cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: An Exploration Of The Development Of Resilience In Student Midwives.
Creators: name: Williams, Jacqueline
Publisher: name: The Open University
Year: 2020

description: Student midwives have to complete a demanding programme to become a midwife, and therefore it is questioned whether they need resilience to be successful. The study‟s aims were to explore whether resilience developed in one cohort of 25 undergraduate student midwives and what the concept of resilience meant to them. This study adopted a longitudinal case study approach, in one Higher Education Institution (HEI) in England, during the first 18 months of their programme. The study used Wagnild and Young‟s (1993) (updated 2015) True Resilience Scale©, administered on three occasions. Additionally, four focus groups were conducted twice and six participants were involved in one-to-one interviews, to explore issues raised in the focus group. Version 24 of the Statistical Package for the Social Sciences (SPSS) was used to analyse the findings of the True Resilience Scale©. Pairwise comparisons revealed that there were significant differences in True Resilience Scale© scores between the first and the second completion (p= 0.034) and time 1 and time 3 (p= 0.002); there were no significant differences between time 2 and time 3 (p=1.0). In this cohort of student midwives the scale showed that the majority had developed their resilience during the study. The qualitative data were thematically analysed using Braun and Clarke‟s (2013) stages. The participants described themselves as developing resilience despite the programme being very hard. They believed that being passionate about midwifery, being adaptable and learning from reflection was key to being resilient as a student midwife. The importance of support and belonging in clinical practice and their mentors were key to success. Despite the challenges they encountered on the programme, they felt supported and prepared to become midwives. A model, which defines resilience for student midwives, is presented for consideration in midwifery curricula to strengthen how reflexivity is taught and supported.
Transport approach to the superconducting proximity effect in carbon nanotubes
Creators: name: Gonzalez, J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A microscopic approach is developed to account for the magnitudes of the supercurrents observed experimentally in carbon nanotubes placed between superconducting contacts. We build up a model for the nanotube ropes encompassing the electron repulsion from the Coulomb interaction and the effective attraction given by phonon exchange. We show that the available experimental data are consistent with the expected decay of the supercurrents along the length of the nanotube samples. Our results stress that the propagation of the Cooper pairs is favored in the thick ropes, as a consequence of the reduction in the strength of the Coulomb interaction from the electrostatic coupling between the metallic nanotubes. We also provide an explanation for the temperature dependence of the supercurrents observed in the experiments, remarking the existence of a crossover from a very flat behavior at low temperatures to a pronounced decay in the long nanotubes.
description: 16 pages, submitted to J. Phys.: Condens. Matter (special issue on Nanostructured Surfaces)
title: ÐÐ²ÑÐ¾Ð¼Ð¾Ð±Ð¸Ð»ÑÐ½ÑÐ¹ Ð´Ð¸Ð·ÐµÐ»ÑÐ½ÑÐ¹ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ Ð¼Ð¾ÑÐ½Ð¾ÑÑÑÑ 140 ÐºÐÑ Ñ Ð°ÐºÐºÑÐ¼ÑÐ»ÑÑÐ¾ÑÐ½Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ð¾Ð¹ ÑÐ¾Ð¿Ð»Ð¸Ð²Ð¾Ð¿Ð¾Ð´Ð°ÑÐ¸
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Automotive diesel engine with a power of 140 kW with a battery fuel supply system
Creators: name: ÐÑÐ¼Ð°ÐµÐ², Ð­Ð¼Ð¸Ð»Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2024
Subjects: ÐÐ²ÑÐ¾Ð¼Ð¾Ð±Ð¸Ð»ÑÐ½ÑÐµ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ð¸ Ð´Ð¸Ð·ÐµÐ»Ñ
ÐÐ²Ð¸Ð³Ð°ÑÐµÐ»Ð¸ Ð´Ð¸Ð·ÐµÐ»Ñ
ÑÐ°Ð±Ð¾ÑÐ¸Ð¹ Ð¿ÑÐ¾ÑÐµÑÑ
Ð´Ð²ÑÑ ÑÐ°Ð·Ð½ÑÐ¹ Ð²Ð¿ÑÑÑÐº
Ð´Ð¸Ð½Ð°Ð¼Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ°ÑÑÐµÑ
Ð¿ÑÐ¾ÑÐ½Ð¾ÑÑÐ½Ð¾Ð¹ ÑÐ°ÑÑÐµÑ
working process
two-phase injection
dynamic calculation
strength calculation

description: ÐÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÑÐ½ ÑÐ°ÑÑÑÑ Ð°ÐºÐºÑÐ¼ÑÐ»ÑÑÐ¾ÑÐ½Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ ÑÐ¾Ð¿Ð»Ð¸Ð²Ð¾Ð¿Ð¾Ð´Ð°ÑÐ¸ Ð´Ð¸Ð·ÐµÐ»ÑÐ½Ð¾Ð³Ð¾ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ Ð´Ð¸Ð·ÐµÐ»Ñ ÑÐ°Ð·Ð¼ÐµÑÐ½Ð¾ÑÑÑÑ 8.3/9.9 Ñ Ð½Ð°Ð´Ð´ÑÐ²Ð¾Ð¼ Ð¸ Ð¾ÑÐ»Ð°Ð¶Ð´ÐµÐ½Ð¸ÐµÐ¼ Ð½Ð°Ð´Ð´ÑÐ²Ð¾ÑÐ½Ð¾Ð³Ð¾ Ð²Ð¾Ð·Ð´ÑÑÐ°. ÐÐ¿ÑÐ¸Ð¼Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½ ÑÐ°Ð±Ð¾ÑÐ¸Ð¹ Ð¿ÑÐ¾ÑÐµÑÑ, Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¾ Ð²Ð»Ð¸ÑÐ½Ð¸Ðµ Ð´Ð²ÑÑÑÐ°Ð·Ð½Ð¾Ð³Ð¾ Ð²Ð¿ÑÑÑÐºÐ°. ÐÑÐ¸Ð²ÐµÐ´ÐµÐ½Ñ Ð´Ð¸Ð½Ð°Ð¼Ð¸ÑÐµÑÐºÐ¸Ð¹ Ð¸ Ð¿ÑÐ¾ÑÐ½Ð¾ÑÑÐ½Ð¾Ð¹ ÑÐ°ÑÑÑÑÑ, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¿ÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½Ð¾ ÑÑÐ°Ð²Ð½Ð¾Ð²ÐµÑÐ¸Ð²Ð°Ð½Ð¸Ðµ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ. Ð Ð°Ð±Ð¾ÑÐ° Ð²ÐºÐ»ÑÑÐ°ÐµÑ Ð² ÑÐµÐ±Ñ Ð¾Ð±Ð·Ð¾ÑÐ½ÑÑ ÑÐ°ÑÑÑ, Ð¾Ð¿Ð¸ÑÐ°Ð½Ð¸Ðµ ÑÐ°ÑÑÐµÑÐ½ÑÑ Ð¼ÐµÑÐ¾Ð´Ð¸Ðº, ÑÐ°ÑÑÐµÑÐ½ÑÑ ÑÐ°ÑÑÑ Ð¸ Ð²ÑÐ²Ð¾Ð´Ñ Ð¾ ÑÐµÐ»ÐµÑÐ¾Ð¾Ð±ÑÐ°Ð·Ð½Ð¾ÑÑÐ¸ Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ.
description: In this work was produced the calculation of the fuel supply system for a diesel engine, with dimension 8.3/9.9 diesel engine was taken as prototype with supercharging and charge-air cooling. The combustion process is optimized, with influence of the two-phase injection. Dynamic and strength calculations are given, and the engine is balanced. The work includes a review part, a description of calculation methods, a calculation part and conclusions about the practicability of this work.
Hopes and disappointments: regime change and support for democracy after the Arab Uprisings
Creators: name: M. Tahir Kilavuz
name: Sumaktoyo, Nathanael Gratias
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Molecular Biology
subject: Neuroscience
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: What happened to citizens’ support for democracy after the Arab Uprisings? Did the support increase, stay the same, or actually decrease after all the protests, regime changes, and reforms? Which theories of citizens’ political attitudes best explain these dynamics? Analysing two waves of the Arab Barometer surveys and employing an item-response method that offers methodological improvements compared to previous studies, this article finds that support for democracy actually decreased in countries that successfully overthrew their dictators during the Uprisings. Following the arguments that emphasize the rational evaluations of citizens, it argues that in countries that had an experience with a freer political system, such as Egypt, Tunisia, and Yemen, challenges of democratization and the poor political and economic performances of the governments left citizens disappointed. Despite the hopes that people had at the onset of the Uprisings, the disappointments generated by the unmet expectations eventually led to a decline in support for democracy.
The welfare impact of mechanization of sugarcane production in São Paulo – Brazil
Creators: name: Soares, Pedro
name: Perrin, Richard K.
name: Fulginiti, Lilyan E.
name: Soares, Pedro
name: Perrin, Richard K.
name: Fulginiti, Lilyan E.
Publisher: name: Unknown
Year: 2019
Subjects: Production Economics

description: Presentation ID 16441
title: The Influence of Bank-Based and Capital Market-Based Impact Investments on SME Financing in Ghana: Governance, Strategy Change and Impacts
Creators: name: Lamptey, R.O.
Publisher: name: The Open University
Year: 2020

description: Impact investing, defined as direct investments into funds, small and medium-sized enterprises (SMEs) and viable non-profit social enterprises with intentionality to simultaneously realise social impact and financial returns is increasingly attracting the attention of academics and industry practitioners. A contentious claim is that impact investment, as transformational in its approach to entrepreneurial financing, is a panacea to SME financing constraints and solutions to intractable societal problems, is contestable considering the myriad of developmental challenges in Bottom-of-the-Pyramid (BoP) communities in the developing world. Based on an empirical investigation of the influences of finance first and impact first investments into bank-based and capital market-based funds on SMEs in Ghana, this thesis interrogates this claim. Specifically, the thesis argues that though impact investing represents an innovation in private sector approaches to development, the extent to which it can achieve the much-hyped societal transformation in BoP communities cannot be substantiated. This research contributes to the above debate by critically investigating the influences of impact investment funds on investee SMEs through an integrated theoretical framework. The framework draws on the literature from different disciplines including impact investing, social entrepreneurship, strategic management, financial intermediation, economics, SME management and concepts of governance, strategy change and impacts, which was then applied within the research setting of Ghana. Empirically, the thesis develops two case studies of bank-based and capital market-based funds into SMEs, respectively. Qualitative research was employed with data collection comprising in-depth interviews, rapid participant observation complemented by documentary evidence. Findings reveal that the distinctiveness of finance and impact first investors reflect their choices of bank and capital market-based intermediary used resulting in pluralistic, entrepreneurial financing options for categories of SMEs targeted for social impact and financial returns. These findings have implication for fund managers, SME owner-managers and policymakers due to private sector-driven developmental model by impact investors.
title: Selective or less selective : what can data tell us
Creators: name: Fauconnet, Laurence
name: Rochet, Marie-Joëlle
name: Trenkel, Verena
name: Morandeau, Gilles
name: Caill-Milly, Nathalie
Publisher: name: ASC 2012 - Theme session C
Year: 2024
Subjects: Fisheries and aquaculture

description: No abstracts are to be cited without prior reference to the author.To develop an ecosystem approach to fisheries management, indicators of the pressures and impacts of fishing on marine communities are required. Here the selectivity of fisheries, defined as the ratio between what is caught and what is available, is examined. Improving fisheries selectivity is considered as one of the main goals in current fisheries management.
title: The Conundrum of Nazi Law: An Historiographical Challenge to the Anglo-American Jurisprudential Representation of the Nazi Past
Creators: name: Lavis, Simon
Publisher: name: The Open University
Year: 2015

description: The question of whether Nazi law was valid law has been at the background of jurisprudential discourse since the Hart-Fuller debate in the 1950s. The enduring focus of that discourse on the validity question – the conditions of validity for law – and the separability question – the nature of the relationship between law and morality – has consigned the Third Reich to a specific jurisprudential role as a limit case for positivism and natural law. This dissertation elucidates and interrogates that role, using recent empirical and theoretical historical research to challenge its basis and assert the substantive relevance of the Nazi past for present legal theoretical concerns. It argues that the jurisprudential representation of Nazi Germany is flawed. It relies on a hypothetical, superficial, evil straw man version of the Third Reich that bears little resemblance to its actual history. It also treats Nazi law as the paradigmatic, archetypal wicked legal system. This is informed by an underlying narrative of rupture between Nazi Germany, including its legal system, and the contemporary concept of law. The positivism/natural law dichotomy around which the discourse is structured is consequently incapable of adequately explaining and incorporating Nazi law. This dissertation draws on the legal theoretical writing of David Fraser to examine how it might be reimagined to achieve this. The narrative of rupture that informs jurisprudence was constructed at Nuremberg and proliferated into historical understanding, public consciousness and, via the Hart-Fuller debate, jurisprudential discourse. Over recent decades it has been revised within historiography but its successor narratives have not made their way into jurisprudential discourse, which remains largely isolated from the historical discipline. This dissertation shows how the actual, historical case of Nazi law is not – but ought to be – part of the jurisprudential concept of law.
title: Facing the Third Person: Understanding the Second-Person Plural
Creators: name: Pawlett Jackson, Sarah
Publisher: name: The Open University
Year: 2020

description: In this thesis I present the case that there are forms of human interaction which should be understood as properly second-person plural. This kind of interaction, by definition, involves a minimum of three people. This is not just a claim about the grammatical form of an address. Rather, it is a claim about our lived intersubjective experience. In this investigation I follow existing philosophical literature that has examined the first-person plural and the second-person singular. The second-person plural, however, has been relatively underexplored.

 I outline the criteria for an interaction to be both second-personal and plural. I argue that a specific structure of interlocking reciprocal awareness, between multiple subjects, is required. This involves, I argue, both joint address and joint reception of address – where this address is second-personal, rather than third-personal. Using a phenomenological approach, I identify the kinds of cases that exhibit this structure in our everyday experience.

 I defend my account from various possible objections. I consider the objection that the second-person standpoint is definitionally singular, and that my account misunderstands the nature of second-personal interaction. I also consider the objection that my account does not respect the limits of second-personal attention, which is exhausted by engagement with a single other. I consider three versions of this latter worry, which are concerned with the spatial, temporal and dialogical limits of second-personal attention respectively. I argue that all of these objections to my account are misguided. The thread that runs through these objections, I argue, rests on a disembodied conception of the human subject. By contrast, I argue that a right understanding of subjectivity as necessarily embodied supports my account of the second-person plural.
Epitaxial MgB2 thin films on ZrB2 buffer layers: structural characterization by synchrotron radiation
Creators: name: Ferrando, V.
name: Tarantini, C.
name: Bellingeri, E.
name: Manfrinetti, P.
name: Pallecchi, I.
name: Marre, D.
name: Plantevin, O.
name: Putti, M.
name: Felici, R.
name: Ferdeghini, C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Structural and superconducting properties of magnesium diboride thin films grown by pulsed laser deposition on zirconium diboride buffer layers were studied. We demonstrate that the ZrB2 layer is compatible with the MgB2 two step deposition process. Synchrotron radiation measurements, in particular anomalous diffraction measurements, allowed to separate MgB2 peaks from ZrB2 ones and revealed that both layers have a single in plane orientation with a sharp interface between them. Moreover, the buffer layer avoids oxygen contamination from the sapphire substrate. The critical temperature of this film is near 37.6 K and the upper critical field measured at Grenoble High Magnetic Field Laboratory up to 20.3 T is comparable with the highest ones reported in literature.
description: 14 pages, 8 figures, submitted to Supercond. Sci. and Technol
Cooperative Membership, Contracts, and Production Efficiency: A Selectivity-Corrected Analysis of Smallholder Farmers
Creators: name: Khanal, Aditya R.
name: Mishra, Ashok K.
name: Kumar, Anjani
name: Khanal, Aditya R.
name: Mishra, Ashok K.
name: Kumar, Anjani
Publisher: name: Unknown
Year: 2019
Subjects: Production Economics

description: Presentation ID 16477
title: Double Dutch: implications of using both observer- and self-sampling techniques to quantify discards in The Netherlands
Creators: name: Uhlmann, Sebastian S.
name: van Helmond, Aloysius T. M.
name: Bol, Ronald A.
name: Nijman, Rosemarie R.
Publisher: name: ASC 2012 - Theme session C
Year: 2024
Subjects: Fisheries and aquaculture

description: No abstracts are to be cited without prior reference to the author.
A public HARPS radial velocity database corrected for systematic errors
Creators: name: Trifonov, Trifon
name: Tal-Or, Lev
name: Zechmeister, Mathias
name: Kaminski, Adrian
name: Zucker, Shay
name: Mazeh, Tsevi
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: Context. The HARPS spectrograph provides state-of-the-art stellar radial velocity (RV) measurements with a precision down to 1 m/s. The spectra are extracted with a dedicated data-reduction software (DRS) and the RVs are computed by CCF with a numerical mask. Aims. The aim of this study is three-fold: (i) Create easy access to the public HARPS RV data set. (ii) Apply the new public SERVAL pipeline to the spectra, and produce a more precise RV data set. (iii) Check whether the precision of the RVs can be further improved by correcting for small nightly systematic effects. Methods. For each star observed with HARPS, we downloaded the publicly available spectra from the ESO archive and recomputed the RVs with SERVAL. We then computed nightly zero points (NZPs) by averaging the RVs of quiet stars. Results. Analysing the RVs of the most RV-quiet stars, whose RV scatter is < 5 m/s, we find that SERVAL RVs are on average more precise than DRS RVs by a few percent. We find three significant systematic effects, whose magnitude is independent of the software used for the RV derivation: (i) stochastic variations with a magnitude of 1 m/s; (ii) long-term variations, with a magnitude of 1 m/s and a typical timescale of a few weeks; and (iii) 20-30 NZPs significantly deviating by a few m/s. In addition, we find small (< 1 m/s) but significant intra-night drifts in DRS RVs before the 2015 intervention, and in SERVAL RVs after it. We confirm that the fibre exchange in 2015 caused a discontinuous RV jump, which strongly depends on the spectral type of the observed star: from 14 m/s for late F-type stars, to -3 m/s for M dwarfs. Conclusions. Our NZP-corrected SERVAL RVs can be retrieved from a user-friendly, public database. It provides more than 212 000 RVs for about 3000 stars along with many auxiliary information, NZP corrections, various activity indices, and DRS-CCF products.
description: 16 pages, 17 figures, 4 tables, Accepted for publication in A&A
title: Disrupted Exoplanet Systems in the SuperWASP Archive
Creators: name: Cooper, Joseph
Publisher: name: The Open University
Year: 2020

description: The aim of this research project has been to search for disrupted or disintegrating exoplanets; this search has been carried out using archival data from the Super-WASP (Wide Angle Search for Planets) transit photometry detection programme. The main aim of the archival search was to look for objects similar to Kepler-1520b (Rappaport et al., 2012) and Boyajian’s star (Boyajian et al., 2016), which were both discovered using the transit method of detection and both show very unusual signals when compared to a typical transiting exoplanet. The transit signal of Kepler-1520b appears to change in depth between transits, where transits have a depth between 0% and 1.3% of the ﬂux. Boyajian’s star shows highly chaotic behaviour in the lightcurve with no distinct transit period and no consistent transit depth. I develop bespoke routines to search the SuperWASP archive, based on the characteristics of Kepler-1520b and Boyajian’s star, to ﬁnd transits that vary in depth. From these searches, objects with the largest transit depth variability were highlighted for possible follow up. The South African Large Telescope (SALT) was used to observe the spectra of four of the most interesting objects highlighted from the archive searches. These spectral observations provide stellar characteristics of the system and the subsequent WASP lightcurve analysis led to the discovery of two possible tidally disrupted transiting objects, which have been named Tidally Disrupted Transitors (TDTs) in this thesis. These objects appear to show large transit signals of up to 68% of the ﬂux occurring frequently and in a distinct pattern for between 1-2 months. The orbital conﬁguration of these objects also seems to suggest that they may have originated from outside the current host star’s system.
title: Bycatch Reduction Devices: Development, Adoption and Implementation?
Creators: name: Glass, Christopher W.
name: Eayrs, Stephen
name: Cournane, Jamie M.
Publisher: name: ASC 2012 - Theme session C
Year: 2024
Subjects: Fisheries and aquaculture

description: No abstracts are to be cited without prior reference to the author.We discuss potential reasons for the apparent general lack of adoption of bycatch reduction devices worldwide and make recommendation regarding mitigation measures and reduction programs that hold potential for addressing this issue.
Understanding nonequilibrium scaling laws governing collapse of a polymer
Creators: name: Majumder, Suman
name: Christiansen, Henrik
name: Janke, Wolfhard
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Recent emerging interest in experiments of single-polymer dynamics urge computational physicists to revive their understandings, particularly in the nonequilibrium context. Here we briefly discuss the currently evolving approaches of investigating the evolution dynamics of homopolymer collapse in computer simulations. Primary focus of these approaches is to understand various dynamic scaling laws related to coarsening and aging during the collapse in space dimension $d=3$, using tools popular in nonequilibrium coarsening dynamics of particle or spin systems. In addition to providing an overview of those results, we also present new preliminary data for $d=2$.
description: 18 pages, 14 figures
Farm Efficiency Under Risk: How Does Risk Influence the Efficiency Frontier?
Creators: name: Bergtold, Jason S.
name: Yeager, Elizabeth A.
name: Nalunga, Asha
name: Bergtold, Jason S.
name: Yeager, Elizabeth A.
name: Nalunga, Asha
Publisher: name: Unknown
Year: 2019
Subjects: Production Economics

description: Presentation ID 16524
Chern-Simons-like action induced radiatively in General Relativity
Creators: name: Mariz, T.
name: Nascimento, J. R.
name: Passos, E.
name: Ribeiro, R. F.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The Chern-Simons-like gravitational action is evaluated explicitly in four dimensional space-time by radiative corrections at one-loop level. The calculation is performed in fermionic sector where the Dirac fermions interact with the background gravitational field, including the parity-violating term \barψ\bsγ_5ψ. The investigation takes into account the weak field approximation and dimensional regularization scheme.
description: 9 pages, 10 figures, minor typos fixed
Formulation of Galilean relativistic Born-Infeld theory
Creators: name: Banerjee, Rabin
name: Bhattacharya, Soumya
name: Majhi, Bibhas Ranjan
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we formulate, for the first time, in a systematic manner, Galilean relativistic Born-Infeld action in detail. Exploiting maps connecting Lorentz relativistic and Galilean relativistic vectors, we construct the two limits (electric and magnetic) of Galilean relativistic Born-Infeld action from usual relativistic Born-Infeld theory. An action formalism is thereby derived. From this action, equations of motion are obtained either in the potential or field formulation. Galilean version of duality transformations involving the electric and magnetic fields are defined. They map the electric limit relations to the magnetic ones and vice-versa, exactly as happens for Galilean relativistic Maxwell theory. We also explicitly show the Galilean boost and gauge invariances of the theory in both limits.
description: 13 pages, 4 tables, some comments and a table added, matches with the published version
Effects of smoking on agricultural productivity
Creators: name: Haque, Samiul
name: Abedin, Naveen
name: Fakir, Adnan M. S.
name: Hannan, Rafe
name: Alam, Rafa
name: Haque, Samiul
name: Abedin, Naveen
name: Fakir, Adnan M. S.
name: Hannan, Rafe
name: Alam, Rafa
Publisher: name: Unknown
Year: 2019
Subjects: Production Economics

description: Presentation ID 16695
Reduction method for dimensionally regulated one-loop N-point Feynman integrals
Creators: name: Duplancic, G.
name: Nizic, B.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a systematic method for reducing an arbitrary one-loop N-point massless Feynman integral with generic 4-dimensional momenta to a set comprised of eight fundamental scalar integrals: six box integrals in D=6, a triangle integral in D=4, and a general two-point integral in D space time dimensions. All the divergences present in the original integral are contained in the general two-point integral and associated coefficients. The problem of vanishing of the kinematic determinants has been solved in an elegant and transparent manner. Being derived with no restrictions regarding the external momenta, the method is completely general and applicable for arbitrary kinematics. In particular, it applies to the integrals in which the set of external momenta contains subsets comprised of two or more collinear momenta, which are unavoidable when calculating one-loop contributions to the hard-scattering amplitude for exclusive hadronic processes at large momentum transfer in PQCD. The iterative structure makes it easy to implement the formalism in an algebraic computer program.
description: 22 pages, 2 figures; one appendix added, discussions clarified, version to appear in Eur. Phys. J. C
title: Optimization of Recombinant Flavivirus Antigens for Infection Serology: Towards Syndrome-Based Multiplex Tests
Creators: name: Mora Cardenas, Erick Noe
Publisher: name: The Open University
Year: 2020

description: Sensitive and specific pathogen detection is an essential prerequisite for the prevention and treatment of infectious diseases. The similarities of clinical symptoms and serological cross-reactivity of viral structural antigens make the diagnosis of flavivirus infection problematic. Therefore, the main aim of this thesis was the development of a non-structural protein 1 (NS1) based serological assay for the diagnosis of flaviviruses. Recombinant NS1 (rNS1) oligomers consistent with the native secreted form of the protein were purified for TBEV, WNV, ZIKV, USUV, and DENV 1-4. The ability of rNS1 proteins to detect specific antibodies was analyzed using sera of immunized mice and well-characterized human sera samples. These antigens were used in a standard ELISA format and shown to be highly sensitive and specific compared to commercial assays. The optimized NS1-based ELISA was used to assess the IgM/IgG responses to WNV and USUV in North-Eastern Italy. The results of the analysis confirmed the area as endemic for USUV and contributed to the characterization of the first human cases of USUV infection in blood donors. The NS1-based ELISA was also applied to 200 sera samples from patients exhibiting febrile illness who visited the University of Maiduguri Teaching Hospital in Nigeria. Only 11 of 200 serum samples were negative for all the flaviviruses tested, while all other samples were positive for at least one pathogen. Molecular analysis confirmed the circulation of flaviviruses in the region, including zika virus. In conclusion, rNS1 represents a valuable option for the serology of flaviviruses with reduced cross-reactivity and high sensitivity.
Costs of detector jitter in time entanglement quantum key distribution
Creators: name: Birnie, Dunbar Paul
Publisher: name: No Publisher Supplied
Year: 2021

description: Time entanglement quantum key distribution (QKD) shows promise in improving key rate and distribution distance when compared to other entanglement-based QKD implementations. In this paradigm, two parties (Alice and Bob) generate encryption keys by mapping the arrival times of entangled photons into bits through a time binning process called Pulse Position Modulation (PPM). Time entanglement theoretically guarantees agreement in the photon arrival times and thus the bits generated through PPM. Higher precision timing discretization, via smaller time bins, leads to a higher raw key rate, while detector accuracy ensures the two communicating parties maintain key agreement. However, inaccuracies in detection time (jitter) because of imperfect detectors causes disagreement between the keys observed by either party. In reconciling these jitter errors, Alice and Bob must publicly communicate proportionally to the error rate. This process leaks information to potential attackers and reduces the entropy of the keys. To regain the lost entropy, Alice and Bob compress the keys, which reduces the key length. Thus, the reconciliation process costs us secret key rate. This thesis quantifies the cost of observed timing jitter errors on secret key rates and proposes methods to mitigate the severity of such effects. First, we model the observed jitter errors that occur in the key distribution process and achieve a more accurate error characterization than made before. Using this, we can describe the relation between Alice's key and Bob's key as an information theoretic channel. By reducing the result of the quantum channel to a classical channel, we can bound the achievable secret key rates. We use this channel model to compare key reconciliation methods and determine the optimal binning parameters for PPM to maximize the secret key rate for different detector specifications.
Classical confinement of test particles in higher-dimensional models: stability criteria and a new energy condition
Creators: name: Seahra, Sanjeev S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We review the circumstances under which test particles can be localized around a spacetime section Σ_0 smoothly contained within a codimension-1 embedding space M. If such a confinement is possible, Σ_0 is said to be totally geodesic. Using three different methods, we derive a stability condition for trapped test particles in terms of intrinsic geometrical quantities on Σ_0 and M; namely, confined paths are stable against perturbations if the gravitational stress-energy density on M is larger than that on Σ_0, as measured by an observed travelling along the unperturbed trajectory. We confirm our general result explicitly in two different cases: the warped-product metric ansatz for (n+1)-dimensional Einstein spaces, and a known solution of the 5-dimensional vacuum field equation embedding certain 4-dimensional cosmologies. We conclude by defining a confinement energy condition that can be used to classify geometries incorporating totally geodesic submanifolds, such as those found in thick braneworld and other 5-dimensional scenarios.
description: 9 pages, REVTeX4, in press in Phys. Rev. D
title: The Reception of Katherine Mansfield in Germany
Creators: name: Sobotta, Monika
Publisher: name: The Open University
Year: 2020

description: This thesis is the first full-length study to explore the reception of Katherine Mansfield’s works in Germany and provides substantial previously un-researched materials. It investigates the reception processes manifested in the selection and translation of Mansfield’s writings into German, the attention given to them by publishers, reviewers, and academics, the reactions of her German readership, the inclusion of her works in literary histories and curricula of grammar schools and universities in Germany. This thesis provides a clear chronological narrative of Mansfield’s German reception and a major concern is answering the question as to how the different socio-political ruptures that affected Germany have shaped Mansfield’s reception during the past eight decades. It also explores the creative ways in which a number of writers from German-language countries were inspired by Katherine Mansfield’s fictional and personal writings. I have divided my thesis into seven chapters. The first presents my findings on the translation and publication histories. The second chapter identifies the ways in which a particular story evolved, considering that, over the period of my study, Germany was shaped by the ideologies of diverging political entities. The third chapter investigates Mansfield’s reception from the 1920s to 1945. In the fourth, I present Mansfield’s reception in post-war West Germany from the 1950s to 1990. The fifth chapter is concerned with Mansfield’s reception in the former German Democratic Republic. In the sixth, I examine her reception from the German reunification to the present day. The final chapter illustrates that texts live in relation to a larger network of intertexts and that Mansfield’s short stories and personal writings inspired responses from a number of German and German-speaking authors.
When translocation dynamics becomes anomalous
Creators: name: Metzler, Ralf
name: Klafter, Joseph
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantitative Biology (q-bio)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Recent single molecule experiments probing the passage process of a short single-stranded DNA (ssDNA) through a membrane channel (translocation) allow to measure the passage time distribution. Building on a recent modelling approach (D. K. Lubensky and D. R. Nelson, Biophys. J. 77, 1824 (1999)), which has been demonstrated to be valid for chains of up to $\simeq 300$ nucleotides and therefore well applies to the system we have in mind, we discuss the consequences if the associated dynamics is not of Markov origin, but if strong memory effects prevail during the translocation. Motivation is drawn from recent results indicating that the distribution of translocation times is broader than predicted by simple Markovian models based on Brownian motion.
description: 5 pages, 2 figures, RevTeX4, submitted to Biophys. J
title: Proteomic Analysis of Merkel Cell Polyomavirus
Creators: name: Triolo, Gianluca
Publisher: name: The Open University
Year: 2020

description: Over the past 8 years, the discovery of 11 new human polyomaviruses (HPyVs) has revived interest in this DNA tumor virus family. Although HPyV infection is widespread and largely asymptomatic, one of these HPyVs, Merkel cell polyomavirus (MCPyV), is a human tumor virus. JC virus (JCPyV), BK virus (BKPyV), HPyV7, and trichodysplasia-spinulosa virus (TSPyV) can cause non-neoplastic diseases in the setting of immunosuppression. Probably, one of the most common themes among the oncogenic viruses rests in the ability of one or more of the viral proteins to deregulate pathways involved in the control of cell proliferation. The focus of this work is on MCPyV, which is a human pathogen. In addition to its importance in human health, there is growing interest in adapting MCPyV for drug delivery and other biotechnology applications, several viral coat proteins can spontaneously assemble into capsids in vitro with morphologies identical to the native virions and virion assembly is a powerful model system for studying protein complex formation. The protein capsid of the virion is a non-covalent association of protein subunits that is responsible for an array of functions, including cell attachment, cell entry, and DNA release. Even for the best studied family members, the mechanism of assembly is still poorly understood. Studies on the proteins of MCPyV provide information about the composition of the virus, as well as individual virus-virus protein and virus-host protein interactions. Mass spectrometry offers a unique perspective on the properties of viruses. Its broad application to viral structure provides unique insights into many biological processes, including viral–antibody binding, protein–protein interactions and protein dynamics. Electrospray ionization (ESI) mass spectrometry is a powerful approach for analyzing biomolecules and biomolecular complexes. Previous studies have provided evidence that non-covalent biomolecular complexes can be observed by ESI mass spectrometry. Mass spectrometry of viral proteins is now routine and since viruses are typically well characterized, in that the capsid protein and genome sequences are known, identifying a virus based on the mass of the protein or based on enzymatic digestion is relatively straightforward. This thesis describes the use of mass spectrometry for the identification of proteins associated with the MCPy virion and for the analysis of the post-translational modifications of the capsid proteins, such as ubiquitinylation, phosphorylation and acetylation.
Prospects for multiwavelength polarization observations of GRB afterglows and the case GRB 030329
Creators: name: Klose, S.
name: Palazzi, E.
name: Masetti, N.
name: Stecklum, B.
name: Greiner, J.
name: Hartmann, D. H.
name: Schmid, H. M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We explore the prospects for simultaneous, broad-band, multiwavelength polarimetric observations of GRB afterglows. We focus on the role of cosmic dust in GRB host galaxies on the observed percentage polarization of afterglows in the optical/near-infrared bands as a function of redshift. Our driving point is the afterglow of GRB 030329, for which we obtained polarimetric data in the R band and K band simultaneously about 1.5 days after the burst. We argue that polarimetric observations can be very sensitive to dust in a GRB host, because dust can render the polarization of an afterglow wavelength-dependent. We discuss the consequences for the interpretation of observational data and emphasize the important role of very early polarimetric follow-up observations in all bands, when afterglows are still bright, to study the physical properties of dust and magnetic fields in high-z galaxies.
description: accepted for publication in Astronomy & Astrophysics
Autismus und Schule - Ein Wegweiser für Lehrkräfte (Version2_März2021)
Creators: name: Autismusforschungsforum Heureka!
Publisher: name: figshare
Year: 2021
Subjects: Developmental and Educational Psychology

description: A practical guide for teachers of a student with autism. This guide was created by autistic and non-autistic students, parents and teachers of autistic students in a participatory course at LMU Munich in the winter terms 2019/2020 and 2020/2021.
Machine learning for total cloud cover prediction
Creators: name: Baran, Ágnes
name: Lerch, Sebastian
name: Ayari, Mehrez El
name: Baran, Sándor
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Accurate and reliable forecasting of total cloud cover (TCC) is vital for many areas such as astronomy, energy demand and production, or agriculture. Most meteorological centres issue ensemble forecasts of TCC, however, these forecasts are often uncalibrated and exhibit worse forecast skill than ensemble forecasts of other weather variables. Hence, some form of post-processing is strongly required to improve predictive performance. As TCC observations are usually reported on a discrete scale taking just nine different values called oktas, statistical calibration of TCC ensemble forecasts can be considered a classification problem with outputs given by the probabilities of the oktas. This is a classical area where machine learning methods are applied. We investigate the performance of post-processing using multilayer perceptron (MLP) neural networks, gradient boosting machines (GBM) and random forest (RF) methods. Based on the European Centre for Medium-Range Weather Forecasts global TCC ensemble forecasts for 2002-2014 we compare these approaches with the proportional odds logistic regression (POLR) and multiclass logistic regression (MLR) models, as well as the raw TCC ensemble forecasts. We further assess whether improvements in forecast skill can be obtained by incorporating ensemble forecasts of precipitation as additional predictor. Compared to the raw ensemble, all calibration methods result in a significant improvement in forecast skill. RF models provide the smallest increase in predictive performance, while MLP, POLR and GBM approaches perform best. The use of precipitation forecast data leads to further improvements in forecast skill and except for very short lead times the extended MLP model shows the best overall performance.
description: 24 pages, 7 figures
Lie algebroid morphisms, Poisson Sigma Models, and off-shell closed gauge symmetries
Creators: name: Bojowald, Martin
name: Kotov, Alexei
name: Strobl, Thomas
Publisher: name: arXiv
Year: 2004
Subjects: subject: Differential Geometry (math.DG)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Chern-Simons gauge theories in 3 dimensions and the Poisson Sigma Model (PSM) in 2 dimensions are examples of the same theory, if their field equations are interpreted as morphisms of Lie algebroids and their symmetries (on-shell) as homotopies of such morphisms. We point out that the (off-shell) gauge symmetries of the PSM in the literature are not globally well-defined for non-parallelizable Poisson manifolds and propose a covariant definition of them as left action of some finite-dimensional Lie algebroid. Our approach allows to avoid complications arising in the infinite dimensional super-geometry of the BV- and AKSZ-formalism. This preprint is a starting point in a series of papers meant to introduce Yang-Mills type gauge theories of Lie algebroids, which include and generalize the standard YM theory, the PSM, and gerbes.
description: 24 pages
title: A review of possible mitigation measures for reducing mortality caused by slipping from purse-seine fisheries
Creators: name: Breen, Mike
name: Isaksen, Bjørnar
name: Ona, Egil
name: Pedersen, Audun O.
name: Pedersen, Geir
name: Saltskår, Jostein
name: Svardal, Benny
name: Tenningen, Maria
name: Thomas, Peter J.
name: Totland, Bjørn
name: Øvredal, Jan Tore
name: Vold, Aud
Publisher: name: ASC 2012 - Theme session C
Year: 2024
Subjects: Fisheries and aquaculture

description: No abstracts are to be cited without prior reference to the author.The release or “slipping” of schooling species like mackerel (Scomber scombrus) and herring (Clupea harengus) in the later phases of hauling during purse-seine fishing has been shown to induce high mortality among the released fish. Unsuitable catches, with respect to species, fish size and/or quality, or excessively large catches are the main reasons for slipping in these fisheries. In 2011, Norway introduced regulations banning the deliberate release of fish in the later stages of the purse seine haul in an attempt to minimise the unaccounted or collateral mortality from these fisheries. A mitigation program has been launched in Norway that aims to provide fishermen with tools that will minimise the need for slipping and, where slipping is unavoidable, maximise the survival of “slipped” fish. The program focuses on three main areas of development: 1) acoustic instrumentation for improved pre-catch identification of fish schools (in terms of species, quantity and fish size) to prevent catching unwanted fish; 2) methods and equipment to estimate the catch volume, fish size and quality at an early stage of pursing while slipping is still acceptable; 3) seine net designs and techniques that minimise the mortality associated with slipping. Where purse-seine gears used today are designed to maximise catch, new designs should consider the welfare of the catch and aim to minimise potentially fatal stressors and, physical injuries to the fish during the capture process
Partisanship and institutional trust in Mongolia
Creators: name: Jacob, Marc S.
name: Schenke, Greta
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: What explains institutional trust in democratic institutions in Mongolia? Institutional trust facilitates establishing democratic institutions in post-transition countries and has been accounted for by institutional performance and social capital approaches in previous research. We argue that particularly in post-transition systems, partisanship, the evaluation of corruption and the quality of democracy also impacts institutional trust. To contribute to the study of political culture in Mongolia, the only Asian post-communist country to have developed towards democracy, we investigate determinants of citizens’ trust in the president, parliament, and judiciary. To test the various explanatory factors of trust, we run ordered logit models using Asian Barometer data from 2014. The results suggest that, apart from institutional and social capital factors, partisanship strongly influences trust in the president and courts. This implies that Mongolians’ perceptions of the justice system are informed by political preference, which partially originates in attempts to seize courts’ autonomy.
Guia para a Gestão de Dados de Investigação na NOVA FCSH
Creators: name: NDDI - Núcleo de Desenvolvimento Digital da Investigação da NOVA FCSH
Publisher: name: Zenodo
Year: 2024

description: Este documento reúne um conjunto de boas práticas de GDI de forma a auxiliar os/as investigadores/as, docentes, gestores/as de ciência e demais intervenientes na gestão de dados resultantes de projetos de I&D. Estas boas práticas estão organizadas pelas várias fases do ciclo de vida dos dados de investigação, incluindo o planeamento, a recolha e organização, o processamento e análise, a publicação e partilha, a preservação e a reutilização.

A implementação das boas prática de GDI será apoiada pelo Núcleo de Desenvolvimento Digital da Investigação (NDDI) da NOVA FCSH, sobretudo na preparação de PGD e no arquivo de conjuntos de dados de investigação em repositórios confiáveis.