cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Different Indices as Indicators of Phosphorus Availability to Wheat on Vertisols in Central Highlands of Ethiopia
Creators: name: Hailu, Hillette
name: Keskinen, Riikka
name: Woldetsadik, Desta
name: Mamo, Tekalign
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Molecular Biology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Plant Biology
subject: Computational Biology

description: Vertisols are important soils in the agricultural activity of Ethiopia. Their wide distribution and erratic crop responses to recommended phosphorus (P) fertilizer application justify the attempt for determining the P status and most suitable P availability estimation on these soils. In the present study, the forms of soil P and their relationship with different indices of available P and P uptake by wheat grown under greenhouse were evaluated. Total P, organic P, seven indices of available soil P, and fractions of soil inorganic P were determined from surface soil samples of ten Ethiopian central highland Vertisols. The amount of active inorganic P fractions i.e. water-soluble and loosely bound P, Al-phosphates (Al-P), Fe-phosphates (Fe-P) and Ca-phosphates (Ca-P) found to contain; < 0.5, 4–33, 4–66, and 15–73 mg P kg−1, respectively. As for the different indices of soil available P, the extraction efficiency of the tested methods was found to decrease in the order: ammonium oxalate > Olsen > Mehlich3 > Bray1 > ammonium acetate > ammonium bicarbonate-diethylene triamine pentaacetic acid (AB-DTPA) > 0.01 M calcium chloride (CaCl2). Olsen-P (r = 0.83) and AB-DTPA-P (r = 0.83) showed significant (P < .001) correlation with the P uptake by wheat and the active inorganic P fractions (Al-P and Fe-P). Moreover, multiple regression analysis indicated that the variation of P extracted by Olsen and AB-DTPA methods were best predicted by Fe-P (84%) and Al-P (68%), respectively. Consequently, Olsen and AB-DTPA methods were found to be most suitable for determining wheat available P on vertisols of central highlands of Ethiopia.
Co-Evolution of Galactic Nuclei and Globular Cluster Systems
Creators: name: Gnedin, Oleg Y.
name: Ostriker, Jeremiah P.
name: Tremaine, Scott
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We revisit the hypothesis that dense galactic nuclei are formed from inspiraling globular clusters. Recent advances in understanding of the continuous formation of globular clusters over cosmic time and the concurrent evolution of the galaxy stellar distribution allow us to construct a simple model that matches the observed spatial and mass distributions of clusters in the Galaxy and the giant elliptical galaxy M87. In order to compare with observations, we model the effects of dynamical friction and dynamical evolution, including stellar mass loss, tidal stripping of stars, and tidal disruption of clusters by the growing galactic nucleus. We find that inspiraling globular clusters form a dense central structure, with mass and radius comparable to the typical values in observed nuclear star clusters (NSCs) in late-type and low-mass early-type galaxies. The density contrast associated with the NSC is less pronounced in giant elliptical galaxies. Our results indicate that the NSC mass as a fraction of mass of the galaxy stellar spheroid scales as M_NSC/M_* = 0.0025 M_{*,11}^{-0.5}. Thus disrupted globular clusters could contribute most of the mass of NSCs in galaxies with stellar mass below 10^{11} Msun. The inner part of the accumulated cluster may seed the growth of a central black hole via stellar dynamical core collapse, thereby relieving the problem of how to form luminous quasars at high redshift. The seed black hole may reach about 10^5 Msun within 1 Gyr of the beginning of globular cluster formation.
description: 15 pages, submitted to ApJ, revised version after referee comments
Oligoryzomys flavescens
Creators: name: Musser, Guy G.
name: Carleton, Michael D.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Oligoryzomys
Oligoryzomys flavescens

description: Oligoryzomys flavescens (Waterhouse, 1837). Proc. Zool. Soc. Lond., 1837:19. TYPE LOCALITY: Uruguay, Maldonado. DISTRIBUTION: SE Brazil, Uruguay, and Argentina (south to Chubut Prov.). SYNONYMS: antoniae, occidentalis. COMMENTS: Chromosomal variation reported and taxonomic implications discussed by Sbalqueiro et al. (1991).
description: Published as part of Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 717, DOI: 10.5281/zenodo.7353098
description: {"references": ["Sbalqueiro, I. J., M. S. Mattevi, L. F. B. Oliveira, and M. J. V. Solano. 1991. B chromosome system in populations of Oryzomys flavescens (Rodentia, Cricetidae) from southern Brazil. Acta Theriologica, 36: 193 - 199."]}
Ultra-nonlocality in density functional theory for photo-emission spectroscopy
Creators: name: Uimonen, A. -M.
name: Stefanucci, G.
name: van Leeuwen, R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We derive an exact expression for the photo-current of photo-emission spectroscopy using time-dependent current density functional theory (TDCDFT). This expression is given as an integral over the Kohn-Sham spectral function renormalized by effective potentials that depend on the exchange-correlation kernel of current density functional theory. We analyze in detail the physical content of this expression by making a connection between the density-functional expression and the diagrammatic expansion of the photo-current within many-body perturbation theory. We further demonstrate that the density functional expression does not provide us with information on the kinetic energy distribution of the photo-electrons. Such information can, in principle, be obtained from TDCDFT by exactly modeling the experiment in which the photo-current is split into energy contributions by means of an external electromagnetic field outside the sample, as is done in standard detectors. We find, however, that this procedure produces very nonlocal correlations between the exchange-correlation fields in the sample and the detector.
description: 11 pages, 11 figures
The Excitation of HCN and HCO+ in the Galactic Center Circumnuclear Disk
Creators: name: Mills, Elisabeth A. C.
name: Güsten, Rolf
name: Torres, Miguel A. Requena
name: Morris, Mark R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present new observations of HCN and HCO+in the circumnuclear disk (CND) of the Galaxy, obtained with the APEX telescope. We have mapped emission in rotational lines of HCN J = 3-2, 4-3, and 8-7, as well as HCO+ J = 3-2, 4-3, and 9-8. We also present spectra of H13CN and H13CO+ toward four positions in the CND. Using the intensities of all of these lines, we present an excitation analysis for each molecule using the non-LTE radiative transfer code RADEX. The HCN line intensities toward the northern emission peak of the CND yield log densities (cm^-3) of 5.6 +0.6/-0.6, consistent with those measured with HCO+, as well as with densities recently reported for this region from an excitation analysis of highly-excited lines of CO. These densities are too low for the gas to be tidally stable. The HCN line intensities toward the CND's southern emission peak yield log densities of 6.5 +0.5/-0.7, higher than densities determined for this part of the CND with CO (although the densities measured with HCO+, log [n] = 5.6 +0.2/-0.2, are more consistent with the CO-derived densities). We investigate whether the higher densities we infer from HCN are affected by mid-infrared radiative excitation of this molecule through its 14 micron rovibrational transitions. We find that radiative excitation is important for at least one clump in the CND, where we additionally detect the J = 4-3, v2=1 vibrationally-excited transition of HCN, which is excited by dust temperatures of > 125-150 K. If this hot dust is present elsewhere in the CND, it could lower our inferred densities, potentially bringing the HCN-derived densities for the Southern part of the CND into agreement with those measured using HCO+ and CO. Additional sensitive, high-resolution submillimeter observations, as well as mid-infrared observations, would be useful to assess the importance of the radiative excitation of HCN in this environment.
description: 25 pages, 18 figures; Accepted to ApJ, updated affiliations
Excitation spectrum of spin-1 Kitaev spin liquids
Creators: name: Chen, Yu-Hsueh
name: Genzor, Jozef
name: Kim, Yong Baek
name: Kao, Ying-Jer
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the excitation spectrum of the spin-1 Kitaev model using the symmetric tensor network. By evaluating the virtual order parameters defined on the virtual Hilbert space in the tensor network formalism, we confirm the ground state is in a $\mathbb{Z}_2$ spin liquid phase. Using the correspondence between the transfer matrix spectrum and low-lying excitations, we find that contrary to the dispersive Majorana excitation in the spin-1/2 case, the isotropic spin-1 Kitaev model has a dispersive charge anyon excitation. Bottom of the gapped single-particle charge excitations are found at $\mathbf{K}, \mathbf{K}'=(\pm2π/3, \mp 2π/3)$, with a corresponding correlation length of $ξ\approx 6.7$ unit cells. The lower edge of the two-particle continuum, which is closely related to the dynamical structure factor measured in inelastic neutron scattering experiments, is obtained by extracting the excitations in the vacuum superselection sector in the anyon theory language
description: 7 pages, 8 figures
Oligoryzomys fulvescens
Creators: name: Musser, Guy G.
name: Carleton, Michael D.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Oligoryzomys
Oligoryzomys fulvescens

description: Oligoryzomys fulvescens (Saussure, 1860). Revue Mag. Zool. Paris, ser. 2, 12: 102. TYPE LOCALITY: Mexico, Veracruz, Orizaba (as restricted by Merriam, 1901:295). DISTRIBUTION: W and E versants of S Mexico, through Mesoamerica, to Ecuador, northernmost Brazil, and Guianas in South America. SYNONYMS: costaricensis, creper, delicatus, engraciae, lenis, mayensis, messorius, munchiquensis, navus, nicaraguae, pacificus, reventazoni, tenuipes. COMMENTS: All Central American forms retained as subspecies (see Hall, 1981). Variable karyotypic descriptions intimate that more than one species occurs among the listed synonyms (Gardner and Patton, 1976; Haiduk et al., 1979).
description: Published as part of Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 718, DOI: 10.5281/zenodo.7353098
description: {"references": ["Hall, E. R. 1981. The mammals of North America. Second ed. John Wiley and Sons, New York, 1: 1 - 600 + 90, 2: 601 - 1181 + 90.", "Gardner, A. L., and J. L. Patton. 1976. Karyotypic variation in oryzomyine rodents (Cricetinae) with comments on chromosomal evolution in the Neotropical cricetine complex. Occasional Papers of the Museum of Zoology, Louisiana State University, 49: 1 - 48.", "Haiduk, M. W., J. W. Bickham, and D. J. Schmidly. 1979. Karyotypes of six species of Oryzomys from Mexico and Central America. Journal of Mammalogy, 60: 610 - 615."]}
η and η' mixing from Lattice QCD
Creators: name: Michael, Chris
name: Ottnad, Konstantin
name: Urbach, Carsten
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a lattice QCD computation of $η$ and $η^\prime$ masses and mixing angles, for the first time controlling continuum and quark mass extrapolations. The results for the eta mass 551(8)(6) MeV (first error statistical, second systematic) and the eta' mass 1006(54)(38)(+61) MeV (third error from our method) are in excellent agreement with experiment. Our data show that the mixing in the quark flavour basis can be described by a single mixing angle of 46(1)(3) degree indicating that the eta' is mainly a flavour singlet state.
description: some references added, one typo corrected, matching published version
The development of the “Telislife” questionnaire (Bolzer et al., 2020)
Creators: name: Bolzer, Adrien
name: Hoen, Michel
name: Montaut-Verient, Bettina
name: Hoffmann, Charles
name: Ardoint, Marine
name: Laplante-Lévesque, Ariane
name: Guevara, Nicholas
name: Mom, Thierry
name: Karoui, Chadlia
name: Vincent, Christophe
name: Parietti-Winkler, Cécile
Publisher: name: ASHA journals
Year: 2020
Subjects: subject: 200101 Communication Studies
subject: FOS: Media and communications
subject: 200102 Communication Technology and Digital Media Studies

description: Purpose: For cochlear implant users, the ability to use the telephone is often seen as an important landmark during rehabilitation and an indicator of cochlear implant benefit. The goal of this study was to develop a short questionnaire exploring the ability to use the telephone in cochlear implant users, named Telislife, and test it in a group of experienced users.Method: This prospective multicenter study was based on the completion of self-administrated questionnaires. The Telislife includes 20 items using a 5-point Likert scale for answers. Speech recognition scores were obtained with monosyllabic word lists at 70 dB HL. Quality of life was evaluated with the Nijmegen Cochlear Implant Questionnaire. This study included 55 adult patients wearing a cochlear implant for over 1 year.Results: The Telislife questionnaire showed excellent reliability (Cronbach’s α = .91). A significant correlation was found between Telislife scores and Nijmegen Cochlear Implant Questionnaire scores (r = .69, p < .001) and speech recognition scores (r = .35, p = .007).Conclusion: Given significant correlations between Telislife scores and both speech recognition and quality of life and given its short form, the Telislife questionnaire appears to be a reliable tool to evaluate cochlear implant outcomes in clinical practice.
Supplemental Material S1. Telislife Questionnaire.
Bolzer, A., Hoen, M., Montaut-Verient, B., Hoffmann, C., Ardoint, M., Laplante-Lévesque, A., Guevara, N., Mom, T., Karoui, C., Vincent, C., & Parietti-Winkler, C. (2020). The development of the “Telislife” questionnaire for the evaluation of telephone use in cochlear implant users. Journal of Speech, Language, and Hearing Research. Advance online publication. https://doi.org/10.1044/2020_JSLHR-20-00273
Principal component analysis for Gaussian process posteriors
Creators: name: Ishibashi, Hideaki
name: Akaho, Shotaro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: This paper proposes an extension of principal component analysis for Gaussian process (GP) posteriors, denoted by GP-PCA. Since GP-PCA estimates a low-dimensional space of GP posteriors, it can be used for meta-learning, which is a framework for improving the performance of target tasks by estimating a structure of a set of tasks. The issue is how to define a structure of a set of GPs with an infinite-dimensional parameter, such as coordinate system and a divergence. In this study, we reduce the infiniteness of GP to the finite-dimensional case under the information geometrical framework by considering a space of GP posteriors that have the same prior. In addition, we propose an approximation method of GP-PCA based on variational inference and demonstrate the effectiveness of GP-PCA as meta-learning through experiments.
Probing the in-medium $P_T$-broadening by $γ$+HF angular de-correlations
Creators: name: Wang, Sa
name: Kang, Jin-Wen
name: Dai, Wei
name: Zhang, Ben-Wei
name: Wang, Enke
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Angular correlations between vector boson and heavy flavors~(HF) are potentially new effective tools to gain insight into the partonic interactions in the quark-gluon plasma (QGP). In this paper, we present the theoretical study of the azimuthal angular de-correlations of $γ+$HF in nucleus-nucleus collisions as a new probe of the in-medium $P_T$-broadening effect. The initial production of $γ+$HF in p+p is generated by SHERPA which matches the next-to-leading hard processes with parton shower. The in-medium heavy quark evolution is implemented by a Monte Carlo Langevin simulation, which takes into account the collisional and radiative energy loss. We observe considerable suppression at $Δϕ_{γD}\simπ$ and enhancement at $Δϕ_{γD}<2.8$ in $γ+$D azimuthal angular distribution in $0-10\%$ Pb+Pb collisions at $\sqrt{s_{NN}}=$5.02 TeV compared to the p+p baseline, which indicates evident in-medium $P_T$-broadening of charm quarks. We also find that the overall modification patterns of $γ+$D angular distribution are sensitive to the selection cut of D meson $p_T$. Furthermore, by constructing the 2D ($x_{J}^{γD}, Δϕ_{γD}$) correlation diagram, it's possible to display the respective impacts of the two aspects of jet quenching, energy loss and $P_T$-broadening, on the final-state $γ+$D observable simultaneously. Additionally, we find weaker angular de-correlations of $γ+$B compared to $γ+$D which may be helpful to understand the mass hierarchy in heavy-ion collisions. Finally, the nuclear modification of $Δϕ_{γD}$ distributions in central $0-10\%$ Au+Au collisions at RHIC energy is provided for completeness.
description: 11 pages, 9 figures
Diatom Lesson Plans
Creators: name: Nash, Jillian
name: Izazaga, Zulay
name: Gandrud, Julia
name: Maia, Anabela
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 370801
subject: Biological oceanography

description: This project is designed to educate local RhodeIsland communities about Coastal Resilience. This lesson plan is regarding diatoms, algae present in major bodies of water as indicators of water health. Students will use techniques from art and science disciplines to further understanding of diatoms and their significance.
Pythia: A Customizable Hardware Prefetching Framework Using Online Reinforcement Learning
Creators: name: Bera, Rahul
name: Kanellopoulos, Konstantinos
name: Nori, Anant V.
name: Shahroodi, Taha
name: Subramoney, Sreenivas
name: Mutlu, Onur
Publisher: name: arXiv
Year: 2021
Subjects: subject: Hardware Architecture (cs.AR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: C.1.2

description: Past research has proposed numerous hardware prefetching techniques, most of which rely on exploiting one specific type of program context information (e.g., program counter, cacheline address) to predict future memory accesses. These techniques either completely neglect a prefetcher's undesirable effects (e.g., memory bandwidth usage) on the overall system, or incorporate system-level feedback as an afterthought to a system-unaware prefetch algorithm. We show that prior prefetchers often lose their performance benefit over a wide range of workloads and system configurations due to their inherent inability to take multiple different types of program context and system-level feedback information into account while prefetching. In this paper, we make a case for designing a holistic prefetch algorithm that learns to prefetch using multiple different types of program context and system-level feedback information inherent to its design. To this end, we propose Pythia, which formulates the prefetcher as a reinforcement learning agent. For every demand request, Pythia observes multiple different types of program context information to make a prefetch decision. For every prefetch decision, Pythia receives a numerical reward that evaluates prefetch quality under the current memory bandwidth usage. Pythia uses this reward to reinforce the correlation between program context information and prefetch decision to generate highly accurate, timely, and system-aware prefetch requests in the future. Our extensive evaluations using simulation and hardware synthesis show that Pythia outperforms multiple state-of-the-art prefetchers over a wide range of workloads and system configurations, while incurring only 1.03% area overhead over a desktop-class processor and no software changes in workloads. The source code of Pythia can be freely downloaded from https://github.com/CMU-SAFARI/Pythia.
Zero temperature properties of mesons and baryons from an extended linear sigma-model
Creators: name: Kovacs, Peter
name: Wolf, Gyorgy
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: An extended linear sigma model with mesons (q\bar{q} states) and baryons (qqq states) is presented. The model contains a low energy multiplet for every hadronic particle type, namely a scalar, a pseudoscalar, a vector, and an axialvector nonet, an baryon octet and a baryon decuplet. The model parameters are determined through a multiparametric minimalization with the help of well known physical quantities. It is found that the considered zero temperature quantities (masses and decay widths) can be described well at tree-level and are in good agreement with the experimental data.
description: conference proceedings to FAIRNESS 2013, 15-21 September 2013, Berlin, Germany
Conditional Cross-Design Synthesis Estimators for Generalizability in Medicaid
Creators: name: Degtiar, Irina
name: Layton, Tim
name: Wallace, Jacob
name: Rose, Sherri
Publisher: name: arXiv
Year: 2021
Subjects: subject: Methodology (stat.ME)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: 62G05 (Primary), 62P25 (Secondary)

description: While much of the causal inference literature has focused on addressing internal validity biases, both internal and external validity are necessary for unbiased estimates in a target population of interest. However, few generalizability approaches exist for estimating causal quantities in a target population when the target population is not well-represented by a randomized study but is reflected when additionally incorporating observational data. To generalize to a target population represented by a union of these data, we propose a class of novel conditional cross-design synthesis estimators that combine randomized and observational data, while addressing their respective biases. The estimators include outcome regression, propensity weighting, and double robust approaches. All use the covariate overlap between the randomized and observational data to remove potential unmeasured confounding bias. We apply these methods to estimate the causal effect of managed care plans on health care spending among Medicaid beneficiaries in New York City.
description: 25 pages, 4 figures; supplement of 31 pages, 12 figures, and 4 tables
Application of quantum computing to a linear non-Gaussian acyclic model for novel medical knowledge discovery
Creators: name: Kawaguchi, Hideaki
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Recently, with the digitalization of medicine, the utilization of real-world medical data collected from clinical sites has been attracting attention. In this study, quantum computing was applied to a linear non-Gaussian acyclic model to discover causal relationships from real-world medical data alone. Specifically, the independence measure of DirectLiNGAM, a causal discovery algorithm, was calculated using the quantum kernel and its accuracy on real-world medical data was verified. When DirectLiNGAM with the quantum kernel (qLiNGAM) was applied to real-world medical data, a case was confirmed in which the causal structure could be correctly estimated when the amount of data was small, which was not possible with existing methods. Furthermore, qLiNGAM was implemented on real quantum hardware in an experiment using IBMQ. It is suggested that qLiNGAM may be able to discover new medical knowledge and contribute to the solution of medical problems, even when only a small amount of data is available.
description: 9 pages, 9 figures
Goal Agnostic Planning using Maximum Likelihood Paths in Hypergraph World Models
Creators: name: Robinson, Christopher
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: In this paper, we present a hypergraph--based machine learning algorithm, a datastructure--driven maintenance method, and a planning algorithm based on a probabilistic application of Dijkstra's algorithm. Together, these form a goal agnostic automated planning engine for an autonomous learning agent which incorporates beneficial properties of both classical Machine Learning and traditional Artificial Intelligence. We prove that the algorithm determines optimal solutions within the problem space, mathematically bound learning performance, and supply a mathematical model analyzing system state progression through time yielding explicit predictions for learning curves, goal achievement rates, and response to abstractions and uncertainty. To validate performance, we exhibit results from applying the agent to three archetypal planning problems, including composite hierarchical domains, and highlight empirical findings which illustrate properties elucidated in the analysis.
description: 58 pages, 27 figures, comments
Constraints on Common Envelope Magnetic Fields from Observations of Jets in Planetary Nebulae
Creators: name: Tocknell, James
name: De Marco, Orsola
name: Wardle, Mark
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The common envelope (CE) interaction describes the swallowing of a nearby companion by a growing, evolving star. CEs that take place during the asymptotic giant branch phase of the primary and may lead to the formation of a planetary nebula (PN) with a post-CE close binary in the middle. We have used published observations of masses and kinematics of jets in four post-CE PN to infer physical characteristics of the CE interaction. In three of the four systems studied, Abell 63, ETHOS 1 and the Necklace PN, the kinematics indicate that the jets were launched a few thousand years before the CE and we favour a scenario where this happened before Roche lobe overflow, although better models of wind accretion and wind Roche lobe overflow are needed. The magnetic fields inferred to launch pre-CE jets are of the order of a few Gauss. In the fourth case, NGC 6778, the kinematics indicate that the jets were launched about 3000 years after the CE interaction. Magnetic fields of the order of a few hundreds to a few thousands Gauss are inferred in this case, approximately in line with predictions of post-CE magnetic fields. However, we remark that in the case of this system, it is impossible to find a reasonable scenario for the formation of the two jet pairs observed: the small orbital separation would preclude the formation of even one accretion disk able to supply the necessary accretion rate to cause the observed jets.
description: 9 pages, accepted by MNRAS, Key words: Magnetic Fields, ISM: Jets and Outflows, Planetary Nebulae: Individual: Necklace, Planetary Nebulae: Individual: Abell 63, Planetary Nebulae: Individual: ETHOS 1, Planetary Nebulae: Individual: NGC 6778
Supporting Information: Short and long time drop dynamics on lubricated substrates
Creators: name: Carlson, Andreas
name: Kim, Pilnam
name: Amberg, Gustav
name: Stone, Howard A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Supporting Information: Short and long time drop dynamics on lubricated substrates
JEWEL 2.0.0 - Directions for Use
Creators: name: Zapp, Korinna C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this publication the first official release of the JEWEL 2.0.0 code is presented. JEWEL is a Monte Carlo event generator simulating QCD jet evolution in heavy-ion collisions. It treats the interplay of QCD radiation and re-scattering in a medium with fully microscopic dynamics in a consistent perturbative framework with minimal assumptions. After a qualitative introduction into the physics of JEWEL detailed information about the practical aspects of using the code is given.
description: 17 pages, 14 figures, v2: minor changes
Oligoryzomys griseolus
Creators: name: Musser, Guy G.
name: Carleton, Michael D.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Oligoryzomys
Oligoryzomys griseolus

description: Oligoryzomys griseolus (Osgood, 1912). Field Mus. Nat. Hist. Pubi., Zool. Ser., 10:49. TYPE LOCALITY: Venezuela, Tachira, upper Rio Tachira, west of Paramo de Tama, 6000-7000 ft. DISTRIBUTION: Tachira Andes of W Venezuela and Cordillera Oriental of E Colombia. COMMENTS: As noted by Osgood (1912), this distinctive form contrasts sharply with neighboring populations of O. fulvescens (e.g., navus and tenuipes) and instead resembles O. vegetus of W Panama.
description: Published as part of Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 718, DOI: 10.5281/zenodo.7353098
description: {"references": ["Osgood, W. H. 1912. Mammals from western Venezuela and eastern Colombia. Field Museum of Natural History, Zoological Series, 10: 32 - 67."]}
Grafting Transformer on Automatically Designed Convolutional Neural Network for Hyperspectral Image Classification
Creators: name: Xue, Xizhe
name: Zhang, Haokui
name: Fang, Bei
name: Bai, Zongwen
name: Li, Ying
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Hyperspectral image (HSI) classification has been a hot topic for decides, as hyperspectral images have rich spatial and spectral information and provide strong basis for distinguishing different land-cover objects. Benefiting from the development of deep learning technologies, deep learning based HSI classification methods have achieved promising performance. Recently, several neural architecture search (NAS) algorithms have been proposed for HSI classification, which further improve the accuracy of HSI classification to a new level. In this paper, NAS and Transformer are combined for handling HSI classification task for the first time. Compared with previous work, the proposed method has two main differences. First, we revisit the search spaces designed in previous HSI classification NAS methods and propose a novel hybrid search space, consisting of the space dominated cell and the spectrum dominated cell. Compared with search spaces proposed in previous works, the proposed hybrid search space is more aligned with the characteristic of HSI data, that is, HSIs have a relatively low spatial resolution and an extremely high spectral resolution. Second, to further improve the classification accuracy, we attempt to graft the emerging transformer module on the automatically designed convolutional neural network (CNN) to add global information to local region focused features learned by CNN. Experimental results on three public HSI datasets show that the proposed method achieves much better performance than comparison approaches, including manually designed network and NAS based HSI classification methods. Especially on the most recently captured dataset Houston University, overall accuracy is improved by nearly 6 percentage points. Code is available at: https://github.com/Cecilia-xue/HyT-NAS.
description: 15 pages, 10 figures
Oligoryzomys longicaudatus
Creators: name: Musser, Guy G.
name: Carleton, Michael D.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Oligoryzomys
Oligoryzomys longicaudatus

description: Oligoryzomys longicaudatus (Bennett, 1832). Proc. Zool. Soc. Lond., 1832:2. TYPE LOCALITY: Chile, Valparaiso Prov. (as suggested by Osgood, 1943:143). DISTRIBUTION: NC to S Andes, approximately to 50°S latitude, of Chile and Argentina. SYNONYMS: agilis, amblyrrhynchus, araucanus, commutatus, coppingeri, diminutivus, dumetorum, exiguus, glaphyrus, macrocercus, melaenus, melanizon, mizurus, nigribarbis, pernix, peteroanus, philippii, saltator. COMMENTS: Formerly encompassed most Andean populations of Oligoryzomys (see Cabrera, 1961). Morphometric variation among Chilean populations investigated by Gallardo and Palma (1990), who placed philippii in full synonymy with O. longicaudatus and removed magellanicus to specific status. Relationships and level of divergence from allopatric forms like O. destructor and O. nigripes warrant study (see Carleton and Musser, 1989). Attribution of numerous Philippi (1900) epithets follows Osgood (1943).
description: Published as part of Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 718, DOI: 10.5281/zenodo.7353098
description: {"references": ["Osgood, W. H. 1943. The mammals of Chile. Field Museum of Natural History, Zoological Series, 30: 1 - 268.", "Gallardo, M. H., and E. Palma. 1990. Systematics of Oryzomys longicadatus (Rodentia: Muridae) in Chile. Journal of Mammalogy, 71: 333 - 342.", "Carleton, M. D., and G. G. Musser. 1989. Systematic studies of oryzomyine rodents (Muridae, Sigmodontinae): A synopsis of Microryzomys. Bulletin of the American Museum of Natural History, 191: 1 - 83.", "Philippi, R. A. 1900. Figuras i descripciones de los murideos de Chile. Anales de Museo Nacional de Chile, Zoologie, 14 a: 1 - 70."]}
Sequential locality of graphs and its hypothesis testing
Creators: name: Kawamoto, Tatsuro
name: Kobayashi, Teruyoshi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The adjacency matrix is the most fundamental and intuitive object in graph analysis that is useful not only mathematically but also for visualizing the structures of graphs. Because the appearance of an adjacency matrix is critically affected by the ordering of rows and columns, or vertex ordering, statistical assessment of graphs together with their vertex sequences is important in identifying the characteristic structures of graphs. In this paper, we propose a hypothesis testing framework that assesses how locally vertices are connected to each other along a specified vertex sequence, which provides a statistical foundation for an optimization problem called envelope reduction or minimum linear arrangement. The proposed tests are particularly suitable for moderately small data and formulated based on a combinatorial approach and a block model with intrinsic vertex ordering.
description: 23 pages, 11 figures
Oligoryzomys magellanicus
Creators: name: Musser, Guy G.
name: Carleton, Michael D.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Oligoryzomys
Oligoryzomys magellanicus

description: Oligoryzomys magellanicus (Bennett, 1836). Proc. Zool. Soc. Lond., 1835:191 [1836]. TYPE LOCALITY: Chile, Magallanes Prov., Straits of Magellan, Port Famine. DISTRIBUTION: S Patagonian region of Chile and Argentina, including Tierra del Fuego. COMMENTS: Karyotypic, morphometric, and phallic differention from O. longicaudatus supports the specific recognition of O. magellanicus (Gallardo and Palma, 1990; Gallardo and Patterson, 1985).
description: Published as part of Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 718, DOI: 10.5281/zenodo.7353098
description: {"references": ["Gallardo, M. H., and E. Palma. 1990. Systematics of Oryzomys longicadatus (Rodentia: Muridae) in Chile. Journal of Mammalogy, 71: 333 - 342.", "Gallardo, M. H., and B. D. Patterson. 1985. Chromosomal differences between two nominal subspecies of Oryzomys longicaudatus Bennett. Mammalian Chromosome Newsletter, 25: 49 - 53."]}
Shallow Network Based on Depthwise Over-Parameterized Convolution for Hyperspectral Image Classification
Creators: name: Gao, Hongmin
name: Chen, Zhonghao
name: Li, Chenming
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Recently, convolutional neural network (CNN) techniques have gained popularity as a tool for hyperspectral image classification (HSIC). To improve the feature extraction efficiency of HSIC under the condition of limited samples, the current methods generally use deep models with plenty of layers. However, deep network models are prone to overfitting and gradient vanishing problems when samples are limited. In addition, the spatial resolution decreases severely with deeper depth, which is very detrimental to spatial edge feature extraction. Therefore, this letter proposes a shallow model for HSIC, which is called depthwise over-parameterized convolutional neural network (DOCNN). To ensure the effective extraction of the shallow model, the depthwise over-parameterized convolution (DO-Conv) kernel is introduced to extract the discriminative features. The depthwise over-parameterized Convolution kernel is composed of a standard convolution kernel and a depthwise convolution kernel, which can extract the spatial feature of the different channels individually and fuse the spatial features of the whole channels simultaneously. Moreover, to further reduce the loss of spatial edge features due to the convolution operation, a dense residual connection (DRC) structure is proposed to apply to the feature extraction part of the whole network. Experimental results obtained from three benchmark data sets show that the proposed method outperforms other state-of-the-art methods in terms of classification accuracy and computational efficiency.
Order, criticality and excitations in the extended Falicov-Kimball model
Creators: name: Ejima, S.
name: Kaneko, T.
name: Ohta, Y.
name: Fehske, H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Using exact numerical techniques we investigate the nature of excitonic (electron-hole) bound states and the development of exciton coherence in the one-dimensional half-filled extended Falicov-Kimball model. The ground-state phase diagram of the model exhibits, besides band insulator and staggered orbital ordered phases, an excitonic insulator (EI) with power-law correlations. The criticality of the EI state shows up in the von Neumann entropy. The anomalous spectral function and condensation amplitude provide the binding energy and coherence length of the electron-hole pairs which, on their part, point towards a Coulomb interaction driven crossover from BCS-like electron-hole pairing fluctuations to tightly bound excitons. We show that while a mass imbalance between electrons and holes does not affect the location of the BCS-BEC crossover regime it favors staggered orbital ordering to the disadvantage of the EI. Within the BEC regime the quasiparticle dispersion develops a flat valence-band top in accord with the experimental finding for Ta$_2$NiSe$_5$.
description: 5 pages, 4 figures, final version
Gimme Shelter: Exploring the Role of Shelterbelts in Bridging the Gap Between Nature and Agriculture
Creators: name: van Reenen, Kai
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 330109
subject: Landscape architecture
classificationCode: 410206
subject: Landscape ecology
classificationCode: 300203
subject: Agricultural land planning
classificationCode: 300202
subject: Agricultural land management
classificationCode: 410401
subject: Conservation and biodiversity

description: This thesis entails the design of a regional shelterbelt network aimed at enhancing both agricultural productivity and ecological connectivity. It focuses on creating a system that not only protects and improves crop yields by mitigating wind and improving microclimate conditions but also supports biodiversity by establishing ecological corridors that connect habitats across the landscape. This has resulted in the identification of 41 design principles for the implementation of shelterbelts, with an emphasis on the microclimate performance for cropland agriculture, and performance for ecological networks. In addition, an exemplary regional structure plan, as wel as two detailed designs display the applicability of the principles, as tested (with a Research Through Design method) for the sandy soils of mid-west Limburg (in the Netherlands). Adherence to these principles form the basis for an answer to the main research question: "How can a shelterbelt be designed in a way that contributes to cropland microclimate and ecological networks in Dutch agricultural landscapes?"
Oligoryzomys microtis
Creators: name: Musser, Guy G.
name: Carleton, Michael D.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Oligoryzomys
Oligoryzomys microtis

description: Oligoryzomys microtis (Allen, 1916). Bull. Am. Mus. Nat. Hist., 35:525. TYPE LOCALITY: Brazil, Amazonas, lower Rio Solimôes. DISTRIBUTION: C Brazil south of Rios Solimöes-Amazon, and contiguous lowlands of Peru, Bolivia, Paraguay, and Argentina. SYNONYMS: chaparensis, fornesi, mattogrossae. COMMENTS: Karyotype reported by Gardner and Patton (1976) as Oryzomys longicaudatus variant (2) and by Myers and Carleton (1981) as Oryzomys fornesi.
description: Published as part of Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 718, DOI: 10.5281/zenodo.7353098
description: {"references": ["Gardner, A. L., and J. L. Patton. 1976. Karyotypic variation in oryzomyine rodents (Cricetinae) with comments on chromosomal evolution in the Neotropical cricetine complex. Occasional Papers of the Museum of Zoology, Louisiana State University, 49: 1 - 48.", "Myers, P., and M. D. Carleton. 1981. The species of Oryzomys (Oligoryzomys) in Paraguay and the identity of Azara's \" Rat sixieme ou rat a tarse noir \". Miscellaneous Publications, Museum of Zoology, University of Michigan, 161: 1 - 41."]}
Wigner distribution functions for complex dynamical systems: the emergence of the Wigner-Boltzmann equation
Creators: name: Sels, Dries
name: Brosens, Fons
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The equation of motion for the reduced Wigner function of a system coupled to an external quantum system is presented for the specific case when the external quantum system can be modeled as a set of harmonic oscillators. The result is derived from the Wigner function formulation of the Feynman-Vernon influence functional theory. It is shown how the true self-energy for the equation of motion is connected with the influence functional for the path integral. Explicit expressions are derived in terms of the bare Wigner propagator. Finally, we show under which approximations the resulting equation of motion reduces to the Wigner-Boltzmann equation.
Systematic investigation of wear-induced cold welding in ultrahigh vacuum piezoelectric motors with non-metallic coatings
Creators: name: Ahn, Taemin
name: Song, Sungmin
name: Ham, Ungdon
name: Kim, Tae-Hwan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Piezoelectric motors are widely used in various applications where both precision positioning and miniaturization are required. Either inertial or quasi-static motors are commonly employed because of their high accuracy, which demands consistent sliding friction between moving sliders and their static counterparts for reliable operation. In general, slider wear is unavoidable after long-term use. Especially, the wear often leads to more serious cold welding in vacuum, which also refers to friction welding induced by direct contact between similar metal surfaces. Non-metallic coatings can prevent such unwanted cold welding in ultrahigh vacuum (UHV) applications. However, the practical reliability of available coatings under UHV conditions still remains to be elucidated. Here, we systematically investigate the practical reliability of commonly used UHV-compatible lubricant coatings for piezoelectric motors in vacuum. We demonstrate that polytetrafluoroethylene (PTFE) shows the most reliable long-term operation in vacuum, while other coatings eventually lead to wear-induced cold welding and motor failure. Our finding provides a simple and effective way to improve the long-term performance of UHV piezoelectric motors by coating the slider surface with PTFE.
description: 4 pages, 3 figures. The following article has been accepted by Review of Scientific Instruments. After it is published, it will be found at https://doi.org/10.1063/5.0147344