cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Nonlinear wave equations, Clifford analysis, and the stability of solitary waves
Creators: name: BURCHELL, TIMOTHY JOHN
Publisher: name: University of Surrey
Year: 2022
Subjects: Evans function
Solitary waves
Hamiltonian
Lazutkin invariant
Clifford algebra
Transverse instability
Wave Equations

description: This project studies the linear stability of solitary wave solutions to Hamiltonian PDEs. It seeks
description: to do this by formulating the linear stability problem in terms of the Evans function, the zeroes
description: of which relate to eigenvalues of the stability problem. The objective is to derive a formula that
description: can be used to prove instability by using geometric properties of the solitary wave. This means
description: that instability can be deduced without having an exact expression for the solitary wave. The
description: approach to achieving this starts by introducing a new class of Hamiltonian PDEs based on a
description: Dirac-type operator that can model a variety of wave equations. The Dirac-type operator allows
description: for a connection to Clifford algebras to be made. Then, Evans functions are constructed for the
description: cases of one and two space dimensions. The main result is expressions for the second derivatives
description: of these Evans functions using 3 properties of the underlying solitary wave equation: transversality,
description: momentum and asymptotics of the solitary wave. The theory is then illustrated on a simple example
description: in each case.
Supporting organizational culture change by identifying, articulating, and trouble-shooting core values
Creators: name: Woodley, Louise
name: Bertipaglia, Chiara
Publisher: name: Zenodo
Year: 2020
Subjects: CSCCE
Science of Team Science conference 2020
culture change
core values
values statements
Bolman and Deal framework

description: This presentation was given as a virtual workshop at the Science of Team Science 2020 conference. It describes a process designed by Lou Woodley to articulate core values - based on identifying and describing positive behaviors first before identifying representative values and defining them. It also includes a description of Bolman and Deal's 4 frames which can be used to consider what hinders the realization of core values within an organization.
ENHANCING ENERGY ACCESS IN UGANDA'S INDUSTRIAL PARKS: A Data-driven Approach Using Energy Access Explorer
Creators: name: Kasolo, Nickson
Publisher: name: Zenodo
Year: 2024

description: This presentation constitutes the outcome of a three-weeks capacity building activity on Energy Access Explorer (EAE) as part of the 2024 Energy Modelling Platform - Global workshop. The authors collected input data, processed, and integrated data into EAE Uganda through EAE’s content management system, created a front-end version of EAE Uganda, and developed different analytical scenarios using the data for Uganda in order to explore pathways leading to the achievement of data-informed, integrated, and inclusive energy planning. The results of this analysis are not conclusive, but rather the output of experimentation with the model and thus only indicative. You may contact the author for more information and/or questions about the methodology, limitations, and follow-up activities of this study.
Exportschlager Krankenpfleger – Filipin@s wollen ihre (Über)Lebenschancen als Krankenpfleger/innen im Ausland verbessern
Creators: name: Agana, Rey
Publisher: name: südostasien – Zeitschrift für Politik • Kultur • Dialog
Year: 2018

description: Interessanterweise gibt es seit dem Fall der Finanzriesen in New York und in anderen Metropolen Ende 2008 in den Philippinen bis jetzt kaum Anzeichen für eine große wirtschaftliche Erschütterung. Lokale Einkaufszentren florieren und sind gefüllt mit unbeirrten Käufern und sogenannten mall rats. Für unbekümmerte Filipin@s verläuft der Lebensalltag wie gewöhnlich und es gibt nichts, was sie davon abhält, sich in den klimatisierten und lebhaften Einkaufszentren zu vergnügen. Ob sie auch kaufen oder nicht, ist eine andere Frage. Eines aber steht fest: Die globale Finanzkrise ist wohl die letzte Sorge der Durchschnittsbevölkerung
description: südostasien – Zeitschrift für Politik • Kultur • Dialog, Bd. 25 Nr. 3 (2009): 1-2-3, letzte Chance vorbei? Lebenschancen in Südostasien
Dimensional stability of fibre-reinforced deployable booms for space optics applications
Creators: name: De Zanet, Gianluca
Publisher: name: University of Surrey
Year: 2023

description: Thin carbon fibre reinforced polymer (CFRP) tape-springs are attractive structures for
description: use in space-based instruments because of their compact stowed configuration, highly
description: repeatable unfolding and relatively high dimensional stability. Potentially, high-accuracy
description: applications such as optical telescopes might benefit from this technology. In the era of
description: miniaturisation in the space industry and given the relevance of the Earth Observation
description: (EO) sector, the launch of multiple smaller spacecraft equipped with deployable payloads
description: would provide a cost-effective solution for frequent coverage.

description:

description: Within this thesis, the dimensional stability of deployable optics in the space thermal
description: environment is investigated. In the past, some relevant missions employing deployable
description: booms experienced significant thermally-induced disturbances which might be particularly
description: detrimental for satellite imagery. The thermo-mechanical properties driving the
description: thermo-structural response have been identified by implementing screening methods
description: based on Elementary Effects (EE) into the Finite Element (FE) model of the telescope. The
description: novel implementation of this statistical approach for the analysis of laminates has been
description: also supported by analytical examples, and has proven to be fast and versatile. The most
description: influential parameters have been found to depend strongly on the stacking sequence.

description:

description: Then, the FE model has been updated with coefficients of thermal expansion (CTE)
description: found experimentally using strain gauge techniques, which are inexpensive and adjustable
description: for a variety of materials and specimens. Different orbit scenarios and illumination conditions
description: have been also explored. The suitability of tape-springs for a telescope has been found highly
description: influenced by the thermo-optical properties, which ultimately depend on the surface finish.

description:

description: The mock-up of the telescope in the deployed configuration has been tested following
description: an interferometric approach. A 3 degrees of freedom (3-DoF) interferometer has been
description: developed by using commercial-off-the-shelf (COTS) optical components, hence reducing
description: the costs considerably. The reconstruction of axial displacements and relative tilts, with
description: a resolution of 10−9 m and 10−6 rad respectively, has been performed
description: by analysing the interference fringe pattern moving on the CMOS sensor. Uncoated and coated
description: configurations have been tested, showing approximately a 50% decrease in the maximum axial
description: displacements.
Unruhe im Jade Valley – Weil ihre Hypotheken verkauft worden sind, droht einigen Menschen in Davao jetzt die Obdachlosigkeit
Creators: name: Reckordt, Michael
Publisher: name: südostasien – Zeitschrift für Politik • Kultur • Dialog
Year: 2018

description: Jade Valley, so lautet der malerische Name der Siedlung in der Subdivision Tigatto von Davao City. Die Lage ist ebenfalls so idyllisch wie der Name, hier im Norden der Millionenstadt, wo die Natur dominiert und der Davao River sich seinen Weg in Richtung Golf von Davao sucht. Doch dieser Fluss trübt die Idylle ein wenig. Denn schlammige Zufahrtsstraßen und deutliche Spuren von Überschwemmungen an den Häusern gehören ebenso zum Jade Valley, wie die malerische Kulisse.
description: südostasien – Zeitschrift für Politik • Kultur • Dialog, Bd. 25 Nr. 3 (2009): 1-2-3, letzte Chance vorbei? Lebenschancen in Südostasien
Krieg gegen Kinder – Die Menschenrechtsorganisation CHR untersucht Auftragsmorde an Straßenkindern
Creators: name: Werning, Rainer
Publisher: name: südostasien – Zeitschrift für Politik • Kultur • Dialog
Year: 2018

description: In der südphilippinischen Stadt Davao wurden im vergangenen Jahrzehnt über 800 Menschen, meist Kinder und Jugendliche, von Todesschwadronen ermordet. Die Stadtoberen geben sich ahnungslos und beschwören einzig »law and order«.
description: südostasien – Zeitschrift für Politik • Kultur • Dialog, Bd. 25 Nr. 3 (2009): 1-2-3, letzte Chance vorbei? Lebenschancen in Südostasien
On the reversibility of parasitism: adaptation to a free-living lifestyle via gene acquisitions in the diplomonad Trepomonas sp. PC1
Creators: name: Xu, Feifei
name: Jerlström-Hultqvist, Jon
name: Kolisko, Martin
name: Simpson, Alastair G. B.
name: Roger, Andrew J.
name: Svärd, Staffan G.
name: Andersson, Jan O.
Publisher: name: BioMed Central
Year: 2018

description: Background: It is generally thought that the evolutionary transition to parasitism is irreversible because it is associated with the loss of functions needed for a free-living lifestyle. Nevertheless, free-living taxa are sometimes nested within parasite clades in phylogenetic trees, which could indicate that they are secondarily free-living. Herein, we test this hypothesis by studying the genomic basis for evolutionary transitions between lifestyles in diplomonads, a group of anaerobic eukaryotes. Most described diplomonads are intestinal parasites or commensals of various animals, but there are also free-living diplomonads found in oxygen-poor environments such as marine and freshwater sediments. All these nest well within groups of parasitic diplomonads in phylogenetic trees, suggesting that they could be secondarily free-living. Results: We present a transcriptome study of Trepomonas sp. PC1, a diplomonad isolated from marine sediment. Analysis of the metabolic genes revealed a number of proteins involved in degradation of the bacterial membrane and cell wall, as well as an extended set of enzymes involved in carbohydrate degradation and nucleotide metabolism. Phylogenetic analyses showed that most of the differences in metabolic capacity between free-living Trepomonas and the parasitic diplomonads are due to recent acquisitions of bacterial genes via gene transfer. Interestingly, one of the acquired genes encodes a ribonucleotide reductase, which frees Trepomonas from the need to scavenge deoxyribonucleosides. The transcriptome included a gene encoding squalene-tetrahymanol cyclase. This enzyme synthesizes the sterol substitute tetrahymanol in the absence of oxygen, potentially allowing Trepomonas to thrive under anaerobic conditions as a free-living bacterivore, without depending on sterols from other eukaryotes. Conclusions: Our findings are consistent with the phylogenetic evidence that the last common ancestor of diplomonads was dependent on a host and that Trepomonas has adapted secondarily to a free-living lifestyle. We believe that similar studies of other groups where free-living taxa are nested within parasites could reveal more examples of secondarily free-living eukaryotes.
Chancenlos im Krieg – Vertriebene in Mindanao können nicht nach Hause zurückkehren
Creators: name: Liwag Kotte, Emmalyn
Publisher: name: südostasien – Zeitschrift für Politik • Kultur • Dialog
Year: 2018

description: Die philippinische Armee stellte am 23. Juli 2009 die seit August 2008 laufende Militäroffensive gegen die »Moro Islamische Befreiungsfront« (MILF) auf der Insel Mindanao ein. Als Auslöser der einseitigen Entscheidung sieht Rafael Seguis, Vorsitzender des Friedensverhandlungskomitees der philippinischen Regierung, die steigende Zahl der Binnenflüchtlinge (Internally Displaced Persons -IDPs) in der Provinz Maguindanao und die sehr schlechten Lebensbedingungen in den Flüchtlingslagern.
description: südostasien – Zeitschrift für Politik • Kultur • Dialog, Bd. 25 Nr. 3 (2009): 1-2-3, letzte Chance vorbei? Lebenschancen in Südostasien
Modelling star clusters with potential escapers
Creators: name: Claydon, Ian
Publisher: name: University of Surrey
Year: 2020

description: By investigating the behaviour of potential escapers in evolutionary models of globular clusters, I make a prediction for the kinematics in the outskirts and develop a simple, static model which includes the effect s of potential escapers and can be fit to observational data. I investigate the behaviour of potential escapers in N-body models to determine if a unique signal exists that can discriminate between alternative theories to explain the peculiarities in observations of GCs outskirts. By running a series of N-body simulations of globular clusters, with varying IMF, galactic potential and orbital eccentricity, I make a prediction for the lower limit of the velocity dispersion profile the velocity dispersion anisotropy and the rotation in the cluster if the outskirts dynamics are primarily determined by the existence of PEs. And as these observables depend on the galactic potential, can also provide a means of inferring properties of the host galaxy. Further to this, I begin a method of including the effects of potential escapers (PEs) as a static, distribution function based model, which can be quickly fit to observational data to scan a wide range of parameters. This model, the spherical potential escaper stitched model (SPES), is able to accurately fit the velocity dispersion and density profiles in outskirts of MW GCs where existing models can fail. This is especially pertinent with the wealth of new data of stars in the outskirts of GCs provided by the Gaia mission. Additionally, it is useful to include the effects of the galactic potential in the model for two reasons 1) to be able to fit on the slope of the enclosed mass profile 2) to accurately reproduce the critical energy of the system. Therefore I present a method of including both the effects of PEs and the galactic potential in the aspherical potential escapers stitched model (APES).
Optimising Audio Reproduction in the Domestic Environment Incorporating Ad-Hoc Devices
Creators: name: CIECIURA, CRAIG ROBERT
name: Cieciura, Craig
Publisher: name: University of Surrey
Year: 2022

description: To experience loudspeaker-based immersive audio at home, listeners are currently
description: required to own surround-sound systems, otherwise they are relegated to receiving
description: a compromised experience. A study was undertaken, revealing low ownership by
description: households of surround-sound systems (11.5%) and soundbars (16.9%). Ownership
description: was higher for portable audio-capable devices, including wireless loudspeakers (17.5%),
description: tablets (66.3%) and mobile phones (82.5%). This motivated development of techniques
description: to optimise reproduction for the unique listener and loudspeaker arrangements which
description: exist in homes, using those portable, ad-hoc devices.
description: First, we examined a range of approaches through which ad-hoc devices could be used
description: to improve listening experiences. This was achieved through an exploratory listening
description: experiment, performed via creation of a representative playback environment, a highquality
description: and format-agnostic dataset of programme items, and a broad set of novel
description: rendering approaches validated by industry experts. The experiment revealed that
description: repositioning non-dialogue elements of the programmes, whilst restricting dialogue to
description: the main loudspeakers, had the most consistent positive effect. This was observed most
description: prominently for attributes related to spatial extent, such as envelopment.
description: Next, a system to automatically optimise listener experience for arbitrary arrangements
description: of installed and ad-hoc loudspeakers was developed. Requiring minimal producer input,
description: the system operates by repositioning objects to maximise perceived envelopment across
description: multiple listening positions. Whilst validation of the envelopment model demonstrated
description: only moderate correlation, when compared to VBAP, stereo and 5.0, using stereo plus
description: one to eight ad-hoc devices, the envelopment-system outputs were typically significantly
description: preferred to VBAP and in 75% of cases to stereo — when rendering to stereo plus
description: two, or more, ad-hoc devices. The outputs were only ever less preferred to 5.0 in the
description: most challenging scenarios and when using few ad-hoc devices. This demonstrates
description: that perceptually motivated reproduction approaches can facilitate improved listening
description: experiences, using devices which home users often already own.
Privacy fit in open-plan offices : its appraisal, associated outcomes & contextual factors.
Creators: name: Weber, Clara
Publisher: name: University of Surrey
Year: 2020

description: Poor work privacy represents a frequently reported issue in open office environments,yet relatively little is known about its consequences. In addition, prior research has limitations including weak operationalisations and measures of privacy. Therefore, this thesis developed a new work privacy measure and examined the adverse effects of poor work privacy on workers’ well-being. The roles of coping appraisal and contextual factors in this relationship were explored to inform future preventative steps. Study 1 (n = 30) qualitatively explored different scenarios of poor work privacy in an open-plan office context for the development of a new measure of privacy fit. Three dimensions of poor work privacy have been identified: acoustical and visual stimulation,interruptions, and confidentiality. Study 2 quantitatively tested (2.A n = 195) and confirmed (2.B n = 109) the factor structure of the new privacy fit measure in two open-plan office worker samples. Four dimensions were identified: conversation confidentiality, task confidentiality, visual/acoustical stimulation, and interruptions. The measure concluded with 12 items, good model fit, reliability, and construct validity. Study 3 (n = 220) employed the newly developed measure and quantitatively examined stress-related consequences of poor privacy fit in an open-plan office worker sample. Poor privacy fit was associated with dissatisfaction, stress, and fatigue. Coping appraisal was found to mediate these relationships. Study 4 (n = 61) quantitatively demonstrated in a longitudinal study that a move to an activity-based office influenced workers’ privacy fit, coping appraisal, and stress-related outcomes (satisfaction, stress, and fatigue). Study 5 (n = 22) qualitatively explored contextual factors in the activity-based Office that support or hinder privacy fit. Four factors were identified: the physical environment (e.g. variety of settings) and the social environment (e.g. social norms), the job (e.g. role conflict), and the self (e.g. self-awareness). This thesis developed a new measure of work privacy and confirmed that privacy fit has an impact on workers’ well-being. The thesis demonstrated the methodological benefit of considering individuals’ appraisal, and the importance of contextual factors in privacy regulation.
Temporal Dynamics in Human Circulating Metabolites
Creators: name: Chowdhury, Namrata Roy
Publisher: name: University of Surrey
Year: 2023

description: Daily, 24-h rhythms exist in nearly all physiological and behavioural processes, including metabolism. Research shows clear links between metabolism and the circadian system. Drivers for circulating metabolite rhythms can be endogenous ‘circadian’ or endogenously and exogenously derived ‘diurnal’ rhythms. The present studies aimed to investigate the endogenous and exogenous contribution to plasma metabolite profiles by characterising both circadian and diurnal metabolite rhythms using ‘constant routine (CR)’ or ‘entrained protocols’, respectively.

description:

description: Firstly, a 40-h CR protocol in young, healthy participants (n = 30, 50% females) was used to reveal circadian rhythms in plasma metabolites. Metabolites from five chemical classes; amino acids, biogenic amines, acylcarnitines, glycerophospholipids and sphingolipids were measured using targeted LC-MS/MS (liquidchromatography-massspectroscopy) metabolomics. A subsequent study set out to elucidate ‘diurnal rhythms’ from ‘entrained protocols’ (n = 24 healthy, young participants, 50% females). Comparison between the CR and entrained protocol enabled assessment of the acute effect of exogenous factors (timed meals, sleep and fasting) on metabolite profiles. Finally, a pilot study in eight healthy young participants (3 females) was employed across three in-laboratory study days in both summer and winter to assess day-day consistency and seasonal differences in metabolites.

description:

description: The results demonstrated that most metabolites (76% (n = 96/127)) exhibited sex differences in their levels, influenced by the metabolite class irrespective of rhythmicity. Only a small proportion of metabolites (27% (n = 34/127)) exhibited circadian rhythmicity. By contrast, most metabolites (75%) in exhibited diurnal rhythms. Amino acid profiles were acutely affected by timed meals, whilst most metabolite levels declined during fasting and sleep. The final study revealed that plasma metabolite levels and rhythms were mostly consistent across three days and between summer and winter. The findings from this thesis highlight the importance of acknowledging sex, time-of-day, feed/fasting, sleep/wake status and season as variables capable of affecting circulating metabolites.
Hunting for aquatic bladder carcinogens
Creators: name: DIANA, MARINE
Publisher: name: University of Surrey
Year: 2021
Subjects: Disinfection byproducts
Halofuranones
Furans
Haloquinones
Halofuroic acids
Bladder Cancer

description: Epidemiological studies have consistently found an association between the consumption of chlorinated water and an increased risk of developing bladder cancer. This risk has been attributed to disinfection byproducts (DBPs) – undesirable products formed during the disinfection of drinking water – but the individual compounds responsible remain unknown. This project aims at assessing which individual or groups of DBPs may be implicated in the bladder cancer association. By comparing the structures of bladder carcinogens and probable DBPs in a review of the literature (published in Water Research), halocyclopentenoic acids, halofuranones and haloquinones were selected as potentially critical DBP candidates. Eleven phenolic compounds previously used as surrogates for natural organic matter in drinking water were chlorinated under 91 different conditions (different precursors, pH, chlorine and bromide doses). UV spectroscopy was used as a screening method to identify which conditions lead to the formation of stable UV-absorbing DBPs. Ten chlorinated samples were prioritised, in which 3 chlorophenols and bromoform were tentatively identified by GC-MS. Using HPLC-HRMS, the chemical formulas of 55 DBPs were elucidated and possible products were proposed for 44 of them. 31 of these were never reported before as DBPs. A novel pathway was proposed for the formation of 15 out of a total of 35 furan-like products tentatively identified using HPLC-HRMS. It consists of the opening of the oxidised phenolic ring followed by the formation of a 5-membered ring by intramolecular nucleophilic addition. These results indicate
description: 6
description: that the formation of furan-like DBPs may be far more widespread in drinking water than previously appreciated. Among the mechanistically plausible DBPs tentatively identified, 11 were predicted to be bladder carcinogens using a quantitative structure-toxicity relationship theoretical model. Prioritising critical DBPs will enable future research to assess their occurrence, confirm their toxicity and control their concentration in drinking water, ultimately reducing the bladder cancer risk.
Hyperelastic behavior of porcine aorta segment under extension-inflation tests fitted with various phenomenological models
Creators: name: Veljković, Dejan Ž.
name: Ranković, Vladimir J.
name: Pantović, Suzana B.
name: Rosić, Mirko A.
name: Kojić, Miloš R.
Publisher: name: Institute of Machine Design and Operation, Wrocław University of Technology, Wrocław
Year: 2014
Subjects: material parameters identification, mechanical properties, porcine aorta, strain energy function

description: Acta of Bioengineering and Biomechanics; 03/2014; ISSN 1509-409X
Do parental shame-proneness, perfectionism and beliefs about children’s emotions predict inductive and power assertive parenting styles? An empirical study.
Creators: name: Lloyd, Louise V. G.
Publisher: name: University of Surrey
Year: 2020

description: Parental responses to transgressions are a mechanism through which self-conscious emotions and social competence are socialised in children. Evidence indicates that inductive parenting is more effective than power assertive parenting in the development of child social competence. Given variation in parental discipline responses, this study examined predictors of the use of these parenting styles. The present study investigated parental shame-proneness, parental perfectionism, and parental acceptance of children’s expression of emotions as predictors of a predominantly inductive or power assertive parenting style. Sixty-nine mothers of typically developing children aged between 5 to 11 years completed an online study. A scenario-based measure of parenting responses to child transgression allowed for the categorisation of mothers into those with a predominantly inductive parenting style and those with a predominantly power assertive parenting style. Measures of mothers’ shame-proneness, perfectionism, and beliefs about children’s emotional expression included the Test of Self-Conscious Affect (TOSCA), the Almost Perfect Scale – Revised (APS-R), and the Parental Beliefs About Children’s Emotions (PBACE) questionnaire. Binary logistic regression analyses found a five-predictor model to be significantly better than a constant only model at predicting a predominantly inductive or power assertive parenting style. The five predictors in the model were parental shame-proneness, parental perfectionistic standards (adaptive perfectionism), parental acceptance of children’s expression of positive emotions, mothers’ level of education, and number of children in the family. The importance of considering these parental predictor variables, particularly shame-proneness, in the development of parenting interventions is discussed.
Comparison of constitutive models of arterial layers with distributed collagen fibre orientations
Creators: name: Skacel, Pavel
name: Bursa, Jiri
Publisher: name: Institute of Machine Design and Operation, Wrocław University of Technology, Wrocław
Year: 2014
Subjects: Arterial wall mechanics, Collagen fibre orientation, Constitutive modelling, Fibre distribution, Hyperfit software

description: Acta of Bioengineering and Biomechanics; 03/2014; ISSN 1509-409X
Armut durch Behinderung? – Menschen mit Behinderung sind trotz guter Gesetzeslage sozioökonomisch benachteiligt
Creators: name: Mori, Soya
name: Reyes, Celia
name: Yamagata, Tatsufumi
Publisher: name: südostasien – Zeitschrift für Politik • Kultur • Dialog
Year: 2018

description: Körperlich oder geistig beeinträchtigte Menschen gehören häufig zu den ärmsten Bevölkerungsgruppen. Laut UN-Entwicklungsprogramm (UNDP) leben 80 Prozent der Menschen mit Behinderungen in "Entwicklungsländern". Die Weltbank geht davon aus, dass 20 Prozent der ärmsten Menschen dieser Welt in irgendeiner Weise behindert sind und in ihren Gemeinden tendenziell als besonders benachteiligt angesehen werden.
description: südostasien – Zeitschrift für Politik • Kultur • Dialog, Bd. 25 Nr. 3 (2009): 1-2-3, letzte Chance vorbei? Lebenschancen in Südostasien
Quantification of Stability in an Agility Drill Using Linear and Nonlinear Measures of Variability
Creators: name: Mehdizadeh, Sina
name: Arshi, Ahmed Reza
name: Davids, Keith
Publisher: name: Institute of Machine Design and Operation, Wrocław University of Technology, Wrocław
Year: 2014
Subjects: Foot Placement Variability, Largest finite-time Lyapunov Exponent, Local Dynamic Stability, Standard Deviation

description: Acta of Bioengineering and Biomechanics; 03/2014; ISSN 1509-409X
Graphitic corrosion of grey cast iron: Wastewater and microstructural studies
Creators: name: PIMENTA-RICHARDSON, JACOB
Publisher: name: University of Surrey
Year: 2022

description: Planning the renewal and replacement of historic cast iron sewerage assets is key to the continued collection of wastewaters from thousands of homes, and the prevention of pipe failures potentially leading to pollution and flooding. The graphitic corrosion of cast iron is a relatively poorly understood process, and there appears to be little published data on the rate of this process in wastewater. Consequently, the aims of this research have been to improve the current understanding of cast iron corrosion in a sewage environment, and to understand further the process of graphitic corrosion. This has been achieved via three extensive experimental investigations. Firstly, multiple microstructural characterisation techniques were used to investigate the physical and chemical characteristics of graphitic corrosion, and these have revealed graphitic corrosion to be a more complicated process than current literature suggests, with composition, specifically silicon content, and microstructural aspects, including graphite flake distribution, playing key roles. Secondly, electrochemical and weight-loss methods have been used to perform corrosion studies of cast-iron in multiple wastewaters. The short-term (<1.5 years) corrosion rates attained from these studies, are very similar to those seen in the literature for cast irons which have corroded for >100 years in a soil environment, and this suggests that submerged sewage environments are no more aggressive than most soils. These studies have also shown that wastewater corrosion rates vary depending on the environment, e.g., septicity, flow conditions and biological activity. Thirdly, multiple electrochemical, weight-loss and characterisation studies have been used to understand the effect of microstructure on the progression of graphitic corrosion. It has been found that cast irons with smaller graphite flakes tend to exhibit greater volumetric metal loss via graphitic corrosion, than cast irons with larger flakes, and hence the graphitic corrosion process is affected by the graphite flake size.
Variation in diurnal sedation in mechanically ventilated patients who are managed with a sedation protocol alone or a sedation protocol and daily interruption
Creators: name: Mehta, Sangeeta
name: Meade, Maureen
name: Burry, Lisa
name: Mallick, Ranjeeta
name: Katsios, Christina
name: Fergusson, Dean
name: Dodek, Peter M.
name: Burns, Karen
name: Herridge, Margaret
name: Devlin, John W.
name: Tanios, Maged
name: Fowler, Robert
name: Jacka, Michael
name: Skrobik, Yoanna
name: Olafson, Kendiss
name: Cook, Deborah
Publisher: name: BioMed Central
Year: 2018

description: Background: Mechanically ventilated patients may receive more sedation during the night than during the day, potentially delaying extubation. We compared nighttime and daytime benzodiazepine and opioid administration in adult patients enrolled in a multicenter sedation trial comparing protocolized sedation alone or protocolized sedation combined with daily sedation interruption; and we evaluated whether nighttime and daytime doses were associated with liberation from mechanical ventilation. Methods: This is a secondary analysis of a randomized trial which was conducted in 16 North American medical-surgical ICUs. In all 423 patients, nurses applied a validated sedation scale hourly to titrate benzodiazepine and opioid infusions to achieve a light level of sedation. Using fentanyl equivalents and midazolam equivalents, we compared dosages administered during night (19:00 to 07:00) and day (07:00 to 19:00) shifts. Using multivariable logistic regression we evaluated the association between nighttime and daytime opioid and sedative doses, and spontaneous breathing trial (SBT) conduct, SBT success, and extubation. Results: Nighttime benzodiazepine and opioid doses were significantly higher than daytime doses (mean difference midazolam equivalents 23.3 mg, 95 % CI 12.9, 33.8, p < 0.0001; mean difference fentanyl equivalents 356 mcg, 95 % CI 130, 582, p = 0.0021). Mean Sedation Agitation Scale score was similar between night and day, and was at target (3.2 vs 3.3, 95 % CI −0.05, 0.02, p = 0.35). Self-reported nurse workload was similar during the night and day. Patients were more often restrained during day shifts (76.3 % vs 73.7 %, p < 0.0001), and there were more unintentional device removals during the day compared with night (15.9 % vs 9.1 %, p < 0.0001). Increases in nighttime drug doses were independently associated with failure to meet SBT screening criteria, SBT failure, and the decision not to extubate the patient despite successful SBT. Conclusion: Patients received higher doses of opioids and benzodiazepines at night. Higher nighttime doses were associated with SBT failure and delayed extubation. Trial registration: ClinicalTrials.gov NCT00675363 . Registered 7 May 2008.
Towards a grounded theory of how closeness is conceptualised by a group of mid-life men.
Creators: name: Halliwell, Kate
Publisher: name: University of Surrey
Year: 2020

description: This research portfolio contains three pieces of work conducted during my training as a Counselling Psychologist at the University of Surrey. Initially there is a review of literature on men and their close relationships. This is followed by two qualitative studies, with each based on a group of white British, professional mid-life men. The first of these explores experiences of relational closeness and the second focuses on developing new theory regarding how closeness is conceptualised.
Reforming Investor-State Arbitration
Creators: name: SHARMA, MALA
Publisher: name: University of Surrey
Year: 2021

description: This project investigates the ‘legitimacy crisis’ of the Investor-State Arbitration (ISA) system. It studies the ongoing reforms processes at the United Nations Commission on International Trade Law (UNCITRAL) and the International Centre for Settlement of Investment Disputes (ICSID) through a new framework of normative legitimacy. This framework called the Minimum Standard of Legitimacy (MSL) comprises five standards namely, independence and impartiality of decision-makers, consistency of decisions, transparency of proceedings and stake holders, participation of non-disputing parties and safeguarding regulatory freedom of States to minimally assess the legitimacy of ISA. These standards were chosen after an extensive review of literature and concerns expressed by States at the UNCITRAL reforms process. The project finds that ISA is not facing a legitimacy ‘crisis’ but is legitimacy deficit. While some areas such as transparency of proceedings and participation of third parties has seen marked improvements in recent years, a lot remains to be done in the areas of regulation of arbitrators, transparency of third-party funding arrangements, consistency of decisions and ensuring regulatory capacity of states. It therefore supports the creation of a new Multilateral Investment Court (MIC) proposed by the European Union (EU) at the UNCITRAL Reforms process. The MIC if structured appropriately can meet the minimum standard of legitimacy. However, if a broader standard of legitimacy including other normative criteria such as ‘conformity to human rights’ is adopted, whether the MIC meets this higher threshold will depend on its constitution and development of its jurisprudence. Since the impact of ISA go beyond disputing parties and have broader implications on social, political and economic arenas, the MIC should be conceived with a public law backbone, in a way that reconciles investment dispute resolution with other areas of international cooperation such as human rights.
Singularities in fluid dynamics: from the classical approach to Monge-Ampere geometry
Creators: name: D'Onofrio, Roberto
Publisher: name: University of Surrey
Year: 2024
Subjects: subject: Differential Geometry
subject: Fluid Dynamics
subject: Mathematical Physics
subject: FOS: Mathematics
subject: Meteorology
subject: Partial Differential Equations

description: This thesis presents some recently published results regarding two classical models of fluid dynamics: the 1D shallow water equations (SWE) and the 3D incompressible semigeostrophic equations. ​
Nachrichten
Creators: name: Hesse, Nicole
Publisher: name: südostasien – Zeitschrift für Politik • Kultur • Dialog
Year: 2018

description: Nachrichten aus der Region.
description: südostasien – Zeitschrift für Politik • Kultur • Dialog, Bd. 25 Nr. 3 (2009): 1-2-3, letzte Chance vorbei? Lebenschancen in Südostasien
Non-Linear and Multi-Domain Modelling of a Free Piston Engine and Linear Electric Machine
Creators: name: Brosnan, Patrick
Publisher: name: University of Surrey
Year: 2023
Subjects: Free-Piston Engine (FPE)
Permanent Magnet Linear Synchronous Machine (PMLSM)
Non-Linear Modelling
Multi-Domain Modelling
Biomass Hydrous Ethanol Fuel
Homogeneous Charge Compression Ignition (HCCI)
Machine Learning (ML)
Non-Linear Control
Reinforcement Learning (RL)

description: In the modern world, reducing gaseous emissions has been a motivational driver and enabler of low-carbon technology development. The release of excessive carbon emissions into our atmosphere is considered a global issue, with academia and industry intensely engaged in developing a viable solution for its reduction.

description:

description: On the question of lowering gaseous carbon emission in thermal machines that produce electrical energy, the Free-Piston Engine (FPE) can be considered a viable solution. The FPE is an inherently novel technology with higher thermal efficiency than its Conventional Reciprocating Piston Engine (CPE) counterpart. The unique piston motion of the FPE is not constrained kinematically like the CPE by way of its connecting crankshaft and rotational inertial mass. In contrast, it is being dynamically constrained by its translational coupled loads. Constraining the FPE in this fashion enables a vast range of piston motion trajectories to be explored during its development and considered during its operation, which may be essential to reduce in-cylinder gaseous emissions.

description:

description: With that, this thesis will introduce the key motivations and drivers for continued FPE development and highlight its innate advantages and challenges. FPE fundamentals and its rich history will be presented, including how industry and academia have described, tested and controlled its highly non-linear behaviour.

description:

description: Accordingly, a novel system-level and multi-domain approach that describes the characteristic multi-directional nature of the FPE is first presented, followed by a detailed non-linear description of the coupled loads. The main body of this thesis demonstrates the usefulness of the proposed modelling approach by capturing the dominant dynamics of the FPE gas expander and opposed-piston FPE during both motoring and power generation. Consequently, the proposed modelling approach is validated against experimental hardware with identical parameters. The performance is assessed with a thorough qualitative and quantitative analysis, showing that the proposed non-linear and multi-domain modelling approach captured the dominant dynamics of the machine and is a viable solution for the future development of the FPE.
Politischer Islam in Indonesien
Creators: name: Breitbach, Andreas
Publisher: name: südostasien – Zeitschrift für Politik • Kultur • Dialog
Year: 2018

description: Buchbesprechung von: Frauke-Katrin Kandale, Islam in Indonesien nach 1998 am Beispiel der Partai Keadilan Sejahtera. Berlin, 2008, ISBN 978-3-940132-03-1.
description: südostasien – Zeitschrift für Politik • Kultur • Dialog, Bd. 25 Nr. 3 (2009): 1-2-3, letzte Chance vorbei? Lebenschancen in Südostasien
Reducing Intrusive Memories of Trauma Using a Visuospatial Interference Intervention With Refugees and Asylum Seekers With Posttraumatic Stress Disorder (PTSD)
Creators: name: GREENFIELD, EMILY MAY
Publisher: name: University of Surrey
Year: 2021

description: Refugees are more likely than the general Western adult population to have posttraumatic stress disorder (PTSD). However, refugees face numerous barriers to accessing trauma-focused therapy. Accordingly, there is a need for novel, accessible and scalable psychological interventions. Using a multiple baseline case series (AB) design (N=7), this study investigated whether a brief cognitive intervention involving a memory reminder cue and a visuospatial task (Tetris gameplay) reduced number of intrusions of trauma in refugees with severe PTSD. Due to Covid-19 restrictions, most meetings (including intervention sessions) were delivered remotely (via video call or telephone). Participants were randomly allocated to wait one, two, or three weeks (pre-intervention phase, monitoring only; A), before starting the intervention phase (B) which comprised of five weekly sessions. Participants monitored number of intrusions (primary outcome) in a daily diary during both phases and were followed up at one and five weeks. The number of intrusions experienced during the intervention phase was compared to the number of intrusions experienced during participants’ own preceding pre-intervention phase. Four refugees experienced a reduction in number of intrusions from pre- to post-intervention. However, there were differences in the extent of the reduction, the specificity and longevity of the effect, and the broader impact on PTSD and depression symptoms, concentration, and functioning. One refugee did not experience a reduction in number of intrusions across experimental phases and two experienced an increase. This study highlighted challenges to ensuring that key components of the intervention are successfully implemented with refugees with severe PTSD and highlighted key areas for future research. Further investigations of the effectiveness of the intervention in reducing number of intrusions in refugees with severe PTSD is warranted.
Passagerincitamenter i bustrafik – arbejdet i praksis
Creators: name: Jacobsen, Søren
Publisher: name: Proceedings from the Annual Transport Conference at Aalborg University
Year: 2009

description: Gennem de seneste år har den kollektive bustrafik i Hovedstadsområdet mistet mange passagerer til trods for investeringer i den kollektive trafik. Siden udliciteringen af bustrafikken i 1990’erne har der været et klar opdeling af ansvaret mellem operatør og trafikselskab. Afregningen med operatørerne har været efter et bod- og bonussystem, uden skelen til antallet af kunder i bussen. Arriva henvendte sig i 2007 til Movia med et tilbud om at indgå i et forsøg, hvor Arriva mod at få andel i stigende passagerindtægter fra flere påstigere ville medvirke til at udvikle en ny form for samarbejde, i første omgang mellem operatør og trafikselskab. I Helsingborg har kommunen og Arriva på baggrund af miljø- og trængselsproblemer indgået en lignende aftale, hvor målet er en fordobling af passagertallet i løbet af 10 år. Resultaterne af dette samarbejde har indtil nu været meget positive. I et samarbejde mellem de 6 involverede kommuner, Movia og Arriva udvikledes en samarbejdsaftale for et forsøg med incitamentskontrakter, som blev underskrevet 1. juni 2008. Aftalen omfatter linjerne 150S og 173E, som kører fra Nordsjælland til Nørreport via Helsingør og Lyngbyvejen – i alt igennem 6 kommuner. Langs linjen ligger en række større og mindre virksomheder, indkøbsmuligheder, skoler, gymnasier, en forskerpark og DTU. Linjen havde i 2007 årligt 3,6 mio. passagerer, 23 busser tilknyttet og i alt 58.000 vogntimer. Dette paper beskriver arbejdet med linje 150S og 173E på det praktiske plan, fra d. 1. juni 2008 og frem til nu.
description: Proceedings from the Annual Transport Conference at Aalborg University, Vol. 1 No. 1 (2009): Proceedings from the Annual Transport Conference at Aalborg University
(Hinter-) Gründe – Zur Wiederwahl des Präsidenten SBY
Creators: name: Ziegenhain, Patrick
Publisher: name: südostasien – Zeitschrift für Politik • Kultur • Dialog
Year: 2018

description: Auch in den kommenden Jahren wird Indonesien von Präsident Susilo Bambang Yudhoyono regiert. Der amtierende Staats- und Regierungschef erreichte bei der Präsidentschaftswahl am 8. Juli 2009 mit 60,8 Prozent der Stimmen einen deutlichen Wahlsieg und die absolute Mehrheit der Stimmen bereits im ersten von zwei möglichen Wahlgängen.
description: südostasien – Zeitschrift für Politik • Kultur • Dialog, Bd. 25 Nr. 3 (2009): 1-2-3, letzte Chance vorbei? Lebenschancen in Südostasien
Energi- og CO2-mæssige effekter af afgiftsændringen i april 2007
Creators: name: Gravesen, Rasmus
Publisher: name: Proceedings from the Annual Transport Conference at Aalborg University
Year: 2009

description: Afgifterne på person- og varebiler blev ændret i april 2007. I dette paper præsenteres projektets hovedresultater inklusive de foreløbige energi- og CO2-mæssige effekter af afgiftsændringen. Samlet set – en mindre omlægning med en mindre effekt Alt i alt virker afgiftsændringen efter hensigten, idet de private bilisters CO2-udledning mindskes. Dog er effekten begrænset, da der ikke er tale om en fundamental omlægning af bilafgifterne. Bilens pris spiller en væsentlig rolle for folks valg af bil. Differentieringer af afgifter efter energiforbrug og CO2-udledning indeholder et stort potentiale, idet ændringer i prisen kan få tre ud af fire bilkøbere til at vælge en mere brændstoføkonomisk bil. Bilkøberne bakker desuden op om, at bilafgifterne i endnu højere grad bør afspejle bilernes energiforbrug og CO2-udledning samt at afgifterne bør omlægges fra køb til brug af bil.
description: Proceedings from the Annual Transport Conference at Aalborg University, Vol. 1 No. 1 (2009): Proceedings from the Annual Transport Conference at Aalborg University
Kuta Rock City – Die Möglichkeiten junger Punks auf Bali, ihr Leben zu gestalten
Creators: name: Heuvels, Maren
Publisher: name: südostasien – Zeitschrift für Politik • Kultur • Dialog
Year: 2018

description: Bali, das Paradies auf Erden? Für Touristen bietet sich Bali mit wunderschönen Stränden, gastfreundlichen Menschen und einer reichen Kultur dar. Doch wie sind die Lebenschancen für die jungen Menschen, für die Bali Heimat, Familie und Arbeit bedeutet?
description: südostasien – Zeitschrift für Politik • Kultur • Dialog, Bd. 25 Nr. 3 (2009): 1-2-3, letzte Chance vorbei? Lebenschancen in Südostasien