. Acts of communion: encountering taste in Reckless Sleeper's The Last Supper

    Westerside, Andrew; Pinchbeck, Michael
    This article explores the aesthetics, politics and dramaturgy of taste implicit in Reckless Sleepers' The Last Supper (2003). Seated at three long tables, set for dinner, the audience are served the last meal requests of inmates on death row whilst the company perform the last words of the famous or infamous, printed on rice paper, which they then eat. The piece explores both gustatory taste and the multi-sensory potential of serving food in performance and the ethics and politics of (mis)representation of real life events; the assassination of the Romanovs and Che Guevara proving to be the most unreliable narratives....

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