cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Continuity of isomorphisms applied to rigidity problems of entropy spectra
Creators: name: Nakagawa, Katsukuni
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: For a fixed topological Markov shift, we consider measure-preserving dynamical systems of Gibbs measures for 2-locally constant functions on the shift. We also consider isomorphisms between two such systems. We study the set of all 2-locally constant functions $f$ on the shift such that all those isomorphisms defined on the system associated with $f$ are induced from automorphisms of the shift. We prove that this set contains a full-measure open set of the space of all 2-locally constant functions on the shift. We apply this result to rigidity problems of entropy spectra and show that the strong non-rigidity occurs if and only if so does the weak non-rigidity.
A New Identification Framework For Off-Line Computation of Moving-Horizon Observers
Creators: name: Alamir, Mazen
Publisher: name: arXiv
Year: 2012
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, a new nonlinear identification framework is proposed to address the issue of off-line computation of moving-horizon observer estimate. The proposed structure merges the advantages of nonlinear approximators with the efficient computation of constrained quadratic programming problems. A bound on the estimation error is proposed and the efficiency of the resulting scheme is illustrated using two state estimation examples.
description: To Appear in IEEE Transactions on Automatic Control (This version is the second revision)
Silicon isotopes in an EMIC's ocean: sensitivity to runoff, iron supply and climate
Creators: name: Dietze, Heiner
Publisher: name: Zenodo
Year: 2020
Subjects: modeling, earth system model of intermediate complexity, silicon isotopes

description: This package contains all that is needed to reproduce the results described in https://www.essoar.org/doi/10.1002/essoar.10503005.1 and submitted to Paleoceanography and Paleoclimatology. If you run into problems please contact heiner.dietze@ifg.uni-kiel.de
Probabilistic Semantic Data Association for Collaborative Human-Robot Sensing
Creators: name: Wakayama, Shohei
name: Ahmed, Nisar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Humans cannot always be treated as oracles for collaborative sensing. Robots thus need to maintain beliefs over unknown world states when receiving semantic data from humans, as well as account for possible discrepancies between human-provided data and these beliefs. To this end, this paper introduces the problem of semantic data association (SDA) in relation to conventional data association problems for sensor fusion. It then develops a novel probabilistic semantic data association (PSDA) algorithm to rigorously address SDA in general settings, unlike previous work on semantic data fusion which developed heuristic techniques for specific settings. PSDA is further incorporated into a recursive hybrid Bayesian data fusion scheme which uses Gaussian mixture priors for object states and softmax functions for semantic human sensor data likelihoods. Simulations of a multi-object search task show that PSDA enables robust collaborative state estimation under a wide range of conditions where semantic human sensor data can be erroneous or contain significant reference ambiguities.
description: 15 pages, 14 figures
The matrix infrared spectra of fulvenone (C5H4=C=O) and its thermal decomposition products
Creators: name: Genossar, N.
name: Ormond, T. K.
name: Baraban, J. H.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: The matrix IR absorbance spectra of fulvenone, a reactive intermediate in the pyrolysis of lignin, and three of its thermal dissociation products were recorded and analysed using a flash pyrolysis microreactor and ab initio calculations. The predicted spectra of fulvenone, penta-1,2-diene-4-yne, penta-1,3-diyne, and n-C5H3⋅ matched well with the experimentally observed transitions, and are in good agreement with existing literature data. The cyclic C5H4 isomer, cyclopentadienylidene, could not be conclusively identified, suggesting that fulvenone is the last relatively stable cyclic species in this pyrolytic chain of reactions. The evolution of the IR data with increasing extent of the pyrolysis shows a gradual trend of dissociation of complex organic molecules towards highly unsaturated hydrocarbons. The isomer-specific analysis by IR assignments of these pyrolytic pathways helps pave the way for further study of biomass thermal reactions, towards possible uses of biomass as a renewable source of energy.
Impact of current paths on measurement of tunneling magnetoresistance and spin torque critical current densities in GaMnAs-based magnetic tunnel junctions
Creators: name: Hamida, Aymen Ben
name: Bergmann, Florian
name: Pierz, Klaus
name: Schumacher, Hans Werner
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: GaMnAs-based magnetic tunnel junction (MTJ) devices are characterized by in-plane and perpendicular-toplane magnetotransport at low temperatures. Perpendicular-to-plane transport reveals the typical tunneling magnetotransport (TMR) signal. Interestingly, a similar TMR signature is observed in the in-plane transport signal. Here, low-ohmic shunting of the MTJ by the top contact results in significant perpendicular-to-plane current paths. This effect allows the determination of TMR ratios of MTJs based on a simplified in-plane measurement. However, the same effect can lead to an inaccurate determination of resistance area products and spin torque critical current densities from perpendicular-to-plane magnetotransport experiments on MTJ pillar structures.
description: 5 pages, 5 figures
Non-linear Boson Sampling
Creators: name: Spagnolo, Nicolò
name: Brod, Daniel J.
name: Galvão, Ernesto F.
name: Sciarrino, Fabio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Boson Sampling is a task that is conjectured to be computationally hard for a classical computer, but which can be efficiently solved by linear-optical interferometers with Fock state inputs. Significant advances have been reported in the last few years, with demonstrations of small- and medium-scale devices, as well as implementations of variants such as Gaussian Boson Sampling. Besides the relevance of this class of computational models in the quest for unambiguous experimental demonstrations of quantum advantage, recent results have also proposed first applications for hybrid quantum computing. Here, we introduce the adoption of non-linear photon-photon interactions in the Boson Sampling framework, and analyze the enhancement in complexity via an explicit linear-optical simulation scheme. By extending the computational expressivity of Boson Sampling, the introduction of non-linearities promises to disclose novel functionalities for this class of quantum devices. Hence, our results are expected to lead to new applications of near-term, restricted photonic quantum computers.
description: 7+15 pages, 3+11 figures
Optical response of Higgs mode in superconductors at clean limit
Creators: name: Yang, F.
name: Wu, M. W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The phenomenological Ginzburg-Landau theory and the charge conservation directly lead to the finite Higgs-mode generation and vanishing charge-density fluctuation in the second-order optical response of superconductors at clean limit. Nevertheless, recent microscopic theoretical studies of the second-order optical response, apart from the one through the gauge-invariant kinetic equation [Yang and Wu, Phys. Rev. B {\bf 100}, 104513 (2019)], have derived a vanishing Higgs-mode generation but finite charge-density fluctuation at clean limit. We resolve this controversy by re-examining the previous derivations with the vector potential alone within the path-integral and Eilenberger-equation approaches, and show that both previous derivations contain mathematical flaws. After fixing these flaws, a finite Higgs-mode generation through the drive effect of vector potential is derived at clean limit, exactly recovering the previous result from the gauge-invariant kinetic equation as well as Ginzburg-Landau theory. By further extending the path-integral approach to include electromagnetic effects from the scalar potential and phase mode, in the second-order response, a finite contribution from the drive effect of scalar potential to the Higgs-mode generation at clean limit as well as the vanishing charge-density fluctuation are derived, also recovering the results from the gauge-invariant kinetic equation. Particularly, we show that the phase mode is excited in the second-order response, and exactly cancels the previously reported unphysical excitation of the charge-density fluctuation, guaranteeing the charge conservation.
description: 18 pages
Professional support of Ca' Foscari University of Venice to Marie Skłodowska-Curie Postdoctoral Fellowships
Creators: name: Giacometti, Fiorella
Publisher: name: Zenodo
Year: 2023

description: Predstavitev v okviru Srečanja projektnih konzorcijev izbranih na Javnem razpisu »Aktivnosti krepitve projektnih pisarn JRO« v okviru NOO z izmenjavo dobrih praks, ki ga je 13. 06. 2023 organizirala Univerza v Ljubljani.
Interfacial thermal conductance between TiO2 nanoparticle and water: A molecular dynamics study
Creators: name: Roodbari, Mahdi
name: Abbasi, Mohsen
name: Arabha, Saeed
name: Gharedaghi, Ayla
name: Rajabpour, Ali
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The interfacial thermal conductance (Kapitza conductance) between a TiO2 nanoparticle and water is investigated using transient non-equilibrium molecular dynamics. It is found that Kapitza conductance of TiO2 nanoparticles is one order of magnitude greater than other conventional nanoparticles such as gold, silver, silicon, platinum and also carbon nanotubes and graphene flakes. This difference can be explained by comparing the contribution of electrostatic interactions between the partially charged titanium and oxygen atoms and water atoms to the van der Waals interactions, which increases the cooling time by about 10 times. The effects of diameter and temperature of nanoparticle, surface wettability on the interfacial thermal conductance are also investigated. The results showed that by increasing the diameter of the nanoparticle from 4 to 9 nm, Kapitza conductance decreased slightly. Also, increasing the temperature of the heated nanoparticle from 400 K to 600 K led to thermal conductance enhancement. It has been found that increasing the coupling strength of Lennard-Jones (LJ) potential from 0.5 to 4 caused the increment of the Kapitza conductance about 20%. It is also shown that a continuum model which its input is provided by molecular dynamics can be a suitable approximation to describe the thermal relaxation of a nanoparticle in a liquid medium.
Optomechanical coupling between a moving dielectric sphere and radiation fields: a Lagrangian-Hamiltonian formalism
Creators: name: Cheung, H. K.
name: Law, C. K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a Lagrangian-Hamiltonian formalism of a moving dielectric sphere interacting with radiation fields. By including the interaction up to the first order in the speed of the sphere, we derive the Hamiltonian and perform quantization of both the field and the mechanical motion of the sphere. In particular, we show how independent degrees of freedom can be consistently identified under the generalized radiation gauge via instantaneous mode projection. Our Hamiltonian indicates the form of coupling due to velocity-dependent interactions beyond adiabatic approximation. In addition, the Hamiltonian predicts that a geometrical quantum phase can be gained by the sphere moving in a light field.
Spectral enclosures and stability for non-self-adjoint discrete Schroedinger operators on the half-line
Creators: name: Krejcirik, David
name: Laptev, Ari
name: Stampach, Frantisek
Publisher: name: arXiv
Year: 2021
Subjects: subject: Spectral Theory (math.SP)
subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We make a spectral analysis of discrete Schroedinger operators on the half-line, subject to complex Robin-type boundary couplings and complex-valued potentials. First, optimal spectral enclosures are obtained for summable potentials. Second, general smallness conditions on the potentials guaranteeing a spectral stability are established. Third, a general identity which allows to generate optimal discrete Hardy inequalities for the discrete Dirichlet Laplacian on the half-line is proved.
description: 19 pages, 5 figures
Generalized parton distributions from meson leptoproduction
Creators: name: Kroll, P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Generalized parton distributions (GPDs) extracted from exclusive meson leptoproduction within the handbag approach are briefly reviewed. Only the GPD E is discussed in some detail. Applications of these GPDs to virtual Compton scattering (DVCS) and to Ji's sum rule are also presented.
description: 8 pages, 4 figures, talk presented at SPIN12, JINR, Dubna, September 17 - 22, 2012
Substituted hydrocarbon: a CCSD(T) and local vibrational mode investigation
Creators: name: Delgado, Alexis Antoinette Ann
name: Sethio, Daniel
name: Matthews, Devin
name: Oliveira, Vytor
name: Kraka, Elfi
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Hematology

description: Substituent effects on the carbon–carbon bonds of hydrocarbons have been a topic of interest within the past seven decades as resultant information would enable one to tune the activity of CC bonds. However, current assessments of the C≡C, C=C, and C−C bond strength of acetylene, ethylene, and ethane as well as their derivatives rely on indirect measures such as bond length and bond dissociation enthalpy. In this work, we introduce a quantitative measure of the intrinsic strength of C≡C, C=C, and C−C bonds for a set of 40 hydrocarbon systems consisting of 3 parent structures, 36 hydrocarbon derivatives involving CF3, CH3, CHO, F, NH2, or OH groups, and a conjugated system, based on vibrational spectroscopy. Local mode force constants ka(CC) were computed at the CCSD(T)/cc-pVTZ level of theory for systems 1–32 and 34–40 and CCSD(T)/cc-pVDZ for 33. From ka(CC), we derived related bond strength orders BSO n(CC) in order to provide quantitative measures of intrinsic bond strength. Topological electron density and natural population analyses were carried out as to analyze the nature of these bonds and complement bond strength measures. For substituted hydrocarbon systems, we found the strengthening/weakening of the CC bonds occurs as the covalent nature of the bond increases/decreases by means of varying charge delocalizations. Our findings provide new guidelines for desirably modulating C≡C, C=C, and C−C bond strength and for the design of prospective pathways for bond cleavage reactions.
Invariant formulation of the Functional Renormalisation Group method for $U(n)\times U(n)$ symmetric matrix models
Creators: name: Patkós, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The Local Potential Approximation (LPA) to the Wetterich-equation is formulated explicitly in terms of operators, which are invariant under the $U(n)\times U(n)$ symmetry group. Complete formulas are presented for the two-flavor ($U(2)\times U(2)$) case. The same approach leads to a unique natural truncation of the functional driving the renormalisation flow of the potential of the three-flavor case ($U(3)\times U(3)$). The procedure applied to the $SU(3)\times SU(3)$ symmetric theory, results in an equation, which potentially allows an RG-investigation of the effect of the 't Hooft term representing the $U_A(1)$ anomaly, disentangled from the other operators.
description: to appear in Mod. Phys. Lett. A
Tailored neural networks for learning optimal value functions in MPC
Creators: name: Teichrib, Dieter
name: Darup, Moritz Schulze
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences
subject: I.2.6

description: Learning-based predictive control is a promising alternative to optimization-based MPC. However, efficiently learning the optimal control policy, the optimal value function, or the Q-function requires suitable function approximators. Often, artificial neural networks (ANN) are considered but choosing a suitable topology is also non-trivial. Against this background, it has recently been shown that tailored ANN allow, in principle, to exactly describe the optimal control policy in linear MPC by exploiting its piecewise affine structure. In this paper, we provide a similar result for representing the optimal value function and the Q-function that are both known to be piecewise quadratic for linear MPC.
description: 7 pages, 2 figures, 1 table
The Surface Tension of Quark Matter in a Geometrical Approach
Creators: name: Pinto, Marcus B.
name: Koch, Volker
name: Randrup, Jorgen
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Other Condensed Matter (cond-mat.other)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The surface tension of quark matter plays a crucial role for the possibility of quark matter nucleation during the formation of compact stellar objects, because it determines the nucleation rate and the associated critical size. However, this quantity is not well known and the theoretical estimates fall within a wide range, $γ_0 \approx 5-300 MeV/fm^2$. We show here that once the equation of state is available one may use a geometrical approach to obtain a numerical value for the surface tension that is consistent with the model approximations adopted. We illustrate this method within the two-flavor linear σmodel and the Nambu--Jona-Lasinio model with two and three flavors. Treating these models in the mean-field approximation, we find $γ_0 \approx 7-30 MeV/fm^2$. Such a relatively small surface tension would favor the formation of quark stars and may thus have significant astrophysical implications. We also investigate how the surface tension decreases towards zero as the temperature is raised from zero to its critical value.
Приспособление для формовки выводов ИМС в планарном корпусе
Creators: name: Любимов В.В., Бердышев Е.А.
Publisher: name: Zenodo
Year: 1986
Subjects: Интегральные микросхемы (ИМС), технология установки ИМС, формовка выводов ИМС

description: В работе (в предложении) дано описание конструкции оригинального устройства для подготовки и формования выводов интегральных микросхем (ИМС) выполненных в планарном корпусе. Устройство позволяет проводить подготовку ИМС в корпусах различных размеров и с различным количеством выводов к процессу их установки и пайки на печатные платы. На данное рационализаторское предложение получено официальное Удостоверение зарегистрированное в Патентном отделе ИЗМИРАН СССР 28.02.1986 г. под №12/292.
An improved upper bound for the argument of the Riemann zeta-function on the critical line II
Creators: name: Trudgian, T. S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11M06, 11M26

description: This paper improves the bound on $|S(T)|$. The main result is to show that $|S(T)|\leq 0.111\log T + 0.275\log\log T + 2.450$, which is valid for all $T\geq e$.
description: 10 pages, two tables: this is the second version of this article in which I have made some minor alterations and corrections
On sketching approximations for symmetric Boolean CSPs
Creators: name: Boyland, Joanna
name: Hwang, Michael
name: Prasad, Tarun
name: Singer, Noah
name: Velusamy, Santhoshini
Publisher: name: arXiv
Year: 2021
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Computational Complexity (cs.CC)
subject: FOS: Computer and information sciences

description: A Boolean maximum constraint satisfaction problem, Max-CSP($f$), is specified by a predicate $f:\{-1,1\}^k\to\{0,1\}$. An $n$-variable instance of Max-CSP($f$) consists of a list of constraints, each of which applies $f$ to $k$ distinct literals drawn from the $n$ variables. For $k=2$, Chou, Golovnev, and Velusamy [CGV20, FOCS 2020] obtained explicit ratios characterizing the $\sqrt n$-space streaming approximability of every predicate. For $k \geq 3$, Chou, Golovnev, Sudan, and Velusamy [CGSV21, arXiv:2102.12351] proved a general dichotomy theorem for $\sqrt n$-space sketching algorithms: For every $f$, there exists $α(f)\in (0,1]$ such that for every $ε>0$, Max-CSP($f$) is $(α(f)-ε)$-approximable by an $O(\log n)$-space linear sketching algorithm, but $(α(f)+ε)$-approximation sketching algorithms require $Ω(\sqrt{n})$ space. In this work, we give closed-form expressions for the sketching approximation ratios of multiple families of symmetric Boolean functions. Letting $α'_k = 2^{-(k-1)} (1-k^{-2})^{(k-1)/2}$, we show that for odd $k \geq 3$, $α(k$AND$) = α'_k$, and for even $k \geq 2$, $α(k$AND$) = 2α'_{k+1}$. We also resolve the ratio for the "at-least-$(k-1)$-$1$'s" function for all even $k$; the "exactly-$\frac{k+1}2$-$1$'s" function for odd $k \in \{3,\ldots,51\}$; and fifteen other functions. We stress here that for general $f$, according to [CGSV21], closed-form expressions for $α(f)$ need not have existed a priori. Separately, for all threshold functions, we give optimal "bias-based" approximation algorithms generalizing [CGV20] while simplifying [CGSV21]. Finally, we investigate the $\sqrt n$-space streaming lower bounds in [CGSV21], and show that they are incomplete for $3$AND.
description: 27 pages; same results but significant changes in presentation
Overlapping clustering based on kernel similarity metric
Creators: name: N'Cir, Chiheb-Eddine Ben
name: Essoussi, Nadia
name: Bertrand, Patrice
Publisher: name: arXiv
Year: 2012
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Producing overlapping schemes is a major issue in clustering. Recent proposed overlapping methods relies on the search of an optimal covering and are based on different metrics, such as Euclidean distance and I-Divergence, used to measure closeness between observations. In this paper, we propose the use of another measure for overlapping clustering based on a kernel similarity metric .We also estimate the number of overlapped clusters using the Gram matrix. Experiments on both Iris and EachMovie datasets show the correctness of the estimation of number of clusters and show that measure based on kernel similarity metric improves the precision, recall and f-measure in overlapping clustering.
description: Second Meeting on Statistics and Data Mining 2010
Universal Casimir interaction between two dielectric spheres in salted water
Creators: name: Schoger, Tanja
name: Spreng, Benjamin
name: Ingold, Gert-Ludwig
name: Neto, Paulo A. Maia
name: Reynaud, Serge
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study the Casimir interaction between two dielectric spheres immersed in a salted solution at distances larger than the Debye screening length. The long distance behavior is dominated by the non-screened interaction due to low-frequency transverse magnetic thermal fluctuations. It shows universality properties in its dependence on geometric dimensions and independence of dielectric functions of the particles, with these properties related to approximate conformal invariance.
description: 5 pages, 4 figures
Factorization of numbers with Gauss sums: III. Algorithms with Entanglement
Creators: name: Wölk, S.
name: Schleich, W. P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose two algorithms to factor numbers using Gauss sums and entanglement: (i) in a Shor-like algorithm we encode the standard Gauss sum in one of two entangled states and (ii) in an interference algorithm we create a superposition of Gauss sums in the probability amplitudes of two entangled states.These schemes are rather efficient provided that there exists a fast algorithm that can detect a period of a function hidden in its zeros.
description: 29 pages, 13 figures
MICROSCOPE: systematic errors
Creators: name: Rodrigues, Manuel
name: Touboul1, Pierre
name: Metris, Gilles
name: Robert, Alain
name: Dhuicque, Oceane
name: Berge, Joel
name: Andre, Yves
name: Boulanger, Damien
name: Chhun, Ratana
name: Christophe, Bruno
name: Cipolla, Valerio
name: Danto, Pascale
name: Foulon, Bernard
name: Guidotti, Pierre-Yves
name: Hardy, Emilie
name: Huynh, Phuong-Anh
name: Lebat, Vincent
name: Liorzou, Francoise
name: Pouilloux, Benjamin
name: Prieur, Pascal
name: Reynaud, Serge
name: Torresi, Patrizia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Applied Physics (physics.app-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The MICROSCOPE mission aims to test the Weak Equivalence Principle (WEP) in orbit with an unprecedented precision of 10$^{-15}$ on the Eötvös parameter thanks to electrostatic accelerometers on board a drag-free micro-satellite. The precision of the test is determined by statistical errors, due to the environment and instrument noises, and by systematic errors to which this paper is devoted. Systematic error sources can be divided into three categories: external perturbations, such as the residual atmospheric drag or the gravity gradient at the satellite altitude, perturbations linked to the satellite design, such as thermal or magnetic perturbations, and perturbations from the instrument internal sources. Each systematic error is evaluated or bounded in order to set a reliable upper bound on the WEP parameter estimation uncertainty.
description: To be released in CQG MICROSCOPE Special Edition
Inhalt
Creators: name: Redaktion, Die
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 70, Nr. 1 (1992)
Logical blocks for fault-tolerant topological quantum computation
Creators: name: Bombin, Hector
name: Dawson, Chris
name: Mishmash, Ryan V.
name: Nickerson, Naomi
name: Pastawski, Fernando
name: Roberts, Sam
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Logical gates constitute the building blocks of fault-tolerant quantum computation. While quantum error-corrected memories have been extensively studied in the literature, explicit constructions and detailed analyses of thresholds and resource overheads of universal logical gate sets have so far been limited. In this paper, we present a comprehensive framework for universal fault-tolerant logic motivated by the combined need for platform-independent logical gate definitions, flexible and scalable tools for numerical analysis, and exploration of novel schemes for universal logic that improve resource overheads. Central to our framework is the description of logical gates holistically in a way which treats space and time on a similar footing. Focusing on schemes based on surface codes, we introduce explicit, but platform-independent representations of topological logic gates -- called logical blocks -- and generate new, overhead-efficient methods for universal quantum computation. As a specific example, we propose fault-tolerant schemes based on surface codes concatenated with more general low-density parity check (LDPC) codes. The logical blocks framework enables a convenient mapping from an abstract description of the logical gate to a precise set of physical instructions for both circuit-based and fusion-based quantum computation (FBQC). Using this, we numerically simulate a surface-code-based universal gate set implemented with FBQC, and verify that their thresholds are consistent with the bulk memory threshold. We find that boundaries, defects, and twists can significantly impact the logical error rate scaling, with periodic boundary conditions potentially halving the resource requirements. Motivated by the favorable logical error rates for boundaryless computation, we introduce a novel computational scheme based on the teleportation of twists that may offer further resource reductions.
description: 39 pages, 32 figures, comments welcome, v2: published version
Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 77 Nr. 2 (1999)
Creators: name: Germania : Anzeiger Der Römisch-Germanischen Kommission Des Deutschen Archäologischen Instituts
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Titelei
Inhalt
Beschläge einer Gladiusscheide und Teile eines cingulum aus Kalkriese, Lkr. Osnabrück...567-608
Zu Vorkommen und Herkunft italischer Folienkreuze...609-636
Pollenanalytische Untersuchungen am Großen Krebssee, Ostbrandenburg. Ein Beitrag zur Siedlungs- und Vegetationsgeschichte der Neuenhagener Oderinsel...637-659
Zonenrandgebiete und Grenzgänger. Eine methodische Revision zur Zonengliederung der Ölamphoren-Töpfereien in der Baetica...679-704
Jürgen Vollbrecht, Untersuchungen zum Altpaläolithikum im Rheinland...719-724
Jean Clottes, Niaux...727-729
Bernard Gassin, Évolution socio-économique dans le Chasséen de la grotte de l’Église supérieure (Var)...734-740
J.N. Coldstream/H.W. Catling (eds.), Knossos North Cemetery...774-781
Rainer-Maria Weiss, Prähistorische Brandopferplätze in Bayern...782-783
Markus Egg, Das hallstattzeitliche Fürstengrab von Strettweg bei Judenburg in der Obersteiermark...789-793
Kari Kunter, Schichtaugenperlen...793-796
Yves Menez, Une Ferme de l’Armorique gauloise: Le Boisanne à Plouër-sur-Rance...805-808
Zenon Woźniak (Red.), Kontakte längs der Bernsteinstraße (zwischen Caput Adriae und den Ostseegebieten) in der Zeit um Christi Geburt...808-813
Ryszard Wołągiewicz, Lubowidz. Ein birituelles Gräberfeld der Wielbark-Kultur aus der Zeit vom Ende des 1. Jhs. v. Chr. bis zum Anfang des 3. Jhs. n. Chr....814-822
Susanna Künzl, Die Trierer Spruchbecherkeramik...829-831
Der Sassen Speyghel. Sachsenspiegel, Recht, Alltag...846-489
Michel Polfer, Das gallorömische Brandgräberfeld und der dazugehörige Verbrennungsplatz von Septfontaines-Dëckt (Luxemburg)...822-826
Searching double-peaked emission line profiles in the spectra of galaxies through the symmetry of the cross-correlation function
Creators: name: Garcia-Lorenzo, B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The presence of double-peaked/multicomponent emission line profiles in spectra of galaxies is commonly done by visual inspection. However, the identification of complex emission line profiles by eye is unapproachable for large databases such as the Sloan Digital Sky Survey (SDSS) or the integral field spectroscopy surveys of galaxies (e.g. CALIFA or MaNGA). We describe a quick method involving the cross-correlation technique for detecting the presence of complex (double-peaked or multiple components) profiles in the spectra of galaxies, deriving simultaneously a first estimation of the velocity dispersions and radial velocities of the dominant gaseous component. We illustrate the proposed procedure with the well-known complex [OIII]4959,5007 profiles of the central region of NGC1068.
description: 8 pages, 4 figures, MNRAS accepted
Exploration of Spinodal Decomposition in Multi-Principal Element Alloys (MPEAs) using CALPHAD Modeling
Creators: name: Kadirvel, Kamalnath
name: Koneru, Shalini Roy
name: Wang, Yunzhi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Researchers attributed the orderly arranged nanoscale phases observed in many multi-principal element alloys (MPEAs) to spinodal/spinodal-mediated phase transformation pathways. However, spinodal decomposition is not well understood in multicomponent systems. Although the theoretical background is available, CALPHAD databases were not used to explore the miscibility gap in MPEAs. In this work, we develop a CALPHAD framework utilizing the Hessian of free energy to study the stability of solid solutions in MPEAs. In particular, we utilize the geometry of higher dimensional Gibbs simplex in conjunction with the Hessian to calculate concentration modulations in early stages of spinodal decomposition. We apply this framework to a diverse set of multi-phase MPEAs that have been studied in the literature including TiZrNbTa (BCC/BCC), Fe15Co15Ni20Mn20Cu30 (FCC/FCC), Al0.5NbTa0.8Ti1.5V0.2Zr (BCC/B2), AlCo0.4Cr0.6FeNi (BCC/B2) and Al0.5Cr0.9FeNi2.5V0.2 (FCC/L12). We show that the MPEA systems are unstable only to certain concentration modulations which could be further explored to design microstructurally engineered alloys.
description: Submitted to Scripta Materialia, 5 figures, 2 tables
Dilaton Interactions in QCD and in the Electroweak Sector of the Standard Model
Creators: name: Rose, Luigi Delle
name: Serino, Mirko
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We overview the structure of the effective action involving a dilaton and a Higgs in the Standard Model, which has been computed recently for the neutral currents sector. We discuss the role of the dilatation current ($J_D$) and of an effective degree of freedom appearing in the $J_D V V'$ correlator, with $V$ any neutral current, which can be interpreted as a Nambu-Goldstone mode generated by the anomalous breaking of the dilatation symmetry.
description: 4 pages, presented at the workshop "QCD@work", Lecce June 18-21 2012
First implications of LHCb data on models beyond the Standard Model
Creators: name: Carlucci, Maria Valentina
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the theoretical and experimental details of two of the main results obtained by LHCb with the 2011 data, namely the measurement of the mixing-induced CP-violation in the decay B_s -> J/psi phi and the upper limits on the decays B_(s) -> mu+ mu-. Then we describe the possible strategies to obtain new constraints on two different New Physics models in the light of these results.
description: 5 pages, Proceedings of "QCD@Work 2012" - June 18-21, 2012 - Lecce (Italy)
On the stability of the dark energy based on generalized uncertainty principle
Creators: name: Pasqua, Antonio
name: Chattopadhyay, Surajit
name: Khomenko, Iuliia
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The new agegraphic Dark Energy (NADE) model (based on generalized uncertainty principle) interacting with Dark Matter (DM) is considered in this study via power-law form of the scale factor $a(t)$. The equation of state (EoS) parameter $ω_{G}$ is observed to have a phantom-like behaviour. The stability of this model is investigated through the squared speed of sound $v_{s}^{2}$: it is found that $v_{s}^{2}$ always stays at negative level, which indicates instability of the considered model.
description: 8 pages, 2 figures
Rainer-Maria Weiss, Prähistorische Brandopferplätze in Bayern
Creators: name: Gleirscher, Paul
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Rezension zu: Rainer-Maria Weiss, Prähistorische Brandopferplätze in Bayern. Internationale Archäologie, Band 35. Verlag Marie L. Leidorf GmbH, Espelkamp 1997. ISSN 0939-561X, ISBN 3-89646-307-1. 211 Seiten mit 31 Abbildungen und 134 Tafeln.
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 77, Nr. 2 (1999)
In-medium hadron properties from lattice QCD
Creators: name: Ding, Heng-Tong
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: I review recent results from lattice QCD calculations on the in-medium hadron properties. I discuss the thermal dilepton rates, heavy quarkonium properties as well as the chiral and $U(1)_A$ symmetries at finite temperature.
description: 8 pages, invited talk at the "Hadronic resonance production in heavy ion and elementary collisions" workshop, UT Austin, March 5-7 2012
Additional file 1 of Chemotherapy induces ACE2 expression in breast cancer via the ROS-AKT-HIF-1α signaling pathway: a potential prognostic marker for breast cancer patients receiving chemotherapy
Creators: name: Zuo, Xiaoyan
name: Ren, Sixin
name: Zhang, He
name: Tian, Jianfei
name: Tian, Ruinan
name: Han, Baoai
name: Liu, Hui
name: Dong, Qian
name: Wang, Zhiyong
name: Cui, Yanfen
name: Niu, Ruifang
name: Zhang, Fei
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: Cancer
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: Additional file 1: Table S1. The primers used for qRT-PCR in this study. Table S2. The sequence of siRNAs target ACE2 and HIF-1α used in this study. Table S3. The sequence for shACE2 used in this study. Table S4. Clinicopathological characteristics of healthy donors and breast cancer patients enrolled in this study. Table S5. IC50 of breast cancer, colorectal cancer and pancreatic cancer cell lines in GDSC.
The first INTEGRAL-OMC catalogue of optically variable sources
Creators: name: Alfonso-Garzón, J.
name: Domingo, A.
name: Mas-Hesse, J. M.
name: Giménez, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Optical Monitoring Camera (OMC) onboard INTEGRAL provides photometry in the Johnson V-band. With an aperture of 50 mm and a field of view of 5deg x 5deg, OMC is able to detect optical sources brighter than V~18, from a previously selected list of potential targets of interest. After more than nine years of observations, the OMC database contains light curves for more than 70000 sources (with more than 50 photometric points each). The objectives of this work have been to characterize the potential variability of the objects monitored by OMC, to identify periodic sources and to compute their periods, taking advantage of the stability and long monitoring time of the OMC. To detect potential variability, we have performed a chi-squared test, finding 5263 variable sources out of an initial sample of 6071 objects with good photometric quality and more than 300 data points each. We have studied the periodicity of these sources using a method based on the phase dispersion minimization technique, optimized to handle light curves with very different shapes.In this first catalogue of variable sources observed by OMC, we provide for each object the median of the visual magnitude, the magnitude at maximum and minimum brightness in the light curve during the window of observations, the period, when found, as well as the complete intrinsic and period-folded light curves, together with some additional ancillary data.
description: Accepted by Astronomy & Astrophysics; 13 pages, 16 figures. Figures' resolution has been degraded to fit astro-ph constraints
W. Haio Zimmermann, Pfosten, Ständer und Schwellen und der Übergang vom Pfostenzum Ständerbau
Creators: name: Trier, Bendix
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Rezension zu: W. Haio Zimmermann, Pfosten, Ständer und Schwellen und der Übergang vom Pfostenzum
Ständerbau. Eine Studie zu Innovation und Beharrung im Hausbau. Zu Konstruktion
und Haltbarkeit prähistorischer bis neuzeitlicher Holzbauten von den Nord- und
Ostseeländern bis zu den Alpen. Probleme der Küstenforschung im Südlichen Nordseegebiet,
Band 25. Herausgegeben vom Niedersächsischen Institut für historische Küstenforschung,
Wilhelmshaven. Isensee Verlag, Oldenburg 1998. ISBN 3-89598-629-
1, ISSN 0343-7965. 232 Seiten, 122 Abbildungen und 2 Tabellen.
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 80 Nr. 1 (2002)
Modified DDPG car-following model with a real-world human driving experience with CARLA simulator
Creators: name: Li, Dianzhao
name: Okhrin, Ostap
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In the autonomous driving field, fusion of human knowledge into Deep Reinforcement Learning (DRL) is often based on the human demonstration recorded in a simulated environment. This limits the generalization and the feasibility of application in real-world traffic. We propose a two-stage DRL method to train a car-following agent, that modifies the policy by leveraging the real-world human driving experience and achieves performance superior to the pure DRL agent. Training a DRL agent is done within CARLA framework with Robot Operating System (ROS). For evaluation, we designed different driving scenarios to compare the proposed two-stage DRL car-following agent with other agents. After extracting the "good" behavior from the human driver, the agent becomes more efficient and reasonable, which makes this autonomous agent more suitable for Human-Robot Interaction (HRI) traffic.
Massless Scalar Degrees of Freedom in QCD and in the Electroweak Sector from the Trace Anomaly
Creators: name: Rose, Luigi Delle
name: Serino, Mirko
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The interaction of QCD and electroweak sector with gravity is characterized by the generation of a massless pole in a specific form factor present in the 1-loop effective action. We briefly illustrate how to single out this behaviour in perturbation theory, by taking as an example the $TJJ$ vertex, with $T$ denoting the energy momentum tensor of the Standard Model. The breaking of scale invariance, due to the trace anomaly, is then related to the appearance of a local degree of freedom in the effective action, which is of dilaton type.
description: 5 pages, presented at the workshop "QCD@work", Lecce, June 18-21, 2012
title: The scaling method applied to HALO measurements: Inferring absolute trace gas concentrations from airborne limb spectroscopy under all sky conditions
Creators: name: Hüneke, Tilman
Publisher: name: Heidelberg University Library
Year: 2017

description: The novel HALO mini-DOAS instrument was developed for measurements of UV/vis/near-IR spectra of scattered
skylight in limb and nadir geometry aboard the new research aircraft HALO. The absorptions of a suite
of trace gases (O3, O4, NO2, CH2O, BrO, OClO, and others) are identified in the measured spectra using the
DOAS-technique. Previously employed methods to infer absolute concentrations from DOAS measurements
rely on a priori knowledge of aerosols and cloud cover. The recently developed scaling method promises to enable
the retrieval of target gas concentrations under all sky conditions. Effective light path lengths are estimated
by employing a scaling gas, whose concentration at flight level is known, in conjunction with modelled profile
shapes, radiative transfer calculations, and using the measured absorptions of the targeted species relative
to those of the scaling gas. The present thesis describes the development and characterises the measurement
properties of the HALO mini-DOAS instrument. For the first time, random and systematic errors of the scaling
method are thoroughly investigated. It is argued that random errors are 10 – 20% for most measurement conditions
and that the scaling method is practically unperturbed by changing cloud cover if applied appropriately.
It is however shown that biases may occur if the assumed profile shapes are significantly different from actual
profile shapes. Retrieved mixing ratios of BrO and NO2 from measurements obtained during the science mission
TACTS/ESMVal in August/September 2012 indicate that (a) no enhanced tropospheric BrO was detected
in the mid-troposphere (3.5 – 9 km altitude) near the Antarctic continent (65° S) in spring (Sept. 13, 2012), (b)
LMS and bottom polar vortex [BrO] agree with previous measurements, (c) other oxidants beside O3 influence
NO oxidation in the UT/LS where [N2O] < 310 ppb, and (d) the same finding was confirmed for very low-NOx
conditions, although the latter measurements are uncertain.