cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Pauli energy contribution to nucleus-nucleus interaction
Creators: name: Umar, A. S.
name: Simenel, C.
name: Godbey, K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Background: The Pauli exclusion principle plays a crucial role as a building block of many-body quantal systems comprised of fermions. It also induces a "Pauli repulsion" in the interaction between di-nuclear systems. It has been shown in [Phys. Rev. C 95, 031601 (2017)] that the Pauli repulsion widens the nucleus-nucleus potential barrier, thus hindering sub-barrier fusion. Purpose: To investigate the proton and neutron contributions to the Pauli repulsion, both in the bare potential neglecting shape polarization and transfer between the reactants, as well as in the dynamical potential obtained by accounting for such dynamical rearrangements. Methods: As the basis of our study we utilize the Pauli kinetic energy (PKE) obtained by studying the nuclear localization function (NLF). Recently this approach has been generalized to incorporate all of the dynamical and time-odd terms present in the nuclear energy density functional. This approach is employed in the DCFHF and DC-TDHF methods. Results: The PKE spatial distribution shows that a repulsion occurs in the neck between the nuclei when they first touch. Inside the barrier, neutrons can contribute significantly more to the Pauli repulsion in neutron-rich systems. Dynamical effects tend to lower the Pauli repulsion near the barrier. Proton and neutron dynamical contributions to the PKE significantly differ inside the barrier for asymmetric collisions, which is interpreted as an effect of multinucleon transfer. Conclusions: The PKE is shown to make a significant contribution to nuclear interaction potentials. Protons and neutrons can play very different roles in both the bare potential and in the dynamical rearrangement. Further microscopic studies are required to better understand the role of transfer and to investigate the effect of pairing and deformation.
description: 11 pages, 5 figures
Growth and yield relationships in the garden pea (Pisum stivum L.)
Creators: name: Fletcher-Paul, Lystra Mona
Publisher: name: University of British Columbia
Year: 2010

description: Recently developed methods of growth and yield analysis were applied to the results of a field experiment to determine (i) the effect of seed inoculation on the growth and yield of two cultivairs of garden pea (Pisum sativum L.) - 'Dark Skin Perfection' (DSP) and 'Early Frosty' (EF), (ii) the physiological basis for yield variability and (iii) the dynamics of reproductive growth in the pea. Seed inoculation had no noticeable effect on yield. There were, however, significant cultivar differences--DSP was larger, matured later but had lower yields than EF. Growth analysis revealed that these differences were due to the extended vegetative growth phase, higher leaf area ratio and lower harvest index of DSP. Further analysis indicated that EF had a more efficient growth strategy, as the maximum rate of partitioning of dry matter into the reproductive structures coincided with high leaf activity. By contrast maximum sink activity in DSP occurred during leaf senescence. Stem length, average leaf area and inverse leaf weight ratio were the main components of biomass variability. Yield variation, however, was affected indirectly by stem length, average leaf area, reproductive effort and average seed weight, and directly by the number of nodes, pod set and inverse leaf weight ratio. These results imply that the supply of photosynthetic material is important for increased pea yields. Significant negative correlations between vegetative components and average seed weight suggest compensation and competition between these components. Thus, yield improvement may be attainable by (1) enhancing the component which is unaffected by this compensation or (2) reducing the competition by shifting the equilibrium. Two crucial periods when source supply may affect yield were detected during the reproductive phase. The first period (61 days after planting in DSP and 55 days after planting in EF) was more pronounced in DSP. In the second phase (day 75 for DSP and 65 for EF) seed growth became important and seemed to influence leaf activity. This finding suggests that the rate of canopy establishment is as important as the rate of pod filling for improving yields. A dynamic model simulating pod yield in relation to source supply is outlined.
Ambient awareness for agricultural robotic vehicles
Creators: name: Reina, Giulio
name: Milella, Annalisa
name: Rouveure, Raphael
name: Nielsen, Michael
name: Worst, Rainer
name: Blas, Morten R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In the last few years, robotic technology has been increasingly employed in agriculture to develop intelligent vehicles that can improve productivity and competitiveness. Accurate and robust environmental perception is a critical requirement to address unsolved issues including safe interaction with field workers and animals, obstacle detection in controlled traffic applications, crop row guidance, surveying for variable rate applications, and situation awareness, in general, towards increased process automation. Given the variety of conditions thatmay be encountered in the field, no single sensor exists that can guarantee reliable results in every scenario. The development of a multi-sensory perception systemto increase the ambient awareness of an agricultural vehicle operating in crop fields is the objective of the Ambient Awareness for Autonomous Agricultural Vehicles (QUAD-AV) project. Different onboard sensor technologies, namely stereovision, LIDAR, radar, and thermography, are considered. Novel methods for their combination are proposed to automatically detect obstacles and discern traversable from non-traversable areas. Experimental results, obtained in agricultural contexts, are presented showing the effectiveness of the proposed methods.
Additional file 3 of Reference values for fetal Doppler-based cardiocirculatory indices in monochorionic-diamniotic twin pregnancy
Creators: name: Chongsomboonsuk, Thananan
name: Phithakwatchara, Nisarat
name: Nawapun, Katika
name: Viboonchart, Sommai
name: Jaingam, Suparat
name: Wataganara, Tuangsit
Publisher: name: figshare
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Additional file 3: Supplementary Table S3. Predicted E/A ratio of mitral and tricuspid valves of centiles by gestational age.
Neutrino oscillograms of the Earth: effects of 1-2 mixing and CP-violation
Creators: name: Akhmedov, Evgeny Kh.
name: Maltoni, Michele
name: Smirnov, Alexei Yu.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We develop a comprehensive description of three flavor neutrino oscillations inside the Earth in terms of neutrino oscillograms in the whole range of nadir angles and for energies above 0.1 GeV. The effects of the 1-2 mass splitting and mixing as well the interference of the 1-2 and 1-3 modes of oscillations are quantified. The 1-2 mass splitting and mixing lead to the appearance, apart from the resonance MSW peaks, of the parametric resonance peak for core-crossing trajectories at E_nu ~= 0.2 GeV. We show that the interference effects, in particular CP violation, have a domain structure with borders determined by the solar and atmospheric magic lines and the lines of the interference phase condition. The dependence of the oscillograms on the Dirac CP-violating phase is studied. We show that for sin^2(2 theta13) < 0.1 the strongest dependence of the oscillograms on delta is in the 1-2 and 1-3 resonance regions.
description: 49 pages, LaTeX file using JHEP style, 13 figures included. Final version to appear in JHEP
Initial logarithmic Lie algebras of hypersurface singularities
Creators: name: Granger, Michel
name: Schulze, Mathias
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 32S65, 17B66, 17B20

description: We introduce a Lie algebra of initial terms of logarithmic vector fields along a hypersurface singularity. Extending the formal structure theorem in [GS06, Thm. 5.4], we show that the completely reducible part of its linear projection lifts formally to a linear Lie algebra of logarithmic vector fields. For quasihomogeneous singularities, we prove convergence of this linearization. We relate our construction to the work of Hauser and M"uller [M"ul86, HM89] on Levi subgroups of automorphism groups of singularities, which proves convergence even for algebraic singularities. Based on the initial Lie algebra, we introduce a notion of reductive hypersurface singularity and show that any reductive free divisor is linear. As an application, we describe a lower bound for the dimension of hypersurface singularities in terms of the semisimple part of their initial Lie algebra.
description: 14 pages
The Rahman Polynomials Are Bispectral
Creators: name: Grünbaum, F. Alberto
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In a very recent paper, M. Rahman introduced a remarkable family of polynomials in two variables as the eigenfunctions of the transition matrix for a nontrivial Markov chain due to M. Hoare and M. Rahman. I indicate here that these polynomials are bispectral. This should be just one of the many remarkable properties enjoyed by these polynomials. For several challenges, including finding a general proof of some of the facts displayed here the reader should look at the last section of this paper.
description: This is a contribution to the Vadim Kuznetsov Memorial Issue on Integrable Systems and Related Topics, published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Additional file 4 of Reference values for fetal Doppler-based cardiocirculatory indices in monochorionic-diamniotic twin pregnancy
Creators: name: Chongsomboonsuk, Thananan
name: Phithakwatchara, Nisarat
name: Nawapun, Katika
name: Viboonchart, Sommai
name: Jaingam, Suparat
name: Wataganara, Tuangsit
Publisher: name: figshare
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Additional file 4: Supplementary Table S4. Predicted left myocardial performance indices of centiles by gestational age.
Adiabatically switched-on electrical bias in continuous systems, and the Landauer-Buttiker formula
Creators: name: Cornean, Horia D.
name: Duclos, Pierre
name: Nenciu, Gheorghe
name: Purice, Radu
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Consider a three dimensional system which looks like a cross-connected pipe system, i.e. a small sample coupled to a finite number of leads. We investigate the current running through this system, in the linear response regime, when we adiabatically turn on an electrical bias between leads. The main technical tool is the use of a finite volume regularization, which allows us to define the current coming out of a lead as the time derivative of its charge. We finally prove that in virtually all physically interesting situations, the conductivity tensor is given by a Landauer-B{ü}ttiker type formula.
description: 20 pages, submitted
Additional file 5 of Reference values for fetal Doppler-based cardiocirculatory indices in monochorionic-diamniotic twin pregnancy
Creators: name: Chongsomboonsuk, Thananan
name: Phithakwatchara, Nisarat
name: Nawapun, Katika
name: Viboonchart, Sommai
name: Jaingam, Suparat
name: Wataganara, Tuangsit
Publisher: name: figshare
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Additional file 5: Supplementary Table S5. Predicted right myocardial performance indices of centiles by gestational age.
Cosmology of strongly interacting fermions in the early universe
Creators: name: Domènech, Guillem
name: Sasaki, Misao
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In view of growing interest in long range scalar forces in the early universe to generate primordial black holes, we study in detail the general relativistic formulation of a Fermi gas interacting with a scalar field in cosmology. Our main finding is that the Yukawa interaction leads to a solution where the scalar field oscillates around zero fermion mass and all energy densities decay as radiation. On one hand, we show that if the Fermi gas starts relativistic, it could stay relativistic. On the other hand, if the fermions are initially non-relativistic, they remain non-relativistic for all practical purposes. We find that in both cases the energy density of the fermions and the scalar field decays as radiation. In the non-relativistic case, this is due to an oscillating and decaying effective mass. Such background dynamics questions whether there is a substantial enhancement of the fermion density fluctuations in the non-relativistic case. Our work can be easily extended to more general field dependent fermion mass. The analysis of the cosmological perturbations will be presented in a follow-up work.
Order of current variance and diffusivity in the rate one totally asymmetric zero range process
Creators: name: Balazs, Marton
name: Komjathy, Julia
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60K35 (Primary); 82C22 (Secondary)

description: We prove that the variance of the current across a characteristic is of order t^{2/3} in a stationary constant rate totally asymmetric zero range process, and that the diffusivity has order t^{1/3}. This is a step towards proving universality of this scaling behavior in the class of one-dimensional interacting systems with one conserved quantity and concave hydrodynamic flux. The proof proceeds via couplings to show the corresponding moment bounds for a second class particle. We build on the methods developed by Balazs-Seppalainen for asymmetric simple exclusion. However, some modifications were needed to handle the larger state space. Our results translate into t^{2/3}-order of variance of the tagged particle on the characteristics of totally asymmetric simple exclusion.
description: 23 pages; some minor typos corrected
Smectic vortex glass
Creators: name: Radzihovsky, Leo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We show that in type-II superconductors a magnetic field applied transversely to correlated columnar disorder, drives a phase transition to a distinct "smectic" vortex glass (SmVG) state. SmVG is characterized by an infinitely anisotropic electrical transport, resistive (dissipationless) for current perpendicular to (along) columnar defects. Its positional order is also quite unusual, long-ranged with true Bragg peaks along columnar defects and logarithmically rough vortex lattice distortions with quasi-Bragg peaks transverse to columnar defects. For low temperatures and sufficiently weak columnar-only disorder, SmVG is a true topologically-ordered "Bragg glass", characterized by a vanishing dislocation density. At sufficiently long scales the residual ever-present point disorder converts this state to a more standard, but highly anisotropic vortex glass.
description: 11 pages, 3 figures
Salah Kaprah Opini Publik tentang BPK
Creators: name: Atmaja, A.P. Edi
Publisher: name: Zenodo
Year: 2016
Subjects: Badan Pemeriksa Keuangan
Indonesian supreme audit institution
Public sector audit
Pemeriksaan keuangan negara

description: Suatu pagi di Semarang, saya iseng menyetel fasilitas radio di telepon seluler. Pada frekuensi 99,3 FM, terdengar stasiun Best FM yang tengah menyiarkan monolog seseorang bernama Om Bob. Tema yang diangkat dalam monolog saat itu ialah iklan Kementerian Pendidikan dan Kebudayaan entah di mana soal perolehan opini Wajar Tanpa Pengecualian dari Badan Pemeriksa Keuangan (BPK).

Lihat selengkapnya: https://apeatmaja.wordpress.com/2019/01/12/salah-kaprah-opini-publik-tentang-opini-bpk/
Performance-aware placement and chaining scheme for virtualized network functions: a particle swarm optimization approach
Creators: name: Asgari, Samane
name: Jamali, Shahram
name: Fotohi, Reza
name: Nooshyar, Mahdi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Network functions virtualization (NFV) is a new concept that has received the attention of both researchers and network providers. NFV decouples network functions from specialized hardware devices and virtualizes these network functions as software instances called virtualized network functions (VNFs). NFV leads to various benefits, including more flexibility, high resource utilization, and easy upgrades and maintenances. Despite recent works in this field, placement and chaining of VNFs need more attention. More specifically, some of the existing works have considered only the placement of VNFs and ignored the chaining part. So, they have not provided an integrated view of host or bandwidth resources and propagation delay of paths. In this paper, we solve the VNF placement and chaining problem as an optimization problem based on the particle swarm optimization (PSO) algorithm. Our goal is to minimize the required number of used servers, the average propagation delay of paths, and the average utilization of links while meeting network demands and constraints. Based on the obtained results, the algorithm proposed in this study can find feasible and high-quality solutions.
description: 22 pages, 10 Figures, 3 Tables, J Supercomput (2021)
Development of All-Diamond Scanning Probes Based on Faraday Cage Angled Etching Techniques
Creators: name: Giese, C.
name: Quellmalz, P.
name: Knittel, P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We are proposing a novel fabrication method for single crystal diamond scanning probes, exploiting the method of Faraday cage angled etching (FCAE). Electron-beam lithography (EBL) and inductively coupled plasma (ICP) etching as state-of-the-art method is often limiting the achievable diamond structure geometries in aspect ratio and complexity. This poses challenges, e.g., for realizing nitrogen vacancy (NV) centre magnetometry scanning probes. Combining a planar design with FCAE offers several advantages over the established fabrication technology of nano-opto-mechanical diamond devices. Here, we report on the direct comparison of both approaches and present first proof-of-concept FCAE-prototypes for scanning probe applications.
description: MRS Advances issue of MRS fall meeting 2019
A better measure of relative prediction accuracy for model selection and model estimation
Creators: name: Tofallis, Chris
Publisher: name: arXiv
Year: 2021
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Surveys show that the mean absolute percentage error (MAPE) is the most widely used measure of forecast accuracy in businesses and organizations. It is however, biased: When used to select among competing prediction methods it systematically selects those whose predictions are too low. This is not widely discussed and so is not generally known among practitioners. We explain why this happens. We investigate an alternative relative accuracy measure which avoids this bias: the log of the accuracy ratio: log (prediction / actual). Relative accuracy is particularly relevant if the scatter in the data grows as the value of the variable grows (heteroscedasticity). We demonstrate using simulations that for heteroscedastic data (modelled by a multiplicative error factor) the proposed metric is far superior to MAPE for model selection. Another use for accuracy measures is in fitting parameters to prediction models. Minimum MAPE models do not predict a simple statistic and so theoretical analysis is limited. We prove that when the proposed metric is used instead, the resulting least squares regression model predicts the geometric mean. This important property allows its theoretical properties to be understood.
Deep inelastic scattering from gauge string duality in D3-D7 brane model
Creators: name: Bayona, C. A. Ballon
name: Boschi-Filho, Henrique
name: Braga, Nelson R. F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate deep inelastic structure functions for mesons in the D3-D7 brane model, that incorporates flavour to the AdS/CFT correspondence. We consider two different prescriptions for the hadronic current dual: a gauge field in the AdS bulk and a gauge field on the D7 brane. We also calculate elastic form factors in both cases. We compare our results with other holographic models.
description: V2: We included a new section with several plots comparing the structure functions of the models considered. We moved some calculation details to an appendix. Typos corrected. One reference included. 18 pages. 3 figures containing 9 plots
Improved short-range correlations and 0nbb nuclear matrix elements of 76Ge and 82Se
Creators: name: Kortelainen, Markus
name: Suhonen, Jouni
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We calculate the nuclear matrix elements of the neutrinoless double beta ($0νββ$) decays of $^{76}$Ge and $^{82}$Se for the light-neutrino exchange mechanism. The nuclear wave functions are obtained by using realistic two-body forces within the proton-neutron quasiparticle random-phase approximation (pnQRPA). We include the effects that come from the finite size of a nucleon, from the higher-order terms of nucleonic weak currents, and from the nucleon-nucleon short-range correlations. Most importantly, we improve on the presently available calculations by replacing the rudimentary Jastrow short-range correlations by the more advanced unitary correlation operator method (UCOM). The UCOM corrected matrix elements turn out to be notably larger in magnitude than the Jastrow corrected ones. This has drastic consequences for the detectability of $0νββ$ decay in the present and future double beta experiments.
description: 5 pages, 2 figures, to appear in Physical Review C (Rapid Communication) 2007
Improved measurement of time-dependent CP violation in B0 -> J/Psi pi0 decays
Creators: name: Lee, S. E.
name: Miyabayashi, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report improved measurements of time-dependent CP violation parameters for $B^0(\bar{B}^0) \to J/ψπ^0$ decay. This analysis is based on 535 million $B\bar{B}$ pairs accumulated at the $Υ(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy e^+e^- collider. From the distribution of proper time intervals between the two B decays, we obtain the following CP violation parameters $\mathcal{S}_{J/ψπ^0} = -0.65\pm0.21 (\rm{stat})\pm0.05 (\rm{syst})$ and $\mathcal{A}_{J/ψπ^0} = +0.08\pm0.16 (\rm{stat})\pm0.05 (\rm{syst})$, which are consistent with Standard Model expectations.
description: Resubmitted to PRD(RC), including 4 figures, 6pages Revision has been made according to communication with PRD referees
Two-fluid treatment of whistling behaviour and the warm Appleton-Hartree extension
Creators: name: De Jonghe, Jordi
name: Keppens, Rony
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: As an application of the completely general, ideal two-fluid analysis of waves in a warm ion-electron plasma, where six unique wave pair labels (S, A, F, M, O, and X) were identified, we here connect to the vast body of literature on whistler waves. We show that all six mode pairs can demonstrate whistling behaviour, when we allow for whistling of both descending and ascending frequency types, and when we study the more general case of oblique propagation to the background magnetic field. We show how the general theory recovers all known approximate group speed expressions for both classical whistlers and ion cyclotron whistlers, which we here extend to include ion contributions and deviations from parallel propagation. At oblique angles and at perpendicular propagation, whistlers are investigated using exact numerical evaluations of the two-fluid dispersion relation and their group speeds under Earth's magnetosphere conditions. This approach allows for a complete overview of all whistling behaviour and we quantify the typical frequency ranges where they must be observable. We use the generality of the theory to show that pair plasmas in pulsar magnetospheres also feature whistling behaviour, although not of the classical type at parallel propagation. Whistling of the high frequency modes is discussed as well, and we give the extension of the Appleton-Hartree relation for cold plasmas, to include the effect of a non-zero thermal electron velocity. We use it to quantify the Faraday rotation effect at all angles, and compare its predictions between the cold and warm Appleton-Hartree equation.
description: 27 pages, 13 figures. Accepted for publication by Journal of Geophysical Research: Space Physics
August : Resilient and Sustainable Interconnected Critical Infrastructure Systems - Part 1
Creators: Wentao Zhu
Daniel G. Costa
Alireza Fereidunian
Amir Darbandsari
Mahdi Nozarian
Ömer Sen
Dennis van der Velde
Philipp	 Linnartz
Zhanlian Li
Hao-Tian Zhang
Publisher: name: IEEE
Year: 2022

Newsletter
This is the first issue on Resilient and Sustainable Interconnected Critical Infrastructure Systems featuring a foreword by Wentao Zhu, "Tackling emergencies through multi-system perspectives of smart cities", "Data-Driven Maintenance Management of Smart Cities Critical Infrastructures", "Investigating Urban Civil Power Infrastructure Resilience Using Cyber-Physical Co-Simulation Environments", and "Two main Events related to Resilient and Sustainable Interconnected Critical Infrastructure Systems".
Strictly and asymptotically scale-invariant probabilistic models of $N$ correlated binary random variables having {\em q}--Gaussians as $N\to \infty$ limiting distributions
Creators: name: Rodríguez, A.
name: Schwämmle, V.
name: Tsallis, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In order to physically enlighten the relationship between {\it $q$--independence} and {\it scale-invariance}, we introduce three types of asymptotically scale-invariant probabilistic models with binary random variables, namely (i) a family, characterized by an index $ν=1,2,3,...$, unifying the Leibnitz triangle ($ν=1$) and the case of independent variables ($ν\to\infty$); (ii) two slightly different discretizations of $q$--Gaussians; (iii) a special family, characterized by the parameter $χ$, which generalizes the usual case of independent variables (recovered for $χ=1/2$). Models (i) and (iii) are in fact strictly scale-invariant. For models (i), we analytically show that the $N \to\infty$ probability distribution is a $q$--Gaussian with $q=(ν-2)/(ν-1)$. Models (ii) approach $q$--Gaussians by construction, and we numerically show that they do so with asymptotic scale-invariance. Models (iii), like two other strictly scale-invariant models recently discussed by Hilhorst and Schehr (2007), approach instead limiting distributions which are {\it not} $q$--Gaussians. The scenario which emerges is that asymptotic (or even strict) scale-invariance is not sufficient but it might be necessary for having strict (or asymptotic) $q$--independence, which, in turn, mandates $q$--Gaussian attractors.
description: The present version is accepted for publication in JSTAT
Slides for: PANNs: Large-Scale Pretrained Audio Neural Networks for Audio Pattern Recognition
Creators: Dr. Quiqiang Kong
Publisher: name: IEEE
Year: 2022

Slides for: SPS Webinar, August 17, 2022, Dr. Quiqiang Kong
Audio pattern recognition is an important research topic in the machine learning area, and includes several tasks such as audio tagging, acoustic scene classification, music classification, speech emotion classification and sound event detection. Recently, neural networks have been applied to tackle audio pattern recognition problems. However, previous systems are built on specific datasets with limited durations. Recently, in computer vision and natural language processing, systems pretrained on large-scale datasets have generalized well to several tasks. However, there is limited research on pretraining systems on large-scale datasets for audio pattern recognition. In this work, we propose pretrained audio neural networks (PANNs) trained on the large-scale AudioSet dataset. These PANNs are transferred to other audio related tasks. We investigate the performance and computational complexity of PANNs modeled by a variety of convolutional neural networks. We propose an architecture called Wavegram-Logmel-CNN using both log-mel spectrogram and waveform as input feature. Our best PANN system achieves a state-of-the-art mean average precision (mAP) of 0.439 on AudioSet tagging, outperforming the best previous system of 0.392. We transfer PANNs to six audio pattern recognition tasks, and demonstrate state-of-the-art performance in several of those tasks. We have released the source code and pretrained models of PANNs.
On the Gaussian q-Distribution
Creators: name: Diaz, Rafael
name: Pariguan, Eddy
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: We present a study of the Gaussian q-measure introduced by Diaz and Teruel from a probabilistic and from a combinatorial viewpoint. A main motivation for the introduction of the Gaussian q-measure is that its moments are exactly the q-analogues of the double factorial numbers. We show that the Gaussian q-measure interpolates between the uniform measure on the interval [-1,1] and the Gaussian measure on the real line.
description: 12 pages, 5 figures
Electrolytic Capacitorless Pulsating DC Link Three-Phase Inverter for Low Voltage Battery EVs-Slides
Creators: Akshay Kumar Rathore
Publisher: name: IEEE
Year: 2022

TEC Webinar Video
Abstract: Sinusoidal Pulse Width Modulation (SPWM) and space vector modulation (SVM) have been widely adopted for three-phase sine AC output from a fixed dc-link if the dc-link voltage is much higher than desired three-phase output. However, if the source/dc-link voltage is lower than the load voltage, then frond-end dc/dc converters becomes necessary leading to the design of the multistage power conversion system. This is the case with the 48 V electrical vehicles (EVs). To implement the propulsion drive system with existing SVM or carrier-based modulation, a large costly unreliable electrolytic capacitor is employed to develop a high voltage intermediate dc link. Novel Single-reference-Six-Pulse Modulation (SRSPM) eliminates the dc-link electrolytic capacitor allowing pulsating dc-link voltage waveform at the inverter input. It substantially reduces the cost, size, and weight and improves the reliability of the system. This novel SRSPM is simple and results in a saving of 87% switching losses. The concept has been experimentally demonstrated with closed-loop control to achieve 97% efficiency in the lab.
Identifying critical elements in drinking water distribution networks using graph theory
Creators: name: Meijer, Didrik
name: Post, Johan
name: Hoek, Jan Peter Van Der
name: Korving, Hans
name: Langeveld, Jeroen
name: Clemens, François
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Space Science
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer

description: Drinking water distribution networks (WDNs) are a crucial infrastructure for life in cities. Deterioration of this ageing, and partly hidden from view, infrastructure can result in losses due to leakage and an increased contamination risk. To counteract this, maintenance strategies are required to maintain the service level. Information on the most critical elements of a WDN, with respect to the functioning of the system as a whole, is essential for prioritising maintenance or rehabilitation activities. In this study a Graph theory based method is developed and applied for efficiently identifying the most critical elements. The main advantage of this method is that it avoids the need to perform elaborate hydrodynamic model calculations. Instead, the structure of the network is the main starting point. The results show that the structure of the network is more decisive than the hydraulics with respect to the criticality of the system’s performance as a whole. Results depict that the suggested approach is applicable not only to the main (primary) network, but also to the capillaries which are normally beyond the scope of the traditional methods applied so-far because of the complexity of the networks and the required calculation time.
Slides for: Scalable EV Charging Infrastructure for Smart Cities
Creators: Binesh Kumar
Publisher: name: IEEE
Year: 2022

Slides for Webinar: Scalable EV Charging Infrastructure for Smart Cities
As EV adoption continues to rise on an astronomical scale, the focus has shifted to setting up wide-scale EV Charging infrastructure. Although EV Charging has been around for a long time, it was operated on a limited scale due to less number of EVs on the road. Hence traditional EV charging design scheme has to be revisited to ensure future scalability, safety, security, and availability needs are met. In this webinar, we will cover the different aspects of EV charging, review the basics and understand what a scalable EV Charging scheme looks like, one that will help enable the smart cities of the future.
Systematic uncertainties of hadron parameters obtained with QCD sum rules
Creators: name: Lucha, Wolfgang
name: Melikhov, Dmitri
name: Simula, Silvano
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the uncertainties of the determination of the ground-state parameters from Shifman-Vainshtein-Zakharov (SVZ) sum rules, making use of the harmonic-oscillator potential model as an example. In this case, one knows the exact solution for the polarization operator $Π(μ)$, which allows one to obtain both the OPE to any order and the spectrum of states. We start with the OPE for $Π(μ)$ and analyze the extraction of the square of the ground-state wave function, $R\propto|Ψ_0(\vec r=0)|^2$, from an SVZ sum rule, setting the mass of the ground state $E_0$ equal to its known value and treating the effective continuum threshold as a fit parameter. We show that in a limited ``fiducial'' range of the Borel parameter there exists a solution for the effective threshold which precisely reproduces the exact $Π(μ)$ for any value of $R$ within the range $0.7 \le R/R_0 \le 1.15$ ($R_0$ is the known exact value). Thus, the value of $R$ extracted from the sum rule is determined to a great extent by the contribution of the hadron continuum. Our main finding is that in the cases where the hadron continuum is not known and is modeled by an effective continuum threshold, the systematic uncertainties of the sum-rule procedure cannot be controlled.
description: Revtex 9 pages, typoes corrected, version to be published in Phys. Rev. D
Dwarf satellites of high-z Lyman Break Galaxies: a free lunch for JWST
Creators: name: Gelli, Viola
name: Salvadori, Stefania
name: Ferrara, Andrea
name: Pallottini, Andrea
name: Carniani, Stefano
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We show that the James Webb Space Telescope will be able to detect dwarf satellites of high-$z$ Lyman Break Galaxies (LBGs). To this aim, we use cosmological simulations following the evolution of a typical $M_\star\simeq10^{10}\rm M_\odot$ LBG up to $z\simeq6$, and analyse the observational properties of its five satellite dwarf galaxies ($10^7{\rm M_\odot}
description: 8 pages, 3 figures, accepted for publication in ApJL
Correlation of Gravitational Wave Background Noises and Statistical Loss for Angular Averaged Sensitivity Curves
Creators: name: Seto, Naoki
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Gravitational wave backgrounds generate correlated noises to separated detectors. This correlation can induce statistical losses to actual detector networks, compared with idealized noise-independent networks. Assuming that the backgrounds are isotropic, we examine the statistical losses specifically for the angular averaged sensitivity curves, and derive simple expressions that depend on the overlap reduction functions and the strength of the background noises relative to the instrumental noises. For future triangular interferometers such as ET and LISA, we also discuss preferred network geometries to suppress the potential statistical losses.
description: 11 pages, 10 figures
Emerging Technologies for Complex and Large-scale Problems in Multi-energy Systems
Creators: K. Baker
P. Panciatici
L. Roald
J. Rueda
Publisher: name: IEEE
Year: 2022

The transition of electrical power systems towards 100% clean and sustainable power supply, and the higher integration and interactions with other energy sectors (e.g. hydrogen gas, heating, transportation) demands innovative approaches for optimal assessment and decision making tasks, which are essential for cost-effective and reliable planning and operations across different time scales.
This challenge entails optimization problems with high computational complexity and a myriad of optimization variables. The experts invited to this panel will give overview the latest emerging methods for the formulation and computationally effective solution of different type of complex and large scale optimization problems of multi-energy systems. The panel will have interactive discussions with the audience on several key aspects, including data-driven optimization, real-time optimization, distributed optimization, and AI-supported optimization.
The transition of electrical power systems towards 100% clean and sustainable power supply, and the higher integration and interactions with other energy sectors (e.g. hydrogen gas, heating, transportation) demands innovative approaches for optimal assessment and decision making tasks, which are essential for cost-effective and reliable planning and operations across different time scales.
This challenge entails optimization problems with high computational complexity and a myriad of optimization variables. The experts invited to this panel will give overview the latest emerging methods for the formulation and computationally effective solution of different type of complex and large scale optimization problems of multi-energy systems. The panel will have interactive discussions with the audience on several key aspects, including data-driven optimization, real-time optimization, distributed optimization, and AI-supported optimization.
Additional file 1 of The effect of training and supervision on primary health care workers’ competence to deliver maternal depression inclusive health education in Ibadan, Nigeria: a quasi-experimental study
Creators: name: Adefolarin, Adeyinka Olufolake
name: Gershim, Asiki
name: Sola, Arulogun Oyedunni
name: Oye, Gureje
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1.
Advanced State Estimation for Energy System Integration: Modeling, Algorithms and Applications
Creators: R. Carmona-Pardo
Y. Lin
Publisher: name: IEEE
Year: 2022

The energy system integration (ESI) enhances the utilization of different energy forms and coordinates the energy generation, transmission, distribution and consumption to promote energy efficiency and reduce carbon emission. The optimal operation and control of ESI rely on the accurate models and complete states from state estimation. Although there have been studies on state estimation models and algorithms for heating and natural gas systems, state estimation for general IESs is still challenging because i) they are more complicated than the bulk power systems with multiple energy sectors and time scales, and ii) they are distributed systems with multiple system operators and multi-energy consumers. Existing theories and experiences are not directly applicable. This panel aims to address and disseminate state-of-the-art research regarding state estimation models, algorithms and applications for ESI.
The energy system integration (ESI) enhances the utilization of different energy forms and coordinates the energy generation, transmission, distribution and consumption to promote energy efficiency and reduce carbon emission. The optimal operation and control of ESI rely on the accurate models and complete states from state estimation. Although there have been studies on state estimation models and algorithms for heating and natural gas systems, state estimation for general IESs is still challenging because i) they are more complicated than the bulk power systems with multiple energy sectors and time scales, and ii) they are distributed systems with multiple system operators and multi-energy consumers. Existing theories and experiences are not directly applicable. This panel aims to address and disseminate state-of-the-art research regarding state estimation models, algorithms and applications for ESI.
Advanced Applications of Modern Optimization and Artificial Intelligence Methods on Active Distribution Networks
Creators: V. Miranda
P. Vergara
J. Gremer
R. Torquato
Publisher: name: IEEE
Year: 2022

As a result of the continuous digitalization pace of the energy sector, larger amounts of data streams are available now. From the distribution system operators (DSOs) perspective, the deployment of ICT infrastructure enables real-time monitoring and optimal management of assets, while the increasing introduction of Internet of Things (IoT)-based devices enable users to characterize and adapt their energy consumption behavior. At the same time, the increasing number of distributed energy resources (DERs) on distribution networks is demanding DSOs and users a better level of coordination, aiming at continuously guaranteeing reliable and cost-effective operations. In this context, innovative approaches based on emerging optimization methods and Artificial Intelligence (AI) that aggregate, model, forecast and operate DERs operating in active distribution networks are being introduced.  In this panel, we gather academics and industry experts to discuss initiatives concerning with the application of modern optimization and AI methods in active distribution networks. Thinking in the future adoption of such optimization-AI-based approaches, technical challenges, such as convergence guarantee, data efficiency, computational efficiency, robustness, explainability, as well as new arising concerns related to trust, safety, privacy, fairness, etc., will be discussed.
As a result of the continuous digitalization pace of the energy sector, larger amounts of data streams are available now. From the distribution system operators (DSOs) perspective, the deployment of ICT infrastructure enables real-time monitoring and optimal management of assets, while the increasing introduction of Internet of Things (IoT)-based devices enable users to characterize and adapt their energy consumption behavior. At the same time, the increasing number of distributed energy resources (DERs) on distribution networks is demanding DSOs and users a better level of coordination, aiming at continuously guaranteeing reliable and cost-effective operations. In this context, innovative approaches based on emerging optimization methods and Artificial Intelligence (AI) that aggregate, model, forecast and operate DERs operating in active distribution networks are being introduced.  In this panel, we gather academics and industry experts to discuss initiatives concerning with the application of modern optimization and AI methods in active distribution networks. Thinking in the future adoption of such optimization-AI-based approaches, technical challenges, such as convergence guarantee, data efficiency, computational efficiency, robustness, explainability, as well as new arising concerns related to trust, safety, privacy, fairness, etc., will be discussed.