cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
GID-Testable Two-Dimensional Sequential Arrays for Self-Testing
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: 80302 Computer System Architecture
subject: FOS: Computer and information sciences

description: This paper presents an approach for easily testable two-dimensional sequential arrays. This approach is an extension of GID(Group Identical and Different)- testability of combinational arrays in our previous work [8]. In a GID-testable two-dimensional array, the primary x and y outputs are organized into groups and every group has more than one output. GID-testability not only ensures that identical test responses can he obtained from every output in the same group when the array is fault free, but it also ensures at least one output has different test responses from other outputs in a group when Q cell in the array is faulty. Therefore, all faults can be detected under the assumption of a single faulty cell model. It is proved that an arbitrary two-dimensional sequential array is GID-testable if seven x-states and seven y-states are added to the original flow table of the basic cell of the array.
Helstrom Theorem by No-Signaling Condition
Creators: name: Hwang, W. -Y.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We prove a special case of Helstrom theorem by using no-signaling condition in the special theory of relativity that faster-than-light communication is impossible.
description: Minor corrections (A reference added, discussion part deleted, typos in equations corrected), 2 pages, RevTex
Hybrid stars with sequential phase transitions: the emergence of the g$_2$ mode
Creators: name: Rodriguez, M. C.
name: Ranea-Sandoval, I. F.
name: Mariani, M.
name: Orsaria, M. G.
name: Malfatti, G.
name: Guilera, O. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Neutron stars are the densest objects in the Universe, with $M \sim 1.4 M_{\odot}$ and $R \sim 12$ km, and the equation of state associated to their internal composition is still unknown. The extreme conditions to which matter is subjected inside neutron stars could lead to a phase transition in their inner cores, giving rise to a hybrid compact object. The observation of $2M_{\odot}$ binary pulsars (PSR~J1614-2230, PSR~J0343$+$0432 and PSR~J0740$+$6620) strongly constraints theoretical models of the equation of state. Moreover, the detection of gravitational waves emitted during the binary neutron star merger, GW170817, and its electromagnetic counterpart, GRB170817A, impose additional constraints on the tidal deformability. In this work, we investigate hybrid stars with sequential phase transitions hadron-quark-quark in their cores. We assume that both phase transitions are sharp and analyse the rapid and slow phase conversion scenarios. For the outer core, we use modern hadronic equations of state. For the inner core we employ the constant speed of sound parametrization for quark matter. We analyze more than 3000 hybrid equations of state, taking into account the recent observational constraints from neutron stars. The effects of hadron-quark-quark phase transitions on the normal oscillation modes $f$ and $g$, are studied under the Cowling relativistic approximation. Our results show that, in the slow conversion regime, a second quark-quark phase transition gives rise to a new $g_2$~mode. We discuss the observational implications of our results associated to the gravitational waves detection and the possibility of detecting hints of sequential phase transitions and the associated $g_2$~mode.
description: 24 pages, 9 figures
Parafermions, parabosons and representations of so(\infty) and osp(1|\infty)
Creators: name: Stoilova, N. I.
name: Van der Jeugt, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Group Theory (math.GR)
subject: Representation Theory (math.RT)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The goal of this paper is to give an explicit construction of the Fock spaces of the parafermion and the paraboson algebra, for an infinite set of generators. This is equivalent to constructing certain unitary irreducible lowest weight representations of the (infinite rank) Lie algebra so(\infty) and of the Lie superalgebra osp(1|\infty). A complete solution to the problem is presented, in which the Fock spaces have basis vectors labelled by certain infinite but stable Gelfand-Zetlin patterns, and the transformation of the basis is given explicitly. We also present expressions for the character of the Fock space representations.
Thermodynamic bounds on generalized transport: From single-molecule to bulk observables
Creators: name: Dieball, Cai
name: Godec, Aljaž
Publisher: name: arXiv
Year: 2024
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We prove that the transport of any differentiable scalar observable in $d$-dimensional non-equilibrium systems is bounded from above by the total entropy production scaled by the amount the observation "stretches" microscopic coordinates. The result--a time-integrated generalized speed limit--reflects the thermodynamic cost of transport of observables, and places underdamped and overdamped stochastic dynamics on equal footing with deterministic motion. Our work allows for stochastic thermodynamics to make contact with bulk experiments, and fills an important gap in thermodynamic inference, since microscopic dynamics is, at least for short times, underdamped. Requiring only averages but not sample-to-sample fluctuations, the proven transport bound is practical and applicable not only to single-molecule but also bulk experiments where only averages are observed, which we demonstrate by examples. Our results may facilitate thermodynamic inference on molecular machines without an obvious directionality from bulk observations of transients probed, e.g.\ in time-resolved X-ray scattering.
RNS-Based Zero-Remainder Checking Algorithm
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: 10399 Numerical and Computational Mathematics not elsewhere classified
subject: FOS: Mathematics

description: In a Rivest-Shamir-Adleman (RSA) public key system, the security of the system is based on the difficulty of factorization of a known number N to unknown pairs P and Q such that N = P * Q. In this paper, an RNS-based (Residue Number System) Zero-Remainder Checking algorithm (ZRC) that can acquire parallelism on arithmetic level is presented. With this RNS-based ZRC algorithm, the known RNS system number N that is the public modulus in RSA cryptosystem can find its two factors, P and Q, by multiplication, a subtraction, and a sign detection operation as a substitute of the time and hardware consuming division operation in RNS. The RNS-Based ZRC algorithm is hence important as it provides the parallel computing environment on arithmetic level and significantly reduces the required processing time and hardware resource by avoiding the operation of RNS division.
An Optomechanical Platform for Quantum Hypothesis Testing for Collapse Models
Creators: name: Marchese, Marta Maria
name: Belenchia, Alessio
name: Pirandola, Stefano
name: Paternostro, Mauro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum Hypothesis Testing has shown the advantages that quantum resources can offer in the discrimination of competing hypothesis. Here, we apply this framework to optomechanical systems and fundamental physics questions. In particular, we focus on an optomechanical system composed of two cavities employed to perform quantum channel discrimination. We show that input squeezed optical noise, and feasible measurement schemes on the output cavity modes, allow to obtain an advantage with respect to any comparable classical schemes. We apply these results to the discrimination of models of spontaneous collapse of the wavefunction, highlighting the possibilities offered by this scheme for fundamental physics searches.
description: 10 pages, 10 figures, 1 table
GROOLS: reactive graph reasoning for genome annotation
Creators: name: Mercier, Jonathan
name: Vallenet, David
Publisher: name: F1000Research
Year: 2015

description: GROOLS (Genomic Rule Oriented Object Logic System) is an expert system to help biologists in the evaluation of genome functional annotation through biological processes like metabolic pathways. Such reasoning is conducted using a Business Rule Management System (BRMS) working on a generic representation of biological knowledge that captures complex data and relationships. We use the Object-Oriented First Order Logic (OOFOL) extended to a four-valued logic. Knowledge objects are organized in a directed acyclic graph and are confronting to observations by applying reactive graph reasoning. Two types of observations are considered: predictions from bioinformatics methods and assertions that correspond to experimental evidences in the studied organism. Once all facts are spread over the graph, a conclusion is made on each knowledge. GROOLS implementation is based on the jBoss DROOLS framework.
Versatile Optical Frequency Division with Kerr-induced Synchronization at Tunable Microcomb Synthetic Dispersive Waves
Creators: name: Moille, Gregory
name: Shandilya, Pradyoth
name: Niang, Alioune
name: Menyuk, Curtis
name: Carter, Gary
name: Srinivasan, Kartik
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Kerr-induced synchronization (KIS) provides a new key tool for the control and stabilization of the repetition rate of a cavity soliton frequency comb. It enables direct external control of a given comb tooth of a dissipative Kerr soliton (DKS) thanks to its capture by an injected reference laser. Efficient KIS requires its coupling energy to be sufficiently large, and hence both the comb tooth and intracavity reference power must be optimized, which can be achieved through higher-order dispersion that enables phase-matched dispersive waves (DWs), where comb teeth are on resonance. However, such a design is highly restrictive, preventing arbitrary use of reference wavelengths away from the DW(s). In particular, for large spectral separations from the main pump the cavity dispersion yields large detuning between comb teeth and their respective cavity resonances, thereby decreasing the coupling energy and rendering KIS to be highly inefficient or practically impossible. Here, we demonstrate an alternative KIS method where efficient synchronization can be tailored at arbitrary modes as needed. Using a multi-color DKS created from multi-pumping a microresonator, a synthetic DW at the second-color wavepacket can be selectively created where otherwise dispersion is far too large for KIS to be experimentally feasible. Since a unique group velocity for both colors exists thanks to cross-phase modulation, the repetition rate disciplining of the secondary color wavepacket through its KIS automatically translates into the DKS microcomb control. We first investigate this color-KIS phenomenon theoretically, and then experimentally demonstrate its control and tuning of the soliton microcomb repetition rate. As a consequence, we demonstrate optical frequency division that is uncoupled from the main pump that generates the DKS.
Magnetization Reversal in Elongated Fe Nanoparticles
Creators: name: Li, Yongqing
name: Xiong, Peng
name: von Molnar, Stephan
name: Ohno, Yuzo
name: Ohno, Hideo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Magnetization reversal of individual, isolated high-aspect-ratio Fe nanoparticles with diameters comparable to the magnetic exchange length is studied by high-sensitivity submicron Hall magnetometry. For a Fe nanoparticle with diameter of 5 nm, the magnetization reversal is found to be an incoherent process with localized nucleation assisted by thermal activation, even though the particle has a single-domain static state. For a larger elongated Fe nanoparticle with a diameter greater than 10 nm, the inhomogeneous magnetic structure of the particle plays important role in the reversal process.
description: 6 pages, 6 figures, to appear in Phys. Rev. B (2005)
Interview about Japanese plane crash, duu de baabaa, personal history
Creators: name: Leonard, Hasuko
name: Drummond, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: subject: nkr

description: Three .mov video files, one .wav audio file, and one .eaf ELAN transcription file for an interview about a Japanese plane crashing on Nukuoro Atoll, a story called "duu de baabaa", and personal history.
High-Intensity Reflective Materials for Signs
Creators: name: Rizenbergs, Rolands L.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1974
Subjects: subject: Transportation Engineering

description: Field observations and laboratory tests and evaluations were conducted on High-Intensity and Engineering Grade materials (Scotchlite), manufactured by the Minnesota Mining and Manufacturing Company, and were compared in regard to reflectivity, durability, and cost.  The High-Intensity Grade materials were found to have outstanding performance characteristics in comparison to Engineering Grade materials. The material significantly enhances sign legibility under low-beam illumination, and accelerated weathering tests showed superior durability.
Phase estimation of time-bin qudits by time-resolved single-photon counting
Creators: name: Czerwinski, Artur
name: Sedziak-Kacprowicz, Karolina
name: Kolenderski, Piotr
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a comprehensive framework for quantum state tomography (QST) of time-bin qudits sent through a fiber. Starting from basic assumptions, we define a positive-operator valued measure (POVM) which is then applied to the quantum state reconstruction problem. A realistic scenario is considered where the time uncertainty of the detector is treated as a source of experimental noise. The performance of the quantum tomography framework is examined through a series of numerical simulations conducted for different parameters describing the apparatus. The quality of state recovery, quantified by the notion of minimum fidelity, is depicted on graphs for a range of fiber lengths. Special attention is paid to relative phase reconstruction for qubits and qutrits. The results present relevant interdependence between the fiber length and the detector jitter.
Transport and integrability-breaking in non-Hermitian many-body quantum systems
Creators: name: Mahoney, Dylan E.
name: Richter, Jonas
Publisher: name: arXiv
Year: 2024
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Describing open quantum systems in terms of effective non-Hermitian Hamiltonians gives rise to non-unitary time evolution. In this paper, we study the impact of non-unitary dynamics on the emergent hydrodynamics in quantum systems with a global conservation law. To this end, we demonstrate how linear-response correlation functions can be generalized and interpreted in the case of non-Hermitian systems. Moreover, we show that dynamical quantum typicality provides an efficient numerical approach to evaluate such correlation functions, even though the non-unitary dynamics leads to subtleties that are absent in the Hermitian case. As a point of reference for our analysis, we consider the Hermitian spin-$1/2$ XXZ chain, whose high-temperature transport properties have been characterized extensively in recent years. Here, we explore the resulting hydrodynamics for different non-Hermitian perturbations of the XXZ chain. We also discuss the role of integrability by studying the complex energy-level statistics of the non-Hermitian quantum models.
description: 13 pages, 9 figures
Enhanced dynamical entanglement transfer with multiple qubits
Creators: name: Serafini, A.
name: Paternostro, M.
name: Kim, M. S.
name: Bose, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We present two strategies to enhance the dynamical entanglement transfer from continuous variable (CV) to finite dimensional systems by employing multiple qubits. First, we consider the entanglement transfer to a composite finite dimensional system of many qubits simultaneously interacting with a bipartite CV field. We show that, considering realistic conditions in the generation of CV entanglement, a small number of qubits resonantly coupled to the CV system is sufficient for an almost complete dynamical transfer of the entanglement. Our analysis also sheds further light on the transition between microscopic and macroscopic behaviours of composite finite dimensional systems coupled to bosonic fields (like atomic clouds interacting with light). Furthermore, we present a protocol based on sequential interactions of the CV system with some ancillary qubit systems and on subsequent measurements, allowing to probabilistically convert CV entanglement into `almost perfect' Bell pairs of two qubits. Our proposals are suited for realizations in various experimental settings, ranging from cavity-QED to cavity-integrated superconducting devices.
description: 10 pages, 8 figures, RevTeX4; terminology revised; accepted for publication
Voidless Concrete Mixtures for Bridge Decks
Creators: name: Rahal, Assaf S.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1974
Subjects: subject: Transportation Engineering

description: The purpose of this study was to modify concrete mix-design formulas to supplant all water over and above that needed for hydration with a non-evaporable material -- thus producing a no-void concrete. It was adjudged that a water-cement ratio of 0.244 would be practical for hydration of the cement. Several polymeric materials, asphalts, and oils were used to replace the excess mixing water. Success was achieved using two latexes and one epoxy. The use of these materials in concrete resulted in improved strength, reduction of air voids and permeability, and enhancement of resistance to corrosive chloride salts.
Combining strong and weak lensing estimates in the Cosmos field
Creators: name: Kuhn, Felix Arjun
name: Bruderer, Claudio
name: Birrer, Simon
name: Amara, Adam
name: Réfrégier, Alexandre
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a combined cosmic shear analysis of the modeling of line-of-sight distortions on strongly lensed extended arcs and galaxy shape measurements in the COSMOS field. We develop a framework to predict the covariance of strong lensing and galaxy shape measurements of cosmic shear on the basis of the small scale matter power-spectrum. The weak lensing measurement is performed using data from the COSMOS survey calibrated with a cloning scheme using the Ultra Fast Image Generator UFig (Berge 2013). The strong lensing analysis is performed by forward modeling the lensing arcs with a main lensing deflector and external shear components from the same Hubble Space Telescope imaging data set. With a sample of three strong lensing shear measurements we present a 2-sigma detection of the cross-correlation signal between the two complementary measurements of cosmic shear along the identical line of sight. With large samples of lenses available with the next generation ground and space based observatories, the covariance of the signal of the two probes with large samples of lenses allows for systematic checks, cross-calibration of either of the two measurement and the measurement of the small scale shear power-spectrum.
description: 27 pages, 7 figures, 4 tables
An Automatic System Measuring Electromagnetic Parameters for Oil Field Pipes
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: 10399 Numerical and Computational Mathematics not elsewhere classified
subject: FOS: Mathematics

description: The fault detection and diagnosis of oil field pipes are very important to the petroleum companies. As lo known, the fault of steel products can be detected based on the eddy current technique. The depth of a defect on an oil field pipe will determine the change in amplitude and phase of the detect signal However, this signal is also affected by electromagnetic parameters in the vicinity of the fault. It is impossible, therefore, to accurately interpret the severity of the fault from a detect signal, without the knowledge of electromagnetic parameters. A system which can automatically measure electromagnetic parameters of oil field pipes has been developed, so that the correct interpretation of pipe defect can be provided. An electronic emulator was built for differentiating the permeability of pipes accurately. The electronic emulator takes the signal from the transmission circuit, and converts it to the compensation signal with a certain amplitude and phase shift according to the presentings. The combined received signal and compensation signal are conditioned and compared with the transmitting signal to give the expanded phase shift signal at the output. To stand the rigorous working condition in the underground pipes, the system is made capable of working at high temperature. Also taken into account is the variation of the internal diameter and the wall thickness of casing pipes, which affect the measurement of electromagnetic parameters. Therefore, the system can provide the high sensitivity electromagnetic parameters for interpreting various types of defects in oil field pipes
Transformers for Low-Resource Languages: Is Féidir Linn!
Creators: name: Lankford, Séamus
name: Afli, Haithem
name: Way, Andy
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The Transformer model is the state-of-the-art in Machine Translation. However, in general, neural translation models often under perform on language pairs with insufficient training data. As a consequence, relatively few experiments have been carried out using this architecture on low-resource language pairs. In this study, hyperparameter optimization of Transformer models in translating the low-resource English-Irish language pair is evaluated. We demonstrate that choosing appropriate parameters leads to considerable performance improvements. Most importantly, the correct choice of subword model is shown to be the biggest driver of translation performance. SentencePiece models using both unigram and BPE approaches were appraised. Variations on model architectures included modifying the number of layers, testing various regularisation techniques and evaluating the optimal number of heads for attention. A generic 55k DGT corpus and an in-domain 88k public admin corpus were used for evaluation. A Transformer optimized model demonstrated a BLEU score improvement of 7.8 points when compared with a baseline RNN model. Improvements were observed across a range of metrics, including TER, indicating a substantially reduced post editing effort for Transformer optimized models with 16k BPE subword models. Bench-marked against Google Translate, our translation engines demonstrated significant improvements. The question of whether or not Transformers can be used effectively in a low-resource setting of English-Irish translation has been addressed. Is féidir linn - yes we can.
description: 13 pages
Molecular hydrogen formation on grain surfaces
Creators: name: Cazaux, S.
name: Caselli, P.
name: Tielens, A. G. G. M.
name: Bourlot, J. Le
name: Walmsley, M. C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We reconsider H2 formation on grain surfaces. We develop a rate equation model which takes into account the presence of both physisorbed and chemisorbed sites on the surface, including quantum mechanical tunnelling and thermal diffusion. In this study, we took into consideration the uncertainties on the characteristics of graphitic surfaces. We calculate the H2 formation efficiency with the Langmuir Hinshelwood and Eley Rideal mechanisms, and discuss the importance of these mechanisms for a wide range of grain and gas temperatures. We also develop a Monte Carlo simulation to calculate the H2 formation efficiency and compare the results to our rate equation models. Our results are the following: (1) Depending on the barrier against chemisorption, we predict the efficiency of H2 formation for a wide range of grain and gas temperatures. (2) The Eley-Rideal mechanism has an impact on the H2 formation efficiency at high grain and gas temperatures. (3) The fact that we consider chemisorption in our model makes the rate equation and Monte Carlo approaches equivalent.
description: in "Light, dust and chemical evolution", Journal of Physics: Conference Series
On efficient asymptotic modelling of thin films on thermally conductive substrates
Creators: name: Allaire, Ryan H.
name: Cummings, Linda J.
name: Kondic, Lou
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We consider a free surface thin film placed on a thermally conductive substrate and exposed to an external heat source in a setup where the heat absorption depends on the local film thickness. Our focus is on modeling film evolution while the film is molten. The evolution of the film modifies local heat flow, which in turn may influence the film surface evolution through thermal variation of the film's material properties. Thermal conductivity of the substrate plays an important role in determining the heat flow and the temperature field in the evolving film and in the substrate itself. In order to reach a tractable formulation, we use asymptotic analysis to develop a novel thermal model that is accurate, computationally efficient, and that accounts for the heat flow in both the in-plane and out-of plane directions. We apply this model to metal films of nanoscale thickness exposed to heating and melting by laser pulses, a setup commonly used for self and directed assembly of various metal geometries via dewetting while the films are in the liquid phase. We find that thermal effects play an important role, and in particular that the inclusion of temperature dependence in the metal viscosity modifies the time scale of the evolution significantly. On the other hand, in the considered setup the Marangoni (thermocapillary) effect turns out to be insignificant.
description: 35 pages, 16 figures
In-Place Detection of Internal and External Corrosion for Underground Casing Pipes
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: 10399 Numerical and Computational Mathematics not elsewhere classified
subject: FOS: Mathematics

description: Corrosion monitoring and early detection of pits and wall thinning considerably important to the gas and petroleum industry. A new noncontact AC electromagnetic induction system has been developed for monitoring and detecting the corrosion in multi-string casing configuration. The system includes a sonde which has a transmitter coil and three receiver coils, with the transmitter circuit generating three low different frequencies at the same time. The multi-frequency AC current through the coil induces in the pipe wall a longitudinal alternating magnetic fields which is sensed by three receiver coils located at different distances. The multiple transmitter frequencies and the multiple transmitter-receiver spacings can provide the maximum flexibility and the most extensive information in quantitatively determining the total wall thickness in single, dual, and three-string casing configuration.
Due to the rigorous working conditions in underground casing pipes, the transmitter circuits are specially designed so that it can continuously work under high temperature of up to 175°C without having a “second break down”. On the other side, since the dynamic range of received signal is very broad and the “road noise” is very severe, the high-stable high-accurate band pass filter and hard limiters are adopted in the receiver circuit and phase detect circuit. In order to discriminate the internal corrosion and external corrosion of casing pipe, an “electronic caliper” is incorporated in the new AC electromagnetic induction system to detect the average circumferential diameter of casing pipes. Therefore, the complete logging of the casing pipes can be accompanied with a single scan.
Selawry, Alla: Johannes von Kronstadt - Starez Rußlands
Creators: name: Basdekis, Athanasios
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 31 Nr. 1 (1982): Ökumenische Rundschau, Band 31, Heft 1
HELLO project: High-$z$ Evolution of Large and Luminous Objects
Creators: name: Waterval, Stefan
name: Macciò, Andrea V.
name: Buck, Tobias
name: Obreja, Aura
name: Cho, Changhyun
name: Jin, Zehao
name: Davis, Benjamin L.
name: Dixon, Keri L.
name: Kang, Xi
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the High-$z$ Evolution of Large and Luminous Objects (HELLO) project, a set of $\sim\!30$ high-resolution cosmological simulations aimed to study Milky Way analogues ($M_\star\sim10^{10-11}$\,\Msun) at high redshift ($z\sim [2-4]$). Based on the Numerical Investigation of a Hundred Astrophysical Objects (NIHAO), HELLO features an updated scheme for chemical enrichment and the addition of local photoionization feedback. Independently of redshift and mass, our galaxies exhibit a smooth progression along the star formation main sequence until $M_\star \sim\!10^{10.5}$, around which our sample at $z \sim 4$ remains mostly unperturbed while the most massive galaxies at $z \sim 2$ reach their peak star formation rate (SFR) and its subsequent decline, due to a mix of gas consumption and stellar feedback. While AGN feedback remains subdominant with respect to stellar feedback for energy deposition, its localised nature likely adds to the physical processes leading to declining SFRs. The phase in which a galaxy in our mass range can be found at a given redshift is set by its gas reservoir and assembly history. Finally, our galaxies are in excellent agreement with various scaling relations observed with the \textit{Hubble Space Telescope} and the \textit{James Webb Space Telescope}, and hence can be used to provide the theoretical framework to interpret current and future observations from these facilities and shed light on the transition from star-forming to quiescent galaxies.
description: 21 pages, 15 figures, 3 tables, published in MNRAS
Dynamic sound attenuation at hypersonic frequencies in silica glass
Creators: name: Levelut, Claire
name: Parc, Rozenn Le
name: Pelous, Jacques
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: In order to clarify the origin of the dominant processes responsible for the acoustic attenuation of phonons, which is a much debatted topic, we present Bril louin scattering experiments in various silica glasses of different OH impurities content. A large temperature range, from 5 to 1500 K is investigated, up to the glass transition temperature. Comparison of the hypersonic wave attenuation in various samples allows to identify two different processes. The first one induce s a low temperature peak related to relaxational processes; it is strongly sensitive to the extrinsic defects. The second, dominant in the hig h temperature range, is weakly dependent on the impurities and can be ascribed to anharmonic interactions.
A New Approach for Finding Loop Transformation Matrices
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: 80302 Computer System Architecture
subject: FOS: Computer and information sciences

description: Traditional approach for generating loop transformation matrix, which is based upon the computation of distance vectors or direction vectors, does not work for those nested loops whose distance vectors are uncomputable and direction vectors contain no useful information. In this paper, we present a new technique for generating transformation matrix that is based upon identifying certain types of linear equations or inequalities of distance vectors. Two issues related to this technique are discussed in this paper: 1) Given a nested loop how to identify these linear equations or inequalities; 2) Given a such linear equation or inequality how to generate a legal and unimodular transformation matrix for the purpose of loop parallelization.
ObjectCompose: Evaluating Resilience of Vision-Based Models on Object-to-Background Compositional Changes
Creators: name: Malik, Hashmat Shadab
name: Huzaifa, Muhammad
name: Naseer, Muzammal
name: Khan, Salman
name: Khan, Fahad Shahbaz
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Given the large-scale multi-modal training of recent vision-based models and their generalization capabilities, understanding the extent of their robustness is critical for their real-world deployment. In this work, we evaluate the resilience of current vision-based models against diverse object-to-background context variations. The majority of robustness evaluation methods have introduced synthetic datasets to induce changes to object characteristics (viewpoints, scale, color) or utilized image transformation techniques (adversarial changes, common corruptions) on real images to simulate shifts in distributions. Recent works have explored leveraging large language models and diffusion models to generate changes in the background. However, these methods either lack in offering control over the changes to be made or distort the object semantics, making them unsuitable for the task. Our method, on the other hand, can induce diverse object-to-background changes while preserving the original semantics and appearance of the object. To achieve this goal, we harness the generative capabilities of text-to-image, image-to-text, and image-to-segment models to automatically generate a broad spectrum of object-to-background changes. We induce both natural and adversarial background changes by either modifying the textual prompts or optimizing the latents and textual embedding of text-to-image models. We produce various versions of standard vision datasets (ImageNet, COCO), incorporating either diverse and realistic backgrounds into the images or introducing color, texture, and adversarial changes in the background. We conduct extensive experiments to analyze the robustness of vision-based models against object-to-background context variations across diverse tasks. Code https://github.com/Muhammad-Huzaifaa/ObjectCompose.
Parallel Algorithms for The Static Dictionary Compression
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: 80199 Artificial Intelligence and Image Processing not elsewhere classified
subject: FOS: Computer and information sciences

description: We study parallel algorithms for two static dictionary compression strategies. One is the optimal dictionary compression with dictionaries that have the prefix property, for which our algorithm requires O(L + log n) time and O(n) processors where L is the maximum allowable length of the dictionary entries, while previous results run in O(L + log n) time using O(n) processors: or in O(L + log2 n) time using O(n) processors. The other is the longest fragment first (LFF) dictionary compression, for which our algorithm requires O(L + log n) time and O(nL) processors, while previous result has O(L log n) time performance on O(n / log n) processors. We also show that the sequential LFF dictionary compression can be computed on-line with the lookahead of length O(L2)
Hügel, Friedrich von / Söderblom, Nathan / Heiler, Friedrich: Briefwechsel 1909-1931
Creators: name: Kg.
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 31 Nr. 1 (1982): Ökumenische Rundschau, Band 31, Heft 1
Comparative advantages and competitiveness of Hungarian and Slovenian agro-food trade in the EU markets
Creators: name: Bojnec, Stefan
name: Ferto, Imre
name: Bojnec, Stefan
name: Ferto, Imre
Publisher: name: Unknown
Year: 2006
Subjects: subject: International Relations/Trade
subject: Comparative Advantage
subject: Price Competition
subject: Agro- Food Trade.

description: The paper investigates comparative advantages and competitiveness of Hungarian and Slovenian agro- food trade in the EU markets. Applying a highly disaggregated trade dataset, we describe the pattern of agro- food trade in Hungary and Slovenia using the Balassa index. The extent of trade specialization exhibits a declining trend. Both countries have lost comparative advantage for a number of product groups over time. The indices of specialization have tended to converge. For particular product groups, the indices display greater variation. They are stable for product groups with comparative disadvantage, but product groups with weak to strong comparative advantage show significant variation. The price competition, quality competition and the one- way trade are also analyzed using extended [1] approach. In Hungarian matched two- way agro- food trade the prevalence is on successful price competition and on successful non- price or quality competition suggesting comparative advantages for Hungarian agro- food product s vis- àvis bilateral trading partners. In Slovenian matched two- way agro- food trade the prevalence is on the non- successful price competition and on the non- successful quality competition suggesting comparative trade disadvantages vis- à- vis bilateral trading partners .
String spectrum of curved string backgrounds obtained by T-duality and shifts of polar angles
Creators: name: Russo, Jorge G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A class of exactly solvable string models can be obtained by starting with flat space and combining T-duality and shifts of angular coordinates of several polar planes. The models are the analog of the Lunin-Maldacena β-deformation of the AdS_5 x S^5 type IIB string background, which is dual to a Leigh-Strassler deformation of \N=4 Super Yang-Mills Theory. We determine the complete physical string spectrum for two string models obtained in this way, by explicitly solving the string equations and quantizing in terms of free creation and annihilation operators. We also show that the 3-parameter (b_1,b_2,b_3) model, obtained by three independent TsT transformations, has tachyons in some regions of the parameter space.
description: 14 pages. Small corrections
Agricultural situation report of Cyprus and the market and trade policies for fruit/vegetable and olive oil
Creators: name: Markou, Marinos
name: Kavazis, Andreas
name: Markou, Marinos
name: Kavazis, Andreas
Publisher: name: Unknown
Year: 2006
Subjects: subject: International Relations/Trade
subject: Domestic Resource Cost
subject: Competitiveness
subject: Tomatoes
subject: Oranges
subject: Olive Oil

description: During the last decade the Cypriot agricultural sector has been declining in terms of most indices in the economy, mainly due to the spiraling growth of tourism, as crucial investment outlays were diverted from agriculture to tourism; the most important factors of production being land and labor due to substantially higher yields accruing to both. The Domestic Resource Cost (DRC) revealed that the three products studied for the period 1997 to 2000, i.e. tomatoes, oranges and olive oil had a comparative advantage. However, the opening of the European market with EU accession led to the substantive undermining of competitiveness of agricultural products and to the reduction of the value of exports. It is believed that DRC ratios would be higher today that the ones reported, due to unchanged /decreased border prices and increased costs of tradable inputs. It is suggested that the tomato, orange and olive oil sectors will become more competitive in the European market if factors that are affecting their marketing, like differentiation of production and quality, are improved. New concepts like organic farming and products of origin are very important and may provide profitable outlets in the new globalized economy. Additionally, favorable climatic conditions are vastly for and conducive to the production of early season Mediterranean products with obvious premium attached in the market place.
Characterizing categorically closed commutative semigroups
Creators: name: Banakh, Taras
name: Bardyla, Serhii
Publisher: name: arXiv
Year: 2021
Subjects: subject: Commutative Algebra (math.AC)
subject: General Topology (math.GN)
subject: FOS: Mathematics
subject: 22A15, 20M18

description: Let $\mathcal C$ be a class of Hausdorff topological semigroups which contains all zero-dimensional Hausdorff topological semigroups. A semigroup $X$ is called $\mathcal C$-$closed$ if $X$ is closed in each topological semigroup $Y\in \mathcal C$ containing $X$ as a discrete subsemigroup; $X$ is $projectively$ $\mathcal C$-$closed$ if for each congruence $\approx$ on $X$ the quotient semigroup $X/_\approx$ is $\mathcal C$-closed. A semigroup $X$ is called $chain$-$finite$ if for any infinite set $I\subseteq X$ there are elements $x,y\in I$ such that $xy\notin\{x,y\}$. We prove that a semigroup $X$ is $\mathcal C$-closed if it admits a homomorphism $h:X\to E$ to a chain-finite semilattice $E$ such that for every $e\in E$ the semigroup $h^{-1}(e)$ is $\mathcal C$-closed. Applying this theorem, we prove that a commutative semigroup $X$ is $\mathcal C$-closed if and only if $X$ is periodic, chain-finite, all subgroups of $X$ are bounded, and for any infinite set $A\subseteq X$ the product $AA$ is not a singleton. A commutative semigroup $X$ is projectively $\mathcal C$-closed if and only if $X$ is chain-finite, all subgroups of $X$ are bounded and the union $H(X)$ of all subgroups in $X$ has finite complement $X\setminus H(X)$.
description: 19 pages
Use of deep-sequencing to evaluate the intrinsic heterogeneity of human influenza type A viruses directly in nasal swabs (version 1)
Creators: name: Barbezange, Cyril
name: Blanc, Hervé
name: Isakov, Ofer
name: Enouf, Vincent
name: Shomron, Noam
name: Werf, Sylvie Van Der
name: Vignuzzi, Marco
Publisher: name: F1000Research
Year: 2015

description: Background: In 2009, a new influenza type A virus of H1N1 subtype (H1N1pdm09) entered the human population and caused the first pandemic of the 21st century. After this pandemic wave, it replaced the previously circulating H1N1 virus and, along with the H3N2 subtype, is now responsible for the seasonal influenza epidemics. The genome of influenza type A viruses is composed of 8 single-stranded RNA segments of negative polarity. So far, the evolutionary potential of influenza viruses has been mainly documented by consensus sequencing data. However, RNA virus polymerases are considered to have low fidelity, and a virus thus exists as a cloud of closely related sequences (referred to as a quasispecies), which could influence its fitness and its adaptability. Interest in the quasispecies nature of influenza viruses has only recently increased with the development of next-generation sequencing (NGS) technologies that allow a wider study of the genetic variability.

Conclusions: This study using a significant number of samples for 2 influenza type A viruses that have been circulating in the human population between 2008 and 2012 provides us with a clearer view of the intrinsic heterogeneity of influenza viruses. It will be helpful to better understand the role that this variability might have in the virus’s biology. This will lead to further studies aiming at understanding more precisely how the viral quasispecies nature is involved in the pathogenicity, evolution, and adaptability of influenza viruses.
On the relationship between a giant radio galaxy MSH 05-22 and the ambient large-scale galaxy structure
Creators: name: Subrahmanyan, Ravi
name: Saripalli, Lakshmi
name: Safouris, Vicky
name: Hunstead, Richard W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a comparison of the properties of a giant radio galaxy and the ambient intergalactic medium, whose properties are inferred from the large-scale distribution in galaxies. The double lobes of the radio galaxy MSH 05-22 are giant--1.8 Mpc projected linear size--and interacting with the environment outside the interstellar medium and coronal halo associated with the host galaxy. The radio lobes appear to be relicts and the double structure is asymmetric. We have examined the large-scale structure in the galaxy distribution surrounding the radio source. The host galaxy of MSH 05-22 is associated with a small group that lies close to the boundary of sheet-like and filamentary density enhancements, and adjacent to a void. Assuming that the galaxies trace gas, the asymmetries in the radio morphology in this case study appear related to the anisotropy in the medium. However, the observed overdensities and structure formation models for the heating of the intergalactic medium (IGM) suggest a density-temperature product for the IGM environment that is an order of magnitude below that expected from the properties of the radio source. The discordance suggests that even sources like MSH 05-22, which are observed in the relatively low-density IGM environment associated with the filamentary large-scale structure and have multiple signatures of being relicts, may be overpressured and evolving towards an equilibrium relaxed state with the ambient IGM. Alternately, it is speculated that astrophysical feedback originating in galaxy overdensities observed 1-2 Mpc to the N and NE of MSH 05-22 might be the mechanism for the heating of the ambient IGM gas.
description: 27 pages including 1 table and 13 figures. To appear in ApJ