cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The migration experiences of Nigerian Commonwealth Scholars educated in Great Britain: leave, learn and return?
Creators: name: Okorie, Chidinma
Publisher: name: Loughborough University
Year: 2023
Subjects: Other earth sciences not elsewhere classified

description: This thesis examines why individuals who study abroad decide to stay abroad or return home after completion of studies, focusing on the diverse reasons for moving abroad for study, staying put in the place of study, or returning to the place of origin. To explore these dimensions, this thesis uses the case study of Nigerian Commonwealth Scholars (NCS) educated in Great Britain. Qualitative methodology in the form of interviews and focus group discussions that draw on the oral history interviewing technique is employed to collect rich and in-depth biographical data on the pre-, during and post-scholarship migratory phases of the NCS, which are termed as ‘Leaving home’, ‘Learning abroad’ and ‘Returning home’, respectively, in this thesis. In doing so, this thesis reveals migrants’ experiences and decision-making processes in relation to education, employment, and career development, as well as the underlying contexts of opportunities and obstacles at ‘home’ and ‘abroad’ that shape the migration processes and decision outcomes. Using the novel case study of NCS, the following contributions to migration scholarship are provided. First, the comparative perceptions and realities of studying at home and abroad, which underpin the migration experiences of the NCS, are revealed, specifically within the Nigerian-British context. Second, using the concepts of the immediate and late returnees, empirical insights are offered on the context of the NCS’ return post-scholarship, which is conceptualised as obligatory rather than the traditional binaries of ‘voluntary’ or ‘involuntary’ return. It is revealed that one of the implications of obligatory return is the unfulfilled migration aspiration to stay abroad, which in turn can spur the likelihood of re-emigration after return. By combining insights from both the ‘push-pull plus’ (van Hear et al. 2018) and ‘aspiration/ability’ (Carling and Schewel 2018) models to explain the migration experiences of the NCS, this thesis nuances structural push-pull explanations of international migration drivers by showing how that migration processes and decision outcomes are shaped by the complex interactions of structural influences and migrants’ subjectivities. Also, by introducing the perspective of (un)fulfilled migration aspirations, the empirical evidence from this thesis contributes to understandings of the adequacy and implications of return migration policies for possible future migration, which are relevant to wider salience of brain drain. It is concluded that these contributions are relevant in understanding more fully why individuals who study abroad decide to stay abroad or return home after completion of studies.
title: Μελέτη θραύσης υλικών και πετρωμάτων από αυτοσχέδιο φυγοκεντρικό σπαστήρα
Creators: name: Κισκήρα Κυριακή
Publisher: name: Technical University of Crete
Year: 2012

description: Μη διαθέσιμο
Normalised transverse emittance reduction via ionisation cooling in MICE ‘Flip Mode’
Creators: name: Jurj, Paul Bogdan
Publisher: name: Imperial College London
Year: 2022

description: Low-emittance muon beams are central to the development of a Muon Collider and can significantly enhance the performance of a Neutrino Factory. The main challenge for muon acceleration stems from the large emittance with which the muon beam is produced. Maximising the muon yield while maintaining a suitably small aperture in the accelerator system requires that the muon beam emittance be reduced (cooled). The international Muon Ionisation Cooling Experiment (MICE) was designed to demonstrate the feasibility of the ionisation cooling technique, and provide the first measurement of normalised transverse emittance reduction in a muon beam. This work focuses on the emittance reduction analysis of 140 MeV/c MICE muon beams that passed through a liquid hydrogen or a lithium hydride absorber. During the acquisition of the studied data sets, the magnetic channel produced a field that flipped polarity at the absorber, to prevent a canonical angular momentum increase. A novel beam sampling procedure was developed to account for imperfections in beam matching at the entrance into the cooling channel, which improved the cooling signal measurement. A reduction in the muon beam normalised transverse emittance that grows linearly with input emittance was observed, which is a clear signal of ionisation cooling. The measurement is consistent with the simulation and the theoretical model. Furthermore, both the liquid hydrogen and the lithium hydride absorbers were found to induce a reduction in the mean canonical angular momentum of the beam. This effect can be attributed to energy loss at the absorber situated at the field polarity flip, combined with an increasing beam size across the absorber region. This result confirms that the field polarity flip at the absorber would maintain a low-magnitude canonical angular momentum within the cooling stage of a future muon facility.
Northwest axis in the electrocardiogram — A sign of right ventricular remodeling in tetralogy of Fallot. A case report
Creators: name: Nikus, Kjell
name: Punkka, Olli
name: Barbosa-Barros, Raimundo
name: Daminello-Raimundo, Rodrigo
name: DeAbreu, Luiz Carlos
name: Ricardo Pérez-Riera, Andrés
Publisher: name: University of Limerick
Year: 2023

description: The typical ECG changes in tetralogy of Fallot are right axis deviation, large R waves in the anterior precordial leads and large S waves in the lateral precordial leads. We present a patient with extreme deviation of the frontal QRS axis between − 90◦ and ± 180◦. The child underwent open heart surgery twice before one year of age and a third time at nine years of age. The axis change persisted into adulthood.
Research Data Infrastructures and Services in NII - interoperability and interconnectivity
Creators: name: Hiraki, Toshiyuki
Publisher: name: Zenodo
Year: 2023
Subjects: Open Science
Research Data Management
Interoperability
Interconnectivity
NII
Research Data Cloud

description: This file presents the current status of the research data infrastructures developed and operated by the National Institute of Informatics (NII) in Japan. It introduces the core infrastructures: GakuNin for authentication, SINET6 and Eduroam for networking, GakuNin Cloud for cloud adoption support, and NII Research Data Cloud for research data management during the whole research data lifecycle. It also mentions the current status and challenges of improvement inter/intra-connectivity and inter/intra-operability toward open science.
Laser-plasma interactions as tools for studying processes in quantum electrodynamics
Creators: name: Colgan, Cary Gene William Douglas
Publisher: name: Imperial College London
Year: 2022

description: Conventional particle accelerators and astronomical observations have long been some of the only tools for studying processes in high energy physics. The development of laser-plasma sources and high gradient accelerators will therefore be a key asset to these studies. In particular, laser-plasma accelerators have favourable spatial and temporal properties for studies into intense processes, and can be readily coupled to a wide array of other laser-plasma sources creating unique environments. Here, coupling to an X-ray source and intense laser focus were used to study processes in quantum electrodynamics. To study the linear Breit-Wheeler process, a 40 ps laser was used to drive a volumetric X-ray emitter. Line emission from a thin-foil Ge target, produced a highly efficient (3.4%), dense source of 1.3 − 1.9 keV X-rays, with 3 ± 1 (stat.) ±0.4 (sys.) ×10^{12} photons/eV/sphere. These X-rays were collided with bremsstrahlung gamma rays (with energies up to 800 MeV) to investigate electron-positron pair production. The X-ray source was well-optimised for studying this interaction, and would allow the detection of Breit-Wheeler pairs if used with a moderately improved electron beam for generating bremsstrahlung (3× the highest electron energy and 5× the total charge, as achieved previously). This would constitute the first laser-plasma photon- photon collider with low virtuality (energy off mass-shell ≈ 10^{−20} MeV^2). In order to differentiate between competing models of electron radiation reaction in strong field quantum electrodynamics, a narrow energy-spread electron beam was studied. By utilising shock injection into a laser wakefield accelerator, a high energy (1260±40 MeV), narrow energy- spread (4.1±0.9 %) beam was generated. This is one of only a few studies that have successfully achieved these electron beam properties. While the shot-to-shot reproducibility of the electron beam was limited to 60%, the relative energy-spread was sufficiently small that differentiation of radiation reaction models could be readily achieved in future experiments. With the upcoming commissioning of many multi-PW laser facilities, these studies demonstrate how active research into quantum electrodynamics can be achieved on the smaller, more accessible, laser-laboratory scale.
title: Βελτιστοποίηση χωροθέτησης κόμβου ταινιοδρόμων σε επιφανειακά λιγνιτωρυχεία συνεχούς λειτουργίας
Creators: name: Βλάχου Αντιγόνη
Publisher: name: Technical University of Crete
Year: 2012

description: Μη διαθέσιμο
title: Μοντελοποίηση και υπολογισμός αποθεμάτων του λιγνιτικού κοιτάσματος Κομνηνών Δ. Μακεδονίας
Creators: name: Σαμιώτης Εμμανουήλ
Publisher: name: Technical University of Crete
Year: 2012

description: Μη διαθέσιμο
Additional file 3: of Recurrent tumor-specific regulation of alternative polyadenylation of cancer-related genes
Creators: name: Xue, Zhuyi
name: Warren, RenĂŠ
name: Gibb, Ewan
name: MacMillan, Daniel
name: Wong, Johnathan
name: Chiu, Readman
name: Austin Hammond, S.
name: Yang, Chen
name: Nip, Ka
name: Ennis, Catherine
name: Hahn, Abigail
name: Reynolds, Sheila
name: Birol, Inanc
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Developmental Biology
subject: Cancer

description: Figure S4. Illustration of all 77 identified events of tumor-specific cleavage patterns. (PDF 5699 kb)
title: Ανάπτυξη λογισμικού προσομοίωσης μελετών PVT με χρήση κυβικών καταστατικών εξισώσεων
Creators: name: Πατσαλίδης Κυριάκος
Publisher: name: Technical University of Crete
Year: 2012

description: Μη διαθέσιμο
Stratégie de recherche et de veille documentaire - Sciences
Creators: name: Arros, Julie
Publisher: name: Zenodo
Year: 2023
Subjects: recherche documentaire
veille documentaire
doctorat
bibliographie
bibliothèques
documentation
flux RSS

description: Objectifs de la formation • Elaborer une stratégie de recherche bibliographique à partir de son sujet de thèse • Organiser une veille bibliographique avec les flux RSS • Connaître et maîtriser les fonctionnalités avancées des outils de recherche • Savoir accéder aux ressources documentaires acquises par son établissement
Stratégie de recherche et de veille documentaire - Musicologie
Creators: name: Pauplin, Pascale
Publisher: name: Zenodo
Year: 2023
Subjects: recherche documentaire
veille documentaire
doctorat
bibliographie
bibliothèques
documentation
flux RSS
musicologie

description: Objectifs de la formation • Elaborer une stratégie de recherche bibliographique à partir de son sujet de thèse • Organiser une veille bibliographique avec les flux RSS • Connaître et maîtriser les fonctionnalités avancées des outils de recherche • Savoir accéder aux ressources documentaires acquises par son établissement
Stratégie de recherche et de veille documentaire - Philosophie
Creators: name: Aurore-Marie Guillaume
Publisher: name: Zenodo
Year: 2023
Subjects: recherche documentaire
veille documentaire
doctorat
bibliographie
bibliothèques
documentation
flux RSS
philosophie

description: Objectifs de la formation • Elaborer une stratégie de recherche bibliographique à partir de son sujet de thèse • Organiser une veille bibliographique avec les flux RSS • Connaître et maîtriser les fonctionnalités avancées des outils de recherche • Savoir accéder aux ressources documentaires acquises par son établissement
Living patches engineered from human umbilical cord derived fibroblasts and endothelial progenitor cells
Creators: name: Schmidt, Dörthe
name: Mol, Anita
name: Neuenschwander, Stefan
name: Breymann, Christian
name: Gössi, Matthias
name: Zund, Gregor
name: Turina, Marko
name: Hoerstrup, Simon P.
Publisher: name: ETH Zurich
Year: 2005
Subjects: Endothelial progenitor cells
Umbilical cord
Endothelium
Patches

description: European Journal of Cardio-Thoracic Surgery, 27 (5)
description: ISSN:1010-7940
description: ISSN:1873-734X
Understanding antimalarial treatment coverage and treatment delays and implications for severe P. falciparum malaria and mortality
Creators: name: Mousa, Andria
Publisher: name: Imperial College London
Year: 2022

description: Plasmodium falciparum malaria is a preventable but deadly parasitic disease, leading to an estimated 409,000 deaths per year, 95% of which occur in the African region. Despite overall reductions in the risk of malaria mortality in the past two decades, progress in further improvements has stagnated since 2016. Timely access to effective first-line artemisinin combination therapies (ACT) remains one of the most important components of case management and successful malaria control interventions. The effect of delay to treatment is difficult to study but important to quantify and include in estimates of malaria morbidity and mortality. This thesis aims to explore the coverage and effectiveness of antimalarials in the community, quantify the impact of delay to treatment on severe malaria and mortality, and evaluate current interventions that reduce treatment delays. Using nationally representative household surveys conducted in Sub-Saharan African communities, I estimate the coverage of different types of antimalarials and rates of potential parasite clearance following self-reported antimalarial treatment. I also develop and calibrate an individual-based model to the household survey data to explore antimalarial effectiveness in the community. Factors affecting antimalarial effectiveness, such as duration of treatment and type of provider are also explored. Further, I conduct a systematic review and individual participant meta-analysis to quantify the impact of prompt treatment on reducing severe malaria and different severe malaria phenotypes. Using these, I model the relationship between age and presentation with severe malaria symptoms and subsequently estimate the burden of severe malaria phenotypes and malaria mortality across sub-Saharan Africa using a model of malaria transmission, developed by Imperial College London. Finally, I estimate the impact of prompt treatment in terms of severe malaria cases and deaths averted using baseline and endline data from the Rapid Access Expansion (RAcE) programme, following implementation of integrated Community Case Management (iCCM) interventions in high-burden countries of Sub-Saharan Africa. This thesis explores several key aspects relevant to progression to different severe malaria phenotypes and mortality and demonstrates the importance of prompt and effective first-line ACT treatment, good treatment adherence, adequate provision of community health care services, as well as regulation and provision of high-quality antimalarials. It also highlights differences in both the fatality and the impact of delay to treatment for different severe malaria phenotypes. Understanding the distribution of these phenotypes and their contribution to malaria mortality is important in informing malaria control interventions.
Stratégie de recherche et de veille documentaire - Lettres et langues
Creators: name: Jaffrez, Christine
Publisher: name: Zenodo
Year: 2023
Subjects: recherche documentaire
veille documentaire
doctorat
bibliographie
bibliothèques
documentation
flux RSS
littérature
langues

description: Objectifs de la formation • Elaborer une stratégie de recherche bibliographique à partir de son sujet de thèse • Organiser une veille bibliographique avec les flux RSS • Connaître et maîtriser les fonctionnalités avancées des outils de recherche • Savoir accéder aux ressources documentaires acquises par son établissement
Enabling secure time-series data sharing via homomorphic encryption in cloud-assisted IIoT
Creators: name: Halder, Subir
name: NEWE, THOMAS
Publisher: name: University of Limerick
Year: 2023
Subjects: Engineering

description: A growing number of Industrial Internet of Things (IIoT) devices and services collect massive time-series data related to production, monitoring and maintenance. To provide ubiquitous access, scalability and sharing possibilities, the IIoT applications utilize the cloud to store collected data streams. However, secure storing of the massive and continuously generated data poses significant privacy risks, including data breaches for IIoT applications. Alongside, we need to protect the utility of the data streams by allowing benign services to access and run analytics securely and selectively. To address this, we propose SmartCrypt, a data storing and sharing system that supports scalable analytics over the encrypted time-series data. SmartCrypt enables users to secure and fine-grain sharing of their encrypted data. Additionally, SmartCrypt guarantees data confidentiality in the presence of unauthorized parties by allowing end-to-end encryption using a novel symmetric homomorphic encryption scheme. We perform extensive experiments on a real-world dataset primarily to assess the feasibility of SmartCrypt for secure storing and sharing of IIoT data streams. The results show that SmartCrypt reduces query time by 17%, reduces range query time by 32%, improves throughput by 9% and scalability by 20% over the best performed scheme in the state-of-the-art.
Stratégie de recherche et de veille documentaire - Histoire
Creators: name: Broms, Hélène
Publisher: name: Zenodo
Year: 2023
Subjects: recherche documentaire
veille documentaire
doctorat
bibliographie
bibliothèques
documentation
flux RSS
histoire

description: Objectifs de la formation • Elaborer une stratégie de recherche bibliographique à partir de son sujet de thèse • Organiser une veille bibliographique avec les flux RSS • Connaître et maîtriser les fonctionnalités avancées des outils de recherche • Savoir accéder aux ressources documentaires acquises par son établissement
The spectrum and term analysis of doubly-ionised iron
Creators: name: Concepcion Mairey, Florence
Publisher: name: Imperial College London
Year: 2022

description: The study of astrophysical spectra is reliant on accurate atomic data, and there is a need for the atomic data of iron as its spectral lines are present and numerous in many astrophysical sources, due to its high relative abundance and complex spectrum. This PhD thesis reports the results of the term analysis of doubly-ionised iron (Fe III). A Penning discharge lamp is used to generate the spectrum of Fe III, which is recorded using the Fourier transform spectrometer (FTS) at Imperial College London, UK. The FTS recorded high-resolution Fe III lines in the UV range of 33,826 cm⁻¹ to 65,508 cm⁻¹. This was supplemented with grating spectral data at high wavenumbers (55,090 cm⁻¹ to 111,121 cm⁻¹) from the normal incidence vacuum spectrograph at the National Institute of Standards and Technology in Maryland, USA. The linelists created from the FTS and grating data were wavenumber calibrated using the accurate Fe II Ritz wavelengths produced by Nave & Johansson (2013) [1]. FTS line wavenumbers were calibrated to an accuracy of 5 − 8.5 parts per 10⁸, depending on the spectrum, with uncertainties of strong lines typically between 0.0024 cm⁻¹ and 0.0074 cm⁻¹. The uncertainties of the grating lines are between 0.091 cm⁻¹ and 0.86 cm⁻¹. The classified spectral lines are used in the term analysis to revise 305 Fe III energy level values in configurations 3d⁶, 3d⁵4s, 3d⁵4p, 3d⁵4d, 3d⁵5s, and 3d⁵5d. The Ritz wavenumbers of 1599 classified Fe III lines were calculated, providing wavenumbers at least an order of magnitude more accurate than previously published linelists. The Ritz wavenumbers for 432 parity-forbidden lines were also calculated. The results of this thesis will be used by astronomers for the identification and analysis of Fe III spectral lines in astrophysical spectra.
Finding the needle in the haystack: 21 cm cosmology in the midst of foregrounds
Creators: name: Hothi, Iandeep
Publisher: name: Imperial College London
Year: 2022

description: Epoch of Reionization (EoR) represents the last major phase change in the Universe. Here, radiation from the first sources carved out ionized bubbles around them, which grew until the bubbles merged - slowly ionizing the Intergalactic Medium (IGM). This epoch gives rise to the Universe we see today but is a 1 billion-year period we know very little about. We have indirect constraints from the CMB and spectra of high redshift quasars that give up loose timing constraints but leave fundamental questions unanswered. The hydrogen during this epoch emits a weak hyperfine transition line, a photon with a wavelength of 21cm - giving us a direct probe into this important epoch. Several radio interferometers are looking to measure this 21cm signal, providing statistics that will allow us to answer fundamental questions about this epoch. Sadly, the signal we observed is contaminated with foregrounds that are orders of magnitude stronger than the 21cm signal we wish to observe. These foregrounds come from our own galaxy in the form of synchrotron and free-free emission from diffuse clouds as well as from extra-galactic sources. In this Thesis, we aim to understand these foregrounds and utilise techniques to mitigate them. Allowing for 21 cm Cosmology In The Midst of Foregrounds. We first start by applying these techniques to real data and forward model observations to better understand the performance and limitations of the different techniques. We then see how these techniques perform on higher-order statistics and if we can recover the statistic from observations. We then look to potential synergies between large-scale galaxy surveys and interferometers to see if we can understand the end of the EoR better and use these synergies for foreground mitigation. We finally focus on removing bright sources in our sky and how improving models of these bright sources will allow us to better recover the 21cm signal from the EoR.
Building food systems resilience in the West African Sahel
Creators: name: Cicek, Harun
name: Dietemann, Lauren
name: de Porras, Miguel
Publisher: name: Zenodo
Year: 2021
Subjects: Sahel
Food systems
resilience

description: The West African Sahel is at the frontline of climate change with severe land degradation, water scarcity and soil erosion problems that are expected to increase in the coming years. Due to the Sahel region providing food and basic income to millions of people, several social and economic factors are increasing the pressure on the region’s natural resources. The Sahel is already experiencing challenges that many other areas of the world might face in the near future. Agricultural and food systems in the region are becoming more and more dependent and vulnerable to external shocks, resulting in strong impacts on the local ecosystems and communities. Countering challenges such as the loss of biodiversity, political instability and increased migration flows, the Sahel region will enable other regions to learn and adapt. The EU-funded project SustainSahel is based upon systemic approaches which aim to combat these pressures through enhancing food systems resilience in the Sahel region. SustainSahel has been working in the region since 2020 with a specific focus on three countries of West Africa; Senegal, Burkina Faso, and Mali. The project combines natural and social sciences with a transdisciplinary approach that brings together researchers and farmers to implement sustainable food systems. Partner in GFAR FiBL is coordinating with 18 partners from 10 different countries, both in Europe and Africa, who join their forces with local stakeholders to transition to resilient food systems.
description: https://blog.gfar.net/2021/11/18/building-food-systems-resilience-in-the-west-african-sahel/
title: Μοντελοποίηση και υπολογισμός αποθεμάτων του λιγνιτικού κοιτάσματος Λακκιάς Δ. Μακεδονίας
Creators: name: Οικονόμου Γιώργ
Publisher: name: Technical University of Crete
Year: 2012

description: Μη διαθέσιμο
Revealing Hidden Figures in Natural History Collections Working Group BIOME 2022 Recap
Creators: name: Flemming, Adania
name: Leachman, Siobhan
name: Mabry, Makenzie
name: Phillips, Molly
name: Zeringue-Krosnick, Shawn
name: Kovacs, Jennifer
name: Aina, Olubunmi
Publisher: name: QUBES Educational Resources
Year: 2022

description: A quick overview from the revealing hidden figures working group as part of BIOME 2022.
Professional Rugby Union Players’ Perceived Psychological Recovery and Physical Regeneration During the Off-season: The Rugby REST (Recovery @ End of Season Techniques) Project
Creators: name: Mellalieu, Stephen
name: Sellars, Paul
name: Arnold, Rachel
name: Williams, Sean
Publisher: name: Cardiff Metropolitan University
Year: 2023
Subjects: classificationCode: 520107
subject: Sport and exercise psychology

description: Using a mixed methods design this project examined professional players’ perceptions of their mental and physical health and well-being across the off-season period, and the psychological and physical strategies used to recover and regenerate from their respective competitive seasons.
Digitalisierungsbudget der Stadt Frankfurt: Neuer Buchscanner am Museum Angewandte Kunst
Creators: name: Redaktion, Die
Publisher: name: AKMB-news: Informationen zu Kunst, Museum und Bibliothek
Year: 2023

description: AKMB-news: Informationen zu Kunst, Museum und Bibliothek, Bd. 28 Nr. 1 (2022): AKMB-news
title: Discriminative training of language models
Creators: name: Φυτοπουλος Νικολαος
Publisher: name: Technical University of Crete
Year: 2014

description: The present thesis investigates the use of discriminative training on continuous Language Models. The main motivation for dealing with continuous language models was that by construction they overcome the limits of N-gram based models. N-gram models have been widely used in Language Modeling, but suffer from lack of generalizability and contain a very large number of parameters that are hard to adapt. Another flaw of N-gram models is the need for a large amount of training data, in order to cover as many N-grams as possible. Continuous Gaussian Mixture Language Models (GMLMs) for Speech Recognition have proven to be effective in terms of smoothing unseen events and adapting efficiently while using relatively small amount of data when compared to N-gram models.

The training and testing data were extracted from the Wall Street Journal Corpus. Although the size of the vocabulary used in the corpus is large, the actual number of words being used in the present thesis is resticted. Data has the form of a continuous-space vector and consists of the history of each word in the corpus. The dimensions of these vectors were reduced by using SVD and LDA techniques.

As far as the main objective of the thesis is concerned, attempts focus on improving the performance of GMLMs that have been previously trained by using the ML criterion on Language Models by adapting and using the Maximum Mutual Information(MMI) Estimation Method previously deployed in training HMMs for acoustic models. MMI acoustic models have proven to perform better than ML models, therefore MMI training gave a strong incentive in order to apply it on continuous language models. In addition, other discriminative criteria such as Minimum Phone Error (MPE) or Minimum Classification Error(MCE) are also theoretically investigated. Perplexity is the metric being used to measure the effectiveness of the presented method. The experiments of the thesis focus on testing MMI models that are smoothed with their correspondent baseline ML model and MMI models that are unsmoothed, with mixed results. The desired improvement is achieved in the case of unsmoothed MMI models against ML models.
Magnetic antiperovskite Mn3AN thin films
Creators: name: Johnson, Freya Clementine Cruickshank
Publisher: name: Imperial College London
Year: 2022

description: As computing demands increase exponentially, so too has the desire for new computing technologies that operate faster and with greater efficiency. Ferromagnetic materials were initially seen as ideal candidates for use in memory and logic devices, and this field of study was termed “spintronics”. Subsequently many issues with using ferromagnets for this purpose have been discovered. They have high energy requirements for write operations, are sensitive to magnetic fields, and they produce stray fields which limit how densely elements may be packed together. Because of these challenges, interest has turned to antiferromagnetic materials (AFMs) which do not possess sensitivity to magnetic field, may be packed densely together, have multi-level stability, and have theoretical switching speeds 100 times faster than ferromagnets. These advantageous features bring the added complication that characterising AFMs, in particular thin films suitable for use in ICT, is notoriously challenging due to the vanishing magnetisation. In this thesis, we grow and investigate thin films of the antiperovskite family Mn3AN, where A = Ni, Sn. These materials possess particular non-collinear antiferromagnetic structures that lead to anomalous physical properties not normally expected in AFMs. We first look at the anomalous Hall effect (AHE), and show how strain applied using a piezoelectric substrate may be used to manipulate the intrinsic contributions to the AHE in Mn3NiN. We then use a scanning laser to induce a local thermal gradient in a patterned device, and by measuring the anomalous Nernst effect we reveal the underlying antiferromagnetic macrodomain distribution. Finally, we measure the MOKE spectra of a Mn3NiN sample for selected temperatures cooling through the Néel temperature, TN, and from comparisons with theory confirm the presence of a ferrimagnetic phase above TN. This phase shares the same magnetic space group as the non-collinear phase, and shows promise for spintronic applications at room temperature.
The impact of electricity system characteristics on the role and value of power generation technology in the system transitions
Creators: name: Pratama, Yoga Wienda
Publisher: name: Imperial College London
Year: 2022

description: System decarbonisation has been a focus in the development of energy systems in the 21st century and the decarbonisation of electricity systems is understood to be critical to enabling the whole system decarbonisation. Accordingly, the future electricity system is anticipated to exhibit distinct characteristics compared to the current system. However, preoccupation with images of the 20st century system persists, leading to a disparity between the climate mitigation goals, policy decisions, future system requirements, technology innovations focus, and market mechanisms. This thesis attempted to address this challenge by investigating the role and value of power generation technology, particularly CCS-equipped power plants, in delivering net-zero emissions targets under different policy and market paradigms in systems with different characteristics. Here, we show that policy mechanisms and technology innovations that overlook the systems’ integration cannot decarbonise the systems while potentially inflating the cost. Despite the necessity to minimise the system’s residual emissions, the carbon tax needs to be paired with CO2 removal (CDR) credit to deep decarbonise the system. These mechanisms can accelerate variable renewable energy (VRE) deployment that is benefited the most from further technology cost reduction. Although CCS continues to be seen as a pre-commercial technology, we found that the incumbent technology is already cost-effective to provide substantial value to the systems and that further cost reduction of CCS will not considerably reduce system cost. Thus, public spending should focus on efforts to enable the commercial deployment of CCS, such as CO2 transport and storage infrastructure deployment. Moreover, the implementation of CDR trading to complement existing wholesale electricity, capacity, and emissions markets can considerably reduce electricity prices. While these system-level findings appear to be relevant in all cases, we found that system characteristics strongly affect directions for future technology improvements in the technology level. Interestingly, in systems with rapidly growing demand, accelerating the deployment of low carbon dispatchable technology is more appreciated than technology improvements.
Visual analytics and visual audit
Creators: name: Zhang, Lu
Publisher: name: No Publisher Supplied
Year: 2022

description: Nowadays, increased use of audit data analytics (ADA) is likely to be important for maintaining and enhancing the relevance and value of the financial statement audit in the new “Big Data” era (AICPA, 2017). This dissertation suggests Visual analytics (VA) as an ADA tool to promote ADA adoption in auditing and proposes a new ADA methodology, named Visual Audit, to systematically integrate VA with current practice. The first essay gives comprehensive definitions of the VA-based ADA and the mature VA tool to help the auditing industry establish a consensus on what VA is and what VA tools can be used to facilitate VA-based ADA. The essay also provides a set of factors that should be considered when formulating strategies for VA initiatives in auditing firms. Those factors, including potential and perceived challenges, are organized, presented, and discussed. The second essay develops a new ADA methodology, named Visual Audit, to explain how VA can be integrated with current audit practices. In addition, a descriptive model, named Visual Audit Model, is also created to schematically summarize the Visual Audit methodology. The model demonstrates how exploratory and confirmatory analyses are performed, how actionable insights, hypotheses, and audit evidence are obtained, how auditors can provide a desired level of assurance through human-computer interactions, and how VA systems can be utilized to communicate information accurately, efficiently, and effectively to auditors via visualization. The third essay demonstrates how the Visual Audit methodology can be applied to a real audit case. It exhibits the effectiveness of Visual Audit in exposing and communicating the essential facts and potential anomalies hidden in a large hospital dataset using the popular VA tool, Tableau. After reviewing the data set, we identify three visual audit tasks and then illustrate these tasks by working through each visual audit loop composing the job.This dissertation attempts to contribute to the auditing literature by identifying the value that VA can add to audits. It informs practitioners that, under what circumstances, VA could represent a significant change regarding what VA is, how VA-based audit is performed, and the challenges that need to be addressed before adopting VA in auditing. The proposed Visual Audit methodology and its descriptive model can have many applications. The qualitative experience presented in the paper gives implications for those interested in adopting VA in the audit practice.
title: Παρακολούθηση ατμοσφαιρικών συνθηκών με χρήση αισθητήρων στο υπολογιστικό νέφος
title: Cloud intelligent monitoring atmosphere technology
Creators: name: Μαστορακης Λαμπρος
Publisher: name: Technical University of Crete
Year: 2014

description: Το CLIMATE (Cloud Intelligent Monitoring Atmosphere Technology) αποτελεί ένα διαδικτυακό σύστημα παρακολούθησης ατμοσφαιρικών συνθηκών με χρήση αισθητήρων στο «Νέφος» (Cloud). Μελετάει φυσικά μεγέθη της ατμόσφαιρας του περιβάλλοντος χώρου και λαμβάνει μετρήσεις για τις διακυμάνσεις τους. Σκοπός του συστήματος είναι να επεξεργάζεται τα δεδομένα των μετρήσεων προκειμένου να τα προσφέρει στους χρήστες ως χρήσιμη πληροφορία. Η λήψη και η επεξεργασία των δεδομένων, η παραμετροποίηση του συστήματος καθώς και η πιστοποίηση των χρηστών γίνεται αποκλειστικά συνδυάζοντας παρεχόμενες υπηρεσίες γενικού σκοπού και υπολογιστικούς πόρους που προσπελαύνονται διαδικτυακά και παρέχονται από υποδομές Νέφους. Το σύστημα μπορεί να εξυπηρετήσει ανάγκες χρηστών και οργανισμών προσφέροντας τη δυνατότητα, μέσω μιας διαδικτυακής διεπαφής, να παρακολουθούν τις διακυμάνσεις των φυσικών μεγεθών της ατμόσφαιρας σε συγκεκριμένους χώρους, να ενημερώνονται για τις μεταβολές των τιμών αυτών σε πραγματικό χρόνο και να έχουν πρόσβαση στο ιστορικό των μεταβαλλόμενων τιμών.
description: CLIMATE (Cloud Intelligent Monitoring Atmosphere Technology) is a Cloud based system for monitoring atmosphere conditions using environmental sensors. The application studies physical atmosphere attributes and takes measurements of their variation. The purpose of this system is to edit the data retrieved in order to offer them as useful information to users. The retrieval and the editing of data, the system configuration as also the users’ authorization are implemented combining Generic Enablers, services and resources provided through internet by Cloud infrastructures. CLIMATE services the needs of users and organizations to monitor the environmental conditions in specific places, to be informed about the changes of these conditions instantly and to have full access to the measurements’ record offering a web application with a graphical user interface.
title: Transforming ASEME roles models to process models
Creators: name: Μητακιδης Νεκταριος
Publisher: name: Technical University of Crete
Year: 2014

description: In this thesis we present how an engineer can transform a Gaia or ASEME role to a process model, compliant with the XML Process Definition Language (XPDL) portable standard. XPDL is a format standardized by the Workflow Management Coalition (WfMC) to interchange business process definitions between different workflow products. XPDL is currently the best file format for exchanging BPMN diagrams, because it has been designed specifically to store all aspects of a BPMN diagram.
An ASEME model is the Systems-Role Model (SRM). The thesis offers a transformation of the Systems-Role Model (SRM) to the XML Process Definition Language (XPDL), which is the XML of the Business Process Modeling Notation (BPMN). The transformation is achieved through Java source code. A tool is developed for aiding the modeler in the transformation process. The tool uses a recursive algorithm for automating the transformation process and guides the user to integrate two or more agent roles in a process model. The tool usage is demonstrated through a running example. Moreover, simulations of the transformed roles in an open source process management tool are offered in order to display the effectiveness and usage of the derived process model. The work fully demonstrates the transformation, the risks and the future of this effort.
title: Channel coding and detection for increased range bistatic scatter radio
Creators: name: Αλεβιζος Παναγιωτης
Publisher: name: Technical University of Crete
Year: 2014

description: Scatter radio, i.e communication by means of reflection, has emerged as a potential key-enabling
technology for ultra low-cost, large-scale, ubiquitous sensor networking. This
work jointly studies noncoherent detection and channel coding for scatter radio networks, with the ultimate goal to further extend communication range, compared to prior art. Specifically, this work focuses on frequency shift keying modulation (FSK) in bistatic scatter radio architectures, where carrier emitter is dislocated from the software defined radio receiver (SDR). FSK is ideal for the power limited regime and allows for simple, frequency division multiple access (FDMA) of simultaneously operating receiver-less sensors.
A novel composite hypothesis testing decoding rule is derived for noncoherent channel-encoded FSK, in bistatic scatter radio architectures. Such decoding rule is evaluated with short block length channel codes; the latter offer ultra-low encoding complexity, and thus, they are appropriate for resource-constraint scatter radio sensors. Reed-Muller and BCH codes are studied, due to their strong algebraic structure. It is shown that the proposed decoding scheme achieves high diversity order through interleaving. Extensive simulations
under Rician fading scenarios include the impact of carrier frequency offset estimation errors, channel coherence time and interleaving depth. Closed-form performance analysis is also provided. Theoretical analysis for maximum likelihood coherent detection and decoding in on-off keying modulation (OOK) is also presented. Furthermore, experimental measurements are conducted outdoors, with a commodity SDR reader and custom scatter radio sensor. Sensor-to-reader ranges up to 134 meters are experimentally demonstrated
with omnidirectional antennas and 13 dBm (20 milliWatt) transmission power. Coded setup offered 10 additional meters range extension compared to the state-of-the-art uncoded
noncoherent detection.
As a result, this thesis provided a simple solution that could further leverage the adoption of scatter radio in large-scale, ultra low-cost wireless sensor networks
Die Stadt der Surrealisten oder Eine junge Frau zwischen gewissenlosen Butterblümchen
Creators: name: Held, Laura
Publisher: name: AKMB-news: Informationen zu Kunst, Museum und Bibliothek
Year: 2023

description: Rezension zu: Britta Habekost: Stadt der Mörder. Kriminalroman. – 1. Auflage. – München : Penguin Verlag, 2021. – 461 Seiten. – ISBN 978-3-641-27746-8
description: AKMB-news: Informationen zu Kunst, Museum und Bibliothek, Bd. 28 Nr. 1 (2022): AKMB-news
Sample size re-estimation for confirmatory two-stage flexible multi-arm trial with normal outcomes
Creators: name: Li, Yan
name: Wang, Guoqiao
name: Szychowski, Jeff M.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: The need for efficient clinical trial designs has led to the development of flexible multi-arm designs. In this paper, we investigated sample size re-estimation (SSR) methods for fully flexible designs that allow for any unplanned treatment selection, early stopping for efficacy or futility. Even though SSR methods for two-arm trials are well developed, they are not directly applicable to certain fully flexible multi-arm trials due to the application of the closed test procedure. We derive SSR procedures based on the conditional power approach in the context of confirmatory multi-arm trials for three designs: inverse normal combination test, Fisher’s combination test and flexible group sequential design. We conduct extensive simulation studies to evaluate the performance of the three designs with and without SSR. Results show that the relative performance of the three designs depends on many factors. In practice, simulation studies are usually necessary to help determine the most appropriate design.
Dora Maar – Künstlerin und Muse
Creators: name: Gegenmantel, Antje
Publisher: name: AKMB-news: Informationen zu Kunst, Museum und Bibliothek
Year: 2023

description: Rezension zu: Bettina Storks: Dora Maar und die zwei Gesichter der Liebe. Picasso ist ihr Leben, die Kunst ihre Leidenschaft. Roman. – 1. Auflage, Originalausgabe. – Berlin : Aufbau Taschenbuch, 2021. – 451 Seiten. – (Mutige Frauen zwischen Kunst und Liebe; 18) (atb; 3797). – ISBN 978-3-7466-3797-6
description: AKMB-news: Informationen zu Kunst, Museum und Bibliothek, Bd. 28 Nr. 1 (2022): AKMB-news
Investigation and analysis of response behavior for a Tension Leg Platform under impulse and limit Loads (To investigate the phenomenon of tendon disconnection)
Creators: name: Belvasi, Navid
Publisher: name: Zenodo
Year: 2018
Subjects: Tension Leg Platform
Irregular Waves of the Sea
Artificial Time History
Equivalent Impulse Load of the sea
Tendon failure

description: Given the increasing development of exploitation of deepwater oil and gas resources, access to realistic solutions for analyzing and designing offshore platforms is a significant factor in facilitating the exploitation of oil and gas resources in these areas. There are many oil reservoirs in deep water beds, and a Tension leg platform (TLP), as a compliant structure, is suitable for oil extraction in deep water.
 The advantage of using these platforms is their low amplitude rotational DOFs. Surge motion The TLP is a 120-second long period; In high-amplitude and low period waves, the platform faces a tendon rupture due to high waves forces and bad weather conditions. These conditions are heavier and more prevalent in the harsh seas, such as the Gulf of Mexico and the North Sea.
 In principle, the momentary instability of the structure and the sudden moments caused during the tendon rupture are essential for analysis because the lack of examination of these cases due to the long duration of the wave power leads to unsustainability and inefficiency of the platform in inappropriate marine conditions.
 This thesis first explores the irregular waves of the sea and provides a suitable method for modelling the artificial time history of the sea elevations. Then, the formulation for modelling this random process is driven; moreover, a scientific and computational procedure for modelling the equivalent impact load to floater has been examined. In the end, the behaviour of a seastar TLP platform under these impact loads and the probability of tandem failure resulting from the sudden surges or pitch movements caused by these shock loads is studied. The entire process is developed coherently. Finally, these equivalent impulses have been compared numerically, and the most suitable impulse for use in this method is specified.
Aus und vorbei? – Übers Älterwerden, Nebenwirkungen und Folgen
Creators: name: Strzolka, Rainer
Publisher: name: AKMB-news: Informationen zu Kunst, Museum und Bibliothek
Year: 2023

description: Rezension zu: Johanna Adorján: Ciao. Roman. – Köln : Kiepen-heuer u. Witsch, 2021. – 268 Seiten. – ISBN 978-3-462-00171-6
description: AKMB-news: Informationen zu Kunst, Museum und Bibliothek, Bd. 28 Nr. 1 (2022): AKMB-news
Psychological Load & Coping in English Rugby Premiership
Creators: name: Mellalieu, Stephen
name: Sellars, Paul
Publisher: name: Cardiff Metropolitan University
Year: 2023
Subjects: classificationCode: 520107
subject: Sport and exercise psychology

description: Title: Psychological load & coping in English Rugby Premiership
Aim: Explore psychological demands experienced by individuals working within professional rugby union in England & how they cope with these demands.
Approach: Using a longitudinal mixed methods approach, the project investigated the psychological load (performance and life demands) faced by players in the English Rugby Premiership across two seasons, the strategies they used to cope with the load faced, and the subsequent impact upon their well-being.To provide a general over of the project and the findings an executive summary and three infographics were created:1 - Project overview2 - Key findings3 - Recommendations & work in progress