cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Topological properties of non-centrosymmetric superconductors $T$Ir$_{2}$B$_{2}$ ($T$=Nb, Ta)
Creators: name: Gao, Yan
name: Zhang, Jian-Feng
name: Yang, Shengyuan A.
name: Liu, Kai
name: Lu, Zhong-Yi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A recent experiment reported two new non-centrosymmetric superconductors NbIr$_{2}$B$_{2}$ and TaIr$_{2}$B$_{2}$ with respective superconducting transition temperatures of 7.2 K and 5.2 K and further suggested their superconductivity to be unconventional [K. Górnicka \textit{et al}., Adv. Funct. Mater. 2007960 (2020)]. Here, based on first-principles calculations and symmetry analysis, we propose that $T$Ir$_{2}$B$_{2}$ ($T$=Nb, Ta) are topological Weyl metals in the normal state. In the absence of spin-orbit coupling (SOC), we find that NbIr$_{2}$B$_{2}$ has 12 Weyl points, and TaIr$_{2}$B$_{2}$ has 4 Weyl points, i.e. the minimum number under time-reversal symmetry; meanwhile, both of them have a nodal net composed of three nodal lines. In the presence of SOC, a nodal loop on the mirror plane evolves into two hourglass Weyl rings, along with the Weyl points, which are dictated by the nonsymmorphic glide mirror symmetry. Besides the rings, NbIr$_{2}$B$_{2}$ and TaIr$_{2}$B$_{2}$ have 16 and 20 pairs of Weyl points, respectively. The surface Fermi arcs are explicitly demonstrated. On the (110) surface of TaIr$_{2}$B$_{2}$, we find extremely long surface Fermi arcs ($\sim$0.6 ${\textÅ}^{-1}$) located 1.4 meV below the Fermi level, which should be readily probed in experiment. Combined with the intrinsic superconductivity and the nontrivial bulk Fermi surfaces, $T$Ir$_{2}$B$_{2}$ may thus provide a very promising platform to explore the three-dimensional topological superconductivity.
description: 8 pages, 5 figures, 2 tables
Chandra Observation of the Unidentified TeV Gamma-Ray Source HESS J1303-631 in the Galactic Plane
Creators: name: Mukherjee, R.
name: Halpern, J. P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The imaging atmospheric Cherenkov array H.E.S.S. recently discovered an extended source in the 0.4$-$10 TeV energy range, HESS J1303-631. We obtained a 5 ks observation with the ACIS-I array on the Chandra X-ray observatory that does not reveal an obvious compact or diffuse X-ray counterpart. Archival ROSAT images are also blank in this region. Although there are several radio pulsars within the field of HESS J1303-631, none is detected in X-rays to a flux limit of $<5 \times 10^{-14}$ ergs cm$^{-2}$ s$^{-1}$, and none is a likely counterpart on energetic grounds. Over the entire $17^{\prime} \times 17^{\prime}$ ACIS-I field, we place an upper limit of $<5.4 \times 10^{-12}$ ergs cm$^{-2}$ s$^{-1}$ on the excess diffuse flux in the 2-10 keV band. One hard point-source with flux $\approx 4 \times 10^{-14}$ ergs cm$^{-2}$ s$^{-1}$ lies within $0.^{\prime}5$ of the centroid of the TeV emission. These exploratory observations suggest that deeper pointings with Chandra and XMM are needed before we can learn more about the nature of HESS J1303-631. Its similarity to the unidentified source TeV J2032+4130 indicates the probable existence of a new class of high-energy source in the Galactic plane that originates from young, massive stars or their supernova remnants.
description: Accepted for publication in The Astrophysical Journal
Integrating DMPonline with institutional systems
Creators: name: Rudneva, Masha
name: den Heijer, Kees
name: de Water, Niels
name: Teperek, Marta
name: Schenk, Mark
Publisher: name: Zenodo
Year: 2021
Subjects: DMP
maDMP
RDM
FAIR Data
integrations
data management plans

description: This is the presentation, as well as the video recording of the final webinar of a project "Integrating DMPonline with institutional systems at TU Delft" organised on 9 December 2021. The webinar presented the key deliverables of the project and explained some of the lessons learnt. Related resources: The API scripts and documentation on the GitHub repository under GNU GPL-3.0 open source licence are available at: https://github.com/TU-Delft-DCC/ma-dmponline A statistics dashboard can be accessed at: https://dmponline-reports.tudelft.nl/ ---------------------------------------------------------------------------------------------------------------------- The project has been funded by a support grant from SURF (20210203-001-MABO-FRJA)
Promover o envolvimento e a literacia dos cidadãos: ciência cidadã na investigação em saúde
Creators: name: Santana, Elaine
name: Silva, Sílvia
name: Dobarrio, Iria
Publisher: name: Zenodo
Year: 2024

description: Apresentação realizada no Workshop 4 "Promover o envolvimento e a literacia dos cidadãos: ciência cidadã na investigação em saúde", da 15ª Conferência Lusófona de Ciência Aberta, na Escola Superior de Enfermagem do Porto (ESEP), de 01 a 04 de outubro de 2024.
Scalar perturbations in regular two-component bouncing cosmologies
Creators: name: Bozza, V.
name: Veneziano, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider a two-component regular cosmology bouncing from contraction to expansion, where, in order to include both scalar fields and perfect fluids as particular cases, the dominant component is allowed to have an intrinsic isocurvature mode. We show that the spectrum of the growing mode of the Bardeen potential in the pre-bounce is never transferred to the dominant mode of the post-bounce. The latter acquires at most a dominant isocurvature component, depending on the relative properties of the two fluids. Our results imply that several claims in the literature need substantial revision.
description: 10 pages, 1 figure
Yu-Shiba-Rusinov States and Ordering of Magnetic Impurities Near the Boundary of a Superconducting Nanowire
Creators: name: Deb, Oindrila
name: Hoffman, Silas
name: Loss, Daniel
name: Klinovaja, Jelena
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We theoretically study the spectrum induced by one and two magnetic impurities near the boundary of a one-dimensional nanowire in proximity to a conventional $s$-wave superconductor and extract the ground state magnetic configuration. We show that the energies of the subgap states, supported by the magnetic impurities, are strongly affected by the boundary for distances less than the superconducting coherence length. In particular, when the impurity is moved towards the boundary, multiple quantum phase transitions periodically occur in which the parity of the superconducting condensate oscillates between even and odd. We find that the magnetic ground state configuration of two magnetic impurities depends not only on the distance between them but also explicitly on their distance away from the boundary of the nanowire. As a consequence, the magnetic ground state can switch from ferromagnetic to antiferromagnetic while keeping the inter-impurity distance unaltered by simultaneously moving both impurities away from the boundary. The ground state magnetic configuration of two impurities is found analytically in the weak coupling regime and exactly for an arbitrary impurity coupling strength using numerical tight-binding simulations.
Direct observations of nucleation in a nondilute multicomponent alloy
Creators: name: Sudbrack, Chantal K.
name: Noebe, Ronald D.
name: Seidman, David N.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The chemical pathways leading to gamma-prime(L1_2)-nucleation from nondilute Ni-5.2 Al-14.2 Cr at.%, gamma(f.c.c.), at 873 K are followed with radial distribution functions and isoconcentration surface analyses of direct-space atom-probe tomographic images. Although Cr atoms initially are randomly distributed, a distribution of congruent Ni3Al short-range order domains (SRO), =0.6 nm, results from Al diffusion during quenching. Domain site occupancy develops as their number density increases leading to Al-rich phase separation by gamma-prime-nucleation, =0.75 nm, after SRO occurs.
description: 5 pages, 4 figures
Multilingual and cross-lingual document classification: A meta-learning approach
Creators: name: van der Heijden, Niels
name: Yannakoudakis, Helen
name: Mishra, Pushkar
name: Shutova, Ekaterina
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: The great majority of languages in the world are considered under-resourced for the successful application of deep learning methods. In this work, we propose a meta-learning approach to document classification in limited-resource setting and demonstrate its effectiveness in two different settings: few-shot, cross-lingual adaptation to previously unseen languages; and multilingual joint training when limited target-language data is available during training. We conduct a systematic comparison of several meta-learning methods, investigate multiple settings in terms of data availability and show that meta-learning thrives in settings with a heterogeneous task distribution. We propose a simple, yet effective adjustment to existing meta-learning methods which allows for better and more stable learning, and set a new state of the art on several languages while performing on-par on others, using only a small amount of labeled data.
description: 11 pages, 1 figure
Holes in the walls: primordial black holes as a solution to the cosmological domain wall problem
Creators: name: Stojkovic, Dejan
name: Freese, Katherine
name: Starkman, Glenn D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We propose a scenario in which the cosmological domain wall and monopole problems are solved without any fine tuning of the initial conditions or parameters in the Lagrangian of an underlying filed theory. In this scenario domain walls sweep out (unwind) the monopoles from the early universe, then the fast primordial black holes perforate the domain walls, change their topology and destroy them. We find further that the (old vacuum) energy density released from the domain walls could alleviate but not solve the cosmological flatness problem.
description: References added; Published in Phys. Rev. D
A importância da Ciência  Cidadã para a redução das  iniquidades em saúde
Creators: name: Biazus Dalcin, Camila
Publisher: name: Zenodo
Year: 2024

description: Apresentação realizada no Painel sobre Ciência Cidadã, da 15ª Conferência Lusófona de Ciência Aberta, na Escola Superior de Enfermagem do Porto (ESEP), de 01 a 04 de outubro de 2024.
The design and testing of a short HRT attached growth pre-fermenter system: SCVFA production by two media types and two feed sources
Creators: name: Dumitrescu, Alex
Publisher: name: University of British Columbia
Year: 2009

description: A pilot-scale, short Hydraulic Retention Time (HRT), fixed film fermenter system was constructed to test for Short Chain Volatile Fatty Acids (SCVFA) production performance at various retention times. The performance of two media types, Ringlace® and Kaldnes media, was monitored at intervals of 20min, 40min and 60min provided by three 20min hydraulic retention time (HRT) reactors in each media series. The UBC waste water pilot plant was used as the waste source for all experiments. Two fermentation runs were completed; the first using primary effluent as feed and the second using screened raw wastewater. The sampling and processing scheme addressed temporal variations in the following parameters: SCVFA concentration, total organic carbon (TOC), total chemical oxygen demand (tCOD), soluble chemical oxygen demand (sCOD) and suspended solids analysis. Turbidity analysis was attempted but was not continued for the duration of the research. Metabolic fingerprinting, using the BIOLOG plate assay, provided a snapshot of the biofilm's grouped microbial metabolic activities present at the time of sampling. SCVFA production in the BF-system was near zero in the reactors containing no media during both the primary effluent and raw wastewater runs. Significant levels of SCVFA's were produced by short HRT attached growth fermenters using both primary effluent and raw wastewater as feed. Both sets of media reactors tested produced more SCVFA's than the control reactors. TOC and sCOD analyses, which measure dissolved organics in the waste stream, indicated a net solubilization of filterable solids in both media series fed raw wastewater. Kaldnes media was deemed not suitable as a short HRT pre-fermentation media in the current BF-system configuration, due to an inability to handle the solids loading of the waste stream. Suspended solids analysis supported the choice of appropriate media for future research by demonstrating the tendency of Kaldnes media to become clogged with solids. Ringlace® media has proven itself as a suitable short HRT pre-fermentation media by resisting plugging under the solids loading conditions tested. Results of the two fermentation runs indicate that, a 60min HRT fermenter system fed raw domestic wastewater, is capable of producing significantly more SCVFA's than a system fed primary effluent, (11.2mg/l and 5.6mg/l, respectively).
AGN heating, thermal conduction and Sunyaev-Zeldovich effect in galaxy groups and clusters
Creators: name: Roychowdhury, S.
name: Ruszkowski, M.
name: Nath, B. B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (abridged) We investigate in detail the role of active galactic nuclei on the physical state of the gas in galaxy groups and clusters, and the implications for anisotropy in the CMB from Sunyaev-Zeldovich effect. We include the effect of thermal conduction, and find that the resulting profiles of temperature and entropy are consistent with observations. Unlike previously proposed models, our model predicts that isentropic cores are not an inevitable consequence of preheating. The model also reproduces the observational trend for the density profiles to flatten in lower mass systems. We deduce the energy E_agn required to explain the entropy observations as a function of mass of groups and clusters M_cl and show that E_agn is proportional to M_cl^alpha with alpha~1.5. We demonstrate that the entropy measurements, in conjunction with our model, can be translated into constraints on the cluster--black hole mass relation. The inferred relation is nonlinear and has the form M_bh\propto M_cl^alpha. This scaling is an analog and extension of a similar relation between the black hole mass and the galactic halo mass that holds on smaller scales. We show that the central decrement of the CMB temperature is reduced due to the enhanced entropy of the ICM, and that the decrement predicted from the plausible range of energy input from the AGN is consistent with available data of SZ decrement. We show that AGN heating, combined with the observational constraints on entropy, leads to suppression of higher multipole moments in the angular power spectrum and we find that this effect is stronger than previously thought.
description: accepted for publication in The Astrophysical Journal
Neural Architecture Search via Combinatorial Multi-Armed Bandit
Creators: name: Huang, Hanxun
name: Ma, Xingjun
name: Erfani, Sarah M.
name: Bailey, James
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Neural Architecture Search (NAS) has gained significant popularity as an effective tool for designing high performance deep neural networks (DNNs). NAS can be performed via policy gradient, evolutionary algorithms, differentiable architecture search or tree-search methods. While significant progress has been made for both policy gradient and differentiable architecture search, tree-search methods have so far failed to achieve comparable accuracy or search efficiency. In this paper, we formulate NAS as a Combinatorial Multi-Armed Bandit (CMAB) problem (CMAB-NAS). This allows the decomposition of a large search space into smaller blocks where tree-search methods can be applied more effectively and efficiently. We further leverage a tree-based method called Nested Monte-Carlo Search to tackle the CMAB-NAS problem. On CIFAR-10, our approach discovers a cell structure that achieves a low error rate that is comparable to the state-of-the-art, using only 0.58 GPU days, which is 20 times faster than current tree-search methods. Moreover, the discovered structure transfers well to large-scale datasets such as ImageNet.
description: 10 pages, 7 figures
Ultraviolet, X-ray, and Optical Radiation from the Geminga Pulsar
Creators: name: Kargaltsev, O. Y.
name: Pavlov, G. G.
name: Zavlin, V. E.
name: Romani, R. W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We observed the gamma-ray pulsar Geminga with the HST STIS/MAMA detectors to measure the Geminga's UV spectrum and pulsations. The slope of the far-UV (FUV) spectrum is close to that of a Rayleigh-Jeans spectrum, suggesting that the FUV radiation is dominated by thermal emission from the neutron star (NS) surface. The measured FUV flux, F_FUV=(3.7+/-0.2)x10^-15 ergs cm^-2 s^-1 in 1155-1702 A band, corresponds to a brightness temperature T_RJ=(0.3-0.4)(d_200/R_13)^2 MK. The soft thermal component of the Geminga's X-ray spectrum measured with the XMM-Newton observatory corresponds to a temperature T_s=0.49+/-0.01 MK and radius R_s = (12.9+/-1.0)d_200 km. Unlike other NSs detected in the UV-optical, the FUV spectrum of Geminga lies below the extrapolation of the soft thermal component, which might be associated with the Geminga's very low temperature. Surprisingly, the thermal FUV radiation is strongly pulsed, showing a narrow dip at a phase close to that of a broader minimum of the soft X-ray light curve. The strong pulsations might be attributed to partial occultations of the thermal UV radiation by regions of the magnetosphere filled with electron/positron plasma. In contrast with the FUV spectrum, the near-IR (NIR) through near-UV (NUV) spectrum of Geminga is clearly nonthermal. It can be described by a power-law model, F_nu \propto nu^{-alpha} with a slope alpha = 0.43+/-0.15, close to alpha = 0.56+/-0.24 of the hard X-ray (E>2.5 keV) magnetospheric component. The observed NIR-optical-NUV spectrum is marginally consistent with the extrapolation of the X-ray magnetospheric spectrum. The NUV pulsations, however, do not show a clear correlation with the hard X-ray pulsations.
description: 17 pages including 14 figures, ApJ, 625 in press
Ciência cidadã: perspetiva de cidadã nas ciências da saúde
Creators: name: Mateus, Elsa
Publisher: name: Zenodo
Year: 2024

description: Apresentação realizada no Painel "Ciência Cidadã", da 15ª Conferência Lusófona de Ciência Aberta, na Escola Superior de Enfermagem do Porto (ESEP), de 01 a 04 de outubro de 2024.
Fitness consequences of longer breeding seasons
Creators: name: Halupka, Konrad
name: Halupka, Lucyna
name: Neubauer, Grzegorz
name: Borowiec, Marta
Publisher: name: figshare
Year: 2021
Subjects: subject: 60299 Ecology not elsewhere classified
subject: FOS: Biological sciences
subject: 50101 Ecological Impacts of Climate Change
subject: FOS: Earth and related environmental sciences
subject: Ecology

description: Supplementary data (details of modelling) to the manuscript:
Halupka L, Borowiec M , Neubauer G, Halupka K (2020) Fitness consequences of longer breeding seasons of a migratory passerine under changing climatic conditions, submitted to JAE
Recent results on saturation and CGC
Creators: name: Itakura, K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: I discuss recent results on the Color Glass Condensate which is a dense saturated gluonic state and appears as the universal picture of hadrons or nuclei at very high energies.
description: 10 pages, 4 figures. Plenary talk given at 18th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions: Quark Matter 2005, Budapest, Hungary, 4-9 Aug 2002
A celestial matryoshka: Dynamical and spectroscopic analysis of the Albireo system
Creators: name: Drimmel, Ronald
name: Sozzetti, Alessandro
name: Schroeder, Klaus-Peter
name: Bastian, Ulrich
name: Pinamonti, Matteo
name: Jack, Dennis
name: Huerta, Missael A. Hernandez
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences
subject: 85-02

description: We present a spectroscopic characterisation and a new orbital solution for the binary system beta Cyg Aa/Ac (MCA 55), the primary component (beta Cyg A) of the well-known wide double star Albireo. By matching evolutionary tracks to the physical parameters of all three Albireo stars (beta Cyg Aa, Ac and B) as obtained from a spectroscopic analysis of TIGRE and IUE spectra, we confirm that they are likely coeval. Our final orbit solution is based on radial-velocity measurements taken over a baseline exceeding $120$ years, combined with relative astrometry from speckle interferometric observations and the absolute astrometry from the Hipparcos and Gaia missions. Our final orbit solution has a period of $121.65^{+3.34}_{-2.90}$ years with an eccentricity of $0.20^{+0.01}_{-0.02}$. Thanks to the inclusion of the absolute astrometry, we find a mass ratio of $q = 1.25^{+0.19}_{-0.17}$, and a total mass of $9.47_{-3.24}^{+5.88}$ M$_\odot$, indicating that the secondary (Ac) is the more massive of the pair. These results strongly suggest the presence of a fourth, unseen, member of the Albireo system. Given the current photometric data it is likely that beta Cyg A is itself a hierarchical triple. We also derive the systemic proper motion, line-of-sight velocity, and an orbital parallax of the beta Cyg A system, allowing us to quantitatively assess the hypothesis that Albireo A and B form a physically bound and genealogically connected system. Finally, we find four potential members of a common proper motion group with Albireo, though none anywhere as close by as the Albireo components A to B.
description: final draft of accepted manuscript
Hadrons in Medium
Creators: name: Mosel, U.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In these lectures I first give a motivation for investigations of in-medium properties of hadrons. I discuss the relevant symmetries of QCD and how they might affect the observed hadron properties. I then discuss at length the observable consequences of in-medium changes of hadronic properties in reactions with elementary probes, and in particular photons, on nuclei. Here I put an emphasis on new experiments on changes of the sigma and omega mesons in medium.
description: Lecture at "Workshop on Hadron Physics", Puri, India, March 7 - 17, 2005
Compilation of Giant Electric Dipole Resonances Built on Excited States
Creators: name: Schiller, A.
name: Thoennessen, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Giant Electric Dipole Resonance (GDR) parameters for gamma decay to excited states with finite spin and temperature are compiled. Over 100 original works have been reviewed and from some 70 of which more than 300 parameter sets of hot GDR parameters for different isotopes, excitation energies, and spin regions have been extracted. All parameter sets have been brought onto a common footing by calculating the equivalent Lorentzian parameters. The current compilation is complementary to an earlier compilation by Samuel S. Dietrich and Barry L. Berman (At. Data Nucl. Data Tables 38(1988)199-338) on ground-state photo-neutron and photo-absorption cross sections and their Lorentzian parameters. A comparison of the two may help shed light on the evolution of GDR parameters with temperature and spin. The present compilation is current as of January 2006.
description: 31 pages including 1 table
Anomalous dimensions at large charge in d=4 O(N) theory
Creators: name: Jack, I.
name: Jones, D. R. T
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recently it was shown that the scaling dimension of the operator $ϕ^n$ in $λ(ϕ^*ϕ)^2$ theory may be computed semi-classically at the Wilson-Fisher fixed point in $d=4-ε$, for generic values of $λn$ and this was verified to two loop order in perturbation theory at leading and sub-leading $n$. In subsequent work, this result was generalised to operators of fixed charge $Q$ in $O(N)$ theory and verified up to three loops in perturbation theory at leading and sub-leading order. Here we extend this verification to four loops in $O(N)$ theory, once again at leading and sub-leading order. We also investigate the strong-coupling regime.
description: 16 pages. 6 Figures. Typos corrected; references and an acknowledgement added. Some minor errors corrected in a figure and equations
MPEC 2024-A71 : 2001 KO41
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
How do Practitioners Perceive the Relevance of Requirements Engineering Research?
Creators: name: Franch, Xavier
name: Mendez, Daniel
name: Vogelsang, Andreas
name: Heldal, Rogardt
name: Knauss, Eric
name: Oriol, Marc
name: Travassos, Guilherme H.
name: Carver, Jeffrey C.
name: Zimmermann, Thomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: The relevance of Requirements Engineering (RE) research to practitioners is vital for a long-term dissemination of research results to everyday practice. Some authors have speculated about a mismatch between research and practice in the RE discipline. However, there is not much evidence to support or refute this perception. This paper presents the results of a study aimed at gathering evidence from practitioners about their perception of the relevance of RE research and at understanding the factors that influence that perception. We conducted a questionnaire-based survey of industry practitioners with expertise in RE. The participants rated the perceived relevance of 435 scientific papers presented at five top RE-related conferences. The 153 participants provided a total of 2,164 ratings. The practitioners rated RE research as essential or worthwhile in a majority of cases. However, the percentage of non-positive ratings is still higher than we would like. Among the factors that affect the perception of relevance are the research's links to industry, the research method used, and respondents' roles. The reasons for positive perceptions were primarily related to the relevance of the problem and the soundness of the solution, while the causes for negative perceptions were more varied. The respondents also provided suggestions for future research, including topics researchers have studied for decades, like elicitation or requirement quality criteria.
description: Accepted at IEEE Transactions on Software Engineering
Fitness consequences of longer breeding seasons
Creators: name: Halupka, Konrad
name: Halupka, Lucyna
name: Neubauer, Grzegorz
name: Borowiec, Marta
Publisher: name: figshare
Year: 2020
Subjects: subject: 60299 Ecology not elsewhere classified
subject: FOS: Biological sciences
subject: 50101 Ecological Impacts of Climate Change
subject: FOS: Earth and related environmental sciences
subject: Ecology

description: Supplementary data (details of modelling) to the manuscript:
Halupka L, Borowiec M , Neubauer G, Halupka K (2020) Fitness consequences of longer breeding seasons of a migratory passerine under changing climatic conditions, submitted to JAE
I-Brane Dynamics
Creators: name: Itzhaki, Nissan
name: Kutasov, David
name: Seiberg, Nathan
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the dynamics near a 1+1 dimensional intersection of two orthogonal stacks of fivebranes in type IIB string theory, using an open string description valid at weak coupling, and a closed string description valid at strong coupling. The weak coupling description suggests that this system is invariant under eight supercharges with a particular chirality in 1+1 dimensions, and its spectrum contains chiral fermions localized at the intersection. The closed string description leads to a rather different picture -- a three dimensional Poincare invariant theory with a gap and sixteen supercharges. We show that this dramatic change in the behavior of the system is partly due to anomaly inflow. Taking it into account leads to a coherent picture, both when the fivebranes in each stack are coincident and when they are separated.
description: 43 pages, 4 figures
Mapping of Literature in the Field of Chemo-informatics
Creators: name: Rajani Mishra
Publisher: name: Faculty of Informatics, Mahasarakham University
Year: 2024
Subjects: Chemical Informatics
Feature Map
Content Map
Concept Map
Visualization
Annual Growth Rate
Collaboration Coefficient
International Cooperation Index

description: Journal of Applied Informatics and Technology, 6, 1, 16-32
Cognition, compassion and wellbeing among people with Parkinson's
Creators: name: Sowter, Natalie
Publisher: name: Lancaster University
Year: 2019
Subjects: Parkinson's disease
cognition
psychological wellbeing
psychological distress
self-compassion
stigma

description: This thesis considers some of the cognitive, social and psychological factors which impact upon the wellbeing of people with Parkinson’s. Section One reports a systematic literature review of the relationship between anxiety and cognition for people with Parkinson’s. The electronic databases CINAHL, Medline, PsycINFO and Web of Science were searched and 39 eligible studies were identified. The findings suggested that higher anxiety is associated with worse global cognition and worse performance in specific cognitive domains (attention, working memory, executive functioning, memory, language, semantic verbal fluency and visuospatial skills) among people with Parkinson’s. However, several studies did not identify significant relationships. Studies varied in design and quality, several having small samples. Relationships between anxiety and cognition among people with Parkinson’s appear to be complex and may be influenced by other factors. Implications for clinical practice are discussed. Section Two describes a quantitative, cross-sectional, observational study into the relationships between self-compassion, stigma and psychological distress among people with Parkinson’s. Participants were 138 people with Parkinson’s, who completed questionnaires measuring self-compassion, enacted and felt stigma, and depression, anxiety and stress. All variables were found to correlate significantly in the expected directions. The stigma variables were significant mediators in the relationships between self-compassion and the three outcome variables - depression, anxiety and stress. Part of the relationship between self-compassion and psychological distress appears to occur via the internalisation of stigma. These findings may be relevant to individualised and societal interventions with the aim of improving the psychological wellbeing of people with Parkinson’s. Section Three provides a critical appraisal of the thesis. This includes a summary of the main findings, consideration of language and concepts, a discussion of some of the issues relating to each paper and suggestions for further research.
To better understand the formation of short-chain acids in combustion systems
Creators: name: Battin-Leclerc, Frédérique
name: Konnov, A. A.
name: Jaffrezo, J. L.
name: Legrand, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Our study aims at a better control and understanding of the transfer of a complex [DNA supercoiled plasmid - dodecyltrimethylammonium surfactant] layer from a liquid-vapour water interface onto a silicon surface without any additional cross-linker. The production of the complexed layer and its transfer from the aqueous subphase to the substrate is achieved with a Langmuir-Blodgett device. The substrate consists of a reconstructed boron doped silicon substrate with a nanometer-scale roughness. Using X-ray photoelectron spectroscopy and atomic force microscopy measurements, it is shown that the DNA complexes are stretched in a disorderly manner throughout a 2-4 nm high net-like structure. The mechanism of transfer of this layer onto the planar surface of the semi-conductor and the parameters of the process are analysed and illustrated by atomic force microscopy snapshots. The molecular layer exhibits the typical characteristics of a spinodal decomposition pattern or dewetting features. Plasmid molecules appear like long flattened fibers covering the surface, forming holes of various shapes and areas. The cluster-cluster aggregation of the complex structure gets very much denser on the substrate edge. The supercoiled DNA plasmids undergo conformational changes and a high degree of condensation and aggregation is observed.
Modeling Deep Feature for Lung Disease Classification in Chest X-ray Images
Creators: name: Khaing, Ei Ei
Publisher: name: Faculty of Informatics, Mahasarakham University
Year: 2024
Subjects: CNN
AlexNet
LSTM
SVM Classifier
Lung Disease
Classifier Performance

description: Journal of Applied Informatics and Technology, 6, 1, 33-51
Statistical learning for accurate and interpretable battery lifetime prediction
Creators: name: Attia, Peter M.
name: Severson, Kristen A.
name: Witmer, Jeremy D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Data-driven methods for battery lifetime prediction are attracting increasing attention for applications in which the degradation mechanisms are poorly understood and suitable training sets are available. However, while advanced machine learning and deep learning methods promise high performance with minimal data preprocessing, simpler linear models with engineered features often achieve comparable performance, especially for small training sets, while also providing physical and statistical interpretability. In this work, we use a previously published dataset to develop simple, accurate, and interpretable data-driven models for battery lifetime prediction. We first present the "capacity matrix" concept as a compact representation of battery electrochemical cycling data, along with a series of feature representations. We then create a number of univariate and multivariate models, many of which achieve comparable performance to the highest-performing models previously published for this dataset. These models also provide insights into the degradation of these cells. Our approaches can be used both to quickly train models for a new dataset and to benchmark the performance of more advanced machine learning methods.
description: Submitted to the Journal of the Electrochemical Society
CityGML 3.0 Vegetation ADE Proposal
Creators: name: Petrova-Antonova, Dessislava
name: Mrosla, Laura
name: Malinov, Simeon
Publisher: name: Zenodo
Year: 2024
Subjects: CityGML 3.0
Vegetation ADE
Data Modeling

description: The document at hand provides guidance on the use of the Open Geospatial Consortium (OGC) CityGML 3.0 Conceptual Model (CM) and the proposed Vegetation Application Domain Extension (ADE).

This document supports the survey for the evaluation of the CityGML Vegetation ADE. The descriptions of the CityGML Conceptual Model (CM) and the proposed ADE have been simplified to retain essential information while reducing complexity. This approach ensures that even those unfamiliar with the standard can understand the content, benefit from it, and contribute to enhancing the Vegetation ADE.

The document at hand is a non-normative resource and not an official position of the Open Geospatial Consortium (OGC).

Except for the CityGML Vegetation ADE proposal, all the information provided in this document is retrieved from the official CityGML documentation:

·        OGC City Geography Markup Language (CityGML) 3.0 Conceptual Model Users Guide; 

·        OGC City Geography Markup Language (CityGML) Part 1: Conceptual Model Standard.

The proposed CityGML Vegetation ADE is subject to change.
Heavy Residue Isoscaling as a Probe of the Symmetry Energy of Hot Fragments
Creators: name: Souliotis, G. A.
name: Shetty, D. V.
name: Keksis, A.
name: Bell, E.
name: Jandel, M.
name: Veselsky, M.
name: Yennello, S. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The isoscaling properties of isotopically resolved projectile residues from peripheral collisions of 86Kr (25 MeV/nucleon), 64Ni (25 MeV/nucleon) and 136Xe (20 MeV/nucleon) beams on various target pairs are employed to probe the symmetry energy coefficient of the nuclear binding energy. The present study focuses on heavy projectile fragments produced in peripheral and semiperipheral collisions near the onset of multifragment emission E*/A = 2-3 MeV). For these fragments, the measured average velocities are used to extract excitation energies. The excitation energies, in turn, are used to estimate the temperatures of the fragmenting quasiprojectiles in the framework the Fermi gas model. The isoscaling analysis of the fragment yields provided the isoscaling parameters "alpha" which, in combination with temperatures and isospin asymmetries provided the symmetry energy coefficient of the nuclear binding energy of the hot fragmenting quasiprojectiles. The extracted values of the symmetry energy coefficient at this excitation energy range (2-3 MeV/nucleon) are lower than the typical liquid-drop model value ~25 MeV corresponding to ground-state nuclei and show a monotonic decrease with increasing excitation energy. This result is of importance in the formation of hot nuclei in heavy-ion reactions and in hot stellar environments such as supernova.
description: 11 pages, 9 figures, submitted to Phys. Rev. C
Language change in a multiple contact setting: The case of Sarnami (Suriname)
Creators: name: Yakpo, Kofi
name: Muysken, Pieter
Publisher: name: Zenodo
Year: 2014
Subjects: Multilingualism
Suriname
Koine
Hindustani
Bhojpuri
Hindi
Language change
Language contact
Dutch
Creole
Sranan
Word order
Convergence
India
Diaspora
Indic
Indo-Aryan
Traces of Contact

description: The South American nation of Suriname features a situation of multiple language contact in which speakers use various languages in changing constellations, and often simultaneously. Sarnami (Surinamese Hindustani) shows traces of koineization of various Indian languages, and the effects of multilingualism involving Sranan Tongo and Dutch, the two dominant languages of Suriname. Sarnami has undergone substantial contact-induced change in its lexicon and grammar, including the rise of SVO alongside the inherited SOV basic word order. We conclude that the ever growing influence of Sranan Tongo and Dutch may lead to more extensive restructuring with similar outcomes as “creolization”. Traditional labels are therefore not always adequate beyond the realm of the canonical creoles involving European lexifiers and (West) African substrate languages.
Efficient preparation of 2D defect-free atom arrays with near-fewest sorting-atom moves
Creators: name: Sheng, Cheng
name: Hou, Jiayi
name: He, Xiaodong
name: Xu, Peng
name: Wang, Kunpeng
name: Zhuang, Jun
name: Li, Xiao
name: Liu, Min
name: Wang, Jin
name: Zhan, Mingsheng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Sorting atoms stochastically loaded in optical tweezer arrays via an auxiliary mobile tweezer is an efficient approach to preparing intermediate-scale defect-free atom arrays in arbitrary geometries. However, high filling fraction of atom-by-atom assemblers is impeded by redundant sorting moves with imperfect atom transport, especially for scaling the system size to larger atom numbers. Here, we propose a new sorting algorithm (heuristic cluster algorithm, HCA) which provides near-fewest moves in our tailored atom assembler scheme and experimentally demonstrate a $5\times6$ defect-free atom array with 98.4(7)$\%$ filling fraction for one rearrangement cycle. The feature of HCA that the number of moves $N_{m}\approx N$ ($N$ is the number of defect sites to be filled) makes the filling fraction uniform as the size of atom assembler enlarged. Our method is essential to scale hundreds of assembled atoms for bottom-up quantum computation, quantum simulation and precision measurement.
Éditorial
Creators: name: Dagenais, Christian
name: Houlfort, Nathalie
Publisher: name: Revue francophone de recherche sur le transfert et l’utilisation des connaissances
Year: 2020

description: Éditorial du premier numéro de la Revue Tuc, Revue francophone de recherche sur le transfert et l’utilisation des connaissances.
description: Revue francophone de recherche sur le transfert et l’utilisation des connaissances , Vol. 1 No 1 (2016)
Electronic structure and parity effects in correlated nanosystems
Creators: name: Rycerz, Adam
name: Spalek, Jozef
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We discuss the spectral, transport and magnetic properties of quantum nanowires composed of N\leq 13 atoms and containing either even or odd numbers of valence electrons. In our approach we combine Exact Diagonalization and Ab Initio calculations (EDABI method). The analysis is performed as a function of the interatomic distance. The momentum distribution differs drastically for those obtained for even N with those for odd N, whereas the Drude weight evolves smoothly. A role of boundary conditions is stressed.
description: 4 pages, 3 figures
Aproximar a ciência, a tecnologia e a inovação do quotidiano das comunidades locais, como ferramentas para o desenvolvimento sustentável
Creators: name: Vicente, Maria
Publisher: name: Zenodo
Year: 2024

description: Apresentação realizada no Painel "Ciência Cidadã”, da 15ª Conferência Lusófona de Ciência Aberta, na Escola Superior de Enfermagem do Porto (ESEP), de 01 a 04 de outubro de 2024.
Evaluating the quality of clinical trials using a Clinical Trial Evaluation System (CTES)
Creators: name: Franciosi, Luigi Giuseppe
Publisher: name: University of British Columbia
Year: 2009

description: A clinical trial is commonly defined as a human experiment that has the potential to improve the quality of health care. It is also an argument. In the realm of medical investigations, a clinical trial is classified as an experimental analytic study because it can be designed and implemented in a manner that allows investigators to argue on the basis of objective, unbiased evidence. Currently, there is a need for such evidence by medical decision-makers. The scientific basis of this 'evidence-based medicine' relies upon clinical trials, in particular, randomised controlled trials (RCTs). These trials are regarded as the most reliable trials for evaluating treatments. However, the best available evidence is usually something less than a RCT. Between the years of 1993 and 1997, I assisted in the design and implementation of six clinical trials. I wanted to evaluate the quality of my trials, but I realised that many scales and checklists available were only concerned with assessing a trial's design and analysis. Little consideration was made about a trial's implementation. Thus, based on my intimate knowledge of clinical trials, I developed a Clinical Trial Evaluation System (CTES) that allowed me to assess the amount my trials, or any clinical trial, deviated from a randomised controlled trial done according to "Good Clinical Practices". The evaluation involved determining whether or not items relevant to the trial's question, design, statistics, ethics, and standard operating procedures were considered. For each of my trials, I derived a clinical trial score that I then turned into a % deviation from the best possible trial. All of the trials deviated for many reasons. The strengths of CTES are the assessment of a trial's quality following its completion, the comparison of trial scores and % deviations, the determination of deviation patterns within and amongst trials, and the explanations for why deviations occurred from the best possible trial. Another strength is the better planning of subsequent clinical trials. Future developments of the system will involve the refinement of CTES, the determination of interrater reliability, the estimation of time for completion, and the creation of relational database for evaluating and planning clinical trial protocols. I believe that students, clinicians, and evidence-based medicine organisations can optimise the quality of their trials by using the Clinical Trial Evaluation System.
Portrait des pratiques de transfert de connaissances des chercheurs de l’Université de Montréal
Creators: name: Dagenais, Christian
name: Croteau, Marc-Olivier
name: Ouimet, Mathieu
name: Lord, Catherine
Publisher: name: Revue francophone de recherche sur le transfert et l’utilisation des connaissances
Year: 2017

description: Malgré un courant favorable à l’utilisation des connaissances issues de la recherche par les milieux de pratique, beaucoup reste à faire pour favoriser l’implication des chercheurs dans les processus de transfert de connaissances (TC). Les besoins et les attentes des chercheurs dans le processus de TC ont été très peu explorés. L’objectif de la présente étude est d’établir un portrait représentatif des pratiques de TC des chercheurs de l’Université de Montréal et d’explorer les facteurs pouvant influencer ces dernières. Au total, 1 236 professeurs ont été sollicités pour répondre à un questionnaire auto-rapporté et 431 professeurs (35 %) l’ont complété. La collecte de données s’est étendue de juillet 2012 à juin 2013. La majorité des répondants (74 %) rapportent avoir eu des activités de TC plus d’une fois au cours des 12 mois précédents l‘enquête, alors que le quart en rapportent très peu (soit aucun échange ou une seule fois au cours des 12 derniers mois). Les analyses ont révélé que les caractéristiques du chercheur et de son milieu (soit le temps consacré à la recherche, la méthode de recherche utilisée, la détention d’une subvention incluant un volet TC) sont significativement associées à la fréquence des échanges avec les milieux de pratiques. Pour réduire l’écart qui subsiste entre les connaissances scientifiques disponibles et leur utilisation, d’autres investigations sont nécessaires afin de mieux comprendre les facteurs liés à l’implication des chercheurs dans le TC.
description: Revue francophone de recherche sur le transfert et l’utilisation des connaissances , Vol. 2 No 1 (2017)