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Non-Linear Control Algorithms For An Unmanned Surface Vehicle, Sanjay K. Sharma, Robert Sutton, Amit Motwani, Andy Annamalai Jan 2014

Non-Linear Control Algorithms For An Unmanned Surface Vehicle, Sanjay K. Sharma, Robert Sutton, Amit Motwani, Andy Annamalai

School of Engineering, Computing and Mathematics

No abstract provided.


A Novel Real-Time Non-Linear Wavelet-Based Model Predictive Controller For A Coupled Tank System, Kayode Owa, Sanjay Sharma, Robert Sutton Jan 2014

A Novel Real-Time Non-Linear Wavelet-Based Model Predictive Controller For A Coupled Tank System, Kayode Owa, Sanjay Sharma, Robert Sutton

School of Engineering, Computing and Mathematics

This article presents the design, simulation and real-time implementation of a constrained non-linear model predictive controller for a coupled tank system. A novel wavelet-based function neural network model and a genetic algorithm online non-linear real-time optimisation approach were used in the non-linear model predictive controller strategy. A coupled tank system, which resembles operations in many chemical processes, is complex and has inherent non-linearity, and hence, controlling such system is a challenging task. Particularly important is low-level control where often instability and oscillatory responses are observed. This article designs a wavelet neural network with high predicting precision and time–frequency localisation characteristics …


Cross-Shelf Exchange In The Northwestern Black Sea, Feng Zhou, Georgy Shapiro, Fred Wobus Jan 2014

Cross-Shelf Exchange In The Northwestern Black Sea, Feng Zhou, Georgy Shapiro, Fred Wobus

School of Biological and Marine Sciences

No abstract provided.


Overfishing And The Replacement Of Demersal Finfish By Shellfish: An Example From The English Channel., Carlotta Molfese, Doug Beare, Jason M. Hall-Spencer Jan 2014

Overfishing And The Replacement Of Demersal Finfish By Shellfish: An Example From The English Channel., Carlotta Molfese, Doug Beare, Jason M. Hall-Spencer

School of Biological and Marine Sciences

The worldwide depletion of major fish stocks through intensive industrial fishing is thought to have profoundly altered the trophic structure of marine ecosystems. Here we assess changes in the trophic structure of the English Channel marine ecosystem using a 90-year time-series (1920-2010) of commercial fishery landings. Our analysis was based on estimates of the mean trophic level (mTL) of annual landings and the Fishing-in-Balance index (FiB). Food webs of the Channel ecosystem have been altered, as shown by a significant decline in the mTL of fishery landings whilst increases in the FiB index suggest increased fishing effort and fishery expansion. …


Modelling Particle Residence Times In Agricultural River Basins Using A Sediment Budget Model And Fallout Radionuclide Tracers, Hugh G. Smith, William H. Blake, Alex Taylor Jan 2014

Modelling Particle Residence Times In Agricultural River Basins Using A Sediment Budget Model And Fallout Radionuclide Tracers, Hugh G. Smith, William H. Blake, Alex Taylor

School of Geography, Earth and Environmental Sciences

No abstract provided.


Deficiency Of Sphingosine-1-Phosphate Lyase Impairs Lysosomal Metabolism Of The Amyloid Precursor Protein, I Karaca, Iy Tamboli, K Glebov, J Richter, Lh Fell, Mo Grimm, Vj Haupenthal, T Hartmann, Mh Gräler, Echten-Deckert G Van, J Walter Jan 2014

Deficiency Of Sphingosine-1-Phosphate Lyase Impairs Lysosomal Metabolism Of The Amyloid Precursor Protein, I Karaca, Iy Tamboli, K Glebov, J Richter, Lh Fell, Mo Grimm, Vj Haupenthal, T Hartmann, Mh Gräler, Echten-Deckert G Van, J Walter

Peninsula Medical School

No abstract provided.


Going Native? Flower Use By Bumblebees In English Urban Gardens., Mick E. Hanley, Amanda J. Awbi, Miguel Franco Jan 2014

Going Native? Flower Use By Bumblebees In English Urban Gardens., Mick E. Hanley, Amanda J. Awbi, Miguel Franco

School of Biological and Marine Sciences

BACKGROUND AND AIMS: Although urban gardens provide opportunities for pollinators in an otherwise inhospitable environment, most garden plants are not native to the recipient biogeographical region and their value to local pollinators is disputed. This study tested the hypothesis that bumblebees foraging in English urban gardens preferentially visited sympatric Palaearctic-range plants over species originating outside their native range. METHODS: Twenty-seven surveys of flower availability and bumblebee visitation (Bombus spp.) were conducted over a 3-month summer period. Plants were categorized according to whether they were native British, Palaearctic or non-Palaearctic in origin. A phylogeny of the 119 plant species recorded was …


A Generalized Equilibriummodel For Predicting Daily To Interannual Shoreline Response, Kristen D. Splinter, Ian L. Turner, Mark A. Davidson, Patrick Barnard, Bruno Castelle, Joan Oltman-Shay Jan 2014

A Generalized Equilibriummodel For Predicting Daily To Interannual Shoreline Response, Kristen D. Splinter, Ian L. Turner, Mark A. Davidson, Patrick Barnard, Bruno Castelle, Joan Oltman-Shay

School of Biological and Marine Sciences

No abstract provided.


Development Of A Prototype Lateral Flow Immunoassay (Lfi) For The Rapid Diagnosis Of Melioidosis., Raymond L. Houghton, Dana E. Reed, Mark A. Hubbard, Michael J. Dillon, Hongjing Chen, Bart J. Currie, Mark Mayo, Derek S. Sarovich, Vanessa Theobald, Direk Limmathurotsakul, Gumphol Wongsuvan, Narisara Chantratita, Sharon J. Peacock, Alex R. Hoffmaster, Brea Duval, Paul J. Brett, Mary N. Burtnick, David P. Aucoin Jan 2014

Development Of A Prototype Lateral Flow Immunoassay (Lfi) For The Rapid Diagnosis Of Melioidosis., Raymond L. Houghton, Dana E. Reed, Mark A. Hubbard, Michael J. Dillon, Hongjing Chen, Bart J. Currie, Mark Mayo, Derek S. Sarovich, Vanessa Theobald, Direk Limmathurotsakul, Gumphol Wongsuvan, Narisara Chantratita, Sharon J. Peacock, Alex R. Hoffmaster, Brea Duval, Paul J. Brett, Mary N. Burtnick, David P. Aucoin

Peninsula Medical School

Burkholderia pseudomallei is a soil-dwelling bacterium and the causative agent of melioidosis. Isolation of B. pseudomallei from clinical samples is the "gold standard" for the diagnosis of melioidosis; results can take 3-7 days to produce. Alternatively, antibody-based tests have low specificity due to a high percentage of seropositive individuals in endemic areas. There is a clear need to develop a rapid point-of-care antigen detection assay for the diagnosis of melioidosis. Previously, we employed In vivo Microbial Antigen Discovery (InMAD) to identify potential B. pseudomallei diagnostic biomarkers. The B. pseudomallei capsular polysaccharide (CPS) and numerous protein antigens were identified as potential …


The Impact Of Changing Surface Ocean Conditions On The Dissolution Of Aerosol Iron, Matthew P. Fishwick, Peter N. Sedwick, Maeve C. Lohan, Paul J. Worsfold, Kristen N. Buck, Thomas M. Church, Simon J. Ussher Jan 2014

The Impact Of Changing Surface Ocean Conditions On The Dissolution Of Aerosol Iron, Matthew P. Fishwick, Peter N. Sedwick, Maeve C. Lohan, Paul J. Worsfold, Kristen N. Buck, Thomas M. Church, Simon J. Ussher

School of Geography, Earth and Environmental Sciences

The proportion of aerosol iron (Fe) that dissolves in seawater varies greatly and is dependent on aerosol composition and the physicochemical conditions of seawater, which may change depending on location or be altered by global environmental change. Aerosol and surface seawater samples were collected in the Sargasso Sea and used to investigate the impact of these changing conditions on aerosol Fe dissolution in seawater. Our data show that seawater temperature, pH, and oxygen concentration, within the range of current and projected future values, had no significant effect on the dissolution of aerosol Fe. However, the source and composition of aerosols …


Brain-Computer Music Interfacing: Interdisciplinary Research At The Crossroads Of Music, Science And Biomedical Engineering, Er Miranda Jan 2014

Brain-Computer Music Interfacing: Interdisciplinary Research At The Crossroads Of Music, Science And Biomedical Engineering, Er Miranda

School of Art, Design and Architecture

No abstract provided.


From Services To Civilian: The Geographies Of Veterans' Post-Military Lives, Agatha Herman, Richard Yarwood Jan 2014

From Services To Civilian: The Geographies Of Veterans' Post-Military Lives, Agatha Herman, Richard Yarwood

School of Geography, Earth and Environmental Sciences

No abstract provided.


Territorial Tactics: The Socio-Spatial Significance Of Private Policing Strategies In Cape Town, Till F. Paasche, Richard Yarwood, James D. Sidaway Jan 2014

Territorial Tactics: The Socio-Spatial Significance Of Private Policing Strategies In Cape Town, Till F. Paasche, Richard Yarwood, James D. Sidaway

School of Geography, Earth and Environmental Sciences

No abstract provided.


Retinal Nerve Fiber Layer Thickness In Glaucomatous Nepalese Eyes And Its Relation With Visual Field Sensitivity, Safal Khanal, Madhu Thapa, Lyne Racette, Richard Johnson, Pinakin Gunvant Davey, Mahesh Raj Joshi, Gauri Shankar Shrestha Jan 2014

Retinal Nerve Fiber Layer Thickness In Glaucomatous Nepalese Eyes And Its Relation With Visual Field Sensitivity, Safal Khanal, Madhu Thapa, Lyne Racette, Richard Johnson, Pinakin Gunvant Davey, Mahesh Raj Joshi, Gauri Shankar Shrestha

School of Health Professions

No abstract provided.


Oculometric Variations During Mind Wandering, R Grandchamp, C Braboszcz, A Delorme Jan 2014

Oculometric Variations During Mind Wandering, R Grandchamp, C Braboszcz, A Delorme

School of Psychology

A significant body of literature supports the contention that pupil size varies depending on cognitive load, affective state, and level of drowsiness. Here we assessed whether oculometric measures such as gaze position, blink frequency and pupil size were correlated with the occurrence and time course of self-reported mind-wandering episodes. We recorded the pupil size of two subjects engaged in a monotonous breath counting task while keeping their eyes on a fixation cross. This task is conducive to producing mind-wandering episodes. Each subject performed ten 20-min sessions, for total duration of about 4 h. Subjects were instructed to report spontaneous mind-wandering …


Non-Intrusive Continuous User Authentication For Mobile Devices, Sevasti Karatzouni Jan 2014

Non-Intrusive Continuous User Authentication For Mobile Devices, Sevasti Karatzouni

School of Engineering, Computing and Mathematics Theses

The modern mobile device has become an everyday tool for users and business. Technological advancements in the device itself and the networks that connect them have enabled a range of services and data access which have introduced a subsequent increased security risk. Given the latter, the security requirements need to be re-evaluated and authentication is a key countermeasure in this regard. However, it has traditionally been poorly served and would benefit from research to better understand how authentication can be provided to establish sufficient trust. This thesis investigates the security requirements of mobile devices through literature as well as acquiring …


Steps Toward A Shared Governance Response For Achieving Good Environmental Status In The Mediterranean Sea, Sergio Cinnirella, R Sarda, Suarez De Vivero J Luis, Ruth Brennan, Alberto Barausse, John Icely, Tiziana Luisetti, David March, Carla Murciano, Alice Newton, T O'Higgins, Luca Palmeri, Maria Giovanna Palmieri, Pascal Raux, Sian Rees, J Albaiges, Nicola Pirrone, Kerry Turner Jan 2014

Steps Toward A Shared Governance Response For Achieving Good Environmental Status In The Mediterranean Sea, Sergio Cinnirella, R Sarda, Suarez De Vivero J Luis, Ruth Brennan, Alberto Barausse, John Icely, Tiziana Luisetti, David March, Carla Murciano, Alice Newton, T O'Higgins, Luca Palmeri, Maria Giovanna Palmieri, Pascal Raux, Sian Rees, J Albaiges, Nicola Pirrone, Kerry Turner

School of Biological and Marine Sciences

No abstract provided.


Overestimated Crash Risks Of Young And Elderly Drivers, Jj Rolison, S Moutari, Pj Hewson, E Hellier Jan 2014

Overestimated Crash Risks Of Young And Elderly Drivers, Jj Rolison, S Moutari, Pj Hewson, E Hellier

School of Engineering, Computing and Mathematics

BACKGROUND: Young and elderly drivers are reported to have markedly greater crash rates than drivers of other ages, but they travel less frequently and represent a minority of road users. Consequently, many crashes involving young or elderly drivers also involve drivers of middle age ranges who travel more frequently. PURPOSE: To examine crash rates of young and elderly drivers, controlling for ages of all drivers involved in collisions. METHODS: A retrospective longitudinal study conducted on population-wide two-vehicle crashes reported in Great Britain from 2002 through 2010 for driver age ranges (17-20, 21-29, 30-39, 40-49, 50-59, 60-69, ≥70 years) and individual …


Combined Effect Of Rotation And Topography On Shoaling Oceanic Internal Solitary Waves, Roger Grimshaw, Chuncheng Guo, Karl Helfrich, Vasiliy Vlasenko Jan 2014

Combined Effect Of Rotation And Topography On Shoaling Oceanic Internal Solitary Waves, Roger Grimshaw, Chuncheng Guo, Karl Helfrich, Vasiliy Vlasenko

School of Biological and Marine Sciences

No abstract provided.


Looking Forward Through The Past. Identification Of Fifty Priority Research Questions In Palaeoecology., A Seddon, A Mackay, A Baker, Et Al Jan 2014

Looking Forward Through The Past. Identification Of Fifty Priority Research Questions In Palaeoecology., A Seddon, A Mackay, A Baker, Et Al

School of Geography, Earth and Environmental Sciences

Priority question exercises are becoming an increasingly common tool to frame future agendas in conservation and ecological science. They are an effective way to identify research foci that advance the field and that also have high policy and conservation relevance. To date, there has been no coherent synthesis of key questions and priority research areas for palaeoecology, which combines biological, geochemical and molecular techniques in order to reconstruct past ecological and environmental systems on time-scales from decades to millions of years. We adapted a well-established methodology to identify 50 priority research questions in palaeoecology. Using a set of criteria designed …


Functional Diversity Of Marine Ecosystems After The Late Permian Mass Extinction Event, Wj Foster, Rj Twitchett Jan 2014

Functional Diversity Of Marine Ecosystems After The Late Permian Mass Extinction Event, Wj Foster, Rj Twitchett

School of Geography, Earth and Environmental Sciences

The Late Permian mass extinction event was the most severe such crisis of the past 500 million years and occurred during an episode of global warming. It is assumed to have had significant ecological impact, but its effects on marine ecosystem functioning are unknown and the patterns of marine recovery are debated. We analysed the fossil occurrences of all known Permian-Triassic benthic marine genera and assigned each to a functional group based on their inferred life habit. We show that despite the selective extinction of 62-74% of marine genera there was no significant loss of functional diversity at the global …


Parameterization Of Pharmaceutical Emissions And Removal Rates For Use In Uk Predictive Exposure Models: Steroid Estrogens As A Case Study, Jd Heffley, Sdw Comber, Bw Wheeler, Ch Redshaw Jan 2014

Parameterization Of Pharmaceutical Emissions And Removal Rates For Use In Uk Predictive Exposure Models: Steroid Estrogens As A Case Study, Jd Heffley, Sdw Comber, Bw Wheeler, Ch Redshaw

School of Geography, Earth and Environmental Sciences

Using local population characteristics and prescription data to predict pharmaceutical concentrations in sewage influent and effluent.


Insulin Acutely Improves Mitochondrial Function Of Rat And Human Skeletal Muscle By Increasing Coupling Efficiency Of Oxidative Phosphorylation., Raid B. Nisr, Charles Affourtit Jan 2014

Insulin Acutely Improves Mitochondrial Function Of Rat And Human Skeletal Muscle By Increasing Coupling Efficiency Of Oxidative Phosphorylation., Raid B. Nisr, Charles Affourtit

School of Biomedical Sciences

Insulin is essential for the regulation of fuel metabolism and triggers the uptake of glucose by skeletal muscle. The imported glucose is either stored or broken down, as insulin stimulates glycogenesis and ATP synthesis. The mechanism by which ATP production is increased is incompletely understood at present and, generally, relatively little functional information is available on the effect of insulin on mitochondrial function. In this paper we have exploited extracellular flux technology to investigate insulin effects on the bioenergetics of rat (L6) and human skeletal muscle myoblasts and myotubes. We demonstrate that a 20-min insulin exposure significantly increases (i) the …


Emotional Dissonance Among Uk Animal Technologists: Evidence, Impact And Management Implications, Keith Davies Jan 2014

Emotional Dissonance Among Uk Animal Technologists: Evidence, Impact And Management Implications, Keith Davies

Plymouth Business School Theses

The care and welfare of laboratory animals born, nurtured and experimented upon within a research facility is the primary function for animal technologists. While discharging these responsibilities the emotional needs of the carers require consideration, balancing their perceptions of animal care against the purpose for which the animals exist. As little published information is available on the emotional challenges faced by UK animal technologists, this thesis redresses the balance, exploring the subject in detail through qualitative and quantitative methods. Emotional dissonance, often expressed as felt emotion versus enacted emotion, is a negative output from Emotional Labour. Animal technologists operate in …


Recovery Of A Temperate Reef Assemblage In A Marine Protected Area Following The Exclusion Of Towed Demersal Fishing, Emma V. Sheehan, Timothy F. Stevens, Sarah C. Gall, Sophie L. Cousens, Martin J. Attrill Dec 2013

Recovery Of A Temperate Reef Assemblage In A Marine Protected Area Following The Exclusion Of Towed Demersal Fishing, Emma V. Sheehan, Timothy F. Stevens, Sarah C. Gall, Sophie L. Cousens, Martin J. Attrill

School of Biological and Marine Sciences

No abstract provided.


Impact Of Urea Price Change On The Economic Optimum Level Of N Fertilizer Use In Hyv Rice And Its Yield In Bangladesh, S Rahman, Mmh Kazal, St Hossain Dec 2013

Impact Of Urea Price Change On The Economic Optimum Level Of N Fertilizer Use In Hyv Rice And Its Yield In Bangladesh, S Rahman, Mmh Kazal, St Hossain

School of Geography, Earth and Environmental Sciences

The study estimates the impact of change in urea price on the economic optimum level of N fertilizer use in HYV rice and its yield in Bangladesh using a large set of experimental data of BRRI from 15 regions covering an 11 year period (2001–2011). Results revealed that the level of N fertilizer used in experiments to increase HYV rice yield was far lower than the economic optimum level in Aman and Boro seasons but higher in Aus season. The discrepancy was highest for HYV Boro rice closely followed by HYV Aman rice. Simulation exercise revealed that an increase in …


Novel Insights Into Pancreatic Β-Cell Glucolipotoxicity From Real-Time Functional Analysis Of Mitochondrial Energy Metabolism In Ins-1e Insulinoma Cells., Jonathan Barlow, Charles Affourtit Dec 2013

Novel Insights Into Pancreatic Β-Cell Glucolipotoxicity From Real-Time Functional Analysis Of Mitochondrial Energy Metabolism In Ins-1e Insulinoma Cells., Jonathan Barlow, Charles Affourtit

School of Biomedical Sciences

High circulating glucose and non-esterified (free) fatty acid levels can cause pancreatic β-cell failure. The molecular mechanisms of this β-cell glucolipotoxicity are yet to be established conclusively. In the present paper we report on the involvement of mitochondrial dysfunction in fatty-acid-induced β-cell failure. We have used state-of-the-art extracellular flux technology to functionally probe mitochondrial energy metabolism in intact INS-1E insulinoma cells in real-time. We show that 24-h palmitate exposure at high glucose attenuates the glucose-sensitivity of mitochondrial respiration and lowers coupling efficiency of glucose-stimulated oxidative phosphorylation. These mitochondrial defects coincide with an increased level of ROS (reactive oxygen species), impaired …


The Effect Of Age On Interhemispheric Transfer Time: An Event Related Potential Study, Amy Boyson Dec 2013

The Effect Of Age On Interhemispheric Transfer Time: An Event Related Potential Study, Amy Boyson

The Plymouth Student Scientist

The present study sought to investigate the effects of aging on interhemispheric transfer time (IHTT). Poffenberger (1912) devised a behavioural paradigm thought to be a measure of IHTT. In this paradigm IHTT is estimated by calculating the crossed-uncrossed difference (CUD); the difference in speed of response between responses made in response to stimuli contralateral to responding hand (crossed) and those made by hands ipsilateral to the stimuli (uncrossed). IHTT can also be estimated through event related potentials (ERPs) by calculating latency differences between the waveforms over the ipsilateral and contralateral hemispheres. Results from previous experiments comparing younger and older participants …


Transfer-Free Growth Of Graphene On Sio2 Insulator Substrate From Sputtered Carbon And Nickel Films, Genhua Pan, Bing Li, Mark Heath, David Horsell, M. Lesley Wears, La Taan, Shakil Awan Dec 2013

Transfer-Free Growth Of Graphene On Sio2 Insulator Substrate From Sputtered Carbon And Nickel Films, Genhua Pan, Bing Li, Mark Heath, David Horsell, M. Lesley Wears, La Taan, Shakil Awan

School of Engineering, Computing and Mathematics

No abstract provided.


The Implementation Of Nice Guidance On Venous Thromboembolism Risk Assessment And Prophylaxis: A Before- After Observational Study To Assess The Impact On Patient Safety Across Four Hospitals In England., A Bateman, Wr Sheaff, S Child, O Boiko, Oc Ukoumunne, T Nokes, A Copplestone, C Gericke Dec 2013

The Implementation Of Nice Guidance On Venous Thromboembolism Risk Assessment And Prophylaxis: A Before- After Observational Study To Assess The Impact On Patient Safety Across Four Hospitals In England., A Bateman, Wr Sheaff, S Child, O Boiko, Oc Ukoumunne, T Nokes, A Copplestone, C Gericke

Peninsula Medical School

Introduction: Venous thromboembolism (VTE) is a major cause of morbidity and mortality in hospitalised patients. VTE prevention has been identified as a major health need internationally to improve patient safety. A National Institute for Health and Clinical Excellence (NICE) guideline was issued in February 2010. Its key priorities were to assess patients for risk of VTE on admission to hospital, assess patients for bleeding risk and evaluate the risks and benefits of prescribing VTE prophylaxis. Objectives: To evaluate the implementation of NICE guidance and its impact on patient safety. Design: Before and after observational study design was used to investigate …