cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Molecule-molecule and atom-molecule collisions with ultracold RbCs molecules
Creators: name: Gregory, Philip D.
name: Blackmore, Jacob A.
name: Frye, Matthew D.
name: Fernley, Luke M.
name: Bromley, Sarah L.
name: Hutson, Jeremy M.
name: Cornish, Simon L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Understanding ultracold collisions involving molecules is of fundamental importance for current experiments, where inelastic collisions typically limit the lifetime of molecular ensembles in optical traps. Here we present a broad study of optically trapped ultracold RbCs molecules in collisions with one another, in reactive collisions with Rb atoms, and in nonreactive collisions with Cs atoms. For experiments with RbCs alone, we show that by modulating the intensity of the optical trap, such that the molecules spend 75% of each modulation cycle in the dark, we partially suppress collisional loss of the molecules. This is evidence for optical excitation of molecule pairs mediated via sticky collisions. We find that the suppression is less effective for molecules not prepared in the spin-stretched hyperfine ground state. This may be due either to longer lifetimes for complexes or to laser-free decay pathways. For atom-molecule mixtures, RbCs+Rb and RbCs+Cs, we demonstrate that the rate of collisional loss of molecules scales linearly with the density of atoms. This indicates that, in both cases, the loss of molecules is rate-limited by two-body atom-molecule processes. For both mixtures, we measure loss rates that are below the thermally averaged universal limit.
description: 21 pages, 9 figures
title: Front Matter, Table of Contents, Preface, Conference Organization
Creators: name: Papadimitriou, Christos H.
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2017
Subjects: subject: Front Matter
subject: Table of Contents
subject: Preface
subject: Conference Organization

description: Front Matter, Table of Contents, Preface, Conference Organization
description: LIPIcs, Vol. 67, 8th Innovations in Theoretical Computer Science Conference (ITCS 2017), pages 0:i-0:x
Set Linear Algebra and Set Fuzzy Linear Algebra
Creators: name: Kandasamy, W. B. Vasantha
name: Smarandache, Florentin
name: Ilanthenral, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics
subject: 04-xx, 11-xx

description: In this book, the authors define the new notion of set vector spaces which is the most generalized form of vector spaces. Set vector spaces make use of the least number of algebraic operations, therefore, even a non-mathematician is comfortable working with it. It is with the passage of time, that we can think of set linear algebras as a paradigm shift from linear algebras. Here, the authors have also given the fuzzy parallels of these new classes of set linear algebras. This book is divided into seven chapters. The first chapter briefly recalls some of the basic concepts in order to make this book self-contained. Chapter two introduces the notion of set vector spaces which is the most generalized concept of vector spaces. Set vector spaces lends itself to define new classes of vector spaces like semigroup vector spaces and group vector spaces. These are also generalization of vector spaces. The fuzzy analogue of these concepts are given in Chapter three. In Chapter four, set vector spaces are generalized to biset bivector spaces and not set vector spaces. This is done taking into account the advanced information technology age in which we live. As mathematicians, we have to realize that our computer-dominated world needs special types of sets and algebraic structures. Set n-vector spaces and their generalizations are carried out in Chapter five. Fuzzy n-set vector spaces are introduced in the sixth chapter. The seventh chapter suggests more than three hundred problems.
description: 344 pages
Explosive ejections generated by gravitational interactions
Creators: name: Rivera-Ortiz, Pedro Ruben
name: Rodríguez-González, Ary
name: Cantó, Jorge
name: Zapata, Luis Alberto
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: During the fragmentation and collapse of a molecular cloud, it is expected to have close encounters between (proto)stellar objects that can lead to the ejection of a fraction of them as runaway objects. However, the duration and the consequences of such encounters perhaps are small such that there is no direct evidence of their occurrence. As a first approximation, in this work, we analytically analyze the interaction of a massive object that moves at high velocity into a cluster of negligible mass particles with an initial number density distribution $\propto R^{-α}$. We have found that the runaway conditions of the distribution after the encounter are related to the mass and the velocity of the star and the impact parameter of each particle to the stellar object. Then, the cluster particles are gravitationally accelerated by the external approaching star, destroying the cluster and the dispersion and velocities of the particles have explosive characteristics. We compare this analytical model with several numerical simulations and finally, we applied our results to the Orion Fingers in the Orion BN/KL region, which show an explosive outflow that could be triggered by the gravitational interaction of several (proto)stellar objects.
description: 12 pages
Elastic and Chemical Contributions to the Stability of Magnetic Surface Alloys on Ru(0001)
Creators: name: Marathe, Madhura
name: Imam, Mighfar
name: Narasimhan, Shobhana
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have used density functional theory to study the structural stability of surface alloys. Our systems consist of a single pseudomorphic layer of $M_xN_{1-x}$ on the Ru(0001) surface, where $M$ = Fe or Co, and $N$ = Pt, Au, Ag, Cd, or Pb. Several of the combinations studied by us display a preference for atomically mixed configurations over phase-segregated forms. We have also performed further {\it ab initio} calculations to obtain the parameters describing the elastic interactions between atoms in the alloy layer, including the effective atomic sizes at the surface. We find that while elastic interactions favor alloying for all the systems considered by us, in some cases chemical interactions disfavor atomic mixing. We show that a simple criterion (analogous to the Hume-Rothery first law for bulk alloys) need not necessarily work for strain-stabilized surface alloys, because of the presence of additional elastic contributions to the alloy heat of formation, that will tend to oppose phase segregation.
description: 10 pages, 8 figures Submitted To Phys. Rev. B
Shifting Priorities from Equity to Exclusion: Investigating US Transportation Policy Changes in the Anti-DEI Era
Creators: name: Grajdura, Sarah
name: Palm, Matthew
name: Rowangould, Dana
name: Barajas, Jesus M.
name: Karner, Alex
Publisher: name: Network Design Lab - Transport Findings
Year: 2025

description:
In early 2025, the US Department of Transportation (DOT) presented new criteria for discretionary funding prioritization based on marriage rates, birth rates, and compliance with Federal immigration policy. This policy diverges from the previous equity and justice-focused prioritization. We analyze how the new DOT policy will affect discretionary transportation spending priorities across geography, sociodemographics, transportation burdens and barriers, and voting lines. The new 2025 DOT policy shifts funding priorities towards white, Trump-voting areas and away from Black, Latino, and lower-resourced populations and those experiencing higher travel burdens and barriers.
On characterizing nilpotent Lie algebra by their multiplier, $ s(L)=6, 7
Creators: name: Shamsaki, A.
name: Niroomand, P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: Let $ L $ be an $ n $-dimensional non-abelian nilpotent Lie algebra and $ s(L)=\frac{1}{2}(n-1)(n-2)+1-\dim \mathcal{M}(L) $ where $ \mathcal{M}(L) $ is the Schur multiplier of a Lie algebra $ L. $ The structures of nilpotent Lie algebras $ L $ when $ s(L)\in \lbrace 0,1,2,3,4,5\rbrace $ are determined. In this paper, we classify all non-abelian nilpotent Lie algebras $ L $ when $ s(L)=6,7. $
APPEEC 2018 - Power System Planning and Operation
Creators: C. Haiqing
M.Gu
L. Meegahapola
K.L. Wong
H. Setiadi
N. Mithulananthan
R. Shah
Y. Lin
H. Wickramasinghe
G. Konstantinou
P. Herbert
G. Clare
A. Jayadas
M. Balasubramanian
M. Al Dahmi
Q. Wang
S. Wang
Z. Shi
Publisher: name: IEEE
Year: 2018

Technical Session
This presentation was part of the 2018 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APEEC), sponsored by the IEEE Power & Energy Society (PES). The conference was held October 7-10, 2018 in Kota Kinabalu, Malaysia.
Synchrophasor Technology in Distribution Systems
Creators: S. Hendabadi
D. Gabel
A. McEachern
Y. Liu
S. Murphy
E. Udren
Publisher: name: IEEE
Year: 2018

2018 PES T&D Panel Presentation
Deployment of synchrophasor technology has seen significant growth in the electric power transmission systems in the recent years. The use of synchrophasor technology in distribution systems is, however, in its very early stages. The business case for deployment of synchrophasor systems with high accuracy and large volume of data for distribution applications is more challenging than that for transmission applications. This panel will look into recent developments in synchrophasor technology for distribution applications; discuss several applications of interest including topology detection, grid modeling, post-mortem analysis, fault location, falling conductor protection, detecting cyberattacks and microgrid controls; and address recent deployment efforts and challenges, including PMU placement strategy, integration with and support of other applications that do not necessarily need, but can benefit from, synchrophasor measurements, as well as other infrastructure support challenges.
Impact of Fast Primary Regulation and Synthetic Inertia on Grid Frequency Control
Creators: Silvia Canevese
Adriano Iaria
Marco Raffaele Rapizza
Publisher: name: IEEE
Year: 2017

2017 PES ISGT Europe
This presentation was part of the 7th IEEE International Conference on Innovative Smart Grid Technologies: ISGT Europe 2017, sponsored by the IEEE Power & Energy Society (PES). The conference was held from on September 26-29, 2017 at Politecnico di Torino in Torino, Italy.
Expansion Planning of Active Power Supply Systems
Creators: Nikolai Voropai
Konstantin Suslov
Elena Stashkevich
Ilia Sshushpanov
Pham Trung Son
Publisher: name: IEEE
Year: 2017

2017 PES ISGT Europe
This presentation was part of the 7th IEEE International Conference on Innovative Smart Grid Technologies: ISGT Europe 2017, sponsored by the IEEE Power & Energy Society (PES). The conference was held from on September 26-29, 2017 at Politecnico di Torino in Torino, Italy.
Methodology for the Determination of Real-Time Dynamic Line Ratings for Secure Operation of Overhead Conductors
Creators: Bonface Ngoko
Hideharu Sugihara
Tsuyoshi Funaki
Publisher: name: IEEE
Year: 2017

2017 PES ISGT Europe
This presentation was part of the 7th IEEE International Conference on Innovative Smart Grid Technologies: ISGT Europe 2017, sponsored by the IEEE Power & Energy Society (PES). The conference was held from on September 26-29, 2017 at Politecnico di Torino in Torino, Italy.
Modeling and simulation of interface failure in metal-composite hybrids
Creators: name: Hirsch, Franz
name: Natkowski, Erik
name: Kästner, Markus
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The application of hybrid composites in lightweight engineering enables the combination of material-specific advantages of fiber-reinforced polymers and classical metals. The interface between the connected materials is of particular interest since failure often initializes in the bonding zone. In this contribution the connection of an aluminum component and a glass fiber-reinforced epoxy is considered on the microscale. The constitutive modeling accounts for adhesive failure of the local interfaces and cohesive failure of the bulk material. Interface failure is represented by cohesive zone models, while the behavior of the polymer is described by an elastic-plastic damage model. A gradient-enhanced formulation is applied to avoid the well-known mesh dependency of local continuum damage models. The application of numerical homogenization schemes allows for the prediction of effective traction-separation relations. Therefore, the influence of the local interface strength and geometry of random rough interfaces on the macroscopical properties is investigated in a numerical study. There is a positive effect of an increased roughness on the effective joint behavior.
description: Accepted manuscript
Spatial Load Forecasting of Electric Vehicle Charging using GIS and Diffusion Theory
Creators: Fabian Heymann
Carlo A. N. Pereira
Filipe Joel Soares
Vladimiro Miranda
Publisher: name: IEEE
Year: 2017

2017 PES ISGT Europe
This presentation was part of the 7th IEEE International Conference on Innovative Smart Grid Technologies: ISGT Europe 2017, sponsored by the IEEE Power & Energy Society (PES). The conference was held from on September 26-29, 2017 at Politecnico di Torino in Torino, Italy.
Cavity-QED based on collective magnetic dipole coupling: spin ensembles as hybrid two-level systems
Creators: name: Imamoglu, Atac
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze the magnetic dipole coupling of an ensemble of spins to a superconducting microwave stripline structure, incorporating a Josephson junction based transmon qubit. We show that this system is described by an embedded Jaynes-Cummings model: in the strong coupling regime, collective spin-wave excitations of the ensemble of electrons pick up the nonlinearity of the cavity mode, such that the two lowest eigenstates of the coupled spin-wave + microwave-cavity + Josephson-junction system define a hybrid two-level system. The proposal described here enables the use of spin ensembles as qubits which can be coherently manipulated and coupled using the same nonlinear-cavity. Possibility of strong-coupling cavity-QED with magnetic-dipole transitions opens up the possibility of extending previously proposed quantum information processing protocols to spins in silicon or graphene, without the need for single-electron confinement.
description: 4 pages
Spin-transfer torque induced reversal in magnetic domains
Creators: name: Murugesh, S.
name: Lakshmanan, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Using the complex stereographic variable representation for the macrospin, from a study of the nonlinear dynamics underlying the generalized Landau-Lifshitz(LL) equation with Gilbert damping, we show that the spin-transfer torque is effectively equivalent to an applied magnetic field. We study the macrospin switching on a Stoner particle due to spin-transfer torque on application of a spin polarized current. We find that the switching due to spin-transfer torque is a more effective alternative to switching by an applied external field in the presence of damping. We demonstrate numerically that a spin-polarized current in the form of a short pulse can be effectively employed to achieve the desired macro-spin switching.
description: 16 pages, 6 figures
Security and Analysis of Data from Smart Meters for Adopting in Distribution System State Estimation
Creators: A. Majumdar
Z. Wang
O. Krause
Publisher: name: IEEE
Year: 2018

2018 PES GM Panel Presentation
The current state estimation function in the DMS relies on a very limited number of SCADA measurements, but this number will increase significantly owing to the high penetration of DERs and the large number of field sensors. The introduction of smart meters and PMUs at the distribution level will offer considerable advantages in terms of enhanced monitoring and control. However, the huge amount of continuous data will pose computational and communication challenges. In addition to this, the growing communication and ICT
Holographic Geometric Entropy at Finite Temperature from Black Holes in Global Anti de Sitter Spaces
Creators: name: Bah, Ibrahima
name: Zayas, Leopoldo A. Pando
name: Terrero-Escalante, Cesar A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using a holographic proposal for the geometric entropy we study its behavior in the geometry of Schwarzschild black holes in global $AdS_p$ for $p=3,4,5$. Holographically, the entropy is determined by a minimal surface. On the gravity side, due to the presence of a horizon on the background, generically there are two solutions to the surfaces determining the entanglement entropy. In the case of $AdS_3$, the calculation reproduces precisely the geometric entropy of an interval of length $l$ in a two dimensional conformal field theory with periodic boundary conditions. We demonstrate that in the cases of $AdS_{4}$ and $AdS_{5}$ the sign of the difference of the geometric entropies changes, signaling a transition. Euclideanization implies that various embedding of the holographic surface are possible. We study some of them and find that the transitions are ubiquitous. In particular, our analysis renders a very intricate phase space, showing, for some ranges of the temperature, up to three branches. We observe a remarkable universality in the type of results we obtain from $AdS_4$ and $AdS_5$.
description: v2: 33 pages, 9 figures. Added an appendix. Other minor modifications to clarify the contents
One Year in the Life of Young Suns: Data Constrained Corona-Wind Model of kappa1 Ceti
Creators: name: Airapetian, Vladimir S.
name: Jin, Meng
name: Lueftinger, Theresa
name: Saikia, Sudesha Boro
name: Kochukhov, Oleg
name: Guedel, Manuel
name: Van Der Holst, Bart
name: Manchester, W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The young magnetically active solar-like stars are efficient generators of ionizing radiation in the form of X-ray and Extreme UV (EUV) flux, stellar wind and eruptive events. These outputs are the critical factors affecting atmospheric escape and chemistry of (exo)planets around active stars. While X-ray fluxes and surface magnetic fields can be derived from observations, the EUV emission and wind mass fluxes, Coronal Mass Ejections and associated Stellar Energetic Particle events cannot be directly observed. Here, we present the results of a three-dimensional magnetohydrodynamic (MHD) model with inputs constrained by spectropolarimetric data, HST/STIS Far UV, X-ray data data and stellar magnetic maps reconstructed at two epochs separated by 11 months. The simulations show that over the course of the year, the global stellar corona had undergone a drastic transition from a simple dipole-like to a tilted dipole with multipole field components, and thus, provided favorable conditions for Corotating Interaction Events (CIRs) that drive strong shocks. The dynamic pressure exerted by CIRs are 1300 times larger than those observed from the Sun and can contribute to the atmospheric erosion of early Venus, Earth, Mars and young Earth-like exoplanets. Our data-constrained MHD model provides the framework to model coronal environments of G-M planet hosting dwarfs. The model outputs can serve as a realistic input for exoplanetary atmospheric models to evaluate the impact of stellar coronal emission, stellar winds and CIRs on their atmospheric escape and chemistry that can be tested in the upcoming JWST and ground-based observations.
description: 28 pages, 8 figures
Uniqueness of the stationary distribution and stabilizability in Zhang's sandpile model
Creators: name: Fey, Anne
name: Liu, Haiyan
name: Meester, Ronald
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 60K35

description: We show that Zhang's sandpile model (N,[a,b]) on N sites and with uniform additions on [a,b] has a unique stationary measure for all 0 <= a < b <= 1. This generalizes earlier results where this was shown in some special cases. We define the infinite volume Zhang's sandpile model in dimension d >= 1, in which topplings occur according to a Markov toppling process, and we study the stabilizability of initial configurations chosen according to some measure μ. We show that for a stationary ergodic measure μwith density ρ, for all ρ< 1/2, μis stabilizable; for all ρ>= 1, μis not stabilizable; for 1/2 <= ρ< 1, when ρis near to 1/2 or 1, both possibilities can occur.
description: 22 pages
Decoding Beta-Decay Systematics: A Global Statistical Model for Beta^- Halflives
Creators: name: Costiris, N. J.
name: Mavrommatis, E.
name: Gernoth, K. A.
name: Clark, J. W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: Astrophysics (astro-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Statistical modeling of nuclear data provides a novel approach to nuclear systematics complementary to established theoretical and phenomenological approaches based on quantum theory. Continuing previous studies in which global statistical modeling is pursued within the general framework of machine learning theory, we implement advances in training algorithms designed to improved generalization, in application to the problem of reproducing and predicting the halflives of nuclear ground states that decay 100% by the beta^- mode. More specifically, fully-connected, multilayer feedforward artificial neural network models are developed using the Levenberg-Marquardt optimization algorithm together with Bayesian regularization and cross-validation. The predictive performance of models emerging from extensive computer experiments is compared with that of traditional microscopic and phenomenological models as well as with the performance of other learning systems, including earlier neural network models as well as the support vector machines recently applied to the same problem. In discussing the results, emphasis is placed on predictions for nuclei that are far from the stability line, and especially those involved in the r-process nucleosynthesis. It is found that the new statistical models can match or even surpass the predictive performance of conventional models for beta-decay systematics and accordingly should provide a valuable additional tool for exploring the expanding nuclear landscape.
description: 20 pages, 19 figures
Analysis of Water Booster Pressure Systems as Dispatchable Loads in Smart-Grids
Creators: Cesar Diaz
Fredy Ruiz
Diego Patino
Publisher: name: IEEE
Year: 2017

2017 PES ISGT Europe
This presentation was part of the 7th IEEE International Conference on Innovative Smart Grid Technologies: ISGT Europe 2017, sponsored by the IEEE Power & Energy Society (PES). The conference was held from on September 26-29, 2017 at Politecnico di Torino in Torino, Italy.
Soft magnetic microrobot doped with porous silica for stability-enhanced multimodal locomotion in nonideal environment
Creators: name: Li, Shangsong
name: Liu, Dong
name: Hu, Yuping
name: Su, Zhijie
name: Zhang, Xinai
name: Guo, Ruirui
name: Li, Dan
name: Lu, Yuan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: As an emerging field of robotics, magnetic-field-controlled soft microrobot has broad application prospects for its flexibility, locomotion diversity as well as remote controllability. Magnetic soft microrobots can perform multimodal locomotion under the control of a magnetic field, which may have potential applications in precision medicine. However, previous researches mainly focus on new locomotion in a relatively ideal environment, lacking exploration on the ability of magnetic microrobot locomotion to resist external disturbances and proceed in a nonideal environment. Here, a porous silica-doped soft magnetic microrobot is constructed for enhanced stability of multimodal locomotion in the nonideal biological environment. Porous silica spheres are doped into NdFeB-silicone elastomer base, improving adhesion properties as well as refining the comprehensive mechanical properties of the microrobot. Multimodal locomotions are achieved, and the influence of porous silica doping on the stability of each locomotion in nonideal environment is explored in depth. Motions in nonideal circumstances such as climbing, loading, current rushing, wind blowing, and obstacle hindering are conducted successfully with porous silica doping. Such a stability-enhanced multimodal locomotion system can be used in biocatalysis as well as thrombus removal, and its prospect for precision medicine is highlighted by in vivo demonstration of multimodal locomotion with nonideal disturbance.
description: 55 pages and 11 figures for the main body, 43 pages and 11 figures for the supplementary information
Foreground removal from CMB temperature maps using an MLP neural network
Creators: name: Norgaard-Nielsen, H. U.
name: Jorgensen, H. E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: One of the main obstacles in extracting the Cosmic Microwave Background (CMB) signal from observations in the mm-submm range is the foreground contamination by emission from galactic components: mainly synchrotron, free-free and thermal dust emission. Due to the statistical nature of the intrinsic CMB signal it is essential to minimize the systematic errors in the CMB temperature determinations. Following the available knowledge of the spectral behavior of the galactic foregrounds simple, power law-like spectra have been assumed. The feasibility of using a simple neural network for extracting the CMB temperature signal from the combined CMB and foreground signals has been investigated. As a specific example, we have analysed simulated data, like that expected from the ESA Planck Surveyor mission. A simple multilayer perceptron neural network with 2 hidden layers can provide temperature estimates, over more than 80 percent of the sky, that are to a high degree uncorrelated with the foreground signals. A single network will be able to cover the dynamic range of the Planck noise level over the entire sky.
description: Accepted for publication in Astrophysics and Space Science
Conductance of a Conjugated Molecule with Carbon Nanotube Contacts
Creators: name: Bruque, Nicolas A.
name: Ashraf, M. K.
name: Lake, Roger K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Calculations of the conductance of a carbon nanotube (CNT)-molecule-CNT structure are in agreement with experimental measurements [1]. The features in the transmission correspond directly to the features of the isolated molecular orbitals. The HOMO provides conductance at low bias that is relatively insensitive to the end groups of the cut CNTs, the cut angle, or the number of molecular bridges. A molecular conformation change not directly in the path of the carrier transport increases the resistance by over 2 orders of magnitude. [1] X. Guo, J. P. Small, J. E. Klare, Y. Wang, M. S. Purewal, I. W. Tam, B. H. Hong, R. Caldwell, L. Huang, S. O'Brien, et al., Science 311, 356 (2006), URL http://www.sciencemag.org/cgi/content/abstract/311/5759/356
description: 15 Pages, 4 figures, 1 table
Holistic Validation of Cyber-Physical Energy System
Creators: Van Hoa Nguyen
Publisher: name: IEEE
Year: 2017

2017 PES ISGT Europe
This presentation was part of the 7th IEEE International Conference on Innovative Smart Grid Technologies: ISGT Europe 2017, sponsored by the IEEE Power & Energy Society (PES). The conference was held from on September 26-29, 2017 at Politecnico di Torino in Torino, Italy.
Accounting for aid: estimating the impact of United States’ global health investments on mortality among women of reproductive age using synthetic control and Bayesian methods
Creators: name: Cohen, Robert L
name: Majid, Farhan
name: Lucas, Rachel
name: Singh, Kavita
name: Choudhury, Allysha
name: Gawande, Atul A
name: Angeles, Gustavo
name: Weiss, William
name: Ahsan, Karar Zunaid
name: Taylor, Tory M
Publisher: name: International Society of Global Health
Year: 2025

description:
Background: The United States government (USG) is a key global actor in preventing mortality and supporting lifesaving health services among women and children in low- and middle-income countries (LMICs). Since the Foreign Assistance Act of 1961, USG has funded global health programmes targeting specific conditions and strengthening health systems for the delivery of essential services via the United States Agency for International Development (USAID) and other USG agencies. However, directly quantifying and attributing the impact of USG health investments is challenging due to the inability of conducting randomised control trials for such large programmes at scale. In this study, we compared two quasi-experimental impact evaluation approaches to estimate the effects of sustained USG health investments on mortality among women of reproductive age (WRA). Methods: We employed synthetic control analysis and a Bayesian alternative to synthetic control to estimate the impact of USG's global health investments on WRA mortality rate across 16 LMICs that received sustained, multifaceted, and above-average USAID global health funding levels from 2005 to 2019. Results: Countries receiving sustained, multifaceted, and above-average USAID global health funding had a reduction in the annual WRA mortality rate by 0.65 deaths per 1000 WRA throughout the post-treatment period. For the years (i.e. 2009-2019) where the effect estimates are statistically significant (P < 0.001), the reduction in WRA mortality rate was 0.80 deaths per 1000 WRA. Sensitivity analyses and Bayesian modelling supported the robustness of these findings. We conservatively estimated that about 1.0-1.3 million WRA deaths were averted in study countries between 2009 and 2019 as a result of USG health investments. Conclusions: Our results suggest that well-funded donor initiatives can substantially reduce WRA mortality rates beyond what would have been achieved without such investments. Sustained donor investments significantly reduce WRA mortality, underscoring the transformative potential of well-funded global health initiatives. Our study also demonstrates that synthetic control and Bayesian models are valuable tools for evaluating the impact of large-scale global health financing.
Contribution for the Development of Smart Grid Technology
Creators: P. Mandal
S. Mukhopadhyay
Y. Guo
Publisher: name: IEEE
Year: 2018

2018 PES GM Panel Presentation
This panel session is devoted to contribution to smart grid technology from different angles right from generation to utilization of energy going via transmission & distribution with more and more development of renewable energy sources resources. Achievement of high degree of efficiency, quality of electricity, cost minimization, sustainability, optimum utilization of existing assets, etc. with innovative technology are the aspects that are expected to be reported upon.
NSV 13983: A New Dwarf Nova in the Period Gap
Creators: name: Contreras, C.
name: Tappert, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Aims. NSV 13983 is catalogued as a dwarf nova based on a reported outburst from 2005. The system has not yet been studied spectroscopically. We attempt to confirm its nature as a dwarf nova and determine its orbital period. Methods. We derive the orbital period by using time-resolved spectroscopic data to measure radial velocities. Results. The average spectrum shows evidence that the system is a dwarf nova in quiescence. The radial velocity curves derived from measurements of the spectral lines Hαand Hβ, show a clear modulation with a period of 2.76 h. This places NSV 13983 below the upper edge of the gap in the period distribution of cataclysmic variables, implying that it is the 14th dwarf nova in the gap.
description: 3 pages, 4 figures, 1 tables, accepted by A&A
Solar Power Plant Grounding System Design Practices
Creators: A. Shah
R. Schaerper
J. Brown
Publisher: name: IEEE
Year: 2018

2018 PES GM Panel Presentation
Utility scale photovoltaic (PV) Solar Power Plant (SPP) design typically results in a very large and complex grounding system. An accurate knowledge of the performance of the interconnected grounding system requires detailed analysis in software, taking into consideration varying soil conditions and faults through different areas of the SPP. Similarly, the size of the grounding system introduces challenges. The panel will discuss some of the factors that must be considered, limitations on existing analytical methods, and presents general guidance based on typical industry practice and code requirements in this new but evolving field. This Panel Session discusses the many challenges faced by the design engineer to provide an effective solar power plant grounding system with the focus on personnel safety. The following topics are covered: a. Overview or Grounding Design for Solar Power Plants b. Challenges with Solar Power Plant Grounding c. Industry Practices with Relationship to Solar Plant Grounding d. Analytical Approaches and Use of Software for Solar Power Plant Grounding
Quaternion-Loop Quantum Gravity
Creators: name: Maia, M. D.
name: Silva, S. S. e Almeida
name: Carvalho, F. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is shown that the Riemannian curvature of the 3-dimensional hypersurfaces in space-time, described by the Wilson loop integral, can be represented by a quaternion quantum operator induced by the SU(2) gauge potential, thus providing a justification for quaternion quantum gravity at the Tev energy scale.
description: 5 pages, latex, no figures. Improved pdf. To appear in the Foundations of Physics
title: „Ich hatte ein paar mehr Kämpfe auszustehen als mein Mann.“ Dual-Career-Couples auf der Suche nach den Faktoren für gutes Leben und Arbeiten in der Wissenschaft
Creators: name: Leinfellner, Stefanie
Publisher: name: Humboldt-Universität zu Berlin
Year: 2014
Subjects: subject: Doppelkarriere
subject: Familie
subject: Gatekeeping
subject: Geschlechter(un)gleichheit
subject: Karriere
subject: Qualitative Interviews
subject: Vereinbarkeit
subject: Wissenschaft
subject: ddc:300

description: Der Beitrag beleuchtet das bislang nicht gelöste Dilemma der Vereinbarkeit von wissenschaftlicher Karriere und Familie sowie die Strategien von Dual-Career-Familien vor dem Hintergrund gesamtgesellschaftlicher Veränderungsprozesse auf der Ebene von Geschlecht. Anhand von empirischem Datenmaterial wird der Frage nachgegangen, welche Faktoren im lebens- und arbeitsweltlichen Kontext aus der Perspektive der befragten Doppelkarrierefamilien das Ausbalancieren von doppelter Karriere im Wissenschaftssystem als Arbeitsort mit Partnerschaft und Familie fördern oder hemmen. Es werden zunächst Schnittstellen und Kontexte des Dual- Career-Diskurses rekapituliert und anschließend mit Hilfe von Paarinterview-Ausschnitten Rahmenbedingungen für Karrieren in der Wissenschaft sowie deren Verwobenheit mit der vergeschlechtlichten Organisation der Familien- und Reproduktionsarbeit analysiert.
Criticality-enhanced quantum sensor at finite temperature
Creators: name: Wu, Wei
name: Shi, Chuan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Conventional criticality-based quantum metrological schemes work only at zero or very low temperature because the quantum uncertainty around the quantum phase-transition point is generally erased by thermal fluctuations with the increase of temperature. Such an ultralow-temperature requirement severely restricts the development of quantum critical metrology. In this paper, we propose a thermodynamic-criticality-enhanced quantum sensing scenario at finite temperature. In our scheme, a qubit is employed as a quantum sensor to estimate parameters of interest in the Dicke model which experiences a thermodynamic phase transition. It is revealed that the thermodynamic criticality of the Dicke model can significantly improve the sensing precision. Enriching the scope of quantum critical metrology, our finding provides a possibility to realize highly sensitive quantum sensing without cooling.
Input Impedance and Gain of a Gigahertz Amplifier Using a DC SQUID in a Quarter Wave Resonator
Creators: name: Spietz, Lafe
name: Irwin, Kent
name: Aumentado, Jose
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Due to their superior noise performance, SQUIDs are an attractive alternative to high electron mobility transistors for constructing ultra-low-noise microwave amplifiers for cryogenic use. We describe the use of a lumped element SQUID inductively coupled to a quarter wave resonator. The resonator acts as an impedance transformer and also makes it possible for the first time to accurately measure the input impedance and intrinsic microwave characteristics of the SQUID. We present a model for input impedance and gain, compare it to the measured scattering parameters, and describe how to use the model for the systematic design of low-noise microwave amplifiers with a wide range of performance characteristics.
T&D Latin America 2018 - Latin America IEEE PES Chapter Leaders Training
Creators: S. Leon
M. Armstrong
D. Novosel
P. Ryan
G. Gonzalez
T. Ribeiro de Alencar
G. Taranto
J. Quiros
J. Cepeda
J. Vega
Publisher: name: IEEE
Year: 2018

Training
IEEE PES T&D LA is the premiere event for electric utility professionals, contracting, construction, and consulting companies who are interested in the hands-on solutions for the engineering, construction, operation, and maintenance of the world's power transmission and distribution systems.
GMD Modeling, Tools, and Future Research in the Context of NERC GMD Standard TPL-007
Creators: M. Olson
T. Overbye
K. Patil
R. Walling
B. Arritt
A. Rezaei-Zare
R. Girgis
J. Gannon
D. Boteler
A. Haddadi
Publisher: name: IEEE
Year: 2018

2018 PES GM Panel Presentation
The existing methods for the simulation of GMD effects in transformers and power systems are based on different approaches. The prominent techniques are analytical methods, time-domain simulation, phasor-based analysis, and FEM methods. These methods are currently used in the academic research as well as the commercial tools to address the industrial needs. The purpose of this panel is to discuss the challenges that these methods are facing with and identify the road map for future research and improvement in this field. This session will also review the state-of-the art of tools and simulation techniques related to the analysis and simulation of geomagnetic disturbances (GMD). Interest and efforts in this area have grown significantly in response to NERC reliability standard TPL-007. Some of the areas to be covered include earth impedance modeling (e.g., 1D, 3D, coastal effects), transformers, simulation techniques required for compliance with the NERC GMD standards.
CSR in an Asymmetric Duopoly with Environmental Externalities
Creators: name: Lambertini, Luca
name: Palestini, Arsen
name: Tampieri, Alessandro
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2014
Subjects: SECS-P/01 Economia politica

description: We investigate a linear state dfferential game describing an asymmetric Cournot duopoly with capacity accumulation à la Ramsey and a negative environmental externality (pollution), in which one of the firms has adopted corporate social responsibility (CSR) in its statute, and therefore includes consumer surplus and the environmental effects of production in its objective function. If the market is sufficiently large, the CSR firm sells more, accumulates more capital and earns higher profits than its profit-seeking rival.
Measurements of the magnetic field strengths at the bases of stellar coronae using the magnetic-field-induced transition theory
Creators: name: Chen, Yajie
name: Liu, Xianyu
name: Tian, Hui
name: Bai, Xianyong
name: Jin, Meng
name: Li, Wenxian
name: Yang, Yang
name: Yang, Zihao
name: Deng, Yuanyong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Measurements of the magnetic field in the stellar coronae are extremely difficult. Recently, it was proposed that the magnetic-field-induced transition (MIT) of the Fe X 257 Å line can be used to measure the coronal magnetic field of the Sun. We performed forward modeling with a series of global stellar magnetohydrodynamics models to investigate the possibility of extending this method to other late-type stars. We first synthesized the emissions of several Fe X lines for each stellar model, then calculated the magnetic field strengths using the intensity ratios of Fe X 257 Å to several other Fe X lines based on the MIT theory. Finally, we compared the derived field strengths with those in the models, and concluded that this method can be used to measure at least the magnetic field strengths at the coronal bases of stars with a mean surface magnetic flux density about one order of magnitude higher than that of the Sun. Our investigation suggests the need of an extreme ultraviolet spectrometer to perform routine measurements of the stellar coronal magnetic field.
description: Accepted for publication in ApJL
A thermodynamic origin for the Cohen-Kaplan-Nelson bound
Creators: name: Ramakrishna, Satish
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Cohen-Kaplan-Nelson bound is imposed on the grounds of logical consistency (with classical General Relativity) upon local quantum field theories. This paper puts the bound into the context of a thermodynamic principle applicable to a field with a particular equation of state in an expanding universe. This is achieved without overtly appealing to either a decreasing density of states or a minimum coupling requirement, though they might still be consistent with the results described. We do so by defining an appropriate Helmholtz free energy which when extremized relative to a key parameter (the Hubble radius L) provides a scaling formula for the entropy with the Hubble radius (an exponent 'r' used in the text). We deduce that the CKN bound is one solution to this extremization problem (with r=3/2), but there are others consistent with r=2. The paper establishes that the holographic principle applied to cosmology is consistent with minimizing the free energy of the universe in the canonical ensemble, upon the assumption that the ultraviolet cutoff is a function of the causal horizon scale.
Spin-orbit interaction and spin relaxation in a two-dimensional electron gas
Creators: name: Studer, M.
name: Schön, S.
name: Ensslin, K.
name: Salis, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Using time-resolved Faraday rotation, the drift-induced spin-orbit Field of a two-dimensional electron gas in an InGaAs quantum well is measured. Including measurements of the electron mobility, the Dresselhaus and Rashba coefficients are determined as a function of temperature between 10 and 80 K. By comparing the relative size of these terms with a measured in-plane anisotropy of the spin dephasing rate, the D'yakonv-Perel' contribution to spin dephasing is estimated. The measured dephasing rate is significantly larger than this, which can only partially be explained by an inhomogeneous g-factor.
description: 6 pages, 5 figures
A direct proof of Z-stability for AH algebras of bounded topological dimension
Creators: name: Dadarlat, Marius
name: Phillips, N. Christopher
name: Toms, Andrew S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L35; 46L80

description: We prove that a unital simple approximately homogeneous (AH) C*-algebra with no dimension growth absorbs the Jiang-Su algebra tensorially without appealing to the classification theory of these algebras. Our main result continues to hold under the slightly weaker hypothesis of exponentially slow dimension growth.
description: 15 pages, no figures
2/20 Plenary Panel Session: Distribution and Transmission Planning for the Grid of the Future, Track 3: Distribution and Transmission Planning for the Grid of the Future
Creators: I. Gyuk
P. Balducci
T. Nguyen
R. Concepcion
E. Ntakou
J. Liu
N. Abdullah
V. Cushing
K. Kulak
J. Eddy
F. Albuyeh
R. Roualt
Publisher: name: IEEE
Year: 2020

2020 PES ISGT NA Panel Sessions from Feb. 20th, Track 3 - Distribution and Transmission Planning for the Grid of the Future
This product contains the following Feb. 20th panel sessions from Track 3 - Distribution and Transmission Planning for the Grid of the Future

Grid Scale Energy Storage: Resilience and Sustainability
By: I. Gyuk, DOE

Energy Storage for Resilience Applications
By: P. Balducci, PNNL

Sizing Energy Storage for Resilience Application
T. Nguyen, Sandia National Laboratories

QuESt: An open source Python tool for energy storage evaluation
By: R. Concepcion, Sandia National Laboratories

Locational and Temporal Valuation of DER/NWA for Sub-Transmission and Distribution Systems Based On a Marginal Costing Approach
By: E. Ntakou, Quanta Technology

IEEE-NERC JOC Activity Review
By: J. Liu, PJM Interconnection LLC

Incorporating NWA into Utility Planning and Procurement
By: N. Abdullah, ComEd

NYC Pilot: Buildings as Batteries: Opportunities and Challenges
By: V. Cushing, Qcoefficent

Contracting for Energy Storage
By: K. Kulak, Morgan Lewis & Bockius LLP

Sandia�s Microgrid Design Toolkit
By: J. Eddy, Sandia National Laboratories

Monitoring, Control, and Communications of DER for Grid Services
By: F. Albuyeh, OATI

Hardening Practices for Transmission Systems: Natural Disaster Mitigation and Resiliency
By: R. Roualt, PEPCO Holdings