cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Generic 1-connectivity of flag domains in Hermitian symmetric spaces
Creators: name: Hayama, Tatsuki
Publisher: name: arXiv
Year: 2022
Subjects: subject: Complex Variables (math.CV)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 14M15, 32M05, 57S20

description: A flag domain is an open real group orbit in a complex flag manifold. It has been shown that a flag domain is either pseudoconvex or pseudoconcave. Moreover, generically 1-connected flag domains are pseudoconcave. In this study, for flag domains contained in irreducible Hermitian symmetric spaces of type AIII or CI, we determine which pseudoconcave flag domain is generically 1-connected.
description: 8 pages, to appear in Journal of Lie Theory
Gas dynamics and star formation in NGC 6822
Creators: name: Park, Hye-Jin
name: Oh, Se-Heon
name: Wang, Jing
name: Zheng, Yun
name: Zhang, Hong-Xin
name: de Blok, W. J. G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present H I gas kinematics and star formation activities of NGC 6822, a dwarf galaxy located in the Local Group at a distance of ~ 490 kpc. We perform profile decomposition of line-of-sight velocity profiles of the H I data cube (42.4" x 12.0" spatial, corresponding to ~ 100 pc; 1.6 km s$^{-1}$ spectral) taken with the Australia Telescope Compact Array (ATCA). For this, we use a new tool, the so-called BAYGAUD which is based on Bayesian analysis techniques, allowing us to decompose a line-of-sight velocity profile into an optimal number of Gaussian components in a quantitative manner. We classify the decomposed H I gas components of NGC 6822 into cool-bulk, warm-bulk, cool-non-bulk and warm-non-bulk motions with respect to their centroid velocities and velocity dispersions. We correlate their gas surface densities with corresponding star formation rate densities derived using both the GALEX far-ultraviolet and WISE 22 $μ$m data to examine the resolved Kennicutt-Schmidt (K-S) law for NGC 6822. Of the decomposed H I gas components, the cool-bulk component is likely to better follow the linear extension of the K-S law for molecular hydrogen (H$_2$) at low gas surface densities where H I is not saturated.
description: 20 pages, 11 figures, 4 tables, accepted for publication in AJ
Mixed metal clusters : an investigation of the reactivity of [MnFe2(Co)12][theta] ; the synthesis of clusters using ([eta]-C5H5)2 Rh2=(CF3C2CF3)([Mu]-Co) and the synthesis of Co2Rh2(co)10(CF3C2CF3)
Creators: name: Liddell, Michael John.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
EFFECTIVENES OF REORIENTATION PROGRAM ON HOURLY ROUNDING ON THE KNOWLEDGE AND PRCATICE AMONG NURSES IN A TERTIARY HOSPITAL IN RIYADH, SAUDI ARABIA
Creators: name: Benson, Liza
Publisher: name: Zenodo
Year: 2021
Subjects: subject: Nursing
subject: FOS: Health sciences
subject: Health and medical services in society
subject: Hourly Rounding
subject: Reorientation Program
subject: Nurses
subject: Knowledge
subject: Relationship
subject: Practice

description: Meaningful and compassionate engagements with patients by caregivers is a core part of nursing as it enables nurses to assess physiological and emotional well-being and intervene if and when appropriate; this would be possible through a systematic proactive way of nursing intervention i.e., hourly rounding where patients are visited hourly and regularly to assess and anticipatedly assist them on their needs. Nurses' education is essential to ensure that patient rounding is purposely understood, routinely, and properly performed. Using a quasi-experiment with pre- and post-one-group
 design the study will determine the effectiveness of the reorientation program
 of hourly rounding on the knowledge and practices of 56 OPD nurses of SFH. In determining the level of knowledge before and after the reorientation of hourly rounding, a standard questionnaire from the research study of Lyons (2010) was modified and utilized while Studor’s Hourly Rounding Competency Skills Checklist was used to determine the nursing practice on hourly rounding. For knowledge assessment, a t-value of -7.92 with a significant p-value between the nurses’ knowledge on hourly rounding before and after the reorientation program was garnered, thus supporting that the program was effective. The nursing practice based on self–assessment had a significant average t-value of -10.472. Comparing the nurses’ extent of practices before and after the reorientation program based on the
 evaluator’s assessment, it revealed that there is a significant difference (t=-15.769). The relationship between knowledge and practice is inversely proportional, but it is insignificant, therefore congruent with the study done by Dowell (2015) whose findings showed a weak correlation between knowledge and practices.
description: Masters Thesis
Algebraic Methods for Quantum Codes on Lattices
Creators: name: Haah, Jeongwan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This is a note from a series of lectures at Encuentro Colombiano de Computacion Cuantica, Universidad de los Andes, Bogota, Colombia, 2015. The purpose is to introduce additive quantum error correcting codes, with emphasis on the use of binary representation of Pauli matrices and modules over a translation group algebra. The topics include symplectic vector spaces, Clifford group, cleaning lemma, an error correcting criterion, entanglement spectrum, implications of the locality of stabilizer group generators, and the classification of translation-invariant one-dimensional additive codes and two-dimensional CSS codes with large code distances. In particular, we describe an algorithm to find a Clifford quantum circuit (CNOTs) to transform any two-dimensional translation-invariant CSS code on qudits of a prime dimension with code distance being the linear system size, into a tensor product of finitely many copies of the qudit toric code and a product state. Thus, the number of embedded toric codes is the complete invariant of these CSS codes under local Clifford circuits.
description: 54 pages; (v2) ref. added
Asteroseismic versus Gaia distances: a first comparison
Creators: name: De Ridder, J.
name: Molenberghs, G.
name: Eyer, L.
name: Aerts, C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context. The Kepler space mission led to a large amount of high-precision time series of solar-like oscillators. Using a Bayesian analysis that combines asteroseismic techniques and additional ground-based observations, the mass, radius, luminosity, and distance of those stars can be estimated with good precision. This has given a new impetus to the research field of galactic archeology. Aims. The first data release of the Gaia space mission contains the TGAS catalog with parallax estimates for more than 2 million stars, including many of the Kepler targets. Our goal is to make a first proper comparison of asteroseismic and astrometric parallaxes of a selection of dwarfs, subgiants, and red giants observed by Kepler for which asteroseismic distances were published. Methods. We compare asteroseismic and astrometric distances of solar-like pulsators using an appropriate statistical errors-in- variables model on a linear as well as on a logarithmic scale. Results. For a sample of 22 dwarf and subgiant solar-like oscillators, the TGAS parallaxes considerably improved the Hipparcos ones, yet the excellent agreement between asteroseismic and astrometric distances still holds. For a sample of 938 Kepler pulsating red giants, the TGAS parallaxes are much more uncertain than the asteroseismic ones, making it worthwhile to validate the former with the latter. From errors-in-variables modelling we find a significant discrepancy between the TGAS parallaxes and the asteroseismic ones. Conclusions. For the sample of dwarfs and subgiants, the comparison between astrometric and asteroseismic parallaxes does not require a revision of the stellar models on the basis of TGAS. For the sample of red giants, we identify possible causes of the discrepancy, which we will likely be able to resolve with the more precise Gaia parallaxes of the upcoming releases.
description: Accepted by A&A
Capacitive Response of Wigner Crystals at the Quantum Hall Plateau
Creators: name: Zhao, Lili
name: Lin, Wenlu
name: Chung, Y. J.
name: Baldwin, K. W.
name: Pfeiffer, L. N.
name: Liu, Yang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In this report, we study ultra-high-mobility two-dimensional (2D) electron/hole systems with high precision capacitance measurement. We find that the capacitance charge appears only at the fringe of the gate at high magnetic field when the 2D conductivity decreases significantly. At integer quantum Hall effects, the capacitance vanishes and forms a plateau at high temperatures $T\gtrsim 300$ mK, which surprisingly, disappears at $T\lesssim 100$ mK. This anomalous behavior is likely a manifestation that the dilute particles/vacancies in the top-most Landau level form Wigner crystal, which has finite compressibility and can host polarization current.
Implementation and validation of the FRi3D flux rope model in EUHFORIA
Creators: name: Maharana, Anwesha
name: Isavnin, Alexey
name: Scolini, Camilla
name: Wijsen, Nicolas
name: Rodriguez, Luciano
name: Mierla, Marilena
name: Magdalenic, Jasmina
name: Poedts, Stefaan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The Flux Rope in 3D (FRi3D, Isavnin, 2016), a coronal mass ejection (CME) model with global three-dimensional (3D) geometry, has been implemented in the space weather forecasting tool EUHFORIA (Pomoell and Poedts, 2018). By incorporating this advanced flux rope model in EUHFORIA, we aim to improve the modelling of CME flank encounters and, most importantly, the magnetic field predictions at Earth. After using synthetic events to showcase FRi3D's capabilities of modelling CME flanks, we optimize the model to run robust simulations of real events and test its predictive capabilities. We perform observation-based modelling of the halo CME event that erupted on 12 July 2012. The geometrical input parameters are constrained using the forward modelling tool included in FRi3D with additional flux rope geometry flexibilities as compared to the pre-existing models. The magnetic field input parameters are derived using the differential evolution algorithm to fit FRi3D parameters to the in situ data at 1 AU. An observation-based approach to constrain the density of CMEs is adopted, in order to achieve a better estimation of mass corresponding to the FRi3D geometry. The CME is evolved in EUHFORIA's heliospheric domain and a comparison of FRi3D's predictive performance with the previously implemented spheromak CME in EUHFORIA is presented. For this event, FRi3D improves the modelling of the total magnetic field magnitude and Bz at Earth by ~30% and ~70%, respectively. Moreover, we compute the expected geoeffectiveness of the storm at Earth using an empirical Dst model and find that the FRi3D model improves the predictions of minimum Dst by ~20% as compared to the spheromak CME model. Finally, we discuss the limitations of the current implementation of FRi3D in EUHFORIA and propose possible improvements.
description: 22 pages, 14 figures
Vector meson condensation in a pion superfluid
Creators: name: Brauner, Tomas
name: Huang, Xu-Guang
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We revisit the suggestion that charged rho-mesons undergo Bose-Einstein condensation in isospin-rich nuclear matter. Using a simple version of the Nambu-Jona-Lasinio (NJL) model, we conclude that rho-meson condensation is either avoided or postponed to isospin chemical potentials much higher than the rho-meson mass as a consequence of the repulsive interaction with the preformed pion condensate. In order to support our numerical results, we work out a linear sigma model for pions and rho-mesons, showing that the two models lead to similar patterns of medium dependence of meson masses. As a byproduct, we analyze in detail the mapping between the NJL model and the linear sigma model, focusing on conditions that must be satisfied for a quantitative agreement between the models.
description: 12 pages, 4 figures; v2: added references, matches published version
Experimental Demonstration of Swift Analytical Universal Control over Nearby Transitions
Creators: name: Li, Yue
name: He, Zhi-Cheng
name: Yuan, Xinxing
name: Zhang, Mengxiang
name: Liu, Chang
name: Wu, Yi-Xuan
name: Zhu, Mingdong
name: Qin, Xi
name: Xue, Zheng-Yuan
name: Lin, Yiheng
name: Du, Jiangfeng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Along with the scaling of dimensions in quantum systems, transitions between the system's energy levels would become close in frequency, which are conventionally resolved by weak and lengthy pulses. Here, we extend and experimentally demonstrate analytically based swift quantum control techniques on a four-level trapped ion system, where we perform individual or simultaneous control over two pairs of spectrally nearby transitions with tailored time-varied drive, achieving operational fidelities ranging from 99.2(3)\% to 99.6(3)\%. Remarkably, we achieve approximately an order of magnitude speed up comparing with the case of weak square pulse for a general control. Therefore, our demonstration may be beneficial to a broad range of quantum systems with crowded spectrum, for spectroscopy, quantum information processing and quantum simulation.
description: 9 pages, 5 figures
An investigation of tram performance measures
Creators: name: Moody, Gail A.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Anisotropic field response of specific heat for a ferromagnetic superconductor UCoGe in magnetic fields
Creators: name: Nakamura, Shota
name: Kittaka, Shunichiro
name: Machida, Kazushige
name: Shimizu, Yusei
name: Nakamura, Ai
name: Aoki, Dai
name: Sakakibara, Toshiro
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Magnetic-field-angle-resolved specific heat and magnetization measurements were conducted on a ferromagnetic superconductor UCoGe with remarkable anisotropic upper critical field $H_{\rm c2}$. Although $H_{\rm c2}$ reaches a high magnetic field ($\sim 20$~T) along the $b$ axis, it is small ($\sim~0.6$~T) when a magnetic field is applied along the magnetic easy $c$-axis. This study indicates that the specific heat is abruptly suppressed when the magnetic field is applied toward the $c$ axis from the $a$ and $b$ axes in the ferromagnetic state. The field response of density of states (DOS) is anisotropic, relative to the $c$ axis, and its angle dependence is slightly singular. The Ising-type magnetic anisotropy of the ferromagnetic state is dominant even in the anisotropic reinforced superconducting state. These facts indicate that the suppression of DOS may closely relate to the superconducting state. We theoretically analyze these findings together with URhGe and UTe$_2$ by highlighting the common and distinctive features among three compounds.
description: This paper is accepted in Phys. Rev. B
Opinion Dynamics in Financial Markets via Random Networks
Creators: name: Granha, Mateus F. B.
name: Vilela, André L. M.
name: Wang, Chao
name: Nelson, Kenric P.
name: Stanley, H. Eugene
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: We investigate the financial market dynamics by introducing a heterogeneous agent-based opinion formation model. In this work, we organize the individuals in a financial market by their trading strategy, namely noise traders and fundamentalists. The opinion of a local majority compels the market exchanging behavior of noise traders, whereas the global behavior of the market influences the fundamentalist agents' decisions. We introduce a noise parameter $q$ to represent a level of anxiety and perceived uncertainty regarding the market behavior, enabling the possibility for an adrift financial action. We place the individuals as nodes in an Erdös-Rényi random graph, where the links represent their social interaction. At a given time, they assume one of two possible opinion states $\pm 1$ regarding buying or selling an asset. The model exhibits such fundamental qualitative and quantitative real-world market features as the distribution of logarithmic returns with fat-tails, clustered volatility, and long-term correlation of returns. We use Student's t distributions to fit the histograms of logarithmic returns, showing the gradual shift from a leptokurtic to a mesokurtic regime, depending on the fraction of fundamentalist agents. We also compare our results with the distribution of logarithmic returns of several real-world financial indices.
description: 23 pages, 12 figures
Activity-assisted self-assembly of colloidal particles
Creators: name: Mallory, S. A.
name: Cacciuto, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We outline a basic strategy of how self-propulsion can be used to improve the yield of a typical colloidal self-assembly process. The success of this approach is predicated on the thoughtful design of the colloidal building block as well as how self-propulsion is endowed to the particle. As long as a set of criteria are satisfied, it is possible to significantly increase the rate of self-assembly, and greatly expand the window in parameter space where self-assembly can occur. In addition, we show that by tuning the relative on/off time of the self-propelling force it is possible to modulate the effective speed of the colloids allowing for further optimization of the self-assembly process.
Erasure without work in an asymmetric, double-well potential
Creators: name: Gavrilov, Momčilo
name: Bechhoefer, John
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: According to Landauer's principle, erasing a memory requires an average work of at least $kT\ln2$ per bit. Recent experiments have confirmed this prediction for a one-bit memory represented by a symmetric double-well potential. Here, we present an experimental study of erasure for a memory encoded in an asymmetric double-well potential. Using a feedback trap, we find that the average work to erase can be less than $kT\ln2$. Surprisingly, erasure protocols that differ subtly give measurably different values for the asymptotic work, a result we explain by showing that one protocol is symmetric with the respect to time reversal, while the other is not. The differences between the protocols help clarify the distinctions between thermodynamic and logical reversibility.
description: 6 pages, 5 figures, and supplemental material
Detectability of satellites around directly imaged exoplanets and brown dwarfs
Creators: name: Lazzoni, Cecilia
name: Desidera, Silvano
name: Gratton, Raffaele
name: Zurlo, Alice
name: Mesa, Dino
name: Ray, Shrishmoy
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Satellites around substellar companions are a heterogeneous class of objects with a variety of different formation histories. Focusing on potentially detectable satellites around exoplanets and brown dwarfs, we might expect to find objects belonging to two main populations: planet-like satellites similar to Titan or the Galileian Satellites - likely formed within the scope of core accretion; and binary-like objects, formed within different scenarios, such as disk instability. The properties of these potential satellites would be very different from each other. Additionally, we expect that their characterization would provide insightful information about the history of the system. This is particularly important for planets/brown dwarfs discovered via direct imaging (DI) with ambiguous origins. In this paper, we review different techniques, applied to DI planets/brown dwarfs, that can be used to discover such satellites. This was achieved by simulating a population of satellites around the exoplanet $β$ Pic b, which served as a test case. For each simulated satellite, the amplitude of DI, radial velocity, transit and astrometric signals, with respect to the planet, were retrieved and compared with the detection limits of current and future instruments. Furthermore, we compiled a list of 38 substellar companions discovered via DI to give a preliminary estimate on the probability of finding satellites extracted from the two populations mentioned above, with different techniques. This simplified approach shows that detection of planet-like satellites, though not strictly impossible, is very improbable. On the other hand, detection of binary-like satellites is within the capabilities of current instrumentation.
E-RIHS IP D.3.4 Draft of the E-RIHS Quality System Implementation Plan
Creators: name: Doherty, Brenda
name: Grau-Bove, Josep
name: Cano, Emilio
name: Strlič, Matija
name: Szikszai, Zita
name: Ramirez, Blanca
name: Targowski, Piotr
name: Padfield, Joseph
name: Sotiropoulou, Sophia
name: Mimoso, João
name: Rodrigues Costa, Dória Maria
name: Virgili, Vania
Publisher: name: Zenodo
Year: 2023
Subjects: E-RIHS
Heritage Science
Quality System
Quality Manual
KPI

description: The quality manual with Key Performance Indicators, designed during the preparatory phase of E-RIHS PP is the foundation to the quality system implementation plan which has been re-drafted to focus on updating necessary procedures and processes for the quality assessment of prospective new partners and services, for the quality auditing of existing E-RIHS partners and services as well as for parties seeking endorsement or support by E-RIHS. Adjustments presented herein regard the tailored set of E-RIHS KPIs acting upon the recommendations of the Commission HLEG of June 2020 to ensure for the effective quality monitoring of activities against reasoned targets for E-RIHS ERIC. With a view towards operations, the responsibility for quality management has been assigned chiefly at national node level with coordination by and delivery to the central hub. This is subject to change and further clarification over the course and development of the E-RIHS IP project and beyond. This deliverable furthermore provides the necessary indications towards defining the overall strategy of how each quality element drafted during E-RIHS PP is to be rendered operational with a dedicated timeframe of E-RIHS partners willing to undergo and test the quality assessment procedures outlined herein during this implementation phase. This live document is under continuous evolution with attention to the progression of overlapping parallel tasks.
A Novel Approach to Multimedia Ontology Engineering for Automated Reasoning over Audiovisual LOD Datasets
Creators: name: Sikos, Leslie F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Multimedia reasoning, which is suitable for, among others, multimedia content analysis and high-level video scene interpretation, relies on the formal and comprehensive conceptualization of the represented knowledge domain. However, most multimedia ontologies are not exhaustive in terms of role definitions, and do not incorporate complex role inclusions and role interdependencies. In fact, most multimedia ontologies do not have a role box at all, and implement only a basic subset of the available logical constructors. Consequently, their application in multimedia reasoning is limited. To address the above issues, VidOnt, the very first multimedia ontology with SROIQ(D) expressivity and a DL-safe ruleset has been introduced for next-generation multimedia reasoning. In contrast to the common practice, the formal grounding has been set in one of the most expressive description logics, and the ontology validated with industry-leading reasoners, namely HermiT and FaCT++. This paper also presents best practices for developing multimedia ontologies, based on my ontology engineering approach.
Insulin binding to rat skeletal muscle : the mechanism in states of altered insulin sensitivity
Creators: name: Ward, Angela Elizabeth.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Fast Orthonormal Sparsifying Transforms Based on Householder Reflectors
Creators: name: Rusu, Cristian
name: Gonzalez-Prelcic, Nuria
name: Heath, Robert
Publisher: name: arXiv
Year: 2016
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Dictionary learning is the task of determining a data-dependent transform that yields a sparse representation of some observed data. The dictionary learning problem is non-convex, and usually solved via computationally complex iterative algorithms. Furthermore, the resulting transforms obtained generally lack structure that permits their fast application to data. To address this issue, this paper develops a framework for learning orthonormal dictionaries which are built from products of a few Householder reflectors. Two algorithms are proposed to learn the reflector coefficients: one that considers a sequential update of the reflectors and one with a simultaneous update of all reflectors that imposes an additional internal orthogonal constraint. The proposed methods have low computational complexity and are shown to converge to local minimum points which can be described in terms of the spectral properties of the matrices involved. The resulting dictionaries balance between the computational complexity and the quality of the sparse representations by controlling the number of Householder reflectors in their product. Simulations of the proposed algorithms are shown in the image processing setting where well-known fast transforms are available for comparisons. The proposed algorithms have favorable reconstruction error and the advantage of a fast implementation relative to the classical, unstructured, dictionaries.
Deep Attention-Based Supernovae Classification of Multi-Band Light-Curves
Creators: name: Pimentel, Óscar
name: Estévez, Pablo A.
name: Förster, Francisco
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: In astronomical surveys, such as the Zwicky Transient Facility, supernovae (SNe) are relatively uncommon objects compared to other classes of variable events. Along with this scarcity, the processing of multi-band light-curves is a challenging task due to the highly irregular cadence, long time gaps, missing-values, few observations, etc. These issues are particularly detrimental to the analysis of transient events: SN-like light-curves. We offer three main contributions: 1) Based on temporal modulation and attention mechanisms, we propose a Deep attention model (TimeModAttn) to classify multi-band light-curves of different SN types, avoiding photometric or hand-crafted feature computations, missing-value assumptions, and explicit imputation/interpolation methods. 2) We propose a model for the synthetic generation of SN multi-band light-curves based on the Supernova Parametric Model, allowing us to increase the number of samples and the diversity of cadence. Thus, the TimeModAttn model is first pre-trained using synthetic light-curves. Then, a fine-tuning process is performed. The TimeModAttn model outperformed other Deep Learning models, based on Recurrent Neural Networks, in two scenarios: late-classification and early-classification. Also, the TimeModAttn model outperformed a Balanced Random Forest (BRF) classifier (trained with real data), increasing the balanced-$F_1$score from $\approx.525$ to $\approx.596$. When training the BRF with synthetic data, this model achieved similar performance to the TimeModAttn model proposed while still maintaining extra advantages. 3) We conducted interpretability experiments. High attention scores were obtained for observations earlier than and close to the SN brightness peaks. This also correlated with an early highly variability of the learned temporal modulation.
description: Submitted to AJ on 14-Jan-2022
SWAG Newsletter (December, 1978)
Creators: name: Group, Victoria Status Of Women Action
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: subject: Women--Economic conditions
valueUri: http://id.worldcat.org/fast/1176665
subject: Sex discrimination against women
valueUri: http://id.worldcat.org/fast/1114376
subject: Women
valueUri: http://id.worldcat.org/fast/1176568
subject: Feminism
valueUri: http://id.worldcat.org/fast/922671
subject: Women--Legal status, laws, etc.
valueUri: http://id.worldcat.org/fast/1176824
subject: Women's rights
valueUri: http://id.worldcat.org/fast/1178818
subject: Women--Social conditions
valueUri: http://id.worldcat.org/fast/1176947
subject: Women--Societies and clubs
valueUri: http://id.worldcat.org/fast/1176970
subject: Women--Employment--Law and legislation
valueUri: http://id.worldcat.org/fast/1176724

description: The Victoria chapter of the Status of Women Action Group (SWAG) was formed in 1971 in response to the 1970 Report of the Royal Commission on the Status of Women. SWAG is a feminist organization that promotes economic, political and social equality and freedom for women. It is a non-profit society with several committees working on specific issues of concern to women. The group is an active member of the BC and Yukon Association of Women's Centres and the National Action Committee on the Status of Women.
Effective minimal model and unconventional spin-singlet pairing in Kagome superconductor CsV3Sb5
Creators: name: Bai, Xiao-Cheng
name: Wu, Wen-Feng
name: Wang, Han-Yu
name: Quan, Ya-Min
name: Wang, Xian-Long
name: Zeng, Zhi
name: Zou, Liang-Jian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Recently synthesized Kagome compounds AV$_3$Sb$_5$ attract great attention due to the unusual coexistence of the topology, charge density wave and superconductivity. In this {\it Letter}, based on the band structures for CsV$_3$Sb$_5$ in pristine phase, we fit an effective 6-band model for the low-energy processes; utilizing the random phase approximation (RPA) on the effective minimal model, we obtain the momentum-resolved static spin susceptibility attributing the spin-fluctuation pairing mechanism, we find that the superconducting pairing strengths increase with the lift of the Coulomb correlation, and the superconductive pairing symmetry is singlet, the gap functions are antisymmetric with respect to the x-axis and the y-axis in the intermediate to strong Coulomb correlated regime,indicating the unconventional superconductivity in Kagome compounds AV$_3$Sb$_5$.
description: 6 pages, 6 figures
Genetic variation and its relevance to the study of population structure of marine turtles
Creators: name: Gyuris, Emese.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Future Workshop and Knowledge Partnership: Gender inclusive Mobility
Creators: name: Wandl-Vogt, Eveline
name: Falkinger, Claudia
Publisher: name: Zenodo
Year: 2023
Subjects: mobility
inklusive
SDGs
justice
walking
biking
Design Futuring
Mixed Methods

description: Presentation along the workshop "Gender inclusive Mobility" at the STS conference 2023 in Graz. This session was made possible through a cross-sectoral collaboration (Punkt vor Strich, Community Creates Mobility) and based on a grant from the Austrian Science Fund (FWF) for the PROVIDEDH project NR I 3441-N33 in the CHiST-ERA funding scheme.
A Perturbative Approach to the Redshift Space Power Spectrum: Beyond the Standard Model
Creators: name: Bose, Benjamin
name: Koyama, Kazuya
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We develop a code to produce the power spectrum in redshift space based on standard perturbation theory (SPT) at 1-loop order. The code can be applied to a wide range of modified gravity and dark energy models using a recently proposed numerical method by A.Taruya. This includes Horndeski's theory with a general potential, which accommodates both chameleon and Vainshtein screening mechanisms and provides a non-linear extension of the effective theory of dark energy up to third order. Focus is on a recent non-linear model of the redshift space power spectrum which has been shown to model the anisotropy very well at relevant scales for the SPT framework, as well as capturing relevant non-linear effects typical of modified gravity theories. We provide consistency checks of the code against established results and elucidate it's application within the light of upcoming high precision RSD data.
description: 23 pages, 23 figures, accepted for publication in JCAP
A Probabilistic Autoencoder for Type Ia Supernovae Spectral Time Series
Creators: name: Stein, George
name: Seljak, Uros
name: Bohm, Vanessa
name: Aldering, G.
name: Antilogus, P.
name: Aragon, C.
name: Bailey, S.
name: Baltay, C.
name: Bongard, S.
name: Boone, K.
name: Buton, C.
name: Copin, Y.
name: Dixon, S.
name: Fouchez, D.
name: Gangler, E.
name: Gupta, R.
name: Hayden, B.
name: Hillebrandt, W.
name: Karmen, M.
name: Kim, A. G.
name: Kowalski, M.
name: Kusters, D.
name: Leget, P. F.
name: Mondon, F.
name: Nordin, J.
name: Pain, R.
name: Pecontal, E.
name: Pereira, R.
name: Perlmutter, S.
name: Ponder, K. A.
name: Rabinowitz, D.
name: Rigault, M.
name: Rubin, D.
name: Runge, K.
name: Saunders, C.
name: Smadja, G.
name: Suzuki, N.
name: Tao, C.
name: Thomas, R. C.
name: Vincenzi, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We construct a physically-parameterized probabilistic autoencoder (PAE) to learn the intrinsic diversity of type Ia supernovae (SNe Ia) from a sparse set of spectral time series. The PAE is a two-stage generative model, composed of an Auto-Encoder (AE) which is interpreted probabilistically after training using a Normalizing Flow (NF). We demonstrate that the PAE learns a low-dimensional latent space that captures the nonlinear range of features that exists within the population, and can accurately model the spectral evolution of SNe Ia across the full range of wavelength and observation times directly from the data. By introducing a correlation penalty term and multi-stage training setup alongside our physically-parameterized network we show that intrinsic and extrinsic modes of variability can be separated during training, removing the need for the additional models to perform magnitude standardization. We then use our PAE in a number of downstream tasks on SNe Ia for increasingly precise cosmological analyses, including automatic detection of SN outliers, the generation of samples consistent with the data distribution, and solving the inverse problem in the presence of noisy and incomplete data to constrain cosmological distance measurements. We find that the optimal number of intrinsic model parameters appears to be three, in line with previous studies, and show that we can standardize our test sample of SNe Ia with an RMS of $0.091 \pm 0.010$ mag, which corresponds to $0.074 \pm 0.010$ mag if peculiar velocity contributions are removed. Trained models and codes are released at \href{https://github.com/georgestein/suPAErnova}{github.com/georgestein/suPAErnova}
description: 23 pages, 8 Figures, 1 Table. Accepted to ApJ
What are the Composition and Power of the Jet in Cyg X-1?
Creators: name: Zdziarski, Andrzej A.
name: Egron, Elise
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We calculate the electron-positron pair production rate at the base of the jet of Cyg X-1 by collisions of photons from its hot accretion flow using the measurement of its average soft gamma-ray spectra by the Compton Gamma Ray Observatory and INTEGRAL satellites. We have found that this rate approximately equals the flow rate of the leptons emitting the observed synchrotron radio-to-IR spectrum of the jet, calculated using an extended jet model following that of Blandford \& Koenigl. This coincidence shows the jet composition is likely to be pair-dominated. The same coincidences were found before in the microquasar MAXI J1820+070 and in the radio galaxy 3C 120, which shows that the considered mechanism can be universal for at least some classes of relativistic jets. Furthermore, we recalculate the jet power of Cyg X-1. The presence of pairs can strongly reduces the power in the bulk motion of ions, which then limits the parameter space at which the jet can power the $\sim$5-pc nebular structure present in its vicinity.
description: ApJL, in press
title: Genetic resources of Thymus vulgaris L. and T. vulgaris x T. Marschallianus Willd. in the Czech Republic
Creators: name: Dušková, Elena
name: Dušek, Karel
name: Smékalová, Kateřina
name: Nosálková, Marie
name: Benická, Sandra
Publisher: name: Julius Kühn-Institut
Year: 2016
Subjects: subject: thyme
subject: descriptor list
subject: essential oil
subject: citral
subject: terpineol acetate

description: Julius-Kühn-Archiv 453
description: Two varieties of Thymus vulgaris L. (´Krajový´ and ´Winter´) and three its hybrids with T. Marschallianus Will. (variety ´Mixta´ and two accessions of variety ´Lemona´) were evaluated according the Draft Descriptor List Thymus vulgaris L. and analysed for the essential oil content and composition in years 2014 and 2015. All evaluated accessions were found morphologically and/or chemically different. Varieties ´Krajový´, ´Winter´ and ´Mixta´ were assessed as a thymol type with the thymol (39.1 – 69.6 %), o-cymene (6.3 – 24.9 %) and γ-terpinene (2.75 – 13.8 %) as main oil components. The two accessions of ´Lemona´ variety were found significantly different each other: one of them (income No. 3239) was assessed as a terpineol type with the terpineol acetate (75.7 %) and α-terpineol (16.9 %) as main oil components and the other one (income No. 2757) as a geraniol type with the geranyl acetate (±42.4 %) and geraniol (±20.8 %) as main oil components. Only the accession with income No. 3239 was proved as a ´Lemona´ variety due its citral (±9.3 %) content, though even this content is too small compare to original ´Lemona´ where about 20 % of citral was declared.
$Δ$ (1232) effects in density-dependent relativistic Hartree-Fock theory and neutron stars
Creators: name: Zhu, Zhen-Yu
name: Li, Ang
name: Hu, Jin-Niu
name: Sagawa, Hiroyuki
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The density-dependent relativistic Hartree-Fock (DDRHF) theory is extended to include $Δ$-isobars for the study of dense nuclear matter and neutron stars. To this end, we solve the Rarita-Schwinger equation for spin-3/2 particle. Both the direct and exchange terms of the $Δ$-isobars' self-energies are evaluated in details. In comparison with the relativistic mean field theory (Hartree approximation), a weaker parameter dependence is found for DDRHF. An early appearance of $Δ$-isobars is recognized at $ρ_B\sim0.27$fm$^{-3}$, comparable with that of hyperons. Also, we find that the $Δ$-isobars' softening of the equation of state is found to be mainly due to the reduced Fock contributions from the coupling of the isoscalar mesons, while the pion contributions are found negligibly small. We finally conclude that with typical parameter sets, neutron stars with $Δ$-isobars in their interiors could be as heavy as the two massive pulsars whose masses are precisely measured, with slightly smaller radii than normal neutron stars.
description: 13 pages, 7 figures, 5 tables, 4 appendixes, Phys. Rev. C (2016) accepted
Zinzendorf und die Herrnhuter Brüdergemeine zwischen Berner Patriziat und Heimberger (Oberländer) Brüdern
Creators: name: Dellsperger, Rudolf
Publisher: name: Unitas Fratrum
Year: 1970

description: Unitas Fratrum, Bd. 29 (1991): Unitas Fratrum, Band 29/30
Regular and almost universal hashing: an efficient implementation
Creators: name: Ivanchykhin, Dmytro
name: Ignatchenko, Sergey
name: Lemire, Daniel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Random hashing can provide guarantees regarding the performance of data structures such as hash tables---even in an adversarial setting. Many existing families of hash functions are universal: given two data objects, the probability that they have the same hash value is low given that we pick hash functions at random. However, universality fails to ensure that all hash functions are well behaved. We further require regularity: when picking data objects at random they should have a low probability of having the same hash value, for any fixed hash function. We present the efficient implementation of a family of non-cryptographic hash functions (PM+) offering good running times, good memory usage as well as distinguishing theoretical guarantees: almost universality and component-wise regularity. On a variety of platforms, our implementations are comparable to the state of the art in performance. On recent Intel processors, PM+ achieves a speed of 4.7 bytes per cycle for 32-bit outputs and 3.3 bytes per cycle for 64-bit outputs. We review vectorization through SIMD instructions (e.g., AVX2) and optimizations for superscalar execution.
description: accepted for publication in Software: Practice and Experience in September 2016
NICUDAMAS : a data management system for use in neonatal intensive care
Creators: name: Wilson, Fiona Elizabeth.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Observation of spin-tensor induced topological phase transitions of triply degenerate points with a trapped ion
Creators: name: Zhang, Mengxiang
name: Yuan, Xinxing
name: Luo, Xi-Wang
name: Liu, Chang
name: Li, Yue
name: Zhu, Mingdong
name: Qin, Xi
name: Lin, Yiheng
name: Du, Jiangfeng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Triply degenerate points (TDPs), which correspond to new types of topological semimetals, can support novel quasiparticles possessing effective integer spins while preserving Fermi statistics. Here by mapping the momentum space to the parameter space of a three-level system in a trapped ion, we experimentally explore the transitions between different types of TDPs driven by spin-tensor--momentum couplings. We observe the phase transitions between TDPs with different topological charges by measuring the Berry flux on a loop surrounding the gap-closing lines, and the jump of the Berry flux gives the jump of the topological charge (up to a $2π$ factor) across the transitions. For the Berry flux measurement, we employ a new method by examining the geometric rotations of both spin vectors and tensors, which lead to a generalized solid angle equal to the Berry flux. The controllability of multi-level ion offers a versatile platform to study high-spin physics and our work paves the way to explore novel topological phenomena therein.
description: 9 pages, 10 figures
Standing solitary waves as transitions to spiral structures in gravitationally unstable accretion disks
Creators: name: Deng, Hongping
name: Ogilvie, Gordon I.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Astrophysical disks that are sufficiently cold and dense are linearly unstable to the formation of axisymmetric rings as a result of the disk's gravity. In practice, spiral structures are formed, which may in turn produce bound fragments. We study a nonlinear dynamical path that can explain the development of spirals in a local model of a gaseous disk on the subcritical side of the gravitational instability bifurcation. Axisymmetric equilibria can be radially periodic or localized, in the form of standing solitary waves. The solitary solutions have an energy slightly larger than a smooth disk. They are further unstable to non-axisymmetric perturbations with a wide range of azimuthal wavenumbers. The solitary waves may act as a pathway to spirals and fragmentation.
description: 6 pages, 4 figures, ApJL accepted