cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Determinants of Second Job Holding in Lithuania: A VECM Analysis
Creators: name: Dr. Shyamsundar Pal
Publisher: name: Zenodo
Year: 2019

description: This paper aims to reveal the influence of hours constraint, interest rate and unemployment on second job holding in Lithuania using quarterly data from Eurostat for the period of 2005 Q1 to 2013 Q4. Application of ADF and PP tests show that all the variables are I(1). The existence of two cointegrating equations is confirmed by the Johansen Trace and Maximum Eigenvalue tests. The FMOLS estimates of the cointegration relationship suggest that likelihood of second job holding decreases due to hours constraint, interest rate and unemployment rate in the long run. The error correction coefficient in the VECM analysis is found to be significant and negative. This finding confirms that there is a long run causality running from hours constraint, interest rate and unemployment to second job holding in Lithuania. But no short-run causality from hours constraint and unemployment to second job holding has been confirmed. The VECM Granger Causality Test demonstrates that except interest rate, the hours constraint and unemployment rate do not Granger cause second job holding in Lithuania.
War Diary of 1st Battalion Canadian Scottish Regiment, Vol. 48, August 1, 1943 to August 31, 1943
Creators: name: Canada. Canadian Army. Canadian Scottish Regiment (Princess Mary's)
Publisher: name: University of Victoria Libraries
Year: 2020
Subjects: subject: Canada. Canadian Army
valueUri: http://id.worldcat.org/fast/531187
subject: Canada. Canadian Army. Canadian Scottish Regiment (Princess Mary's)
subject: World War (1939-1945)
valueUri: http://id.worldcat.org/fast/1180924
subject: War diaries
valueUri: http://id.worldcat.org/fast/1745536

description: The war diaries are official records kept by the Battalions during a one month period. They contain the daily orders, correspondence, newsletters, and an intelligence log detailing troop activities, locations, and weather conditions. The war diaries detail the activities and movement of the 1st Battalion from training in Canada and England to active duty on the Western Front and their return to Victoria in January 1946. This diary was kept while at Monk's Gate Common, England and Inverary, Scotland and focuses on the main body of the battalion after the rear party left for a separate exercise. It has entries about some officers attending the Allied Forces Athletic meeting held in White City Stadium in London, prepping for an All Ops training exercise and move, watching training films and news reels, travelling by train to Inverary, doing "hardening-up" training consisting of hill climbing, route marching, and cliff scaling before the main training starts, the pipe band getting new kilts, waterproofing their vehicles using a special asbestos compound, an assault landing exercise, a soldier dying after a shell exploded in his hut next to a fire with the results from the Court of Inquiry coming in next month's diary, travelling by ship to Ardrossan and seeing the S.S. Queen Mary sailing by, among other activities and information. Includes appendices covering orders, strength returns (daily & weekly), training syllabi, administrative memos, movement orders, tactical signs, and various exercises.
LOFAR observations of decameter carbon radio recombination lines towards Cassiopeia A
Creators: name: Salas, P.
name: Oonk, J. B. R.
name: van Weeren, R. J.
name: Salgado, F.
name: Morabito, L. K.
name: Toribio, M. C.
name: Emig, K.
name: Röttgering, H. J. A.
name: Tielens, A. G. G. M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a study of carbon radio recombination lines towards Cassiopeia A using LOFAR observations in the frequency range 10-33 MHz. Individual carbon $α$ lines are detected in absorption against the continuum at frequencies as low as 16 MHz. Stacking several C$α$ lines we obtain detections in the 11-16 MHz range. These are the highest signal-to-noise measurements at these frequencies. The peak optical depth of the C$α$ lines changes considerably over the 11-33 MHz range with the peak optical depth decreasing from 4$\times10^{-3}$ at 33 MHz to 2$\times10^{-3}$ at 11 MHz, while the line width increases from 20 km s$^{-1}$ to 150 km s$^{-1}$. The combined change in peak optical depth and line width results in a roughly constant integrated optical depth. We interpret this as carbon atoms close to local thermodynamic equilibrium. In this work we focus on how the 11-33 MHz carbon radio recombination lines can be used to determine the gas physical conditions. We find that the ratio of the carbon radio recombination lines to that of the 158 $μ$m [CII] fine-structure line is a good thermometer, while the ratio between low frequency carbon radio recombination lines provides a good barometer. By combining the temperature and pressure constraints with those derived from the line width we are able to constrain the gas properties (electron temperature and density) and radiation field intensity. Given the 1$σ$ uncertainties in our measurements these are; $T_{e}\approx68$-$98$ K, $n_{e}\approx0.02$-$0.035$ cm$^{-3}$ and $T_{r,100}\approx1500$-$1650$ K. Despite challenging RFI and ionospheric conditions, our work demonstrates that observations of carbon radio recombination lines in the 10-33 MHz range can provide insight into the gas conditions.
description: 14 pages, 10 figures, accepted for publication in MNRAS
Deceleration of high-velocity interstellar photon sails into bound orbits at $α$ Centauri
Creators: name: Heller, René
name: Hippke, Michael
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: At a distance of about 4.22 lightyears, it would take about 100,000 years for humans to visit our closest stellar neighbor Proxima Centauri using modern chemical thrusters. New technologies are now being developed that involve high-power lasers firing at 1 gram solar sails in near-Earth orbits, accelerating them to 20% the speed of light (c) within minutes. Although such an interstellar probe could reach Proxima 20 years after launch, without propellant to slow it down it would traverse the system within hours. Here we demonstrate how the stellar photon pressures of the stellar triple $α$ Cen A, B, and C (Proxima) can be used together with gravity assists to decelerate incoming solar sails from Earth. The maximum injection speed at $α$ Cen A to park a sail with a mass-to-surface ratio ($σ$) similar to graphene (7.6e-4 gram/m$^{-2}$) in orbit around Proxima is about 13,800 km/s (4.6% c), implying travel times from Earth to $α$ Cen A and B of about 95 years and another 46 years (with a residual velocity of 1280 km/s) to Proxima. The size of such a low-$σ$ sail required to carry a payload of 10 grams is about 10$^5$ m$^2$ = (316 m)$^2$. Such a sail could use solar photons instead of an expensive laser system to gain interstellar velocities at departure. Photogravitational assists allow visits of three stellar systems and an Earth-sized potentially habitable planet in one shot, promising extremely high scientific yields.
description: 9 pages, 5 figures (4 colored)
Untitled IteMethod for stimulating invasive larvae of entomopathogenic nematodes of the genus Steinernema to transition to the feeding stagem
Creators: name: Spiridonov, Sergei
name: Pridannikov, Mikhail
name: Efeykin, Boris
name: Loginova, Olga
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 310907
subject: Animal physiological ecology

description: The invention relates to the microbiological industry, namely to methods for obtaining feeding stages of invasive larvae of entomopathogenic nematodes of the genus Steinernema from non-feeding ones. The invention can be used in agriculture (as a biological method for combating insect pests of plants) and in fundamental biology (for studying the biology of entomopathogenic nematodes).
Unruh Effect in non local field theories
Creators: name: Kajuri, Nirmalya
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study Unruh effect for a wide class of non local theories. Using the approach of Bogoliubov coefficents we show that Unruh effect remains entirely unmodified in these theories. However, for those non local theories which incorporate a minimal length, the approach using Unruh-DeWitt detectors predicts a modification in Unruh effect. Previous work shows that this modification may even be drastic. This appears contradictory, with two apparently equivalent methods giving different results. We investigate the origin of the contradiction and show that for these theories, the two methods are indeed inequivalent. We argue that the detector method incorporates an assumption of local interaction that does not hold for non local theories and therefore the method of Bogoliubov coefficients is preferable.
description: 3 pages, 0 figures. Accepted for publication as a Rapid Communication in PRD
The Swampland Conjecture and F-term Axion Monodromy Inflation
Creators: name: Blumenhagen, Ralph
name: Valenzuela, Irene
name: Wolf, Florian
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We continue the investigation of F-term axion monodromy inflation in string theory, while seriously taking the issue of moduli stabilization into account. For a number of closed and open string models, we show that they suffer from serious control issues once one is trying to realize trans-Planckian field excursions. More precisely, the flux tuning required to delay the logarithmic scaling of the field distance to a trans-Planckian value cannot be done without leaving the regime where the employed effective supergravity theory is under control. Our findings are consistent with the axionic extension of the Refined Swampland Conjecture, stating that in quantum gravity the effective theory breaks down for a field excursion beyond the Planck scale. Our analysis suggests that models of F-term axion monodromy inflation with a tensor-to-scalar ratio $r\ge O(10^{-3})$ cannot be parametrically controlled.
description: 50 pages, 3 figures, v2: typos corrected and references added
Design and implementation of dynamic logic gates and R-S flip-flop using quasiperiodically driven Murali-Lakshmanan-Chua circuit
Creators: name: Venkatesh, P. R.
name: Venkatesan, A.
name: Lakshmanan, M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We report the propagation of a square wave signal in a quasi-periodically driven Murali-Lakshmanan-Chua (QPDMLC) circuit system. It is observed that signal propagation is possible only above a certain threshold strength of the square wave or digital signal and all the values above the threshold amplitude are termed as 'region of signal propagation'. Then, we extend this region of signal propagation to perform various logical operations like AND/NAND/OR/NOR and hence it is also designated as the 'region of logical operation'. Based on this region, we propose implementing the dynamic logic gates, namely AND/NAND/OR/NOR, which can be decided by the asymmetrical input square waves without altering the system parameters. Further, we show that a single QPDMLC system will produce simultaneously two outputs which are complementary to each other. As a result, a single QPDMLC system yields either AND as well as NAND or OR as well as NOR gates simultaneously. Then we combine the corresponding two QPDMLC systems in a cross-coupled way and report that its dynamics mimics that of fundamental R-S flip-flop circuit. All these phenomena have been explained with analytical solutions of the circuit equations characterizing the system and finally the results are compared with the corresponding numerical and experimental analysis.
description: 11 pages, 10 figures
R scripts
Creators: name: Coleman, David
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 310307
subject: Population ecology

description: These are a collection of R scripts that accompany the data files uploaded in the repository. Some of the scripts take a lot of time to run - for results that appear in the paper you can run 5_stats_and_plots_C.R, b_plotting_distribution_of_distances_to_cold_islands.R and c_make_the_binomial_model.R
Radio Emission from Sgr A*: Pulsar Transits Through the Accretion Disc
Creators: name: Christie, Ian
name: Petropoulou, Maria
name: Mimica, Petar
name: Giannios, Dimitrios
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Radiatively inefficient accretion flow models have been shown to accurately account for the spectrum and luminosity observed from Sgr A* in the X-ray regime down to mm wavelengths. However, observations at a few GHz cannot be explained by thermal electrons alone but require the presence of an additional non-thermal particle population. Here, we propose a model for the origin of such a population in the accretion flow via means of a pulsar orbiting the supermassive black hole in our Galaxy. Interactions between the relativistic pulsar wind with the disc lead to the formation of a bow shock in the wind. During the pulsar's transit through the accretion disc, relativistic pairs, accelerated at the shock front, are injected into the disc. The radio-emitting particles are long-lived and remain within the disc long after the pulsar's transit. Periodic pulsar transits through the disc result in regular injection episodes of non-thermal particles. We show that for a pulsar with spin-down luminosity $L_{\rm sd} \sim 3\times 10^{35}$ erg s$^{-1}$ and a wind Lorentz factor of $γ_{\rm w} \sim 10^4$ a quasi-steady synchrotron emission is established with luminosities in the $1-10$ GHz range comparable to the observed one.
description: 5 pages, 3 figures
Locating the QCD critical endpoint through finite-size scaling
Creators: name: Antoniou, N. G.
name: Diakonos, F. K.
name: Maintas, X. N.
name: Tsagkarakis, C. E.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Considering the 3d Ising universality class of the QCD critical endpoint we use a universal effective action for the description of the baryon-number density fluctuations around the critical region. Calculating the baryon-number multiplicity moments and determining their scaling with system's size we show that the critical region is very narrow in the direction of the baryon chemical potential $μ$ and wide in the temperature direction $T$ for $T > T_c$. In this context, published experimental results on local proton density-fluctuation measurements obtained by intermittency analysis in transverse momentum space in NA49 central A+A collisions at $\sqrt{s_{NN}}=17.2$ GeV (A=C,Si,Pb), restrict significantly the location $(μ_c,T_c)$ of the QCD critical endpoint. The main constraint is provided by the freeze-out chemical potential of the Si+Si system, which shows non-conventional baryon density fluctuations, restricting $(μ_c,T_c)$ within a narrow domain, $119~\textrm{MeV} \leq T_c \leq 162~\textrm{MeV}$, $252~\textrm{MeV} \leq μ_c \leq 258~\textrm{MeV}$, of the phase diagram.
description: 4 pages, 3 figures
An experimental investigation of the force network ensemble
Creators: name: Kollmer, Jonathan E.
name: Daniels, Karen E.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We present an experiment in which a horizontal quasi-2D granular system with a fixed neighbor network is cyclically compressed and decompressed over 1000 cycles. We remove basal friction by floating the particles on a thin air cushion, so that particles only interact in-plane. As expected for a granular system, the applied load is not distributed uniformly, but is instead concentrated in force chains which form a network throughout the system. To visualize the structure of these networks, we use particles made from photoelastic material. The experimental setup and a new data-processing pipeline allow us to map out the evolution subject to the cyclic compressions. We characterize several statistical properties of the packing, including the probability density function of the contact force, and compare them with theoretical and numerical predictions from the force network ensemble theory.
description: accepted for publication in the conference proceedings of Powders and Grains 2017
Catalog of Candidates for Quasars at 3 < z < 5.5 Selected among X-Ray Sources from the 3XMM-DR4 Survey of the XMM-Newton Observatory
Creators: name: Khorunzhev, G. A.
name: Burenin, R. A.
name: Meshcheryakov, A. V.
name: Sazonov, S. Yu.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences
subject: J.2.3
subject: 85A04, 85A35

description: We have compiled a catalog of 903 candidates for type 1 quasars at redshifts 320 deg in Sloan Digital Sky Survey (SDSS) fields with a total area of about 300 deg^2. Photometric SDSS data as well infrared 2MASS and WISE data were used to select the objects. We selected the point sources from the photometric SDSS catalog with a magnitude error Delta z<0.2 and a color i-z<0.6 (to first eliminate the M-type stars). For the selected sources, we have calculated the dependences chi^2(z) for various spectral templates from the library that we compiled for these purposes using the EAZY software. Based on these data, we have rejected the objects whose spectral energy distributions are better described by the templates of stars at z=0 and obtained a sample of quasars with photometric redshift estimates 2.753 in the investigated fields is shown to be about 80%. The normalized median absolute deviation is 0.07, while the outlier fraction is eta= 9. The number of objects per unit area in our sample exceeds the number of quasars in the spectroscopic SDSS sample at the same redshifts approximately by a factor of 1.5. The subsequent spectroscopic testing of the redshifts of our selected candidates for quasars at 3
description: Astronomicheskii Zhurnal, 2016, Vol. 42, No. 5, pp. 313-332
Low-loss Plasmonic Dielectric Nanoresonators
Creators: name: Yang, Yi
name: Miller, Owen D.
name: Christensen, Thomas
name: Joannopoulos, John D.
name: Soljačić, Marin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Material losses in metals are a central bottleneck in plasmonics for many applications. Here we propose and theoretically demonstrate that metal losses can be successfully mitigated with dielectric particles on metallic films, giving rise to hybrid dielectric--metal resonances. In the far field, they yield strong and efficient scattering, beyond even the theoretical limits of all-metal and all-dielectric structures. In the near field, they offer high-Purcell-factor (${>}5000$), high-quantum-efficiency (${>}90\%$), and highly directional emission at visible and infrared wavelengths. Their quality factors can be readily tailored from plasmonic-like (${\sim}10$) to dielectric-like (${\sim}10^3$), with wide control over the individual resonant coupling to photon, plasmon, and dissipative channels. Compared with conventional plasmonic nanostructures, such resonances show robustness against detrimental nonlocal effects and provide higher field enhancement at extreme nanoscopic sizes and spacings. These hybrid resonances equip plasmonics with high efficiency, which has been the predominant goal since the field's inception.
description: 9 pages, 6 figures, supplementary not included
Spherical Panoramas for Astrophysical Data Visualization
Creators: name: Kent, Brian R.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Data immersion has advantages in astrophysical visualization. Complex multi-dimensional data and phase spaces can be explored in a seamless and interactive viewing environment. Putting the user in the data is a first step toward immersive data analysis. We present a technique for creating 360 degree spherical panoramas with astrophysical data. The three-dimensional software package Blender and the Google Spatial Media module are used together to immerse users in data exploration. Several examples employing these methods exhibit how the technique works using different types of astronomical data.
description: 22 pages, 10 figures; accepted for publication in the PASP Special Focus Issue: Techniques and Methods for Astrophysical Data Visualization
Researcher Mental Health Workshop - PRIDE Masterclass 2023
Creators: name: Kismihók, Gábor
name: Schroijen, Mathias
Publisher: name: Zenodo
Year: 2023
Subjects: researcher mental health
wellbeing
ReMO

description: Researcher Mental Health workshop presentation of the ReMO COST Action at the PRIDE Masterclass 2023. The associated dataset produced during the workshop can be found here: https://zenodo.org/record/8327397 Researcher Mental Health Manifesto: https://doi.org/10.5281/zenodo.5559806 Researcher Mental Health Observatory: http://remo-network.eu/ SciLink Foundation: https://scilink.eu/ OEduverse project: https://oeduverse.eu/ OSCAR project: http://oscar-ai.eu/ eDoer training platform: http://edoer.eu/
description: The presentation and data collection was supported by the ReMO COST Action CA19117, the OSCAR - Online, open learning recommendations and mentoring towards Sustainable research CAReers project, European Commission - Erasmus Plus Programme, 2020-1-DE01-KA203-005713 , and the OEduverse project - Advancing sustainable research careers for graduate students through training in mental wellbeing, open science, and communication skills is financed by the European Commission - Erasmus Plus Programme, 2019-1-DE01-KA203-005052_FHV3
Stable and metastable freezing of classical correlations in qutrits
Creators: name: López, C. E.
name: Lastra, F.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the dynamics of quantum and classical correlations in a two-qutrit system coupled to independent reservoirs. In particular, we addressed the differences in the dynamics of Markovian and non-Markovian regimes and show that for specific initial states, classical correlations exhibit abrupt changes along the dynamics. A particular sudden change occurs when the classical correlations freezes to a certain value at a given time, revealing the apparition of a pointer-state basis. After this given time, the decoherence only affects quantum correlations. Here we identify two regimes in the decoherence dynamics: a mixed regime when both classical and quantum correlations decay and a quantum regime when only quantum correlations decay. We show that the freezing of classical correlations can be stable or metastable depending on the system-reservoirs parameters. In the long-time limit, we find analytical expressions for the pointer-state basis the system settles in, and consequently for classical and quantum correlations.
Bound states of skyrmions and merons near the Lifshitz point
Creators: name: Kharkov, Y. A.
name: Sushkov, O. P.
name: Mostovoy, M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Nuclear Theory (nucl-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study topological defects in anisotropic ferromagnets with competing interactions near the Lifshitz point. We show that skyrmions and bi-merons are stable in a large part of the phase diagram. We calculate skyrmion-skyrmion and meron-meron interactions and show that skyrmions attract each other and form ring-shaped bound states in a zero magnetic field. At the Lifshitz point merons carrying a fractional topological charge become deconfined. These results imply that unusual topological excitations may exist in weakly frustrated magnets with conventional crystal lattices.
description: 5 pages, 4 figures
Online appendix: Characterizing Role Models in Software Practitioners' Career
Creators: name: Sánchez-Gordón, Mary
name: Colomo-Palacios, Ricardo
name: Sánchez, Alex
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 461202
subject: Empirical software engineering

description: This online appendix includes the interview script (Spanish) used in the study on how role models influence software practitioners’ careers.A role model is a person who serves as an example for others to follow, especially in terms of values, behavior, achievements, and personal characteristics. In this paper, authors study how role models influence software practitioners’ careers, an aspect not studied in the literature before. By means of this study, authors aim to understand if there are any salient role model archetypes and what characteristics are valued by participants in their role models. To do so, authors use a thematic coding approach to analyze the data collected from interviewing ten Latin American software practitioners. Findings reveal that role models were perceived as sources of knowledge, yet the majority of participants, regardless of their career stage, displayed a stronger interest in the human side and the moral values that their role models embodied. This study also shows that any practitioner can be viewed as a role model.
The hard Pomeron impact on the high-energy elastic scattering of nucleons
Creators: name: Godizov, A. A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The role of the hard Pomeron (HP) exchanges in the high-energy diffractive interaction of nucleons is explored. It is demonstrated that the HP subdominance at available energies and low transferred momenta is due to the extremely low slope of its Regge trajectory.
description: 6 pages
Maximizing propulsive thrust of a driven filament at low Reynolds number via variable flexibility
Creators: name: Peng, Zhiwei
name: Elfring, Gwynn J.
name: Pak, On Shun
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: At low Reynolds numbers the locomotive capability of a body can be dramatically hindered by the absence of inertia. In this work, we show how propulsive performance in this regime can be significantly enhanced by employing spatially varying flexibility. As a prototypical example, we consider the propulsive thrust generated by a filament periodically driven at one end. The rigid case leads to zero propulsion, as so constrained by Purcell's scallop theorem, while for uniform filaments there exists a bending stiffness maximizing the propulsive force at a given frequency; here we demonstrate explicitly how considerable further improvement (greater than 37% enhancement compared with the optimal uniform stiffness) can be achieved by simply varying the stiffness along the filament. The optimal flexibility distribution is strongly configuration-dependent: while increasing the flexibility towards the tail-end enhances the propulsion of a clamped filament, for a hinged filament decreasing the flexibility towards the tail-end is instead favorable. The results reveal new design principles for maximizing propulsion at low Reynolds numbers, potentially useful for developing synthetic micro-swimmers requiring large propulsive force for various biomedical applications.
description: 5 figures
Nonstandard bilinearization of $\cal{PT}$-invariant nonlocal nonlinear Schrödinger equation: Bright soliton solutions
Creators: name: Stalin, S.
name: Senthilvelan, M.
name: Lakshmanan, M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: In this paper, we succeed to bilinearize the $\cal{PT}$-invariant nonlocal nonlinear Schrödinger (NNLS) equation through a nonstandard procedure and present more general bright soliton solutions. We achieve this by bilinearizing both the NNLS equation and its associated parity transformed complex conjugate equation in a novel way. The obtained one and two soliton solutions are invariant under combined space and time reversal transformations and are more general than the known ones. Further, by considering the two-soliton solution we bring out certain novel interaction properties of the $\cal{PT}$-invariant multi-soliton solutions.
description: 13 pages, 2 figures, Accepted for Publication in Physics Letters A
RCCPAC: A parallel relativistic coupled-cluster program for closed-shell and one-valence atoms and ions in FORTRAN
Creators: name: Mani, B. K.
name: Chattopadhyay, Siddhartha
name: Angom, D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report the development of a parallel FORTRAN code, RCCPAC, to solve the relativistic coupled-cluster equations for closed-shell and one-valence atoms and ions. The parallelization is implemented through the use of message passing interface, which is suitable for distributed memory computers. The coupled-cluster equations are defined in terms of the reduced matrix elements, and solved iteratively using Jacobi method. The ground and excited states coupled-cluster wave functions obtained from the code could be used to compute different properties of closed-shell and one-valence atom or ion. As an example we compute the ground state correlation energy, attachment energies, $E$1 reduced matrix elements and hyperfine structure constants.
description: Modified the affiliation for one of the authors. The code may be obtained by clicking on the "other formats" in the paper download page. in Computer Physics Comm. (2016)
A Semi-analytic Criterion for the Spontaneous Initiation of Carbon Detonations in White Dwarfs
Creators: name: Garg, Uma
name: Chang, Philip
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Despite over forty years of active research, the nature of the white dwarf progenitors of Type Ia supernovae remains unclear. However, in the last decade, various progenitor scenarios have highlighted the need for detonations to be the primary mechanism by which these white dwarfs are consumed, but it is unclear how these detonations are triggered. In this paper we study how detonations are spontaneously initiated due to temperature inhomogeneities, e.g., hotspots, in burning nuclear fuel in a simplified physical scenario. Following the earlier work by Zel'Dovich, we describe the physics of detonation initiation in terms of the comparison between the spontaneous wave speed and the Chapman-Jouguet speed. We develop an analytic expression for the spontaneous wave speed and utilize it to determine a semi-analytic criterion for the minimum size of a hotspot with a linear temperature gradient between a peak and base temperature for which detonations in burning carbon-oxygen material can occur. Our results suggest that spontaneous detonations may easily form under a diverse range of conditions, likely allowing a number of progenitor scenarios to initiate detonations that burn up the star.
description: 9 pages, 3 figures, accepted to ApJ
Modeling transport properties and electrochemical performance of hierarchically structured lithium-ion battery cathodes using resistor networks and mathematical half-cell models
Creators: name: Birkholz, Oleg
Publisher: name: KIT Scientific Publishing
Year: 2022
Subjects: Hierarchisch strukturierte Kathoden
Widerstand-Netzwerk-Methoden
Zellmodellierung
Effektive Transporteigenschaften
Hierarchically structured cathodes
Resistor network methods
Cell modeling
Effective transport parameters

description: Hierarchically structured active materials in electrodes of lithium-ion cells are promising candidates for increasing gravimetric energy density and improving rate capability of the system. To investigate the influence of cathode structures on the performance of the whole cell, efficient tools for calculating effective transport properties of granular systems are developed and their influence on the electrochemical performance is investigated in specially adapted cell models.
Informativo Digital
Creators: name: Barbosa, Natália Ferreira
name: Santos, Arthur Saldanha Dos
name: Louback, Ester
name: De Podestá, Marcelo
Publisher: name: Zenodo
Year: 2023

description: Nosso quarto informativo aborda outra temática extremamente importante para os estudos alimentares: a cultura alimentar. Para abordar essa questão, o Mesa Digital volta-se para a comida mineira, principalmente neste mês, pois 5 de julho é considerado o dia da Gastronomia Mineira. Essa data foi definida pelo governo do Estado de Minas Gerais, em 2012, tendo como base o dia do nascimento de Eduardo Frieiro, autor do primeiro livro de gastronomia dedicado à comida de Minas Gerais, “Feijão, angu e couve: ensaio sobre a comida dos mineiros”, lançado em 1966. Falar de comida mineira é falar de cultura alimentar, tradição e sociobiodiversidade. Seja pelas cozinheiras no campo, nas pequenas cidades, seja pela alta gastronomia dos chefes de cozinha, a comida mineira ganha força com as novas tecnologias digitais e vem sendo intensamente pesquisada por turistas, curiosos e apaixonados pela gastronomia mineira. No primeiro texto, por meio de um trocadilho “A comida mineira está logo ali”, os autores Natália Ferreira Barbosa e Arthur Saldanha dos Santos discutem a noção de comida mineira e suas relações com a cultura alimentar, a sociobiodiversidade e as tecnologias digitais, destacando o seu alcance na atualidade. #4 mesa digital p.5 4 Na sequência, com o título “Eu faço o que eu gosto de comer”, o informativo apresenta uma entrevista inédita com a Dona Nenzinha, cozinheira nativa do Norte de Minas Gerais, guardiã agroecológica, detentora dos saberes do plantar e de transformar o alimento em comida. Ela é residente e liderança na comunidade de Abóboras no município de Montes Claros. A entrevista foi conduzida pela pesquisadora do Mesa Digital Natália Ferreira. O terceiro texto, intitulado “Uma comida cheia de mineirice”, também é uma entrevista inédita com a renomada chef de cozinha Juliana Duarte. Juliana é historiadora e chef de cozinha do seu restaurante “Cozinha Santo Antônio”, que abriu há três anos em Belo Horizonte (MG). O local serve comida mineira com afeto, mas também tem uma relação especial com a sustentabilidade, pois se tornou um ponto de apoio para a realização de compras coletivas agroecológicas locais, além de utilizar ingredientes agroecológicos nos pratos oferecidos no restaurante. A entrevista foi conduzida pela pesquisadora do Mesa Digital Ester Louback. O quarto texto, por sua vez, trata-se de uma breve crônica que aborda a comida mineira de maneira descontraída no dia a dia dos mineiros. Esse texto é intitulado- -se “São apenas dez horas da manhã e o cheiro de alho frito já invade as ruas”, e é assinado por Ester Louback.
ZAMONAVIY ROBOTOTEXNIK PLATFORMALARLARDA QO'LLANILADIGAN MIKROKONTROLLERLAR
Creators: name: Ochilova, S.R.
name: Muqimov, Sh.I.
name: Dilmurodov, Z.D.
name: Usmonov, Maxsud
Publisher: name: Zenodo
Year: 2024

description: Robototexnika fan-texnika taraqqiyotining eng muhim yo‘nalishlaridan biri bo‘lib, unda mexanika va yangi texnologiyalar muammolari sun’iy intellekt muammolari bilan aloqa qiladi. So‘nggi yillarda robototexnika va avtomatlashtirilgan tizimlardagi yutuqlar bunga imkon berdi.
Modellierung der Mechanik und der effektiven Transporteigenschaften von partikulären Kathoden sowie deren Einfluss auf die elektrochemische Performance von Lithium-Ionen-Batterien
Creators: name: Becker, Verena Irene
Publisher: name: KIT Scientific Publishing
Year: 2022
Subjects: Lithium-Ionen-Batterien
Diskrete Elemente
Mechanik
Lithium-Ion-Batteries
discrete elements
mechanics

description: In der vorliegenden Arbeit werden Lithium-Ionen-Batterien numerisch untersucht. Der Einfluss des Kalandrierens einer Elektrode auf die mechanisch induzierten Änderungen in der Mikrostruktur und die resultierende Performance einer Zelle sind dabei im Fokus. Der Einfluss variierender Partikelformen sowie plastischer Materialeigenschaften wird analysiert. Entscheidend hierbei ist die Bestimmung der effektiven Transporteigenschaften, die die Performance einer Batterie maßgeblich beinflussen.
The effect of the heating rate on the phase selection in Al/Ni multilayers
Creators: name: Neuhauser, Tobias
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2022
Subjects: Al/Ni-Multilayers
X-ray diffraction
Synchrotron
Nanocalorimetry
Intermetallic phases
Rapid heating

description: Die vorliegende Arbeit untersucht den Einfluss von Heizraten bis 10⁶ K/s auf die Bildung von intermetallischen Phasen in Al/Ni-Multilagen. Das Ziel ist ein mechanismenbasiertes Verständnis der Phasenbildungprozessen als Grundlage für die Entwicklung von neuartigen Nano-Kompositmaterialien. Für diesen Zweck wird eine in situ Untersuchungsmethode entwickelt, die eine thermodynamische und strukturelle Charakterisierung während der schnell ablaufenden Reaktionen ermöglicht. Durch die Kombination von chipbasierter Nanokalorimetrie mit Synchrotron-Röntgenbeugung wird eine Zeitauflösung von 15 μs erreicht. Drei Aspekte von Al/Ni-Reaktionen werden in dieser Arbeit detailliert untersucht: (i) die Festkörperreaktionen bei Heizraten unter 500 K/s, (ii) das Zündverhalten des Materialsystems und (iii) die Phasenbildung bei selbstfortschreitenden Reakionen. In Abhängigkeit von der Heizrate und der Temperatur kann gezielt die Bildung von Al₉Ni₂, Al₃Ni und Al₃Ni₂ iniitiert werden. Erstmalig wird der Zündpunkt von Al/Ni-Multilagen auf thermodynamischer Grundlage bestimmt und darauf basierend ein neues Kriterium für die Zündtemperatur abgeleitet. Es werden drei verschiedene Arten von selbsfortschreitenden Reaktionen beobachtet: (i) Flüssigphasen-Umwandlung, (ii) Flüssigphasen-Umwandlung mit Zwischenschicht und (iii) Festkörper-Umwandlung. Die Letztere kann zum ersten Mal in Multilagenmaterialien nachgewiesen werden.
Towering Taiyue Mountain (巍巍的太岳山)
Creators: name: Sun Liren 孙里人
name: Yin Xiangqian 尹向前
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: Landscape
Revolutionary History

description: The Taiyue Mountain region in modern Shanxi Province was a military base established in 1937 by the communists in the war against Japan. Yin Xiangqian (尹向前) and Sun Liren (孙里人) (both artists named in calligraphic inscription, only Sun Liren in the metadata). Price: 18 fen
Least square ellipsoid fitting using iterative orthogonal transformations
Creators: name: Reza, Amit
name: Sengupta, Anand S.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: We describe a generalised method for ellipsoid fitting against a minimum set of data points. The proposed method is numerically stable and applies to a wide range of ellipsoidal shapes, including highly elongated and arbitrarily oriented ellipsoids. This new method also provides for the retrieval of rotational angle and length of semi-axes of the fitted ellipsoids accurately. We demonstrate the efficacy of this algorithm on simulated data sets and also indicate its potential use in gravitational wave data analysis.
description: Submitted to Applied Mathematics and Computation (Elsevier)
Rice sheath blight disease control by native endophytic Bacillus subtilis from Kuttanad, a Globally Important Agricultural Heritage System
Creators: name: Krishnan, Gopika Vijayakumari
name: Abraham, Billu
name: Lankalapalli, Ravi Shankar
name: Amma, Dileep Kumar Bhaskaran Nair Saraswathy
name: Bhaskaran, Krishnakumar
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Plant Biology

description: Kuttanad in India is known as ‘the rice bowl of Kerala’ and renowned for its unique rice cultivation system that is below sea level. However, rice production in this wetland ecosystem is seriously threatened by sheath blight disease caused by the fungus Rhizoctonia solani, which has resulted in a significant decline in grain quality and a 50% loss in yield. In the present study, we isolated two endophytic Bacillus subtilis strains, NIIST B616 and NIIST B627, from the roots of rice plants growing in the Kuttanad region and tested their efficacy in controlling sheath blight disease. We found that rice plants inoculated with a combination of both Bacillus strains and R. solani had a 64.71% lower disease incidence and a 31.02% higher harvest index than plants treated with R. solani alone. An analysis of defence-related enzymes and chemicals revealed that treatment with both isolates together greatly enhanced levels of l-phenylalanine ammonia-lyase (PAL; 2.8 fold), peroxidase (POX; 7.4 fold), polyphenol oxidase (PPO; 4.5 fold), and total phenol (8.5 fold) compared with plants treated solely with R. solani, indicating that these isolates significantly increased plant defence responses through induced systemic resistance (ISR), and this finding was validated through a split-root experiment. More detailed analysis using gas chromatography–tandem mass spectrometry (GC-MS/MS) and liquid chromatography–tandem mass spectrometry (LC-MS/MS) techniques revealed that cyclo-(Pro-Leu) and cyclo-(Pro-Phe) were the major components responsible for the antifungal properties of the two isolates and their capacity to trigger ISR in plants. Thus, the Bacillus strains and their metabolites may be deemed viable alternatives for controlling the prevalence of sheath blight disease in rice plants and augmenting rice production at unique locations such as Kuttanad.
Ciencia Abierta y Publicación Abierta
Creators: name: Gallardo-Ferreira, Fabian
Publisher: name: Zenodo
Year: 2023
Subjects: Acceso abierto
open access
scholarly publication
publicación abierta
open science
ciencia abierta
Universidad de La Frontera

description: En el contexto del Proyecto INCA 210024 - UFRO de la ANID y sus planes de formación para la Facultad de Ciencia Jurídicas y Empresariales de la Universidad de La Frontera, se han desarrollado jornadas de capacitación en Ciencia Abierta. Esta presentación esta asociada a las temáticas de Ciencia Abierta y Publicación abierta con el objetivo de sensibilizar respecto a los múltiples conceptos que engloba la Ciencia Abierta para luego adentrarnos en los modelos de publicación que promueven el acceso abierto de la publicación cientfíca.
description: Proyecto InES Ciencia Abierta financiado por la Agencia Nacional de Investigación y Desarrollo (ANID), Chile.
Long-range interactions of hydrogen atoms in excited states. I. 2S-1S interactions and Dirac-delta perturbations
Creators: name: Adhikari, C. M.
name: Debierre, V.
name: Matveev, A.
name: Kolachevsky, N.
name: Jentschura, U. D.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The theory of the long-range interaction of metastable excited atomic states with ground-state atoms is analyzed. We show that the long-range interaction is essentially modified when quasi-degenerate states are available for virtual transitions. A discrepancy in the literature regarding the van der Waals coefficient C_6(2S;1S) describing the interaction of metastable atomic hydrogen (2S state) with a ground-state hydrogen atom is resolved. In the the van der Waals range a_0 << R << a_0/alpha, where a_0= hbar/(alpha m c) is the Bohr radius and alpha is the fine structure constant, one finds the symmetry-dependent result E_{2S;1S}(R) ~ (-176.75 +/- 27.98) E_h (a_0/R)^6 (E_h denotes the Hartree energy). In the Casimir-Polder range a_0/alpha << R << hbar c/L, where L = E(2S_{1/2})-E(2P_{1/2}) is the Lamb shift energy, one finds E_{2S;1S}(R) ~ (-121.50 +/- 46.61) E_h (a_0/R)^6. In the the Lamb shift range R >> hbar c/L, we find an oscillatory tail with a negligible interaction energy below 10^(-36) Hz. Dirac-delta perturbations to the interaction are also evaluated and results are given for all asymptotic distance ranges; these effects describe the hyperfine modification of the interaction, or, expressed differently, the shift of the hydrogen 2S hyperfine frequency due to interactions with neighboring 1S atoms. The 2S hyperfine frequency has recently been measured very accurately in atomic beam experiments.
description: 21 pages; RevTeX; accepted for publication in Phys. Rev. A
Who Sets the Agenda for Climate Change in China? A Longitudinal Analysis of Primary Actors that Drive Online Discussions on Social Media
Creators: name: Ji, Jiaojiao
name: Lu, Yongxu
name: Calabrese, Christopher
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Environmental Sciences not elsewhere classified
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified

description: Multiple actors may harness social media to promote their own stances and influence others on climate change. Our investigation focused on second-level agenda-setting, determining which actors drove climate change conversations by attracting public attention to various topics. We examined the primary topics and actors involved in climate change discussions on Weibo (N = 1,090,420 posts) from 2010 to 2020. Our findings indicate that most discussions centered around environmental impact rather than culture, politics and government, or action advocacy. Celebrities, ordinary users, and civil society organizations were found to be influential for many topics, challenging the notion that governments and media lead the online climate change discourse. This study contributes to a deeper understanding of second-level agenda-setting in the digital age and highlights the importance of leveraging different social actors, especially celebrities, in China to achieve global climate change mitigation goals.
Positioning Accuracy Analysis of Low-cost GNSS for Dual-frequency Android Smartphone in Yaounde 7
Creators: name: Nuiping Yakum, Paul
Publisher: name: Zenodo
Year: 2024

description: This work is the very first smartphone GNSS positioning accuracy evaluation examined in Cameroo. It is to estimate the positioning accuracy of Xiaomi 12t smartphone in PPP static mode compared to the emlid reach rs2 geodetic receiver observed in the same mode under the same conditions.
ЙЎЛ-ТРАНСПОРТ ҲОДИСЛАРИ БИЛАН БОҒЛИҚ ЖИНОЯТЛАРНИНГ КВАЛИФИКАЦИЯСИ
Creators: name: Қулматов, Аброр
Publisher: name: Zenodo
Year: 2024

description: Мақолада транспорт воситалари ҳаракати ёки улардан фойдаланиш хавфсизлиги қоидаларини бузиш учун жавобгарликни назарда тутувчи жиноятни объектив ва субъектив белгилари, квалификацияга оид ҳолатлари, ўхшаш жиноятлардан фарқловчи жиҳатлари амалдаги жиноят қонунчилиги асосида таҳлил қилинган.