cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Four-mode squeezed states: two-field quantum systems and the symplectic group $\mathrm{Sp}(4,\mathbb{R})$
Creators: name: Colas, Thomas
name: Grain, Julien
name: Vennin, Vincent
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct the four-mode squeezed states and study their physical properties. These states describe two linearly-coupled quantum scalar fields, which makes them physically relevant in various contexts such as cosmology. They are shown to generalise the usual two-mode squeezed states of single-field systems, with additional transfers of quanta between the fields. To build them in the Fock space, we use the symplectic structure of the phase space. For this reason, we first present a pedagogical analysis of the symplectic group $\mathrm{Sp}(4,\mathbb{R})$ and its Lie algebra, from which we construct the four-mode squeezed states and discuss their structure. We also study the reduced single-field system obtained by tracing out one of the two fields. This procedure being easier in the phase space, it motivates the use of the Wigner function which we introduce as an alternative description of the state. It allows us to discuss environmental effects in the case of linear interactions. In particular, we find that there is always a range of interaction coupling for which decoherence occurs without substantially affecting the power spectra (hence the observables) of the system.
description: 38 pages without appendices (total 49 pages), matches published version in EPJC
A Machine Learning and Computer Vision Approach to Rapidly Optimize Multiscale Droplet Generation
Creators: name: Siemenn, Alexander E.
name: Shaulsky, Evyatar
name: Beveridge, Matthew
name: Buonassisi, Tonio
name: Hashmi, Sara M.
name: Drori, Iddo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Generating droplets from a continuous stream of fluid requires precise tuning of a device to find optimized control parameter conditions. It is analytically intractable to compute the necessary control parameter values of a droplet-generating device that produces optimized droplets. Furthermore, as the length scale of the fluid flow changes, the formation physics and optimized conditions that induce flow decomposition into droplets also change. Hence, a single proportional integral derivative controller is too inflexible to optimize devices of different length scales or different control parameters, while classification machine learning techniques take days to train and require millions of droplet images. Therefore, the question is posed, can a single method be created that universally optimizes multiple length-scale droplets using only a few data points and is faster than previous approaches? In this paper, a Bayesian optimization and computer vision feedback loop is designed to quickly and reliably discover the control parameter values that generate optimized droplets within different length-scale devices. This method is demonstrated to converge on optimum parameter values using 60 images in only 2.3 hours, 30x faster than previous approaches. Model implementation is demonstrated for two different length-scale devices: a milliscale inkjet device and a microfluidics device.
description: Published as a journal article in ACS Applied Materials & Interfaces
The uniqueness of observatory publications
Creators: name: Ellegaard, O.
name: Dorch, S. B. F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Digital Libraries (cs.DL)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Observatory publications comprise the work of local astronomers from observatories around the world and are traditionally exchanged between observatories through libraries. However, large collections of observatory publications seem to be rare; or at the least rarely digitally described or accessible on the Internet. Notable examples to the contrary are the Woodman Astronomical Library at Wisconsin-Madison and the Dudley Observatory in Loudonville, New York both in the US. Due to the irregularities in receiving material, the collections are generally often incomplete both with respect to the observatories included as well as volumes. In order to assess the unique properties of the collections, we summarize and compare observatories present in our own as well as the collections from the Woodman Library and the Dudley Observatory.
description: Published in the proceedings of IAU Symposium 367, Education and Heritage in the Era of Big Data in Astronomy
Newton like equations for the radiating particle: the non relativistic limit
Creators: name: González, Daniel E. Lluis
name: Delgado, Alejandro O. Salinas
name: de Oca, y Alejandro Cabo Montes
Publisher: name: arXiv
Year: 2021
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences
subject: 46F10

description: A broad class of forces, P, is identified, for which the Abraham-Lorentz-Dirac (ALD) and Newton-like equations have solutions in common. Moreover, these solutions do not present pre-acceleration or escape into infinity (runaway behavior). Any continuous or piecewise continuous force can be represented in terms of functions belonging to this class P. It was also argued that the set of common solutions of both sets of equations is wider, it was proved that these solutions could be formulated in terms of generalized functions. The existence of such generalized functions motions is explicitly demonstrated for the relevant example of the instantaneously applied constant force, for which the respective solution of the ALD equation exhibits lack of causality and runaway motion. In this case, the expressions for the position and velocity of the particle are formulated in terms of generalized functions of time, having only a point support at the time that the force is applied. Thus, both, the velocity and the position are discontinuous at the instant that the force was applied. The solution for a particle moving between the plates of a capacitor reproduces the one obtained by A. Yaghjian from his discussion for extended particles. This outcome suggests a possible link or equivalence between both studies. A solution, common to the Newton-like and the ALD equations, for a constant homogeneous magnetic field is also presented. The extension of the results obtained to a relativistic context will be studied in future works.
description: 16 pages, 4 figures
The Radar Echo Telescope for Cosmic Rays: Pathfinder Experiment for a Next-Generation Neutrino Observatory
Creators: name: Prohira, S.
name: de Vries, K. D.
name: Allison, P.
name: Beatty, J.
name: Besson, D.
name: Connolly, A.
name: Dasgupta, P.
name: Deaconu, C.
name: De Kockere, S.
name: Frikken, D.
name: Hast, C.
name: Santiago, E. Huesca
name: Kuo, C. -Y.
name: Latif, U. A.
name: Lukic, V.
name: Meures, T.
name: Mulrey, K.
name: Nam, J.
name: Nozdrina, A.
name: Oberla, E.
name: Ralston, J. P.
name: Sbrocco, C.
name: Stanley, R. S.
name: Torres, J.
name: Toscano, S.
name: Broeck, D. Van den
name: van Eijndhoven, N.
name: Wissel, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The Radar Echo Telescope for Cosmic Rays (RET-CR) is a recently initiated experiment designed to detect the englacial cascade of a cosmic-ray initiated air shower via in-ice radar, toward the goal of a full-scale, next-generation experiment to detect ultra high energy neutrinos in polar ice. For cosmic rays with a primary energy greater than 10 PeV, roughly 10% of an air-shower's energy reaches the surface of a high elevation ice-sheet ($\gtrsim$2 km) concentrated into a radius of roughly 10 cm. This penetrating shower core creates an in-ice cascade many orders of magnitude more dense than the preceding in-air cascade. This dense cascade can be detected via the radar echo technique, where transmitted radio is reflected from the ionization deposit left in the wake of the cascade. RET-CR will test the radar echo method in nature, with the in-ice cascade of a cosmic-ray initiated air-shower serving as a test beam. We present the projected event rate and sensitivity based upon a three part simulation using CORSIKA, GEANT4, and RadioScatter. RET-CR expects $\sim$1 radar echo event per day.
title: Neocybernetic Posthumanism and the AI Imaginary: Artificial Communication in Kim Stanley Robinson’s Aurora
Creators: name: Clarke, Bruce
Publisher: name: Electronic Book Review
Year: 2021

description: Bruce Clarke focuses transhumanism through the dialects of a neocybernetic systems theory (NST). As Clarke explores the dynamics of a NST, he outlines important components of the AI Imaginary—or, the theoretical and mediated discussions of intelligent technologies--in order to explore how machines, humans, and systems can work together. Specifically, he presents Kim Stanley Robinson’s novel Aurora (2015), as an exception to the AI Imaginary in its representation of “a solidarity that regathers rather than alienates human and machine beings.”
The homeotic and segmentation genes interact differently with the polycomb-group genes in Drosophila melanogaster
Creators: name: McKeon, Joanie
Publisher: name: University of British Columbia
Year: 2010

description: Members of the Polycomb (Pc)-group of genes have similar phenotypes, including posterior transformation of embryonic and adult segments, sensitivity to changes in dosage of the bithorax and Antennapedia complexes, and enhancement of Polycomb phenotypes in transheterozygotes. However, genetic and molecular evidence suggests that not all members of the Pc-group have equivalent functions. I examined the protein distribution of the three homeotic genes Ultrabithorax, Antennapedia, and Sex combs reduced, and the segmentation gene engrailed to directly assay Pc-group function. The timing, severity, tissue-specificity, and pattern of gene expression differed in each mutant. These results support the hypothesis that different members of the Pc-group have different functions. My results indicate that it is likely that there is at least one pathway in which Polycomb and extra sex combs are at the head, and that some Pc-group genes function in subpathways. I have also shown that some members of the Pc-group function in regulating the segmentation as well as the homeotic genes and therefore have a more general role in development.
Two-loop QED corrections to Bhabha scattering
Creators: name: Becher, Thomas
name: Melnikov, Kirill
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We obtain a simple relation between massless and massive scattering amplitudes in gauge theories in the limit where all kinematic invariants are large compared to particle masses. We use this relation to derive the two-loop QED corrections to large-angle Bhabha scattering.
description: 15 pages; minor changes; version to appear in JHEP
Converged ab initio calculations of heavy nuclei
Creators: name: Miyagi, T.
name: Stroberg, S. R.
name: Navrátil, P.
name: Hebeler, K.
name: Holt, J. D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We propose a novel storage scheme for three-nucleon (3N) interaction matrix elements relevant for the normal-ordered two-body approximation used extensively in ab initio calculations of atomic nuclei. This scheme reduces the required memory by approximately two orders of magnitude, which allows the generation of 3N interaction matrix elements with the standard truncation of $E_{\rm 3max}=28$, well beyond the previous limit of 18. We demonstrate that this is sufficient to obtain the ground-state energy of $^{132}$Sn converged to within a few MeV with respect to the $E_{\rm 3max}$ truncation.In addition, we study the asymptotic convergence behavior and perform extrapolations to the un-truncated limit. Finally, we investigate the impact of truncations made when evolving free-space 3N interactions with the similarity renormalization group. We find that the contribution of blocks with angular momentum $J_{\rm rel}>9/2$ to the ground-state energy is dominated by a basis-truncation artifact which vanishes in the large-space limit, so these computationally expensive components can be neglected. For the two sets of nuclear interactions employed in this work, the resulting binding energy of $^{132}$Sn agrees with the experimental value within theoretical uncertainties. This work enables converged ab initio calculations of heavy nuclei.
description: 16 pages, 11 figures. Appendix is added. Published version
title: Better with the Purpose In: or, the Focus of Writing to Reach All of Your Audience
Creators: name: Larsen, Deena
Publisher: name: Electronic Book Review
Year: 2021

description: In “Better with the Purpose In: or, the Focus of Writing to Reach All of Your Audience,” Deena Larsen responds in a riPOSTe to Hannah Ackerman’s essay on sound elements in electronic literature, “Better with the Sound On” (ebr October 2021). Larsen approaches Ackerman’s essay from the position of a “dual writer” in exposition and exploration, exploring the question of audience in e-lit, particularly the imagined audience as one that is able-bodied and who may have specific embodied experiences of literature. In order to explore “multiple audiences with the same message,” including by tapping into multiple senses, Larsen draws upon Kate Pullinger’s work Letter to an Unknown Soldier and Amira Hanafi’s A Dictionary of the Revolution.
Sensitivity analysis for the anomalous $W^+W^-γ$ couplings at the LHeC and the FCC-he
Creators: name: Spor, S.
name: Köksal, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the anomalous $W^+W^-γ$ couplings in performing the production of the W-pair through the process $e^- p\,\rightarrow\,e^-γ^*γ^* p\,\rightarrow\,e^-W^+W^-p$ at the Large Hadron electron Collider (LHeC) and the Future Circular Collider-hadron electron (FCC-he). We examine the pure hadronic, the semi-leptonic and the pure leptonic decay channels of the produced W-pair. We assume the center-of-mass energies of $\sqrt{s}=1.30$ and $1.98$ TeV and the integrated luminosities of 10-100 fb$^{-1}$ for the LHeC and the center-of-mass energies of $\sqrt{s}=3.46$ and $5.29$ TeV and the integrated luminosities of 100-2000 fb$^{-1}$ for the FCC-he. The best limits at 95$\%$ confidence level obtained for the anomalous couplings $Δκ_γ$ and $λ_γ$ are $Δκ_γ=[-0.00208; 0.00206]$ and $λ_γ=[-0.00174; 0.00834]$. By comparing these limits with the experimental limits, we present the potentials of the process and future $ep$ colliders.
description: 21 pages, 5 figures, 6 tables
Supplementary Materials from Archaeogenomic analysis of Chesapeake Atlantic sturgeon illustrates shaping of its populations in recovery from severe overexploitation
Creators: name: Przelomska, Natalia
name: Balazik, Matthew T.
name: Lin, Audrey
name: Reeder Myers, Leslie
name: Rick, Torben C.
name: Kistler, Logan
Publisher: name: The Royal Society
Year: 2024
Subjects: classificationCode: 3105
subject: Genetics
subject: FOS: Biological sciences

description: Supplement comprising extended Methods and Supplementary Figures and Tables
Parallel Projection---An Improved Return Mapping Algorithm for Finite Element Modeling of Shape Memory Alloys
Creators: name: Kang, Ziliang
name: Tortorelli, Daniel A.
name: James, Kai A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Numerical Analysis (math.NA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We present a novel finite element analysis of inelastic structures containing Shape Memory Alloys (SMAs). Phenomenological constitutive models for SMAs lead to material nonlinearities, that require substantial computational effort to resolve. Finite element analysis methods, which rely on Gauss quadrature integration schemes, must solve two sets of coupled differential equations: one at the global level and the other at the local, i.e. Gauss point level. In contrast to the conventional return mapping algorithm, which solves these two sets of coupled differential equations separately using a nested Newton procedure, we propose a scheme to solve the local and global differential equations simultaneously. In the process we also derive closed-form expressions used to update the internal/constitutive state variables, and unify the popular closest-point and cutting plane methods with our formulas. Numerical testing indicates that our method allows for larger thermomechanical loading steps and provides increased computational efficiency, over the standard return mapping algorithm.
Simulation-Based Impact of Connected Vehicles in Platooning Mode on Travel Time, Emissions and Fuel Consumption
Creators: name: Validi, Aso
name: Olaverri-Monreal, Cristina
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Several approaches have been presented during the last decades to reduce carbon pollution from transportation. One example is the use of platooning mode. This paper considers data obtained from daily trips to investigate the impact of platooning on travel time, emissions of CO2, CO, NO2 and HC and fuel consumption on a road network in Upper Austria. For this purpose, we studied fuel combustion-based engines relying on the extension of the 3DCoAutoSim simulation platform. The obtained results showed that the platooning mode not only increased driving efficiency but also decreased the total emissions by reducing fuel consumption.
description: 6 pages, 8 figures, 4 tables
Parametrizations of triaxial deformation and E2 transitions of the wobbling band
Creators: name: Shimizu, Yoshifumi R.
name: Shoji, Takuya
name: Matsuzaki, Masayuki
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: By the very definition the triaxial deformation parameter $γ$ is related to the expectation values of the K=0 and K=2 components of the intrinsic quadrupole tensor operator. On the other hand, using the same symbol "$γ$", various different parametrizations of triaxial deformation have been employed, which are suitable for various types of the mean-field potentials. It is pointed out that the values of various "$γ$" are quite different for the same actual triaxial deformation, especially for the large deformation; for example, the difference can be almost a factor two for the case of the triaxial superdeformed bands recently observed in the Hf and Lu nuclei. In our previous work, we have studied the wobbling band in Lu nuclei by using the microscopic framework of the cranked Nilsson mean-field and the random phase approximation, where the most serious problem is that the calculated B(E2) value is about factor two smaller. It is shown that the origin of this underestimation can be mainly attributed to the small triaxial deformation; if is used the same triaxial deformation as in the analysis of the particle-rotor model, the calculated B(E2) increases and gives correct magnitude compared with the experimental data.
description: 10 pages, 9 figures
A Search for Planets Transiting the M Dwarf Debris Disk Host, AU Microscopii
Creators: name: Hebb, Leslie
name: Petro, Larry
name: Ford, Holland C.
name: Ardila, David R.
name: Toledo, Ignacio
name: Minniti, Dante
name: Golimowski, David A.
name: Clampin, Mark
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present high cadence, high precision multi-band photometry of the young, M1Ve, debris disk star, AU Microscopii. The data were obtained in three continuum filters spanning a wavelength range from 4500Åto 6600Å, plus H$α$, over 28 nights in 2005. The lightcurves show intrinsic stellar variability due to starspots with an amplitude in the blue band of 0.051 magnitudes and a period of 4.847 days. In addition, three large flares were detected in the data which all occur near the minimum brightness of the star. We remove the intrinsic stellar variability and combine the lightcurves of all the filters in order to search for transits by possible planetary companions orbiting in the plane of the nearly edge-on debris disk. The combined final lightcurve has a sampling of 0.35 minutes and a standard deviation of 6.8 millimags (mmag). We performed Monte Carlo simulations by adding fake transits to the observed lightcurve and find with 95% significance that there are no Jupiter mass planets orbiting in the plane of the debris disk on circular orbits with periods, P $\le 5$ days. In addition, there are no young Neptune-like planets (with radii 2.5$\times$ smaller than the young Jupiter) on circular orbits with periods, P $\le 3$ days.
description: accepted to MNRAS
Mulching for healthy tree seedlings - Mulczowanie dla zdrowych sadzonek
Creators: name: Philippe, Van Lerberghe
name: Borek Robert
name: Wydra, M.
name: Jędrejek Anna
Publisher: name: Zenodo
Year: 2019
Subjects: mulching
weeding
organic mulches
mulczowanie
odchwaszczanie
mulcz organiczny

description: Skuteczne sadzenie drzew zależy od osłabienia konkurencji o zasoby wodne i substancje odżywcze ze strony otaczającej je roślinności. Mulczowanie jest jedną z najlepszych praktyk jakie rolnik może zastosować w celu zasadzenia zdrowych drzew.
Neural Transfer Learning for Repairing Security Vulnerabilities in C Code
Creators: name: Chen, Zimin
name: Kommrusch, Steve
name: Monperrus, Martin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In this paper, we address the problem of automatic repair of software vulnerabilities with deep learning. The major problem with data-driven vulnerability repair is that the few existing datasets of known confirmed vulnerabilities consist of only a few thousand examples. However, training a deep learning model often requires hundreds of thousands of examples. In this work, we leverage the intuition that the bug fixing task and the vulnerability fixing task are related and that the knowledge learned from bug fixes can be transferred to fixing vulnerabilities. In the machine learning community, this technique is called transfer learning. In this paper, we propose an approach for repairing security vulnerabilities named VRepair which is based on transfer learning. VRepair is first trained on a large bug fix corpus and is then tuned on a vulnerability fix dataset, which is an order of magnitude smaller. In our experiments, we show that a model trained only on a bug fix corpus can already fix some vulnerabilities. Then, we demonstrate that transfer learning improves the ability to repair vulnerable C functions. We also show that the transfer learning model performs better than a model trained with a denoising task and fine-tuned on the vulnerability fixing task. To sum up, this paper shows that transfer learning works well for repairing security vulnerabilities in C compared to learning on a small dataset.
Protecting trees against wildlife damage: assessing the options - Ochrona drzew przed dzikimi zwierzętami: ocena dostępnych możliwości
Creators: name: Philippe, Van Lerberghe
name: Borek Robert
name: Wydra, M.
name: Jędrejek Anna
Publisher: name: Zenodo
Year: 2019
Subjects: trees protection
tres browsing
rubbing
bark gnawing
mesh gaurds
tree guards
ochrona drzew
zgryzanie drzew
osmykiwanie
spałowanie
siatki ochronne
osłonki drzew

description: Dzika przyroda jest nieodłącznym aspektem życia na polach. Zwierzęta, starając się zaspokoić naturalne potrzeby (pożywienia i reprodukcji), mogą jednak wyrządzić szkody i zniszczenia drzew i krzewów.
Rolnicy powinni zaznajomić się z dostępnymi możliwościami ochrony, by stosować je odpowiednio i wybrać te, które zapewnią najlepszą ochronę ich plantacjom.
Iterative Design of Gestures During Elicitation: Understanding the Role of Increased Production
Creators: name: Danielescu, Andreea
name: Piorkowski, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Previous gesture elicitation studies have found that user proposals are influenced by legacy bias which may inhibit users from proposing gestures that are most appropriate for an interaction. Increasing production during elicitation studies has shown promise moving users beyond legacy gestures. However, variety decreases as more symbols are produced. While several studies have used increased production since its introduction, little research has focused on understanding the effect on the proposed gesture quality, on why variety decreases, and on whether increased production should be limited. In this paper, we present a gesture elicitation study aimed at understanding the impact of increased production. We show that users refine the most promising gestures and that how long it takes to find promising gestures varies by participant. We also show that gestural refinements provide insight into the gestural features that matter for users to assign semantic meaning and discuss implications for training gesture classifiers.
description: 25 pages
Effects of whole body vibration and backrest angle on perceived mental workload and performance
Creators: name: Jalilian, Hamed
name: Gorjizadeh, Omid
name: Najafi, Kamran
name: Falahati, Mohsen
Publisher: name: IfADo - Leibniz Research Centre for Working Environment and Human Factors, Dortmund
Year: 2021
Subjects: whole body vibration
backrest angle
mental workload
performance
mental task

description: Mental Workload (MWL) and human performance are widely contributing concepts in human factors. The objective of the current study is to investigate the perceived MWL and human performance during whole-body vibration (WBV) exposure while seated at different backrest angles. Nineteen healthy male participants completed both the NASA-TLX and rating scale mental effort (RSME) after performing two difficulty levels of computerized dual tasks. The participants’ performance was measured in these conditions while seated with a backrest angle of 100 and 120 degrees and exposed to WBV (intensity: 0.5 m/s2; frequency 3-20 Hz) for 5 minutes. No significant effect on performance or perceived MWL (p<0.05) was found when changes were made to the backrest angles. Exposure to WBV under two backrest angles increased mental demand (p=0.04), effort (p=0.03) and frustration (p=0.03) and negatively affected human performance (p<0.05). The present study showed that exposure to WBV could be an important variable for designing work environments that require a high level of performance and mental demand while seated. However, the findings exhibited no association between inclining backrest angle and human performance or perceived MWL.
description: EXCLI Journal; 20:Doc400; ISSN 1611-2156
Operationalizing InSAR and Pixel Offset Time Series Methodologies for Landslide Monitoring
Creators: name: Williams, Forrest
Publisher: name: Zenodo
Year: 2021

description: Time-series InSAR techniques may be able to greatly increase our landslide monitoring capabilities, but in many landslide-prone areas, high rates of temporal decorrelation due to landslide movement and the presence of steep, vegetated terrain limit the utility of many InSAR techniques. Recent advances in both time-series InSAR techniques and pixel offset tracking techniques have however begun to overcome these limitations. In this study, we use an SBAS InSAR technique that highlights local deformation and an SBAS-like pixel offset tracking technique to remotely monitor over 800 landslides within a 10,000 km2 region of New Zealand’s North Island. Even though landslide movements rates in our study area range from 0.01 to 10 m/yr and the entirety of study area suffers from high rates of temporal decorrelation, we have found that our analysis framework is capable of monitoring both landslide activity states and movement rates. The results of this analysis are now being used to estimate the sediment contribution of landslides to local rivers, and to help prioritize the administration of conservation funding that seeks to improve the health of New Zealand’s rivers. In addition to our results, our reliance on open-source software and globally available remote sensing data ensure that our analysis can also be efficiently conducted in other areas that experience high rates of temporal decorrelation.
Phases of QCD, Polyakov Loop and Quasiparticles
Creators: name: Weise, Wolfram
name: Ratti, Claudia
name: Roessner, Simon
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: QCD thermodynamics is studied using a model which combines Polyakov loop dynamics with spontaneous chiral symmetry breaking and its restoration (the PNJL model). The input is fixed entirely by pure-gauge lattice QCD results and by pion properties in vacuum. Successful comparisons with results from thermal lattice QCD are achieved, including extrapolations to finite quark chemical potential. The phase diagram and selected susceptibilities for two quark flavors are investigated with inclusion of diquark degrees of freedom.
description: 9 pages, 8 figures. To appear in Proceedings YKIS2006, Prog. Theor. Phys. Suppl. (Kyoto)
Computable and operationally meaningful multipartite entanglement measures
Creators: name: Beckey, Jacob L.
name: Gigena, N.
name: Coles, Patrick J.
name: Cerezo, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Multipartite entanglement is an essential resource for quantum communication, quantum computing, quantum sensing, and quantum networks. The utility of a quantum state, $|ψ\rangle$, for these applications is often directly related to the degree or type of entanglement present in $|ψ\rangle$. Therefore, efficiently quantifying and characterizing multipartite entanglement is of paramount importance. In this work, we introduce a family of multipartite entanglement measures, called Concentratable Entanglements. Several well-known entanglement measures are recovered as special cases of our family of measures, and hence we provide a general framework for quantifying multipartite entanglement. We prove that the entire family does not increase, on average, under Local Operations and Classical Communications. We also provide an operational meaning for these measures in terms of probabilistic concentration of entanglement into Bell pairs. Finally, we show that these quantities can be efficiently estimated on a quantum computer by implementing a parallelized SWAP test, opening up a research direction for measuring multipartite entanglement on quantum devices.
description: 5+15 pages. 3+4 figures. Small errors in supplementary material corrected
Strong first-order phase transition in a rotating neutron star core and the associated energy release
Creators: name: Zdunik, J. L.
name: Bejger, M.
name: Haensel, P.
name: Gourgoulhon, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We calculate the energy release associated with a strong first-order phase transition, from normal phase N to an "exotic" superdense phase S, in a rotating neutron star. Such a phase transition, accompanied by a density jump rho_N --> rho_S, is characterized by rho_S/rho_N > 3/2(1+P_0/rho_N c^2), where P_0 is the pressure, at which phase transition occurs. Configurations with small S-phase cores are then unstable and collapse into stars with large S-phase cores. The energy release is equal to the difference in mass-energies between the initial (normal) configuration and the final configuration containing an S-phase core, total stellar baryon mass and angular momentum being kept constant. The calculations of the energy release are based on precise numerical 2-D calculations. Polytropic equations of state (EOSs) as well as realistic EOS with strong first-order phase transition due to kaon condensation are used. For polytropic EOSs, a large parameter space is studied. For a fixed "overpressure", dP, defined as the relative excess of central pressure of collapsing metastable star over the pressure of equilibrium first-order phase transition, the energy release E_rel does not depend on the stellar angular momentum. It coincides with that for nonrotating stars with the same dP. Therefore, results of 1-D calculations of E_rel(dP) for non-rotating stars can be used to predict, with very high precision, the outcome of much harder to perform 2-D calculations for rotating stars with the same dP. This result holds also for dP_min < dP < 0, corresponding to phase transitions with climbing over the energy barrier separating metastable N-phase configurations from those with an S-phase core. Such phase transitions could be realized in the cores of newly born, hot, pulsating neutron stars.
description: 9 pages, 12 figures, submitted to A&A
Fluctuating local field approach to free energy of 1D molecules with strong collective electronic correlations
Creators: name: Lyakhova, Yana S.
name: Stepanov, Evgeny A.
name: Rubtsov, Alexey N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The impact of leading collective electronic fluctuations on a free energy of a prototype 1D model for molecular systems is considered within the recently developed Fluctuating Local Field (FLF) approach. The FLF method is a non-perturbative extension of a mean-field theory, where a self-consistent effective constant field is replaced by a fluctuating one. Integrating the fluctuating field out numerically exactly allows to account for collective electronic fluctuations mediated by this field without any assumptions on their magnitude, degree of nonlinearity, etc. Using a half-filled Hubbard ring as a benchmark system, we find that the FLF method noticeably improves a mean-field estimation for the free energy, in particular below the mean-field Neél temperature. We further demonstrate that the mean-field result can be even more improved introducing a multi-mode FLF scheme that additionally takes into account sub-leading fluctuations. Possible applications for the thermodynamics of real molecules are also discussed.
description: 8 pages, 2 figures
Dressing and Wrapping
Creators: name: Kotikov, A. V.
name: Lipatov, L. N.
name: Rej, A.
name: Staudacher, M.
name: Velizhanin, V. N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We prove that the validity of the recently proposed dressed, asymptotic Bethe ansatz for the planar AdS/CFT system is indeed limited at weak coupling by operator wrapping effects. This is done by comparing the Bethe ansatz predictions for the four-loop anomalous dimension of finite-spin twist-two operators to BFKL constraints from high-energy scattering amplitudes in N=4 gauge theory. We find disagreement, which means that the ansatz breaks down for length-two operators at four-loop order. Our method supplies precision tools for multiple all-loop tests of the veracity of any yet-to-be constructed set of exact spectral equations. Finally we present a conjecture for the exact four-loop anomalous dimension of the family of twist-two operators, which includes the Konishi field.
description: 20 pages, 2 tables, no figures; v2: references added, conjecture on exact four-loop twist-two result stated
The Green polynomials via vertex operators
Creators: name: Jing, Naihuan
name: Liu, Ning
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Algebra (math.QA)
subject: Combinatorics (math.CO)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: An iterative formula for the Green polynomial is given using the vertex operator realization of the Hall-Littlewood function. Based on this, (1) a general combinatorial formula of the Green polynomial is given; (2) several compact formulas are given for Green's polynomials associated with upper partitions of length $\leq 3$ and the diagonal lengths $\leq 3$; (3) a Murnaghan-Nakayama type formula for the Green polynomial is obtained; and (4) an iterative formula is derived for the bitrace of the finite general linear group $G$ and the Iwahori-Hecke algebra of type $A$ on the permutation module of $G$ by its Borel subgroup.
description: 19 pages; updated version
Supplementary material document from Personalised in silico model for radiation-induced pulmonary fibrosis
Creators: name: Ioannou, Eleftherios
name: Hadjicharalambous, Myrianthi
name: Malai, Anastasia
name: Papageorgiou, Elisavet
name: Peraticou, Antri
name: Katodritis, Nicos
name: Vomvas, Dimitrios
name: Vavourakis, Vasileios
Publisher: name: The Royal Society
Year: 2024
Subjects: classificationCode: 310908
subject: Animal physiology - biophysics
classificationCode: 320802
subject: Human biophysics

description: This documents includes complete information on the patients cohort as well as detailed explanations on all aspects of the methodology and analysis
Electron magnetotransport in GaAs/AlGaAs superlattices with weak and strong inter-well coupling
Creators: name: Smrcka, L.
name: Goncharuk, N. A.
name: Svoboda, P.
name: Vasek, P.
name: Krupko, Yu.
name: Wegscheider, W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We report on magnetotransport measurements in two MBE-grown GaAs/AlGaAs superlattices formed by wide and narrow quantum wells and thin Si-doped barriers subject to tilted magnetic fields. It has been shown that illumination of the strongly coupled superlattice with narrow wells leads to reduction of its dimensionality from the 3D to 2D. The illumination-induced transition is revealed by remarkable change of magnetoresistance curves as compared to those measured before illumination. The experimental data along with tight-binding model calculations indicate that the illumination not only enhances the electron concentration but also suppresses the electron tunneling through the barriers.
description: 3 pages, 3 figures, elsart/PHYEAUTH macros; presented on the LDSD 2007 Conference in the Caribbean Archipelago San Andres, Colombia. To be published as a special issue of Microelectronics Journal (Elsevier)
Terguride stimulates locomotor activity at 2 months but not 10 months after 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine treatment of common marmosets
Creators: name: Lange, Klaus W.
name: Löschmann, P. A.
name: Wachtel, H.
name: Horowski, R.
name: Jähnig, P.
name: Jenner, P.
name: Marsden, C. D.
Publisher: name: Universität Regensburg
Year: 1992
Subjects: subject: 150 Psychologie
subject: 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine
subject: Animals
subject: Antiparkinson Agents/pharmacology
subject: Callithrix
subject: Disease Models, Animal
subject: Dopamine Agents/pharmacology
subject: Female
subject: Lisuride/pharmacology
subject: Male
subject: Motor Activity/drug effects
subject: Parkinson Disease, Secondary/drug therapy
subject: Time Factors

description: The mixed dopamine (DA) agonist/antagonist terguride acts as a DA antagonist on normosensitive receptors but shows DA agonistic properties at supersensitive DA receptors. Such a compound could offer an alternative to the treatment of Parkinson's disease with indirect or direct DA agonists. The present study compares the actions of terguride, 4-12 mg/kg i.p., in naive common marmosets with its effects in animals rendered parkinsonian by administration of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP), 2 months or 10 months previously, in order to test its antiparkinsonian efficacy. Terguride reduced locomotor activity in naive common marmosets, similar to its effects in rodents and in line with the DA antagonistic activity of the compound. In marmosets treated with MPTP 2 months previously and exhibiting pronounced behavioural motor deficits, terguride stimulated locomotor activity, showing DA agonistic properties under these conditions. In contrast, the locomotor activity of animals that had recovered from MPTP treatment 10 months previously was not altered by terguride. It is concluded that terguride has anti-akinetic efficacy in this primate model of Parkinson's disease. In addition, terguride offers a unique opportunity to differentiate, pharmacologically, the extent of dopaminergic recovery from MPTP treatment in this primate species.
Effect of fluctuations in pH on the availability of K, Mg, Cu, Mn, Zn, and Fe
Creators: name: Ulansky, Sherry M.
Publisher: name: University of British Columbia
Year: 2010

description: An exploratory study was conducted to determine the effect of fluctuations in pH on the availability of K, Mg, Cu, Mn, Zn, and Fe. Two soils were selected for study which had differing buffering capacities based on their clay and organic matter contents. The pH of soil samples was manipulated with either HC1 or CaC03 and then allowed to incubate. Mineralogical changes, as well as, chemical analysis indicated that fluctuations in pH may have a moderating effect on mineral weathering and precipitation reactions which in turn influences nutrient release, fixation, and availability. Changes in organic matter content with fluctuating pH appear to influence the behaviour of the trace metals and may be responsible for the development of pH-dependent charge CEC.
Two stages for visual object tracking
Creators: name: Chen, Fei
name: Zhang, Fuhan
name: Wang, Xiaodong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Siamese-based trackers have achived promising performance on visual object tracking tasks. Most existing Siamese-based trackers contain two separate branches for tracking, including classification branch and bounding box regression branch. In addition, image segmentation provides an alternative way to obetain the more accurate target region. In this paper, we propose a novel tracker with two-stages: detection and segmentation. The detection stage is capable of locating the target by Siamese networks. Then more accurate tracking results are obtained by segmentation module given the coarse state estimation in the first stage. We conduct experiments on four benchmarks. Our approach achieves state-of-the-art results, with the EAO of 52.6$\%$ on VOT2016, 51.3$\%$ on VOT2018, and 39.0$\%$ on VOT2019 datasets, respectively.
description: 2021 International Conference on Intelligent Computing, Automation and Applications (ICAA)
Statistics of Core Lifetimes in Numerical Simulations of Turbulent, Magnetically Supercritical Molecular Clouds
Creators: name: Galván-Madrid, Roberto
name: Vázquez-Semadeni, Enrique
name: Kim, Jongsoo
name: Ballesteros-Paredes, Javier
name: .
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present measurements of the mean dense core lifetimes in numerical simulations of magnetically supercritical, turbulent, isothermal molecular clouds, in order to compare with observational determinations. "Prestellar" lifetimes (given as a function of the mean density within the cores, which in turn is determined by the density threshold n_thr used to define them) are consistent with observationally reported values, ranging from a few to several free-fall times. We also present estimates of the fraction of cores in the "prestellar", "stellar'', and "failed" (those cores that redisperse back into the environment) stages as a function of n_thr. The number ratios are measured indirectly in the simulations due to their resolution limitations. Our approach contains one free parameter, the lifetime of a protostellar object t_yso (Class 0 + Class I stages), which is outside the realm of the simulations. Assuming a value t_yso = 0.46 Myr, we obtain number ratios of starless to stellar cores ranging from 4-5 at n_thr = 1.5 x 10^4 cm^-3 to 1 at n_thr = 1.2 x 10^5 cm^-3, again in good agreement with observational determinations. We also find that the mass in the failed cores is comparable to that in stellar cores at n_thr = 1.5 x 10^4 cm^-3, but becomes negligible at n_thr = 1.2 x 10^5 cm^-3, in agreement with recent observational suggestions that at the latter densities the cores are in general gravitationally dominated. We conclude by noting that the timescale for core contraction and collapse is virtually the same in the subcritical, ambipolar diffusion-mediated model of star formation, in the model of star formation in turbulent supercritical clouds, and in a model intermediate between the previous two, for currently accepted values of the clouds' magnetic criticality.
description: 25 pages, 8 figures, ApJ accepted. Fig.1 animation is at http://www.astrosmo.unam.mx/~e.vazquez/turbulence/movies/Galvan_etal07/Galvan_etal07.html
MOESM6 of Potential therapeutic effects of cyanidin-3-O-glucoside on rheumatoid arthritis by relieving inhibition of CD38+ NK cells on Treg cell differentiation
Creators: name: Wang, Hongxing
name: Li, Shutong
name: Zhang, Guoqing
name: Wu, Hui
name: Chang, Xiaotian
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Hematology

description: Additional file 6: Table S1. Detailed clinical information of patients with RA (DOC 132 kb)
Weak values of electron spin in a double quantum dot
Creators: name: Romito, Alessandro
name: Gefen, Yuval
name: Blanter, Yaroslav M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We propose a protocol for a controlled experiment to measure a weak value of the electron's spin in a solid state device. The weak value is obtained by a two step procedure -- weak measurement followed by a strong one (post-selection), where the outcome of the first measurement is kept provided a second post-selected outcome occurs. The set-up consists of a double quantum dot and a weakly coupled quantum point contact to be used as a detector. Anomalously large values of the spin of a two electron system are predicted, as well as negative values of the total spin. We also show how to incorporate the adverse effect of decoherence into this procedure.
description: 4+ pages, 3 figures, final published version