cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ground-State Properties of a One-Dimensional System of Hard Rods
Creators: name: Mazzanti, F.
name: Astrakharchik, G. E.
name: Boronat, J.
name: Casulleras, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: A quantum Monte Carlo simulation of a system of hard rods in one dimension is presented and discussed. The calculation is exact since the analytical form of the wavefunction is known, and is in excellent agreement with predictions obtained from asymptotic expansions valid at large distances. The analysis of the static structure factor and the pair distribution function indicates that a solid-like and a gas-like phases exist at high and low densities, respectively. The one-body density matrix decays following a power-law at large distances and produces a divergence in the low density momentum distribution at k=0 which can be identified as a quasi-condensate.
description: 4 pages, 4 figures
title: Experimental investigations of viscoelastic and ferroelectric heating in PZT–5H
Creators: name: Warkentin, Andreas
name: Ricoeur, Andreas
Publisher: name: Universität Kassel
Year: 2021
Subjects: subject: 620
subject: 530
subject: Ferroelektrikum
subject: Viskoelastizität
subject: Heizung
subject: Temperaturschwankung
subject: Frequenz
subject: Amplitude

description: Gefördert im Rahmen des Projekts DEAL
Slides for: Smart Power Converters for Steady State Voltage Support
Creators: Rampelli Manojkumar
Publisher: name: IEEE
Year: 2023

Slides for: Smart Power Converters for Steady State Voltage Support
This webinar presents the applications of smart power converters for energy management in low voltage distributions systems with case studies and results. The learning objectives are i) Understanding the applications of modes of operation of smart power converters i.e., grid following mode and grid forming mode. ii) Knowing the impact of smart power converters on voltage profile improvement during steady state operation of low voltage distributions systems. In grid forming mode, the converters are able to maintain the terminal voltage magnitude and frequency as per the given references.  In grid following mode, the converters are able to maintain the active/reactive power references as per the given references. The power converters with this ability of operating in grid forming and grid following modes are considered as smart power converters. These smart power converters are helpful for implementing energy management applications like voltage profile improvement, peak shaving, minimizing energy demand, etc in power distribution systems.
Learning in Feedforward Neural Networks Accelerated by Transfer Entropy
Creators: name: Moldovan, Adrian
name: Caţaron, Angel
name: Andonie, Răzvan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Current neural networks architectures are many times harder to train because of the increasing size and complexity of the used datasets. Our objective is to design more efficient training algorithms utilizing causal relationships inferred from neural networks. The transfer entropy (TE) was initially introduced as an information transfer measure used to quantify the statistical coherence between events (time series). Later, it was related to causality, even if they are not the same. There are only few papers reporting applications of causality or TE in neural networks. Our contribution is an information-theoretical method for analyzing information transfer between the nodes of feedforward neural networks. The information transfer is measured by the TE of feedback neural connections. Intuitively, TE measures the relevance of a connection in the network and the feedback amplifies this connection. We introduce a backpropagation type training algorithm that uses TE feedback connections to improve its performance.
description: 18 pages, 13 figures
title: Occupancy modelling : study design and models for data collected along transects
Creators: name: Guillera-Arroita, Gurutzeta
Publisher: name: University of Kent
Year: 2021

description: Occupancy, defined as the proportion of sites occupied by a species, is a state variable of interest in ecology and conservation. When modelling species occupancy it is crucial to account for the detection process, as most species can remain undetected at sites where present. This is usually achieved by carrying out separate repeat visits to each sampling site but other methods are sometimes used, such as surveying spatial sub-units within each sampling site, or even collecting detection data continuously along a transect, during a single visit. This thesis deals with two aspects of occupancy modelling: (i) we explore issues related to the design of occupancy studies, including the trade-off in survey effort allocation between sites and repeat visits, sample size determination and the impact of sampling with replacement in studies based on spatial replication; and (ii) we develop and evaluate new models to estimate occupancy from species detection data collected along transects, motivated by the analysis of a data set from a Surnatran tiger Panthera tigris sumatrae survey which followed this type of sampling protocol. The models we propose, which describe the detection process as a continuous point process, can account for clustering and/or abundance-induced heterogeneity in the detection process and represent a step forward with respect to current modelling approaches which involve data discretisation and two-stage ad hoc procedures.
Slides for: Decentralized Learning Over Multitask Graphs
Creators: Dr. Roula Nassif
Publisher: name: IEEE
Year: 2023

Slides for: SPS Webinar, 3 February 2023, Dr. Roula Nassif
Mobile phones, wearable devices, autonomous vehicles, smart homes, and hospitals are examples of modern distributed networks generating massive amounts of data each day. Due to the growing computational power in these devices and the increasing size of the datasets, coupled with concerns over sharing private data, federated and decentralized training of statistical models have become desirable and often necessary. In these approaches, each participating device (which is referred to as agent or node) has a local training dataset which is never uploaded to the server. Training data is kept locally on users� devices, and the devices are used as agents performing computation on their local data to update global models of interest. Today, many industries and major companies (such as Google, Apple, etc.) are beginning to incorporate such technologies into their own products.

In applications where communication to a server becomes a bottleneck, decentralized topologies (where agents only communicate with their neighboring devices) are potential alternatives to federated topologies (where a central server connects with all remote devices). This talk falls into the broad theme of decentralized learning over graphs. By recognizing the increasing ability of many emerging technologies to collect data in a distributed and streamed manner, the talk focus will be on presenting decentralized approaches where devices are collecting data in a continuous manner and where the underlying data-generation models can change over time. Moreover, by recognizing that modern machine learning and signal processing applications (where tremendous volumes of training data are generated continuously by a massive number of heterogeneous devices) have several key properties that differentiate them from standard distributed inference applications, the talk focus will be on presenting decentralized multitask approaches for learning in statistical heterogeneous settings. Multitask learning is an approach to inductive transfer learning (using what is learned for one problem to assist in another problem). It helps improving the network performance relative to learning each task separately by using the domain information contained in the training signals of related tasks as an inductive bias. The working hypothesis for decentralized multitask learning is that agents are allowed to cooperate with each other to learn distinct, though related tasks. In this talk, special emphasis will be placed on illustrating the benefit of cooperation by showing (i) how it steers the network limiting point, (ii) how different cooperation rules allow to promote different task relatedness models, and (iii) how and when cooperation over multitask networks outperforms non-cooperative strategies.
Power & Energy Magazine -Volumen 21: Número 1 - Enero/Febrero de 2023: Visibilidad de red mejorada
Creators: Bei Gou
Tianshu B
Shaobu Wang
Innocent Kamwa
Sakis Meliopoulos
José A. Rosendo-Macías
Publisher: name: IEEE
Year: 2023

Desarrollos de estimación de parámetros y estados dinámicos
Desarrollos de estimación de parámetros y estados dinámicos
Soft-pulse dynamical decoupling in a cavity
Creators: name: Pryadko, Leonid P.
name: Quiroz, Gregory
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Dynamical decoupling is a coherent control technique where the intrinsic and extrinsic couplings of a quantum system are effectively averaged out by application of specially designed driving fields (refocusing pulse sequences). This entails pumping energy into the system, which can be especially dangerous when it has sharp spectral features like a cavity mode close to resonance. In this work we show that such an effect can be avoided with properly constructed refocusing sequences. To this end we construct the average Hamiltonian expansion for the system evolution operator associated with a single ``soft'' pi-pulse. To second order in the pulse duration, we characterize a symmetric pulse shape by three parameters, two of which can be turned to zero by shaping. We express the effective Hamiltonians for several pulse sequences in terms of these parameters, and use the results to analyze the structure of error operators for controlled Jaynes-Cummings Hamiltonian. When errors are cancelled to second order, numerical simulations show excellent qubit fidelity with strongly-suppressed oscillator heating.
description: 9pages, 5eps figures
A coupled discontinuous Galerkin-Finite Volume framework for solving gas dynamics over embedded geometries
Creators: name: Gulizzi, Vincenzo
name: Almgren, Ann S.
name: Bell, John B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We present a computational framework for solving the equations of inviscid gas dynamics using structured grids with embedded geometries. The novelty of the proposed approach is the use of high-order discontinuous Galerkin (dG) schemes and a shock-capturing Finite Volume (FV) scheme coupled via an $hp$ adaptive mesh refinement ($hp$-AMR) strategy that offers high-order accurate resolution of the embedded geometries. The $hp$-AMR strategy is based on a multi-level block-structured domain partition in which each level is represented by block-structured Cartesian grids and the embedded geometry is represented implicitly by a level set function. The intersection of the embedded geometry with the grids produces the implicitly-defined mesh that consists of a collection of regular rectangular cells plus a relatively small number of irregular curved elements in the vicinity of the embedded boundaries. High-order quadrature rules for implicitly-defined domains enable high-order accuracy resolution of the curved elements with a cell-merging strategy to address the small-cell problem. The $hp$-AMR algorithm treats the system with a second-order finite volume scheme at the finest level to dynamically track the evolution of solution discontinuities while using dG schemes at coarser levels to provide high-order accuracy in smooth regions of the flow. On the dG levels, the methodology supports different orders of basis functions on different levels. The space-discretized governing equations are then advanced explicitly in time using high-order Runge-Kutta algorithms. Numerical tests are presented for two-dimensional and three-dimensional problems involving an ideal gas. The results are compared with both analytical solutions and experimental observations and demonstrate that the framework provides high-order accuracy for smooth flows and accurately captures solution discontinuities.
Continuously Managing NFRs: Opportunities and Challenges in Practice
Creators: name: Werner, Colin
name: Li, Ze Shi
name: Lowlind, Derek
name: Elazhary, Omar
name: Ernst, Neil
name: Damian, Daniela
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Non-functional requirements (NFR), which include performance, availability, and maintainability, are vitally important to overall software quality. However, research has shown NFRs are, in practice, poorly defined and difficult to verify. Continuous software engineering practices, which extend agile practices, emphasize fast paced, automated, and rapid release of software that poses additional challenges to handling NFRs. In this multi-case study we empirically investigated how three organizations, for which NFRs are paramount to their business survival, manage NFRs in their continuous practices. We describe four practices these companies use to manage NFRs, such as offloading NFRs to cloud providers or the use of metrics and continuous monitoring, both of which enable almost real-time feedback on managing the NFRs. However, managing NFRs comes at a cost as we also identified a number of challenges these organizations face while managing NFRs in their continuous software engineering practices. For example, the organizations in our study were able to realize an NFR by strategically and heavily investing in configuration management and infrastructure as code, in order to offload the responsibility of NFRs; however, this offloading implied potential loss of control. Our discussion and key research implications show the opportunities, trade-offs, and importance of the unique give-and-take relationship between continuous software engineering and NFRs. Research artifacts may be found at https://doi.org/10.5281/zenodo.3376342.
Frustration-driven QPT in the 1D extended anisotropic Heisenberg model
Creators: name: Plekhanov, E.
name: Avella, A.
name: Mancini, F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: By using Density Matrix Renormalization Group (DMRG) technique we study the 1D extended anisotropic Heisenberg model. We find that starting from the ferromagnetic phase, the system undergoes two quantum phase transitions (QPTs) induced by frustration. By increasing the next-nearest-neighbor (NNN) interaction, the ground state of the system changes smoothly from a completely polarized state to a NNN correlated one. On the contrary, letting the in-plane interaction to be greater than the out-of-plane one, the ground state changes abruptly.
description: 4 pages, 4 figures, to be presented at CSMAG-07 Kosice, Slovakia, July 2007
The Simons Observatory: the Large Aperture Telescope (LAT)
Creators: name: Xu, Zhilei
name: Adachi, Shunsuke
name: Ade, Peter
name: Beall, J. A.
name: Bhandarkar, Tanay
name: Bond, J. Richard
name: Chesmore, Grace E.
name: Chinone, Yuji
name: Choi, Steve K.
name: Connors, Jake A.
name: Coppi, Gabriele
name: Cothard, Nicholas F.
name: Crowley, Kevin D.
name: Devlin, Mark
name: Dicker, Simon
name: Dober, Bradley
name: Duff, Shannon M.
name: Galitzki, Nicholas
name: Gallardo, Patricio A.
name: Golec, Joseph E.
name: Gudmundsson, Jon E.
name: Haridas, Saianeesh K.
name: Harrington, Kathleen
name: Hervias-Caimapo, Carlos
name: Ho, Shuay-Pwu Patty
name: Huber, Zachary B.
name: Hubmayr, Johannes
name: Iuliano, Jeffrey
name: Kaneko, Daisuke
name: Kofman, Anna M.
name: Koopman, Brian J.
name: Lashner, Jack
name: Limon, Michele
name: Link, Michael J.
name: Lucas, Tammy J.
name: Matsuda, Frederick
name: McCarrick, Heather
name: Nati, Federico
name: Niemack, Michael D.
name: Orlowski-Scherer, John
name: Piccirillo, Lucio
name: Sarmiento, Karen Perez
name: Schaan, Emmanuel
name: Silva-Feaver, Maximiliano
name: Sonka, Rita
name: Sutariya, Shreya
name: Tajima, Osamu
name: Teply, Grant P.
name: Terasaki, Tomoki
name: Thornton, Robert
name: Tucker, Carole
name: Ullom, Joel
name: Vavagiakis, Eve M.
name: Vissers, Michael R.
name: Walker, Samantha
name: Whipps, Zachary
name: Wollack, Edward J.
name: Zannoni, Mario
name: Zhu, Ningfeng
name: Zonca, Andrea
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The Simons Observatory (SO) is a Cosmic Microwave Background (CMB) experiment to observe the microwave sky in six frequency bands from 30GHz to 290GHz. The Observatory -- at $\sim$5200m altitude -- comprises three Small Aperture Telescopes (SATs) and one Large Aperture Telescope (LAT) at the Atacama Desert, Chile. This research note describes the design and current status of the LAT along with its future timeline.
description: 4 pages, 1 figure
Shell model study of the pairing correlations
Creators: name: Sheikh, J. A.
name: Ganai, P. A.
name: Singh, R. P.
name: Bhowmick, R. K.
name: Frauendorf, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A systematic study of the pairing correlations as a function of temperature and angular momentum has been performed in the sd-shell region using the spherical shell model approach. The pairing correlations have been derived for even-even, even-odd and odd-odd systems near N=Z and also for the asymmetric case of N=Z+4. The results indicate that the pairing content and the behavior of pair correlations is similar in even-even and odd-mass nuclei. For odd-odd N=Z system, angular momentum I=0 state is an isospin, t=1 neutron-proton paired configuration. Further, these t=1 correlations are shown to be dramatically reduced for the asymmetric case of N=Z+4. The shell model results obtained are qualitatively explained within a simplified degenerate model.
Tables S2 and S3: Early Pliocene marine transgression into the lower Colorado River valley, southwestern USA, by re-flooding of a former tidal strait
Creators: name: Dorsey, Rebecca J.
name: Braga, Juan Carlos
name: Gardner, Kevin
name: McDougall, Kristin
name: O'Connell, Brennan
Publisher: name: Geological Society of London
Year: 2021
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Microfossil sample data (S2), distribution of foraminifers in the PMV3 and PMV4 sections (S3) and taxonomic notes
Detecting an Itinerant Optical Photon Twice without Destroying It
Creators: name: Distante, Emanuele
name: Daiss, Severin
name: Langenfeld, Stefan
name: Hartung, Lukas
name: Thomas, Philip
name: Morin, Olivier
name: Rempe, Gerhard
name: Welte, Stephan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Nondestructive quantum measurements are central for quantum physics applications ranging from quantum sensing to quantum computing and quantum communication. Employing the toolbox of cavity quantum electrodynamics, we here concatenate two identical nondestructive photon detectors to repeatedly detect and track a single photon propagating through a $60\,\mathrm{m}$ long optical fiber. By demonstrating that the combined signal-to-noise ratio of the two detectors surpasses each single one by about two orders of magnitude, we experimentally verify a key practical benefit of cascaded non-demolition detectors compared to conventional absorbing devices.
description: 8 pages, 6 figures
March - The Past, Present & Future of Hydrogen in Electrical Grids - Part 2
Creators: Lasantha Meegahapola
Ashtabhuj Kumar Srivastava
Bhavesh R. Bhalja
Kumari Sandhya
Akula Sathvick
Kaylan Chatterjee
Ahad Esmaeilian
Kaveh Aflaki
Publisher: name: IEEE
Year: 2023

Bulletin
This is the second issue of the Smart Grid Bulletin titled "The Past, Present & Future of Hydrogen in Electrical Grids" featuring "Grid Integration of Hydrogen Electrolyzers and Fuel - Cells: Opportunities, Challenges and Future Directions", "Smart Hydrogen Applications in Transportation/Power Sectors", "Hydrogen: An Energy Vector Towards Sustainable Resilience" and, "Green Hydrogen: The Swiss Army Knife of Energy Transition".
Van der Waals interactions in DFT made easy by Wannier functions
Creators: name: Silvestrelli, Pier Luigi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ubiquitous Van der Waals interactions between atoms and molecules are important for many molecular and solid structures. These systems are often studied from first principles using the Density Functional Theory (DFT). However, the commonly used DFT functionals fail to capture the essence of Van der Waals effects. Many attempts to correct for this problem have been proposed, which are not completely satisfactory because they are either very complex and computationally expensive or have a basic semiempirical character. We here describe a novel approach, based on the use of the Maximally-Localized Wannier functions, that appears to be promising, being simple, efficient, accurate, and transferable (charge polarization effects are naturally included). The results of test applications are presented.
description: submitted to Phys. Rev. Lett
The neutrino emission from thermal processes in very massive stars in the local universe
Creators: name: Yusof, N.
name: Kassim, H. A.
name: Garba, L. G.
name: Ahmad, N. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a new overview of the life of very massive stars (VMS) in terms of neutrino emission from thermal processes: pair annihilation, plasmon decay, photoneutrino process, bremsstrahlung and recombination processes in burning stages of selected VMS models. We use the realistic conditions of temperature, density, electron fraction and nuclear isotropic composition of the VMS. Results are presented for a set of progenitor stars with mass of 150, 200 and 300 M$_\odot$ Z=0.002 and 500 M$_\odot$ Z=0.006 rotating models which are expected to explode as a pair instability supernova at the end of their life except the 300 M$_\odot$ would end up as a black hole. It is found that for VMS, thermal neutrino emission occurs as early as towards the end of hydrogen burning stage due to the high initial temperature and density of these VMS. We calculate the total neutrino emissivity, $Q_ν$ and luminosity, $L_ν$ using the structure profile of each burning stages of the models and observed the contribution of photoneutrino at early burning stages (H and He) and pair annihilation at the advanced stages. Pair annihilation and photoneutrino processes are the most dominant neutrino energy loss mechanisms throughout the evolutionary track of the VMS. At the O-burning stage, the neutrino luminosity $\sim 10^{47-48}$ erg/s depending on their initial mass and metallicity are slightly higher than the neutrino luminosity from massive stars. This could shed light on the possibility of using detection of neutrinos to locate the candidates for pair instability supernova in our local universe.
description: 12 pages, submitted to MNRAS
Exploring CP Violation and Penguin Effects through $B^0_d \to D^+ D^-$ and $B^0_s \to D^+_s D^-_s$
Creators: name: Fleischer, Robert
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The decay $B^0_d \to D^+ D^-$ offers an interesting probe of CP violation, but requires control of penguin effects, which can be done through $B^0_s \to D^+_s D^-_s$ by means of the $U$-spin flavour symmetry of strong interactions. Recently, the Belle collaboration reported indications of large CP violation in the $B^0_d$ decay, which were, however, not confirmed by BaBar, and first signals of the $B^0_s$ channel were observed at the Tevatron. In view of these developments and the quickly approaching start of the LHC, we explore the allowed region in observable space for CP violation in $B^0_d \to D^+ D^-$, perform theoretical estimates of the relevant hadronic penguin parameters and observables, and address questions both about the most promising strategies for the extraction of CP-violating phases and about the interplay with other measurements of CP violation and the search for new physics. As far as the latter aspect is concerned, we point out that the $B^0_{q} \to D_{q}^+ D^-_{q}$ system provides a setting for the determination of the $B^0_q$-$\bar B^0_q$ mixing phases ($q\in\{d,s\}$) that is complementary to the conventional $B^0_d\to J/ψK_S$ and $B^0_s\to J/ψϕ$ modes with respect to possible new-physics effects in the electroweak penguin sector.
description: 18 pages, 6 figures
Evidence for nonlinear diffusive shock acceleration of cosmic-rays in the 2006 outburst of the recurrent nova RS Ophiuchi
Creators: name: Tatischeff, V.
name: Hernanz, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Spectroscopic observations of the 2006 outburst of the recurrent nova RS Ophiuchi at both infrared (IR) and X-ray wavelengths have shown that the blast wave has decelerated at a higher rate than predicted by the standard test-particle adiabatic shock-wave model. Here we show that the observed evolution of the nova remnant can be explained by the diffusive shock acceleration of particles at the blast wave and the subsequent escape of the highest energy ions from the shock region. Nonlinear particle acceleration can also account for the difference of shock velocities deduced from the IR and X-ray data. The maximum energy that accelerated electrons and protons can have achieved in few days after outburst is found to be as high as a few TeV. Using the semi-analytic model of nonlinear diffusive shock acceleration developed by Berezhko & Ellison, we show that the postshock temperature of the shocked gas measured with RXTE/PCA and Swift/XRT imply a relatively moderate acceleration efficiency.
description: Accepted for publication in ApJL
Advances to Grid-Forming Technology for Blackstart, Restoration, and Fault Ride-Through Capability of IBR (Slides)
Creators: Hugo Nestor Villegas Pico
Publisher: name: IEEE
Year: 2023

Short description - Thumbnail view descripiton

To achieve ultra-high penetrations of converter-based resources, wind and photovoltaic power plants will be required to blackstart bulk power systems and withstand severe restoration transients. If these resources are not able to restore a power system, their incorporation into electric grids could be limited by blackstart capability.

To tackle this grand challenge, this talk introduces established advances to grid-forming technology for Type 3 and 4 wind turbines as well as photovoltaic power plants. These advances have been achieved by engineering two-axis anti-windup proportional-integral regulators that can bound abstract control signals within a circle. The features of this class of regulators are: they are elegant as well as relatively simple to implement and understand. More importantly, they can enable converter-based resources to:

 (i) successfully re-energize transmission lines and cold start motor loads;

(ii) sustain the energization of unbalanced loads and nonlinear loads;

(iii) reliably ride through symmetrical and asymmetrical faults;

(iv) maintain synchronism among converter-based resources within power plants during small and large transients; and

(v) survive low-wind-speed and low-solar-irradiance scenarios to prevent a second blackout.

These advances will be demonstrated using simulations in the electromagnetic-transient and positive-sequence domains.

Who would benefit from this webinar:

Reliability organizations, e.g., NERC, U.S. federal agencies, e.g., FERC, DOE, NSF, Faculty and students (of power and control) worldwide, Manufacturers of wind and solar assets, Power industry engineers, Simulation and control businesses.
Slides for: CryoGAN: A New Reconstruction Paradigm for Single-Particle Cryo-EM via Deep Adversarial Learning
Creators: Dr. Harshit Gupta
Publisher: name: IEEE
Year: 2023

Slides for: SPS Webinar, 13 February 2023, Dr. Harshit Gupta
Cryo-electron microscopy (Cryo-EM) has revolutionized structural biology over the last decade by delivering 3D structures of biomolecules at near-atomic resolution. It produces thousands of noisy projections from separate instances of the same but randomly oriented biomolecule. These noisy projections are then used to reconstruct the 3D structure of the biomolecule. However, the current reconstruction pipelines are computationally expensive since they rely on maximum likelihood techniques which need to estimate pose or conformation for each projection.

CryoGAN is a new paradigm for single-particle cryo-EM reconstruction based on unsupervised deep adversarial learning.  CryoGAN sidesteps the pose-estimation problem by using a generative adversarial network (GAN) to learn the 3D structure whose simulated projections most closely match the acquired projections in a distributional sense. The architecture of CryoGAN resembles that of standard GAN, with the twist that the generator network is replaced by a model of the cryo-EM image acquisition process. CryoGAN is an unsupervised algorithm that only demands projection images. No initial volume estimate or prior training is needed. CryoGAN requires minimal user interaction and can provide reconstructions in a matter of hours on a high-end GPU. In addition, it is backed by mathematical guarantees on the recovery of the correct structure. Moreover, its extension, called MultiCryoGAN can reconstruct continuous conformations of dynamic biomolecules, thus helping solve the most important open problem in the field without pose or conformation estimation.
Magnetic fluctuations in n-type high-$T_c$ superconductors reveal breakdown of fermiology
Creators: name: Krüger, F.
name: Wilson, S. D.
name: Shan, L.
name: Li, S.
name: Huang, Y.
name: Wen, H. - H.
name: Zhang, S. -C.
name: Dai, Pengcheng
name: Zaanen, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: By combining experimental measurements of the quasiparticle and dynamical magnetic properties of optimally electron-doped Pr$_{0.88}$LaCe$_{0.12}$CuO$_4$ with theoretical calculations we demonstrate that the conventional fermiology approach cannot possibly account for the magnetic fluctuations in these materials. In particular, we perform tunneling experiments on the very same sample for which a dynamical magnetic resonance has been reported recently and use photoemission data by others on a similar sample to characterize the fermionic quasiparticle excitations in great detail. We subsequently use this information to calculate the magnetic response within the conventional fermiology framework as applied in a large body of work for the hole-doped superconductors to find a profound disagreement between the theoretical expectations and the measurements: this approach predicts a step-like feature rather than a sharp resonance peak, it underestimates the intensity of the resonance by an order of magnitude, it suggests an unreasonable temperature dependence of the resonance, and most severely, it predicts that most of the spectral weight resides in incommensurate wings which are a key feature of the hole-doped cuprates but have never been observed in the electron-doped counterparts. Our findings strongly suggest that the magnetic fluctuations reflect the quantum-mechanical competition between antiferromagnetic and superconducting orders.
description: 10 pages, 9 figures, 1 table
Three-dimensional multimodal medical imaging system based on free-hand ultrasound and structured light
Creators: name: Meza, Jhacson
name: Contreras-Ortiz, Sonia H.
name: Romero, Lenny A.
name: Marrugo, Andres G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We propose a three-dimensional (3D) multimodal medical imaging system that combines freehand ultrasound and structured light 3D reconstruction in a single coordinate system without requiring registration. To the best of our knowledge, these techniques have not been combined before as a multimodal imaging technique. The system complements the internal 3D information acquired with ultrasound, with the external surface measured with the structure light technique. Moreover, the ultrasound probe's optical tracking for pose estimation was implemented based on a convolutional neural network. Experimental results show the system's high accuracy and reproducibility, as well as its potential for preoperative and intraoperative applications. The experimental multimodal error, or the distance from two surfaces obtained with different modalities, was 0.12 mm. The code is available as a Github repository.
March : Emerging Technology in the Development of Smart Cities in India
Creators: Sidharth Sabyasachi
B V Surya Vardhan
Mohan Khedkar
Ishan Srivastava
Abhishek Kumar
Sudhansu Sekhar Das
Irfan Ahmed
Publisher: name: IEEE
Year: 2023

Newsletter
This issue of Smart Cities eNewsletter contains "FOREWORD: Case Study - Emerging Technology in the Development of Smart Cities in India", "The Role of Artificial Intelligence and Block Chain in Advanced Power Systems for Smart Cities", "The Role of Advanced Meter Infrastructure (AMI) for Electricity Theft Detection in Smart City", "Smart City Mission of India: Initiations and Schemes by Government of India", "Transition of Indian Cities to Smart Cities", and "Smart Grid: A Step Towards Smart City".
Normal approximation for nonlinear statistics using a concentration inequality approach
Creators: name: Chen, Louis H. Y.
name: Shao, Qi-Man
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: Let $T$ be a general sampling statistic that can be written as a linear statistic plus an error term. Uniform and non-uniform Berry--Esseen type bounds for $T$ are obtained. The bounds are the best possible for many known statistics. Applications to U-statistics, multisample U-statistics, L-statistics, random sums and functions of nonlinear statistics are discussed.
description: Published at http://dx.doi.org/10.3150/07-BEJ5164 in the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
Decision table for classifying point sources based on FIRST and 2MASS databases
Creators: name: Zhang, Y.
name: Zhao, Y.
name: Gao, D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: With the availability of multiwavelength, multiscale and multiepoch astronomical catalogues, the number of features to describe astronomical objects has increases. The better features we select to classify objects, the higher the classification accuracy is. In this paper, we have used data sets of stars and quasars from near infrared band and radio band. Then best-first search method was applied to select features. For the data with selected features, the algorithm of decision table was implemented. The classification accuracy is more than 95.9%. As a result, the feature selection method improves the effectiveness and efficiency of the classification method. Moreover the result shows that decision table is robust and effective for discrimination of celestial objects and used for preselecting quasar candidates for large survey projects.
description: 10 pages. accepted by Advances in Space Research
Reimagining the Ministries' Quarter of Downtown Cairo : "Bridging the Future through the Past"
Creators: name: Assaker, Dalia
Publisher: name: RWTH Aachen University
Year: 2020
Subjects: subject: 720
subject: administrative centers in Cairo
subject: development history
subject: urban design
subject: adaptive reuse of buildings
subject: architecture

description: Masterarbeit, Rheinisch-Westfälische Technische Hochschule Aachen, 2020; Aachen 93 Seiten (2020). = Masterarbeit, Rheinisch-Westfälische Technische Hochschule Aachen, 2020
description: Published by Aachen
Comparison of decision tree methods for finding active objects
Creators: name: Zhao, Y.
name: Zhang, Y.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The automated classification of objects from large catalogues or survey projects is an important task in many astronomical surveys. Faced with various classification algorithms, astronomers should select the method according to their requirements. Here we describe several kinds of decision trees for finding active objects by multi-wavelength data, such as REPTree, Random Tree, Decision Stump, Random Forest, J48, NBTree, AdTree. All decision tree approaches investigated are in the WEKA package. The classification performance of the methods is presented. In the process of classification by decision tree methods, the classification rules are easily obtained, moreover these rules are clear and easy to understand for astronomers. As a result, astronomers are inclined to prefer and apply them, thus know which attributes are important to discriminate celestial objects. The experimental results show that when various decision trees are applied in discriminating active objects (quasars, BL Lac objects and active galaxies) from non-active objects (stars and galaxies), ADTree is the best only in terms of accuracy, Decision Stump is the best only considering speed, J48 is the optimal choice considering both accuracy and speed.
description: 10 pages. accepted by Advances in Space Research
Dynamics of Logamediate Inflation
Creators: name: Barrow, John D.
name: Nunes, N. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A computation of the inflationary observables n_{s} and r is made for `logamediate' inflation where the cosmological scale factor expands as $a=\exp (A(\ln t)^λ)$, and is compared to their predicted values in the intermediate inflationary theory, where $a=\exp (Bt^{f})$. Both versions prove to be consistent with observational measurements of the cosmic background radiation. It is shown that the dynamics of a single inflaton field can be mimicked by a system of several fields in an analogous manner to that created by the joint evolution of the fields in assisted power-law inflation.
description: 7 pages, 5 figures. Extended introduction
title: Managing jurisdictions at Canterbury Cathedral Priory in the High Middle Ages 1285-1331
Creators: name: Moon, John Oxley
Publisher: name: University of Kent
Year: 2021

description: This thesis examines the management of the spiritual jurisdiction of Canterbury Cathedral Priory [Christ Church] by Prior Henry ofEastry during his forty-six year priorate from 1285- 133 1. A significant quantity of extant documents remains from this period including registers, charters, papal letters and royal writs, which owe much to the foresight of Prior Easay's reorganisation. These extant documents also contain letters, which relate to Christ Church possessions in France. This combination of English and French documents provides a rare opportunity to analyse how Christ Church managed its jurisdiction at both a national and intemational level. This thesis asks two fimdamental questions: what was the scope of the spiritual jurisdiction at Christ Church and how did Prior Eastry's policies contribute to the extension of this jurisdiction from a national to an international level. The extant sources show Prior Eastry's awareness of the political siruation in late thirteenth century England and the actions he took to preserve the authority and uniqueness of Canterbury. Ensuring that no precedents were established over Christ Church was not only a policy of Prior Eastry and Canterbury Cathedral Priory in the late thirteenth and early fourteenth century but had consumed the attentions of priors from the time of Archbishop Lanfranc. Canterbury Cathedral Priory's uniqueness not only derived from its rights to elect the archbishop of Canterbury and the primacy of the local ordinary over York but also from the Cult of St. Thomas that pervaded the whole of the Latin Church. This thesis will show how this unique combination of factors was used by Prior Eastry to appropriate the meaning of 'the Church of Canterbury' and extend Christ Church's jurisdiction to an intemational level.
Incoherent control of optical signals; quantum heat engine approach
Creators: name: Qutubuddin, Md
name: Dorfman, Konstantin E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Optical pump-probe signals can be viewed as work done by the matter while transferring the energy between two coherent baths (from pump to probe). In thermodynamics a heat engine, such as laser, is a device which performs similar work but operating between two thermal baths. We propose an "incoherent" control procedure for the optical signals using the physics of quantum heat engine. By combining a coherent laser excitation of electronic excited state of molecule with thermal relaxation we introduce an effective thermal bath treating stimulated emission of probe photons as work performed by the heat engine. We optimize power and efficiency for the pump-probe signal using control parameters of the pump laser utilizing four level molecular model in strong and weak coupling regime illustrating its equivalence with the thermodynamic cycle of the heat engine.
description: 11 pages, 3 Postscript figures, 1 table
Simulation of Demographic Change in Palestinian Territories
Creators: name: Sumour, M. A.
name: El-Astal, A. H.
name: Shabat, M. M.
name: Radwan, M. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: Mortality, birth rates and retirement play a major role in demographic changes. In most cases, mortality rates decreased in the past century without noticeable decrease in fertility rates, this leads to a significant increase in population growth. In many poor countries like Palestinian territories the number of births has fallen and the life expectancy increased. In this article we concentrate on measuring, analyzing and extrapolating the age structure in Palestine a few decades ago into future. A Fortran program has been designed and used for the simulation and analysis of our statistical data. This study of demographic change in Palestine has shown that Palestinians will have in future problems as the strongest age cohorts are the above-60-year olds. We therefore recommend the increase of both the retirement age and women employment.
description: For Int. J. Mod. Phys. C 18, issue 11; 9 pages including figures and program
Supplementary Information for “The effect of external flow on the feeding currents of sessile microorganisms”
Creators: name: Pepper, Rachel E.
name: Riley, Emily E.
name: Baron, Matthieu
name: Hurot, Thomas
name: Nielsen, Lasse Tor
name: M.A.R. Koehl
name: Kiørboe, Thomas
name: Andersen, Anders
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Biophysics
subject: 110601 Biomechanics
subject: FOS: Health sciences

description: Additional text and figures.
title: Development, Implementation, and Tracking of Preventative Safety Metrics
Creators: name: Al-Shabbani, Zamaan
name: Ammar, Ashtarout
name: Nassereddine, Hala
name: Dadi, Gabriel B.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2021
Subjects: subject: FOS: Civil engineering

description: What gets measured, gets improved. With respect to the safety and health of Kentucky Transportation Cabinet (KYTC) employees, the primary metric used has been the OSHA recordable incident rate. This incident rate measures how often a Cabinet employee sustains an injury that demands more than basic first aid. This metric is important for understanding injury frequencies, but it does not assist with management of the safety, health, and overall well-being of KYTC personnel. Based on a review of leading safety indicators adopted by various industries, this study devised a comprehensive list of safety metrics the Cabinet will benefit from tracking. Metrics were evaluated, organized, weighted, and compiled into a three-tier scorecard that is used to assess performance at KYTC’s district, area, and executive levels. Five major dimensions of an effective safety program were identified: (1) management leadership and commitment, (2) employee engagement, (3) training and competence, (4) hazard identification and control, and (5) evaluation and improvement. Surveys of KYTC districts found that all metrics performed robustly, while stakeholders at executive levels usually assigned lower scores to the five dimensions. Employee engagement had the lowest score. The Cabinet will benefit from seeking out more opportunities to involve employees in the agency’s safety program. Equally, the study reiterates the value of gaining management buy-in, support, and leadership when working to eliminate incidents and injuries.
description: © 2021 University of Kentucky, Kentucky Transportation Center
Report number: KTC-21-04/SPR19-568-1F
Supplementary material for "Exploring Chemical Reaction Space With Reaction Difference Fingerprints and Parametric t-SNE"
Creators: name: Andronov, Mikhail G.
name: Fedorov, Maxim V.
name: Sosnin, Sergey
Publisher: name: Zenodo
Year: 2021

description: Supplementary material for "Exploring Chemical Reaction Space With Reaction Difference Fingerprints and Parametric t-SNE" binary models (saved_models.zip) Supplementary Information pdf file The code is available on GitHub: https://github.com/Academich/reaction_space_ptsne Models placed here because there are too heavy for GitHub.