cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Metapopulation epidemic models with heterogeneous mixing and travel behaviour
Creators: name: Apolloni, Andrea
name: Poletto, Chiara
name: Ramasco, Jose' J.
name: Jensen, Pablo
name: Colizza, Vittoria
Publisher: name: arXiv
Year: 2014
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: The complex interplay between population movements in space and non-homogeneous mixing patterns have so far hindered the fundamental understanding of the conditions for spatial invasion through a general theoretical framework. To address this issue, we present an analytical modelling approach taking into account such interplay under general conditions of mobility and interactions, in the simplifying assumption of two population classes. We describe a spatially structured population with non-homogeneous mixing and travel behaviour through a multi-host stochastic epidemic metapopulation model. Different population partitions, mixing patterns and mobility structures are considered, along with a specific application for the study of the role of age partition in the early spread of the 2009 H1N1 pandemic influenza. We provide a complete mathematical formulation of the model and derive a semi-analytical expression of the threshold condition for global invasion of an emerging infectious disease in the metapopulation system. A rich solution space is found that depends on the social partition of the population, the pattern of contacts across groups and their relative social activity, the travel attitude of each class, and the topological and traffic features of the mobility network. Reducing the activity of the less social group and reducing the cross-group mixing are predicted to be the most efficient strategies for controlling the pandemic potential in the case the less active group constitutes the majority of travellers. If instead traveling is dominated by the more social class, our model predicts the existence of an optimal across-groups mixing that maximises the pandemic potential of the disease, whereas the impact of variations in the activity of each group is less important.
Nonautonomous control of stable and unstable manifolds in two-dimensional flows
Creators: name: Balasuriya, Sanjeeva
name: Padberg-Gehle, Kathrin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 34C45, 93C15, 37B55

description: We outline a method for controlling the location of stable and unstable manifolds in the following sense. From a known location of the stable and unstable manifolds in a steady two-dimensional flow, the primary segments of the manifolds are to be moved to a user-specified time-varying location which is near the steady location. We determine the nonautonomous perturbation to the vector field required to achieve this control, and give a theoretical bound for the error in the manifolds resulting from applying this control. The efficacy of the control strategy is illustrated via a numerical example.
LiteRed 1.4: a powerful tool for the reduction of the multiloop integrals
Creators: name: Lee, R. N
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We review the Mathematica package LiteRed, version 1.4.
description: 8 pages, contribution to proceedings of ACAT2013 conference
Spin Orbit Interaction and Isotropic Electronic Transport in Graphene
Creators: name: Asmar, Mahmoud M.
name: Ulloa, Sergio E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Broken symmetries in graphene affect the massless nature of its charge carriers. We present an analysis of scattering by defects in graphene in the presence of spin-orbit interactions (SOIs). A characteristic constant ratio ($\simeq 2$) of the transport to elastic times for massless electrons signals the anisotropy of the scattering. We show that SOIs lead to a drastic decrease of this ratio, especially at low carrier concentrations, while the scattering becomes increasingly isotropic. As the strength of the SOI determines the energy (carrier concentration) where this drop is more evident, this effect could help evaluate these interactions through transport measurements.
Existence results for optimal control problems with some special non-linear dependence on state and control
Creators: name: Pedregal, Pablo
name: Tiago, Jorge
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 49J

description: We present a general approach to prove existence of solutions for optimal control problems not based on typical convexity conditions which quite often are very hard, if not impossible, to check. By taking advantage of several relaxations of the problem, we isolate an assumption which guarantees the existence of solutions of the original optimal control problem. To show the validity of this crucial hypothesis through various means and in various contexts is the main body of this contribution. In each such situation, we end up with some existence result. In particular, we would like to stress a general result that takes advantage of the particular structure of both the cost functional and the state equation. One main motivation for our work here comes from a model for guidance and control of ocean vehicles. Some explicit existence results and comparison examples are given.
description: The revised version was published in SIAM J. Control Optim
Does diet quality moderate the long-term effects of discrete but extreme PM2.5 exposure on respiratory symptoms? A study of the Hazelwood coalmine fire - Analytical code
Creators: name: Lane, Tyler
Publisher: name: Monash University
Year: 2023
Subjects: classificationCode: 321005
subject: Public health nutrition
classificationCode: 420203
subject: Environmental epidemiology

description: [PLACEHOLDER] This repository includes analytical code used to assess whether diet quality moderates the effect of coalmine fire-related PM2.5 on long-term respiratory health outcomes. For more background about this study, please refer to our Open Science Framework page: https://osf.io/yfgb3/
title: Actualiseren van de synthetische randvoorwaarden voor het opstellen van overstromingsgevaarkaarten. Aanvullende opdracht 1: afwaartse randvoorwaarden
Creators: name: Leyssen, Gert
name: Blanckaert, Joris
name: Adams, Roeland
name: Nossent, Jiri
name: Pereira, Fernando
Publisher: name: IMDC
Year: 2022

description: Title : Volume : Issue : Pagination : 49
A quasi-periodic oscillation in the blazar J1359+4011
Creators: name: King, O. G.
name: Hovatta, T.
name: Max-Moerbeck, W.
name: Meier, D. L.
name: Pearson, T. J.
name: Readhead, A. C. S.
name: Reeves, R.
name: Richards, J. L.
name: Shepherd, M. C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The OVRO 40-m telescope has been monitoring the 15 GHz radio flux density of over 1200 blazars since 2008. The 15 GHz light curve of the flat spectrum radio quasar J1359+4011 shows a strong and persistent quasi-periodic oscillation. The time-scale of the oscillation varies between 120 and 150 days over a $\sim4$ year time span. We interpret this as the active galactic nucleus mass-scaled analog of low-frequency quasi-periodic oscillations from Galactic microquasars, or as evidence of modulation of the accretion flow by thermal instabilites in the "inner" accretion disc.
description: 4 pages, 2 figures, 1 table. Accepted for publication in MNRAS Letters
A stability condition for turbulence model: From EMMS model to EMMS-based turbulence model
Creators: name: Zhang, Lin
name: Qiu, Xiaoping
name: Wang, Limin
name: Li, Jinghai
Publisher: name: arXiv
Year: 2013
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The closure problem of turbulence is still a challenging issue in turbulence modeling. In this work, a stability condition is used to close turbulence. Specifically, we regard single-phase flow as a mixture of turbulent and non-turbulent fluids, separating the structure of turbulence. Subsequently, according to the picture of the turbulent eddy cascade, the energy contained in turbulent flow is decomposed into different parts and then quantified. A turbulence stability condition, similar to the principle of the energy-minimization multi-scale (EMMS) model for gas-solid systems, is formulated to close the dynamic constraint equations of turbulence, allowing the heterogeneous structural parameters of turbulence to be optimized. We call this model the `EMMS-based turbulence model', and use it to construct the corresponding turbulent viscosity coefficient. To validate the EMMS-based turbulence model, it is used to simulate two classical benchmark problems, lid-driven cavity flow and turbulent flow with forced convection in an empty room. The numerical results show that the EMMS-based turbulence model improves the accuracy of turbulence modeling due to it considers the principle of compromise in competition between viscosity and inertia.
description: 26 pages, 13 figures, 2 tables
Reentrant topological transitions with Majorana end states in 1D superconductors by lattice modulation
Creators: name: Tezuka, Masaki
name: Kawakami, Norio
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The possibility to observe and manipulate Majorana fermions as end states of one-dimensional topological superconductors has been actively discussed recently. In a quantum wire with strong spin-orbit coupling placed in proximity to a bulk superconductor, a topological superconductor has been expected to be realized when the band energy is split by the application of a magnetic field. When a periodic lattice modulation is applied multiple topological superconductor phases appear in the phase diagram. Some of them occur for higher filling factors compared to the case without the modulation. We study the effects of phase jumps and argue that the topologically nontrivial state of the whole system is retained even if they are present. We also study the effect of the spatial modulation in the hopping parameter.
description: 10 pages, 9 figures, submitted to Phys. Rev. B
Complex structural dynamics of bismuth under laser-driven compression
Creators: name: Hu, Jianbo
name: Ichiyanagi, Kouhei
name: Doki, Tomoaki
name: Goto, Arihiro
name: Eda, Takayuki
name: Norimatsu, Katsura
name: Harada, Shinichi
name: Horiuchi, Dai
name: Kabasawa, Yuki
name: Hayashi, Shingo
name: Uozumi, Shin-ichi
name: Kawai, Nobuaki
name: Nozawa, Shunsuke
name: Sato, Tokushi
name: Adachi, Shin-ichi
name: Nakamura, Kazutaka G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: With the aid of nanosecond time-resolved X-ray diffraction techniques, we have explored the complex structural dynamics of bismuth under laser-driven compression. The results demonstrate that shocked bismuth undergoes a series of structural transformations involving four solid structures: the Bi-I, Bi-II, Bi-III and Bi-V phases. The transformation from the Bi-I phase to the Bi-V phase occurs within 4 ns under shock compression at ~11 GPa, showing no transient phases with the available experimental conditions. Successive phase transitions (Bi-V->Bi-III->Bi-II->Bi-I) during the shock release within 30 ns have also been resolved, which were inaccessible using other dynamic techniques.
description: 17 pages, 4 figures, Appl. Phys. Lett. accepted
Identified Particle Production in p-Pb Collisions Measured with the ALICE Detector
Creators: name: Christiansen, P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: ALICE has unique capabilities among the LHC experiments for particle identification (PID) at mid-rapidity ($|η| < 0.9$) over a wide range of transverse momentum ($p_{\rm T}$). In this proceeding recent measurements of $p_{\rm T}$ spectra for $π$, K, ${\rm K}^0_s$, p, and $Λ$ in p-Pb collisions are presented and compared to results from Pb-Pb and pp. In particular the implications for the question of the existence of radial flow in small systems is discussed.
description: 8 pages, 4 figures, proceeding for the International Conference on the Initial Stages in High-Energy Nuclear Collisions
The rotationally stabilized VPOS and predicted proper motions of the Milky Way satellite galaxies
Creators: name: Pawlowski, Marcel S.
name: Kroupa, Pavel
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The satellite galaxies of the Milky Way (MW) define a vast polar structure (VPOS), a thin plane perpendicular to the MW disc. Proper motion (PM) measurements are now available for all of the 11 brightest, `classical' satellites and allow an updated analysis of the alignment of their orbital poles with this spatial structure. The coherent orbital alignment of 7 to 9 out of 11 satellites demonstrates that the VPOS is a rotationally stabilized structure and not only a pressure-supported, flattened ellipsoid. This allows us to empirically and model independently predict the PMs of almost all satellite galaxies by assuming that the MW satellite galaxies orbit within the VPOS. As a test of our method, the predictions are best met by satellites whose PMs are already well constrained, as expected because more uncertain measurements tend to deviate more from the true values. Improved and new PM measurements will further test these predictions. A strong alignment of the satellite galaxy orbital poles is not expected in dark matter based simulations of galaxy formation. Coherent orbital directions of satellite galaxies are, however, a natural consequence of tidal dwarf galaxies formed together in the debris of a galaxy collision. The orbital poles of the MW satellite galaxies therefore lend further support to tidal scenarios for the origin of the VPOS and are a very significant challenge for the standard LCDM model of cosmology. We also note that the dependence of the MW satellite speeds on Galactocentric distance appear to map an effective potential with a constant velocity of approximately 240 km/s to about 250 kpc. The individual satellite velocities are only mildly radial.
description: 17 pages, 8 figures, 4 tables, accepted for publication in MNRAS
title: Electrochemical metal deposition controlled by molecular assemblies
Creators: name: Bartoletti, Enrico
Publisher: name: University of St Andrews
Year: 2015

description: This thesis studies the electrochemical deposition of the metals Pd and Cu on self-assembled monolayers (SAMs) formed on Au substrates. The SAMs are composed of aromatic mercaptans like 4,4′-dipyridyl disulfide or 3-(4-pyridine-4-ylphenyl)propane-1-thiol which are able to coordinate metal ions at their outer surface of the layer. Through an electrochemical reduction metal is deposited on top of the SAM thus, generating a Metal/SAM/Metal sandwich-like structure. Different outcomes arise, since the use of Pd coordinated to the SAM causes the formation of nanoparticles of limited size on top of the organic layer, while the use of Cu electrolyte elicits the formation of normal nanoisland growth. Also experiments in which both Cu and Pd were present at the same time are performed and by this means mixed nanoparticles on top of the organic layer are generated. The structures are created and analysed by cyclic voltammetry. The system in which only Cu is involved shows a potentially unlimited growth of bulk Cu, while the systems in which only Pd is involved or mixed Cu/Pd nanoparticles are created display a self-limiting growth which may be of great interest because it allows the precise tailoring of nanostructures. This thesis studies also the development of patterned structures achieved through chronoamperometric experiments: a substrate is half-immersed in a PdSO₄ solution which selectively coordinates Pd to one part of the SAM. Reduction of the Pd in the presence of Cu electrolyte results in a selective deposition of Cu on the Pd seeded area of the SAM. This procedure allows for a quick, easy and reliable way to create deposition patterns with a cheap setup. The samples are characterised by optical microscopy, scanning electron microscopy and atomic force microscopy.
Science ouverte et principes FAIR dans un projet de bioinformatique
Creators: name: Denecker, Thomas
Publisher: name: Zenodo
Year: 2023
Subjects: reproductibility
FAIR
Bioinformatic

description: L'objectif de cette présentation est de proposer des pistes pour rendre un projet de bioinformatique reproductible. Durée : 30 + 10 minutes de questions Lieu : Roscoff, France
The Dual Roles of Quantum Discord in a Non-demolition Probing Task
Creators: name: Yu, Chang-shui
name: Jin, Jia-sen
name: Fan, Heng
name: Song, He-shan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a non-demolition quantum information processing task of probing the information of a class of quantum state. In this task, the information is extracted by some unitary evolution with the introduced probing qubit assisted, but the probed quantum state (density matrix) is undisturbed at any time and independent of the choice of the initial probing state. We give a sufficient and necessary condition on the Hamiltonian that can lead to the successful realization of such a task. We prove that, for any feasible scheme, the probed plus probing system will always stay at a disentangled state with one side quantum discord absent and the other side one inevitably produced in the probing process. An explicit example is given for the demonstration, whilst the example shows that the ratio of quantum discord to the total correlation will have to reduce to zero for the maximal accessible information. In this sense, we say that quantum discord plays the dual roles in this case.
description: 5 pages and 1 figure
Mean-field dynamo action from delayed transport
Creators: name: Rheinhardt, Matthias
name: Devlen, Ebru
name: Rädler, Karl-Heinz
name: Brandenburg, Axel
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We analyze the nature of dynamo action that produces horizontally averaged magnetic fields in two particular flows that were studied by Roberts (1972, Phil. Trans. R. Soc. A 271, 411), namely his flows II and III. They have zero kinetic helicity either pointwise (flow II), or on average (flow III). Using direct numerical simulations, we determine the onset conditions for dynamo action at moderate values of the magnetic Reynolds number. Using the test-field method, we show that the turbulent magnetic diffusivity is then positive for both flows. However, we demonstrate that for both flows large-scale dynamo action occurs through delayed transport. Mathematically speaking, the magnetic field at earlier times contributes to the electromotive force through the off-diagonal components of the alpha tensor such that a zero mean magnetic field becomes unstable to dynamo action. This represents a qualitatively new mean-field dynamo mechanism not previously described.
description: 11 pages, 12 figures, submitted to MNRAS
Chemical abundances in the extremely Carbon and Xenon-rich halo planetary nebula H4-1
Creators: name: Otsuka, Masaaki
name: Tajitsu, Akito
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We performed detailed chemical abundance analysis of the extremely metal-poor ([Ar/H]-2) halo planetary nebula H4-1 based on the multi-wavelength spectra from Subaru/HDS, GALEX, SDSS, and Spitzer/IRS and determined the abundances of 10 elements. The C and O abundances were derived from collisionally excited lines (CELs) and are almost consistent with abundances from recombination lines (RLs). We demonstrated that the large discrepancy in the C abundance between CEL and RL in H4-1 can be solved using the temperature fluctuation model. We reported the first detection of the [Xe III]5846 A line in H4-1 and determination of its elemental abundance ([Xe/H]>+0.48). H4-1 is the most Xe-rich PN among the Xe-detected PNe. The observed abundances are close to the theoretical prediction by a ~2.0 Msun single star model with initially r-process element rich ([r/Fe]=+2.0 dex). The observed Xe abundance would be a product of the r-process in primordial SNe. The [C/O]-[Ba/(Eu or Xe)] diagram suggests that the progenitor of H4-1 shares the evolution with two types of carbon-enhanced metal-poor stars (CEMP), CEMP-r/s and CEMP-no stars. The progenitor of H4-1 is a presumably binary formed in an r-process rich environment.
description: Accepted for publication by the Astrophysical Journal
title: Exploring intramuscular energy storage. Implications for health and exercise performance.
Creators: name: Fortis, H
Publisher: name: Liverpool John Moores University
Year: 2023

description: Chapter 1 of this thesis focuses on the role of skeletal muscle on carbohydrate storage and glucose control. Responsible for ~80% of the body’s carbohydrate stores and a modest, yet important quantity of fat, skeletal muscle is a crucial site for energy storage in the human body. As skeletal muscle has large plasticity and has a finite storage capacity, it is important for energy to be stored efficiently, in order to supply metabolic processes. Lifestyle factors such as physical activity and energy intake can cause skeletal muscle to structurally adapt which can influence its metabolism. This is noticeable when comparing polarizing populations, such as trained individuals who undergo large volumes of exercise activity, compared to individuals with metabolic disorders, including type 2 diabetes (T2D). Chapter 2 of this thesis focuses on how nutritional stimuli can affect the ability of skeletal muscle to store energy and discuss the subsequent effects that this can have on exercise performance. An emerging area of exercise and health nutrition is polyphenols, a naturally occurring compound, found in many fruits and vegetables. New Zealand blackcurrant (NZBC) extract is highly concentrated in polyphenols and has been purported to aid exercise performance through improve blood flow and glucose uptake into muscle. We provide evidence that short-term supplementation of NZBC can improve carbohydrate storage in skeletal muscle. Chapter 3 then considered the differences between energy storage between individuals who are healthy, compared to those with T2D. To do this, we employed immunofluorescence microscopy to examine proteins involved in carbohydrate and lipid metabolism in skeletal muscle of individuals with T2D and healthy participants. SNAP23 is a membrane associated protein, which appears particularly important in attaching the glucose transporter (GLUT4) to the plasma membrane, therefore allowing for glucose uptake. SNAP23 is also localised on lipid droplet (LD) membranes and accumulation of intramuscular triglycerides, appear to cause lipid droplets (LD) to fuse together and grow. SNAP23 does not appear to be synthesised, therefore in order for LD to fuse it must ‘hijack’ SNAP23 away from the plasma membrane, which could attenuate glucose uptake. This chapter provides evidence for SNAP23 to be less colocalised at the plasma membrane in individuals with T2D, compared to lean individuals. However, this was not in conjunction with greater colocalisation of SNAP23 with LD. Therefore, this chapter also includes our speculation behind these unexpected findings.
Orbit closures and rational surfaces
Creators: name: Bleher, Frauke M.
name: Chinburg, Ted
name: Huisgen-Zimmermann, Birge
Publisher: name: arXiv
Year: 2014
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: In this paper we study the Grassmannian of submodules of a given dimension inside a finitely generated projective module $P$ for a finite dimensional algebra $Λ$ over an algebraically closed field. The orbit of such a submodule $C$ under the action of $\mathrm{Aut}_Λ( P )$ on the Grassmannian encodes information on the degenerations of $P/C$ and has been considered by a number of authors. The goal of this article is to bound the geometry of two-dimensional orbit closures in terms of representation-theoretic data. Several examples are given to illustrate the interplay between the geometry of the projective surfaces which arise and the corresponding posets of degenerations.
description: 29 pages, 5 figures
title: A practice migration strategy to facilitate implementation of BS EN IEC 61508 in the UK commercial marine sector
Creators: name: Shaw, E
Publisher: name: Liverpool John Moores University
Year: 2023

description: In many engineering sectors with the potential to produce major accident hazards in the event of a failure, accepted good practice for implementing functional safety of Safety-Critical Systems (SCS) is considered conformity to the standard IEC 61508. Major accident hazards may potentially occur in the United Kingdom Commercial Marine Sector (UKCMS) in the event of a collision or capsizing of a large vessel, however IEC 61508 is not implemented sector wide. In this thesis, the International Maritime Organizations (IMO) Formal Safety Assessment is utilised as the framework for a model that determines a series of objectives required to overcome barriers to the implementation of IEC 61508 in the UKCMS. The typical cost-benefit analysis used during a Formal Safety Assessment is enhanced with a Balanced Scorecard (BSC) that assesses the barriers to the standards implementation from perspectives other than financial. The objectives and measures of the BSC are determined using a survey answered by engineers with a range of backgrounds and experience related both to functional safety of SCS in general, and the UKCMS. The rank in terms of importance of each objective, and of each perspective is determined using a fuzzy variant of the Analytical Hierarchy Process (AHP), then the top 25 ranked objectives are chosen for further investigation. The current success of the objectives are determined by investigating their progress relative to their measures. Afterwards, further actions for progressing measures below a certain score threshold are determined. Recommendations for achieving these actions are derived from a survey with experts, which are then used to form a strategy for UKCMS companies to migrate from current practice for implementing functional safety of SCS, to practice that aligns with IEC 61508. Objectives used in the BSC align with the typical perspectives of a BSC, however this project’s first survey indicated the necessity to address regulatory and cyber-security related barriers as well. The validity of the results is measured against their ability to represent the full breadth of the UKCMS, which is dependent on expert participation. The migration strategy provides actions suitable for the current situation regarding conformity to IEC 61508, however the methods used in this project require iteration for continuous use. The methods used in this project and the current iteration of the migration strategy provides a solution for implementing IEC 61508 without a legislative incentive, and may also be useful should the standard be mandated in the future by IMO or a classification society. This thesis concludes with a proposal for the migration strategies implementation and iteration.
The Quantum Frontier of Software Engineering: A Systematic Mapping Study
Creators: name: De Stefano, Manuel
name: Pecorelli, Fabiano
name: Di Nucci, Dario
name: Palomba, Fabio
name: De Lucia, Andrea
Publisher: name: figshare
Year: 2023
Subjects: Empirical software engineering

description: Quantum computing is becoming a reality, and quantum software engineering (QSE) is emerging as a new discipline to enable developers to design and develop quantum programs. This paper presents a systematic mapping study of the current state of QSE research, aiming to identify the most investigated topics, the types and number of studies, the main reported results, and the most studied quantum computing tools/frameworks. The study also explores the research community's interest in QSE, how it has evolved, and any prior contributions to the discipline before its formal introduction through the Talavera Manifesto. We found that QSE research has primarily focused on software testing, with little attention given to other topics, such as software engineering management. The most commonly studied technology for techniques and tools is Qiskit, although in most studies, either multiple, either none specific technologies were employed. The researchers most interested in QSE are interconnected through direct collaborations, and several strong collaboration clusters have been identified. Most articles in QSE have been published in many non-thematic venues, with a preference for conferences. The study's implications are providing a centralized source of information for researchers and practitioners in the field, facilitating knowledge transfer, and contributing to the advancement and growth of QSE.
Entangling Power in the Deterministic Quantum Computation with One Qubit
Creators: name: Yu, Chang-shui
name: Yi, X. X.
name: Song, He-shan
name: Fan, Heng
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The deterministic quantum computing with one qubit (DQC1) is a mixed-state quantum computation algorithm that evaluates the normalized trace of a unitary matrix and is more powerful than the classical counterpart. We find that the normalized trace of the unitary matrix can be directly described by the entangling power of the quantum circuit of the DQC1, so the nontrivial DQC1 is always accompanied with the non-vanishing entangling power. In addition, it is shown that the entangling power also determines the intrinsic complexity of this quantum computation algorithm, i.e., the larger entangling power corresponds to higher complexity. Besides, it is also shown that the non-vanishing entangling power does always exist in other similar tasks of DQC1.
description: 6 pages and 1 figure
Delphi Study to validate the survey exploring academic awareness and engagement with data-driven practices.
Creators: name: Raffaghelli, Juliana Elisa
Publisher: name: Zenodo
Year: 2019
Subjects: data literacy, educators, faculty development, critical approach, Delphi, survey

description: While data literacy (encompassing a critical, open and networked vision of data) is becoming a central component in lifelong learning and civic education, it seems that there is a dearth of first-hand conceptual and empirical research on faculty development. This might be due to the fact that the problems related to data are diversified, given that academics operate in the two complex fields of research and teaching, as explained above. In relation to research, data is connected with the discourses of open science and open data in research. In relation to teaching, data comes from pedagogical practices and teachers’ and students’ activities and interactions in online and blended learning. These are two different universes with different research specificities. But data-driven practices imply forms of awareness that are potentially transversal and connected to DS, in a context of HE modernization and with digital and derived data-driven practices at the core. How should the professional development of academic staff be designed and developed so as to introduce transformative and critical use of digitalized data and ensure a positive impact on DS as an essential component in HE modernization? This research question is addressed within this project by analysing, designing, developing, deploying and testing a professional learning ecology supporting data literacy among academics and relating it to short-term impacts. The chosen methodological approach encompasses mixed methods research developed in three phases: an initial desk research phase and two phases of design-based research. In the desk research phase, the constructs are defined. Moreover, a survey will collect the necessary information to elaborate the scenarios and framework of competences for data literacy among academics. We present here: a) the document with the results of the Delphi study carried out to validate the instrument used in the survey study. b) the questionnaires in English defined as a result of the Dephi. Note: While the two areas of research and teaching will be taken into account, the instruments are diversified and will provide the opportunity to select one or other as the main area of activity. This is particularly important considering that many professional roles at the beginning of a career in academia exclusively cover either research or teaching.
Glycolaldehyde Formation via the Dimerisation of the Formyl Radical
Creators: name: Woods, Paul M.
name: Slater, Ben
name: Raza, Zamaan
name: Viti, Serena
name: Brown, Wendy A.
name: Burke, Daren J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Glycolaldehyde, the simplest monosaccharide sugar, has recently been detected in low- and high-mass star-forming cores. Following on from our previous investigation into glycolaldehyde formation (Woods et al. 2012, ApJ, 750, 19), we now consider a further mechanism for the formation of glycolaldehyde that involves the dimerisation of the formyl radical, HCO. Quantum mechanical investigation of the HCO dimerisation process upon an ice surface is predicted to be barrierless and therefore fast. In an astrophysical context, we show that this mechanism can be very efficient in star-forming cores. It is limited by the availability of the formyl radical, but models suggest that only very small amounts of CO are required to be converted to HCO to meet the observational constraints.
description: 8 pages, 5 tables, 1 $350 figure, to be published in The Astrophysical Journal
1D Cahn-Hilliard dynamics : coarsening and interrupted coarsening
Creators: name: Villain-Guillot, Simon
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Many systems exhibit a phase where the order parameter is spatially modulated. These patterns can be the result of a frustration caused by the competition between interaction forces with opposite effects. In all models with local interactions, these ordered phases disappear in the strong segregation regime (low temperature). It is expected however that these phases should persist in the case of long range interactions, which can't be correctly described by a Ginzburg-Landau type model with only a finite number of spatial derivatives of the order parameter. An alternative approach is to study the dynamics of the phase transition or pattern formation. While, in the usual process of Ostwald ripening, succession of doubling of the domain size leads to a total segregation, or macro-segregation, C. Misbah and P. Politi have shown that long-range interactions could cause an interruption of this coalescence process, stabilizing a pattern which then remains in a micro-structured state or super-crystal. We show that this is the case for a modified Cahn-Hilliard dynamics due to Oono which includes a non local term and which is particularly well suited to describe systems with a modulated phase.
Disentangling root system responses to neighbours: identification of novel root behavioural strategies
Creators: Belter, P. R.
Cahill, J. F.
Publisher: name: University of Alberta Library
Year: 2015

Plants live in a social environment, with interactions among neighbours a ubiquitous aspect of life.Though many of these interactions occur in the soil, our understanding of how plants alter root growth and the patterns of soil occupancy in response to neighbours is limited. This is in contrast to a rich literature on the animal behavioural responses to changes in the social environment. For plants, root behavioural changes that alter soil occupancy patterns can influence neighbourhood size and the frequency or intensity of competition for soil resources; issues of fundamental importance to understanding coexistence and community assembly. Here we report a large comparative study in which individuals of 20 species were grown with and without each of two neighbour species. Through repeated root visualization and analyses, we quantified many putative root behaviours, including the extent to which each species altered aspects of root system growth (e.g. rooting breadth, root length, etc.) in response to neighbours. Across all species, there was no consistent behavioural response to neighbours (i.e. no general tendencies towards root over-proliferation nor avoidance). However, there was a substantial interspecific variation showing a continuum of behavioural variation among the 20 species Multivariate analyses revealed two novel and predominant root behavioural strategies: (i) size-sensitivity, in which focal plants reduced their overall root system size in response to the presence of neighbours, and (ii) location-sensitivity, where focal plants adjusted the horizontal and vertical placement of their roots in response to neighbours. Of these, size-sensitivity represents the commonly assumed response to competitive encounters—reduced growth. However, location sensitivity is not accounted for in classic models and concepts of plant competition, though it is supported from recent work in plant behavioural ecology. We suggest that these different strategies could have important implications for the ability of a plant to persist in the face of strong competitors, and that location sensitivity may be a critical behavioural strategy promoting competitive tolerance and coexistence.
ЛАЗЕРНОЕ СКАНИРОВАНИЕ И ОБЕСПЕЧЕНИЕ ПРОСТРАНСТВЕННЫМИ ДАННЫМИ В ЭПОХУ ЦИФРОВОЙ ЭКОНОМИКИ
Creators: name: РЫЛЬСКИЙ ИЛЬЯ АРКАДЬЕВИЧ
name: ГРИБОК МАРИНА ВЛАДИМИРОВНА
name: ЕРЕМЧЕНКО ЕВГЕНИЙ НИКОЛАЕВИЧ
name: ПАНИН АЛЕКСАНДР НИКОЛАЕВИЧ
Publisher: name: Вестник науки и образования
Year: 2020
Subjects: ЛАЗЕРНОЕ СКАНИРОВАНИЕ
ПРОСТРАНСТВЕННЫЕ ДАННЫЕ
ГЕОИНФОРМАТИКА
ЦИФРОВАЯ ЭКОНОМИКА
LIDAR
SPATIAL DATA
GEOINFORMATICS
DIGITAL ECONOMICS

description: В статье анализируются этапы информационного обеспечения проектов по созданию карт территорий, соответствующие этапам развития производительных сил общества и социально-экономических формаций. Рассматривается современная проблематика информационного обеспечения хозяйственной деятельности в условиях постиндустриального общества и развития цифровой экономики. Особой чертой данного этапа развития общества является то, что это некая новая экономическая формация, в которой развитие цифровых технологий означает развитие экономики. Также предполагается, что отсутствие развития цифровых технологий приведет к стагнации. На основании описанной выше тесной взаимосвязи между информационным обеспечением пространственными данными и экономической формацией, можно сделать вывод, что в реалиях цифровой экономики информационное обеспечение пространственными данными должно быть каким-то принципиально иным, не таким, как раньше.
Direct Measure of Quantum Correlation
Creators: name: Yu, Chang-shui
name: Fan, Heng
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The quantumness of the correlation known as quantum correlation is usually measured by quantum discord. So far various quantum discords can be roughly understood as indirect measure by some special discrepancy of two quantities. We present a direct measure of quantum correlation by revealing the difference between the structures of classically and quantum correlated states. Our measure explicitly includes the contributions of the inseparability and local non-orthogonality of the eigenvectors of a density. Besides its relatively easy computability, our measure can provide a unified understanding of quantum correlation of all the present versions.
Dependence of spin torque diode voltage on applied field direction
Creators: name: Taniguchi, Tomohiro
name: Imamura, Hiroshi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The optimum condition of an applied field direction to maximize spin torque diode voltage was theoretically derived for a magnetic tunnel junction with a perpendicularly magnetized free layer and an in-plane magnetized pinned layer. We found that the diode voltage for a relatively small applied field is maximized when the projection of the applied field to the film-plane is parallel or anti-parallel to the magnetization of the pinned layer. However, by increasing the applied field magnitude, the optimum applied field direction shifts from the parallel or anti-parallel direction. These analytical predictions were confirmed by numerical simulations.
description: 7pages, 3 figures
РЕЗУЛЬТАТ ПРОГРАММЫ ОБУЧЕНИЯ ПСИХИЧЕСКОГО ЗДРАВООХРАНЕНИЯ ДЛЯ УЧАЩИХСЯ СРЕДНЕЙ ШКОЛЫ В ДАНАНГЕ, ВЬЕТНАМ
Creators: name: БУИ ТХИ ТХАНЬ ДИЕУ
Publisher: name: Вестник науки и образования
Year: 2020
Subjects: CURRICULUM
MENTAL HEALTH LITERACY
STUDENT
SECONDARY SCHOOL
УЧЕБНАЯ ПРОГРАММА
ГРАМОТНОСТЬ В ОБЛАСТИ ПСИХИЧЕСКОГО ЗДОРОВЬЯ
УЧАЩИЙСЯ
ОБЩЕОБРАЗОВАТЕЛЬНАЯ ШКОЛА

description: В статье анализируются результаты испытания учебной программы по грамотности в области психического здоровья у учащихся второсортных школ в Дананге, Вьетнам. 223 учащихся разделены на группу вмешательства и контрольную группу. Группа вмешательства принимает участие в 6 занятиях по психическому здоровью по 45 минут для каждой темы в неделю. Контрольная группа не получает вмешательства. Полученный результат свидетельствует о том, что способность выявлять психические расстройства у учащихся интервенционной группы улучшается, убеждая в причинах и методах лечения психических расстройств. В то же время дискриминационное отношение к людям с психическими расстройствами у учащихся практической группы снижается.
A Normal Abundance of Faint Satellites in the Fossil Group NGC 6482
Creators: name: Lieder, S.
name: Mieske, S.
name: Sánchez-Janssen, R.
name: Hilker, M.
name: Lisker, T.
name: Tanaka, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Fossil groups are considered the end product in a galaxy group's evolution -- a massive central galaxy that dominates the luminosity budget of the group, as the outcome of efficient merging between intermediate-luminosity members. Little is however known about the faint satellite systems of fossil groups. Here we present a SUBARU/Suprime-Cam wide-field, deep imaging study in the B- and R-band of the nearest fossil group NGC 6482 (M_{tot}\sim4\times10^{12}M_{\sun}), covering the virial radius out to 310 kpc. We perform detailed completeness estimations and select group member candidates by a combination of automated object detection and visual inspection. A fiducial sample of 48 member candidates down to M_R -10.5 mag is detected, making this study the deepest of a fossil group up to now. We investigate the photometric scaling relations, the colour-magnitude relation, and the luminosity function of our galaxy sample. We find evidence of recent and ongoing merger events among bright group galaxies. The colour-magnitude relation is comparable to that of nearby galaxy clusters, and exhibits significant scatter at the faintest luminosities. The completeness-corrected luminosity function is dominated by early-type dwarfs and is characterized by a faint end slope α=-1.32\pm0.05. We conclude that the NGC 6482 fossil group shows photometric properties consistent with those of regular galaxy clusters and groups, including a normal abundance of faint satellites.
description: 15 pages, 14 figures, A&A accepted
СТРУКТУРА ТРАВМ ЧЕЛЮСТНО-ЛИЦЕВОЙ ОБЛАСТИ ПО ДАННЫМ КЛИНИЧЕСКОЙ БОЛЬНИЦЫ СКОРОЙ МЕДИЦИНСКОЙ ПОМОЩИ (РЕСПУБЛИКА УЗБЕКИСТАН)
Creators: name: ХРАМОВА НАТАЛЬЯ ВЛАДИМИРОВНА
name: МАХМУДОВ АЛИШЕР АХМЕДОВИЧ
Publisher: name: Вестник науки и образования
Year: 2020
Subjects: ЧЕЛЮСТНО-ЛИЦЕВАЯ ОБЛАСТЬ
ТРАВМА
ПЕРЕЛОМ ЛИЦЕВЫХ КОСТЕЙ
РЕАБИЛИТАЦИЯ
MAXILLOFACIAL REGION
INJURY
FACIAL BONE FRACTURE
REHABILITATION

description: В статье анализируется структура травматических заболеваний челюстно-лицевой области в зависимости от возраста, пола, этиологии, сроков обращаемости и определение качественной оценки результатов лечения больных, по данным отделения челюстно-лицевой хирургии городской клинической больницы скорой медицинской помощи (Республика Узбекистан). В результате исследований было определено, что наибольшее количество пациентов приходится на мужской пол, в возрасте 31 40 лет, с преобладанием бытовой этиологии (82%).Среди госпитализированных в стационар больше всего больных с диагнозом «перелом костей носа» (66,4%).
Personality Profiles and Pokémon GO Engagement: A copy of the questionnaire translated to English.
Creators: name: Del Castillo, Darwin
name: Miranda, J. Jaime
name: Moscoso-Porras, Miguel
name: Villarreal-Zegarra, David
Publisher: name: figshare
Year: 2022
Subjects: subject: 111799 Public Health and Health Services not elsewhere classified
subject: FOS: Health sciences

description: The study Personality profiles and engagement with the augmented reality game Pokémon GO is a cross-sectional study that sought to to contrast personality traits between active Pokemon GO players, occasional players, former players, and people who never played Pokemon GO.
 In this file we make available a blank copy of the questionnaire used in our study. The original questionnaire was created in Spanish and this version is traslated to English.
Information requirements over the asset lifecycle to include carbon into digital twin: A UK highway example
Creators: name: Xu, Jinying
name: MacAskill, Kristen
name: Yin, Mengtian
name: Zhu, Junxiang
name: Brilakis, Ioannis
Publisher: name: Apollo - University of Cambridge Repository
Year: 2024

description: Digital twin (DT) has the potential to facilitate the reduction of carbon emissions over asset lifecycle, which is a critical target that should be instructed by real-time data. However, the trustworthy carbon data to feed into DT to support environmental impact assessment, identification of hotspots, and carbon reduction progress monitoring is largely missing in literature and practice due to the lack of a clear asset carbon information requirements (ACIR). This paper sets out to develop the ACIR for the collection of fine-granular carbon data for highway DT by reviewing relevant standards, industry guidelines, and tools and engagement with industry experts through a design-thinking workshop. A total of 74 ACIR are added to the ISO 19650 asset information requirements, among which 38 are sustainability or carbon directed and 12 are in the technical aspects. These ACIR provide a foundation for developing a carbon DT for highway assets that can facilitate real-time sustainability-orientated decision making. Future research directions to facilitate the completeness and the implementation of the ACIR are recommended.