cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
An analysis of the importance, feasibility and reporting of industry versus non-industry funded clinical trials in neurology
Creators: name: Fodor, Bianca
name: Carlisle, Benjamin Gregory
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Medicine and Health Sciences
subject: Bioethics and Medical Ethics

description: Uninformative clinical trials fail to contribute to scientific knowledge, which wastes research resources and fails to honour expectations of patients who participate to advance medical science. For this project, I will look at neurological clinical trials to quantify the number of trials that meet the following three criteria for informativeness: importance (by citation analysis), feasibility (by measuring accrual attainment) and reporting (considering results on clinicaltrials.gov or publications in academic journals). As a primary outcome, I will test whether trial funding (industry versus non-industry) is associated with better scores for informativeness, controlling for trial design (randomization, blinding), trial indication, and study start date. I will also perform null hypothesis testing to see if the other described covariates are correlated with informativeness which will help identify potential areas for improvement.
Making Light Work of Ligation: A Novel Toolbox for Photochemical Surface Design
Creators: name: Paulöhrl, Thomas
Publisher: name: Karlsruhe
Year: 2013

description: The development and application of novel light-induced approaches for the design of precisely modified surfaces with tailored chemical and biochemical properties at a molecular level is described. The established arsenal of photochemical methods confer spatial temporal control and form a facile toolbox for modular conjugations in solution and for spatially resolved immobilizations onto surfaces with high efficiency.
Exploring the role of composition and mass-loading on the properties of hadronic jets
Creators: name: Kantzas, Dimitrios
name: Markoff, Sera
name: Lucchini, Matteo
name: Ceccobello, Chiara
name: Chatterjee, Koushik
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Astrophysical jets are relativistic outflows that remain collimated for remarkably many orders of magnitude. Despite decades of research, the origin of cosmic rays (CRs) remains unclear, but jets launched by both supermassive black holes in the centre of galaxies and stellar-mass black holes harboured in X-ray binaries (BHXBs) are among the candidate sources for CR acceleration. When CRs accelerate in astrophysical jets, they initiate particle cascades that form γ-rays and neutrinos. In the so-called hadronic scenario, the population of accelerated CRs requires a significant amount of energy to properly explain the spectral constraints similarly to a purely leptonic scenario. The amount of energy required often exceeds the Eddington limit, or even the total energy available within the jets. The exact energy source for the accelerated protons is unclear, but due to energy conservation along the jets, it is believed to come from the jet itself via transfer of energy from the magnetic fields, or kinetic energy from the outflow. To address this hadronic energy issue and to self-consistently evolve the energy flux along the flows, we explore a novel treatment for including hadronic content, in which instabilities along the jet/wind border play a critical role. We discuss the impact of the different jet composition on the jet dynamics for a pair dominated and an electron-proton jet, and consequently the emitted spectrum, accounting for both leptonic and hadronic processes. Finally, we discuss the implications of this mass-loading scenario to address the proton energy issue.
description: 17+6 pages, 10+9 figures
Superconductivity at 25K under hydrostatic pressure for FeTe0.5Se0.5 superconductor
Creators: name: Jha, Rajveer
name: Zargar, Rayees A.
name: Hafiz, A. K.
name: Kishan, H.
name: Awana, V. P. S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report the impact of hydrostatic pressure on the superconductivity and normal state resistivity of FeTe0.5Se0.5 superconductor. At the ambient pressure the FeTe0.5Se0.5 compound shows the superconducting transition temperature Tconset at above 13K and TcR=0 at 11.5K. We measure pressure dependent resistivity from 250K to 5K, which shows that the normal state resistivity increases initially for the applied pressures of up to 0.55GPa and then the same is decreased monotonically with increasing pressure of up to 1.97GPa. On the other hand the superconducting transition temperatures (Tconset and TcR=0) increase monotonically with increasing pressure. Namely the Tconset increases from 13K to 25K and TcR=0 from 11.5K to 20K for the pressures range of 0-1.97GPa. Our results suggest that superconductivity in this class of Fe-based compounds is very sensitive to pressure as the estimated pressure coefficient dTc(onset)/dP is 5.8K/GPa. It may be suggested that FeTe0.5Se0.5 superconductor is a strong electron correlated system. The enhancement of Tc with applying pressure is mainly attributed to an increase of charge carriers at Fermi surface.
description: Short MS - 7 Pages Text+Figs: Letter. J. Sup. Novel Mag
Family Business in Saudi Arabia: Literature Review and Research Agenda
Creators: name: Almazyad, Othman
Publisher: name: figshare
Year: 2022
Subjects: subject: 130203 Economics, Business and Management Curriculum and Pedagogy
subject: FOS: Educational sciences

description: Most family businesses in Saudi Arabia end with the third generation of the founder’s death. This study provides an overview of family business literature in Saudi Arabian. We conducted a literature review of 24 papers on Saudi family business. We found a lack of literature discussion on family business in the Saudi context. In addition, our findings show that the literature has focused mainly on family business performance and succession planning, followed by ownership, management, and corporate governance. Finally, we provide future research agenda to support future research on Saudi family business.
Zeros of functions in Bergman-type Hilbert spaces of Dirichlet Series
Creators: name: Brevig, Ole Fredrik
Publisher: name: arXiv
Year: 2014
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 11M41

description: For a real number $α$ the Hilbert spaces $\mathscr{D}_α$ consists of those Dirichlet series $\sum_{n=1}^\infty a_n/n^s$ for which $\sum_{n=1}^\infty |a_n|^2/[d(n)]^α< \infty$, where $d(n)$ denotes the number of divisors of $n$. We extend a theorem of Seip on the bounded zero sequences of functions in $\mathscr{D}_α$ to the case $α>0$. Generalizations to other weighted spaces of Dirichlet series are also discussed, as are partial results on the zeros of functions in the Hardy spaces of Dirichlet series $\mathscr{H}^p$, for $1\leq p <2$.
description: Minor corrections to Sections 1 and 2. Section 3 reorganized
A custom, high-performance real time measurement and control system for arbitrary power electronic systems in academic research and education
Creators: name: Axtmann, Christian
name: Boxriker, Miriam
name: Braun, Michael
Publisher: name: Karlsruhe
Year: 2016

description: In high-quality education, topics concerning the behavior and control of electrical machines and power electronics have to be taught not only theoretically but also in a practical manner. Hard- and software tools are necessary to fulfil this obligation. Nevertheless, commercial systems partially lack of functionality or full accessibility to implement custom solutions, which is obligatory in the research and education domain. Therefore, a digital signal processing system is presented, that allows full modification of every used device, both in hardware and in software.
Mass outflow from the symbiotic binary RS Oph during its 2021 outburst
Creators: name: Tomov, N. A.
name: Tomova, M. T.
name: Stoyanov, K. A.
name: Bonev, T. R.
name: Zamanov, R. K.
name: Iliev, I. Kh.
name: Nikolov, Ya. M.
name: Marchev, D.
name: Bisikalo, D. V.
name: Kaygorodov, P. V.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: RS Oph is a symbiotic recurrent nova containing a massive white dwarf with heavy mass loss during activity. In August 2021, it underwent its seventh optical eruption since the end of the 19th century. The goal of this work is to analyse the structure of the outflows from the outbursting object. Based on broad-band $U$, $B$, $V$, $R_{\rm C}$, and $I_{\rm C}$ photometry and high-resolution H$α$ spectroscopy obtained at days 11--15 of the outburst, we derived some parameters of the system's components and outflows and their changes during our observation. The effective temperature of a warm shell (pseudophotosphere) produced by the ejected material and occulting the hot component of the system was $T_{eff}=15000\pm1000$ K and the electron temperature of the nebula was $T_{e}=17000\pm3000$ K throughout the observations. The effective radius of the pseudophotosphere was $R_{ eff}=13.3\pm2.0$ R$_{\odot}$ and the emission measure of the nebula $EM=(9.50\pm0.59) $10$^{61}$ cm$^{-3}$ for day 11 and $R_{eff}=10.3\pm1.6$ R$_{\odot}$ and $EM=(5.60\pm0.35)$10$^{61}$ cm$^{-3}$ for day 15. To provide this emission measure, the bolometric luminosity of the outbursting object must exceed its Eddington limit. The mass-loss rate of the outbursting object through its wind is much greater than through its streams. The total rate (from wind + streams) was less than $(4-5)$ 10$^{-5}$ (d/1.6kpc)$^{3/2}$ M$_{\odot}$yr$^{-1}$. The streams are not highly collimated. Their mean outflowing velocities are $\upsilon_{b}=-3680\pm60$ km s$^{-1}$ for the approaching stream and $\upsilon_{r}=3520\pm50$ km s$^{-1}$ for the receding one if the orbit inclination is 50$^\circ$.
description: 8 pages, 2 figures; accepted in Astronomy & Astrophysics
Symmetry-protected Topological Phases, Generalized Laughlin Argument and Orientifolds
Creators: name: Hsieh, Chang-Tse
name: Sule, Olabode Mayodele
name: Cho, Gil Young
name: Ryu, Shinsei
name: Leigh, Robert G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We generalize Laughlin's flux insertion argument, originally discussed in the context of the quantum Hall effect, to topological phases protected by non-on-site unitary symmetries, in particular by parity symmetry or parity symmetry combined with an on-site unitary symmetry. As a model, we discuss fermionic or bosonic systems in two spatial dimensions with CP symmetry, which are, by the CPT theorem, related to time-reversal symmetric topological insulators (e.g., the quantum spin Hall effect). In particular, we develop the stability/instability (or "gappability"/"ingappablity") criteria for non-chiral conformal field theories with parity symmetry that may emerge as an edge state of a symmetry-protected topological phase. A necessary ingredient, as it turns out, is to consider the edge conformal field theories on unoriented surfaces, such as the Klein bottle, which arises naturally from enforcing parity symmetry by a projection operation.
description: 24 pages
Abrogation of Stem Loop Binding Protein (Slbp) function leads to a failure of cells to transition from proliferation to differentiation, retinal coloboma and midline axon guidance deficits
Creators: name: Turner, Kate
name: Hoyle, Jaqueline
name: Valdivia, Leonardo E.
name: Cerveny, Kara
name: Hart, Wendy
name: Mangoli, Maryam
name: Geisler, Robert
name: Rees, Michele
name: Houart, Corinne
name: Poole, Richard J.
name: Wilson, Steve W.
name: Gestri, Gaia
Publisher: name: Karlsruhe
Year: 2018

description: Through forward genetic screening for mutations affecting visual system development, we identified prominent coloboma and cell-autonomous retinal neuron differentiation, lamination and retinal axon projection defects in eisspalte (ele) mutant zebrafish. Additional axonal deficits were present, most notably at midline axon commissures. Genetic mapping and cloning of the ele mutation showed that the affected gene is slbp, which encodes a conserved RNA stem-loop binding protein involved in replication dependent histone mRNA metabolism. Cells throughout the central nervous system remained in the cell cycle in ele mutant embryos at stages when, and locations where, post-mitotic cells have differentiated in wild-type siblings. Indeed, RNAseq analysis showed down-regulation of many genes associated with neuronal differentiation. This was coincident with changes in the levels and spatial localisation of expression of various genes implicated, for instance, in axon guidance, that likely underlie specific ele phenotypes. These results suggest that many of the cell and tissue specific phenotypes in ele mutant embryos are secondary to altered expression of modules of developmental regulatory genes that characterise, or promote transitions in, cell state and require the correct function of Slbp-dependent histone and chromatin regulatory genes.
The power-law reaction rate coefficient for barrierless reactions
Creators: name: Yin, Cangtao
name: Du, Jiulin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The power-law reaction rate coefficient for the barrierless reactions is studied if the reactions take place in systems with power-law distributions, and a generalized rate formula for the barrierless reactions in Gorin model is derived. We show that due to barrierless, different from those for bimolecular and unimolcular reactions, the power-law rate coefficient for the barrierless reactions does not have the factor of power-law distribution function and thus it is not very strongly dependent on the nu-parameter. Four barrierless reactions are taken as the application examples to calculate the new rate coefficients, which with larger fitting nu-parameters can be exactly in agreement with the measurement values in experimental studies.
description: 9 pages, 2 figures, 1 table, 31 references
Strongly first order phase transition in the singlet fermionic dark matter model after LUX
Creators: name: Li, Tai
name: Zhou, Yu-Feng
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate an extension of the standard model (SM) with a singlet fermionic dark matter (DM) particle which interacts with the SM sector through a real singlet scalar. The presence of a new scalar provides the possibility of generating a strongly first order phase transition needed for electroweak baryogenesis. Taking into account the latest Higgs search results at the LHC and the upper limits from the DM direct detection experiments especially that from the LUX experiment, and combining the constraints from the LEP experiment and the electroweak precision test, we explore the parameter space of this model which can lead to the strongly first order phase transition. Both the tree- and loop-level barriers are included in the calculations. We find that the allowed mass of the second Higgs particle is in the range $\sim 30-350\hbox{ GeV}$. The allowed mixing angle $α$ between the SM-like Higgs particle and the second Higgs particle is constrained to $α\lesssim 28^{\circ}$. The DM particle mass is predicted to be in the range $\sim 15-350\hbox{ GeV}$. The future XENON1T experiment can rule out a significant proportion of the parameter space of this model. The constraint can be relaxed only when the mass of the SM-like Higgs particle is degenerate with that of the second Higgs particle, or the mixing angle is small enough.
description: 37 pages, 9 figures; v4: the version accepted by JHEP
Blue-Cloud D7.2 POPD - Requirement No. 3
Creators: name: Nugent, Patricia
Publisher: name: Zenodo
Year: 2020
Subjects: Collected Data Purposes
Collected Data Types
Data Protection Officers
Data Security measures

description: Following the Ethics Summary Report received during the evaluation of the Blue-Cloud proposal, some requirements related to ethical aspects in the project were identified.
This deliverable is related to the Ethics Requirements that the Blue-Cloud project must comply with, described in WP7 Ethics Requirements included in the Grant Agreement (GA) by the Agency as Part of Work Package No. 7 "Ethics Requirements"1 and responding to the ethical issues identified for the Project.
The Blue-Cloud project counts on the collection and processing of personal data, especially concerning the activities related to the Blue-Cloud website (blue-cloud.org) and Gateway (blue-cloud.d4science.org).
In particular, the contact details of the Data Protection Officers (DPOs) of the project beneficiaries have been made available to all data subjects involved in the project. For those beneficiaries not required to identify a DPO under the General Data Protection Regulation (GDPR)2, a letter of confirmation that a detailed data protection policy for the project will be kept on file and submitted
to the Agency upon request.
Together with D7.1 H – POPD Requirement No. 2, which deals with the type and purposes of the data to be collected, the deliverable confirms that the collected data is relevant and limited to the scope of the Project.
A description of the technical and organisational measures that will be implemented to safeguard the rights and freedoms of the data subjects/research participants is also provided, along with a description of the security measures that will be implemented to prevent unauthorised access to personal data (in particular video recording) or the equipment used for processing.
In general, it is not foreseen that the beneficiaries transfer the data collected to the purposes of the Project outside the EU; however, should such a situation occur at any point during the subsequent evolution of the Project, measures will be put in place to ensure that these transfers meet the requirements of Chapter V of the GDPR 2016/679.
A Microscopic Approach to Quark and Lepton Masses and Mixings
Creators: name: Lampe, Bodo
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In recent papers a microscopic model for the SM Higgs mechanism has been proposed, and an idea how to determine the 24 quark and lepton masses of all 3 generations has emerged in that framework. This idea is worked out in detail here by accommodating the fermion masses and mixings to microscopic parameters. The top quark mass can be given in terms of the Fermi scale and of certain exchange couplings of isospin vectors obeying a tetrahedral symmetry. The observed hierarchy in the family spectrum is attributed to a natural hierarchy in the microscopic couplings. The neutrinos will be shown to vibrate within the potential valleys of the system, thus retaining very tiny masses. This is related to a Goldstone effect inside the internal dynamics. A discussion of the quark and lepton mixing matrices is also included. The mixing angles of the PMNS matrix are calculated for an example set of parameters, and a value for the CP violating phase is given.
description: 37 pages, 4 figures, 2 tables
Stellar Energy Loss Rates from Photoneutrino Process in Minimal Extension Standard Model
Creators: name: Aydin, Coskun
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using the minimal extension of Standard Model taking into account the charge radius and the anapole moments of neutrino, we have derived analytic expressions for the stellar energy loss rates due to the production of the neutrino pair process $e^- + γ\rightarrow e^- + ν_e +\overline{ν_e}$ in a hot plasma for three limiting regimes (nondegenerate, intermediate and degenerate electrons) of temperature, the electron's chemical potential and plasma's energy. Obtained results show that there is approximately extra $10\%$ contribution by using the considered calculations.
description: Accepted and will be published in Chinese Physics C
Medical and Health Sciences Librarianship-Koc University, Suna Kirac Library-Career Fair 2023 Event
Creators: name: Zayim Gedik, Kubra
Publisher: name: Zenodo
Year: 2023
Subjects: librarian
medical libarian
librarianship

description: During the 59th Library Week, I was invited by Koç University Suna Kıraç Library to the Career Fair 2023 event. I shared my experiences in the medical and health sciences librarianship profession with our young colleagues. Thank you very much to the Suna Kıraç Library team for the invitation.
The nebula around the binary post-AGB star 89 Herculis
Creators: name: Cava, I. Gallardo
name: Alcolea, J.
name: Bujarrabal, V.
name: Gómez-Garrido, M.
name: Castro-Carrizo, A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: There is a class of binary post-asymptotic giant branch (post-AGB) stars that exhibit remarkable near-infrared (NIR) excess. These stars are surrounded by disks with Keplerian or quasi-Keplerian dynamics and outflows composed of gas escaping from the rotating disk. Depending on the dominance of these components, there are two subclasses of binary post-AGB stars: disk-dominated and outflow-dominated. We aim to properly study the hourglass-like structure that surrounds the Keplerian disk around 89 Her. We present total-power on-the-fly maps of $^{12}$CO and $^{13}$CO $J$=2-1 emission lines in 89 Her. Previous studies are known to suffer from flux losses in the most extended components. We merge these total-power maps with previous NOEMA maps. The resulting combined maps are expected to detect the whole nebula extent of the source. Our new combined maps contain the entirety of the detectable flux of the source and at the same time are of high spatial resolution thanks to the interferometric observations. We find that the hourglass-like extended outflow around the rotating disk is larger and more massive than suggested by previous works. The total nebular mass of this very extended nebula is 1.8E-2 solar masses, of which 65% comes from the outflow. The observational data and model results lead us to classify the envelope around 89 Her as an outflow-dominated nebula, together with R Sct and IRAS 19125+0343 (and very probably AI CMi, IRAS 20056+1834, and IRAS 18123+0511). The updated statistics on the masses of the two post-AGB main components reveal that there are two distinct subclasses of nebulae around binary post-AGB stars depending on which component is the dominant one. We speculate that the absence of an intermediate subclass of sources is due to the different initial conditions of the stellar system and not because both subclasses are in different stages of the post-AGB evolution.
description: Accepted 5 January 2023 in Astronomy & Astrophysics. 17 pages
Majorana fermion exchange in strictly one dimensional structures
Creators: name: Chiu, Ching-Kai
name: Vazifeh, M. M.
name: Franz, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: It is generally thought that adiabatic exchange of two identical particles is impossible in one spatial dimension. Here we describe a simple protocol that permits adiabatic exchange of two Majorana fermions in a one-dimensional topological superconductor wire. The exchange relies on the concept of "Majorana shuttle" whereby a $π$ domain wall in the superconducting order parameter which hosts a pair of ancillary Majoranas delivers one zero mode across the wire while the other one tunnels in the opposite direction. The method requires some tuning of parameters and does not, therefore, enjoy the full topological protection. The resulting exchange statistics, however, remains non-Abelian for a wide range of parameters that characterize the exchange.
description: 5 pages, 4 figures, supplemental material is included
New tools for monitoring urban sustainability - challenges and opportunities for cities in the 2020s
Creators: name: Gerten, Christian
Publisher: name: TU Dortmund
Year: 2023
Subjects: subject: Urban monitoring
subject: Spatial analysis methods
subject: Urban transformation
subject: 710
subject: Stadtentwicklung
subject: Räumliche Statistik
subject: Geoinformationssystem

description: This dissertation emphasises the challenges posed by global migration and urban expansion in the 21st century, highlighting their impact on sustainable development in cities. It acknowledges that cities are central to both the manifestation of problems and the development of solutions. This thesis explores the potential of new technical potentials, specifically data-driven approaches and spatial analysis methods, in enhancing the monitoring of urban sustainability. Three primary research foci have been selected as catalysts for sustainable urban development, with each one examined in a specific sub-study: urban growth dynamics, urban mobility structure, and urban arrival spaces. The first sub-study proposes a categorisation of urban growth into four distinct development paths, enabling simplified classification from a sustainability perspective. The second sub-study also emphasizes the importance of monitoring the mobility transition and puts forth a tool to identify and evaluate existing urban mobility structures, by classifying walking, transit and car-dependent neighborhoods. Additionally, the thesis presents a methodology for identifying and typifying arrival spaces, examining the impact of global migration. The thesis explores the integration and combination of various research fields in sustainable urban development, highlighting the potential of cross-thematic analyses through the utilisation of the tools developed in this work. The insights gained from this research highlight the significance of new technologies in analysing and understanding local urban phenomena. The spatial level of analysis is crucial for understanding urban challenges, but obtaining valid and small-scale socio-economic data remains a challenge. However, the increasing availability of open data and open-source platforms supports the development of monitoring tools and their transferability across administrative borders. Overall, this work sees a need for further research into the design and construction of comprehensive monitoring systems that can capture the dynamics of urban development in its entirety.
The Possibility Problem for Probabilistic XML (Extended Version)
Creators: name: Amarilli, Antoine
Publisher: name: arXiv
Year: 2014
Subjects: subject: Databases (cs.DB)
subject: Computational Complexity (cs.CC)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: H.2.3; E.1

description: We consider the possibility problem of determining if a document is a possible world of a probabilistic document, in the setting of probabilistic XML. This basic question is a special case of query answering or tree automata evaluation, but it has specific practical uses, such as checking whether an user-provided probabilistic document outcome is possible or sufficiently likely. In this paper, we study the complexity of the possibility problem for probabilistic XML models of varying expressiveness. We show that the decision problem is often tractable in the absence of long-distance dependencies, but that its computation variant is intractable on unordered documents. We also introduce an explicit matches variant to generalize practical situations where node labels are unambiguous; this ensures tractability of the possibility problem, even under long-distance dependencies, provided event conjunctions are disallowed. Our results entirely classify the tractability boundary over all considered problem variants.
description: 20 pages, 1 table, 2 figures. This is the complete version (including proofs) of work initially submitted as an extended abstract (without proofs) at the AMW 2014 workshop and subsequently submitted (with proofs) at the BDA 2014 conference (no formal proceedings). This version integrates the feedback from both rounds of reviews
Dynamical signature of a stellar bulge in a quasar host galaxy at $z\simeq 6$
Creators: name: Tripodi, Roberta
name: Lelli, Federico
name: Feruglio, Chiara
name: Fiore, Fabrizio
name: Fontanot, Fabio
name: Bischetti, Manuela
name: Maiolino, Roberto
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a dynamical analysis of a quasar-host galaxy at $z\simeq 6$ (SDSS J2310+1855) using a high-resolution ALMA observation of the [CII] emission line. The observed rotation curve was fitted with mass models that considered the gravitational contribution of a thick gas disc, a thick star-forming stellar disc, and a central mass concentration, which is likely due to a combination of a spheroidal component (i.e. a stellar bulge) and a supermassive black hole (SMBH). The SMBH mass of $5\times 10^9\ \rm M_{\odot}$, previously measured using the CIV and MgII emission lines, is not sufficient to explain the high velocities in the central regions. Our dynamical model suggests the presence of a stellar bulge with a mass of $\rm M_{bulge}\sim 10^{10}\ \rm M_{\odot}$ in this object, when the Universe was younger than 1 Gyr. To finally be located on the local $M_{\rm SMBH}-M_{\rm bulge}$ relation, the bulge mass should increase by a factor of $\sim$40 from $z=6$ to 0, while the SMBH mass should grow by a factor of 4 at most. This points towards asynchronous galaxy-BH co-evolution. Imaging with the JWST will allow us to validate this scenario.
description: 8 pages, 4 figures, 3 tables. Accepted by A&A
Adaptive hybrid optimal quantum control for imprecisely characterized systems
Creators: name: Egger, D. J.
name: Wilhelm, F. K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Optimal quantum control theory carries a huge promise for quantum technology. Its experimental application, however, is often hindered by imprecise knowledge of the its input variables, the quantum system's parameters. We show how to overcome this by Adaptive Hybrid Optimal Control (Ad-HOC). This protocol combines open- and closed-loop optimal by first performing a gradient search towards a near-optimal control pulse and then an experimental fidelity measure with a gradient-free method. For typical settings in solid-state quantum information processing, Ad-Hoc enhances gate fidelities by an order of magnitude hence making optimal control theory applicable and useful.
BPS State Counting in N=8 Supersymmetric String Theory for Pure D-brane Configurations
Creators: name: Chowdhury, Abhishek
name: Garavuso, Richard S.
name: Mondal, Swapnamay
name: Sen, Ashoke
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Exact results for the BPS index are known for a class of BPS dyons in type II string theory compactified on a six dimensional torus. In this paper we set up the problem of counting the same BPS states in a duality frame in which the states carry only Ramond-Ramond charges. We explicitly count the number of states carrying the lowest possible charges and find agreement with the result obtained in other duality frames. Furthermore, we find that after factoring out the supermultiplet structure, each of these states carry zero angular momentum. This is in agreement with the prediction obtained from a representation of these states as supersymmetric black holes.
description: 26 pages; v2: minor corrections in section 5; v3: typos corrected
Discovery of the Exceptionally Short Period Ultracool Dwarf Binary LP 413-53AB
Creators: name: Hsu, Chih-Chun
name: Burgasser, Adam J.
name: Theissen, Christopher A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report the detection of large-amplitude, rapid radial velocity (RV) variations and line-splitting in high-resolution Keck/NIRSPEC spectra of the M9 dwarf LP 413-53. We attribute these features to binary motion. Analyzing data spanning 15 years, we infer a preliminary orbital period of 0.7106156$\pm$0.0000002 day, an eccentricity of 0.0088$\pm$0.0017, a primary RV semi-amplitude of 23.70$\pm$0.05 km s$^{-1}$, and a secondary RV semi-amplitude of 28.41$\pm$0.06 km s$^{-1}$, implying a system mass ratio $M_\mathrm{secondary}$/$M_\mathrm{primary}$ = 0.8340$\pm$0.0017. These measurements identify LP 413-53 as the shortest-period ultracool binary discovered to date, and one of the smallest separation main sequence binaries known. The position and velocity of the system rule out previously reported membership in the Hyades Moving Group, and indicate that this is likely a pair of evolved (age $\gtrsim$ 1 Gyr), very-low-mass stars. Assuming masses consistent with evolved late-M and L dwarfs, we estimate an orbital separation of 0.0081$-$0.0084 au or 17$-$19 stellar radii, and an orbital inclination angle of 24$^{\circ}$, making it unlikely that this system exhibits eclipse events. The larger radii of these stars at young ages would have put them near contact at the system's current separation, and we speculate that this system has undergone dynamical evolution, either through orbital angular momentum loss or ejection of a third component followed by tidal circularization. While further observations are needed to fully constrain the orbital and physical parameters of LP 413-53, this ultra-short-period UCD binary system serves as a new testbed for formation and dynamical evolution models of very-low-mass multiples.
description: Accepted to ApJ Letters; 15 pages, 3 figures
title: Shaping up for success
title: a qualitative case study on the impact of using interactive radar graphs
      on workplace-based assessment practices for pharmacy interns in Ireland
titleType: Subtitle
Creators: name: Flood, Michelle
Publisher: name: Lancaster University
Year: 2018
Subjects: Competency
Medical Education
pharmacy
Visualisations
Assessment
Activity Theory

description: As competency-based health professions education is implemented more
      widely, the use of workplace-based assessment (WBA) has increased. WBA
      involves assessment of trainees in the workplace based on observation of
      performance against structured competency frameworks or using specific WBA
      tools. In Ireland, pharmacy interns are assessed against a 178-item
      behavioural checklist by a tutor as part of formative and summative
      assessments during training. This leads to the generation of large numbers
      of ratings which may prove challenging to interpret. This thesis aimed to
      explore how a novel information visualisation tool (Visualisation Tool)
      designed to support this process and explore how its introduction could
      impact on WBA practice.

      An activity theory-based methodology approach was used to first consider
      current WBA practice (using document analysis and focus groups) before
      exploring the potential of the Visualisation Tool to influence practice
      (using a double-stimulation user testing method). The findings indicated
      that current WBA practice is unexpectedly complex and many challenges were
      identified. Participants used technology to enter and record ratings, to
      review ratings, and as a point of reference during review meetings. Using
      the visualisation addressed problems relating to reductionism, allowed
      participants to more readily interpret the data, and allowed time in the
      review meeting to be used more efficiently so that the intern and tutor
      could prioritise discussion of specific areas of concern. The activity
      theory-based study design facilitated an in-depth analysis of the role of
      technology in practice. This study highlighted that technology is one of
      several, interrelated tools used in WBA and that while technology-based
      innovations may address some specific issues, a broader, system-level
      approach is required to address all issues identified as arising in WBA .
      These issues should be considered in the context of the overall WBA
      practice rather than in isolation, and researchers should avoid
      overestimating participants’ estimation of the role of technology.
How do student teachers experience the development of teacher identity
      during a three-year professional education degree?
Creators: name: Seward, Deborah
Publisher: name: Lancaster University
Year: 2018

description: For beginning teachers the development of a professional identity is
      significant because it influences decision making and impacts on longer
      term retention in the profession. This longitudinal research project
      explored the issue of professional identity development by early years’
      student teachers during their three-year undergraduate degree programme.
      Whilst it is widely recognised those professionals working with the
      youngest children in formal education should be highly skilled and
      educated there is a paucity of research in relation to student teachers
      training to teach 3 – 5 year olds. It is useful to consider development of
      teacher identity within the current performative and highly accountable
      culture of English education.

      The study tracked the development of a teacher identity for seven
      undergraduate students using semi structured interviews in each year of
      study. These took place pre and post practicum and allowed the students an
      opportunity for reflection on their on-going experiences as a student
      teacher. The data was analysed using a hybridised thematic approach.

      Analysis showed that students may experience three forms of identity
      development: transformation; consolidation; and rejection. Five dimensions
      reaching across these different forms of identity development were
      identified as: relationships; agency; boundary crossing; expectations of
      others; and professional standards. Four areas of particular concern for
      these students included: affective relational elements; multiple
      identities; contextually situated negotiation; and external membership
      requirements.

      The findings have implications for practice in teacher education
      programmes including the need to consider developing a pedagogy of
      becoming a teacher, to support identity development, as an integral aspect
      of initial teacher education programmes. Recommendations are made for the
      development of such a pedagogical approach which surfaces: values;
      beliefs; role models; and student ideas around the teacher they wish to
      become.
Light curves and polarizations of gravitationally lensed kilonovae
Creators: name: Qi, Yan-Qing
name: Liu, Tong
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Kilonovae are generally believed to originate from the ejecta of binary neutron stars (NSs) or black hole and NS mergers. Free neutrons might be retained in the outermost layer of the ejecta to produce a precursor via $β$-decay. During the propagation of kilonovae to observers, a small percentage of them might be gravitationally lensed by foreground objects. In this paper, three lens models, i.e., the point-mass model, the singular isothermal sphere (SIS) model, and the Chang-Refsdal model, were taken into consideration to explore the light curves and polarizations of gravitationally lensed kilonovae. We found that if the time delay between two images exceeds the ejecta heating timescale for the lens mass $\sim 10^{10}~M_\odot$ in the SIS model, a tiny bump-like signal will be generated in the light curve, and the total luminosity will be magnified in all cases. The polarization of lensed kilonovae is significantly enhanced in most cases. Future detections of lensed kilonovae will impose constraints on the morphology of the ejecta and aid in the determination of the nature of compact object mergers and the search for strong gravitational lenses.
description: 11 pages, 4 figures, accepted for publication in ApJ
Fractional Revivals, Multiple-Cat States and Quantum Carpets in the Interaction of a Qubit with $N$ Qubits
Creators: name: Dooley, Shane
name: Spiller, Timothy P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the dynamics of a system comprising a single qubit interacting equally with $N$ qubits (a "spin star" system). Although this model can be solved exactly, the exact solution does not give much intuition for the dynamics of the model. Here, we find an approximation that gives some insight into the dynamics for a particular class of initial spin coherent states of the $N$ qubits. We find an effective Hamiltonian for the system that is a finite Kerr (one-axis twisting) Hamiltonian for the $N+1$ qubits. The initial spin coherent state evolves to spin squeezed states on short timescales, and to "multiple-cat" states (superpositions of many spin coherent states) on longer timescales, a manifestation of the phenomenon of fractional revivals of the initial state. The evolution of the system is visualised with phase space plots ($Q$-functions) that, when plotted against time, reveal a "quantum carpet" pattern. Of particular interest is the fact that our approximation captures the qualitative features of the model even for small values of $N$. This suggests the possibility of observing the phenomenon of fractional revival in this model for systems of few qubits.
Resurrection of type IIL supernova 2018ivc: Implications for a binary evolution sequence connecting hydrogen-rich and -poor progenitors
Creators: name: Maeda, Keiichi
name: Michiyama, Tomonari
name: Chandra, Poonam
name: Ryder, Stuart
name: Kuncarayakti, Hanindyo
name: Hiramatsu, Daichi
name: Imanishi, Masatoshi
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Long-term observations of synchrotron emission from supernovae (SNe), covering more than a year after the explosion, provide a unique opportunity to study the poorly-understood evolution of massive stars in the final millennium of their lives via changes in the mass-loss rate. Here, we present a result of our long-term monitoring of a peculiar type IIL SN 2018ivc, using the Atacama Large Millimeter/submillimeter Array (ALMA). Following the initial decay, it showed unprecedented rebrightening starting at ~ a year after the explosion. This is one of the rare examples showing such rebrightening in the synchrotron emission, and the first case at millimeter wavelengths. We find it to be in the optically-thin regime unlike the optically-thick centimeter emission. As such, we can robustly reconstruct the distribution of the circumstellar matter (CSM) and thus the mass-loss history in the final ~1,000 years. We find that the progenitor of SN 2018ivc had experienced a very high mass-loss rate >~10^{-3} Msun/yr ~1,500 years before the explosion, which was followed by a moderately high mass-loss rate (>~10^{-4} Msun/yr) up until the explosion. From this behavior, we suggest SN 2018ivc represents an extreme version of a binary evolution toward SNe IIb, which bridges the hydrogen-poor SNe (toward SNe Ib/c, without a hydrogen envelope) and hydrogen-rich SNe (SNe IIP, with a massive envelope).
description: 13 pages, 4 figures, 1 table. Accepted for publication in ApJL
BABYSCAN - a whole body counter for small children in Fukushima
Creators: name: Hayano, Ryugo S.
name: Yamanaka, Shunji
name: Bronson, Frazier L.
name: Oginni, Babatunde
name: Muramatsu, Isamu
Publisher: name: arXiv
Year: 2014
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: BABYSCAN, a whole body counter for small children with a detection limit for $^{137}$Cs of better than 50 Bq/body, was developed, and the first unit has been installed at a hospital in Fukushima, to help families with small children who are very much concerned about internal exposures. The design principles, implementation details and the initial operating experience are described.
description: 7 figures, 2 tables
A Crowdsourced Corpus of Multiple Judgments and Disagreement on Anaphoric Interpretation
Creators: name: Poesio, Massimo
name: Chamberlain, Jon
name: Paun, Silviu
name: Yu, Juntao
name: Uma, Alexandra
name: Kruschwitz, Udo
Publisher: name: Universität Regensburg
Year: 2019
Subjects: subject: 020 Bibliotheks- und Informationswissenschaft

description: We present a corpus of anaphoric information (coreference) crowdsourced through a game-with-a-purpose. The corpus, containing annotations for about 108,000 markables, is one of the largest corpora for coreference for English, and one of the largest crowdsourced NLP corpora, but its main feature is the large number of judgments per markable: 20 on average, and over 2.2M in total. This characteristic makes the corpus a unique resource for the study of disagreements on anaphoric interpretation. A second distinctive feature is its rich annotation scheme, covering singletons, expletives, and split-antecedent plurals. Finally, the corpus also comes with labels inferred using a recently proposed probabilistic model of annotation for coreference. The labels are of high quality and make it possible to successfully train a state of the art coreference resolver, including training on singletons and non-referring expressions. The annotation model can also result in more than one label, or no label, being proposed for a markable, thus serving as a baseline method for automatically identifying ambiguous markables. A preliminary analysis of the results is presented.
Extending Partial Representations of Circle Graphs in Near-Linear Time
Creators: name: Brückner, Guido
name: Rutter, Ignaz
name: Stumpf, Peter
Publisher: name: Schloss Dagstuhl - Leibniz-Zentrum für Informatik GmbH (LZI)
Year: 2022

description: The partial representation extension problem generalizes the recognition problem for geometric intersection graphs. The input consists of a graph G, a subgraph H ⊆ G and a representation H of H. The question is whether G admits a representation G whose restriction to H is H. We study this question for circle graphs, which are intersection graphs of chords of a circle. Their representations are called chord diagrams. We show that for a graph with n vertices and m edges the partial representation extension problem can be solved in O((n+m)α(n+m)) time, where α is the inverse Ackermann function. This improves over an O(n$^{3}$)-time algorithm by Chaplick, Fulek and Klavík [2019]. The main technical contributions are a canonical way of orienting chord diagrams and a novel compact representation of the set of all canonically oriented chord diagrams that represent a given circle graph G, which is of independent interest.