cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Milli-arcsecond properties of 10C sources in the Lockman Hole
Creators: name: Whittam, Imogen H.
name: Riley, Julia M.
name: Green, David A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We have used recent Very Long Baseline Interferometry (VLBI) observations by Middelberg et al. with a resolution of $\approx 10$ mas to investigate the properties of faint sources selected from the Tenth Cambridge (10C) survey in the Lockman Hole. The 10C survey is complete to 0.5 mJy at 15.7 GHz and has a resolution of 30 arcsec. We have previously shown that this population is dominated by flat-spectrum sources below $\approx 1$ mJy, in disagreement with several models of the faint, high-frequency sky. We find that 33 out of the 51 10C sources in the VLBI field (65 percent) are detected by the VLBI observations. The sources detected by the VLBI observations must have a high brightness temperature, thus ruling out the possibility that this faint, high frequency population is dominated by starbursting or starforming sources and indicating that they must be Active Galactic Nuclei.
description: Accepted for publication in MNRAS
Cross section and reaction rate of 92Mo(p,gamma)93Tc determined from thick target yield measurements
Creators: name: Gyürky, Gy.
name: Vakulenko, M.
name: Fülöp, Zs.
name: Halász, Z.
name: Kiss, G. G.
name: Somorjai, E.
name: Szücs, T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: For the better understanding of the astrophysical gamma-process the experimental determination of low energy proton- and alpha-capture cross sections on heavy isotopes is required. The existing data for the 92Mo(p,gamma)93Tc reaction are contradictory and strong fluctuation of the cross section is observed which cannot be explained by the statistical model. In this paper a new determination of the 92Mo(p,gamma)93Tc and 98Mo(p,gamma)99mTc cross sections based on thick target yield measurements are presented and the results are compared with existing data and model calculations. Reaction rates of 92Mo(p,gamma)93Tc at temperatures relevant for the gamma-process are derived directly from the measured thick target yields. The obtained rates are a factor of 2 lower than the ones used in astrophysical network calculations. It is argued that in the case of fluctuating cross sections the thick target yield measurement can be more suited for a reliable reaction rate determination.
description: Accepted for publication in Nuclear Physics A
Finding the stable structures of W$_x$N$_1$$_-$$_x$ with an $ab$$-$$initio$ high-throughput approach
Creators: name: Mehl, Michael J.
name: Finkenstadt, Daniel
name: Dane, Christian
name: Hart, Gus L. W.
name: Curtarolo, Stefano
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Using density functional theory calculations, many researchers have predicted that various tungsten-nitride compounds WN$_x$ ($x$ > 1) will be "ultra-compressible" or "superhard", $i.e.$ as hard as or harder than diamond. These compounds are predicted to have large bulk and shear moduli (> 200 GPa) and to be elastically and vibrationally stable. Compounds with such desirable properties must be energetically stable against decomposition into other compounds. This stability can only be found after the determination of the convex hull for W$_x$N$_1$$_-$$_x$ lines which connect the lowest enthalpy structures as a function of composition. The phase diagram of the W-N structure is uncertain, both experimentally and computationally. Complex van der Waals forces play a significant role in determining the structure of solid N$_2$. Here we use high-throughput calculations to map out the convex hull and other low energy structures for the W-N system. We find that the ground state of the system is the NbO structure, and that the WN$_2$ structures found by Wang $et$ $al$. are also stable when the van der Waals forces are neglected. Other proposed structures are above the convex hull of the W-N system. We show how the choice of density functional influences the shape of the curve and the structures that form the hull. In nitrogen-rich compounds, the choice of functional can dramatically change the structural parameters and mechanical behavior. Using any of the functionals, the bulk and shear moduli of the NbO phase are comparable to the WN$_x$ compounds that have been claimed to be ultra-compressible for superhard.
description: 16 pages, 13 figures
A comprehensive study of six Algol type binaries
Creators: name: Liakos, Alexios
name: Zasche, Petr
name: Niarchos, Panagiotis
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: CCD light curves of the Algol type eclipsing binaries DP Cep, AL Gem, FG Gem, UU Leo, CF Tau and AW Vul were analysed using the Wilson-Deninney code and new geometric and absolute parameters were derived. Due to cyclic apparent orbital period changes of the systems, probably caused by the Light-Time Effect, the contribution of a third light was taken into account in the light curve solution. All the reliable timings of minima found in the literature were used to study the period variations and search for the presence of a tertiary component in the systems. A comparison between the parameters of the third body derived from the light curve and orbital period analyses is also discussed. Moreover, the absolute parameters of the eclipsing binary components were also used to determine their current evolutionary state.
description: 14 pages, 13 figures, 5 tables
White organic light-emitting diodes with an ultra-thin premixed emitting layer
Creators: name: Jeon, T.
name: Geffroy, Bernard
name: Tondelier, Denis
name: Bonnassieux, Yvan
name: Forget, Sebastien
name: Chenais, Sebastien
name: Ishow, Elena
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We described an approach to achieve fine color control of fluorescent White Organic Light-Emitting Diodes (OLED), based on an Ultra-thin Premixed emitting Layer (UPL). The UPL consists of a mixture of two dyes (red-emitting 4-di(4'-tert-butylbiphenyl-4-yl)amino-4'-dicyanovinylbenzene or fvin and green-emitting 4-di(4'-tert-butylbiphenyl-4-yl)aminobenzaldehyde or fcho) premixed in a single evaporation cell: since these two molecules have comparable structures and similar melting temperatures, a blend can be evaporated, giving rise to thin films of identical and reproducible composition compared to those of the pre-mixture. The principle of fine color tuning is demonstrated by evaporating a 1-nm-thick layer of this blend within the hole-transport layer (4,4'-bis[N-(1-naphtyl)-N-phenylamino]biphenyl (α-NPB)) of a standard fluorescent OLED structure. Upon playing on the position of the UPL inside the hole-transport layer, as well as on the premix composition, two independent parameters are available to finely control the emitted color. Combined with blue emission from the heterojunction, white light with Commission Internationale de l'Eclairage 1931 color coordinates (0.34, 0.34) was obtained, with excellent color stability with the injected current. The spectrum reveals that the fcho material does not emit light due to efficient energy transfer to the red-emitting fvin compound but plays the role of a host matrix for fvin, allowing for a very precise adjustment of the red dopant amount in the device.
L’incendio di San Paolo fuori le mura: un’investigazione scientifica molto a posteriori - Atti del Convegno: Città contemporanee e sicurezza tecnica - Dall’incendio della Basilica di San Paolo alle città del XXI secolo - Roma, Istituto Superiore Antincendi, 17 maggio 2023
Creators: name: Marsella, Stefano
name: Calzolari, Monica
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)

description: On the night of July 15, 1823, the papal basilica of Saint Paul outside the walls of Rome was seriously damaged by fire. There is an extensive bibliography on the history of the basilica up to the fire and on its reconstruction. On the contrary, the texts aimed at investigating the causes of the fire, in addition to being limited in number, are characterized by a historical approach while, at the state of archival and bibliographic knowledge, there is no investigative text carried out according to the criteria currently used for fire investigations. The research, starting from literature and archive documents, aims to investigate the causes using the scientific investigation method of the fire based on the knowledge acquired in recent years through research on the dynamics of vegetation fires.
The Development and Validation of Tools and Techniques to Assess Perceptions of Female Body Size/Shape
Creators: name: Maalin, Nadia
Publisher: name: University of Lincoln
Year: 2023

description: Body image comprises two distinct yet interrelated components: i) the perceptual component which is the mental picture one has of their body and is measured by looking at body size/shape estimation accuracy, and ii) the attitudinal component which is a person’s thoughts and feelings about their body size/shape and encompasses broader psychological constructs such as self-esteem and depressive thoughts. Disturbances in either or both components can have implications for a person’s livelihood, may result in extreme body change behaviours, and are prevalent features of eating disorders (e.g. Anorexia and Bulimia Nervosa) and obesity. The studies presented in this thesis were designed to develop and build on existing techniques used in perceptual body image research. Throughout seven main studies, novel measures/techniques were developed and the reliability, validity, and utility were assessed. Throughout the studies, the interactions between perceptual and attitudinal body image and the person’s own body and demographic characteristics were considered. In Study 1, an existing body size modification intervention was explored in a replication and extension study to provide further evidence of its utility in a sample of females with heightened body concerns. In Study 2, the baseline measurements from Study 1 were compared to a sample of females with low/mild body concerns, to further develop understanding of the relationship between perceptual and attitudinal components. In both studies, interactive computer software was used to assess perceptions of current and ideal body size/shape using a 3D female model. In Study 3, body size discrimination was investigated using a psychophysical task and novel computer-generated stimuli calibrated for Body Mass Index (BMI). Using these findings, new perceptually-spaced body scales were created and their reliability and validity were investigated in non-eating-disordered females (Study 4). For studies 5, 6, and 7, a 3D body scan and composition database from 221 Caucasian females aged 18 - 45 was developed, to generate novel 3D stimuli. In Study 5, a selection of the scans varying in BMI, combined with a standardised computer-generated skin texture, were used to investigate BMI category perceptions and attitudes towards weight loss, in a sample of UK adults. For studies 6 and 7, a novel interactive body scale was created, using a statistical mapping between 3D shape and body composition (fat mass and skeletal muscle mass). The plausibility, reliability and validity of this novel scale were investigated and perceptions of female body composition ideals were explored in male and female observers.
Iterative Dynamic Water-filling for Fading Multiple-Access Channels with Energy Harvesting
Creators: name: Wang, Zhe
name: Aggarwal, Vaneet
name: Wang, Xiaodong
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In this paper, we develop optimal energy scheduling algorithms for $N$-user fading multiple-access channels with energy harvesting to maximize the channel sum-rate, assuming that the side information of both the channel states and energy harvesting states for $K$ time slots is known {\em a priori}, and the battery capacity and the maximum energy consumption in each time slot are bounded. The problem is formulated as a convex optimization problem with ${\cal O}(NK)$ constraints making it hard to solve using a general convex solver since the computational complexity of a generic convex solver is exponential in the number of constraints. This paper gives an efficient energy scheduling algorithm, called the iterative dynamic water-filling algorithm, that has a computational complexity of ${\cal O}(NK^2)$ per iteration. For the single-user case, a dynamic water-filling method is shown to be optimal. Unlike the traditional water-filling algorithm, in dynamic water-filling, the water level is not constant but changes when the battery overflows or depletes. An iterative version of the dynamic water-filling algorithm is shown to be optimal for the case of multiple users. Even though in principle the optimality is achieved under large number of iterations, in practice convergence is reached in only a few iterations. Moreover, a single iteration of the dynamic water-filling algorithm achieves a sum-rate that is within $(N-1)K/2$ nats of the optimal sum-rate.
Dual pumped microresonator frequency combs
Creators: name: Hansson, T.
name: Wabnitz, S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A study is made of the nonlinear dynamics of dual pumped microresonator Kerr frequency combs described by a driven and damped nonlinear Schrödinger equation, with an additional degree of freedom in the form of the modulation frequency. A truncated four wave model is derived for the pump modes and the dominant sideband pair which is found to be able to describe much of the essential dynamical behaviour of the full equation. The stability of stationary states within the four wave model is investigated and numerical simulations are made to demonstrate that a large range of solutions, including cavity solitons, are possible beyond previously considered low intensity patterns.
description: 7 pages, 9 figures, submitted to Phys. Rev. A
The Politics of Nuclear Energy in the European Union. Framing the Discourse: Actors, Positions and Dynamics
Creators: name: Barnes, Pam
Publisher: name: University of Lincoln
Year: 2023

description: The submission presents a body of work analyzing the impact of changes to the political environment in which the European Union (EU)’s nuclear energy policy operated during a period of dramatic change for the EU from the late 1990s to the late 2010s. In the late 1990s/early 2000s the process of enlargement taking the EU from 15 to 28 Member States by 2013 began, and brought with it significant energy policy challenges for all the states involved. As the 2000s advanced, hegemonization of climate change in the energy discourse further challenged the EU’s policy makers searching for EU policy for sustainable, secure and competitive energy. Both events brought changes to the context in which the EU’s nuclear energy policy operates and were formative moments in the policy process. The publications were underpinned by three broad based and inter-linked themes, the: - ‘stickiness” of the Euratom Treaty that provides the legal framework for EU nuclear energy policy, - impact of the fifth enlargement of the EU on both EU internal nuclear energy policy and EU external nuclear energy policy, - impact of the hegemonization of climate change in the energy discourse. Notions underpinning the research – that history matters, institutions matter and ideas matter - were unpicked within the analysis. The use of nuclear energy in the EU’s energy mix is highly controversial and deeply divides the governments and citizens of the Member States of the EU. As it was an integrative model first devised in the 1950s there is no apparent justification for the EU’s model of nuclear integration to continue in the twenty-first century. I have argued in my work however, that despite many controversies surrounding the use of nuclear technology, it is in the interests of all EU states, nuclear generators and non-nuclear generators to support the model of nuclear integration that has evolved.
Orbital and physical parameters of eclipsing binaries from the All-Sky Automated Survey catalogue - VI. AK Fornacis - a rare, bright K-type eclipsing binary
Creators: name: Hełminiak, K. G.
name: Brahm, R.
name: Ratajczak, M.
name: Espinoza, N.
name: Jordán, A.
name: Konacki, M.
name: Rabus, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the results of the combined photometric and spectroscopic analysis of a bright (V=9.14), nearby (d=31 pc), late-type detached eclipsing binary AK Fornacis. This P=3.981 d system has not been previously recognised as a double-lined spectroscopic binary, and this is the first full physical model of this unique target. With the FEROS, CORALIE and HARPS spectrographs we collected a number of high-resolution spectra in order to calculate radial velocities of both components of the binary. Measurements were done with our own disentangling procedure and the TODCOR technique, and were later combined with the photometry from the ASAS and SuperWASP archives. We also performed an atmospheric analysis of the component spectra with the Spectroscopy Made Easy (SME) package. Our analysis shows that AK For consists of two active, cool dwarfs having masses of $M_1=0.6958 \pm 0.0010$ and $M_2=0.6355 \pm 0.0007$ M$_\odot$ and radii of $R_1=0.687 \pm 0.020$ and $R_2=0.609 \pm 0.016$ R$_\odot$, slightly less metal abundant than the Sun. Parameters of both components are well reproduced by the models. AK For is the brightest system among the known eclipsing binaries with K or M type stars. Its orbital period is one of the longest and rotational velocities one of the lowest, which allows us to obtain very precise radial velocity measurements. The precision in physical parameters we obtained places AK For among the binaries with the best mass measurements in the literature. It also fills the gap in our knowledge of stars in the range of 0.5-0.8 M$_\odot$, and between short and long-period systems. All this makes AK For a unique benchmark for understanding the properties of low-mass stars.
description: 9 pages, 11 figures, 3 tables, accpeted for publication in A&A
Towards a classification of branes in theories with eight supercharges
Creators: name: Bergshoeff, Eric A.
name: Riccioni, Fabio
name: Romano, Luca
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We provide a classification of half-supersymmetric branes in quarter-maximal supergravity theories with scalars parametrising coset manifolds. Guided by the results previously obtained for the half-maximal theories, we are able to show that half-supersymmetric branes correspond to the real longest weights of the representations of the brane charges, where the reality properties of the weights are determined from the Tits-Satake diagrams associated to the global symmetry groups. We show that the resulting brane structure is universal for all theories that can be uplifted to six dimensions. We also show that when viewing these theories as low-energy theories for the suitably compactified heterotic string, the classification we obtain is in perfect agreement with the wrapping rules derived in previous works for the same theory compactified on tori. Finally, we relate the branes to the R-symmetry representations of the central charges and we show that in general the degeneracies of the BPS conditions are twice those of the half-maximal theories and four times those of the maximal ones.
description: 47 pages, 8 figures
Identifying Dynamic Shifts to Careless and Insufficient Effort Behavior in Questionnaire Responses; a Novel Approach and Experimental Validation
Creators: name: Roman, Zachary J.
name: Schmidt, Patrick
name: Miller, Jason M.
name: Brandt, Holger
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Science Policy

description: Careless and insufficient effort responding (C/IER) is a situation where participants respond to survey instruments without considering the item content. This phenomena adds noise to data leading to erroneous inference. There are multiple approaches to identifying and accounting for C/IER in survey settings, of these approaches the best performing are model based classification techniques. Classic approaches to accounting for C/IER treat it as a person level phenomena. They first use some method to identify participants who exhibit C/IER, then use list-wise deletion to remove them prior to analysis. We argue that C/IER is actually a state that participants may exhibit for a portion of a survey instrument. In other words, participants start a survey with the intention to follow instructions, but at some point transition to a C/IER state and no longer respond in line with item contents. Accounting for C/IER at the item level, as opposed to the person level preserves data resulting in increased power. In this article we present a Bayesian Dynamic Latent Class Structural Equation Modeling (DLCSEM) approach for simultaneously accounting for C/IER at the item level and estimating a model of interest. We use a simulation study to establish the approaches performance under empirically relevant conditions and to compare it to other methods. We then conducted an experimental validation in which we induce C/IER like responses from human subjects and investigate the approaches ability to identify the point in which participants transition to a C/IER state. We also compare the model to existing approaches. In both the simulation and experimental validation the DLCSEM outperforms the alternative approaches. We conclude that the approach should be used by applied researchers for the pragmatic benefits of the method. Conclusions, limitations, and future directions are discussed.
Fundamental Composite Higgs Dynamics on the Lattice: SU(2) with Two Flavors
Creators: name: Hietanen, Ari
name: Lewis, Randy
name: Pica, Claudio
name: Sannino, Francesco
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In reference [1] a unified description, both at the effective and fundamental Lagrangian level, of models of composite Higgs dynamics was proposed. In the unified framework the Higgs itself can emerge, depending on the way the electroweak symmetry is embedded, either as a pseudo-Goldstone boson or as a massive excitation of the condensate. The most minimal fundamental description consists of an SU(2) gauge theory with two Dirac fermions transforming according to the defining representation of the gauge group. We therefore provide first principle lattice results for the massive spectrum of this theory. We confirm the chiral symmetry breaking phenomenon and determine the lightest spin-one axial and vector masses. The knowledge of the energy scale at which new states will appear at the Large Hadron Collider is of the utmost relevance to guide experimental searches of new physics.
description: 17 pages, 7 figures
Analysis of 2+1 diffusive-dispersive PDE arising in river braiding
Creators: name: Tanveer, Saleh
name: Tsikkou, Charis
Publisher: name: arXiv
Year: 2014
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We present local existence and uniqueness results for the following $2+1$ dispersive diffusive equation due to P. Hall arising in modeling of river braiding: $$u_{yyt} - γu_{xxx} -αu_{yyyy} - βu_{yy} + \left (u^2 \right)_{xyy} = 0$$ for $(x,y) \in [0, 2π] \times [0, π]$, $t> 0$, with boundary condition $u_{y}=0=u_{yyy}$ at $y=0$ and $y=π$ and $2π$ periodicity in $x$, using a contraction mapping argument in a Bourgain-type space $T_{s,b}$. We also show that the energy $\| u \|^2_{L^2} $ and cumulative dissipation $\int_0^t \| u_y \|_{L^2}^2 dt$ are globally controlled in time.
description: 21 pages
Development and morphology of leading-following parts of sunspot groups
Creators: name: Muraközy, J.
name: Baranyi, T.
name: Ludmány, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The detailed sunspot catalogues, the DPD and SDD allow to study the leading and following parts of sunspot groups separately. We examine the equilibrium distance of the two parts, the speed of removal, the asymmetry of compactness and the area growth. The distributions of positive and negative tilts of sunspot groups are also examined.
description: 8 pages, 5 figures
Non-homogeneous random walks on a semi-infinite strip
Creators: name: Georgiou, Nicholas
name: Wade, Andrew R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60J10 (Primary), 60F05, 60F15, 60K15, 60K25 (Secondary)

description: We study the asymptotic behaviour of Markov chains $(X_n,η_n)$ on $\mathbb{Z}_+ \times S$, where $\mathbb{Z}_+$ is the non-negative integers and $S$ is a finite set. Neither coordinate is assumed to be Markov. We assume a moments bound on the jumps of $X_n$, and that, roughly speaking, $η_n$ is close to being Markov when $X_n$ is large. This departure from much of the literature, which assumes that $η_n$ is itself a Markov chain, enables us to probe precisely the recurrence phase transitions by assuming asymptotically zero drift for $X_n$ given $η_n$. We give a recurrence classification in terms of increment moment parameters for $X_n$ and the stationary distribution for the large-$X$ limit of $η_n$. In the null case we also provide a weak convergence result, which demonstrates a form of asymptotic independence between $X_n$ (rescaled) and $η_n$. Our results can be seen as generalizations of Lamperti's results for non-homogeneous random walks on $\mathbb{Z}_+$ (the case where $S$ is a singleton). Motivation arises from modulated queues or processes with hidden variables where $η_n$ tracks an internal state of the system.
description: 27 pages
Counting tuples restricted by coprimality conditions
Creators: name: de Reyna, Juan Arias
name: Heyman, Randell
Publisher: name: arXiv
Year: 2014
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Given a set $A=\{(i_1,j_1),\ldots,(i_m,j_m)\}$ we say that $(a_1,\ldots,a_v)$ exhibits pairwise coprimality if $\gcd(a_i,a_j) = 1$ for all $(i,j)\in A$. For a given positive $x$ we give an asymptotic formula for the number of $(a_1,\ldots,a_v)$ with $1 \le a_1,\ldots,a_v \le x$ that exhibit pairwise coprimality. Our error term is better than that of Hu.
description: 16 pages
Connecting Mirror Symmetry in 3d and 2d via Localization
Creators: name: Chen, Heng-Yu
name: Chen, Hsiao-Yi
name: Ho, Jun-Kai
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We explicitly apply localization results to study the interpolation between three and two dimensional mirror symmetry for Abelian gauge theories with four supercharges. We first use the ellipsoid S_b^3 partition functions to verify the mirror symmetry between a pair of general three dimensional N=2 Abelian Chern-Simons quiver gauge theories. These expressions readily factorize into holomorphic blocks and their anti-holomorphic copies, so we can also obtain the partition functions on S^1 x S^2 via fusion procedure. We then demonstrate S^1 x S^2 partition functions for the three dimensional Abelian gauge theories can be dimensionally reduced to the S^2 partition functions of N=(2,2) GLSM and Landau-Ginzburg model for the corresponding two dimensional mirror pair, as anticipated previously in \cite{Aganagic:2001uw}. We also comment on the analogous interpolation for the non-Abelian gauge theories and compute the K-theory vortex partition function for a simple limit to verify the prediction from holomorphic block.
description: 36 pages, 0 figure
Expertise, Born of Experience: An autoethnographic exploration of my development as a pioneering expert by experience in maternity service provision and my subsequent influence on the education of nurses and midwives in the United Kingdom
Creators: name: Hunt, Sophia
Publisher: name: University of Lincoln
Year: 2023

description: This thesis presents a portfolio of evidence of my work as an Expert by Experience (EbE) in health and social care. Using the Critical Practice Framework (Barnett, 1997) as structure, I have written an overarching narrative of the thesis to bind together my portfolio of evidence with my individual journey, and a critical examination of theory and literature, to demonstrate the original contribution I have made to education and training of midwives in the UK. In addition to the portfolio of practice-based evidence presented, the research strategy of autoethnography was selected as an appropriate means to narrate the thesis, as it provides a reflexive, qualitative methodology in which I, as the researcher, am also the primary subject-participant. The thesis draws on both analytic and evocative forms of autoethnography. Using evocative autoethnography, I share my personal story of recurrent miscarriage and still-birth, where the data are comprised of my deepest thoughts, memories, letters and diaries. In a more traditional academic ‘voice’, I employ analytic autoethnography to analyse and situate my own actions, and critically to reflect on my role as an EbE. This analytic perspective acknowledges the conscious and (as far as possible) subconscious ways I have sought to gain credibility and acceptance within the highly professionalised world of healthcare education and policy. Uncomfortably, this includes the personal sacrifices and ethical dilemmas I have faced and worked through in order to establish my expertise, reputation and status. To situate the thesis and portfolio, I critically discuss how pervasive power hierarchies within healthcare policy and practice continue to reduce many well-intentioned Patient and Public Involvement initiatives, badged as ‘co-production’, to consumerist-style consultation exercises, where the full potential contribution and value of experts by experience is rarely realised. I also reflect upon the fact that my own ability to make personal sacrifices, in order to make my voice heard, may have inadvertently made it more difficult for others to do the same. I conclude with a series of recommendations for my own future work, and for empowering and extending the contribution of others in ways that are meaningful for them within the important area of lay influence, healthcare policy and practice
The CQC Algorithm: Cycling in Graphs to Semantically Enrich and Enhance a Bilingual Dictionary
Creators: name: Flati, Tiziano
name: Navigli, Roberto
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Bilingual machine-readable dictionaries are knowledge resources useful in many automatic tasks. However, compared to monolingual computational lexicons like WordNet, bilingual dictionaries typically provide a lower amount of structured information, such as lexical and semantic relations, and often do not cover the entire range of possible translations for a word of interest. In this paper we present Cycles and Quasi-Cycles (CQC), a novel algorithm for the automated disambiguation of ambiguous translations in the lexical entries of a bilingual machine-readable dictionary. The dictionary is represented as a graph, and cyclic patterns are sought in the graph to assign an appropriate sense tag to each translation in a lexical entry. Further, we use the algorithms output to improve the quality of the dictionary itself, by suggesting accurate solutions to structural problems such as misalignments, partial alignments and missing entries. Finally, we successfully apply CQC to the task of synonym extraction.
Exploration and Mapping of Spatio-Temporal Pedestrian Flow Patterns for Mobile Robots
Creators: name: Molina Mellado, Sergio
Publisher: name: University of Lincoln
Year: 2023
Subjects: I100 - Computer science

description: Socially compliant robot navigation is one of the key aspects for long-term acceptance of mobile robots in human-populated environments. One of the current barriers for this acceptance is that many navigation methods are based only on reactive behaviours, which can lead to frequent re-plannings, causing an erratic or aggressive robot behaviour. Instead, giving the ability to model and predict in advance how the people are likely to behave, from a long-term perspective, is an important enabler for safe and efficient navigation. For example, a robot may use its knowledge of the expected human motion to go with the main direction of flow to minimise the possibility of collisions or trajectory re-plannings.In order to provide robots with knowledge of the expected activity patterns of people at different places and times,the first main contribution of this thesis is the introduction of a Spatio-Temporal Flow map (STeF-map). This is a time-dependent probabilistic map able to model and predict the flow patterns of people in the environment. The proposed representation models the likelihood of motion directions on a grid-based map by a set of harmonic functions, which efficiently capture long-term variations of crowd movements over time. The experimental evaluation shows that the proposed model enables a better human motion prediction than spatial-only approaches and an increased capacity for socially compliant robot navigation.Obtaining this knowledge from a mobile robot platform is, however, not a trivial task, as usually they can only observe a fraction of the environment at a time, while the activity patterns of people may also change at different times. Therefore, the second main contribution is the investigation of a new methodology for mobile robot exploration to maximise the knowledge of human activity patterns, by deciding where and when to collect observations based on an exploration policy driven by the entropy levels in a spatio-temporal map. The evaluation is performed by simulating mobile robot exploration using real sensory data from three long-term pedestrian datasets, and the results show that for certain scenarios, the proposed exploration system can learn STeF-maps more quickly and better predict the flow patterns than uninformed strategies.
A fresh insight into the evolutionary status and third body hypothesis of the eclipsing binaries AD Andromedae, AL Camelopardalis, and V338 Herculis
Creators: name: Liakos, Alexios
name: Niarchos, Panagiotis
name: Budding, Edwin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Aims: We aim to derive the absolute parameters of the components of AD And, AL Cam, and V338 Her, interpret their orbital period changes and discuss their evolutionary status. Methods: New and complete multi-filter light curves of the eclipsing binaries AD And, AL Cam, and V338 Her were obtained and analysed with modern methods. Using all reliably observed times of minimum light, we examined orbital period irregularities using the least squares method. In addition, we acquired new spectroscopic observations during the secondary eclipses for AL Cam and V338 Her. Results: For AL Cam and V338 Her, we derive reliable spectral types for their primary stars. Statistical checks of orbital period analysis for all systems are very reassuring in the cases of V338 Her and AD And, although less so for AL Cam. The LIght-Time Effect (LITE) results are checked by inclusion of a third light option in the photometric analyses. Light curve solutions provide the means to calculate the absolute parameters of the components of the systems and reliably estimate their present evolutionary status. Conclusions: AL Cam and V338 Her are confirmed as classical Algols of relatively low mass in similar configurations. Unlike AL Cam, however, V338 Her is still transferring matter between its components, raising interest in the determinability of the evolutionary histories of Algols. AD And is found to be a detached system in which both close stars are of age ~109 yr and is probably a "non-classical" young triple, at an interesting stage of its dynamical evolution.
description: 9 pages, 12 figures, 4 tables
A reference-invariant health disparity index based on Rényi divergence
Creators: name: Talih, Makram
Publisher: name: arXiv
Year: 2013
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: One of four overarching goals of Healthy People 2020 (HP2020) is to achieve health equity, eliminate disparities, and improve the health of all groups. In health disparity indices (HDIs) such as the mean log deviation (MLD) and Theil index (TI), disparities are relative to the population average, whereas in the index of disparity (IDisp) the reference is the group with the least adverse health outcome. Although the latter may be preferable, identification of a reference group can be affected by statistical reliability. To address this issue, we propose a new HDI, the Rényi index (RI), which is reference-invariant. When standardized, the RI extends the Atkinson index, where a disparity aversion parameter can incorporate societal values associated with health equity. In addition, both the MLD and TI are limiting cases of the RI. Also, a symmetrized Rényi index (SRI) can be constructed, resulting in a symmetric measure in the two distributions whose relative entropy is being evaluated. We discuss alternative symmetric and reference-invariant HDIs derived from the generalized entropy (GE) class and the Bregman divergence, and argue that the SRI is more robust than its GE-based counterpart to small changes in the distribution of the adverse health outcome. We evaluate the design-based standard errors and bootstrapped sampling distributions for the SRI, and illustrate the proposed methodology using data from the National Health and Nutrition Examination Survey (NHANES) on the 2001-04 prevalence of moderate or severe periodontitis among adults aged 45-74, which track Oral Health objective OH-5 in HP2020. Such data, which use a binary individual-level outcome variable, are typical of HP2020 data.
description: Published in at http://dx.doi.org/10.1214/12-AOAS621 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Étude cognitive des processus de construction d'une requête dans un système de gestion de connaissances médicales
Creators: name: Chaignaud, Nathalie
name: Delavigne, Valérie
name: Holzem, Maryvonne
name: Kotowicz, Jean-Philippe
name: Loisel, Alain
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Retrieval (cs.IR)
subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: This article presents the Cogni-CISMeF project, which aims at improving medical information search in the CISMeF system (Catalog and Index of French-language health resources) by including a conversational agent to interact with the user in natural language. To study the cognitive processes involved during the information search, a bottom-up methodology was adopted. Experimentation has been set up to obtain human dialogs between a user (playing the role of patient) dealing with medical information search and a CISMeF expert refining the request. The analysis of these dialogs underlined the use of discursive evidence: vocabulary, reformulation, implicit or explicit expression of user intentions, conversational sequences, etc. A model of artificial agent is proposed. It leads the user in its information search by proposing to him examples, assistance and choices. This model was implemented and integrated in the CISMeF system. ---- Cet article décrit le projet Cogni-CISMeF qui propose un module de dialogue Homme-Machine à intégrer dans le système d'indexation de connaissances médicales CISMeF (Catalogue et Index des Sites Médicaux Francophones). Nous avons adopté une démarche de modélisation cognitive en procédant à un recueil de corpus de dialogues entre un utilisateur (jouant le rôle d'un patient) désirant une information médicale et un expert CISMeF af inant cette demande pour construire la requête. Nous avons analysé la structure des dialogues ainsi obtenus et avons étudié un certain nombre d'indices discursifs : vocabulaire employé, marques de reformulation, commentaires méta et épilinguistiques, expression implicite ou explicite des intentions de l'utilisateur, enchaînement conversationnel, etc. De cette analyse, nous avons construit un modèle d'agent artificiel doté de capacités cognitives capables d'aider l'utilisateur dans sa tâche de recherche d'information. Ce modèle a été implémenté et intégré dans le système CISMeF.
description: 29 pages
Biodiversity of marine flatworms (Polycladida, Platyhelminthes) in southeastern Australia
Creators: name: Rodriguez Monter, Jorge
Publisher: name: Macquarie University
Year: 2024
Subjects: classificationCode: 399999
subject: Other education not elsewhere classified

description: Polycladida is an order of free-living invertebrates of the Phylum Platyhelminthes, commonly referred to as flatworms. The functional roles of polyclad flatworms in ecological communities are anticipated to be complex and variable but our understanding of such processes is currently hampered by a lack of information on fundamental knowledge, such as the taxonomy of species in various habitats and regions. These gaps in the knowledge of the group are mostly related to the small number of researchers actively working on it, and to the discontinuity in time of the studies conducted so far. Southeastern Australia is a known biodiversity hotspot for several groups of marine organisms, yet only nine research articles have been published that include species from the southeastern region since 1855. This thesis explores the biodiversity, taxonomy and systematics of southeastern Australian polyclad flatworms, and new insights into the ecology and genomics of polyclads, as well as potential new avenues for species description and identification, are provided. The research conducted contributes new and original data concerning biodiversity, type material, DNA sequences, and phylogeny of Polycladida, filling the gaps about intertidal polyclad fauna in this region. New ecological data is employed to determine hotspot locations for flatworm occurrence in boulder beaches across southeastern Australia and improve our understanding of the factors that shape flatworm distribution and abundance in these environments. Moreover, the usefulness of different genes for molecular systematics in this taxon are analysed, contributing to the effort towards reconstructing a robust Polycladida phylogeny. Lastly, novel imaging techniques to create 3D objects from 2D histological sections are explored, creating for the first time a reproducible method of species identification and a way to store and share valuable knowledge for current and future generations. The knowledge provided by this thesis will give vital information for the conservation and management of this understudied group of animals.
Investigation of CygOB2 #11 (O5 Ifc) by modeling its atmosphere
Creators: name: Maryeva, Olga
name: Zhuchkov, Roman
name: Malogolovets, Eugene
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We continue the study of O-supergiants belonging to the association Cyg OB2 using moderate-resolution spectra. In this paper we present results of the modeling of the stellar atmosphere of Cyg OB2 #11. This object belongs to the spectral class Ofc, which was recently introduced and yet small in numbers. Ofc class consists of stars with normal spectra with CIII λλ4647,4650,4652 emission lines of comparable intensity to those of the Of-defining lines NIII λλ4634,4640,4642. We combined new spectral data obtained by the 1.5-m Russian-Turkish telescope with spectra from MAST and CASU archives and determined physical parameters of the wind and chemical composition of the stellar atmosphere using CMFGEN code. The estimated nitrogen abundance is lower than one in atmospheres of normal O-supergiants (i.e. O4-6 supergiants without additional spectral index "n" or "c") and carbon abundance is solar. Also we find an excess in silicon. We present an illustrative comparison of our modeling results with current Geneva evolutionary models for rotating massive stars. The position on the Hertzsprung-Russell diagram corresponds to the star mass of about 50M\sun and age about 4.5 Myr. Moreover, we carried out the high angular resolution (about 0.02'') observations on the Russian 6-meter telescope aiming to find weaker companions of this star, which did not reveal any.
description: 11 pages, 6 figures Accepted for publication in PASA
Outcomes in ACP studies in ESKD scoping review protocol v1.0.docx
Creators: name: Adenwalla, Sherna
Publisher: name: figshare
Year: 2023
Subjects: Nephrology and urology
Palliative care

description: This is a protocol for a scoping review looking at outcomes reported in interventional studies of advance care planning in patients with end-stage kidney disease on dialysis. An amended version was uploaded on 31/03/23 to clarify inclusion/exclusion criteria for studies.