cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Comparability and Examination Performance: Technical and Social Approaches to Its Study
Creators: name: Benson, Ann Christine
Publisher: name: The Open University
Year: 2009

description: This thesis is concerned with examination comparability and the assumption that achieved grades in GCSE examinations have common currency across subjects. Technical treatments commonly used to investigate examination comparability are discussed along with the assumptions upon which they are based and their limitations. A variety of technical treatments, taking into account population sampling, tiering, coursework and cognitive skill demands, are used to investigate comparability for GCSE science results from Welsh and English examining groups. Examination comparability is shown to be undermined by fluctuations in relative ‘difficulty’ across time, different correlations between subjects, curriculum changes, and sub-group effects. Interviews with science teachers are then related to the technical findings to examine schools’, departments’ and individuals’ responses to national assessment structures and practices and how these mediate ‘gradeness’. The interviews’ initial focus on teachers’ tier entry decisions reveals that their judgements about students are constituted through interaction between their beliefs about mind, subjects and gendered behaviours amongst others, departmental and school practices, and wider social influences to do with national assessment and examining group policies and practices. The interviews show how structures and beliefs shape arena practices and teachers’ practice, the consequences for students’ access to science, and the consequent validity of assessments of their science ‘achievements’. The allocation of students to ability groups as they enter secondary school and the interactions between these groups and KS3 SAT tier allocation effectively ‘lock’ students on to an assessment pathway from Year 7 - a pathway which school structures make it almost impossible to break away from. The findings show how school practices and individual practice can disrupt or compound this and the consequences for students’ access to learning opportunities, which, the thesis argues, is a major source of invalidity in assessment that comparability studies cannot begin to take account of.
title: Discursive Analysis of the Accounts of Victims of Racist Incidents
Creators: name: Chahal, Kusminder
Publisher: name: The Open University
Year: 2009

description: In this study I focus on identifying power and processes of ‘Othering’ in the accounts of victims of racist incidents by identifying discursive repertoires and using Critical Discourse Analysis (CDA). By re-analysing in-depth interviews with victims of racist incidents I have been able to identify discursive repertoires that occur in the speech of those who are othered through their lived experience of racism. Practitioners of CDA have given limited attention to exploring the lived experiences of minority groups but this study has shown distinctive patters of self and other positioning in their discourse. Racist markers, actions that could only be explained in the context of racism, served as a powerful tool to exclude and act as a reminder of the non-acceptance of minority groups. These markers were constructed through discourses of the Other, repertoires such as disruption and disapproval acted through name-calling, gendered racism, a continuum of violence with consequences that included emotional (shame and embarrassment), psychological harm and spirit murder (or total harm) arising from the accumulation of everyday racist experiences. This study suggests that revisiting qualitative data is a productive activity and sheds new light on existing social issues and that by focusing on a reanalysis new perspectives can be drawn or examined that were not central to the original research. The study also suggests that more research may be required in exploring discourses of the Other as identified by the Other.
Community Service Learning Egg Carton Storage Facility Project
Creators: name: Van Hemmen, Cayley
name: Hajen, Christian
name: Zhang, Rocky
name: Sangha, Ricky
name: Gu, Bobby
name: Mercado, Ralph
Publisher: name: The University of British Columbia
Year: 2010

description: Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Gluonic Meson Production
Creators: name: Minkowski, Peter
name: Ochs, Wolfgang
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The existence of glueballs is predicted in QCD, the lightest one with quantum numbers J^{PC}=0^{++}, but different calculations do not well agree on its mass in the range below 1800 MeV. Several theoretical schemes have been proposed to cope with the experimental data which often have considerable uncertainties. Further experimental studies of the scalar meson sector are therefore important and we discuss recent proposals to study leading clusters in gluon jets and charmless B-decays to serve this purpose.
description: Talk at Ringberg Workshop "New Trens in HERA Physics 2003", Sept.28-Oct.3, 2003 (by W.O.), to appear in Proceedings, 12 pages, 2 figures
Agrilus villus Curletti & Brule 2011
Creators: name: Curletti, Gianfranco
name: Migliore, Letizia
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Buprestidae
Agrilus
Agrilus villus

description: Agrilus villus Curletti & Brûlé, 2011
 Agrilus villus Curletti & Brûlé, 2011: 24.
 Material examinado: BRASIL, Amapá, Rio Felício, 1 ex., 03.VIII.1969, J. Lane leg.
description: Published as part of Curletti, Gianfranco & Migliore, Letizia, 2014, O gênero Agrilus Curtis, 1829 nas coleções do Museu de Zoologia da Universidade de São Paulo (Coleoptera: Buprestidae), pp. 81-106 in Papéis Avulsos de Zoologia (São Paulo) (São Paulo) 54 (8) on page 99, DOI: 10.1590/0031-1049.2014.54.08, http://zenodo.org/record/4656297
Bayesian Inference for a Semi-Parametric Copula-based Markov Chain
Creators: name: Azam, Kazim
name: Pitt, Michael
name: Azam, Kazim
name: Pitt, Michael
Publisher: name: Unknown
Year: 2014
Subjects: subject: Financial Economics
subject: Bayesian copula
subject: discrete data
subject: order statistics
subject: semi-parametric
subject: time series

description: This paper presents a method to specify a strictly stationary univariate time series model with particular emphasis on the marginal characteristics (fat tailedness, skewness etc.). It is the first time in time series models with specified marginal distribution, a non-parametric specification is used. Through a Copula distribution, the marginal aspect are separated and the information contained within the order statistics allow to efficiently model a discretely-varied time series. The estimation is done through Bayesian method. The method is invariant to any copula family and for any level of heterogeneity in the random variable. Using count times series of weekly firearm homicides in Cape Town, South Africa, we show our method efficiently estimates the copula parameter representing the first-order Markov chain transition density.
Characterization of Jets in Relativistic Heavy Ion Collisions
Creators: name: Phatak, S. C.
name: Sahu, P. K.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Jet quenching is considered to be one of the signatures of the formation of quark gluon plasma. In order to investigate the jet quenching, it is necessary to detect jets produced in relativistic heavy ion collisions, determine their properties and compare those with the jets one obtains in hadron-hadron or $e^+-e^-$ collisions. In this work, we propose that calculation of flow parameters may be used to detect and characterize jets in relativistic heavy ion collisions.
description: 18 pages, 4 figures, more discussions are added, to be published in Phys. Rev. C
title: Power and Politeness: A Study of Social Interaction in Philippine Higher Education Classrooms
Creators: name: Victoria, Mabel Paderez
Publisher: name: The Open University
Year: 2008

description: Drawing upon naturalistic contextualized data, this study aims to expand current understanding of power and politeness in three higher education classrooms in the Philippines. It is particularly concerned to explore the usefulness of a politeness theory in describing the linguistic strategies that professors and students use when performing potentially face threatening acts. On the basis of data consisting of observation notes and audio recording, it is argued that (1) the difference in power between professors and students influences their choice of linguistic strategies. Professors used bald on-record language to ask lesson-related questions but oriented towards positive politeness rather than negative politeness when performing potentially face-threatening acts; students invoked negative politeness markers such as formal address forms, deference and hedging; (2) Pedagogical goals, lesson content, interactional context, and the presence and/or number of over hearers also exert pressure on the linguistic realisation of politeness. (3) The authoritative and discursive power of the professor over the students appears to be relatively fixed and unchallenged. But as the current investigation finds, there is another dimension to the professor-student relationship outside of the four walls of the classroom, where students, through one-to-one consultations, on-line discussions and journaling are afforded a less exposed, less face-threatening space.
Optimal Security Design under Asymmetric Information and Profit Manipulation
Creators: name: Koufopoulos, Kostas
name: Kozhan, Roman
name: Trigilia, Giulio
name: Koufopoulos, Kostas
name: Kozhan, Roman
name: Trigilia, Giulio
Publisher: name: Unknown
Year: 2014
Subjects: subject: Financial Economics
subject: Security design
subject: financial innovation
subject: capital structure
subject: asymmetric information
subject: venture captial

description: We consider a model of external financing under ex ante asymmetric information and profit manipulation (non verifiability). Contrary to conventional wisdom, the optimal contract is not standard debt, and it is not monotonic. Instead, it resembles a contingent convertible (CoCo) bond. In particular: (i) if the profit manipulation and/or adverse selection are not severe, there exists a unique separating equilibrium in CoCos; (ii) in the intermediate region, if the distribution of earnings is unbounded above there exists a unique pooling equilibrium in CoCos, otherwise debt might be issued but it is never the unique equilibrium; (iii) finally, if profit manipulation is severe, there is no financing. These findings suggest that the standard monotonicity constraint exogenously imposed in the security design literature must be reconsidered. Crucially, profit manipulation is part of the optimal contract, and non-monotonic, convertible securities mitigate the asymmetric information problem. We discuss milestone payments in venture capital as an application.
Aharonov-Bohm effect in higher genus materials
Creators: name: Sasaki, K.
name: Kawazoe, Y.
name: Saito, R.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Flux periodicity of conducting electrons on a closed surface with genus two $g=2$ (double torus) are investigated theoretically. We examine flux periodicity of the ground-state energy and of the wave functions as a function of applied magnetic field. A fundamental flux period of the ground-state energy is twice a fundamental unit of magnetic flux for uniformly applied magnetic field, which is shown to be valid for a simple ladder geometry and carbon double torus. Flux periodicity of the wave functions in a double torus is complicate as compared with a simple torus ($g=1$), and an adiabatic addition of magnetic fluxes does not provide a good quantum number for the energy eigenstates. The results are extended to higher genus materials and the implications of the results are discussed.
description: 4 pages, 6 figures
Physics-informed Neural Networks for Solving Nonlinear Diffusivity and Biot's equations
Creators: name: Kadeethum, Teeratorn
name: Jorgensen, Thomas M
name: Nick, Hamidreza M
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Machine Learning (cs.LG)
subject: Numerical Analysis (math.NA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: This paper presents the potential of applying physics-informed neural networks for solving nonlinear multiphysics problems, which are essential to many fields such as biomedical engineering, earthquake prediction, and underground energy harvesting. Specifically, we investigate how to extend the methodology of physics-informed neural networks to solve both the forward and inverse problems in relation to the nonlinear diffusivity and Biot's equations. We explore the accuracy of the physics-informed neural networks with different training example sizes and choices of hyperparameters. The impacts of the stochastic variations between various training realizations are also investigated. In the inverse case, we also study the effects of noisy measurements. Furthermore, we address the challenge of selecting the hyperparameters of the inverse model and illustrate how this challenge is linked to the hyperparameters selection performed for the forward one.
Search for the S=+1 pentaquarks in quenched lattice QCD
Creators: name: Takahashi, Toru T.
name: Umeda, Takashi
name: Onogi, Tetsuya
name: Kunihiro, Teiji
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We study spin $\frac12$ hadronic states in quenched lattice QCD to search for a possible $S=+1$ pentaquark resonance. Our work is the first systematic lattice QCD study which properly carries out the following analyses: {\it (1) the careful extraction of the first two low energy states with very high statistics and the variational method} and {\it (2) the study of volume dependences of eigenenergies and spectral weights to distinguish resonance states from scattering states}. Simulations are carried out on $8^3\times 24$, $10^3\times 24$, $12^3\times 24$ and $16^3\times 24$ lattices at $β$=5.7 with the standard plaquette gauge action and the Wilson quark action. Our result indicates the existence of a resonance state lying slightly above the NK threshold in $(I,J^P)=(0,\frac12^-)$ channel in quenched QCD.
description: Talk presented at the 23rd International Symposium on Lattice Field Theory "Lattice2005", Dublin, July 25-30, 2005; uses PoS.cls
title: Growing Old at the Movies: Cinema-Going As Spatialised Embodied Practice
Creators: name: Cochrane, Berry
Publisher: name: The Open University
Year: 2008

description: In film studies and the geography of film the convention of prioritising the film text as object of analysis has resulted in understandings of cinematic representation that rely on films being a somewhat stable entity with a fixed meaning. Recently both fields have begun to consider the material context of film-viewing alongside the body’s role in our understanding of film texts and the value of abstracted film analyses is being questioned. Engaging with gerontology and drawing on empirical work with women who attend matinees for the over-60s, this dissertation explores how understanding cinema-going as a spatialised embodied practice might impact on conventional understandings of the politics of cinematic representation. Working through Bourdieu’s theoretical framework, supplemented by the adoption of the go-along as method, the meaning of the body in the audience comes to be seen as existing in a co-constitutive relationship with the architecture of the cinema and the film on the screen. Film is seen as becoming cinema via the spectatorial body, requiring a more reflexive and situated approach to film analysis in which the politics of cinematic representation are acknowledged as fluid and (re)negotiated in the moment of cinema-going as practice.
The Wind of Change: Maritime Technology, Trade and Economic Development
Creators: name: Pascali, Luigi
name: Pascali, Luigi
Publisher: name: Unknown
Year: 2014
Subjects: subject: Financial Economics
subject: Steamship
subject: Gravity
subject: Globalization

description: The 1870-1913 period marked the birth of the Örst era of trade globalization. How did this tremendous increase in trade a§ect economic development? This work isolates a causality channel by exploiting the fact that the steamship produced an asymmetric change in trade distances among countries. Before the invention of the steamship, trade routes depended on wind patterns. The introduction of the steamship in the shipping industry reduced shipping costs and time in a disproportionate manner across countries and trade routes. Using this source of variation and a completely novel set of data on shipping times, trade, and development that spans the great majority of the world between 1850 and 1900, I Önd that 1) the adoption of the steamship was the major reason for the Örst wave of trade globalization, 2) only a small number of countries that were characterized by more inclusive institutions beneÖted from globalization, and 3) globalization exerted a negative effect on both urbanization rates and economic development in most other countries.
title: The Relationship Between the Political Process and the Governance of Human Embryo Research in the UK: The Case of Human Admixed (aka Hybrid) Embryos
Creators: name: Gillott, John Mark
Publisher: name: The Open University
Year: 2008

description: This dissertation analyses the relationship between the political process and the governance framework for embryo research in the UK with particular reference to and focus on the Human Fertilisation and Embryology Bill 2008 and the case of human admixed (aka hybrid) embryos. Two interrelated aspects are considered: the extent to which the recent political process has re-constructed the framework developed by Warnock and/or brought to the surface changes that occurred in the intervening period; and the use of the existing governance framework developed in the 1980s (The Warnock framework) as a political resource in the recent political and policy debates. A tentative evaluation of the merits of the governance framework as it emerges from the contemporary debates is suggested from the perspective of research and innovation.
Allesfitter: Flexible Star and Exoplanet Inference From Photometry and Radial Velocity
Creators: name: Günther, Maximilian N.
name: Daylan, Tansu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present allesfitter, a public and open-source python software for flexible and robust inference of stars and exoplanets given photometric and radial velocity data. Allesfitter offers a rich selection of orbital and transit/eclipse models, accommodating multiple exoplanets, multi-star systems, transit-timing variations, phase curves, stellar variability, star spots, stellar flares, and various systematic noise models including Gaussian Processes. It features both parameter estimation and Bayesian model selection, allowing to easily run either a Markov Chain Monte Carlo (MCMC) or Nested Sampling fit. For novice users, a graphical user interface allows to specify all input and perform analyses; for python users, all modules can be readily imported in any existing scripts. Allesfitter also produces publication-ready tables, LaTeX commands, and figures. The software is publicly available (https://github.com/MNGuenther/allesfitter), pip-installable (pip install allesfitter) and well documented (www.allesfitter.com). Finally, we demonstrate the software's capabilities on several examples and provide updates to the literature where possible for Pi Mensae, TOI-216, WASP-18, KOI-1003 and GJ 1243.
description: 36 pages, 15 figures, 9 tables, submitted to AAS journals
Quantum freeze of fidelity decay for chaotic dynamics
Creators: name: Prosen, Tomaz
name: Znidaric, Marko
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We show that the mechanism of quantum freeze of fidelity decay for perturbations with zero time-average, recently discovered for a specific case of integrable dynamics [New J. Phys. 5 (2003) 109], can be generalized to arbitrary quantum dynamics. We work out explicitly the case of chaotic classical counterpart, for which we find semi-classical expressions for the value and the range of the plateau of fidelity. After the plateau ends, we find explicit expressions for the asymptotic decay, which can be exponential or Gaussian depending on the ratio of the Heisenberg time to the decay time. Arbitrary initial states can be considered, e.g. we discuss coherent states and random states.
description: 4 pages, 3 ps figures ; v2 corrected mistake in formula for t_2
title: The Commodification of the Celebrity Portrait: An Analysis of Photographic Business Practice in Relation to Image Mass Production in London c.1857-1880
Creators: name: Lamb, Jane
Publisher: name: The Open University
Year: 2019

description: The mass-produced carte de visite was a new kind of celebrity portrait. It was affordable and available to a wide middle-class market, and it was hugely popular in the 1860s and 1870s. The cartes are extant in large numbers today and offer a valuable Victorian archive ripe for investigation, yet they have, so far, been deemed of little historical value, and consequently have been under-researched in the history of photography. This thesis is centred around a large collection of over one thousand celebrity cartes de visite in the author’s possession. Patterns running through the archive have been identified, and show that a great deal can be learnt about photographers’ business strategies and middle-class society from the images. The first half of the thesis explores the structure of the new carte de visite business in two chapters: in its commercial organisation and in the construction and presentation of the product to a target middle-class market. The establishment of a new profession is highlighted in which commercial activity was displayed more openly on the product as the century progressed, and in which widened middle-class interests were presented in content. Three following case studies provide a deeper investigation in relation to particular subject areas, those of monarchy, government and Church, chosen especially as they were traditional portrait areas used to define the British constitution. These case studies show that studios adapted their output to meet collectors’ changing views on the role of celebrity whilst retaining an underlying representation of the ‘character’ of a new enlightened society. The thesis spotlights a new archive through which a clearer understanding of mid-Victorian business and society can be gained: the research therefore not only fills a gap in photographic history, but adds to knowledge on mid-Victorian middle-class culture.
Enhancement of Macroscopic Quantum Tunneling by Landau-Zener Transitions
Creators: name: Ankerhold, Joachim
name: Grabert, Hermann
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Motivated by recent realizations of qubits with a readout by macroscopic quantum tunneling in a Josephson junction, we study the problem of barrier penetration in presence of coupling to a spin-${1\over 2}$ system. It is shown that when the diabatic potentials for fixed spin intersect in the barrier region, Landau- -Zener transitions lead to an enhancement of the tunneling rate. The effect of these spin flips in imaginary time is in qualitative agreement with experimental observations.
description: 5 pages, corrected typos
AN EMPIRICAL ANALYSIS OF TECHNOLOGICAL CHANGE AND FUNCTIONAL INCOME DISTRIBUTION IN RICE PRODUCTION IN BIHAR AGRICULTURE
Creators: name: Thakur, Jawahar
name: Sinha, D. K.
name: Thakur, Jawahar
name: Sinha, D. K.
Publisher: name: Unknown
Year: 1994
Subjects: Crop Production/Industries
Research and Development/Tech Change/Emerging Technologies

description: The paper discusses the mechanics for decomposing the total change in per hectare rice output owitig to inception of new production technology among various components, as well as to ascertain the technical bias of the new rice production technology with respect to different factor inputs especially in the north and south regions of Bihar. The analysis reveals that the contribution of new rice production technology is more pronounced in southern region as compared to the northern region of the state. With the introduction of high yielding varieties of rice, per hectare production was found to be 43.47 per cent and 47.77 per cent higher in northern and southern regions, resp.ectively. Moreover, the technological bias with respect to factor inputs in rice production was estimated as land and labour saving as well as fertilizer, and capital using in northern region, though it was found to be statistically non-significant. In southern region of the state, technological bias was observed as labour, fertilizer and capital using on one hand and land-saving on the other. However, the technical bias was found to be statistically significant only in case of capital and land.
On Bouncing Brane-Worlds, S-branes and Branonium Cosmology
Creators: name: Burgess, C. P.
name: Quevedo, F.
name: Rabadan, R.
name: Tasinato, G.
name: Zavala, I.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present several higher-dimensional spacetimes for which observers living on 3-branes experience an induced metric which bounces. The classes of examples include boundary branes on generalised S-brane backgrounds and probe branes in D-brane/anti D-brane systems. The bounces we consider normally would be expected to require an energy density which violates the weak energy condition, and for our co-dimension one examples this is attributable to bulk curvature terms in the effective Friedmann equation. We examine the features of the acceleration which provides the bounce, including in some cases the existence of positive acceleration without event horizons, and we give a geometrical interpretation for it. We discuss the stability of the solutions from the point of view of both the brane and the bulk. Some of our examples appear to be stable from the bulk point of view, suggesting the possible existence of stable bouncing cosmologies within the brane-world framework.
description: 35 pages, 7 figures, JHEP style. Title changed and references added
Agrilus posticalis Gory & Laporte 1837
Creators: name: Curletti, Gianfranco
name: Migliore, Letizia
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Buprestidae
Agrilus
Agrilus posticalis

description: Agrilus posticalis Gory & Laporte, 1837
 Agrilus posticalis Gory & Laporte, 1837: 6.
 Material examinado: BRASIL, Minas Gerais, Pouso Alegre, 1 ex., I.1960, Pe. Pereira leg., Cobos det. 1963.
description: Published as part of Curletti, Gianfranco & Migliore, Letizia, 2014, O gênero Agrilus Curtis, 1829 nas coleções do Museu de Zoologia da Universidade de São Paulo (Coleoptera: Buprestidae), pp. 81-106 in Papéis Avulsos de Zoologia (São Paulo) (São Paulo) 54 (8) on page 104, DOI: 10.1590/0031-1049.2014.54.08, http://zenodo.org/record/4656297
Harvest Hut Waste Redirection Site
Creators: name: Baysheva, Anastasia
name: Bragagnini, Daniel
name: Elliot, Thomas
name: Forrest, Chris
name: Nocos, Adrian
name: Yii, Elliot
Publisher: name: The University of British Columbia
Year: 2010

description: Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
title: Indigenous-Hybrid Organisations in Colombia: A Multi-Level Analysis within the Buen Vivir Model
Creators: name: Morales Pachon, Andres
Publisher: name: The Open University
Year: 2019

description: There has been a recent increase in the number of publications about the indigenous philosophy of Buen Vivir (BV) as an alternative paradigm to mainstream development theory. However, there is a dearth of theoretically grounded empirical research that interrogates the impact of BV as an alternative development model within the social and solidarity economy (SSE) in Latin America. Therefore, this thesis aims to address this research gap by investigating the development of indigenous community based organisations (ICOs) that are located within the SSE in Colombia, examining to what extent their experiences embody key tenets of the BV model. By drawing upon insights from post-development (BV) and postcolonial theories (Bhabha’s mimicry and hybridity), this thesis develops and critically explores a multi-level model for understanding the development of ICOs in Colombia, considering the micro, meso and macro levels. Using participatory video research, this research draws upon evidence from a multiple case study research with five indigenous communities (Curripaco, Puinave, Yanacona, Misak and Wayuu) in three geographic regions (the Amazons, Cauca and Guajira). The thesis uses the following types of data collection: secondary data sources, video focus groups, video semi-structured interviews, observations and field notes. The analysis of the multiple case study using Nvivo, discovers that ICOs operate as hybrid organisations that are influenced by their indigenous cultural practices, as well as the dominant Western forms legitimised by the SSE norms (mimicry). Overall, this thesis reveals that the ICOs’ experiences are consistent with the values and pillars that embody the key tenets of the BV model. The findings demonstrate that the current policy discourse provides little scope for engagement for ICOs in Colombia, even though evidence shows their contribution to the national economy. In doing so, this thesis offers an opportunity for policy makers to rethink and re-evaluate the existing policies in relation to indigenous communities and the SSE sector, to provide a pathway consistent with some elements of the BV model to contribute to the national development plan.
Acoustic diamond resonators with ultra-small mode volumes
Creators: name: Schmidt, Mikołaj K.
name: Poulton, Christopher G.
name: Steel, Michael J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Quantum acoustodynamics (QAD) is a rapidly developing field of research, offering possibilities to realize and study macroscopic quantum-mechanical systems in a new range of frequencies, and implement transducers and new types of memories for hybrid quantum devices. Here we propose a novel design for a versatile diamond QAD cavity operating at GHz frequencies, exhibiting effective mode volumes of about $10^{-4}λ^3$. Our phononic crystal waveguide cavity implements a non-resonant analogue of the optical lightning-rod effect to localize the energy of an acoustic mode into a deeply-subwavelength volume. We demonstrate that this confinement can readily enhance the orbit-strain interaction with embedded nitrogen-vacancy (NV) centres towards the high-cooperativity regime, and enable efficient resonant cooling of the acoustic vibrations towards the ground state using a single NV. This architecture can be readily translated towards setup with multiple cavities in one- or two-dimensional phononic crystals, and the underlying non-resonant localization mechanism will pave the way to further enhance optoacoustic coupling in phoxonic crystal cavities.
On the order problem in construction of unitary operators for the Variational Quantum Eigensolver
Creators: name: Izmaylov, Artur F.
name: Díaz-Tinoco, Manuel
name: Lang, Robert A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: One of the main challenges in the Variational Quantum Eigensolver (VQE) framework is construction of the unitary transformation. The dimensionality of the space for unitary rotations of $N$ qubits is $4^N-1$, which makes the choice of a polynomial subset of generators exponentially difficult process. Moreover, due to non-commutativity of generators, the order in which they are used strongly affects results. Choosing the optimal order in a particular subset of generators requires testing the factorial number of combinations. We propose an approach based on the Lie algebra - Lie group connection and corresponding closure relations that systematically eliminates the order problem.
Agrilus pyrosurus Gory & Laporte 1837
Creators: name: Curletti, Gianfranco
name: Migliore, Letizia
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Buprestidae
Agrilus
Agrilus pyrosurus

description: Agrilus pyrosurus Gory & Laporte, 1837
 Agrilus pyrosurus Gory & Laporte, 1837: 7.
 Material examinado: BRASIL, Gôiania, Dianópolis, 1 ex.
description: Published as part of Curletti, Gianfranco & Migliore, Letizia, 2014, O gênero Agrilus Curtis, 1829 nas coleções do Museu de Zoologia da Universidade de São Paulo (Coleoptera: Buprestidae), pp. 81-106 in Papéis Avulsos de Zoologia (São Paulo) (São Paulo) 54 (8) on page 104, DOI: 10.1590/0031-1049.2014.54.08, http://zenodo.org/record/4656297
Truncations driven by constraints: consistency and conditions for correct upliftings
Creators: name: Pons, Josep M.
name: Talavera, Pere
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the mechanism of truncations driven by the imposition of constraints. We show how the consistency of such truncations is controlled, and give general theorems that establish conditions for the correct uplifting of solutions. We show in some particular examples how one can get correct upliftings from 7d supergravities to 10d type IIB supergravity, even in cases when the truncation is not initially consistent by its own.
description: Latex, 23 pages
title: Volcanic Archives of Past Glacial Environments: Tindfjallajökull Volcano, Iceland
Creators: name: Moles, Jonathan
Publisher: name: The Open University
Year: 2019

description: Volcanoes preserve evidence of past glacial environments in the characteristics of their erupted products and in the sediments and landforms that occupy their flanks. By investigating volcanic stratigraphies and by dating palaeoenvironmental evidence, the glacial history of volcanic regions can be reconstructed. This thesis presents a geological and palaeoenvironmental survey of Tindfjallajökull volcano (Eastern Volcanic Zone, Iceland), followed by a focussed study of the glacial environments associated with the Ring Fracture Rhyolites eruption of neighbouring Torfajökull volcano.

 Geological mapping, supplemented by whole-rock geochemistry and 40Ar/39Ar geochronology, gives insights into the evolution of Tindfjallajökull during the late Pleistocene. Prior to 358 ± 15 ka, a basalt-dominated stratocone of lavas and fragmental rocks was constructed, which was then capped with rhyolitic and basaltic lavas. Following this stage, there was a period of erosion and further rhyolitic volcanism occurred in the area of the present-day summit (126 ± 18 ka). Minor basaltic to trachyandesitic and basaltic andesitic flank eruptions continued through to the end of the last glacial period. Eruptions have commonly interacted with ice and the resulting glaciovolcanic deposits provide a record of fluctuating glacial environments on the volcano.

 The Torfajökull Ring Fracture Rhyolites eruption (~55 ka) breached an ice sheet >400 m thick, dispersing tephra ‘II-RHY-1’ up to 2300 km from Iceland and depositing the Thórsmörk Ignimbrite in an area of little or no ice ~30 km from source. Due to the presence of the II-RHY-1 tephra horizon in regional palaeoclimate records (e.g. the Greenland ice cores), the eruption can be precisely dated to the end of Greenland Interstadial 15.2. The widely dispersed products of the eruption are used to reconstruct coeval glacial environments in southern Iceland and across the wider North Atlantic region.
On the position of nodes of plane curves
Creators: name: Huerta, Cesar Lozano
name: Ryan, Tim
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: The Severi variety $V_{d,n}$ of plane curves of a given degree $d$ and exactly $n$ nodes admits a map to the Hilbert scheme $\mathbb{P}^{2[n]}$ of zero-dimensional subschemes of $\mathbb{P}^2$ of degree $n$. This map assigns to every curve $C\in V_{d,n}$ its nodes. For some $n$, we consider the image under this map of many known divisors of the Severi variety and its partial compactification. We compute the divisor classes of such images in Pic$(\mathbb{P}^{2[n]})$ and provide enumerative numbers of nodal curves. We also answer directly a question of Diaz-Harris about whether the canonical class of the Severi variety is effective.
description: 6 pages. Comments or suggestions welcome
Supplementary Material for Pfizer’s Lyme Disease Vaccine Candidate (VLA15) Pipeline
Creators: name: Fadel, Suki
Publisher: name: Pfizer
Year: 2025
Subjects: classificationCode: 329999
subject: Other biomedical and clinical sciences not elsewhere classified

description: Congress materials may include information for investigational products or for which the product is not approved and/or inconsistent with the product uses described in the Prescribing Information. Regulatory approval of investigational products or uses is dependent on the completion of the study programs and review by regulatory authorities. Pfizer does not suggest or recommend the use of Pfizer Products in any manner other than as described in the Prescribing Information. The clinical trial information is available at www.clinicaltrials.gov. This information is current as of February 2025.
Electron Scattering in Liquid Water and Amorphous Ice: A Striking Resemblance
Creators: name: Signorell, Ruth
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The lack of accurate low-energy electron scattering cross sections for liquid water is a substantial source of uncertainty in the modelling of radiation chemistry and biology. The use of existing amorphous ice scattering cross sections for lack of liquid data has been discussed controversially over decades. Here, we compare experimental photoemission data of liquid water with corresponding predictions using amorphous ice cross sections, with the aim of resolving the debate regarding the difference of electron scattering in liquid water and amorphous ice. We find very similar scattering properties in the liquid and the ice for electron kinetic energies up to a few hundred electron volts. The scattering cross sections recommended here for liquid water are an extension of the amorphous ice cross sections. Within the framework of currently available experimental data, our work answers one of the most debated questions regarding electron scattering in liquid water.
Multiple Andreev Reflections in a Carbon Nanotube Quantum Dot
Creators: name: Buitelaar, M. R.
name: Belzig, W.
name: Nussbaumer, T.
name: Babic, B.
name: Bruder, C.
name: Schoenenberger, C.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report resonant multiple Andreev relections in a multiwall carbon nanotube quantum dot coupled to superconducting leads. The position and magnitude of the subharmonic gap structure is found to depend strongly on the level positions of the single-electron states which are adjusted with a gate electrode. We discuss a theoretical model of the device and compare the calculated differential conductance with the experimental data. (pdf including figures, see: www.unibas.ch/phys-meso/Research/Papers/2003/MAR-MWNT.pdf)
description: pdf including figures, see: http://www.unibas.ch/phys-meso/Research/Papers/2003/MAR-MWNT.pdf
Agrilus ruficollis
Creators: name: Curletti, Gianfranco
name: Migliore, Letizia
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Buprestidae
Agrilus
Agrilus ruficollis

description: Agrilus ruficollis (Fabricius, 1787)
 Buprestis ruficollis Fabricius, 1787: 184.
 Material examinado: BRASIL. São Paulo, São Paulo (Ipiranga), 1 ex., 17. XII.1907, Luederwaldt leg. Kerremans det.
description: Published as part of Curletti, Gianfranco & Migliore, Letizia, 2014, O gênero Agrilus Curtis, 1829 nas coleções do Museu de Zoologia da Universidade de São Paulo (Coleoptera: Buprestidae), pp. 81-106 in Papéis Avulsos de Zoologia (São Paulo) (São Paulo) 54 (8) on page 104, DOI: 10.1590/0031-1049.2014.54.08, http://zenodo.org/record/4656297
Photoluminescence of p-doped quantum wells with strong spin splitting
Creators: name: Kossacki, P.
name: Boukari, H.
name: Bertolini, M.
name: Ferrand, D.
name: Cibert, J.
name: Tatarenko, S.
name: Gaj, J. A.
name: Deveaud, B.
name: Ciulin, V.
name: Potemski, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The spectroscopic properties of a spin polarized two-dimensional hole gas are studied in modulation doped (Cd,Mn)Te quantum wells. The giant Zeeman effect induces a significant spin splitting even at very small values of the applied field. Several methods of measuring the carrier density (Hall effect, filling factors of the Landau levels at high field, various manifestations of Moss-Burstein shifts) are described and calibrated. The value of the spin splitting needed to fully polarize the hole gas, evidences a strong enhancement of the spin susceptibility of the hole gas due to carrier-carrier interaction. At small values of the spin splitting, whatever the carrier density (non zero) is, photoluminescence lines are due to the formation of charged excitons in the singlet state. Spectral shifts in photoluminescence and in transmission (including an "excitonic Moss-Bustein shift") are observed and discussed in terms of excitations of the partially or fully polarized hole gas. At large spin splitting, and without changing the carrier density, the singlet state of the charged exciton is destabilized in favour of a triplet state configuration of holes. The binding energy of the singlet state is thus measured and found to be independent of the carrier density (in contrast with the splitting between the charged exciton and the neutral exciton lines). The state stable at large spin splitting is close to the neutral exciton at low carrier density, and close to an uncorrelated electron-hole pair at the largest values of the carrier density achieved. The triplet state gives rise to a characteristic double-line structure with an indirect transition to the ground state (with a strong phonon replica) and a direct transition to an excited state of the hole gas.
Agrilus siren Gory 1841
Creators: name: Curletti, Gianfranco
name: Migliore, Letizia
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Buprestidae
Agrilus
Agrilus siren

description: Agrilus siren Gory, 1841
 Agrilus siren Gory, 1841: 211.
 Material examinado: BRASIL, Minas Gerais, Mar de Espanha, 1 ex., 29.III.1908 J.F. Zikán leg.
description: Published as part of Curletti, Gianfranco & Migliore, Letizia, 2014, O gênero Agrilus Curtis, 1829 nas coleções do Museu de Zoologia da Universidade de São Paulo (Coleoptera: Buprestidae), pp. 81-106 in Papéis Avulsos de Zoologia (São Paulo) (São Paulo) 54 (8) on page 104, DOI: 10.1590/0031-1049.2014.54.08, http://zenodo.org/record/4656297
Sub-nanotesla magnetometry with a fibre-coupled diamond sensor
Creators: name: Patel, R. L.
name: Zhou, L. Q.
name: Frangeskou, A. C.
name: Stimpson, G. A.
name: Breeze, B. G.
name: Nikitin, A.
name: Dale, M. W.
name: Nichols, E. C.
name: Thornley, W.
name: Green, B. L.
name: Newton, M. E.
name: Edmonds, A. M.
name: Markham, M. L.
name: Twitchen, D. J.
name: Morley, G. W.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Sensing small magnetic fields is relevant for many applications ranging from geology to medical diagnosis. We present a fiber-coupled diamond magnetometer with a sensitivity of (310 $\pm$ 20) pT$/\sqrt{\text{Hz}}$ in the frequency range of 10-150 Hz. This is based on optically detected magnetic resonance of an ensemble of nitrogen vacancy centers in diamond at room temperature. Fiber coupling means the sensor can be conveniently brought within 2 mm of the object under study.
Cool Gas and Massive Stars - the Nuclear Ring in M100
Creators: name: Allard, Emma L.
name: Peletier, Reynier F.
name: Knapen, Johan H.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The SAURON integral field spectrograph was used to observe the central area of the barred spiral galaxy M100 (NGC 4321). M100 contains a nuclear ring of star formation, fueled by gas channeled inward by the galaxy's bar. We present maps of emission line strengths, absorption line strength indices, and the gas velocity dispersion across the field. The H beta emission is strongest in the ring, along two curved bar dustlanes and at the ends of the bar. The Mg b absorption line strength shows a younger population of stars within the ring as compared to the surrounding area. The gas velocity dispersion is notably smaller than elsewhere in the field both in the ring and along the leading edge of the dustlanes. Low gas dispersion is correlated spatially with the H beta emission. We thus see stars being formed from cold (low dispersion) gas which is being channeled inward along the dustlanes under the influence of a large bar, and accumulated into a ring near the location of the inner Lindblad resonances. This lends further strong support to the interpretation of nuclear rings in barred galaxies as resonance phenomena.
description: 10 pages, 1 figure. Accepted for publication in ApJ Letters. Version with high resolution figure can be found at http://star.herts.ac.uk/~allard/M100_ApJL.ps