cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Study of $B$ and $B_s$ Decays at Belle
Creators: name: Nisar, N. K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report results on the search for $B_s\toη^{\prime}η$ decay, and the searches for $B^0\to\textrm{invisible}$ and $B^0\to\textrm{invisible}+γ$ decays. The former result is based on a data sample of $121.4~\textrm{fb}^{-1}$ recorded at the $Υ(5S)$ resonance while the later results are obtained from a $711~\textrm{fb}^{-1}$ of data sample collected at $Υ(4S)$ resonance with the Belle detector at the KEKB $e^+e^-$ collider. We observe no significant signal for the decays and set upper limit on their branching fractions at 90\% confidence level of $\mathcal{B}(B_s\toη^{\prime}η)<7.1\times 10^{-5}$, $\mathcal{B}(B^0\to\textrm{invisible})<7.8\times 10^{-5}$ and $\mathcal{B}(B^0\to\textrm{invisible}+γ)<1.6\times 10^{-5}$.
The productivity of meadow-chestnut soils of the North - Western Precaspian region according to the dynamics of the environmental factors
Creators: name: G. N. Gasanov
name: T. A. Asvarova
name:  K. M Hajiyev
name: R. R. Bashirov
name: A. S. Abdulayeva
name: Z. N. Akhmedova
name: Sh. K. Salikhov
name: N. I. Ramazanova
name: R. Z. Usmanov
name: A. A. Aytemirov
name: N. R. Magomedov
name: M. R. Musaev
Publisher: name: International   Agricultural   Journal
Year: 2018
Subjects: evaporation
hydrothermal conditions
integral moisture in the soil
the integral of aridity
meadow -chestnut soil
sulphates
chlorides
degree of salinity
salinity type
productivity of phytocenosis
ephemers
halophytes
species composition of phytocenoses
coefficient the use of FAR

description: The productivity of phytocenoses on the meadow-chestnut soils is theoretically calculated under hydrothermal conditions and practically implanted moisture integral. It is found that high productivity (0.5 t/ha of air-dry weight) of ephemeral synusiae is achieved through the combination of the following environmental factors in April-May; precipitation 80-85 mm, the average temperature is 15-16°C, relative humidity 70-73%, volatility 130-140 mm, coefficient of moisture 0.30, integral hydration period 29.8. In this case, the degree of salinity in soil layer 0-23 cm classified as weak, salinity type is sulfate-chloride. In normal climatic conditions of the year (2013), when precipitation during the vegetation period is distributed relatively evenly, productivity of ephemers and ephemeroids is 2.0 c/ha (centner/hectare) of grasses and thistles – 18.2 c/ha, the coefficient the use of FAR during the vegetation period of 0.30, the share of the ephemeral synusiae in it – 0.16%.
Macroeconomic factors in realizing export potential for animal production
Creators: name: A. I. Tikhomirov
name: A. A. Fomin
Publisher: name: International   Agricultural   Journal
Year: 2018
Subjects: exports
animal products
global market
import countries
macroeconomic factors
devaluation
inflation
state support

description: The objective of the survey is to study the macroeconomic factors influencing the competitiveness of the animal products and the realization of the animal sector export potential benefits. The survey methodology was based on the domestic and foreign scientists’ works in the progressive development of the livestock sector, the formation of the domestic agricultural market, and the increase in the export potential of agriculture. The empirical research was based on the official datasets and the analytical materials obtained from the international unions, the branch associations, and the state institutions. The expert assessment method, the statistical methods in economic evaluation, and the estimation and construction practices were used in the survey. The trends in the animal product exports within the state agricultural development program were determined in the survey. For 2012-2016, the beef export volumes rose nine times, while the pig meat and egg exports reached 18.7 and 15.7 thousand tonnes, respectively. The effects of the devaluation and inflation processes happened to the Russian economy on the economic efficiency and the competitiveness of the domestic animal production were calculated. For instance, the average annual growth rate in the milk production costs for 2011-2016 comprised 8.3% with the increase in the total milk production costs (48.4%). It affected the development and the investment attractiveness of the sector. The measures to improve the mechanisms of the state support and to provide a favorable environment for the Russian animal product exporters in the international market have been proposed. Allocating the subsidies on the livestock product sales in the foreign market can improve the competitiveness of the domestic producers and offer the opportunity to stabilize the price situation in the domestic market. The other form of a support under the state authorities should be the effective approaches to making easier the administrative barrier to using the veterinary and sanitary control for the domestic goods in the biggest global markets.
Rapid Formation of Exoplanetesimals Revealed by White Dwarfs
Creators: name: Bonsor, A.
name: Lichtenberg, T.
name: Drazkowska, J.
name: Buchan, A. M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: The timing of formation for the first planetesimals determines the mode of planetary accretion and their geophysical and compositional evolution. Astronomical observations of circumstellar discs and Solar System geochronology provide evidence for planetesimal formation during molecular cloud collapse, much earlier than previously estimated. Here, we present distinct observational evidence from white dwarf planetary systems for planetesimal formation occurring during the first few hundred thousand years after cloud collapse in exoplanetary systems. A significant fraction of white dwarfs have accreted planetary material rich in iron core or mantle material. In order for the exo-asteroids accreted by white dwarfs to form iron cores, substantial heating is required. By simulating planetesimal evolution and collisional evolution we show that the most likely heat source is short-lived radioactive nuclides such as Al-2 (half life of approximately 0.7 Myr). Core-rich materials in the atmospheres of white dwarfs, therefore, provide independent evidence for rapid planetesimal formation, concurrent with star formation.
description: Accepted to Nature Astronomy
Polarization Spectroscopy of High-Order Harmonic Generation in Gallium Arsenide
Creators: name: Kaassamani, Shatha
name: Auguste, Thierry
name: Tancogne-Dejean, Nicolas
name: Liu, Xu
name: Boutu, Willem
name: Merdji, Hamed
name: Gauthier, David
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: An interesting property of high harmonic generation in solids is its laser polarization dependent nature which in turn provides information about the crystal and band structure of the generation medium. Here we report on the linear polarization dependence of high-order harmonic generation from a gallium arsenide crystal. Interestingly, we observe a significant evolution of the anisotropic response of above bandgap harmonics as a function of the laser intensity. We attribute this change to fundamental microscopic effects of the emission process comprising a competition between intraband and interband dynamics. This intensity dependence of the anisotropic nature of the generation process offers the possibility to drive and control the electron current along preferred directions of the crystal, and could serve as a switching technique in an integrated all-solid-state petahertz optoelectronic device.
First Measurement of the $Σ$ Beam Asymmetry in $η^{\prime}$ Photoproduction off the Proton near Threshold
Creators: name: Sandri, P. Levi
name: Mandaglio, G.
name: De Leo, V.
name: Bartalini, O.
name: Bellini, V.
name: Bocquet, J. P.
name: Capogni, M.
name: Curciarello, F.
name: D'Angelo, A.
name: Didelez, J. P.
name: Di Salvo, R.
name: Fantini, A.
name: Franco, D.
name: Gaulard, C.
name: Gervino, G.
name: Ghio, F.
name: Giardina, G.
name: Girolami, B.
name: Giusa, A.
name: Lapik, A.
name: Lleres, A.
name: Mammoliti, F.
name: Manganaro, M.
name: Moricciani, D.
name: Mushkarenkov, A.
name: Nedorezov, V.
name: Randieri, C.
name: Rebreyend, D.
name: Rudnev, N.
name: Russo, G.
name: Schaerf, C.
name: Sperduto, M. L.
name: Sutera, M. C.
name: Turinge, A.
name: Vegna, V.
name: Zonta, I.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The $Σ$ beam asymmetry in $η^{\prime}$ photoproduction off the proton was measured at the GrAAL polarised photon beam with incoming photon energies of 1.461 and 1.480 GeV. For both energies the asymmetry as a function of the meson production angle shows a clear structure, more pronounced at the lowest one, with a change of sign around 90$^o$. The observed behaviour is compatible with P-wave D-wave (or S-wave F-wave) interference, the closer to threshold the stronger. The results are compared to the existing state-of-the-art calculations that fail to account for the data.
description: 6 pages, 4 figures, accepted for publication on Eur. Phys. J A
Investigation of the influence of the quality of soils in the development of plants with the help of the method of IR-spectroscopy
Creators: name: Baloyan, Babken Mushegovich
name: Chudnova, Tatiana Anatolievna
name: Shapovalov Dmitry Anatolievich
Publisher: name: International   Agricultural   Journal
Year: 2018
Subjects: plant objects
sorbents
optical methods

description: The paper presents the data of spectral analysis of samples of test plants grown on contaminated soils with admixtures of natural sorbents. It is shown that the introduction of zeolites and schungites allows to clean the soil from ions of heavy metals and oil products. Using method of multiple frustrated total internal reflection in the range of 1800-1200 cm-1 without the polarization of the light flow and in parallel and perpendicular polarized light spectrums of the external structures and cells of plant objects are obtained, dichroisms of absorption bands are defined. It is established that the introduction of sorbents in soil increases the productivity of the soil, exerting a positive influence on the development of plants. With the use of IR-spectroscopy it is determined that presence of zeolite in the soil increases the adaptive properties of plants to the environment.
On summability, multipliability, product integrability and parallel translation
Creators: name: Heikkilä, Seppo
name: Slavík, Antonín
Publisher: name: arXiv
Year: 2014
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 28B05, 46G10, 26A39, 26A42, 40A05, 40A20, 34G10

description: In this paper we provide necessary and sufficient conditions for the existence of the Kurzweil, McShane and Riemann product integrals of step mappings with well-ordered steps, and for right regulated mappings with values in Banach algebras. Our basic tools are the concepts of summability and multipliability of families in normed algebras indexed by well-ordered subsets of the real line. These concepts also lead to the generalization of some results from the usual theory of infinite series and products. Finally, we present two applications of product integrals: First, we describe the relation between Stieltjes-type product integrals, Haahti products, and parallel translation operators. Second, we provide a link between the theory of strong Kurzweil product integrals and strong solutions of linear generalized differential equations.
description: 45 pages, 1 figure
Towards realistic simulations of human cough: effect of droplet emission duration and spread angle
Creators: name: Li, Mogeng
name: Chong, Kai Leong
name: Ng, Chong Shen
name: Bahl, Prateek
name: de Silva, Charitha M.
name: Verzicco, Roberto
name: Doolan, Con
name: MacIntyre, C. Raina
name: Lohse, Detlef
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Human respiratory events, such as coughing and sneezing, play an important role in the host-to-host airborne transmission of diseases. Thus, there has been a substantial effort in understanding these processes: various analytical or numerical models have been developed to describe them, but their validity has not been fully assessed due to the difficulty of a direct comparison with real human exhalations. In this study, we report a unique comparison between datasets that have both detailed measurements of a real human cough using spirometer and particle tracking velocimetry, and direct numerical simulation at similar conditions. By examining the experimental data, we find that the injection velocity at the mouth is not uni-directional. Instead, the droplets are injected into various directions, with their trajectories forming a cone shape in space. Furthermore, we find that the period of droplet emissions is much shorter than that of the cough: experimental results indicate that the droplets with an initial diameter $\gtrsim 10μ$m are emitted within the first 0.05 s, whereas the cough duration is closer to 1 s. These two features (the spread in the direction of injection velocity and the short duration of droplet emission) are incorporated into our direct numerical simulation, leading to an improved agreement with the experimental measurements. Thus, to have accurate representations of human expulsions in respiratory models, it is imperative to include parametrisation of these two features.
Bifurcations of heteroclinic contours in two-parameter planar systems: Overview and explicit examples
Creators: name: Kuznetsov, Yuri A.
name: Hooyman, Joost
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: Smooth planar vector fields containing two hyperbolic saddles may possess contours formed by heteroclinic connections between these saddles. We present an overview of the bifurcations of these contours based on papers by J.W. Reyn and A.V. Dukov. Additionally, two new explicit polynomial systems containing such contours are derived, which are studied using the bifurcation software MatCont and are shown to exhibit the theoretically predicted phenomena, including series of heteroclinic connections.
description: Corrected published version, 20 pages, 25 figures, added references
Data for: Emigration and survival correlate with different precipitation metrics throughout a grassland songbird's annual cycle
Creators: name: Silber, Katy
name: Mohankumar, Narmadha M.
name: Hefley, Trevor J.
name: Boyle, W. Alice
Publisher: name: Zenodo
Year: 2023
Subjects: Ammodramus savannarum
tallgrass prairie
dispersal
Great Plains
rainfall
Konza Prairie Biological Station

description: Many exogenous factors may influence demographic rates (i.e., births, deaths, immigration, emigration), particularly for migratory birds that must cope with variable weather and habitat throughout their range and annual cycle. In midcontinental grasslands, disturbance (e.g., fire and grazing) and precipitation influence variation in grassland structure and function, but we know little about when and why precipitation is associated with grassland species' vital rates. We related estimates of detection, survival, and emigration to a priori sets of precipitation metrics to test the putative alternative factors influencing movement and mortality in grasshopper sparrows (Ammodramus savannarum). This species is a migratory songbird that exhibits exceptionally high rates of within-season and between-season dispersal. Between 2013 and 2020, we captured and resighted grasshopper sparrows in northeastern Kansas, USA, compiling capture histories for 1,332 adult males. We tested predictions of climatic hypotheses explaining variation in survival and emigration throughout a grasshopper sparrow's annual cycle; both survival and emigration were associated with the El Niño-Southern Oscillation precipitation index (ESPI). Survival was positively related with ESPI during winter, and temporary emigration was curvilinearly related to breeding season ESPI lagged 2 years, with the highest site fidelity associated with intermediate rainfall values. The relationship between rainfall and temporary emigration likely reflects the influence of weather over multiple years on vegetation structure with consequent effects on local demography. This study provides compelling support for the idea that grassland species respond to high interannual variability by adopting dispersal strategies unlike those of many well-studied migrant birds. Furthermore, the results imply that the consequences of increasing climatic extremes may not be immediately apparent, with demographic consequences lasting for at least a few years.
description: Funding provided by: National Science Foundation
Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100008982
Award Number: DEB-1754491Funding provided by: Division of Environmental Biology
Award Number: DEB‐1754491Funding provided by: Division of Environmental Biology
Award Number: DEB‐2025849
Climate change impacts on non-timber forest products: NTFP-dependent community responses from India
Creators: name: Magry, Muneer Ahmad
name: Cahill, David
name: Rookes, James
name: Narula, Sapna A.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Plant Biology

description: We investigated the impact of climate change on non-timber forest products in 62 villages of Khunti district, Jharkhand, India by employing structured questionnaires to collect primary data from 387 NTFP collectors. For contextualising the primary data results, focus group discussions and transect walks were conducted. Secondary data (temperature and rainfall from 1980 to 2018) supplemented the examination of climate change impacts over time. The findings revealed that an increase in maximum temperature has decreased lac (Kerria lacca) yield significantly by 31.60 tonnes/year. Changing climate has degraded the quality of NTFPs which has direct impacts on NTFP-based livelihoods, with the sale price of lac falling from 350 to 150 INR/kg, mahua from 22 to 20 INR/kg, and tamarind from 22 to 18 INR/kg in recent years. The majority of respondents believed that infrastructure development (98.7%), forest cover loss (94.83%) had caused shifts in climatic trends. 22% of the respondents believed that not taking into account their indigenous understanding of climate change in institutional processes was one of the challenges they face for adaptation and coping mechanisms. This study, provides strong evidence of climate change impacts on NTFPs and offers recommendations for timely actions that should be taken by the concerned stakeholders.
Towards Handling Uncertainty-at-Source in AI -- A Review and Next Steps for Interval Regression
Creators: name: Kabir, Shaily
name: Wagner, Christian
name: Ellerby, Zack
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Most of statistics and AI draw insights through modelling discord or variance between sources of information (i.e., inter-source uncertainty). Increasingly, however, research is focusing upon uncertainty arising at the level of individual measurements (i.e., within- or intra-source), such as for a given sensor output or human response. Here, adopting intervals rather than numbers as the fundamental data-type provides an efficient, powerful, yet challenging way forward -- offering systematic capture of uncertainty-at-source, increasing informational capacity, and ultimately potential for insight. Following recent progress in the capture of interval-valued data, including from human participants, conducting machine learning directly upon intervals is a crucial next step. This paper focuses on linear regression for interval-valued data as a recent growth area, providing an essential foundation for broader use of intervals in AI. We conduct an in-depth analysis of state-of-the-art methods, elucidating their behaviour, advantages, and pitfalls when applied to datasets with different properties. Specific emphasis is given to the challenge of preserving mathematical coherence -- i.e., ensuring that models maintain fundamental mathematical properties of intervals throughout -- and the paper puts forward extensions to an existing approach to guarantee this. Carefully designed experiments, using both synthetic and real-world data, are conducted -- with findings presented alongside novel visualizations for interval-valued regression outputs, designed to maximise model interpretability. Finally, the paper makes recommendations concerning method suitability for data sets with specific properties and highlights remaining challenges and important next steps for developing AI with the capacity to handle uncertainty-at-source.
A Reduced Order Controller for Output Tracking of a Kelvin-Voigt Beam
Creators: name: Paunonen, Lassi
name: Phan, Duy
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: Numerical Analysis (math.NA)
subject: Analysis of PDEs (math.AP)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 93C05, 93B52, 35K90 (93B28)

description: We study output tracking and disturbance rejection for an Euler-Bernoulli beam with Kelvin-Voigt damping. The system has distributed control and pointwise observation. As our main result we design a finite-dimensional low-order internal model based controller that is based on a spectral Galerkin method and model reduction by Balanced Truncation. The performance of the designed controller is demonstrated with numerical simulations and compared to the performance of a low-gain internal model based controller.
description: 13 pages, 7 figures. Preprint of a conference paper in the Proceedings of the 24th International Symposium on Mathematical Theory of Networks and Systems
Multi-Scale Jacobi Method for Anderson Localization
Creators: name: Imbrie, John Z.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 82D30, 60K35, 82B44, 82D30

description: A new KAM-style proof of Anderson localization is obtained. A sequence of local rotations is defined, such that off-diagonal matrix elements of the Hamiltonian are driven rapidly to zero. This leads to the first proof via multi-scale analysis of exponential decay of the eigenfunction correlator (this implies strong dynamical localization). The method has been used in recent work on many-body localization [arXiv:1403.7837].
description: 34 pages, 8 figures, clarifications and corrections for published version; more detail in Section 4.5
Towards Collisions of Inhomogeneous Shockwaves in AdS
Creators: name: Fernández, Daniel
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We perform a numerical simulation of the evolution of inhomogeneities with transverse profile in a collision of gravitational shockwaves in asymptotically anti-de Sitter spacetime. This constitutes a step closer towards an accurate holographic description of the thermalization of a strongly coupled plasma, which can model the dynamics of heavy ion collisions. The results indicate that the considered inhomogeneities typically become hydrodynamical earlier or at the same moment when hydrodynamics applies to the background, even though they decay slowly.
description: 11 pages, 4 figures; added figure and new results. Mathematica notebooks can be found at http://users.physics.uoc.gr/~fernandez/Page5.html
Multiple electromagnetically induced transparency without a control field in an atomic array coupled to a waveguide
Creators: name: Jia, W. Z.
name: Cai, Q. Y.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate multiple electromagnetically induced transparency (EIT) in a waveguide quantum electrodynamics (wQED) system containing an atom array. By analyzing the effective Hamiltonian of the system, we find that in terms of the single-excitation collective states, a properly designed $N$-atom array can be mapped into a driven ($N+1$)-level system that can produce multiple EIT-type phenomenon. The corresponding scattering spectra of the atom-array wQED system are discussed both in the single-photon sector and beyond the single-photon limit. The most significant feather of this type of EIT scheme is control-field-free, which may provide an alternative way to produce EIT-like phenomenon in wQED system when external control fields are not available. The results given in our paper may provide good guidance for future experiments on multiple EIT without a control field in wQED system.
description: 15 pages, 5 figures
title: Agentin und Gründerin: Maria Eisner
Creators: name: Hartmann, Reiner
Publisher: name: ZZF - Leibniz-Zentrum für Zeithistorische Forschung: Visual History
Year: 2023

description: Bis in die 1990er Jahre wurde die Rolle von Maria Eisner als „Secretary and Treasurer“ immer wieder mit Sekretärin und Schatzmeisterin oder Büroleiterin im Gründerkreis der legendären Magnum-Männer übersetzt. Jubiläumsschriften, Dokumentationen und Kurzbiografien weisen Eisner bis heute immer wieder als italienische Fotografin aus, verschweigen dabei aber Teile ihres Werdegangs oder deuten ihren Einfluss auf die von ihr gegründeten Agenturen und der dort arbeitenden Fotografen nur vage an. Infolge ihres frühen Rückzugs aus dem Agenturgeschäft im Jahr 1951 sind ihre Verdienste um Assignments, Editionen und Bildrechte im frühen Bildermarkt sowie ihre Bedeutung als wichtige Mentorin bedeutender Fotograf:innen bis heute wenig beachtet.
A hunter-gatherer-farmer population model: new conditional symmetries and exact solutions with biological interpretation
Creators: name: Cherniha, Roman
name: Davydovych, Vasyl'
Publisher: name: arXiv
Year: 2022
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: New Q-conditional (nonclassical) symmetries and exact solutions of the hunter-gatherer-farmer population model proposed by Aoki, Shida and Shigesada (Theor. Popul. Biol. 1996;50:1-17) are constructed. The main method used for the aforementioned purposes is an extension of the nonclassical method for system of partial differential equations. An analysis of properties of the exact solutions obtained and their biological interpretation are carried out. New results are compared with those derived in recent studies devoted to the same model.
On a nodal observer for a semilinear model for the flow in gas networks
Creators: name: Gugat, Martin
name: Giesselmann, Jan
name: Kunkel, Teresa
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35L04, 49K20

description: The flow of gas through networks of pipes can be modeled by coupling hyperbolic systems of partial differential equations that describe the flow through the pipes that form the edges of the graph of the network by algebraic node conditions that model the flow through the vertices of the graph. In the network, measurements of the state are available at certain points in space. Based upon these nodal observations, the complete system state can be approximated using an observer system. In this paper we present a nodal observer, and prove that the state of the observer system converges to the original state exponentially fast. Numerical experiments confirm the theoretical findings.
“The Exiled”: A work out of its time
Creators: name: Gil, Francisco
Publisher: name: figshare
Year: 2023
Subjects: Art history

description: "O Desterrado" is the life's work of its author, António Soares dos Reis - his masterpiece! It is also a landmark in the panorama of Portuguese sculpture of the second half of the 19th century, raising the academism of the time to a higher level. The work was begun in Italy in 1872 (where Soares dos Reis had gone to study on a scholarship and where he had the opportunity to develop and cement his classical academic training) and finished in Oporto.
Real-time exposure control and instrument operation with the NEID spectrograph GUI
Creators: name: Gupta, Arvind F.
name: Bender, Chad F.
name: Ninan, Joe P.
name: Logsdon, Sarah E.
name: Kanodia, Shubham
name: Golub, Eli
name: Higuera, Jesus
name: Klusmeyer, Jessica
name: Halverson, Samuel
name: Mahadevan, Suvrath
name: McElwain, Michael W.
name: Schwab, Christian
name: Stefansson, Gudmundur
name: Robertson, Paul
name: Roy, Arpita
name: Terrien, Ryan C.
name: Wright, Jason T.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The NEID spectrograph on the WIYN 3.5-m telescope at Kitt Peak has completed its first full year of science operations and is reliably delivering sub-m/s precision radial velocity measurements. The NEID instrument control system uses the TIMS package (Bender et al. 2016), which is a client-server software system built around the twisted python software stack. During science observations, interaction with the NEID spectrograph is handled through a pair of graphical user interfaces (GUIs), written in PyQT, which wrap the underlying instrument control software and provide straightforward and reliable access to the instrument. Here, we detail the design of these interfaces and present an overview of their use for NEID operations. Observers can use the NEID GUIs to set the exposure time, signal-to-noise ratio (SNR) threshold, and other relevant parameters for observations, configure the calibration bench and observing mode, track or edit observation metadata, and monitor the current state of the instrument. These GUIs facilitate automatic spectrograph configuration and target ingestion from the nightly observing queue, which improves operational efficiency and consistency across epochs. By interfacing with the NEID exposure meter, the GUIs also allow observers to monitor the progress of individual exposures and trigger the shutter on user-defined SNR thresholds. In addition, inset plots of the instantaneous and cumulative exposure meter counts as each observation progresses allow for rapid diagnosis of changing observing conditions as well as guiding failure and other emergent issues.
description: Published in Proceedings of the SPIE Astronomical Telescopes + Instrumentation, 2022; 12 pages
An Improved Analysis of (Variance-Reduced) Policy Gradient and Natural Policy Gradient Methods
Creators: name: Liu, Yanli
name: Zhang, Kaiqing
name: Başar, Tamer
name: Yin, Wotao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In this paper, we revisit and improve the convergence of policy gradient (PG), natural PG (NPG) methods, and their variance-reduced variants, under general smooth policy parametrizations. More specifically, with the Fisher information matrix of the policy being positive definite: i) we show that a state-of-the-art variance-reduced PG method, which has only been shown to converge to stationary points, converges to the globally optimal value up to some inherent function approximation error due to policy parametrization; ii) we show that NPG enjoys a lower sample complexity; iii) we propose SRVR-NPG, which incorporates variance-reduction into the NPG update. Our improvements follow from an observation that the convergence of (variance-reduced) PG and NPG methods can improve each other: the stationary convergence analysis of PG can be applied to NPG as well, and the global convergence analysis of NPG can help to establish the global convergence of (variance-reduced) PG methods. Our analysis carefully integrates the advantages of these two lines of works. Thanks to this improvement, we have also made variance-reduction for NPG possible, with both global convergence and an efficient finite-sample complexity.
description: NeurIPS 2020 (improve the proof of Lemma B.1 and Proposition G.1.)
Moisture content of oats in different methods of soil processing and irrigation treatment on the frozen soils of Yakutia of the Russian Federation
Creators: name: Maksimova Kharitina Ivanovna
name: Petrov Aleksey Anatolyevich
name: Nikolaeva Valentina Semenovna
name: Lukin Vladimir Nikolaevich
Publisher: name: International   Agricultural   Journal
Year: 2018
Subjects: vegetative irrigation
moisture charging irrigation
soil moisture
productive moisture
permafrost soil
resource-saving technology
integrated tillage aggregates
fertility
productivity
soil cultivation.

description: The article presents the results of field research on the moisture content of oats under various technologies of soil cultivation and vegetative and water recharge irrigation. The aim of the research is to study the effect of irrigation, resource-saving soil cultivation technology on the moisture regime, the fertility of permafrost soils and the biological productivity of oats. Field experiments on the influence of the irrigation regime on the yield of oats were carried out on the cryogenic meadow-chernozem loamy soils of the Khangalasskydistrict, according to the effect of resource-saving soil cultivation technology on soil fertility in the frozen taiga-pale soils of the Megino-Kangalasskydistrict of the Central Yakutia.Laboratory studies were carried out on the basis of a laboratory of biochemistry and mass analysis using the NIR SCANNER mo LCE 4250 spectral analyzer. In the conditions of the cryaridextracontinental climate of the Central Yakutia, the yield of crops depends on agroclimatic factors, where the average annual hydrothermal coefficient of the growing season is 0.90. The entire territory of the republic is included in the zone of continuous distribution of permafrost. The soil processes ensuring the growth and development of the vegetation cover are seasonal in nature and develop in the thawing soil of the summer, which is an active layer of permafrost landscapes.Low temperatures of the active layer interfere with the normal development of microbiological and biochemical processes in the soil. The studies included soil cultivation according to the traditional (plow processing) and resource-saving (multifunctional tillage aggregates) technologies, irrigation was carried out according to the main phases of plant development with the norm of 900 cubic meters per 1 hectare of the sowing area during the vegetation period and late-spring water-charging irrigation with the norm of 700 cubic meters per hectare.The efficiency of irrigation is established, which ensures an increase in the yield of green mass of oats by 20-30%. Resourcesaving soil cultivation technology contributes to an increase in the supply of productive moisture by 15.6%, a decrease in soil density by 4.2% and an increase in the yield of fodder crops. To improve the agrophysical properties of permafrost soils and increase the yield of fodder crops, it is recommended to use multifunctional soil cultivators and to irrigate oats on green mass.
The impact of bacterial fertilizer and humate on plants accumulation of essential microelements
Creators: name: Zamana, Svetlana
name: Golubkina, Nadezhda
Publisher: name: International   Agricultural   Journal
Year: 2018
Subjects: humate
Bacillus sp.
cabbage
leek
garlic
selenium
zink
copper

description: Three kinds of vegetable crops have been studied, including Japanese cabbage, leek and garlic, grown on turf-podzol soils in Moscow Region. The influence of bacterial fertilizer Biostar containing produced in Belgium Bacillus sp., and sodium humate (Krasnoyarsk production) on plants accumulation of selenium, zinc and copper, was investigated. It was revealed that both fertilizers increased accumulated essential microelements in the quantities depending on the vegetable kind. The level of selenium accumulation was the lowest, and practically no distinctions were observed at humate and Biostar application. Changes of accumulation levels of zinc and copper were more considerable. Zinc and copper accumulation levels were considerably higher when applying Biostar compared to humate, especially for Japanese cabbage and garlic.
Entanglement degradation in multi-event horizon spacetimes
Creators: name: Bhattacharya, Sourav
name: Joshi, Nitin
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the degradation of quantum entanglement in the Schwarzschild-de Sitter black hole spacetime, by studying the mutual information and the logarithmic negativity for maximally entangled, bipartite states for massless minimal scalar fields. This spacetime is endowed with a black hole as well as a cosmological event horizon, giving rise to particle creation at two different temperatures. We consider two independent descriptions of thermodynamics and particle creation in this background. The first involves thermal equilibrium of an observer with either of the horizons. We show that as of the asymptotically flat/anti-de Sitter black holes, in this case the entanglement or correlation degrades with increasing Hawking temperatures. The second treats both the horizons combined in order to define a total entropy and an effective equilibrium temperature. We present a field theoretic derivation of this effective temperature and show that unlike the usual cases, the particle creation does not occur here in causally disconnected spacetime wedges but instead in a single region. Using the associated vacua, we show that in this scenario the entanglement never degrades but increases with increasing black hole temperature and holds true no matter how hot the black hole becomes or how small the cosmological constant is. We argue that this phenomenon can have no analogue in the asymptotically flat/anti-de Sitter black hole spacetimes.
description: v2, 9pp, 3 figures; Added references and many clarifications; Accepted in PRD; We dedicate this manuscript to late Prof. Thanu Padmanabhan
The utmost rigidity property for quadratic foliations on $\mathbb{P}^2$ with an invariant line
Creators: name: Ramirez, Valente
Publisher: name: arXiv
Year: 2014
Subjects: subject: Complex Variables (math.CV)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37F75

description: In this work we consider holomorphic foliations of degree two on the projective plane $\mathbb{P}^2$ having an invariant line. In a suitable choice of affine coordinates these foliations are induced by a quadratic vector field over the affine part in such a way that the invariant line corresponds to the line at infinity. We say that two such foliations are topologically equivalent provided there exists a homeomorphism of $\mathbb{P}^2$ which brings the leaves of one foliation onto the leaves of the other and preserves orientation both on the ambient space and on the leaves. The main result of this paper is that in the generic case two such foliations may be topologically equivalent if and only if they are analytically equivalent. In fact, it is shown that the analytic conjugacy class of the holonomy group of the invariant line is the modulus of both topological and analytic classification. We obtain as a corollary that two generic orbitally topologically equivalent quadratic vector fields on $\mathbb{C}^2$ must be affine equivalent. This result improves, in the case of quadratic foliations, a well-known result by Ilyashenko that claims that two generic and topologically equivalent foliations with an invariant line at infinity are affine equivalent provided they are close enough in the space of foliations and the linking homeomorphism is close enough to the identity map on $\mathbb{P}^2$.
description: 48 pages
Transport Coefficients of Black MQGP M3-Branes
Creators: name: Dhuria, Mansi
name: Misra, Aalok
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The SYZ mirror, in the `delocalized limit' of [1], of (M)N (fractional)D3-branes, and wrapped N_f flavor D7-branes in the presence of a black-hole resulting in a non-Kaehler resolved warped deformed conifold (NKRWDC) in [2], was carried out in [3] and resulted in black M3-branes. The uplift, if valid globally(like [4] for fractional D3 branes in conifolds), asymptotes to M5-branes wrapping a two-cycle (homologously an (large) integer sum of two-spheres) in AdS_5xM_6. Interestingly, in the MQGP limit, assuming the deformation > resolution, by estimating the five SU(3) structure torsion (τ) classes W_{1,2,3,4,5} we show that τ\in W_4+W_5: 2/3 Re(W^3bar_5)=W^3bar_4 in the UV, implying the NKRWDC locally preserves SUSY. Further, the local T^3 of [3] in the large-r limit and the `MQGP' limit of [3], satisfies the same conditions as the maximal T^2-invariant special Lagrangian three-cycle of T^*(S^3) of [6], partly justifying use of local SYZ mirror symmetry in [3]. Using the Ouyang embedding in the DBI action of a D7-brane or by dimensionally reducing the 11-dimensional EH action to five (R^{1,3},r) dimensions, we then calculate a variety of gauge and metric-perturbation-modes' two-point functions using the prescription of [5], and show: (i) diffusion constant D~1/T, (ii) the electrical conductivity σ~T, (iii) the charge susceptibility χ~ T^2, (iv) [using (i) - (iii)] the Einstein's relation σ/χ=D, is indeed satisfied, (v) the R-charge diffusion constant D_R~1/T, and (vi) the possibility of generating η/s=1/4pi from solutions to the vector and tensor mode metric perturbations' EOMs, separately. All results are also valid in the limit of [2].
description: v4:1+50 pages, correction in torsion classes: type IIB, locally, has SUSY in the UV
Toeplitz algebras over Fock and Bergman spaces
Creators: name: Wu, Shengkun
name: Zhao, Xianfeng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Functional Analysis (math.FA)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics

description: In this paper, we study Toeplitz algebras generated by certain class of Toeplitz operators on the $p$-Fock space and the $p$-Bergman space with $1
description: 38 pages
Integral assessment of food security in the Amur Region
Creators: name: S. A. Rodomanskaya
Publisher: name: International   Agricultural   Journal
Year: 2018
Subjects: region
food facility
self-sufficiency
independence (dependence)
sufficiency
availability
quality of agricultural products
level of self-sufficiency

description: The state estimate of the regional food security and performing functions of food demand and supply have been made. The ensuring of the region with agricultural products of its own production was comprehensively assessed by the system of generalized indicators. The assessment was conducted on the basis of generally accepted criteria reflecting all the main aspects of food security, namely, self-sufficiency, independence (dependence), sufficiency, availability and quality of products.
Coordination for Connected and Automated Vehicles at Non-signalized Intersections: A Value Decomposition-based Multiagent Deep Reinforcement Learning Approach
Creators: name: Guo, Zihan
name: Wu, Yan
name: Wang, Lifang
name: Zhang, Junzhi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: The recent proliferation of the research on multi-agent deep reinforcement learning (MDRL) offers an encouraging way to coordinate multiple connected and automated vehicles (CAVs) to pass the intersection. In this paper, we apply a value decomposition-based MDRL approach (QMIX) to control various CAVs in mixed-autonomy traffic of different densities to efficiently and safely pass the non-signalized intersection with fairish fuel consumption. Implementation tricks including network-level improvements, Q value update by TD ($λ$), and reward clipping operation are added to the pure QMIX framework, which is expected to improve the convergence speed and the asymptotic performance of the original version. The efficacy of our approach is demonstrated by several evaluation metrics: average speed, the number of collisions, and average fuel consumption per episode. The experimental results show that our approach's convergence speed and asymptotic performance can exceed that of the original QMIX and the proximal policy optimization (PPO), a state-of-the-art reinforcement learning baseline applied to the non-signalized intersection. Moreover, CAVs under the lower traffic flow controlled by our method can improve their average speed without collisions and consume the least fuel. The training is additionally conducted under the doubled traffic density, where the learning reward converges. Consequently, the model with maximal reward and minimum crashes can still guarantee low fuel consumption, but slightly reduce the efficiency of vehicles and induce more collisions than the lower-traffic counterpart, implying the difficulty of generalizing RL policy to more advanced scenarios.
Provision of effective regulation of land relation and efficient agricultural land use
Creators: name:  S. N. Volkov
name: A. A. Fomin
Publisher: name: International   Agricultural   Journal
Year: 2018
Subjects: regulation of land relations
agricultural lands
land law
land protection
land use planning
cropland
soil fertility

description: Agro-industrial complex of our country has huge potential for agriculture development providing that there is effective regulation of land relations, and efficient, scientifically based land use focused on preservation, maintenance, and boost of the most valuable land property soil fertility. Russia possesses 9% of the world's croplands, while it produces just about 2% of the world's agricultural output. Total agricultural land is 383.7 mln ha (22.4% of Russia's land resources). Over the past 25 years total arable land has decreased from 132.3 to 115.1 mln ha. Sustainable social and economic development of Russia is impossible without the efficient use of agricultural land. It is the key element in ensuring of food security, which is one of the major components of the national security, incremental growth and development of the economy, and which is the way of life and the means to improve the quality of life of a large portion of the home population. Therefore the primary tasks and objectives of the efficient use of these lands are: necessity of preservation and efficient use of agricultural and cultivated land, assistance to growth in production of high-quality and eco-friendly agricultural commodities while conserving soil and meeting the requirements of the environmental regulations. Analysis of the trends and problems of the land relations development is based upon the data of the studies funded through the grants from the President of the Russian Federation, and upon the recommendations deliv-ered during the Parliamentary hearings and round tables held at the State Duma of the Federal Assembly of the Russian Federation in 2017-2018.