cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Intercluster Correlation in Seismicity
Creators: name: Helmstetter, Agnes
name: Sornette, Didier
Publisher: name: arXiv
Year: 2003
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Mega et al.(cond-mat/0212529) proposed to use the ``diffusion entropy'' (DE) method to demonstrate that the distribution of time intervals between a large earthquake (the mainshock of a given seismic sequence) and the next one does not obey Poisson statistics. We have performed synthetic tests which show that the DE is unable to detect correlations between clusters, thus negating the claimed possibility of detecting an intercluster correlation. We also show that the LR model, proposed by Mega et al. to reproduce inter-cluster correlation, is insufficient to account for the correlation observed in the data.
description: Comment on Mega et al., Phys. Rev. Lett. 90. 188501 (2003) (cond-mat/0212529)
UBC Indian Female Undergraduate Students : Cultural, Gender, and Student-related Barriers to Physical Activity
Creators: name: Qureshi, Eshah
name: Meng, Charles
name: Wong, Amadis
name: Gao, George
name: Dixit, Ishan
Publisher: name: The University of British Columbia
Year: 2020

description: In partnership with the Social Ecological Economic Developments Studies (SEEDS) at the University of British Columbia (UBC), UBC Indian Female Undergraduate Students: Cultural, Gender, and Student-related Barriers to Physical Activity aims to identify barriers to physical activity (PA) for female Indian undergraduate students. Our study utilized a survey to evaluate our population’s concerns, attitudes, usage, demographic, and understanding regarding PA. The survey was conducted for four weeks and was held in various locations around the UBC campus such as the UBC Nest, Irving K. Barber Library, and Buchanan Building. The survey was also accessible online. The data was collected from 44 participants. Through the use of thematic analysis and descriptive statistics, we identified barriers affecting the PA rates and perceptions of our demographic. We found that western culture had a profound impact on the participants’ perceptions of PA which included feelings of excitement and importance towards PA. Furthermore, structural barriers such as lack of time and large school workloads were observed to reduce PA access. Other barriers such as cultural barriers and gender-related barriers further diminished engagement in PA behaviours via lack of familial support. Recommendations to increase PA in our target demographics were made in regards to mental health, incentives, and program changes. Specifically, we suggested that the promotion of PA for psychological and physiological health benefits be performed more aggressively, in addition to the creation of incentives that make PA more affordable for students at UBC. Further research should look into a longitudinal design that takes into account a sedentary lifestyle. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Intimate partner violence and help-seeking: The role of femicide news
Creators: name: Colagrossi, Marco
name: Deiana, Claudio
name: Dragone, Davide
name: Geraci, Andrea
name: Giua, Ludovica
name: Iori, Elisa
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2022
Subjects: SECS-P/02 Politica economica

description: Exploiting high-frequency data from the Italian anti-violence helpline and a unique geolocalized dataset on killings of women, we show that the news coverage of a femicide triggers an increase in calls to the helpline. The effect is detectable in the week following the news and in the province where the femicide has occurred. These findings are consistent with a model in which the news of a femicide increase expectations about future intimate partner violence in case no call is made.
Molecular Dynamics Simulation of Amyloid Beta Dimer Formation
Creators: name: Urbanc, B.
name: Cruz, L.
name: Ding, F.
name: Sammond, D.
name: Khare, S.
name: Buldyrev, S. V.
name: Stanley, H. E.
name: Dokholyan, N. V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Recent experiments with amyloid-beta (Abeta) peptide suggest that formation of toxic oligomers may be an important contribution to the onset of Alzheimer's disease. The toxicity of Abeta oligomers depends on their structure, which is governed by assembly dynamics. Due to limitations of current experimental techniques, a detailed knowledge of oligomer structure at the atomic level is missing. We introduce a molecular dynamics approach to study Abeta dimer formation: (1) we use discrete molecular dynamics simulations of a coarse-grained model to identify a variety of dimer conformations, and (2) we employ all-atom molecular mechanics simulations to estimate the thermodynamic stability of all dimer conformations. Our simulations of a coarse-grained Abeta peptide model predicts ten different planar beta-strand dimer conformations. We then estimate the free energies of all dimer conformations in all-atom molecular mechanics simulations with explicit water. We compare the free energies of Abeta(1-42) and Abeta(1-40) dimers. We find that (a) all dimer conformations have higher free energies compared to their corresponding monomeric states, and (b) the free energy difference between the Abeta(1-42) and the analogous Abeta(1-40) dimer conformation is not significant. Our results suggest that Abeta oligomerization is not accompanied by the formation of stable planar beta-strand Abeta dimers.
description: 32 pages (preprint format), 3 figures
Total Cost of Ownership for Modular Chemical Process Intensified (MCPI) Plants - Interview Guide 2.3 - MCPI Plant CAPEX and OPEX data (Supplementary Material)
Creators: name: Shankar Raman, Arvind
name: Alhamouri, Khaled
name: Haapala, Karl
name: O'Connor, James
name: Paul, Brian
Publisher: name: figshare
Year: 2022
Subjects: subject: 91099 Manufacturing Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 90502 Construction Engineering
subject: FOS: Civil engineering
subject: 90499 Chemical Engineering not elsewhere classified
subject: FOS: Chemical engineering

description: This document contains supplementary material for the journal article to be published, titled "Economic analysis of distributed commodity production using modular chemical process intensification and conventional stick-built approaches"
Coherent states superpositions in cavity quantum electrodynamics with trapped ions
Creators: name: Semiao, F. L.
name: Vidiella-Barranco, A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We investigate how superpositions of motional coherent states naturally arise in the dynamics of a two-level trapped ion coupled to the quantized field inside a cavity. We extend our considerations including a more realistic set up where the cavity is not ideal and photons may leak through its mirrors. We found that a detection of a photon outside the cavity would leave the ion in a pure state. The statistics of the ionic state still keeps some interference effects that might be observed in the weak coupling regime.
description: Figure and typos corrected
A Sub-Millimeter Search of Nearby Young Stars for Cold Dust: Discovery of Debris Disks around Two Low-Mass Stars
Creators: name: Liu, Michael C.
name: Matthews, Brenda C.
name: Williams, Jonathan P.
name: Kalas, Paul G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) We present results from a JCMT/SCUBA 850 um search for cold dust around nearby young stars belonging to the beta Pic (t~12 Myr) and the Local Association (t~50 Myr) moving groups. Unlike most past sub-mm studies, our sample was chosen on the basis of stellar age. Our observations achieve about an order of magnitude greater sensitivity in dust mass compared to previous work in this age range. We detected two of the three M dwarfs in our sample at 850 um, GJ 182 and GJ 803. GJ 182 may also possess a 25 um excess, indicative of warm dust in the inner few AU of its disk. For GJ 803 (AU Mic), sub-mm mapping finds that the 850 um emission is unresolved. A non-detection of the CO 3-2 line indicates the system is gas-poor, and the SED suggests the presence of a large inner disk hole (~17 AU = 1.7 arcsec in radius). These are possible indications that planets at large separations can form around M dwarfs within \~10 Myr. In a companion paper (Kalas, Liu & Matthews 2004), we confirm the existence of a dust disk around GJ 803 using optical coronagraphic imaging. Given its youthfulness, proximity, and detectability, the GJ 803 disk will be a valuable system for studying disk, and perhaps planet, formation in great detail. Overall, sub-mm measurements of debris disks point to a drop in dust mass by a factor of about 10^3 within the first ~10 Myr, with the subsequent decline in the masses of sub-mm detected disks consistent with t^{-0.5} to t^{-1}.
description: 9 pages, ApJ, in press. Minor changes made to reflect final published manuscript
Double Rosensweig instability in a ferrofluid sandwich structure
Creators: name: Rannacher, Dirk
name: Engel, Andreas
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We consider a horizontal ferrofluid layer sandwiched between two layers of immiscible non-magnetic fluids. In a sufficiently strong vertical magnetic field the flat interfaces between magnetic and non-magnetic fluids become unstable to the formation of peaks. We theoretically investigate the interplay between these two instabilities for different combinations of the parameters of the fluids and analyze the evolving interfacial patterns. We also estimate the critical magnetic field strength at which thin layers disintegrate into an ordered array of individual drops.
Total Cost of Ownership for Modular Chemical Process Intensified (MCPI) Plants - Interview Guide 2.1 - MCPI Plant (Supplementary Material)
Creators: name: Shankar Raman, Arvind
name: Alhamouri, Khaled
name: Haapala, Karl
name: O'Connor, James
name: Paul, Brian
Publisher: name: figshare
Year: 2022
Subjects: subject: 90499 Chemical Engineering not elsewhere classified
subject: FOS: Chemical engineering
subject: 90502 Construction Engineering
subject: FOS: Civil engineering
subject: 91099 Manufacturing Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This document contains supplementary material for the journal article to be published, titled "Economic analysis of distributed commodity production using modular chemical process intensification and conventional stick-built approaches"
A unifying framework for mean-field theories of asymmetric kinetic Ising systems
Creators: name: Aguilera, Miguel
name: Moosavi, S. Amin
name: Shimazaki, Hideaki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Biological Physics (physics.bio-ph)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Kinetic Ising models are powerful tools for studying the non-equilibrium dynamics of complex systems. As their behavior is not tractable for large networks, many mean-field methods have been proposed for their analysis, each based on unique assumptions about the system's temporal evolution. This disparity of approaches makes it challenging to systematically advance mean-field methods beyond previous contributions. Here, we propose a unifying framework for mean-field theories of asymmetric kinetic Ising systems from an information geometry perspective. The framework is built on Plefka expansions of a system around a simplified model obtained by an orthogonal projection to a sub-manifold of tractable probability distributions. This view not only unifies previous methods but also allows us to develop novel methods that, in contrast with traditional approaches, preserve the system's correlations. We show that these new methods can outperform previous ones in predicting and assessing network properties near maximally fluctuating regimes.
Rapid Prediction of Earthquake Ground Shaking Intensity Using Raw Waveform Data and a Convolutional Neural Network
Creators: name: Jozinović, Dario
name: Lomax, Anthony
name: Štajduhar, Ivan
name: Michelini, Alberto
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: This study describes a deep convolutional neural network (CNN) based technique for the prediction of intensity measurements (IMs) of ground shaking. The input data to the CNN model consists of multistation 3C broadband and accelerometric waveforms recorded during the 2016 Central Italy earthquake sequence for M $\ge$ 3.0. We find that the CNN is capable of predicting accurately the IMs at stations far from the epicenter and that have not yet recorded the maximum ground shaking when using a 10 s window starting at the earthquake origin time. The CNN IM predictions do not require previous knowledge of the earthquake source (location and magnitude). Comparison between the CNN model predictions and the predictions obtained with Bindi et al. (2011) GMPE (which require location and magnitude) has shown that the CNN model features similar error variance but smaller bias. Although the technique is not strictly designed for earthquake early warning, we found that it can provide useful estimates of ground motions within 15-20 sec after earthquake origin time depending on various setup elements (e.g., times for data transmission, computation, latencies). The technique has been tested on raw data without any initial data pre-selection in order to closely replicate real-time data streaming. When noise examples were included with the earthquake data, the CNN was found to be stable predicting accurately the ground shaking intensity corresponding to the noise amplitude.
description: 29 pages, 9 figures
The Cosmic Microwave Background and Inflation Parameters
Creators: name: Bond, J. R.
name: Contaldi, C. R.
name: Lewis, A. M.
name: Pogosyan, D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We review the currrent cosmic parameter determinations of relevance to inflation using the WMAP-1year, Boomerang, CBI, Acbar and other CMB data. The basic steps in the pipelines which determine the bandpowers from the raw data from which these estimations are made are summarized. We forecast how the precision is likely to improve with more years of WMAP in combination with future ground-based experiments and with Planck. We address whether the current data indicates strong breaking from uniform acceleration through the relatively small region of the inflaton potential that the CMB probes, manifest in the much-discussed running spectral index or in even more radical braking/breaking scenarios. Although some weak ``anomalies'' appear in the current data, the statistical case is not there. However increased precision, at the high multipole end and with polarization measurements, will significantly curtail current freedom.
description: 24 pages, 10 figures, 2 tables, Int. J. Theor. Phys. 2004, ed. E. Verdaguer, "Peyresq Physics 8", "The Early Universe: Confronting theory with observations" (June 21-27, 2003)
QCD phase structure from functional methods
Creators: name: Gao, Fei
name: Pawlowski, Jan M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We discuss the QCD phase structure at finite temperature and chemical potential for $2$-flavour and $2+1$-flavour QCD. The results are achieved by computing QCD correlation functions within a generalised functional approach that combines Dyson-Schwinger equations (DSE) and the functional renormalisation group (fRG). In this setup fRG precision data from arXiv:1706.06326 for the vacuum quark-gluon vertex and gluon propagator of $2$-flavour QCD are used as input, and the respective DSEs are expanded about this input. While the vacuum results for other correlation functions serve as a self-consistency check for functional approaches, the results at finite temperature and density are computed, for the first time, without the need of phenomenological infrared parameters.
description: 17 pages, 17 figures
Total Cost of Ownership for Modular Chemical Process Intensified (MCPI) Plants - Interview Guide 1 - Background Info (Supplementary Material)
Creators: name: Shankar Raman, Arvind
name: Alhamouri, Khaled
name: Haapala, Karl
name: Paul, Brian
name: O'Connor, James
Publisher: name: figshare
Year: 2022
Subjects: subject: 90403 Chemical Engineering Design
subject: FOS: Chemical engineering
subject: 90502 Construction Engineering
subject: FOS: Civil engineering
subject: 91006 Manufacturing Processes and Technologies (excl. Textiles)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This document contains supplementary material for the journal article to be published, titled "Economic analysis of distributed commodity production using modular chemical process intensification and conventional stick-built approaches"
Land Ownership and Irrigation on American Indian Reservations
Creators: name: Ge, Muyang
name: Edwards, Eric C.
name: Akhundjanov, Sherzod
name: Ge, Muyang
name: Edwards, Eric C.
name: Akhundjanov, Sherzod
Publisher: name: Unknown
Year: 2018
Subjects: subject: Environmental Economics and Policy
subject: regression discontinuity
subject: Indian reservation
subject: property rights,
subject: agriculture
subject: irrigation

description: American Indian reservations are often characterized by low income and high rates of poverty relative to adjacent non-reservation land. To understand the role institutions governing land ownership play in these outcomes, we examine agricultural land use and irrigation on parcels on and adjacent to the Uintah-Ouray Indian Reservation in eastern Utah. Land within the reservation is held in trust by the federal government and has significant restrictions on its use and development. We predict that this land will see lower investment in irrigation and therefore lower agricultural productivity. We use the exogenous allocation boundaries of a 1905 land allotment as a natural experiment, employing both a sharp and a fuzzy regression discontinuity (RD) design to explore how land ownership has affected agricultural land use, irrigation levels, and irrigation investment. Our results suggest that the original allocations provided land of similar quality across the border. Despite this, tribal lands are around 18 percentage points less likely to be irrigated today, and conditional on being irrigated, tribal land has a 31 percentage point lower rate of capital-intensive sprinkler irrigation. Tribal land is also less likely to grow high-value crops. These results suggest that trust ownership creates significant barriers to the acquisition of capital for agricultural investment, and helps explain lagging agricultural development on reservations.
Additional file 1 of Why do patients take part in research? An overview of systematic reviews of psychosocial barriers and facilitators
Creators: name: Sheridan, Rebecca
name: Martin-Kerry, Jacqueline
name: Hudson, Joanna
name: Adwoa Parker
name: Bower, Peter
name: Knapp, Peter
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 1. MEDLINE search strategy.
Unbiased Global Optimization of Lennard-Jones Clusters for N <= 201 by Conformational Space Annealing Method
Creators: name: Lee, Julian
name: Lee, In-Ho
name: Lee, Jooyoung
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We apply the conformational space annealing (CSA) method to the Lennard-Jones clusters and find all known lowest energy configurations up to 201 atoms, without using extra information of the problem such as the structures of the known global energy minima. In addition, the robustness of the algorithm with respect to the randomness of initial conditions of the problem is demonstrated by ten successful independent runs up to 183 atoms. Our results indicate that the CSA method is a general and yet efficient global optimization algorithm applicable to many systems.
description: revtex, 4 pages, 2 figures. Physical Review Letters, in press
Reduction of multisymplectic manifolds
Creators: name: Blacker, Casey
Publisher: name: arXiv
Year: 2020
Subjects: subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 53D20 (Primary) 53D05, 70S05, 70S10 (Secondary)

description: We extend the Marsden-Weinstein-Meyer symplectic reduction theorem to the setting of multisymplectic manifolds. In this context, we investigate the dependence of the reduced space on the reduction parameters. With respect to a distinguished class of multisymplectic moment maps, an exact stationary phase approximation and nonabelian localization theorem are also obtained.
description: 31 pages
Laticauda Laurenti 1768
Creators: name: Rasmussen, Arne Redsted
name: Sanders, Kate Laura
name: Guinea, Michael L.
name: Amey, Andrew P.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Elapidae
Laticauda

description: Laticauda Laurenti, 1768.
 The countries around Australia have at least six Laticauda species (Cogger & Heatwole, 2006; Heatwole et al., 2005). In the literature two species are reported from Australian waters: L. colubrina and L. laticaudata (Cogger, 1975; Minton, 1975; M. A. Smith, 1926). At least 3 specimens of L. colubrina are deposited in the Australian Museum, Sydney: AMS R20883 from Sydney, R 2954 from Wollongong, and R11524 from Victorian N. Hill and one from Museum Victoria, Melbourne: D 4276 from Sydney. Three of the localities are in New South Wales and indicate the specimens are waifs, one is from inland western Victoria (the desert town Northern Hill) indicating a wrong locality. At least three Australian specimens of L. laticaudata are deposited in museum collections, one in BMNH:55.10.16.439 from Tasmania, one in ZMUC: 66265 from Sydney and one in Museum Victoria, Melbourne 60287 from Torres Strait also indicating waif specimens. We have found no further specimens reported from Australia indicating that Laticauda is not breeding in Australian waters despite there being breeding populations from surrounding countries (Bonnet, Brischoux, Pearson, & Rivalan, 2009; Brischoux & Bonnet, 2009). McCarthy (1986) suggests that competition from the Aipysurus species might, at least in part, be responsible for the rarity of Laticauda in Australian waters. Greer (1997) suggests that it may be due to the absence of coastal limestone rocks in northern Australia which is the preferred sheltering and egg-laying sites for these species. Further investigation in the northern part of coastal Australia is much needed before we can include Laticauda in the checklist; however, we include Laticauda sp. in the possible list.
description: Published as part of Rasmussen, Arne Redsted, Sanders, Kate Laura, Guinea, Michael L. & Amey, Andrew P., 2014, Sea snakes in Australian waters (Serpentes: subfamilies Hydrophiinae and Laticaudinae) - a review with an updated identification key, pp. 351-371 in Zootaxa 3869 (4) on page 356, DOI: 10.11646/zootaxa.3869.4.1, http://zenodo.org/record/4947280
Additional file 2 of Retrospective data analyses of social and environmental determinants of malaria control for elimination prospects in Eritrea
Creators: name: Mihreteab, Selam
name: Jailos Lubinda
name: Bingxin Zhao
name: Rodriguez-Morales, Alfonso J.
name: Ajlina Karamehic-Muratovic
name: Goitom, Aman
name: Shad, Muhammad Yousaf
name: Ubydul Haque
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Cancer
subject: Statistics
subject: FOS: Mathematics
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 2: Text S1. Additional methods and climatic parameters by geographical region.
Additional file 1 of Retrospective data analyses of social and environmental determinants of malaria control for elimination prospects in Eritrea
Creators: name: Mihreteab, Selam
name: Jailos Lubinda
name: Bingxin Zhao
name: Rodriguez-Morales, Alfonso J.
name: Ajlina Karamehic-Muratovic
name: Goitom, Aman
name: Shad, Muhammad Yousaf
name: Ubydul Haque
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Cancer
subject: Statistics
subject: FOS: Mathematics
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1: Table S1. Milestones of malaria control programme in Eritrea.
Robust Inference for Partially Observed Functional Response Data
Creators: name: Park, Yeonjoo
name: Chen, Xiaohui
name: Simpson, Douglas G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Irregular functional data in which densely sampled curves are observed over different ranges pose a challenge for modeling and inference, and sensitivity to outlier curves is a concern in applications. Motivated by applications in quantitative ultrasound signal analysis, this paper investigates a class of robust M-estimators for partially observed functional data including functional location and quantile estimators. Consistency of the estimators is established under general conditions on the partial observation process. Under smoothness conditions on the class of M-estimators, asymptotic Gaussian process approximations are established and used for large sample inference. The large sample approximations justify a bootstrap approximation for robust inferences about the functional response process. The performance is demonstrated in simulations and in the analysis of irregular functional data from quantitative ultrasound analysis.
description: 52 pages, 8 figures, Statistica Sinica (2021), Published online
BeppoSAX Observations of Centaurus A: the Hard Continuum and the Iron Line Feature
Creators: name: Grandi, P.
name: Fiocchi, M.
name: Perola, C. G.
name: Urry, C. M.
name: Maraschi, L.
name: Massaro, E.
name: Matt, G.
name: Preite-Martinez, A.
name: Steinle, H.
name: Collmar, W.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The radio galaxy Centaurus A was observed by the BeppoSAX satellite five times from 1997 to 2000. From July 6 1999 to August 17 1999, the source was also simultaneously pointed by COMPTEL on-board of the satellite CGRO. Centaurus A has a complex spectrum with multiple extended components and a strongly absorbed (N_H\sim 10^{23}$ cm${-2}) nucleus well fitted by a power law (Γ\sim 1.8) which bends at high energies. When the BeppoSAX and COMPTEL observations are combined together, an exponential cutoff with e-folding energy \sim 1000 keV gives an adequate description of the spectral steepening. A complex feature in emission at 6-7 keV is resolved into two Fe components, one narrow cold line and an ionized line centred at 6.8 keV. Significant variations have been observed in the iron feature, with the less prominent ionized line seemingly being the only one responsible for them: its variations do not appear to correlate with the strength of the continuum. The high energy cutoff and the Fe feature suggest the presence of an accretion flow in the Centaurus A nucleus. However the absence of a significant reflection, the narrowness of the cold line as well as the lack of correlation between the continuum and 6.8 keV line variations disfavour a standard cold/ionized thin disk (at least in the inner regions). A more plausible configuration might be a hot thick optically thin accretion flow surrounded by material with different opacities. Finally, we note that high energy break observed by BeppoSAX and COMPTEL could be also reasonably explained by Inverse Compton radiation from a jet. If this is the case, a structured jet with outer slow layers surrounding a beamed inner region is necessary to explain the strong Fe feature observed by BeppoSAX.
description: 21 pages, 8 figures, accepted for publication in ApJ
Influence of 14N hyperfine interaction on electron nuclear double resonance of boron vacancy in hexagonal boron nitride
Creators: name: Mamin, G. V.
name: Dmitrieva, E. V.
name: Murzakhanov, F. F.
name: Gracheva, I. N.
name: Soltamov, V. A.
name: Gafurov, M. R.
Publisher: name: arXiv
Year: 2025
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The research focuses on the explanation of a phenomenon observed in the spectra of electron nuclear resonance (ENDOR) pertaining to nitrogen atoms adjacent to the boron vacancy (VB) defect in hexagonal boron nitride (hBN). The phenomenon is manifested as a shift of the ENDOR spectrum lines with respect to the nitrogen Larmor frequency. It is hypothesized that these shifts are indicative of a substantial hyperfine interaction between the VB defect and the 14N nuclei in hBN. A calculation utilizing second-order perturbation theory was executed to determine the positions of the ENDOR spectrum lines, resulting in the formulation of correction equations. The values obtained from the perturbation theory corrections align well with the experimental results. The extent of nuclear state admixture into electron states was found to be around 0.04-0.07%.
Laser-Induced Transient Magnons in Sr3Ir2O7 Throughout the Brillouin Zone
Creators: name: Mazzone, D. G.
name: Meyers, D.
name: Cao, Y.
name: Vale, J. G.
name: Dashwood, C. D.
name: Shi, Y.
name: James, A. J. A.
name: Robinson, N. J.
name: Lin, J. Q.
name: Thampy, V.
name: Tanaka, Y.
name: Johnson, A. S.
name: Miao, H.
name: Wang, R.
name: Assefa, T. A.
name: Kim, J.
name: Casa, D.
name: Mankowsky, R.
name: Zhu, D.
name: Alonso-Mori, R.
name: Song, S.
name: Yavas, H.
name: Katayama, T.
name: Yabashi, M.
name: Owada, Y. Kubota S.
name: Liu, J.
name: Yang, J.
name: Konik, R. M.
name: Robinson, I. K.
name: Hill, J. P.
name: McMorrow, D. F.
name: Forst, M.
name: Wall, S.
name: Liu, X.
name: Dean, M. P. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Although ultrafast manipulation of magnetism holds great promise for new physical phenomena and applications, targeting specific states is held back by our limited understanding of how magnetic correlations evolve on ultrafast timescales. Using ultrafast resonant inelastic x-ray scattering we demonstrate that femtosecond laser pulses can excite transient magnons at large wavevectors in gapped antiferromagnets, and that they persist for several picoseconds which is opposite to what is observed in nearly gapless magnets. Our work suggests that materials with isotropic magnetic interactions are preferred to achieve rapid manipulation of magnetism.
description: 6 pages, 4 figures, not including supplemental material; accepted in PNAS
Emergent criticality and universality class of the finite temperature charge density wave transition in lattice Bose gases within optical cavities
Creators: name: He, Liang
name: Yi, Su
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We investigate the finite temperature charge density wave (CDW) transition of lattice Bose gases within optical cavities in the deep Mott-insulator limit. We find a new critical regime emerges at a temperature around one-half of the on-site interaction energy, where the first order CDW transition at low temperatures terminates at a critical point and changes to a second order one. By directly calculating the critical exponents and constructing the effective theory in the corresponding critical regime, we find the emergent criticality belongs to the five-dimensional Ising universality class. Direct experimental observation of the emergent criticality can be readily performed by current experimental set-ups operated in the temperature regime around half the on-site interaction energy.
description: 7 pages, 3 figures
Strong and Tunable Electrical-Anisotropy in Type-II Weyl Semimetal Candidate WP2 with Broken Inversion Symmetry
Creators: name: Su, Bo
name: Song, Yanpeng
name: Hou, Yanhui
name: Chen, Xu
name: Zhao, Jianzhou
name: Ma, Yongchang
name: Yang, Yang
name: Guo, Jiangang
name: Luo, Jianlin
name: Chen, Zhi-Guo
Publisher: name: arXiv
Year: 2025
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A transition metal diphosphide WP2 is a candidate for type-II Weyl semimetals (WSMs) in which spatial inversion symmetry is broken and Lorentz invariance is violated. As one of the key prerequisites for the presence of the WSM state in WP2, spatial inversion symmetry breaking in this compound has rarely been investigated by experiments. Furthermore, how much anisotropy the electrical properties of WP2 have and whether its electrical anisotropy can be tuned remain elusive. Here, we report angle-resolved polarized Raman spectroscopy, electrical transport, optical spectroscopy and first-principle studies of WP2. The energies of the observed Raman-active phonons and the angle dependences of the phonon intensities are well consistent with the results obtained by first-principle calculations and the analysis of the proposed crystal symmetry without spatial inversion, providing evidence that spatial inversion symmetry is broken in WP2. Moreover, the measured ratio (Rc/Ra) between the crystalline c-axis and a-axis electrical resistivities exhibits a weak dependence on temperature from 100 to 250 K, but increases abruptly below 100 K, and then reaches the value of 8.0 at 10 K, which is by far the strongest in-plane electrical resistivity anisotropy among the reported type-II WSM candidates with comparable carrier concentrations. Our optical-spectroscopy and calculation studies reveal that the abrupt enhancement of the Rc/Ra below 100 K mainly arises from a sharp increase in the scattering rate anisotropy at low temperatures. More interestingly, the Rc/Ra at 10 K can be tuned from 8.0 to 10.6 as the magnetic field increases from 0 to 9 T. The stronge and tunable electrical resistivity anisotropy found in WP2 can serve as a degree of freedom for tuning the electrical properties of type-II WSMs, which paves the way for developing novel electronic applications based on type-II WSMs.
description: Published in Advanced Materials
Additional file 5 of Strategies to reach and motivate migrant communities at high risk for TB to participate in a latent tuberculosis infection screening program: a community-engaged, mixed methods study among Eritreans
Creators: name: Spruijt, Ineke
name: Dawit Tesfay Haile
name: Erkens, Connie
name: Hof, Susan Van Den
name: Goosen, Simone
name: Kate, Andrea Ten
name: Hewan Teshome
name: Karels, Marja
name: Koenders, Marga
name: Suurmond, Jeanine
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: Computational Biology

description: Additional file 5. Strategy specific facilitators and barriers identified in interviews with TB care staff, Eritrean key figures and Eritrean participants.
Mössbauer Effect Probe of Local Jahn-Teller distortion in Fe-doped Colossal Magnetoresistive Manganites
Creators: name: Cheng, Zhao-hua
name: Wang, Zhi-hong
name: Di, Nai-li
name: Kou, Zhi-qi
name: Wang, Guang-jun
name: Li, Rui-wei
name: Lu, Yi
name: Li, Qing-an
name: Shen, Bao-gen
name: Dunlap, R. A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Local structure of the Fe-doped La$_{1-x}$Ca$_{x}$MnO$_{3}$ (x=0.00-1.00) compounds has been investigated by means of Mössbauer spectroscopy. $^{57}$Fe Mössbauer spectra provide a direct evidence of Jahn-Teller distortion in these manganites. On the basis of Mössbauer results, the Jahn-Teller coupling was estimated. It is noteworthy that Ca-concentration dependence of Jahn-Teller coupling strength is very consistent with the magnetic phase diagram. Our results reveal that Mössbauer spectroscopy can not only detect the local structural distortion, but also provide a technique to investigate Jahn-Teller coupling of Fe-doped La$_{1-x}$Ca$_{x}$MnO$_{3}$ colossal magnetoresistive perovskites.
description: 3 figures, will appear in Applied Physics Letters
Finiteness of the number of critical values of the Hartree-Fock energy functional less than a constant smaller than the first energy threshold
Creators: name: Ashida, Sohei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81Q05, 35P30

description: We study the Hartree-Fock equation and the Hartree-Fock energy functional universally used in many-electron problems. We prove that the set of all critical values of the Hartree-Fock energy functional less than a constant smaller than the first energy threshold is finite. Since the Hartree-Fock equation which is the corresponding Euler-Lagrange equation is a system of nonlinear eigenvalue problems, the spectral theory for linear operators is not applicable. The present result is obtained establishing the finiteness of the critical values associated with orbital energies less than a negative constant and combining the result with the Koopmans' well-known theorem. The main ingredients are the proof of convergence of the solutions and the analysis of the Fréchet second derivative of the functional at the limit point.
CoARA  e la riforma della valutazione della ricerca
Creators: name: Di Donato, Francesca
Publisher: name: Zenodo
Year: 2024

description: Presentazione al seminario "CoARA e l'INGV. verso una riforma della valutazione della ricerca", Istituto Nazionale di Geofisica e Vulcanologia, Roma, 18 gennaio 2024.

nella presentazione sono illustrati i termini dell’Agreement on Reforming Research Assessment, pubblicato nel luglio 2022, che comprende i principi e gli impegni ai quali hanno aderito i firmatari. Viene inoltre presentata la Coalition on Advancing Research Assessment (CoARA), la sua genesi la missione e la struttura articolata nei gruppi di lavoro (task) e capitoli nazionali (national chapter). Infine, sono illustrate le attività in corso e future del National Chapter italiano.
Universality in active chaos
Creators: name: Tel, Tamas
name: Nishikawa, Takashi
name: Motter, Adilson E.
name: Grebogi, Celso
name: Toroczkai, Zoltan
Publisher: name: arXiv
Year: 2004
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Many examples of chemical and biological processes take place in large-scale environmental flows. Such flows generate filamental patterns which are often fractal due to the presence of chaos in the underlying advection dynamics. In such processes, hydrodynamical stirring strongly couples into the reactivity of the advected species and might thus make the traditional treatment of the problem through partial differential equations difficult. Here we present a simple approach for the activity in in-homogeneously stirred flows. We show that the fractal patterns serving as skeletons and catalysts lead to a rate equation with a universal form that is independent of the flow, of the particle properties, and of the details of the active process. One aspect of the universality of our appraoch is that it also applies to reactions among particles of finite size (so-called inertial particles).
description: 10 pages
Chiral Topological Phononic Quasiparticles in Enantiomeric Crystals SrSi$_2$ and BaSi$_2$
Creators: name: Wang, Yong-Kun
name: Fan, An-Dong
name: Li, Jin-Yang
name: Huang, Huaqing
name: Li, Si
Publisher: name: arXiv
Year: 2025
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Chiral crystals have recently garnered significant interest in condensed matter physics due to their unique electronic and optical properties. In this paper, we explore the connection between the chirality of crystal structures and the chirality of topological quasiparticles. We specifically predict and analyze several chiral enantiomeric materials, such as SrSi$_2$ and BaSi$_2$, which crystallize in the chiral space groups $P4{_3}32$ and $P4{_1}32$. Based on first-principles calculations and theoretical analysis, we reveal that the phonon spectra of these materials host various topological phononic quasiparticles, including charge-2 triple points, charge-2 Dirac points, charge-2 Weyl points, and charge-1 Weyl points. Our paper shows that in these enantiomeric materials, the opposite chirality of the crystal structure results in topological quasiparticles with opposite chiral topological charges and distinct topological surface states. Our paper elucidates the intrinsic relationship between the chirality of crystal structures and the chirality of topological quasiparticles, providing promising theoretical guidance and material platform for investigating the physical properties of chiral crystals.
description: 8 pages, 4 figures
Additional file 4 of Strategies to reach and motivate migrant communities at high risk for TB to participate in a latent tuberculosis infection screening program: a community-engaged, mixed methods study among Eritreans
Creators: name: Spruijt, Ineke
name: Dawit Tesfay Haile
name: Erkens, Connie
name: Hof, Susan Van Den
name: Goosen, Simone
name: Kate, Andrea Ten
name: Hewan Teshome
name: Karels, Marja
name: Koenders, Marga
name: Suurmond, Jeanine
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: Computational Biology

description: Additional file 4. Evaluation of LTBI treatment by the TB physician.
Succesful renormalization of a QCD-inspired Hamiltonian
Creators: name: Pauli, Hans-Christian
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The long standing problem of non perturbative renormalization of a gauge field theoretical Hamiltonian is addressed and explicitly carried out within an (effective) light-cone Hamiltonian approach to QCD. The procedure is in line with the conventional ideas: The Hamiltonian is first regulated by suitable cut-off functions, and subsequently renormalized by suitable counter terms to make it cut-off independent. Emphasized is the considerable freedom in the cut-off function which eventually can modify the Coulomb potential of two charges at sufficiently small distances. The approach provides new physical insight into nature of gauge theory and the potential energy of QCD and QED near the origin. The so obtained formalism is applied to physical mesons with a different flavor of quark and anti-quark. The excitation spectrum of the $ρ$-meson with its excellent agreement between theory and experiment is discussed as a pedagogical example.
description: LaTeX2e, 8 pages, 5 figures, 0 tables, 29 references. Invited talk presented at the 4th International Conference on Perspectives in Hadronic Physics, at the ICTP Trieste, 12 to 16 May, 2003
Discovery of a large dust disk around the nearby star AU Microscopium
Creators: name: Kalas, Paul
name: Liu, Michael C.
name: Matthews, Brenda C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the discovery of a circumstellar dust disk surrounding AU Microscopium (AU Mic, GJ 803, HD 197481). This young M star at 10 parsec has the same age and origin as beta Pictoris, another nearby star surrounded by a dust disk. The AU Mic disk is detected between 50 AU and 210 AU radius, a region where dust lifetimes exceed the present stellar age. Thus, AU Mic is the nearest star where we directly observe the solid material required for planet formation. Since 85% of stars are M-type, the AU Mic disk provides new clues on how the majority of planetary systems might form and evolve.
description: Manuscript and Supporting Online Material (16 pgs, 7 figs, 2 tables). Published online in Science Express (26 Feb. 2004); To appear in print in Science (2004)
Supplemental Data_AJP_R3
Creators: name: Luong, Hien
name: Singh, Sarojini
name: Mallikarjun Patil
name: Prasanna Krishnamurthy
Publisher: name: figshare
Year: 2021
Subjects: subject: 60805 Animal Neurobiology
subject: FOS: Biological sciences
subject: 110201 Cardiology (incl. Cardiovascular Diseases)
subject: FOS: Clinical medicine

description: Supplemental figures for the manuscript:Cardiac glycosaminoglycans and structural alterations during chronic stress-induced depression-like behavior in mice.
Minimal rational curves on the moduli spaces of symplectic and orthogonal bundles
Creators: name: Choe, Insong
name: Chung, Kiryong
name: Lee, Sanghyeon
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14C25, 14D20, 14H37

description: Let $C$ be an algebraic curve of genus $g$ and $L$ a line bundle over $C$. Let $\mathcal{MS}_C(n,L)$ and $\mathcal{MO}_C(n,L)$ be the moduli spaces of $L$-valued symplectic and orthogonal bundles respectively, over $C$ of rank $n$. We construct rational curves on these moduli spaces which generalize Hecke curves on the moduli space of vector bundles. As a main result, we show that these Hecke type curves have the minimal degree among the rational curves passing through a general point of the moduli spaces. As its byproducts, we show the non-abelian Torelli theorem and compute the automorphism group of moduli spaces.
description: 23 pages