cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Obscured AGN at z~1 from the zCOSMOS-Bright Survey I. Selection and Optical Properties of a [Ne v]-selected sample
Creators: name: Mignoli, M.
name: Vignali, C.
name: Gilli, R.
name: Comastri, A.
name: Zamorani, G.
name: Bolzonella, M.
name: Bongiorno, A.
name: Lamareille, F.
name: Nair, P.
name: Pozzetti, L.
name: Lilly, S. J.
name: Carollo, C. M.
name: Contini, T.
name: Kneib, J. P.
name: Fevre, O. Le
name: Mainieri, V.
name: Renzini, A.
name: Scodeggio, M.
name: Bardelli, S.
name: Caputi, K.
name: Cucciati, O.
name: de la Torre, S.
name: de Ravel, L.
name: Franzetti, P.
name: Garilli, B.
name: Iovino, A.
name: Kampczyk, P.
name: Knobel, C.
name: Kovac, K.
name: Borgne, J. F. Le
name: Brun, V. Le
name: Maier, C.
name: Pello, R.
name: Peng, Y.
name: Montero, E. Perez
name: Presotto, V.
name: Silverman, J. D.
name: Tanaka, M.
name: Tasca, L.
name: Tresse, L.
name: Vergani, D.
name: Zucca, E.
name: Bordoloi, R.
name: Cappi, A.
name: Cimatti, A.
name: Koekemoer, A. M.
name: McCracken, H. J.
name: Moresco, M.
name: Welikala, N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A sample of 94 narrow line AGN with 0.65
description: 14 pages, 12 figures, accepted for publication in A&A
Investigation of the Attachment of Circulating Endothelial Cells to a Cell Probe: Combined Experimental and Numerical Study
Creators: name: Hehnen, Felix
name: Wendt, Gabi
name: Schaller, Jens
name: Geus, Paul
name: Villwock, Joachim
name: Kertzscher, Ulrich
name: Goubergrits, Leonid
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2021
Subjects: subject: cell attachment
subject: circulating endothelial cells
subject: computational fluid dynamics
subject: liquid biopsy
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: Circulating endothelial cells (CECs) are a reliable biomarker for cardiovascular diseases (CVDs). A major unresolved challenge limiting the widespread use of CECs for the diagnosis and monitoring of CVDs is their unreliable detection. This problem is mainly attributed to the low sample volume (5-10 mL) of commonly used ex vivo CEC isolation methods. To overcome this limitation, the BMProbe for the in vivo isolation of CECs is proposed. It consists of a twisted medical flat wire with a polymer-coated surface functionalized with anti-CD105 antibodies. A combined experimental and numerical study is performed to investigate which flow conditions lead to an increased cell attachment to the probe's surface. Endothelial cells are solved in a dextran solution and circulated in a flow system containing the BMProbes. Microscopic images of the attached CECs are taken. In addition, the experiments are simulated using a computational fluid dynamics (CFD) flow solver to quantify the flow conditions at the probe's surface. The microscopic images are superimposed with the CFD data to investigate the influence of wall shear rate and wall normal rate on the attachment of CECs to the probe. Most of all attached cells (85.5%) are found in areas of negative wall normal rate.
Effects of quasiparticle tunneling in a circuit-QED realization of a strongly driven two-level system
Creators: name: Leppäkangas, J.
name: de Graaf, S. E.
name: Adamyan, A.
name: Fogelström, M.
name: Danilov, A. V.
name: Lindström, T.
name: Kubatkin, S. E.
name: Johansson, G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We experimentally and theoretically study the frequency shift of a driven cavity coupled to a superconducting charge qubit. In addition to previous studies, we here also consider drive strengths large enough to energetically allow for quasiparticle creation. Quasiparticle tunneling leads to the inclusion of more than two charge states in the dynamics. To explain the observed effects, we develop a master equation for the microwave dressed charge states, including quasiparticle tunneling. A bimodal behavior of the frequency shift as a function of gate voltage can be used for sensitive charge detection. However, at weak drives the charge sensitivity is significantly reduced by non-equilibrium quasiparticles, which induce transitions to a non-sensitive state. Unexpectedly, at high enough drives, quasiparticle tunneling enables a very fast relaxation channel to the sensitive state. In this regime, the charge sensitivity is thus robust against externally injected quasiparticles and the desired dynamics prevail over a broad range of temperatures. We find very good agreement between theory and experiment over a wide range of drive strengths and temperatures.
description: 25 pages, 7 figures
A Research Plan for Spelling Reform: High/Scope Educational Research Foundation
Creators: name: Supanich, Gary P.
Publisher: name: Zenodo
Year: 1987
Subjects: spelling reform

description: In this report, the High/Scope Educational Research Foundation outlines a plan toward the implementation of an alternative spelling system for the English language. Our purpose is to provide the BEtSS organization (Better Education thru Simplified Spelling, Inc.) with a feasible set of proposals whereby they can move toward their goal of accomplishing spelling reform in the United States within a period of 20 to 30 years.
The inverse function theorem and the resolution of the Jacobian conjecture in free analysis
Creators: name: Pascoe, J. E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Functional Analysis (math.FA)
subject: Commutative Algebra (math.AC)
subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: Primary 46L52, Secondary 14A25, 47A56

description: We establish an invertibility criterion for free polynomials and free functions evaluated on some tuples of matrices. We show that if the derivative is nonsingular on some domain closed with respect to direct sums and similarity, the function must be invertible. Thus, as a corollary, we establish the Jacobian conjecture in this context. Furthermore, our result holds for commutative polynomials evaluated on tuples of commuting matrices.
title: BfR2GO - Ausgabe 1/2019: Schwerpunkt Antibiotikaresistente Erreger
Creators: name: Bundesinstitut Für Risikobewertung
Publisher: name: Bundesinstitut für Risikobewertung
Year: 2019
Subjects: subject: 500

description: Wissenschaftsmagazin, vol. 1, 2019
Building virtual patients with generative AI: Opportunities and challenges
Creators: name: Jefferies, Chris
name: Potter, Lewis
Publisher: name: F1000 Research Limited
Year: 2024

description: Background



Generative AI describes any form of artificial intelligence (AI) that can produce new text, images, video or other content. Large language models (LLMs) are a form of generative AI which can generate human-like text. They are trained on large amounts of text data and have been made popular by the launch of publicly available chatbots, including ChatGPT and Google Bard. Virtual patients simulate real-life clinical scenarios and can be used to teach knowledge, communication skills and clinical reasoning.



Summary of Work



Given the challenges learners can face in accessing opportunities to practice communication skills in person, particularly in busy healthcare environments, we aimed to develop a collection of realistic virtual patients using LLM technology. The virtual patients enable learners to practise their communication and clinical reasoning skills. A database of patient scripts was created, reflecting common patient presentations (e.g. chest pain, breathlessness). Each script consisted of a condensed summary of the patient’s presentation, including relevant past medical and psychosocial history.



Utilising OpenAI’s GPT-3.5 and GPT-4 large language models, we developed an interactive chat interface that allows learners to engage with virtual patients generated from the patient scripts. Users can interact with the virtual patient via text or voice. This interaction mimics a real clinical encounter, facilitating natural conversation with the patient.



The virtual patients can be accessed here.



Summary of Results



Since their introduction on the Geeky Medics platform, learners have conducted over 83,000 consultations with virtual patients. Implementation challenges included user feedback about occasional 'hallucinations' and off-topic responses from the virtual patients.



Discussion and Conclusions



Our findings demonstrate the viability of using LLM technology, specifically GPT-3.5 and GPT-4, to create realistic virtual patients. Despite challenges like 'hallucinations' and off-topic responses, the high volume of consultations indicates strong engagement and potential for this tool to enhance communication and clinical reasoning skills. This approach offers a scalable, accessible way to supplement traditional clinical training, especially in environments with limited direct patient contact.



Take Home Messages



Large Language Models are a novel method for creating virtual patients. They can simulate realistic patient interactions and may provide a useful adjunct to traditional clinical training.
title: Neuartige Erreger in Rind und Kuhmilchprodukten: Weitere Forschung notwendig: Stellungnahme Nr. 014/2019 des BfR vom 18. April 2019
Creators: name: Bundesinstitut Für Risikobewertung
Publisher: name: Bundesbehörden und Einrichtungen im Geschäftsbereich des Bundesministeriums für Ernährung und Landwirtschaft (BMEL)
Year: 2019
Subjects: subject: 000

description: BfR-Stellungnahmen, vol. 2019, no. 014
Constraints on a possible dibaryon from combined analysis of the $pn \to d π^+ π^-$ and $pn \to pn π^+ π^-$ cross sections
Creators: name: Albaladejo, Miguel
name: Oset, Eulogio
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We use recent data that show a narrow peak around $\sqrt{s}=2.37\ \text{GeV}$ in the $pn \to d π^+ π^-$ cross section, with about double strength at the peak than in the analogous $pn \to d π^0 π^0$ reaction, and, assuming that it is due to the excitation of a dibaryon resonance, we evaluate the cross section for the $pn \to pn π^+ π^-$ reaction, with the final $pn$ unbound but with the same quantum numbers as the deuteron. We use accurate techniques to determine the final state interaction in the case of the $pn$ forming a deuteron or a positive energy state, which allow us to get the $pn \to pn π^+ π^-$ cross section with $pn$ in I=0 and S=1, that turns out to be quite close or saturates the experimental $pn \to pn π^+ π^-$ total cross section around $\sqrt{s} = 2.37\ \text{GeV}$, depending on the angular momentum assumed. We then parametrize a background with different methods, and the sum of the resonant and background contributions is fitted to present data. The resulting cross section exceeds the experimental results in the region of the resonant peak, showing a problem in the dibaryon hypothesis. Yet, in view of the dispersion of present experimental data, and the scarce information around $\sqrt{s} = 2.37\ \text{GeV}$, a call is made for precise measurements of the $pn \to pnπ^+π^-$ reaction around this energy, to further clarify this issue.
A high-speed multi-protocol quantum key distribution transmitter based on a dual-drive modulator
Creators: name: Korzh, Boris
name: Walenta, Nino
name: Houlmann, Raphael
name: Zbinden, Hugo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We propose a novel source based on a dual-drive modulator that is adaptable and allows Alice to choose between various practical quantum key distribution (QKD) protocols depending on what receiver she is communicating with. Experimental results show that the proposed transmitter is suitable for implementation of the Bennett and Brassard 1984 (BB84), coherent one-way (COW) and differential phase shift (DPS) protocols with stable and low quantum bit error rate. This could become a useful component in network QKD, where multi-protocol capability is highly desirable.
description: 15 pages, 7 figures
Are collapse models testable with quantum oscillating systems? The case of neutrinos, kaons, chiral molecules
Creators: name: Bahrami, M.
name: Donadi, S.
name: Ferialdi, L.
name: Bassi, A.
name: Curceanu, C.
name: Di Domenico, A.
name: Hiesmayr, B. C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Collapse models provide a theoretical framework for understanding how classical world emerges from quantum mechanics. Their dynamics preserves (practically) quantum linearity for microscopic systems, while it becomes strongly nonlinear when moving towards macroscopic scale. The conventional approach to test collapse models is to create spatial superpositions of mesoscopic systems and then examine the loss of interference, while environmental noises are engineered carefully. Here we investigate a different approach: We study systems that naturally oscillate --creating quantum superpositions-- and thus represent a natural case-study for testing quantum linearity: neutrinos, neutral mesons, and chiral molecules. We will show how spontaneous collapses affect their oscillatory behavior, and will compare them with environmental decoherence effects. We will show that, contrary to what previously predicted, collapse models cannot be tested with neutrinos. The effect is stronger for neutral mesons, but still beyond experimental reach. Instead, chiral molecules can offer promising candidates for testing collapse models.
description: accepted by NATURE Scientific Reports, 12 pages, 1 figures, 2 tables
The imprint of inhomogeneous HeII reionization on the HI and HeII Ly-alpha forest
Creators: name: Compostella, Michele
name: Cantalupo, Sebastiano
name: Porciani, Cristiano
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We use a set of AMR hydrodynamic simulations post-processed with the radiative-transfer code RADAMESH to study how inhomogeneous HeII reionization affects the intergalactic medium (IGM). We propagate radiation from active galactic nuclei (AGNs) considering two scenarios for the time evolution of the ionizing sources. We find that HeII reionization takes place in a very inhomogeneous fashion, through the production of well separated bubbles of the ionized phase that subsequently percolate. Overall, the reionization process is extended in time and lasts for a redshift interval Delta z>1. At fixed gas density, the temperature distribution is bimodal during the early phases of HeII reionization and cannot be described by a simple effective equation of state. When HeII reionization is complete, the IGM is characterized by a polytropic equation of state with index gamma~1.20. This relation is appreciably flatter than at the onset of the reionization process (gamma=1.56) and also presents a much wider dispersion around the mean. We extract HI and HeII Ly-alpha absorption spectra from the simulations and fit Voigt profiles to them. We find that the regions where helium is doubly ionized are characterized by different probability density functions of the curvature and of the Doppler b parameters of the HI Ly-alpha forest as a consequence of the bimodal temperature distribution during the early phases of HeII reionization. The column-density ratio in HeII and HI shows a strong spatial variability. Its probability density function rapidly evolves with time reflecting the increasing volume fraction in which ionizing radiation is harder due to the AGN contribution. Finally we show that the number density of the flux-transmission windows per unit redshift and the mean size of the dark gaps in the HeII spectra have the potential to distinguish between different reionization scenarios. (abridged)
description: 24 pages, 30 figures. Matches version accepted for publication in MNRAS
Decoherence induced by magnetic impurities in quantum Hall system
Creators: name: Kagalovsky, V.
name: Chudnovskiy, A. L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Scattering by magnetic impurities is known to destroy coherence of electron motion in metals and semiconductors. We investigate the decoherence introduced in a single act of electron scattering by a magnetic impurity in a quantum Hall system. To this end we introduce a fictitious nonunitary scattering matrix $\mathcal{S}$ for electrons that reproduces the exactly calculated scattering probabilities. The strength of decoherence is identified by the deviation of eigenvalues of the product $\mathcal{S}\mathcal{S}^{\dagger}$ from unity. Using the fictitious scattering matrix, we estimate the width of the metallic region at the quantum Hall effect inter-plateau transition and its dependence on the exchange coupling strength and the degree of polarization of magnetic impurities.
description: 13 pages, 4 figures
The nature of massive black hole binary candidates: I. Spectral properties and evolution
Creators: name: Decarli, Roberto
name: Dotti, Massimo
name: Fumagalli, Michele
name: Tsalmantza, Paraskevi
name: Montuori, Carmen
name: Lusso, Elisabeta
name: Hogg, David W.
name: Prochaska, Jason X.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Theoretically, bound binaries of massive black holes are expected as the natural outcome of mergers of massive galaxies. From the observational side, however, massive black hole binaries remain elusive. Velocity shifts between narrow and broad emission lines in quasar spectra are considered a promising observational tool to search for spatially unresolved, dynamically bound binaries. In this series of papers we investigate the nature of such candidates through analyses of their spectra, images and multi-wavelength spectral energy distributions. Here we investigate the properties of the optical spectra, including the evolution of the broad line profiles, of all the sources identified in our previous study. We find a diverse phenomenology of broad and narrow line luminosities, widths, shapes, ionization conditions and time variability, which we can broadly ascribe to 4 classes based on the shape of the broad line profiles: 1) Objects with bell-shaped broad lines with big velocity shifts (>1000 km/s) compared to their narrow lines show a variety of broad line widths and luminosities, modest flux variations over a few years, and no significant change in the broad line peak wavelength. 2) Objects with double-peaked broad emission lines tend to show very luminous and broadened lines, and little time variability. 3) Objects with asymmetric broad emission lines show a broad range of broad line luminosities and significant variability of the line profiles. 4) The remaining sources tend to show moderate to low broad line luminosities, and can be ascribed to diverse phenomena. We discuss the implications of our findings in the context of massive black hole binary searches.
description: 13 pages, 9 figures. Accepted for publication in MNRAS
Neutrino physics from future weak lensing surveys
Creators: name: Vanderveld, R. Ali
name: Hu, Wayne
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Given recent indications of additional neutrino species and cosmologically significant neutrino masses, we analyze their signatures in the weak lensing shear power spectrum. We find that a shear deficit in the 20-40% range or excess in the 20-60% range cannot be explained by variations in parameters of the flat LambdaCDM model that are allowed by current observations of the expansion history from Type Ia supernovae, baryon acoustic oscillations, and local measures of the Hubble constant H_0, coupled with observations of the cosmic microwave background from WMAP9 and the SPT 2500 square degree survey. Hence such a shear deficit or excess would indicate large masses or extra species, respectively, and we find this to be independent of the flatness assumption. We also discuss the robustness of these predictions to cosmic acceleration physics and the means by which shear degeneracies in joint variation of mass and species can be broken.
description: 9 pages, 6 figures, submitted to PRD. v2: updated to use the WMAP9 and SPT 2500 square degree data sets, with qualitative results unchanged; references added; minor edits to text
Simulation data set for deep drawing cups of DC04 steel sheets
Creators: name: Morand, Lukas
name: Baiker, Maria
name: Pagenkopf, Jan
name: Butz, Alexander
name: Helm, Dirk
Publisher: name: Fraunhofer-Gesellschaft
Year: 2021
Subjects: subject: DDC::600 Technik, Medizin, angewandte Wissenschaften::670 Industrielle Fertigung::671 Metallverarbeitung und Rohprodukte aus Metall
subject: DDC::500 Naturwissenschaften und Mathematik::530 Physik::531 Klassische Mechanik, Festkörpermechanik

description: This data set contains the results of 9999 finite element simulations of cup drawing processes that are conducted using the commercial software Abaqus/Explicit. For each process simulation, the input parameters (material dependent parameters and process parameters) were varied randomly. The material parameters were chosen based on typical fluctuations in DC04 steel sheets and possible process parameter settings following literature and norms.
Localized defect modes in graphene
Creators: name: Savin, Alexander V.
name: Kivshar, Yuri S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the properties of localized vibrational modes associated with structural defects in a sheet of graphene. For the example of the Stone-Wales defects, one- and two-atom vacancies, many-atom linear vacancies, and adatoms in a honeycomb lattice, we demonstrate that the local defect modes are characterized by stable oscillations with the frequencies lying outside the linear frequency bands of an ideal graphene. In the frequency spectral density of thermal oscillations, such localized defect modes lead to the additional peaks from the right side of the frequency band of the ideal sheet of graphene. Thus, the general structure of the frequency spectral density can provide a fingerprint of its quality and the type of quantity of the structural defect a graphene sheet may contain.
description: 6 pages, 6 figures
Widely tunable single photon source with high purity at telecom wavelength
Creators: name: Jin, Rui-Bo
name: Shimizu, Ryosuke
name: Wakui, Kentaro
name: Benichi, Hugo
name: Sasaki, Masahide
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We theoretically and experimentally investigate the spectral tunability and purity of photon pairs generated from spontaneous parametric down conversion in periodically poled $\mathrm{KTiOPO_4}$ crystal with group-velocity matching condition. The numerical simulation predicts that the purity of joint spectral intensity ($P_{JSI}$) and the purity of joint spectral amplitude ($P_{JSA}$) can be kept higher than 0.98 and 0.81, respectively, when the wavelength is tuned from 1460 nm to 1675 nm, which covers the S-, C-, L-, and U-band in telecommunication wavelengths. We also directly measured the joint spectral intensity at 1565 nm, 1584 nm and 1565 nm, yielding $P_{JSI}$ of 0.989, 0.983 and 0.958, respectively. Such a photon source is useful for quantum information and communication systems.
description: 8 pages, 5 figures
TENSOR UNICO I+D: Determinism in the 6G era
Creators: name: De La Oliva, Antonio
name: PREDICT-6G CONSORTIUM
Publisher: name: Zenodo
Year: 2023
Subjects: 6G
Determinism
R&D

description: Presentation of PREDICT-6G, "Determinism in the 6G era", at TENSOR and UNICO R&D conference.
Science with the Murchison Widefield Array
Creators: name: Bowman, Judd D.
name: Cairns, Iver
name: Kaplan, David L.
name: Murphy, Tara
name: Oberoi, Divya
name: Staveley-Smith, Lister
name: Arcus, Wayne
name: Barnes, David G.
name: Bernardi, Gianni
name: Briggs, Frank H.
name: Brown, Shea
name: Bunton, John D.
name: Burgasser, Adam J.
name: Cappallo, Roger J.
name: Chatterjee, Shami
name: Corey, Brian E.
name: Coster, Anthea
name: Deshpande, Avinash
name: deSouza, Ludi
name: Emrich, David
name: Erickson, Philip
name: Goeke, Robert F.
name: Gaensler, B. M.
name: Greenhill, Lincoln J.
name: Harvey-Smith, Lisa
name: Hazelton, Bryna J.
name: Herne, David
name: Hewitt, Jacqueline N.
name: Johnston-Hollitt, Melanie
name: Kasper, Justin C.
name: Kincaid, Barton B.
name: Koenig, Ronald
name: Kratzenberg, Eric
name: Lonsdale, Colin J.
name: Lynch, Mervyn J.
name: Matthews, Lynn D.
name: McWhirter, S. Russell
name: Mitchell, Daniel A.
name: Morales, Miguel F.
name: Morgan, Edward H.
name: Ord, Stephen M.
name: Pathikulangara, Joseph
name: Thiagaraj, Prabu
name: Remillard, Ronald A.
name: Robishaw, Timothy
name: Rogers, Alan E. E.
name: Roshi, Anish A.
name: Salah, Joseph E.
name: Sault, Robert J.
name: Shankar, N. Udaya
name: Srivani, K. S.
name: Stevens, Jamie B.
name: Subrahmanyan, Ravi
name: Tingay, Steven J.
name: Wayth, Randall B.
name: Waterson, Mark
name: Webster, Rachel L.
name: Whitney, Alan R.
name: Williams, Andrew J.
name: Williams, Christopher L.
name: Wyithe, J. Stuart B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Significant new opportunities for astrophysics and cosmology have been identified at low radio frequencies. The Murchison Widefield Array is the first telescope in the Southern Hemisphere designed specifically to explore the low-frequency astronomical sky between 80 and 300 MHz with arcminute angular resolution and high survey efficiency. The telescope will enable new advances along four key science themes, including searching for redshifted 21 cm emission from the epoch of reionisation in the early Universe; Galactic and extragalactic all-sky southern hemisphere surveys; time-domain astrophysics; and solar, heliospheric, and ionospheric science and space weather. The Murchison Widefield Array is located in Western Australia at the site of the planned Square Kilometre Array (SKA) low-band telescope and is the only low-frequency SKA precursor facility. In this paper, we review the performance properties of the Murchison Widefield Array and describe its primary scientific objectives.
description: Updated with revisions. 32 pages including figures and references. Submitted to PASA
Air pollution forecasting by coupled atmosphere-fire model WRF and SFIRE with WRF-Chem
Creators: name: Kochanski, Adam K.
name: Beezley, Jonathan D.
name: Mandel, Jan
name: Clements, Craig B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Atmospheric pollution regulations have emerged as a dominant obstacle to prescribed burns. Thus, forecasting the pollution caused by wildland fires has acquired high importance. WRF and SFIRE model wildland fire spread in a two-way interaction with the atmosphere. The surface heat flux from the fire causes strong updrafts, which in turn change the winds and affect the fire spread. Fire emissions, estimated from the burning organic matter, are inserted in every time step into WRF-Chem tracers at the lowest atmospheric layer. The buoyancy caused by the fire then naturally simulates plume dynamics, and the chemical transport in WRF-Chem provides a forecast of the pollution spread. We discuss the choice of wood burning models and compatible chemical transport models in WRF-Chem, and demonstrate the results on case studies.
description: Proceedings of 4th Fire Behavior and Fuels Conference, February 18-22, 2013, Raleigh, North Carolina, USA
Observation of modulation instability in a nonlinear magnetoinductive waveguide
Creators: name: Tamayama, Yasuhiro
name: Nakanishi, Toshihiro
name: Kitano, Masao
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report numerical and experimental investigations into modulation instability in a nonlinear magnetoinductive waveguide. By numerical simulation we find that modulation instability occurs in an electrical circuit model of a magnetoinductive waveguide with third-order nonlinearity. We fabricate the nonlinear magnetoinductive waveguide for microwaves using varactor-loaded split-ring resonators and observe the generation of modulation instability in the waveguide. The condition for generating modulation instability in the experiment roughly agrees with that in the numerical analysis.
description: 7 pages, 11 figures
INVESTIGATING THE IMPACT OF COMPUTATIONAL THINKING INTEGRATION ON MATHEMATICAL PROBLEM-SOLVING SKILLS OF SENIOR SECONDARY SCHOOL STUDENTS IN AKURE SOUTH LOCAL GOVERNMENT AREA OF ONDO STATE
Creators: name: OLOJO, OLUDARE JETHRO
name: ABE, THOMAS OLABODE
Publisher: name: Zenodo
Year: 2024
Subjects: Investigating the Impact, Mathematical Problem-Solving Skills, Computational Thinking Integration, Senior Secondary School Students.

description: Abstract

Human beings are all just thinking creatures, whether consciously or unconsciously. This means that mankind will always think. Human beings themselves have had to amass reason and wisdom based on these tools that they depend upon for survival. Thus, the goal of this research is to investigate whether Instruction in mathematical problem-solving methods based on principles of Computational thinking can help raise academic performance among senior secondary school students. In terms of the design, the study used a non-randomization pretest-posttest control group quasi-experiment. This study randomly assigned 105 students each; to experimental and control classes. Therefore, the direction of this research proceeds from quaternary questions and a quaternary hypothesis. Data were collected using a Posttest Mathematics Accomplishment Test (PMAT) designed by the researchers. Statistical Package for Social Science version 23 was used to analyze the data. The study questions were answered descriptively using mean and standard deviation, and the hypotheses were assessed using a student's t-test with an alpha-level coefficient of 0.05. The experiment shows that students in the experimental group performed better after testing; even though the two groups were on the same level before the experiment. However, the scores of male and female students in the experimental group turned out not to be too far apart. On the ability to retain the skills learned longer, the findings revealed that students in the experimental group did better than those in the control group.  Based on this, it was therefore suggested, among others; that basic computational thinking be included in secondary-school education.
Dark matter and collider signatures of the MSSM
Creators: name: Fowlie, Andrew
name: Kowalska, Kamila
name: Roszkowski, Leszek
name: Sessolo, Enrico Maria
name: Tsai, Yue-Lin Sming
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We explore the MSSM with 9 free parameters (p9MSSM) that have been selected as a minimum set that allows an investigation of neutralino dark matter and collider signatures while maintaining consistency with several constraints. These include measurement of the dark matter relic density from PLANCK, main properties of the discovered Higgs boson, LHC direct SUSY searches, recent evidence for a Standard Model-like BR(Bs -> μ+ μ-), and the measurement of δ(g-2), plus a number of other electroweak and flavor physics constraints. We perform a simulation of two LHC direct SUSY searches at sqrt(s)=8 TeV: the CMS inclusive α_T search for squarks and gluinos and the CMS electroweak production search with 3l+E_T^miss in the final state. We use the latter to identify the regions of the parameter space, consistent at 2σ with δ(g-2), that are not excluded by the direct limits from the electroweak production. We find that they correspond to a neutralino mass in the window 200 GeV
description: 43 pages, 16 figures. Discussion of the Higgs sector extended, Fig. 9a (m_stop vs m_h) added. Version published in PRD
A Study of Parallelizing O(N) Green-Function-Based Monte Carlo Method for Many Fermions Coupled with Classical Degrees of Freedom
Creators: name: Zhang, Shixun
name: Yamagiwa, Shinichi
name: Yunoki, Seiji
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Models of fermions interacting with classical degrees of freedom are applied to a large variety of systems in condensed matter physics. For this class of models, Weiße [Phys. Rev. Lett. {\bf 102}, 150604 (2009)] has recently proposed a very efficient numerical method, called O($N$) Green-Function-Based Monte Carlo (GFMC) method, where a kernel polynomial expansion technique is used to avoid the full numerical diagonalization of the fermion Hamiltonian matrix of size $N$, which usually costs O($N^3$) computational complexity. Motivated by this background, in this paper we apply the GFMC method to the double exchange model in three spatial dimensions. We mainly focus on the implementation of GFMC method using both MPI on a CPU-based cluster and Nvidia's Compute Unified Device Architecture (CUDA) programming techniques on a GPU-based (Graphics Processing Unit based) cluster. The time complexity of the algorithm and the parallel implementation details on the clusters are discussed. We also show the performance scaling for increasing Hamiltonian matrix size and increasing number of nodes, respectively. The performance evaluation indicates that for a $32^3$ Hamiltonian a single GPU shows higher performance equivalent to more than 30 CPU cores parallelized using MPI.
description: 15 pages, 7 figures
Landau-Zener Transitions in Chains
Creators: name: Sinitsyn, N. A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We determine transition probabilities in two exactly solvable multistate Landau-Zener (LZ) models and discuss applications of our results to the theory of dynamic passage through a phase transition in the dissipationless quantum mechanical regime. In particular, we show that statistics of particles in a new phase demonstrate scaling behavior. Our results also reveal a symmetry that we claim is a property of a large class of multistate LZ models, whose explicit solutions are not presently known. We support our arguments by direct numerical simulations.
description: 8 pages, 7 figures
Additional file 1 of TACR2 is associated with the immune microenvironment and inhibits migration and proliferation via the Wnt/β-catenin signaling pathway in prostate cancer
Creators: name: Jianfeng, Wang
name: Yutao, Wang
name: Jianbin, Bi
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1: Table S1. The clinicopathological data of 30 patients with prostate cancer.
Berry phases, current lattices, and suppression of phase transitions in a lattice gauge theory of quantum antiferromagnets
Creators: name: Bojesen, Troels Arnfred
name: Sudbø, Asle
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider a lattice model of two complex scalar matter fields $z_{a}, a=1,2$ under a CP1 constraint $\abs{z_1}^2+\abs{z_2}^2=1$, minimally coupled to a compact gauge field, with an additional Berry phase term. This model has been the point of origin for a large body of works addressing novel paradigms for quantum criticality, in particular spin-quark (spinon) deconfinement in S=1/2 quantum antiferromagnets. We map the model exactly to a link-current model, which permits the use of classical worm algorithms to study the model in large-scale Monte Carlo simulations on lattices of size L^3, up to L=360. We show that the addition of a Berry phase term to the lattice $\CP$-model suppresses the phase transition in the $\groupO{3}$ universality class of the $\CP$-model. The link-current formulation of the model is useful in identifying the mechanism by which the phase transition is suppressed.
description: 12 pages, 9 figures. Published in Physical Review B
Cryptodex - ResearchPaper.docx
Creators: name: S S, Vidhyadharan
Publisher: name: figshare
Year: 2023
Subjects: Financial accounting

description: Cryptocurrencies have gained widespread acceptance in recent years as a secure, decentralized form of digital currency. Crypto exchanges have become a popular way to trade cryptocurrencies, but centralized exchanges have faced several security and trust issues. Decentralized exchanges (DEXs) have emerged as a viable alternative, offering increased security, transparency, and user control. This research paper aims to analyze the development and growth of DEXs, and propose a crypto swap - DEX exchange system project to provide a more efficient and user-friendly DEX platform.
Symmetry breaking in a bulk-surface reaction-diffusion model for signaling networks
Creators: name: Rätz, Andreas
name: Röger, Matthias
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 92C37, 35K57, 35Q92

description: Signaling molecules play an important role for many cellular functions. We investigate here a general system of two membrane reaction-diffusion equations coupled to a diffusion equation inside the cell by a Robin-type boundary condition and a flux term in the membrane equations. A specific model of this form was recently proposed by the authors for the GTPase cycle in cells. We investigate here a putative role of diffusive instabilities in cell polarization. By a linearized stability analysis we identify two different mechanisms. The first resembles a classical Turing instability for the membrane subsystem and requires (unrealistically) large differences in the lateral diffusion of activator and substrate. The second possibility on the other hand is induced by the difference in cytosolic and lateral diffusion and appears much more realistic. We complement our theoretical analysis by numerical simulations that confirm the new stability mechanism and allow to investigate the evolution beyond the regime where the linearization applies.
description: 21 pages, 6 figures
Additional file 1 of Prevalence of bacterial uropathogens and their antimicrobial susceptibility patterns among pregnant women in Eastern Ethiopia: hospital-based cross-sectional study
Creators: name: Ejerssa, Alemseged Workneh
name: Gadisa, Diriba Alemayehu
name: Orjino, Teferra Abula
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. Semi-structured questionnaire.
Acausality of Massive Gravity
Creators: name: Deser, S.
name: Waldron, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We show, by analyzing its characteristics, that the ghost-free, 5 degree of freedom, Wess--Zumino massive gravity model admits superluminal shock wave solutions and thus is acausal. Ironically, this pathology arises from the very constraint that removes the (sixth) Boulware-Deser ghost mode.
description: 4 pages, LaTeX, references added, PRL version
WEAI Women's Empowerment Agriculture Index - Instruction for the enumerators
Creators: name: Colosio Valerio
Publisher: name: Zenodo
Year: 2023
Subjects: WEAI
Women
Empowerment
Agriculture
Survey

description: The Women’s Empowerment in Agriculture Index (WEAI) is a survey-based tool codeveloped by the International Food Policy Research Institute (IFPRI), the Oxford Poverty and Human Development Initiative (OPHI), and the U.S. Agency for International Development (USAID) that directly measure women’s empowerment and inclusion in the agricultural sector through a standardized procedure. The WEAI builds on research to develop indicators of agency and empowerment that propose domain-specific measures of empowerment obtained using questions that can be fielded in individual or household surveys. The purpose of this manual is to provide enumerators a tool to facilitate their understanding of the methodology and its implementation in the interview phase.
description: other funding acknowledgements: AICS AID 012590/01/1, "Nourrir la ville" project
Additional file 2 of Prevalence of bacterial uropathogens and their antimicrobial susceptibility patterns among pregnant women in Eastern Ethiopia: hospital-based cross-sectional study
Creators: name: Ejerssa, Alemseged Workneh
name: Gadisa, Diriba Alemayehu
name: Orjino, Teferra Abula
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 2. Antimicrobial susceptibility test interpretation.
Reanalysis of the Gravitational Microlensing Event MACHO-97-BLG-41 based on Combined Data
Creators: name: Jung, Youn Kil
name: Han, Cheongho
name: Gould, Andrew
name: Maoz, Dan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: MACHO-97-BLG-41 is a gravitational microlensing event produced by a lens composed of multiple masses detected by the first-generation lensing experiment. For the event, there exist two different interpretations of the lens from independent analyses based on two different data sets: one interpreted the event as produced by a circumbinary planetary system while the other explained the light curve with only a binary system by introducing orbital motion of the lens. According to the former interpretation, the lens would be not only the first planet detected via microlensing but also the first circumbinary planet ever detected. To resolve the issue using state-of-the-art analysis methods, we reanalyze the event based on the combined data used separately by the previous analyses. By considering various higher-order effects, we find that the orbiting binary-lens model provides a better fit than the circumbinary planet model with Δχ^2 ~166. The result signifies the importance of even and dense coverage of lensing light curves in the interpretation of events.
description: 5 pages, 2 figures, 2 tables (ApJ submitted)
Additional file 1 of An eReferral Management & Triage System for minor Oral surgery referrals from primary care dentists: a cost-effectiveness evaluation
Creators: name: Hill, Harry
name: Birch, Stephen
name: Tickle, Martin
name: Petty, Iain
name: Goldthorpe, Joanna
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1.
title: Applying Apriori Rules Mining in Evaluating Digital Government Services Patronization by a Younger Generation of Users in Russia
Creators: name:  Agbozo, Ebenezer
Publisher: name: TEM Journal
Year: 2019

description: The Russian Federation has been on a gradual course of improving digital public service delivery using its Gosuslugi platform. Research into the patronization of services has not been explored. In order to assess services patronized by a younger generation of Russians, survey data from students in the Sverdlovsk region is analysed using standard statistical techniques and apriori algorithms and association rules mining technique to generate association rules. The results of the study are discussed as well as theoretical contributions of the study in the light of the research findings.
Direct evidence for a Coulombic phase in monopole-suppressed SU(2) lattice gauge theory
Creators: name: Grady, Michael
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Further evidence is presented for the existence of a non-confining phase at weak coupling in SU(2) lattice gauge theory. Using Monte Carlo simulations with the standard Wilson action, gauge-invariant SO(3)-Z2 monopoles, which are strong-coupling lattice artifacts, have been seen to undergo a percolation transition exactly at the phase transition previously seen using Coulomb-gauge methods, with an infinite lattice critical point near $β= 3.2$. The theory with both Z2 vortices and monopoles and SO(3)-Z2 monopoles eliminated is simulated in the strong coupling ($β= 0$) limit on lattices up to $60^4$. Here, as in the high-$β$ phase of the Wilson action theory, finite size scaling shows it spontaneously breaks the remnant symmetry left over after Coulomb gauge fixing. Such a symmetry breaking precludes the potential from having a linear term. The monopole restriction appears to prevent the transition to a confining phase at any $β$. Direct measurement of the instantaneous Coulomb potential shows a Coulombic form with moderately running coupling possibly approaching an infrared fixed point of $α\sim 1.4$. The Coulomb potential is measured to 50 lattice spacings and 2 fm. A short-distance fit to the 2-loop perturbative potential is used to set the scale. High precision at such long distances is made possible through the use of open boundary conditions, which was previously found to cut random and systematic errors of the Coulomb gauge fixing procedure dramatically. The Coulomb potential agrees with the gauge-invariant interquark potential measured with smeared Wilson loops on periodic lattices as far as the latter can be practically measured with similar statistics data.
description: 21 Pages, 8 Figures, LaTex. V2 minor formatting changes, to appear in Nuclear Physics B