cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
First order non-Lorentzian fluids, entropy production and linear instabilities
Creators: name: Poovuttikul, Napat
name: Sybesma, Watse
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In this note, we investigate linear instabilities of hydrodynamics with corrections up to first order in derivatives. It has long been known that relativistic (Lorentzian) first order hydrodynamics, with positive local entropy production, exhibits unphysical instabilities. We extend this analysis to fluids with Galilean and Carrollian boost symmetries. We find that the instabilities occur in all cases, except for fluids with Galilean boost symmetry combined with the choice of macroscopic variables called Eckart frame. We also present a complete linearised analysis of the full spectrum of first order Carrollian hydrodynamics. Furthermore, we show that even in a fluid without boost symmetry present, instabilities can occur. These results provide evidence that the unphysical instabilities are symptoms of first order hydrodynamics, rather than a special feature of Lorentzian fluids.
description: 9 pages of introduction and summary + 19 pages of technical details + 2 pages of appendices
Rural Cooperatives Magazine, March/April 2016
Creators: name: Lister, Genevieve
name: Rahm, Charlie
name: Hogeland, Julie A.
name: Jacob, Sushil
name: Lister, Genevieve
name: Rahm, Charlie
name: Hogeland, Julie A.
name: Jacob, Sushil
Publisher: name: Unknown
Year: 2016
Subjects: Agribusiness
Community/Rural/Urban Development

description: Features- Easy Does It; New dairy shed boosts production, reduces environmental impact; Farming Smart; Legacy of Leadership; Congressional Co-op Business Caucus formed; Managing through uncertainty
On the non-abelian Radon transform
Creators: name: Eskin, Gregory
Publisher: name: arXiv
Year: 2004
Subjects: subject: Analysis of PDEs (math.AP)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: We consider the inverse problem of the recovery of the gauge field in R^2 modulo gauge transformations from the non-abelian Radon transform.A global uniqueness theorem is proven for the case when the gauge field has a compact support.
description: 25 pages
Additional file 4 of Comparison of two techniques used in routine care for the treatment of inflammatory macular oedema, subconjunctival triamcinolone injection and intravitreal dexamethasone implant: medical and economic importance of this randomized controlled trial
Creators: name: Couret, Chloé
name: Poinas, Alexandra
name: Volteau, Christelle
name: Valery-Pierre Riche
name: Marie-Laure Le Lez
name: Marie-Hélène Errera
name: Creuzot-Garcher, Catherine
name: Baillif, Stéphanie
name: Kodjikian, Laurent
name: Ivan, Catherine
name: Kergaradec, Laurence Le Jumeau De
name: Chiffoleau, Anne
name: Jobert, Alexandra
name: Jaulin, Julie
name: Biron, Laetitia
name: Hervouet, Elisabeth
name: Weber, Michel
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Science Policy

description: Additional file 4. TRIOZ informed consent.
DDI Tools Catalogue: A Sharing Platform for Everyone
Creators: name: Andias Wira-Alam
Publisher: name: Zenodo
Year: 2013

description: In recent years the use of the Data Documentation Initiative (DDI) metadata formats has spread across research communities. To date, many DDI developers from different countries have created tools to help active and prospective DDI users to understand and implement the specification. We are pleased to present the DDI Tools Catalogue, a platform for sharing tools among DDI developers, DDI users, DDI prospective users, and others. Currently, there are 46 DDI tools registered in the Catalogue. Among those, 30 tools are under a Freeware License. In terms of DDI Codebook and Lifecycle support, there are 5 tools that support DDI 1.x, 8 tools for DDI 2.0, 15 tools for DDI 2.1, 21 tools for DDI 3.0, and 12 tools for DDI 3.1. Our aim is to make the DDI Tools Catalogue a useful resource not only for current developers but also for prospective developers who are interested in building tools and submitting them to the Catalogue. We also encourage researchers, archivists, data librarians, and others to investigate the Catalogue to identify tools to meet their specific documentation needs. We are confident that in coming years there will be significant growth in the number of DDI tools available.
Epidemics with containment measures
Creators: name: Bianconi, Ginestra
name: Krapivsky, Pavel L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We propose a tractable epidemic model that includes containment measures. In the absence of containment measures, the epidemics spread exponentially fast whenever the infectivity rate is positive, $λ>0$. The containment measures are modeled by considering a time-dependent modulation of the bare infectivity $λ$ leading to effective infectivity that decays in time for each infected individual, mimicking for instance the combined effect of the asymptomatic onset of the disease, testing policies and quarantine. We consider a wide range of temporal kernels for effective infectivity and we investigate the effect of the considered containment measures. We find that not all kernels are able to push the epidemic dynamics below the epidemic threshold, with some containment measures only able to reduce the rate of the exponential growth of newly infected individuals. We also propose a pandemic model caused by a growing number of separated foci.
description: (15 pages, 6 figures)
Additional file 2 of Evaluation of deep and shallow learning methods in chemogenomics for the prediction of drugs specificity
Creators: name: Benoit Playe
name: Stoven, Veronique
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Pharmacology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences

description: Additional file 2. Principles and results of several promising methods that explore sophisticated molecule and protein encodings tested in the present work, but that did not lead to improvements in prediction performance.
Rural Cooperatives Magazine, May/June 2016
Creators: name: Bau, Margaret
name: Giszpenc, Noemi
name: Danforth, Andrew
name: Thibault, Leah B.
name: Solano, Alexis
name: Hines, Twanna A.
name: Bau, Margaret
name: Giszpenc, Noemi
name: Danforth, Andrew
name: Thibault, Leah B.
name: Solano, Alexis
name: Hines, Twanna A.
Publisher: name: Unknown
Year: 2016
Subjects: Agribusiness
Community/Rural/Urban Development

description: Features- A Century of Service; Fresh Perspectives; Study show major impact of ag co-ops on Nebraska economy; Building Blocks; A Force for Stronger Co-ops; A Road Up; Market-Driven Aid Has Big Impact
In-orbit calibration status of the Insight-HXMT
Creators: name: Li, Xiaobo
name: Song, Liming
name: Li, Xufang
name: Tan, Ying
name: Yang, Yanji
Publisher: name: arXiv
Year: 2019
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: As China's first X-ray astronomical satellite, Insight-HXMT (Hard X-ray Modulation Telescope) successfully launched on Jun 15, 2017. It performs timing and spectral studies of bright sources to determine their physical parameters. HXMT carries three main payloads onboard: the High Energy X-ray telescope (HE, 20-250 keV, NaI(Tl)/CsI(Na)), the Medium Energy X-ray Telescope (ME, 5-30 keV, Si-Pin) and the Low Energy X-ray telescope (LE, 1-15 keV, SCD). In orbit, we have used the radioactive sources, activated lines, the fluorescence line, and Cas A to calibrate the gain and energy resolution of the payloads. The Crab pulsar was adopted as the primary effective area calibrator and an empirical function was found to modify the simulated effective areas. The absolute timing accuracy of HXMT is about 100us from the TOA of Crab Pulsar.
Additional file 3 of Comparison of two techniques used in routine care for the treatment of inflammatory macular oedema, subconjunctival triamcinolone injection and intravitreal dexamethasone implant: medical and economic importance of this randomized controlled trial
Creators: name: Couret, Chloé
name: Poinas, Alexandra
name: Volteau, Christelle
name: Valery-Pierre Riche
name: Marie-Laure Le Lez
name: Marie-Hélène Errera
name: Creuzot-Garcher, Catherine
name: Baillif, Stéphanie
name: Kodjikian, Laurent
name: Ivan, Catherine
name: Kergaradec, Laurence Le Jumeau De
name: Chiffoleau, Anne
name: Jobert, Alexandra
name: Jaulin, Julie
name: Biron, Laetitia
name: Hervouet, Elisabeth
name: Weber, Michel
Publisher: name: figshare
Year: 2020
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Marine Biology
subject: Cancer
subject: Science Policy

description: Additional file 3. TRIOZ study schedule.
Modeling diffusion in thin $2D$-layers separated by a semi-permeable membrane
Creators: name: Bobrowski, Adam
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: Functional Analysis (math.FA)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: Motivated by models of signaling pathways in B lymphocytes, which have extremely large nuclei, we study the question of how reaction-diffusion equations in thin $2D$ domains may be approximated by diffusion equations in regions of smaller dimensions. In particular, we study how transmission conditions featuring in the approximating equations become integral parts of the limit master equation. We device a scheme which, by appropriate rescaling of coefficients and finding a common reference space for all Feller semigroups involved, allows deriving the form of the limit equation formally. The results obtained, expressed as convergence theorems for the Feller semigroups, may also be interpreted as a weak convergence of underlying stochastic processes.
description: 8 figures
A model of an expanding giant that swallowed planets for the eruption of V838 Monocerotis
Creators: name: Retter, Alon
name: Marom, Ariel
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In early 2002 V838 Monocerotis had an extraordinary outburst whose nature is still unclear. The optical light curve showed at least three peaks and imaging revealed a light echo around the object - evidence for a dust shell which was emitted several thousand years ago and now reflecting light from the eruption. Spectral analysis suggests that the object was relatively cold throughout the event, which was characterized by an expansion to extremely large radii. We show that the three peaks in the light curve have a similar shape and thus it seems likely that a certain phenomenon was three times repeated. Our suggestion that the outburst was caused by the expansion of a red giant, followed by the successive swallowing of three relatively massive planets in close orbits, supplies a simple explanation to all observed peculiarities of this intriguing object.
description: 5 pages, 1 LaTex file, 2 .eps figures, accepted for publication in MNRAS
Rural Cooperatives Magazine, July/August 2016
Creators: name: Ehmke, Tanner
name: Abernathy, Donna
name: Jalloh, Oumourumana
name: Scott, Denis
name: Reynolds, Bruce J.
name: Campbell, Dan
name: Moriarty, Meegan
name: Berry, Heather
name: Ehmke, Tanner
name: Abernathy, Donna
name: Jalloh, Oumourumana
name: Scott, Denis
name: Reynolds, Bruce J.
name: Campbell, Dan
name: Moriarty, Meegan
name: Berry, Heather
Publisher: name: Unknown
Year: 2016
Subjects: Agribusiness
Community/Rural/Urban Development
Food Security and Poverty

description: Features- Grain cooperatives are bracing for a challenging second half of 2016; Stronger. Together.; "Cooperatives Build" theme for Cooperative Month 2016; Co-ops and community development efforts have played changing roles in addressing rural poverty; For Farm and Country; Berry, Hollins win top co-op communication honors
Quantum interference effects in particle transport through square lattices
Creators: name: Cuansing, E.
name: Nakanishi, H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the transport of a quantum particle through square lattices of various sizes by employing the tight-binding Hamiltonian from quantum percolation. Input and output semi-infinite chains are attached to the lattice either by diagonal point to point contacts or by a busbar connection. We find resonant transmission and reflection occuring whenever the incident particle's energy is near an eigenvalue of the lattice alone (i.e., the lattice without the chains attached). We also find the transmission to be strongly dependent on the way the chains are attached to the lattice.
description: 4 pages, 6 figures, submitted to Phys. Rev. E
A new theory of tensor-scalar gravity coupled to Aharonov-Bohm electrodynamics
Creators: name: Minotti, F.
name: Modanese, G.
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: Tensor-scalar theories of gravitation are commonly employed as extensions of General Relativity that allow to describe a much wider phenomenology. They are also naturally generated as low energy limit of higher-dimensional or unified theories, and the gravitational scalar components can represent quantum corrections to the Einstein theory. The coupling of the scalars to an e.m. field does not introduce any relevant new physics if the e.m. action has the usual Maxwell form, implying a vanishing trace of the e.m. energy-momentum tensor. In the case of the extended Aharonov-Bohm electrodynamics some interesting new situations are possible, which in this work are analyzed in the gravitational weak-field approximation and for a basic version of tensor-scalar gravity involving only a Brans-Dicke field plus another scalar. Since the Aharonov-Bohm theory differs from Maxwell theory only in the presence of anomalous sources with local violation of charge conservation, which is thought to be possible only at a quantum level, the resulting formal framework can be useful to model interactions between gravitation and physical systems with macroscopic quantization. The theory contains some unknown parameters, the most important being the VEV $ψ_0$ of the second gravitational scalar and the level $γ$ of violation of local charge conservation in the e.m. sector. An attempt is done to relate these parameters to some experimental constraints. However, there is presently much space left for uncertainty.
description: 24 pages. Two references added and one corrected
A System for Generating Non-Uniform Random Variates using Graphene Field-Effect Transistors
Creators: name: Tye, Nathaniel Joseph
name: Meech, James Timothy
name: Bilgin, Bilgesu Arif
name: Stanley-Marbell, Phillip
Publisher: name: arXiv
Year: 2020
Subjects: subject: Emerging Technologies (cs.ET)
subject: Applied Physics (physics.app-ph)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We introduce a new method for hardware non-uniform random number generation based on the transfer characteristics of graphene field-effect transistors (GFETs) which requires as few as two transistors and a resistor (or transimpedance amplifier). The method could be integrated into a custom computing system to provide samples from arbitrary univariate distributions. We also demonstrate the use of wavelet decomposition of the target distribution to determine GFET bias voltages in a multi-GFET array. We implement the method by fabricating multiple GFETs and experimentally validating that their transfer characteristics exhibit the nonlinearity on which our method depends. We use the characterization data in simulations of a proposed architecture for generating samples from dynamically-selectable non-uniform probability distributions. Using a combination of experimental measurements of GFETs under a range of biasing conditions and simulation of the GFET-based non-uniform random variate generator architecture, we demonstrate a speedup of Monte Carlo integration by a factor of up to 2$\times$. This speedup assumes the analog-to-digital converters reading the outputs from the circuit can produce samples in the same amount of time that it takes to perform memory accesses.
description: 9 pages, 12 figures
On non-gaussianities in single-field inflation
Creators: name: Creminelli, Paolo
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the impact of higher dimension operators in the inflaton Lagrangian on the non-gaussianity of the scalar spectrum. These terms can strongly enhance the effect without spoiling slow-roll, though it is difficult to exceed f_NL ~ 1, because the scale which suppresses the operators cannot be too low, if we want the effective field theory description to make sense. In particular we explicitly calculate the 3-point function given by an higher derivative interaction of the form (\nablaϕ)^4, which is expected to give the most important contribution. The angular dependence of the result turns out to be quite different from the minimal case without higher dimension operators.
description: 10 pages
Qualitative Data in the Context of Mixed Methods Research: The Concept of Research Data Centre for Education (RDC Education)
Creators: name: Bambey, Doris
Publisher: name: Zenodo
Year: 2013

description: Against the background of the triangulation of methods, qualitative micro-genetic approaches such as video studies have become significantly more relevant in educational research in the last ten years. At the same time a desideratum is evident in the field of prepared and re-usable qualitative research data. Accordingly a great task is still the development of specific metadata standards for this type of objects as well as a reliable way of dealing the particular problems relating to data protection in the case of AV research data. FDZ Bildung place particular emphasis on audio-visual and auditive data and their numerical-textual assessment and documentation materials such as transcripts, narrative descriptions of observed settings, codings and ratings. This contribution aims to show how FDZ Bildung is dealing with the requirements of bringing together all instruments and data of a study, thus offering researchers an efficient access to the entire quantitative and qualitative output at the level of a study. The concept takes into account the results of interviews with educational researchers which systematically were carried out in 2012.
Streaming convolutional neural networks for end-to-end learning with multi-megapixel images
Creators: name: Pinckaers, Hans
name: van Ginneken, Bram
name: Litjens, Geert
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Due to memory constraints on current hardware, most convolution neural networks (CNN) are trained on sub-megapixel images. For example, most popular datasets in computer vision contain images much less than a megapixel in size (0.09MP for ImageNet and 0.001MP for CIFAR-10). In some domains such as medical imaging, multi-megapixel images are needed to identify the presence of disease accurately. We propose a novel method to directly train convolutional neural networks using any input image size end-to-end. This method exploits the locality of most operations in modern convolutional neural networks by performing the forward and backward pass on smaller tiles of the image. In this work, we show a proof of concept using images of up to 66-megapixels (8192x8192), saving approximately 50GB of memory per image. Using two public challenge datasets, we demonstrate that CNNs can learn to extract relevant information from these large images and benefit from increasing resolution. We improved the area under the receiver-operating characteristic curve from 0.580 (4MP) to 0.706 (66MP) for metastasis detection in breast cancer (CAMELYON17). We also obtained a Spearman correlation metric approaching state-of-the-art performance on the TUPAC16 dataset, from 0.485 (1MP) to 0.570 (16MP). Code to reproduce a subset of the experiments is available at https://github.com/DIAGNijmegen/StreamingCNN.
description: In review
Input-to-state stability methods for nonlinear and network systems
Creators: name: Liu, Tengfei
Publisher: name: The Australian National University
Year: 2011
Subjects: subject: QA402.35.L58 2011
subject: Nonlinear systems
subject: Nonlinear control theory
subject: Adaptive control systems
subject: System analysis

description: Ubiquitous uncertainties exist in control systems. The concept of input-to-state stability (ISS) is one way to describe how uncertainties influence systems stability. The main purpose of this thesis is to develop some new ISS-based tools to design feedback control laws that are capable of counteracting specific uncertainties in nonlinear and network systems. In Part II, ISS cyclic-small-gain theorems are developed as a basic criterion to analyze the stability and robustness of nonlinear and network systems composed of interacting ISS subsystems. Part III presents a dissipativity-based switching adaptive control methodology, with which a control system could counteract uncertainties by appropriately switching the controller parameters. Based on the cyclic-small-gain theorem, the switching adaptive control law can be implemented in a decentralized manner for uncertain network systems. In Part IV, we propose cyclic-small-gain based tools for robust control design of nonlinear systems with disturbed measurements. With the proposed design tools, the controller can drive the control error of a nonlinear system to the level of the measurement disturbance. The efforts in Part V are devoted to quantized control of nonlinear systems. We will consider different quantizers and introduce new quantized control structures for nonlinear systems.
Parahypsibius Gasiorek 2024, gen. nov.
Creators: name: Gąsiorek, Piotr
name: SØrensen, Martin V.
name: Lillemark, Marie Rathcke
name: TØttrup, Frederik LeerhØi Anders P.
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Tardigrada
Eutardigrada
Parachela
Hypsibiidae
Parahypsibius

description: Parahypsibius Gąsiorek gen. nov.
urn:lsid:zoobank.org:act: 4516C76C-F0EB-443F-A809- C29EB43F38FB.
Type species: Hypsibius scabropygus Cuénot, 1929. Diagnosis: Hypsibiids with Ramazzottius -like claws and rigid buccal tube bent posteriorly. Only posterior bars may be present. AISMs asymmetrical, dorsal AISM shorter and higher than ventral, with prominent apex and less evident caudal processes. Pharynx with two granular macroplacoids. Rudimentary elliptical sensory organs present on head. Cuticular sculpturing well developed as protuberances at least in the dorsoposterior body portion, or protuberances cover an entire dorsum. Eggs laid within the exuviae, with granulated chorion.
Etymology: From Greek para - = near, close + Hypsibius, referring to the close relationship between these genera.
Composition: P. biscuitiformis (Bartoš, 1960) comb. nov.; P. calcaratus (Bartoš, 1935) comb. nov.; P. camelopardalis (Ramazzotti and Maucci, 1983) comb. nov.; P. macrocalcaratus
(Beasley, 1988) comb. nov.; P. ragonesei (Binda and Pilato, 1985) comb. nov.; P. roanensis (Nelson and McGlothlin, 1993) comb. nov.; P. scabropygus (Cuénot, 1929) comb. nov.; P. stiliferus (Abe, 2004) comb. nov.; and P. runae (Bartoš, 1941) comb. nov. (uncertain, type specimens are unusable due to the crystallization of mounting medium, thus the transfer is done based on simplistic original description).
Geographic distribution: Essentially Holarctic. Among all the species included in the genus, only H. scabropygus was recorded outside of the Holarctic region—from the Palaeotropics (McInnes 1994). The conspecificity of European and African populations has yet to be demonstrated.
Differential diagnosis: The new genus is compared with all two-macroplacoid hypsibiid genera having a rigid buccal tube, and with Acutuncus Pilato and Binda, 1997 (in Pilato and Binda 1997b) due to the similar mode of egg deposition in the Acutuncus mariae group (Vecchi et al. 2023). Table 3 shows the differences between all relevant taxa.
description: Published as part of Gąsiorek, Piotr, SØrensen, Martin V., Lillemark, Marie Rathcke & TØttrup, Frederik LeerhØi Anders P., 2024, Too rough to be a Hypsibius: multipopulation survey accentuates the phylogenetic position and apomorphies of Hypsibius scabropygus (Eutardigrada: Hypsibiidae), pp. 1-18 in Zoological Journal of the Linnean Society (Zool. J. Linn. Soc.) (Zool. J. Linn. Soc.) 202 (4) on pages 7-8, DOI: 10.1093/zoolinnean/zlae160, http://zenodo.org/record/14825615
SRDA Community Platform Development
Creators: name: Chih-Jen Liang
Publisher: name: Zenodo
Year: 2013

description: The Survey Research Data Archive (SRDA) of Academia Sinica has Taiwan's largest collection of survey data. The collection comes from both the academics and government agencies. Since its establishment in 1994, SRDA has become an important resource for teaching and research. In order to facilitate resource sharing among researchers and to reduce the time and energy individual researchers have to put in for similar and complex analysis tasks, we propose to build an SRDA platform for learning and sharing in quantitative research methods. The platform has two objectives. First, it allows SRDA members to share programs, written by themselves, by uploading it, assigning it to one or more purpose Track and describing its contents and purposes in words. Other members can search for a specific program by using the purpose Track and by searching in the descriptions. Those who contribute programs will manage their own files, so that only the most recent versions are available. Second, it allows members to post comments or questions, whether specific to a program or not, and all members can respond. Members and visitors can also learn by searching in these questions and responses.
Directed and elliptic flow of charged pions and protons in Pb+Pb collisions at 40 and 158A GeV
Creators: name: The NA49 Collaboration
Publisher: name: arXiv
Year: 2003
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Directed and elliptic flow measurements for charged pions and protons are reported as a function of transverse momentum, rapidity, and centrality for 40 and 158A GeV Pb + Pb collisions as recorded by the NA49 detector. Both the standard method of correlating particles with an event plane, and the cumulant method of studying multiparticle correlations are used. In the standard method the directed flow is corrected for conservation of momentum. In the cumulant method elliptic flow is reconstructed from genuine 4, 6, and 8-particle correlations, showing the first unequivocal evidence for collective motion in A+A collisions at SPS energies.
description: To be published in Phys. Rev. C, 37 pages, 29 figures, version accepted for publication, contains now a weblink to data shown in the figures: See http://na49info.cern.ch/na49/Archives/Data/FlowWebPage/
Optimizing the Role of Nurse Case Management in Reducing Heart Failure Readmissions : (Home health based care)
Creators: name: Feng, Yuli
Publisher: name: The University of British Columbia
Year: 2023

description: Aims: Nurse case managers (NCMs) are essential in supporting people living with heart failure (HF) in the community. This Scholarly Practice Advancement Research Project (SPAR) provides evidence-based knowledge to optimize the role of nurse case management (NCM) in reducing HF readmissions in the home health setting. I conducted a review of the literature on the impact of NCM on HF readmissions to determine areas of practice and effective strategies for managing HF. My goal is to help close the theory-practice gap in case management practice and advance its role in reducing HF readmissions and caring for people living with HF in the community.
Microscopic View on Short-Range Wetting at the Free Surface of the Binary Metallic Liquid Gallium-Bismuth: An X-ray Reflectivity and Square Gradient Theory Study
Creators: name: Huber, Patrick
name: Shpyrko, Oleg
name: Pershan, Peter S.
name: DiMasi, Elaine
name: Ocko, Ben M.
name: Deutsch, Moshe
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present an x-ray reflectivity study of wetting at the free surface of the binary liquid metal gallium-bismuth (Ga-Bi) in the region where the bulk phase separates into Bi-rich and Ga-rich liquid phases. The measurements reveal the evolution of the microscopic structure of wetting films of the Bi-rich, low-surface-tension phase along different paths in the bulk phase diagram. A balance between the surface potential preferring the Bi-rich phase and the gravitational potential which favors the Ga-rich phase at the surface pins the interface of the two demixed liquid metallic phases close to the free surface. This enables us to resolve it on an Angstrom level and to apply a mean-field, square gradient model extended by thermally activated capillary waves as dominant thermal fluctuations. The sole free parameter of the gradient model, i.e. the so-called influence parameter, $κ$, is determined from our measurements. Relying on a calculation of the liquid/liquid interfacial tension that makes it possible to distinguish between intrinsic and capillary wave contributions to the interfacial structure we estimate that fluctuations affect the observed short-range, complete wetting phenomena only marginally. A critical wetting transition that should be sensitive to thermal fluctuations seems to be absent in this binary metallic alloy.
description: RevTex4, twocolumn, 15 pages, 10 figures
On coproducts of operator $\mathcal{A}$-systems
Creators: name: Chatzinikolaou, Alexandros
Publisher: name: arXiv
Year: 2022
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 47L25, 46L07, 46L09

description: Given a unital $\boldsymbol{C}^{*}$-algebra $\mathcal{A}$, we prove the existence of the coproduct of two faithful operator $\mathcal{A}$-systems. We show that we can either consider it as a subsystem of an amalgamated free product of $\boldsymbol{C}^{*}$-algebras, or as a quotient by an operator system kernel. We introduce a universal $\boldsymbol{C}^{*}$-algebra for operator $\mathcal{A}$-systems and prove that in the case of the coproduct of two operator $\mathcal{A}$-systems, it is isomorphic to the amalgamated over $\mathcal{A}$, free product of their respective universal $\boldsymbol{C}^{*}$-algebras. Also, under the assumptions of hyperrigidity for operator systems, we can identify the $\boldsymbol{C}^{*}$-envelope of the coproduct with the amalgamated free product of the $\boldsymbol{C}^{*}$-envelopes. We consider graph operator systems as examples of operator $\mathcal{A}$-systems and prove that there exist graph operator systems whose coproduct is not a graph operator system, it is however a dual operator $\mathcal{A}$-system. More generally, the coproduct of dual operator $\mathcal{A}$-systems is always a dual operator $\mathcal{A}$-system. We show that the coproducts behave well with respect to inductive limits of operator systems.
description: 31 pages, revised and reviewed version, Theorems 4.11 and 5.5 improved in clarity
Aloe welwitschii Klopper & Gideon F. Sm. 2013, nom. nov.
Creators: name: Grace, Olwen M.
name: Klopper, Ronell R.
name: Smith, Gideon F.
name: Crouch, Neil R.
name: Figueiredo, Estrela
name: Rønsted, Nina
name: Van Wyk, Abraham E.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Xanthorrhoeaceae
Aloe
Aloe welwitschii

description: 1. Aloe welwitschii Klopper & Gideon F.Sm., nom. nov.
 Haworthia angolensis Baker (1878: 263). Chortolirion angolense (Baker) Berger (1908: 73). Type:— ANGOLA. Huilla District: flowered November 1859, F.M.J. Welwitsch 3756 (holotype BM000911693!).
 Etymology: —Since the name Aloe angolensis Baker (1878: 263) already exists, this combination is not available for Chortolirion angolensis. The new name commemorates Friedrich Martin Josef Welwitsch (1806–1872), who collected the type specimen and is estimated to have made over 10,000 botanical collections in Angola, representing around 5,000 species (Albuquerque et al. 2009).
description: Published as part of Grace, Olwen M., Klopper, Ronell R., Smith, Gideon F., Crouch, Neil R., Figueiredo, Estrela, Rønsted, Nina & Van Wyk, Abraham E., 2013, A revised generic classification for Aloe (Xanthorrhoeaceae subfam. Asphodeloideae), pp. 7-14 in Phytotaxa 76 (1) on page 12, DOI: 10.11646/phytotaxa.76.1.2, http://zenodo.org/record/5066711
A volume-ish theorem for the Jones polynomial of alternating knots
Creators: name: Dasbach, Oliver
name: Lin, Xiao-Song
Publisher: name: arXiv
Year: 2004
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M25

description: The Volume conjecture claims that the hyperbolic Volume of a knot is determined by the colored Jones polynomial. The purpose of this article is to show a Volume-ish theorem for alternating knots in terms of the Jones polynomial, rather than the colored Jones polynomial: The ratio of the Volume and certain sums of coefficients of the Jones polynomial is bounded from above and from below by constants. Furthermore, we give experimental data on the relation of the growths of the hyperbolic volume and the coefficients of the Jones polynomial, both for alternating and non-alternating knots.
description: 14 pages
Expansion of the Odum Institute Dataverse Network: Forming Partnerships, Harnessing Infrastructures, and increasing Preservation of Research Data
Creators: name: Crabtree, Jonathan
name: Kellam, Lynda
Publisher: name: Zenodo
Year: 2013

description: In this poster, we will summarize the expansion of the Odum Institute Dataverse Network (DVN) to support new inter-institutional and inter-disciplinary collaborations. The Odum Institute and the North Carolina Online Collection of Knowledge and Scholarship (NC DOCKS) group have formed an inter-institutional collaboration to address data management needs of researchers within NC DOCKS schools. This collaboration allows researchers, assisted by institutional library staff, to deposit data into Dataverses hosted by the Odum Institute Dataverse Network (DVN) thereby ensuring research data is properly preserved and accessible. Odum is also expanding the Odum DVN to support multi-disciplinary research data. Odum recently formed a partnership with the Orofacial Pain: Prospective Evaluation and Risk Assessment (OPPERA) study investigators. This partnership will allow the Odum data archive staff, in collaboration with the OPPERA team, to deposit phenotype and genotype data into the DVN as a preservation strategy. These expansions of the DVN show the growing role of collaboration in data management and preservation and the opportunities to harness current infrastructures and grow partnerships instead of creating institutional and discipline-based silos.
An idealized physical model for the severe convective storm environmental sounding
Creators: name: Chavas, Daniel R
name: Dawson, Daniel T
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: This work develops a theoretical model for steady thermodynamic and kinematic profiles for severe convective storm environments, building off of the two-layer static energy framework developed in Agard and Emanuel (2017). The model is phrased in terms of static energy, and it allows for independent variation of the boundary layer and free troposphere separated by a capping inversion. An algorithm is presented to apply the model to generate a sounding for numerical simulations of severe convective storms, and the model is compared and contrasted with that of Weisman and Klemp. The model is then fit to a case-study sounding associated with the 3 May 1999 tornado outbreak, and its potential utility is demonstrated via idealized numerical simulation experiments. A long-lived supercell is successfully simulated with the historical sounding but not the analogous theoretical sounding. Two types of example experiments are then performed that do simulate a long-lived supercell: 1) a semi-theoretical experiment in which a portion of the theoretical sounding is modified to match the real sounding (low-level moisture); 2) a fully-theoretical experiment in which a model physical parameter is modified (free-tropospheric relative humidity). Overall, the construction of this minimal model is flexible and amenable to additional modifications as needed. The model offers a novel framework that may be useful for testing how severe convective storms depend on the vertical structure of the hydrostatic environment, as well as for linking variability in these environments to the physical processes that produce them within the climate system.
description: 21 pages, 7 figures, accepted in Journal of the Atmospheric Sciences 2020-10-26
A method for Agnostic Reconstruction of low frequency Gravitational Wave signals
Creators: name: Μπενέτου, Ερατώ Αγγελική Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2024
Subjects: Βαρυτικά Κύματα
Ανάλυση δεδομένων
Ανακατασκευή σήματος
Gravitational Waves
Data Analysis
Signal Reconstruction

description: The Laser Interferometer Space Antenna is a future spaceborne gravitational wave (GW) observatory. LISA is going to measure a huge volume of overlapping signals, which means that there is a need for methods capable of disentangling and capturing the sources and at the same time measuring their parameters . This thesis proposes novel analysis techniques for future LISA data. Starting with simpler sinusoidal wavepackets, we combine them in order to fit more complicated waveform signals. We use methods such as Bayesian Analysis and Reversible Jump Markov Chain Monte Carlo in order to estimate both the number and the parameters of each wavepacket that are necessary to fit the GW signatures. We test our methods with synthetic data.
description: Το Laser Interferometer Space Antenna (LISA) είναι ένα μελλοντικό διαστημικό παρατηρητήριο βαρυτικών κυμάτων (GW). Το LISA πρόκειται να μετρήσει έναν τεράστιο όγκο επικαλυπτόμενων σημάτων, πράγμα που σημαίνει ότι υπάρχει ανάγκη για μεθόδους ικανές να αποσυνθέσουν και να καταγράψουν τις πηγές και ταυτόχρονα να μετρήσουν τις παραμέτρους τους. Η παρούσα διατριβή προτείνει νέες τεχνικές ανάλυσης για τα μελλοντικά δεδομένα του LISA. Ξεκινώντας με απλούστερα ημιτονοειδή κυματοπακέτα, τα συνδυάζουμε προκειμένου να προσαρμόσουμε πιο πολύπλοκα σήματα. Χρησιμοποιούμε μεθόδους όπως η Μπεϋζιανή Ανάλυση και το Reversible Jump Markov Chain Monte Carlo για να εκτιμήσουμε τόσο τον αριθμό όσο και τις παραμέτρους κάθε κυματοπακέτου που είναι απαραίτητα για την προσαρμογή των σημάτων των βαρυτικών κυμάτων. Δοκιμάζουμε τις μεθόδους μας με προσομοιωμένα δεδομένα.
An Interdisciplinary Repository for Research on Social Dimensions of Emerging Technologies: Challenges and Opportunities
Creators: name: Granda, Peter
Publisher: name: Zenodo
Year: 2013

description: By 2015, National Science Foundation Centers for Nanotechnology in Society in the United States, as well as other institutes and researchers conducting social dimensions research, will have spent ten years collecting qualitative and quantitative data and developing analytic and methodological tools for examining the ethical, legal and social impacts (ELSI) of nano-science and emerging technologies. Much of this interdisciplinary inquiry extends beyond quantitative approaches with an established practice of reuse and verification to include research and pedagogical tools for use in planning, informal learning, and decision-making settings. This poster will report on activities associated with a National Leadership Planning Grant that the UMass Amherst Libraries received from the Institute of Museum and Library Services to study what infrastructure, funding, and partnerships will be necessary to develop standards to carry out data archiving for such digital objects. A central activity of this grant will be a dedicated planning workshop, scheduled for June 2013, to discuss the technical and administrative requirements for implementing an interdisciplinary repository for Nano ELSI data.
Declination dependence of the cosmic-ray flux at extreme energies
Creators: name: Gorbunov, D. S.
name: Troitsky, S. V.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the large-scale distribution of the arrival directions of the highest energy cosmic rays observed by various experiments. Despite clearly insufficient statistics, we find a deficit of cosmic rays at energies higher than 10^{20} eV from a large part of the sky around the celestial North Pole. We speculate on possible explanations of this feature.
description: 5 pages, 4 figures; v2: 11 pages, 4 figures, title changed (to avoid confusion with the Southern hemisphere), analysis extended, more data included, results unchanged; to be published in JCAP
Asymmetric environment induces protein-like relaxation in spin chain
Creators: name: Valente, Daniel
name: Werlang, Thiago
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Proteins are aminoacid chains that diffusively fold or unfold depending on the thermal and chemical environmental conditions. While sophisticated models account for detailed aspects of real proteins, finding traits that unify protein dynamics to general open chains relaxation is still challenging. The principle of minimal frustration represents a key step towards this goal, revealing a fundamental link between proteins and spin glasses. Here, we search for the emergence of protein-like relaxation in open spin chains by going beyond the validity domain of the minimal frustration principle as to focus on the role of system-environment interactions rather than on frustration in the system's Hamiltonian. We find that strong asymmetries between the couplings of each spin to its immediate surroundings imply close similarities to protein folding and unfolding dynamics. Namely, an asymmetric bath can (i) block the system from finding its minimum energy state, even in the complete absence of energetic frustration in the system's Hamiltonian, and (ii) excite the system resembling the well-known distinction between thermal and chemical denaturations.
description: 5 pages, 2 figures
Kundt Gravitational Waves Coupled with a Non-Noetherian Conformal Scalar Field
Creators: name: Sánchez, Pedro A.
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Type N spacetimes of the Kundt class are presented as solutions to Einstein's equations sourced by a real scalar field whose equation of motion is conformally invariant and that generalizes the standard conformal scalar field. The specific spacetimes considered model gravitational waves with uniform and totally geodesic wave fronts, propagating in a maximally symmetric background, and are characterized by the value of their constant scalar curvature and by the so-called wave profile function. All subclasses of such spacetimes are analyzed. It is shown that the scalar field solutions generically divide into two branches, of which one has a strikingly different behavior from that of the standard conformal case. The scalar field contributes to the equation satisfied by the wave profile function by adding new singular terms. Closed form and mode solutions for the wave profile function are found for different scenarios. The resulting energy-momentum tensor has a null eigenvector, but is more general than the pure radiation type usually coupled with this kind of spacetimes.
description: 14 pages + Refs., 3 figures; To appear in PRD; Added: Kundt waves classes diagram, eq. (50), references, and other minor changes to match journal version
Particle acceleration with anomalous pitch angle scattering in 3D separator reconnection
Creators: name: Borissov, Alexei
name: Neukirch, Thomas
name: Kontar, Eduard
name: Threlfall, James
name: Parnell, Clare
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Understanding how the release of stored magnetic energy contributes to the generation of non-thermal high energy particles during solar flares is an important open problem in solar physics. Magnetic reconnection plays a fundamental role in the energy release and conversion processes taking place during flares. A common approach for investigating particle acceleration is to use test particles in fields derived from magnetohydrodynamic (MHD) simulations of reconnection. These MHD simulations use anomalous resistivities that are much larger than the Spitzer resistivity based on Coulomb collisions. The processes leading to enhanced resistivity should also affect the test particles. We explore the link between resistivity and particle orbits building on a previous study using a 2D MHD simulation of magnetic reconnection. This paper extends the previous investigation to a 3D magnetic reconnection configuration and to study the effect on test particle orbits. We carried out orbit calculations using a 3D MHD simulation of separator reconnection. We use the relativistic guiding centre approximation including stochastic pitch angle scattering. The effects of varying the resistivity and the models for pitch angle scattering on particle orbit trajectories, final positions, energy spectra, final pitch angle distribution, and orbit duration are all studied in detail. Pitch angle scattering widens collimated beams of orbit trajectories, allowing orbits to access previously unaccessible field lines; this causes final positions to spread to topological structures that were previously inaccessible. Scattered orbit energy spectra are found to be predominantly affected by the level of anomalous resistivity, with the pitch angle scattering model only playing a role in isolated cases. Scattering is found to play a crucial role in determining the pitch angle and orbit duration distributions.
description: 18 pages, 10 figures, accepted to Astronomy & Astrophysics