• L'uomo che dialogava con il coyote: una breve incursione sul tema «Joseph Beuys e sciamanesimo»

      Nicoletti, Martino; University of Derby, School of Art and Design (Edizioni Exòrma - Roma, 2011)
    • Laboratory measurement of time-dependent deformation properties of muddy siltstone.

      Hamza, Omar; Stace, Rod; University of Derby; University of Nottingham (Chamber of Mining Engineers of Turkey, 2017-04-14)
      This paper investigates the time-dependent deformation of argillaceous rocks, drawing principally on laboratory experiments carried out on muddy siltstone recovered from an open pit mine located in the midlands, UK. A series of creep tests were conducted on both intact and fractured rock samples to cover the two ultimate structural conditions of rock mass. Based on the creep test results, the relationship between axial strain and time under different axial and deviatoric stresses was investigated. The creep data of both intact and fractured rock samples was successfully fitted to Burgers model to represent creep behaviours of pre and post failure. The study provides improved representation of the time-dependent deformation properties of rock mass, which is essential to enhance geomechanical modelling of long-term stability of abandoned mines and for the application of underground disposal of radioactive waste.
    • Labour market information and social justice: a critical examination

      Staunton, Tom; Rogosic, Karla; University of Derby (Springer, 2021-03-04)
      Labour Market Information forms a central place in career practice and how individuals enact their careers. This paper makes use of Alvesson and Sandberg’s (Constructing research questions: doing interesting research. Sage, Thousand Oaks, 2013) methodology of focussing research on theoretical assumptions to construct a critical literature review on the relationship between Labour Market Information and career guidance. This paper presents six theoretical conceptions from the career literature: Contact, Rationalism, Nomad, Adaptability, Constructivist and Social Justice. We will argue for the need to move towards more constructivist understandings of Labour Market Information as well understandings linked to more critical understandings of the labour market.
    • Land matters

      James, Jeremy; O'Connor, Denis (2012)
      An illustrated catalogue documenting a site specific sculpture project based at Ilam Park, Staffordshire, England in 2012
    • Landscape, land and identity: a performative consideration

      Crouch, David; University of Derby (2012)
      This chapter considers ideas of land and identity processes through an original consideration of landscape. Following Taussig's argument that cultural meaning and identification are less constituted in institutionalised and ritualised signification than emergent in the performance of life, attention focuses upon the performative character of landscape and its relationality with land and identity.... Making land significant in life is considered through landscape in the notion of spacing. The notion of an everyday, gentle politics is introduced to the constitution of identities and feeling of land. Identities and values concerning land are produced relationally in the energy cracks between performativity and institutions, as the several investigations upon which this chapter draws testify.
    • Language development

      Nahmad-Williams, Lindy; Fenton, Carol; University of Derby; Sheffield Hallam University (Routledge, 2018-02-16)
    • Language model-based automatic prefix abbreviation expansion method for biomedical big data analysis

      Anjum, Ashiq; University of Derby (Elsevier, 2019-03-28)
      In biomedical domain, abbreviations are appearing more and more frequently in various data sets, which has caused significant obstacles to biomedical big data analysis. The dictionary-based approach has been adopted to process abbreviations, but it cannot handle ad hoc abbreviations, and it is impossible to cover all abbreviations. To overcome these drawbacks, this paper proposes an automatic abbreviation expansion method called LMAAE (Language Model-based Automatic Abbreviation Expansion). In this method, the abbreviation is firstly divided into blocks; then, expansion candidates are generated by restoring each block; and finally, the expansion candidates are filtered and clustered to acquire the final expansion result according to the language model and clustering method. Through restrict the abbreviation to prefix abbreviation, the search space of expansion is reduced sharply. And then, the search space is continuous reduced by restrained the effective and the length of the partition. In order to validate the effective of the method, two types of experiments are designed. For standard abbreviations, the expansion results include most of the expansion in dictionary. Therefore, it has a high precision. For ad hoc abbreviations, the precisions of schema matching, knowledge fusion are increased by using this method to handle the abbreviations. Although the recall for standard abbreviation needs to be improved, but this does not affect the good complement effect for the dictionary method.
    • The Language of SEND: Implications for the SENCO

      Codina, Geraldene; Wharton, Julie C.; University of Derby; University of Winchester (Routledge, 2021-04-22)
      The central tenet of this chapter is that language matters. Over the centuries as human beings have represented and categorised both themselves and others in different ways, so interpretations and the language of disability (physical and learning) shape-shifts altering through time (Goodey, 2016). The language of disability and the societal and political values which underpin it are therefore not cross-historical – let two or three generations pass and the labels associated with disability alter. Sometimes such changes in language usage can seem little more than semantic fashion or a professional challenge to keep up-to-date with. The language of disability is however more than fashion and political correctness (Mallett and Slater, 2014), for words gain their meaning from the manner in which they are used (Wittgenstein, 2009). This chapter argues the language of special education shapes SENCOs’ values, expectations, assumptions, responses and practice. Through an exploration of historical and current language usage, this chapter analyses the language of special education and the implications for the school community.
    • Laon and Cythna and The Revolt of Islam: revisions as transition.

      Whickman, Paul; University of Derby (Taylor & Francis, 2018-10-16)
      The enforced amendments made to Laon and Cythna following its withdrawal from publication in December 1817 are generally regarded as workmanlike and prudent, sacrificing aesthetic merit in the name of compromise and self-censorship. There remain, however, few detailed readings of these modifications that go beyond subjective responses. To this end, this article offers a reading of these revisions arguing that although some are indeed functional alterations, other amendments serve thematic and aesthetic ends. One of Shelley’s most common changes, that of changing the word ‘God’ to ‘Power’, is a case in point. Since a key theme of the poem is of the collusion between political and religious tyranny, Shelley’s alteration of ‘God’ to ‘Power’ makes this connection more explicit. From this, this article concludes that these revisions signal, analogously at the very least, a transitioning point in Shelley’s thought and career. Whereas Queen Mab (1813) refers explicitly to ‘God’, later works such as Prometheus Unbound (1820) settle upon the term ‘Power’. The fact that we see Shelley move from one to the other between Laon and Cythna and The Revolt of Islam is therefore significant.
    • "A large can of worms": Teachers' perceptions of young people's technology use

      Betts, Lucy R.; Spenser, Karin A.; Nottingham Trent University; Division of Psychology, Nottingham Trent University, Nottingham, UK; Division of Psychology, Nottingham Trent University, Nottingham, UK (IGI Global, 2015-04)
      Digital technology use is increasingly impacting on the lives of young people. To gain a deeper understanding of the perceived impact of young people's digital technology use, 2 focus groups were conducted with 14 teachers recruited from 2 schools. The focus groups were transcribed verbatim and analysed using Interpretative Phenomenological Analysis. The analysis revealed three themes: changing social dynamics, risk and (ir)responsible behaviour, and disclosure and reporting of cyber bullying. Participants discussed how digital technology was shaping young people's social identity and impacting on established norms when interacting in the social arena. A number of benefits were attributed to technology use but participants also recognised young people's naivety and tendency to anthropomorphise the internet. Finally, there was a perception that young people underreported their experiences of cyber bullying and some of the challenges faced when tackling cyber bullying were discussed.
    • Large eddy simulation of the flow past a circular cylinder at super-critical Reynolds numbers

      Ahmadi, Mohammad; Yang, Zhiyin; University of Derby (ASME, 2020-09)
      Turbulent flow past a circular cylinder at super-critical Reynolds numbers is simulated using large eddy simulation in this study. A novel combination of O- and H-grid structures is used to reduce mesh cells and, in turn, the computational cost. To investigate the influence of sub-grid scale (SGS) models on the accuracy of simulations, four different SGS models are applied to simulate the flow. In this study, the effect of mesh resolution near the wall on the accuracy of results is also evaluated by applying different y+ values at the wall. The results show that due to the complexity of the flow around the cylinder particularly at high Reynolds numbers, using very high resolution mesh near the cylinder wall, can not guarantee the accuracy of results and other parameters such as mesh resolutions at the top and bottom shear layers and the wake shortly behind the cylinder should be considered appropriately.
    • Large-eddy simulation of transition process in separated-reattached flows

      Yang, Zhiyin; University of Derby (WIT Press, 2011)
      It is important that scientists who perform experiments, researchers who develop computer codes, and those who carry out measurements on prototypes all communicate effectively. While computer models are now more reliable and better able to represent more realistic problems, experimental measurements need to be conditioned to the requirements of the computational models. Progress of engineering science depends on the orderly and progressive concurrent development of all three fields. This book contains the results of the latest in a biennial series of meetings to facilitate that communication and development that began in 1984. The papers presented at the conference included topics such as: Computational and Experimental Methods; Fluid Flow; Heat Transfer and Thermal Processes; Stress Analysis; Composite Materials; Detection and Signal Processing; Advances in Measurements and Data Acquisition; Multiscale Modelling; Ballistics; Railway Transport.
    • Large-eddy simulation of transitional flows using a co-located grid

      Langari, Mostafa; Yang, Zhiyin; Page, Gary J.; University of Sussex, Brighton, UK; University of Derby, UK (Taylor and Francis, 2013-07-12)
      A large-eddy simulation (LES) of a transitional separated flow over a plate with a semi-circular leading at low (<0.2%) and high (5.6%) free-stream turbulence (FST) has been performed, using a co-located grid with the Rhie–Chow pressure smoothing. A numerical trip is used to produce a high FST level and a dynamic subgrid-scale model is also employed in the current study. The entire transition process leading to breakdown to turbulence has been shown clearly by the flow visualisations using instantaneous spanwise vorticities, and the differences between the low- and high-FST cases are clearly visible. Coherent structures are also visualised using isosurfaces of the Q-criterion, and for the high-FST case, the spanwise-oriented quasi-two-dimensional rolls, which are clearly present in the low-FST case, are not visible anymore. Detailed quantitative comparisons between the present LES results and experimental data and the previous LES results at low FST using a staggered grid have been done and a good agreement has been obtained, indicating that the current LES using a co-located grid with pressure smoothing can also predict transitional flows accurately.
    • Large-eddy simulation: a glance at the past, a gaze at the present, a glimpse at the future

      Yang, Zhiyin; University of Derby, UK (2014-09-15)
      Large-Eddy Simulation (LES) was originally proposed for simulating atmospheric flows in the 1960s and has become one of the most promising and successful methodology for simulating turbulent flows with the improvement of computational power. It is now feasible to simulate complex engineering flows using LES. However, apart from the computing power, significant challenges still remain for LES to reach a level of maturity that brings this approach to the mainstream of engineering and industrial computations. This paper will describe briefly LES formalism first, present a quick glance at its history, review its current state focusing mainly on its applications in transitional flows and gas turbine combustor flows, discuss some major modelling and numerical challenges/issues that we are facing now and in the near future, finish with the concluding remarks.
    • Large-eddy simulation: Past, present and the future

      Yang, Zhiyin; University of Derby, Derby, UK (Elsevier, 2015-02)
      Large-eddy simulation (LES) was originally proposed for simulating atmospheric flows in the 1960s and has become one of the most promising and successful methodology for simulating turbulent flows with the improvement of computing power. It is now feasible to simulate complex engineering flows using LES. However, apart from the computing power, significant challenges still remain for LES to reach a level of maturity that brings this approach to the mainstream of engineering and industrial computations. This paper will describe briefly LES formalism first, present a quick glance at its history, review its current state focusing mainly on its applications in transitional flows and gas turbine combustor flows, discuss some major modelling and numerical challenges/issues that we are facing now and in the near future, and finish with the concluding remarks.
    • Large-scale Data Integration Using Graph Probabilistic Dependencies (GPDs)

      Zada, Muhammad Sadiq Hassan; Yuan, Bo; Anjum, Ashiq; Azad, Muhammad Ajmal; Khan, Wajahat Ali; Reiff-Marganiec, Stephan; University of Derby; University of Leicester (IEEE, 2020-12-28)
      The diversity and proliferation of Knowledge bases have made data integration one of the key challenges in the data science domain. The imperfect representations of entities, particularly in graphs, add additional challenges in data integration. Graph dependencies (GDs) were investigated in existing studies for the integration and maintenance of data quality on graphs. However, the majority of graphs contain plenty of duplicates with high diversity. Consequently, the existence of dependencies over these graphs becomes highly uncertain. In this paper, we proposed graph probabilistic dependencies (GPDs) to address the issue of uncertainty over these large-scale graphs with a novel class of dependencies for graphs. GPDs can provide a probabilistic explanation for dealing with uncertainty while discovering dependencies over graphs. Furthermore, a case study is provided to verify the correctness of the data integration process based on GPDs. Preliminary results demonstrated the effectiveness of GPDs in terms of reducing redundancies and inconsistencies over the benchmark datasets.
    • Larger ejaculate volumes are associated with a lower degree of polyandry across bushcricket taxa

      Vahed, Karim; University of Derby (The Royal Society, 2006-09-22)
      In numerous insects, including bushcrickets (Tettigoniidae), males are known to transfer substances in the ejaculate that inhibit the receptivity of females to further matings, but it has not yet been established whether these substances reduce the lifetime degree of polyandry of the female. The aim of this study was to test the hypothesis that larger ejaculate volumes should be associated with a lower degree of polyandry across tettigoniid taxa, controlling for male body mass and phylogeny. Data on ejaculate mass, sperm number, nuptial gift mass and male mass were taken primarily from the literature. The degree of polyandry for 14 species of European bushcrickets was estimated by counting the number of spermatodoses within the spermathecae of field-caught females towards the end of their adult lifespans. Data for four further species were obtained from the literature. Data were analysed by using both species regression and independent contrasts to control for phylogeny. Multiple regression analysis revealed that, as predicted, there was a significant negative association between the degree of polyandry and ejaculate mass, relative to male body mass, across bushcricket taxa. Nuptial gift size and sperm number, however, did not contribute further to interspecific variation in the degree of polyandry. A positive relationship was found, across bushcricket taxa, between relative nuptial gift size and relative ejaculate mass, indicating that larger nuptial gifts allow the male to overcome female resistance to accepting large ejaculates. This appears to be the first comparative evidence that males can manipulate the lifetime degree of polyandry of their mates through the transfer of large ejaculates.
    • Larger testes are associated with a higher level of polyandry, but a smaller ejaculate volume, across bushcricket species (Tettigoniidae)

      Vahed, Karim; Parker, Darren James; Gilbert, James D. J.; University of Derby (The Royal Society, 2010-11-10)
      While early models of ejaculate allocation predicted that both relative testes and ejaculate size should increase with sperm competition intensity across species, recent models predict that ejaculate size may actually decrease as testes size and sperm competition intensity increase, owing to the confounding effect of potential male mating rate. A recent study demonstrated that ejaculate volume decreased in relation to increased polyandry across bushcricket species, but testes mass was not measured. Here, we recorded testis mass for 21 bushcricket species, while ejaculate ( ampulla) mass, nuptial gift mass, sperm number and polyandry data were largely obtained from the literature. Using phylogenetic-comparative analyses, we found that testis mass increased with the degree of polyandry, but decreased with increasing ejaculate mass. We found no significant relationship between testis mass and either sperm number or nuptial gift mass. While these results are consistent with recent models of ejaculate allocation, they could alternatively be driven by substances in the ejaculate that affect the degree of polyandry and/or by a trade-off between resources spent on testes mass versus non-sperm components of the ejaculate.
    • Laser diagnostics of pulverized coal combustion in O2/N2 and O2/CO2 conditions: velocity and scalar field measurements

      Balusamy, Saravanan; Kamal, M. Mustafa; Lowe, Steven M.; Tian, Bo; Gao, Yi; Hochgreb, Simone; University of Cambridge (Springer Science and Business Media LLC, 2015-05-13)
      Optical diagnostic techniques are applied to a 21 kW laboratory-scale pulverized coal–methane burner to map the reaction zone during combustion, in mixtures with varying fractions of O2, N2 and CO2. Simultaneous Mie scatter and OH planar laser-induced fluorescence (PLIF) measurements have been carried out to study the effect of the oxidizer/diluent concentrations as well as the coal-loading rate. The spatial distribution of soot is captured using laser-induced incandescence (LII). Additionally, velocity profiles at selected axial locations are measured using the pairwise two-dimensional laser Doppler velocimetry technique. The OH PLIF images capture the reaction zones of pilot methane–air flames and the variation of the coal flame structure under various O2/CO2 compositions. Coal particles devolatilize immediately upon crossing the flame interface, so that the Mie scatter signal almost vanishes. Increasing coal-loading rates leads to higher reaction rates and shorter flames. LII measurements show that soot is formed primarily in the wake of remaining coal particles in the product regions. Finally, differences in the mean and RMS velocity field are explained by the combined action of thermal expansion and the changes in particle diameter between reacting and non-reacting flows.
    • Lattce Boltzmann mdoelling of natural convection of power-law fluids under wall vibrations

      Xie, Jianfei; Cao, Bing-Yang; Tsinghua University (Begellhouse, 2018-08)