cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Understanding the Effects of Permanent Faults in GPU's Parallelism Management and Control Units
Creators: name: Guerrero-Balaguera, Juan-David
name: Condia, Josie E. Rodriguez
name: Santos, Fernando F. dos
name: Sonza, Matteo
name: Rech, Paolo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences

description: Graphics Processing Units (GPUs) are over-stressed to accelerate High-Performance Computing applications and are used to accelerate Deep Neural Networks in several domains where they have a life expectancy of many years. These conditions expose the GPUs hardware to (premature) aging, causing permanent faults to arise after the usual end-of-manufacturing test. Techniques to assess the impact of permanent faults in GPUs are then strongly required, thus allowing to estimate the reliability risk and to possibly mitigate it. In this paper, we present a method to evaluate the effects of permanent faults affecting the GPU scheduler and control units, which are the most peculiar and stressed resources, along with the first figures that allow quantifying these effects. We characterize over 5.83x10^5 permanent fault effects in the scheduler and controllers of a gate-level GPU model. Then, we map the observed error categories in software by instrumenting the code of 13 applications and two convolutional neural networks, injecting more than 1.65x10^5 permanent errors. Our two-level fault injection strategy reduces the evaluation time from hundreds of years of gate-level evaluation to hundreds of hours.We found that faults in the GPU parallelism management units can modify the opcode, the addresses, and the status of thread(s) and warp(s). The large majority (up to 99%) of these hardware permanent errors impacts the running software execution. Errors affecting the instruction operation or resource management hang the code, while 45% of errors in the parallelism management or control-flow induce silent data corruptions.
title: Human Rights Protection in The Arab World: A Neo-Relativist Model
Creators: name: Alahmed, Fahad Khalifa jasim mubarak
Publisher: name: University of Central Lancashire
Year: 2023

description: The concept of human rights is considered as one of the main factors that promote humanity and dignity of a person in this world. This has led the international community to adopt the required measures to protect human rights internationally, such as the United Nations human rights agreements and their treaty bodies. Regional organisations have also followed suit and adopted their own human rights systems, including the League of Arab States (LAS). This research investigates the failure of the LAS in protecting human rights, primarily with reference to the Arab Spring. Therefore, improving the Arab human rights protection mechanisms is a priority. The human rights violations in the Arab region during the last three decades make it important to examine the Arab human rights system. Although the LAS attempted to adopt its own system to protect human rights, it failed to fulfil this target. Much research on the protection of Arab human rights has criticised the Arab human rights instruments. Most of them suggested reforming these instruments to become compatible with international human rights standards. Others have strictly preferred to adopt human rights which derived from culture and religion. A doctrinal analysis and socio-legal methods are used to determine the most appropriate mechanism to protect and promote human rights in the Arab World, through proposing the Neo-Relativist approach; that is, applying one of the existences attempts of reconciling universalism and cultural relativism on the Arab human rights instruments. The reverse moderate cultural relativism has been chosen to be utilised in the Neo-Relativist approach, which has been applied on some of the problematic provisions of the Arab human rights instruments. The main findings in this research are that Arab human rights instruments can be enhanced without major amendments and that adopting the Neo-Relativist approach indicates that cultures must be given more weight than international standards for a better protection of human rights in the Arab World. This research concludes by providing number of important recommendations to improve the statutes of human rights in the Arab region.
Rotation equivalence and cocycle superrigidity
Creators: name: Calderoni, Filippo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics

description: We analyze Euclidean spheres in higher dimensions and the corresponding orbit equivalence relations induced by the group of rational rotations from the viewpoint of descriptive set theory. It turns out that such equivalence relations are not treeable in dimension greater than $2$. Then we show that the rotation equivalence relation in dimension $n \geq 5$ is not Borel reducible to the one in any lower dimension. Our methods combine a cocycle superrigidity result from the works of Furman and Ioana with the superrigidity theorem for $S$-arithmetic groups of Margulis. We also apply our techniques to give a geometric proof of the existence of uncountably many pairwise incomparable equivalence relations up to Borel reducibility.
description: Final version. Accepted for publication on the Journal of the London Mathematical Society
Feature-specific correlation of structural, optical, and chemical properties in the transmission electron microscope with hypermodal data fusion
Creators: name: Thersleff, Thomas
name: Tai, Cheuk-Wai
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Modern TEM instrumentation can probe a wide range of structural, optical, and chemical properties with unprecedented resolution. However, each of these properties must be recorded in independent datasets using different detector modes with no unifying framework currently available for quantitatively mapping their relationships onto chemically distinct features, particularly in complex morphologies. Here, we tackle this challenge by proposing a data acquisition and analysis workflow called "hypermodal data fusion," describing how to directly couple an arbitrary number of highly disparate detector modes including spectroscopy and scanning diffraction and jointly analyze them for correlations. We demonstrate this concept on a random collection of anatase and rutile nanoparticles, first detailing how to use core-loss EELS to unmix the different polymorphs despite three-dimensional overlap along the beam direction and then showing how this can be used to extract polymorph-specific composition, bandgaps, and crystal structure. We conclude with a discussion on the applicability of this workflow for a broad range of materials systems.
description: 18 pages, 8 figures
Thermal evolution of antiferromagnetic correlations and tetrahedral bond angles in superconducting FeTe$_{1-x}$Se$_x$
Creators: name: Xu, Zhijun
name: Schneeloch, J. A.
name: Wen, Jinsheng
name: Bozin, E. S.
name: Granroth, G. E.
name: Winn, B. L.
name: Feygenson, M.
name: Birgeneau, R. J.
name: Gu, Genda
name: Zaliznyak, I. A.
name: Tranquada, J. M.
name: Xu, Guangyong
Publisher: name: arXiv
Year: 2015
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: It has recently been demonstrated that dynamical magnetic correlations measured by neutron scattering in iron chalcogenides can be described with models of short-range correlations characterized by particular {choices of four-spin plaquettes, where the appropriate choice changes as the} parent material is doped towards superconductivity. Here we apply such models to describe measured maps of magnetic scattering as a function of two-dimensional wave vectors obtained for optimally superconducting crystals of FeTe$_{1-x}$Se$_x$. We show that the characteristic antiferromagnetic wave vector evolves from that of the bicollinear structure found in underdoped chalcogenides (at high temperature) to that associated with the stripe structure of antiferromagnetic iron arsenides (at low temperature); {these can both be described with the same local plaquette, but with different inter-plaquette correlations}. While the magnitude of the low-energy magnetic spectral weight is substantial at all temperatures, it actually weakens somewhat at low temperature, where the charge carriers become more itinerant. The observed change in spin correlations is correlated with the dramatic drop in the electronic scattering rate and the growth of the bulk nematic response on cooling. Finally, we also present powder neutron diffraction results for lattice parameters in FeTe$_{1-x}$Se$_x$ indicating that the tetrahedral bond angle tends to increase towards the ideal value on cooling, in agreement with the increased screening of the crystal field by more itinerant electrons and the correspondingly smaller splitting of the Fe $3d$ orbitals.
title: Strategic UK CCS Storage Appraisal - WP5C - Hamilton Storage Development Plan
Creators: name: Green, A.
name: D Gammer, D.
Publisher: name: ETI
Year: 2016
Subjects: subject: Carbon Capture and Storage
subject: FOSSIL FUELS: OIL, GAS and COAL (CO2 Capture and Storage)

description: Storage in the Ormskirk Sandstone in the faulted horst block known as Hamilton (UKCS block 110/13) in the East Irish Sea.3 well development of Hamilton from an unmanned platform supplied with CO2 from Point of Ayr via a 16” 26km pipeline.Final investment decision in 2022 and first injection in 2026.Capital investment of £114 million (PV10, 2015), equating to £0.9 for each tonne stored.The store can contain the 125Mt from the assumed CO2 supply profile of 5Mt/y for 25 years.Subsurface uncertainty is limited, but a complex transition needs to be engineered between early gas phase injection and later liquid phase injection.
Energy-optimal Three-dimensional Path-following Control of Autonomous Underwater Vehicles under Ocean Currents
Creators: name: Yang, Niankai
name: Shen, Chao
name: Johnson-Roberson, Matthew
name: Sun, Jing
Publisher: name: arXiv
Year: 2022
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper presents a three-dimensional (3D) energy-optimal path-following control design for autonomous underwater vehicles subject to ocean currents. The proposed approach has a two-stage control architecture consisting of the setpoint computation and the setpoint tracking. In the first stage, the surge velocity, heave velocity, and pitch angle setpoints are optimized by minimizing the required vehicle propulsion energy under currents, and the line-of-sight (LOS) guidance law is used to generate the yaw angle setpoint that ensures path following. In the second stage, two model predictive controllers are designed to control the vehicle motion in the horizontal and vertical planes by tracking the optimal setpoints. The proposed controller is compared with a conventional LOS-based control that maintains zero heave velocity relative to the current (i.e., relative heave velocity) and derives pitch angle setpoint using LOS guidance to reach the desired depth. Through simulations, we show that the proposed approach can achieve more than 13% energy saving on a lawnmower-type and an inspection mission under different ocean current conditions. The simulation results demonstrate that allowing motions with non-zero relative heave velocity improves energy efficiency in 3D path-following applications.
description: 8 pages, 7 figures
Constraining Gamma-Ray Emission from Luminous Infrared Galaxies with Fermi-LAT; Tentative Detection of Arp 220
Creators: name: Griffin, Rhiannon D.
name: Dai, Xinyu
name: Thompson, Todd A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Star-forming galaxies produce gamma-rays primarily via pion production, resulting from inelastic collisions between cosmic ray protons and the interstellar medium (ISM). The dense ISM and high star formation rates of luminous and ultra-luminous infrared galaxies (LIRGs and ULIRGs) imply that they should be strong gamma-ray emitters, but so far only two LIRGs have been detected. Theoretical models for their emission depend on the unknown fraction of cosmic ray protons that escape these galaxies before interacting. We analyze Fermi-LAT data for 82 of the brightest IRAS LIRGs and ULIRGs. We examine each system individually and carry out a stacking analysis to constrain their gamma-ray fluxes. We report the detection of the nearest ULIRG Arp 220 (~4.6sigma). We observe a gamma-ray flux (0.8--100 GeV) of 2.4e-10 phot cm^-2 s^-1 with photon index of 2.23 (8.2e10^41 ergs s^-1 at 77 Mpc) We also derive upper limits for the stacked LIRGs and ULIRGs. The gamma-ray luminosity of Arp~220 and the stacked upper limits agree with calorimetric predictions for dense star-forming galaxies. With the detection of Arp 220, we extend the gamma-ray--IR luminosity correlation to the high luminosity regime with log(L_[0.1-100 GeV]) = 1.25log(L_[8-1000]) + 26.7 as well as the gamma-ray--radio continuum luminosity correlation with log(L_[0.1-100 GeV]) = 1.22log(L_[1.4 GHz]) + 13.3. The current survey of Fermi-LAT is on the verge of detecting more LIRGs/ULIRGs in the local universe, and we expect even more detections with deeper Fermi-LAT observations or the next generation of gamma-ray detectors.
description: 14 single column pages, 4 figures, accepted by ApJL
Surface Direct Conversion of 511 keV Gamma Rays in Large-Area Laminated Multichannel-Plate Electron Multipliers
Creators: name: Domurat-Sousa, Kepler
name: Poe, Cameron
name: Frisch, Henry J.
name: Adams, Bernhard W.
name: Ertley, Camden
name: Sullivan, Neal
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We have used the TOPAS simulation framework to model the direct conversion of 511 keV gamma rays to electrons in a micro-channel plate (MCP) constructed from thin laminae of a heavy-metal-loaded dielectric such as lead-glass, patterned with micro-channels (LMCP). The laminae serve as the converter of the gamma ray to a primary electron within a depth from a channel-forming surface such that the electron penetrates the channel surface (`surface direct conversion'). The channels are coated with a secondary-emitting material to produce electron multiplication in the channels. The laminae are stacked on edge with the channels running from the top of the resulting `slab' to the bottom; after assembly the slab is metalized top and bottom to form the finished LMCP. The shape of the perimeter of a lamina determines the dimensions of the slab at the lamina location in the slab, allowing non-uniform cross-sections in slab thickness, width, and length. The slab also can be non-planar, allowing curved surfaces in both lateral dimensions. The laminar construction allows incorporating structural elements in the LMCP for modular assembly in large-area arrays. The channels can be patterned on the laminae surfaces with internal shapes and structure, texture, and coatings optimized for specific applications and performance. The channels can be non-uniform across the LMCP and need not be parallel in either transverse direction. Surface direct conversion of the gamma ray to an electron eliminates the common two-step conversion of the gamma ray into an optical photon in a scintillator followed by the conversion of the photon into an electron in a photodetector. The simulations predict an efficiency for conversion of 511 keV gamma rays of $\gtrapprox$ 30\% for a 2.54 cm-thick lead-glass LMCP. The elimination of the photocathode allows assembly at atmospheric pressure.
description: 13 pages, 10 figures, most recent version is of the accepted manuscript
Effective Field Theory of Dipolar Braiding Statistics in Two Dimensions
Creators: name: Oh, Yun-Tak
name: Kim, Jintae
name: Han, Jung Hoon
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A rank-2 toric code (R2TC) Hamiltonian in two dimensions can be constructed as a Higgsed descendant of rank-2 U(1) lattice gauge theory. As noted by the authors recently, [Y.-T. Oh, J. Kim, E.-G. Moon, and J. H. Han, Phys. Rev. B {\bf 105}, 045128] the quasiparticles in that model shows unusual braiding statistics that depends on the initial locations of the particles which participate in the braiding. We show that this new kind of statistical phase captures the total dipole moment of quasiparticles encompassed in the braiding, in contrast to the conventional anyonic braiding seeing the total charge. An Aharonov-Bohm interpretation of such {\it dipolar braiding statistics} is made in terms of emergent, rank-1 vector potentials that are built out of the underlying rank-2 gauge fields. Pertinent field theories of the quasiparticle dynamics in the R2TC are developed, and the accompanying conservation laws derived. A {\it dipolar BF theory} of the rank-2 gauge fields is constructed and shown to correctly capture the dipolar braiding statistics, in contrast to the conventional BF theory capturing the monopolar braiding statistics of anyons in the rank-1 toric code.
description: 12 pages, appendix, 4 figures
Recensión a Paolo Lobba y Triestino Mariniello (eds.), "Judicial Dialogue on Human Rights. The Practice of International Criminal Tribunals'", Brill, Leiden y Boston, 2017, 301 págs.
Creators: name: Pérez Caballero, Jesús
Publisher: name: Zenodo
Year: 2018
Subjects: reseña
derechos humanos
Derecho Penal Internacional
filosofía del Derecho
crímenes internacionales
jurisprudencia

description: En la primera lectura, Judicial Dialogue on Human Rights. The Practice of International Criminal Tribunals se muestra como el libro técnico que es, con capítulos casi canónicos para expertos en la teoría y la práctica de las relaciones entre tribunales supraestatales, sea de derechos humanos o penales internacionales. Riguroso, a veces árido, es otra manifestación clara del respeto de los autores a principios básicos comunes que regulan el ius puniendi, independientemente del nivel y ámbito donde se aplique. Por suerte, la relectura permite abrir otro flanco de análisis, el de otros debates donde lo jurídico es, sí, el hilo conductor, pero no agota la reflexión. Esta reseña parte de esos otros debates, ya que la síntesis de qué se dice en cada capítulo la han hecho mucho mejor los editores del libro, Paolo Lobba y Triestino Mariniello, en la introducción (pp. 1-10).
description: DOI (sobrevenido): 10.5944/rdpc.19.2018.24422
An Offset-Free Nonlinear MPC scheme for systems learned by Neural NARX models
Creators: name: Bonassi, Fabio
name: Xie, Jing
name: Farina, Marcello
name: Scattolini, Riccardo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Systems and Control (eess.SY)
subject: Machine Learning (cs.LG)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: This paper deals with the design of nonlinear MPC controllers that provide offset-free setpoint tracking for models described by Neural Nonlinear AutoRegressive eXogenous (NNARX) networks. The NNARX model is identified from input-output data collected from the plant, and can be given a state-space representation with known measurable states made by past input and output variables, so that a state observer is not required. In the training phase, the Incremental Input-to-State Stability (δISS) property can be forced when consistent with the behavior of the plant. The δISS property is then leveraged to augment the model with an explicit integral action on the output tracking error, which allows to achieve offset-free tracking capabilities to the designed control scheme. The proposed control architecture is numerically tested on a water heating system and the achieved results are compared to those scored by another popular offset-free MPC method, showing that the proposed scheme attains remarkable performances even in presence of disturbances acting on the plant.
description: {\copyright} 2022 IEEE. This manuscript is the extended version of an article appearing in the Proceedings of the 2022 IEEE 61st Conference on Decision and Control (CDC), July 12-15, 2022, Cancun, Mexico, pp. 2123-2128. DOI: 10.1109/CDC51059.2022.9992362
Impact of Pycnonuclear Fusion Uncertainties on the Cooling of Accreting Neutron Star Crusts
Creators: name: Jain, R.
name: Brown, E. F.
name: Schatz, H.
name: Afanasjev, A. V.
name: Beard, M.
name: Gasques, L. R.
name: Gupta, S. S.
name: Hitt, G. W.
name: Hix, W. R.
name: Lau, R.
name: Moller, P.
name: Ong, W. J.
name: Wiescher, M.
name: Xu, Y.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The observation of X-rays during quiescence from transiently accreting neutron stars provides unique clues about the nature of dense matter. This, however, requires extensive modeling of the crusts and matching the results to observations. The pycnonuclear fusion reaction rates implemented in these models are theoretically calculated by extending phenomenological expressions and have large uncertainties spanning many orders of magnitude. We present the first sensitivity studies of these pycnonuclear fusion reactions in realistic network calculations. We also couple the reaction network with the thermal evolution code dStar to further study their impact on the neutron star cooling curves in quiescence. Varying the pycnonuclear fusion reaction rates alters the depth at which nuclear heat is deposited although the total heating remains constant. The enhancement of the pycnonuclear fusion reaction rates leads to an overall shallower deposition of nuclear heat. The impurity factors are also altered depending on the type of ashes deposited on the crust. These total changes correspond to a variation of up to 9 eV in the modeled cooling curves. While this is not sufficient to explain the shallow heat source, it is comparable to the observational uncertainties and can still be important for modeling the neutron star crust.
description: AASTeX63, 11 pages with 9 figures
Electron Acceleration at a Coronal Shock Propagating Through a Large-scale Streamer-like Magnetic Field
Creators: name: Kong, Xiangliang
name: Chen, Yao
name: Guo, Fan
name: Feng, Shiwei
name: Du, Guohui
name: Li, Gang
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: With a test-particle simulation, we investigate the effect of large-scale coronal magnetic fields on electron acceleration at an outward-propagating coronal shock with a circular front. The coronal field is approximated by an analytical solution with a streamer-like magnetic field featured by partially open magnetic field and a current sheet at the equator atop the closed region. We show that the large-scale shock-field configuration, especially the relative curvature of the shock and the magnetic field line across which the shock is sweeping, plays an important role in the efficiency of electron acceleration. At low shock altitudes, when the shock curvature is larger than that of magnetic field lines, the electrons are mainly accelerated at the shock flanks; at higher altitudes, when the shock curvature is smaller, the electrons are mainly accelerated at the shock nose around the top of closed field lines. The above process reveals the shift of efficient electron acceleration region along the shock front during its propagation. It is also found that in general the electron acceleration at the shock flank is not so efficient as that at the top of closed field since at the top a collapsing magnetic trap can be formed. In addition, we find that the energy spectra of electrons is power-law like, first hardening then softening with the spectral index varying in a range of -3 to -6. Physical interpretations of the results and implications on the study of solar radio bursts are discussed.
description: accepted by ApJ
Near-field radiative heat transfer between irregularly shaped dielectric particles modeled with the discrete system Green's function method
Creators: name: Walter, Lindsay P.
name: Tervo, Eric J.
name: Francoeur, Mathieu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Near-field radiative heat transfer (NFRHT) between irregularly shaped dielectric particles made of SiO2 and morphology characterized by Gaussian random spheres is studied. Particles are modeled using the discrete system Green's function (DSGF) approach, which is a volume integral numerical method based on fluctuational electrodynamics. This method is applicable to finite, three-dimensional objects, and all system interactions are defined independent of thermal excitation by a generalized system Green's function. The DSGF method is deemed suitable to model NFRHT between irregularly shaped particles after verification against the analytical solution for chains of two and three SiO2 spheres. The NFRHT results reveal that geometric irregularity in particles leads to a reduction of the total conductance from that of comparable perfect spheres at vacuum separation distances smaller than the particle size, a regime in which NFRHT is a surface phenomenon. At vacuum separation distances larger than the particle size, NFRHT becomes a volumetric process, and the total conductance between irregularly shaped particles converges to that of comparable perfect spheres. Spectral analysis reveals, however, that particle irregularity leads to damping and broadening of resonances at all separation distances, thereby highlighting the importance of the DSGF method for spectral engineering in the near field. The reduced spectral coherence when particle size is larger than the vacuum separation distance is attributed to coupling of surface phonon-polaritons within the randomly generated, distorted particle features. For particle size smaller than the vacuum separation distance, resonance broadening and damping is linked with the multiple localized surface phonon modes supported by the composite spherical harmonic morphologies of the Gaussian random spheres.
description: 59 pages, 9 figures, 6 supplementary figures
Dirac leptogenesis via scatterings
Creators: name: Heeck, Julian
name: Heisig, Jan
name: Thapa, Anil
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Leptogenesis typically requires the introduction of heavy particles whose out-of-equilibrium decays are essential for generating a matter-antimatter asymmetry, according to one of Sakharov's conditions. We show that in Dirac leptogenesis, scatterings between the light degrees of freedom - Standard Model particles plus Dirac neutrinos - suffice to generate the asymmetry. Sakharov's conditions are satisfied because the right-handed neutrino partners are out of equilibrium. Consequently, heavy degrees of freedom never needed to be produced in the early universe, allowing for a reheating temperature below their mass scale. We solve the Boltzmann equations and discuss the viable parameter space together with observational signatures such as an increased number of effective neutrinos in the early universe as well as proton decay for some realizations.
description: Withdrawn due to critical error in calculation, see arXiv:2308.14767
title: Strategic UK CCS Storage Appraisal - WP5D - Captain X Site Storage Development Plan
Creators: name: Green, A.
name: D Gammer, D.
Publisher: name: ETI
Year: 2016
Subjects: subject: Carbon Capture and Storage
subject: FOSSIL FUELS: OIL, GAS and COAL (CO2 Capture and Storage)

description: Storage in the Captain Sandstone aquifer in UKCS quadrants 13 and 14 in the Central North Sea.3 well, single stage development of Captain X Site from an unmanned platform, supplied with CO2 from St. Fergus via an existing 78km 16” pipeline.Ambitious programme to Final Investment Decision in 2018 and first injection in 2022.Capital investment of £152 million (PV10, 2015), equating to £2.5 for each tonne stored.The store can contain 60Mt from the 20 year CO2 supply profile at 3Mt/y.There is good subsurface data but further seismic investigation is required to understand plume development and shape the development plan.
Exploring the potential of FCC-hh to search for particles from $B$ mesons
Creators: name: Boyarsky, Alexey
name: Mikulenko, Oleksii
name: Ovchynnikov, Maksym
name: Shchutska, Lesya
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The Future Circular Collider (FCC-hh) is a proposed successor of the Large Hadron Collider (LHC). FCC-hh would push both the energy and intensity frontiers of searches for new physics particles. In particular, due to higher energy and luminosity than at the LHC, at FCC-hh there would be produced around $\simeq\!30$ times larger amount of $B$ mesons and $\simeq 120$ times of $W$ bosons, which then may decay into feebly interacting particles. In this paper we demonstrate the potential of FCC-hh by studying its sensitivity to heavy neutral leptons (HNLs) with masses $m_{N}
description: Journal version
On the Performance of Mismatched Data Detection in Large MIMO Systems
Creators: name: Jeon, Charles
name: Maleki, Arian
name: Studer, Christoph
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We investigate the performance of mismatched data detection in large multiple-input multiple-output (MIMO) systems, where the prior distribution of the transmit signal used in the data detector differs from the true prior. To minimize the performance loss caused by this prior mismatch, we include a tuning stage into our recently-proposed large MIMO approximate message passing (LAMA) algorithm, which allows us to develop mismatched LAMA algorithms with optimal as well as sub-optimal tuning. We show that carefully-selected priors often enable simpler and computationally more efficient algorithms compared to LAMA with the true prior while achieving near-optimal performance. A performance analysis of our algorithms for a Gaussian prior and a uniform prior within a hypercube covering the QAM constellation recovers classical and recent results on linear and non-linear MIMO data detection, respectively.
description: Will be presented at the 2016 IEEE International Symposium on Information Theory
Bienert, David C. / Jeska, Joachim / Witulski, Thomas (Hrsg.), Paulus und die antike Welt
Creators: name: Stenschke, Christoph W.
Publisher: name: Jahrbuch für evangelikale Theologie
Year: 2025

description: 1823350798
description: Jahrbuch für evangelikale Theologie, V. 23 (2009): Jahrbuch für evangelikale Theologie, Band 23
Sharp moderate and large deviations for sample quantiles
Creators: name: Fan, Xiequan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 60E15, 60F10, 62G30

description: In this article, we discuss the sharp moderate and large deviations between the quantiles of population and the quantiles of samples. Cramér type moderate deviations and Bahadur-Rao type large deviations are established with some mild conditions. The results refine the moderate and large deviation principles of Xu and Miao [Filomat 2011; 25(2): 197-206].
description: 10 pages
Computationally efficient neural network classifiers for next generation closed loop neuromodulation therapy -- a case study in epilepsy
Creators: name: Kavoosi, Ali
name: Toth, Robert
name: Benjaber, Moaad
name: Zamora, Mayela
name: Valentin, Antonio
name: Sharott, Andrew
name: Denison, Timothy
Publisher: name: arXiv
Year: 2022
Subjects: subject: Signal Processing (eess.SP)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Biological sciences

description: This work explores the potential utility of neural network classifiers for real-time classification of field-potential based biomarkers in next-generation responsive neuromodulation systems. Compared to classical filter-based classifiers, neural networks offer an ease of patient-specific parameter tuning, promising to reduce the burden of programming on clinicians. The paper explores a compact, feed-forward neural network architecture of only dozens of units for seizure-state classification in refractory epilepsy. The proposed classifier offers comparable accuracy to filter classifiers on clinician-labelled data, while reducing detection latency. As a trade-off to classical methods, the paper focuses on keeping the complexity of the architecture minimal, to accommodate the on-board computational constraints of implantable pulse generator systems.
description: 4 pages, 5 figures
Photometry and Polarimetry of 2010 XC$_{15}$: Observational Confirmation of E-type Near-Earth Asteroid Pair
Creators: name: Beniyama, Jin
name: Sako, Shigeyuki
name: Ohtsuka, Katsuhito
name: Sekiguchi, Tomohiko
name: Ishiguro, Masateru
name: Kuroda, Daisuke
name: Urakawa, Seitaro
name: Yoshida, Fumi
name: Takumi, Asami
name: Maeda, Natsuho
name: Takahashi, Jun
name: Takagi, Seiko
name: Saito, Hiroaki
name: Nakaoka, Tatsuya
name: Saito, Tomoki
name: Ohshima, Tomohito
name: Imazawa, Ryo
name: Kagitani, Masato
name: Takita, Satoshi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Asteroid systems such as binaries and pairs are indicative of physical properties and dynamical histories of the Small Solar System Bodies. Although numerous observational and theoretical studies have been carried out, the formation mechanism of asteroid pairs is still unclear, especially for near-Earth asteroid (NEA) pairs. We conducted a series of optical photometric and polarimetric observations of a small NEA 2010 XC$_{15}$ in 2022 December to investigate its surface properties. The rotation period of 2010 XC$_{15}$ is possibly a few to several dozen hours and color indices of 2010 XC$_{15}$ are derived as $g-r=0.435\pm0.008$, $r-i=0.158\pm0.017$, and $r-z=0.186\pm0.009$ in the Pan-STARRS system. The linear polarization degrees of 2010 XC$_{15}$ are a few percent at the phase angle range of 58$^{\circ}$ to 114$^{\circ}$. We found that 2010 XC$_{15}$ is a rare E-type NEA on the basis of its photometric and polarimetric properties. Taking the similarity of not only physical properties but also dynamical integrals and the rarity of E-type NEAs into account, we suppose that 2010 XC$_{15}$ and 1998 WT$_{24}$ are of common origin (i.e., asteroid pair). These two NEAs are the sixth NEA pair and first E-type NEA pair ever confirmed, possibly formed by rotational fission. We conjecture that the parent body of 2010 XC$_{15}$ and 1998 WT$_{24}$ was transported from the main-belt through the $ν_6$ resonance or Hungaria region.
description: This article was published in ApJ. See https://iopscience.iop.org/article/10.3847/1538-4357/ace88f
Quantum Size Effects in the Terahertz Nonlinear Response of Metallic Armchair Graphene Nanoribbons
Creators: name: Wang, Yichao
name: Andersen, David R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We use time dependent perturbation theory to study quantum size effects on the terahertz nonlinear response of metallic graphene armchair nanoribbons of finite length under an applied electric field. Our work shows that quantization due to the finite length of the nanoribbon, the applied field profile, and the broadening of the graphene spectrum all play a significant role in the resulting nonlinear conductances. In certain cases, these effects can significantly enhance the nonlinearity over that for infinitely-long metallic armchair graphene nanoribbon.
description: 8 pages, 4 figures
Designing High-Tc Superconductors with BCS-inspired Screening, Density Functional Theory and Deep-learning
Creators: name: Choudhary, Kamal
name: Garrity, Kevin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We develop a multi-step workflow for the discovery of conventional superconductors, starting with a Bardeen Cooper Schrieffer inspired pre-screening of 1736 materials with high Debye temperature and electronic density of states. Next, we perform electron-phonon coupling calculations for 1058 of them to establish a large and systematic database of BCS superconducting properties. Using the McMillan-Allen-Dynes formula, we identify 105 dynamically stable materials with transition temperatures, Tc>5 K. Additionally, we analyze trends in our dataset and individual materials including MoN, VC, VTe, KB6, Ru3NbC, V3Pt, ScN, LaN2, RuO2, and TaC. We demonstrate that deep-learning(DL) models can predict superconductor properties faster than direct first principles computations. Notably, we find that by predicting the Eliashberg function as an intermediate quantity, we can improve model performance versus a direct DL prediction of Tc. We apply the trained models on the crystallographic open database and pre-screen candidates for further DFT calculations.
Correction methods for finite-acceptance effects in two-particle correlation analyses
Creators: name: Oh, Saehanseul
name: Schuster, Tim
name: Morsch, Andreas
name: Loizides, Constantin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Two-particle angular correlations have been widely used as a tool to explore particle production mechanisms in heavy-ion collisions. The mixed-event technique is generally used as a standard method to correct for finite-acceptance effects. We demonstrate that event mixing only provides an approximate acceptance correction, and propose new methods for finite-acceptance corrections. Starting from discussions about 2-dimensional correction procedures, new methods are derived for specific assumptions on the properties of the signal, such as uniform signal distribution or $δ$-function-like trigger particle distribution, and suitable for two-particle correlation analyses from particles at mid-rapidity and jet-hadron or high $p_{\text{T}}$-triggered hadron-hadron correlations. Per-trigger associated particle yields from the mixed-event method and the new methods are compared through Monte Carlo simulations containing well-defined correlation signals. Significant differences are observed at large pseudorapidity differences in general and especially for asymmetric particle distribution like that produced in proton--nucleus collisions. The applicability and validity of the new methods are discussed in detail.
description: 26 pages, 7 figures, version accepted by EPJ Plus
Correlation between the rheology of 2D-inks precursors and the droplet size generated from a capillary nozzle in dripping regime
Creators: name: Rijo, Pedro C.
name: Cremonezzi, Josué M. O.
name: Andrade, Ricardo J. E.
name: Galindo-Rosales, Francisco J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: This study provides a complete rheological characterization of 2D nanomaterial dispersions, employed as 2D-inks precursors in printed electronics. Three different 2D nanomaterials (molybdenum disulfide (MoS2), graphene, and hexagonal boron nitride(hBN)) were dispersed in a Newtonian fluid (toluene) and a viscoelastic fluid (toluene + ethyl cellulose) with different polymer concentrations. The presence of nanoparticles does not change the shear rheology of the carrier fluid. Regarding the extensional rheology, the results showed that the pinch-off phenomenon is present in all Toluene suspensions; however, the presence of the ethyl cellulose introduces elasticity in the system, even leading to the formation of beads-on-a-string, and the relaxation times of the suspensions depends on the kind of nanoparticles present in the fluid. As controlling the droplet size when dispensing 2D-inks is of paramount importance for printed electronics, as well as for many other applications, here it is presented a correlation between the rheological properties of these 2D-inks precursors and their droplet size when generated from a capillary nozzle in dripping regime.
Local Matrix Homotopies and Soft Tori
Creators: name: Loring, Terry A.
name: Vides, Fredy
Publisher: name: arXiv
Year: 2016
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L85, 22D25 (primary), 20F65, 65J22 (secondary)

description: We present solutions to local connectivity problems in matrix representations of the form $C([-1,1]^{N}) \to A_{n,\varepsilon} \leftarrow C_{\varepsilon}(\mathbb{T}^{2})$ for any $\varepsilon\in[0,2]$ and any integer $n\geq 1$, where $A_{n,\varepsilon}\subseteq M_n$ and where $C_{\varepsilon}(\mathbb{T}^{2})$ denotes the {\bf Soft Torus}. We solve the connectivity problems by introducing the so called toroidal matrix links, which can be interpreted as normal contractive matrix analogies of free homotopies in differential algebraic topology. In order to deal with the locality constraints, we have combined some techniques introduced in this document with some techniques from matrix geometry, combinatorial optimization, classification and representation theory of C$^*$-algebras.
The Matariki Project: 3-D Change Detection with Satellite Photogrammetric Mapping. NZGRC 2022.
Creators: name: Sirguey, Pascal
name: Miller, Aubrey
name: Carle, Ellorine
name: Cox, Simon
name: Redpath, Todd
name: Cullen, Nicolas J
Publisher: name: figshare
Year: 2022
Subjects: subject: 90903 Geospatial Information Systems
subject: FOS: Environmental engineering

description: The Matariki project aims to transform environmental monitoring by quantifying environmental resources with high-resolution, automated, satellite photogrammetric mapping (SPM) of landscape change. Digital elevation models (DEMs) are an invaluable tool for studying a variety of landscape processes. However, there is an apparent gap between coarse resolution, but global coverage DEMs like SRTM and ASTER, and fine-scale, but ad-hoc and costly DEMs derived from aerial/UAV LiDAR and photogrammetry. Quantifying landscape change requires capturing DEMs repeatedly over time, and in all of these cases, repeat coverage is not necessarily guaranteed. A new generation of satellite constellations including Airbus/Pléiades, Maxar/WorldView, and Planet/SkySat are now capturing stereo-imagery across the globe at metre- to decimetre-scale resolutions. Combining traditional photogrammetry with modern computer vision techniques enables the construction of repeatable sub-metre accuracy DEMs from stereo-images at relatively low expense. The Matariki project has developed, tested and applied a methodology to resolve changes in surface elevation at various magnitudes. Several recent applications across the Main Divide in New Zealand’s Southern Alps/Kā Tiritiri o te Moana exemplify the benefit and performance of mapping landscape changes from space, including:
 1. developing near-complete inventories of creeping and rapid landslides throughout the Aoraki-Mt Cook National Park, based on decadal-scale 3D change detection;
 2. providing rapid response and quantifying 3-D changes within 48 hours of receiving new satellite imagery following major landslide activity on the Grand Plateau and Hooker Valley;
 3. characterising glacier changes and landslide dynamics in Fox Glacier/Te Moeka o Tūawe Valley;
 4. producing the first high resolution map of snow depth in the Jollie River catchment of Aoraki/Mt Cook National Park, in turn providing important new insights for snow modelling in New Zealand.
Impact of the phonon environment on the nonlinear quantum-dot-cavity QED. I. Path-integral approach
Creators: name: Sirkina, L. S.
name: Muljarov, E. A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate a strong influence of the phonon environment on the coherent dynamics of the quantum dot (QD)-cavity system in the quantum strong coupling regime. This regime is implemented in the nonlinear QD-cavity QED and can be reliably measured by heterodyne spectral interferometry. We present a semi-analytic asymptotically exact path integral-based approach to the nonlinear optical response of this system, which includes two key ingredients: Trotter's decomposition and linked-cluster expansion. Applied to the four-wave-mixing optical polarization, this approach provides access to different excitation and measurement channels, as well as to higher-order optical nonlinearities and quantum correlators. Furthermore, it allows us to extract useful analytic approximations and analyze the nonlinear optical response in terms of quantum transitions between phonon-dressed states of the anharmonic Jaynes-Cummings (JC) ladder. Being well described by these approximations at low temperatures and small exciton-cavity coupling, the exact solution deviates from them for stronger couplings and higher temperatures, demonstrating remarkable non-Markovian effects, spectral asymmetry, and strong phonon renormalization of the JC ladder.
Uncertainty estimation of pedestrian future trajectory using Bayesian approximation
Creators: name: Nayak, Anshul
name: Eskandarian, Azim
name: Doerzaph, Zachary
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Past research on pedestrian trajectory forecasting mainly focused on deterministic predictions which provide only point estimates of future states. These future estimates can help an autonomous vehicle plan its trajectory and avoid collision. However, under dynamic traffic scenarios, planning based on deterministic predictions is not trustworthy. Rather, estimating the uncertainty associated with the predicted states with a certain level of confidence can lead to robust path planning. Hence, the authors propose to quantify this uncertainty during forecasting using stochastic approximation which deterministic approaches fail to capture. The current method is simple and applies Bayesian approximation during inference to standard neural network architectures for estimating uncertainty. The authors compared the predictions between the probabilistic neural network (NN) models with the standard deterministic models. The results indicate that the mean predicted path of probabilistic models was closer to the ground truth when compared with the deterministic prediction. Further, the effect of stochastic dropout of weights and long-term prediction on future state uncertainty has been studied. It was found that the probabilistic models produced better performance metrics like average displacement error (ADE) and final displacement error (FDE). Finally, the study has been extended to multiple datasets providing a comprehensive comparison for each model.
description: 12 pages, 17 figures, 1 table