cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Symmetry of Planar Four-Body Convex Central Configurations
Creators: name: Albouy, Alain
name: Fu, Yanning
name: Sun, Shanzhong
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study the relationship between the masses and the geometric properties of central configurations. We prove that in the planar four-body problem, a convex central configuration is symmetric with respect to one diagonal if and only if the masses of the two particles on the other diagonal are equal. If these two masses are unequal, then the less massive one is closer to the former diagonal. Finally, we extend these results to the case of non-planar central configurations of five particles.
description: 12 pages
Proton deflectometry with in situ x-ray reference for absolute measurement of electromagnetic fields in high-energy-density plasmas
Creators: name: Johnson, C. L.
name: Malko, S.
name: Fox, W.
name: Schaeffer, D. B.
name: Fiksel, G.
name: Adrian, P. J.
name: Sutcliffe, G.
name: Birkel, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We report a technique of proton deflectometry which uses a grid and an in situ reference x-ray grid image for precise measurements of magnetic fields in high-energy density plasmas. A D$^3$He fusion implosion provides a bright point-source of both protons and x-rays, which is split into beamlets by a mesh grid. The protons undergo deflections as they propagate through the plasma region of interest, whereas the x-rays travel along straight lines. The x-ray image therefore provides a zero-deflection reference image. The line-integrated magnetic fields are inferred from the shifts of beamlets between the deflected (proton) and reference (x-ray) images. We developed a system for analysis of this data, including automatic algorithms to find beamlet locations and calculate their deflections from the reference image. The technique is verified in an experiment performed at OMEGA to measure a non-uniform magnetic field in vacuum, then applied to observe the interaction of an expanding plasma plume with the magnetic field.
description: Submitted to Rev. Sci. Instrum. 9 pages, 9 figures
Anomalous Lineshapes and Aging Effects in Two-Dimensional Correlation Spectroscopy
Creators: name: Sanda, Frantisek
name: Mukamel, Shaul
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Multitime correlation functions provide useful probes for the ensembles of trajectories underlying the stochastic dynamics of complex systems. These can be obtained by measuring their optical response to sequences of ultrashort optical pulse. Using the continuous time random walk model for spectral diffusion, we analyze the signatures of anomalous relaxation in two-dimensional four wave mixing signals. Different models which share the same two point joint probability distribution show markedly different lineshapes and may be distinguished. Aging random walks corresponding to waiting time distributions with diverging first moment show dependence of 2D lineshapes on initial observation time, which persist for long times.
Towards the synthesis of cytochalasin B
Creators: name: Ramaswamy, Sowmianarayanan
Publisher: name: University of British Columbia
Year: 2010

description: Chapter I of this thesis deals with the syntheses of the key fragments for use in a proposed synthesis of cytochalasins A, B and F. The chiral precursor 86 of the macrocyclic fragment of the target molecules was prepared in good overall yield from (+)-citronellol using a new reagent which was developed for this purpose. Dienes 87, 88 and 89 were prepared from (E)-2-methyl-2-butenal following literature procedures. The chiral dienophile 124 which was required for an intermolecular Diels-Alder reaction was prepared in good overall yield from L-phenylalanine. A model Diels-Alder reaction between (E,E)-2,4-hexadiene and 124 provided a quantitative yield of the Diels-Alder adduct 126. However, Diels-Alder reactions between 87-89 and 124 were unsuccessful. Substrates 39-41 required for a proposed intramolecular Diels-Alder reaction were prepared. Attempted intramolecular reactions of 39-41 were unsuccessful. [Figure 1] The development and synthetic applications of two ethanedial (glyoxal)-based reagents are discussed in Chapter II. Chapter II-A deals with the preparation and alkylation studies of enamines of 2,2-bis(ethylthio)ethanal (162). This compound was prepared in good yield from ethanedial. Alkylation of the potassium salts of various enamines of 162 followed by in situ hydrolysis provided high yields of the alkylation products. This new reagent was used in the synthesis of compound 86, mentioned above, as well as the physiologically active diolides pyrenophorin and norpyrenophorin. Chapter II-B deals with the preparation and alkylation of 2,2-bis(ethyl-thio)acetonitrile (211). This compound was prepared in high yield from 162. Alkylation of the potassium salt of 211 with various electrophiles and conjugate addition with cyclic a,6-unsaturated ketones provided high yields of the alkylation products. The potential 1- and 2- carbon chain extension capability of this reagent has been demonstrated. [Figure 2] In Chapter III of this thesis a mechanistic investigation of a thermal [l,3]-alkyl shift in compounds 174 and 246-252 is described. An intermolecular, free-radical pathway for the migration was proposed on the [Figure 3] basis of the results of a crossover experiment, a significant positive entropy of activation combined with the lack of a solvent effect. An electron spin resonance signal observed during the rearrangement of 174 was consistent with the proposed radical pathway.
Quantized quasinormal mode theory of coupled lossy and amplifying resonators
Creators: name: Franke, Sebastian
name: Ren, Juanjuan
name: Hughes, Stephen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In the presence of arbitrary three-dimensional linear media with material loss and amplification, we present an electromagnetic field quantization scheme for quasinormal modes (QNMs), extending previous work for lossy media [Franke et al., Phys. Rev. Lett. 122, 213901 (2019)]. Applying a symmetrization transformation, we show two fundamentally different ways for constructing a QNM photon Fock space, including (i) where there is a separate operator basis for both gain and loss, and (ii) where the loss and gain degrees of freedom are combined into a single basis. These QNM operator bases are subsequently used to derive the associated QNM master equations, including the interaction with a quantum emitter, modelled as a quantized two-level system (TLS). We then compare the two different quantization approaches, and also show how commonly used phenomenological methods to quantize light in gain-loss resonators are corrected by several important aspects, such as a loss-induced and gain-induced intermode coupling, which appears through the rigorous treatment of loss and amplification on a dissipative mode level. For specific resonator designs, modelled in a fully consistent way with the classical Maxwell equations with open boundary conditions, we then present numerical results for the quantum parameters and observables of a TLS weakly interacting with the medium-assisted field in a gain-loss microdisk resonator system, and discuss the validity of the different quantization approaches for several gain-loss parameter regimes.
description: 44 pages, 7 figures
Stability and mode analysis of solar coronal loops using thermodynamic irreversible energy principles
Creators: name: Costa, Andrea
name: Gonzalez, Rafael
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the modes and stability of non - isothermal coronal loop models with different intensity values of the equilibrium magnetic field. We use an energy principle obtained via non - equilibrium thermodynamic arguments. The principle is expressed in terms of Hermitian operators and allow to consider together the coupled system of equations: the balance of energy equation and the equation of motion. We determine modes characterized as long - wavelength disturbances that are present in inhomogeneous media. This character of the system introduces additional difficulties for the stability analysis because the inhomogeneous nature of the medium determines the structure of the disturbance, which is no longer sinusoidal. Moreover, another complication is that we obtain a continuous spectrum of stable modes in addition to the discrete one. We obtain a unique unstable mode with a characteristic time that is comparable with the characteristic life-time observed for loops. The feasibility of wave-based and flow-based models is examined.
description: 29 pages 10 figures
Hydrodynamics and beyond in the strongly coupled N=4 plasma
Creators: name: Amado, Irene
name: Hoyos-Badajoz, Carlos
name: Landsteiner, Karl
name: Montero, Sergio
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We continue our investigations on the relation between hydrodynamic and higher quasinormal modes in the AdS black hole background started in arXiv:0710.4458 [hep-th]. As is well known, the quasinormal modes can be interpreted as the poles of the retarded Green functions of the dual N=4 gauge theory at finite temperature. The response to a generic perturbation is determined by the residues of the poles. We compute these residues numerically for energy-momentum and R-charge correlators. We find that the diffusion modes behave in a similar way: at small wavelengths the residues go over into a form of a damped oscillation and therefore these modes decouple at short distances. The sound mode behaves differently: its residue does not decay and at short wavelengths this mode behaves as the higher quasinormal modes. Applications of our findings include the definition of hydrodynamic length and time scales. We also show that the quasinormal modes, including the hydrodynamic diffusion modes, obey causality.
description: 29 pages, 11 figures
title: Connaissances et pratiques de prévention des sages-femmes de Suisse romande sur le cytomégalovirus pendant la grossesse
title: Connaissances et pratiques de prévention des sages-femmes de Suisse romande sur le cytomégalovirus pendant la grossesse
titleType: AlternativeTitle
Creators: name: Rempp, Marine
name: Savoy, Elodie
name: Tilbury, Louise
Publisher: name: Unknown
Year: 0
Subjects: subject: Périnatalité
subject: Sages-femmes
subject: Infectiologie
subject: Cytomégalovirus
subject: Grossesse
subject: hesav TB SF

description: Objectifs : L'objectif de ce travail est de mettre en évidence les caractéristiques des sages-femmes qui influencent leurs connaissances et leurs pratiques de prévention concernant le cytomégalovirus [CMV] en Suisse romande. Méthodologie : Nous avons procédé à une étude observationnelle transversale, entre octobre 2022 et janvier 2023, réalisée à partir d’un questionnaire anonyme en ligne. Notre échantillon se compose de 177 sages-femmes. L'absence de consentement, le fait d’être à la retraite ou de travailler hors de la Suisse romande ont été les seuls critères d’exclusion appliqués. Le critère de jugement principal est un score de connaissances sur le CMV. Les critères de jugement secondaires sont un score de pratiques professionnelles et un score de connaissances des recommandations sur le CMV. Les principaux résultats mettent en évidence des disparités dans les connaissances des sages-femmes en fonction du lieu de pratique et des caractéristiques professionnelles. Les sages-femmes pratiquant en hôpital universitaire, les indépendantes, celles effectuant des suivis de grossesse ou celles participant à des colloques multidisciplinaires de diagnostic prénatal ont des scores de pratique significativement plus élevés. La connaissance des recommandations actuelles est associée à un score de connaissances plus élevé, mais de meilleures connaissances ne sont pas associées à de meilleures pratiques. Conclusion : Une disparité importante dans les connaissances et les pratiques des sages-femmes sur le CMV est retrouvée dans cette étude. Afin d’uniformiser les connaissances et les pratiques, nous recommandons pour la suite de renforcer la formation initiale des sages-femmes, d'étayer l’offre de formations supérieures et de renforcer la participation des sages-femmes à ces dernières.
Local Coarse-grained Approximation to Path Integral Monte Carlo Integration for Fermion Systems
Creators: name: Sun, D. Y.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: An approximate treatment of exchange in finite-temperature path integral Monte Carlo simulations for fermions has been proposed. In this method, some of the fine details of density matrix due to permutations have been smoothed over or averaged out by using the coarse-grained approximation. The practical usefulness of the method is tested for interacting fermions in a three dimensional harmonic well. The results show that, the present method not only reduces the sign fluctuation of the density matrix, but also avoid the fermion system collapsing into boson system at low temperatures. The method is substantiated to be exact when applied to free particles.
title: enVision: An integrated approach towards Semantic Authoring
Creators: name: Groza, Tudor
name: Handschuh, Siegfried
name: Decker, Stefan
Publisher: name: University of Galway
Year: 2006
Subjects: subject: Technical writing
subject: Academic writing
subject: Semantic Web

description: Writing is one of the most common activities of a researcher. And since, the writing process is not only about writing, but also about researching the background of the domain or collecting the necessary references, we propose an integrated writing environment having semantic web technologies as foundation and encapsulating all the necessities involved in this above mentioned process.
Ergodic dynamical systems over the Cartesian power of the ring of p-adic integers
Creators: name: Sopin, Valerii
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: Cryptography and Security (cs.CR)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: G.2.0; E.3
subject: 37P10, 37A05, 94A60

description: For any 1-lipschitz ergodic map $F:\; \mathbb{Z}^{k}_{p} \mapsto \mathbb{Z}^{k}_{p},\;k>1\in\mathbb{N},$ there are 1-lipschitz ergodic map $G:\; \mathbb{Z}_{p} \mapsto \mathbb{Z}_{p}$ and two bijection $H_k$, $T_{k,\;P}$ that $$G = H_{k} \circ T_{k,\;P}\circ F\circ H^{-1}_{k} \text{ and } F = H^{-1}_{k} \circ T_{k,\;P^{-1}}\circ G\circ H_{k}.$$
description: T-Functions of several variables: New Criteria for Transitivity
Supernova Classes and Subclasses
Creators: name: Turatto, M.
name: Benetti, S.
name: Pastorello, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The discovery of many objects with unprecedented, amazing observational characteristics caused the last decade to be the most prolific period for the supernova research. Many of these new supernovae are transitional objects between existing classes, others well enter within the defined classes, but still show unique properties. This makes the traditional classification scheme inadequate to take into account the overall SN variety and, consequently, requires the introduction of new subclasses.
description: 10 pages, 2 figure, review for "Supernova 1987A: 20 Years After: Supernovae and Gamma-Ray Bursters" AIP, New York, eds. S. Immler, K.W. Weiler, and R. McCray
БИР НЕЧА ЖИНОЯТ СОДИР ЭТИШ ТУШУНЧАСИ ВА УНИНГ ЎЗИГА ХОС БЕЛГИЛАРИ
Creators: name: Шарипова, Наргиза
Publisher: name: Zenodo
Year: 2023

description: Мазкур мақолада бир неча жиноят содир этиш тушунчаси ва унинг ўзига хос белгиларига доир масалалар таҳлил этилган. Шунингдек, мақолада муаллиф Жиноят ҳуқуқидаги “бир қанча жиноятлар” ва “бир неча жиноятлар” тушунчаларига ҳам тўхталиб, амалдаги Жиноят кодексида ушбу тушунчаларнинг аниқ бевосита таърифлари келтирилмаган ва ушбу тушунчалар бир хил маънодек, кўринса-да, улар мустақил тушунчалар эакнлиги борасида таъкидлаб, ўз таклиф ва тавсияларини бериб ўтган.
title: Planning the last-mile: Improving urban freight delivery using cyclelogistics
Creators: name: Dixon, Dennis Aaron
Publisher: name: Electronic version published by Vancouver Island University
Year: 2019
Subjects: subject: Freight and freightage
subject: Freight forwarders
subject: Urban transportation
subject: Cycling
subject: Logistics
subject: Materials handling
subject: Commercial cycling businesses
subject: Bicycle messengers
subject: Cyclelogistics
subject: Cargo bicycles

description: The purpose of this study is to inform urban planners on innovative methods for last-mile freight movement within dense urban environments. An online survey was distributed to employees of logistic service providers to capture insights from their lived-experiences while on the job, a case-study review of existing policies and a mapping analysis supplement the research. The findings from this project suggest that innovations for last-mile delivery are available and tend to be widely known, however widespread uptake of these innovations remain negligible within the field site. Cyclelogistics remains an option that could be used in many locales. This study provides guidance to municipalities in crafting last-mile urban freight solutions.
Noncommutative BTZ Black Hole in Polar Coordinates
Creators: name: Chang-Young, Ee
name: Lee, Daeho
name: Lee, Youngone
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Based on the equivalence between the three dimensional gravity and the Chern-Simons theory, we obtain a noncommutative BTZ black hole solution as a solution of $U(1,1)\times U(1,1)$ noncommutative Chern-Simons theory using the Seiberg-Witten map. The Seiberg-Witten map is carried out in a noncommutative polar coordinates whose commutation relation is equivalent to the usual canonical commutation relation in the rectangular coordinates up to first order in the noncommutativity parameter $θ$. The solution exhibits a characteristic of noncommutative polar coordinates in such a way that the apparent horizon and the Killing horizon coincide only in the non-rotating limit showing the effect of noncommutativity between the radial and angular coordinates.
description: 14 pages, V2: minor changes, v3: reduced for clarification, a reference added
LAPNet: Non-rigid Registration derived in k-space for Magnetic Resonance Imaging
Creators: name: Küstner, Thomas
name: Pan, Jiazhen
name: Qi, Haikun
name: Cruz, Gastao
name: Gilliam, Christopher
name: Blu, Thierry
name: Yang, Bin
name: Gatidis, Sergios
name: Botnar, René
name: Prieto, Claudia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Physiological motion, such as cardiac and respiratory motion, during Magnetic Resonance (MR) image acquisition can cause image artifacts. Motion correction techniques have been proposed to compensate for these types of motion during thoracic scans, relying on accurate motion estimation from undersampled motion-resolved reconstruction. A particular interest and challenge lie in the derivation of reliable non-rigid motion fields from the undersampled motion-resolved data. Motion estimation is usually formulated in image space via diffusion, parametric-spline, or optical flow methods. However, image-based registration can be impaired by remaining aliasing artifacts due to the undersampled motion-resolved reconstruction. In this work, we describe a formalism to perform non-rigid registration directly in the sampled Fourier space, i.e. k-space. We propose a deep-learning based approach to perform fast and accurate non-rigid registration from the undersampled k-space data. The basic working principle originates from the Local All-Pass (LAP) technique, a recently introduced optical flow-based registration. The proposed LAPNet is compared against traditional and deep learning image-based registrations and tested on fully-sampled and highly-accelerated (with two undersampling strategies) 3D respiratory motion-resolved MR images in a cohort of 40 patients with suspected liver or lung metastases and 25 healthy subjects. The proposed LAPNet provided consistent and superior performance to image-based approaches throughout different sampling trajectories and acceleration factors.
Extended Symmetries in Supergravity: the Semi-simple Case
Creators: name: Kleinschmidt, Axel
name: Roest, Diederik
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The bosonic sector of various supergravity theories reduces to a homogeneous space G/H in three dimensions. The corresponding algebras g are simple for (half-)maximal supergravity, but can be semi-simple for other theories. We extend the existing literature on the Kac-Moody extensions of simple Lie algebras to the semi-simple case. Furthermore, we argue that for N=2 supergravity the simple algebras have to be augmented with an su(2) factor.
description: 36 pages. v2: Added references. Published version
Magnetic and charge transport properties of the Na-based Os oxide pyrochlore
Creators: name: Shi, Y. G.
name: Belik, A. A.
name: Tachibana, M.
name: Tanaka, M.
name: Katsuya, Y.
name: Kobayashi, K.
name: Yamaura, K.
name: Takayama-Muromachi, E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Na-based osmium oxide pyrochlore was synthesized for the first time by an ion-exchange method. KOs2O6 was used as a host compound. Elelectron probe micro-analysis, synchrotron x-ray diffraction analysis, and thermo-gravimetric analysis confirmed its structure not as the beta-type but as the defect-type pyrochlore. The composition was identified as Na1.4Os2O6.H2O. Electrical resistivity, heat capacity, and magnetization measurements of the polycrystalline Na1.4Os2O6.H2O clarified absence of superconductivity above 2 K, being in contrast to what were found for the beta-pyrochlore AOs2O6 (A = Cs, Rb, K). Sommerfeld coefficient of 22 mJ K-2 mol-1 of Na1.4Os2O6.H2O was smallest among those of AOs2O6. A magnetic anomaly at ~57 K and possible associated magnetoresistance (+3.7 % at 2 K in 70 kOe) were found.
description: 19 pages, 6 figures, Submitted to PRB
A Friend Recommendation System using Semantic Based KNN Algorithm
Creators: name: C, Srikantaiah K
name: Mewara, Salony
name: Goyal, Sneha
name: S, Subhiksha
Publisher: name: arXiv
Year: 2021
Subjects: subject: Databases (cs.DB)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Social networking has become a major part of all our lives and we depend on it for day to day purposes. It is a medium that is used by people all around the world even in the smallest of towns. Its main purpose is to promote and aid communication between people. Social networks, such as Facebook, Twitter etc. were created for the sole purpose of helping individuals communicate about anything with each other. These networks are becoming an important and also contemporary method to make friends from any part of this world. These new friends can communicate through any form of social media. Recommendation systems exist in all the social networks which aid users to find new friends and unite to more people and form associations and alliances with people.
The burden of financial costs of healthcare for people with multimorbidity
Creators: name: Larkin, James
Publisher: name: Royal College of Surgeons in Ireland
Year: 2023
Subjects: classificationCode: 420699
subject: Public health not elsewhere classified
classificationCode: 420305
subject: Health and community services
classificationCode: 380108
subject: Health economics

description: Multimorbidity (two or more chronic conditions) is associated with increased out-of-pocket healthcare expenditure; however, there is insufficient research on multimorbidity’s financial impact on individuals. This thesis researched the financial impact of living with multimorbidity: the lived experience of this, levels of out-of-pocket healthcare spending, and how people with multimorbidity prioritise healthcare when facing affordability challenges. The thesis researched community-dwelling adults with multimorbidity. A systematic review of qualitative research on multimorbidity and financial burden was conducted by searching databases and grey literature. A cross-sectional study examined the impact of multimorbidity on out-of-pocket healthcare expenditure using a generalised linear model. A choice experiment was conducted with an online sample, examining how people with multimorbidity prioritise healthcare when faced with affordability challenges. The systematic review of qualitative research thematically synthesised 46 studies. Four themes were generated: the high costs people with multimorbidity experience, coping strategies to manage costs, negative effects of these areas on well-being, and how health insurance and government supports determine cost manageability. The cross-sectional study examining multimorbidity’s impact on out-of-pocket healthcare expenditure included 5,898 participants. Among participants who had any out-of-pocket healthcare expenditure, individuals with multimorbidity spent more on average annually (€806.8 for two conditions, €885.8 for three or more conditions), than individuals with no conditions (€580.3). A strong positive association was found between number of conditions and out-of-pocket healthcare expenditure. The choice experiment included 962 participants and found they were most likely to report prioritising their medicines and least likely to prioritise ‘other healthcare (hospital visits, specialist doctors, etc.)’. Also, when facing financial constraints, participants with multimorbidity reported prioritising one condition. This thesis shows the burden healthcare costs place on people with multimorbidity. This financial burden can be explored and addressed using cost-of-care conversations and can be mitigated by targeted healthcare entitlements.
title: Web of Data Plumbing - Lowering the Barriers to Entry
Creators: name: Umbrich, Jürgen
name: Hastrup, Tuukka
name: Hausenblas, Michael
Publisher: name: University of Galway
Year: 2009
Subjects: subject: Sindice
subject: DERI

description: Publishing and consuming content on the Web of Data often requires considerable expertise in the underlying technologies, as the expected services to achieve this are either not packaged in a simple and accessible manner, or are simply lacking. In this poster, we address selected issues by briefly introducing the following essential Web of Data services de- signed to lower the entry-barrier for Web developers: (i) a multi-ping service, (ii) a meta search service, and (iii) a universal discovery service.
Cosmological Particle Production and Pairwise Hotspots on the CMB
Creators: name: Kim, Jeong Han
name: Kumar, Soubhik
name: Martin, Adam
name: Tsai, Yuhsin
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Heavy particles with masses much bigger than the inflationary Hubble scale $H_*$, can get non-adiabatically pair produced during inflation through their couplings to the inflaton. If such couplings give rise to time-dependent masses for the heavy particles, then following their production, the heavy particles modify the curvature perturbation around their locations in a time-dependent and scale non-invariant manner. This results into a non-trivial spatial profile of the curvature perturbation that is preserved on superhorizon scales and eventually generates localized hot or cold spots on the CMB. We explore this phenomenon by studying the inflationary production of heavy scalars and derive the final temperature profile of the spots on the CMB by taking into account the subhorizon evolution, focusing in particular on the parameter space where pairwise hot spots (PHS) arise. When the heavy scalar has an $\mathcal{O}(1)$ coupling to the inflaton, we show that for an idealized situation where the dominant background to the PHS signal comes from the standard CMB fluctuations themselves, a simple position space search based on applying a temperature cut, can be sensitive to heavy particle masses $M_0/H_*\sim\mathcal{O}(100)$. The corresponding PHS signal also modifies the CMB power spectra and bispectra, although the corrections are below (outside) the sensitivity of current measurements (searches).
description: 25+5 pages, 9+2 figures
Photoelectron spectroscopic studies of unstable molecular species
Creators: name: Lau, Woon Ming
Publisher: name: University of British Columbia
Year: 2010

description: A photoelectron (PE) spectrometer has been modified to study unstable molecules. Reconstruction of the ionization chamber has made the ionization region more easily accessible, and a quadrupole mass spectrometer has been added in order to provide mass spectral identification data under the same conditions as the PE experiment. The system is controlled by a LSI 11/03 microcomputer with suitable interfacing hardware. A real-time operating system program has been developed for data handling. Light sources such as the HLc (Hydrogen Lyman a line, l0.2eV) and HL[sub=αβƴ] (a mixture of Hydrogen Lyman α, β and ƴ lines) radiations were used to reduce ion-fragmentation. Pure S₄N₄, S₄N₂, S₃N₃ and S₂N₂ were synthesized and studied with this system. The interrelationship between the gas phase reactivities of these compounds has been established. The study of CH₃NO, its trans and cis dimers, and its isomer, CH₂NOH, has clarified some mistakes in species identification in previous PE spectroscopic work on CH₃NO and its dimers. These two studies illustrate our ability to identify unstable species even in a very complex mixture with this system. A cryopump was constructed and may be positioned close to the ionization region opposite to the sample inlet, which may be a fine nozzle. This fast pumping nozzle system has been used to produce nearly pure N₂0, and a charge-transfer complex (CH₃)₂0-BF₃, and excellent PE spectra of these species were obtained. A library of computer programs has been established which provides a wide variety of quantum mechanical computations applicable to PE band assignments. These programs, such as CNDO/2, MINDO/3, MNDO, HAM/3, GAUSSIAN 70 and 76, and RSPT (for perturbation corrections to Koopmans' theorem), were used throughout this work and their accuracy and efficiency assessed. Koopmans' theorem has been shown to break down if applied to the ionization of CH₃NO and N₂O₄. Moreover, shake-up processes in the Hel region have been studied for these two molecules and S₄N₂. Several of the molecules, such as S₄N₂, S₃N₃ and (CH₃)₂0-BF₃, have not been investigated by PE spectroscopy before.
Magnetized strange quark matter and magnetized strange quark stars
Creators: name: Felipe, R. Gonzalez
name: Martinez, A. Perez
name: Rojas, H. Perez
name: Orsaria, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Strange quark matter could be found in the core of neutron stars or forming strange quark stars. As is well known, these astrophysical objects are endowed with strong magnetic fields which affect the microscopic properties of matter and modify the macroscopic properties of the system. In this paper we study the role of a strong magnetic field in the thermodynamical properties of a magnetized degenerate strange quark gas, taking into account beta-equilibrium and charge neutrality. Quarks and electrons interact with the magnetic field via their electric charges and anomalous magnetic moments. In contrast to the magnetic field value of 10^19 G, obtained when anomalous magnetic moments are not taken into account, we find the upper bound B < 8.6 x 10^17 G, for the stability of the system. A phase transition could be hidden for fields greater than this value.
description: 9 pages, 9 figures
Game-environment feedback dynamics in growing population: Effect of finite carrying capacity
Creators: name: Bairagya, Joy Das
name: Mondal, Samrat Sohel
name: Chowdhury, Debashish
name: Chakraborty, Sagar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Biological Physics (physics.bio-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: The tragedy of the commons (TOC) is an unfortunate situation where a shared resource is exhausted due to uncontrolled exploitation by the selfish individuals of a population. Recently, the paradigmatic replicator equation has been used in conjunction with a phenomenological equation for the state of the shared resource to gain insight into the influence of the games on the TOC. The replicator equation, by construction, models a fixed infinite population undergoing microevolution. Thus, it is unable to capture any effect of the population growth and the carrying capacity of the population although the TOC is expected to be dependent on the size of the population. Therefore, in this paper, we present a mathematical framework that incorporates the density dependent payoffs and the logistic growth of the population in the eco-evolutionary dynamics modelling the game-resource feedback. We discover a bistability in the dynamics: a finite carrying capacity can either avert or cause the TOC depending on the initial states of the resource and the initial fraction of cooperators. In fact, depending on the type of strategic game-theoretic interaction, a finite carrying capacity can either avert or cause the TOC when it is exactly the opposite for the corresponding case with infinite carrying capacity.
description: 12 pages, 5 figures, accepted in Physical Review E
Automatically Restructuring Practice Guidelines using the GEM DTD
Creators: name: Bouffier, Amanda
name: Poibeau, Thierry
Publisher: name: arXiv
Year: 2007
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: This paper describes a system capable of semi-automatically filling an XML template from free texts in the clinical domain (practice guidelines). The XML template includes semantic information not explicitly encoded in the text (pairs of conditions and actions/recommendations). Therefore, there is a need to compute the exact scope of conditions over text sequences expressing the required actions. We present a system developed for this task. We show that it yields good performance when applied to the analysis of French practice guidelines.
Active clustering for labeling training data
Creators: name: Lutz, Quentin
name: de Panafieu, Élie
name: Scott, Alex
name: Stein, Maya
Publisher: name: arXiv
Year: 2021
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Artificial Intelligence (cs.AI)
subject: Discrete Mathematics (cs.DM)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Gathering training data is a key step of any supervised learning task, and it is both critical and expensive. Critical, because the quantity and quality of the training data has a high impact on the performance of the learned function. Expensive, because most practical cases rely on humans-in-the-loop to label the data. The process of determining the correct labels is much more expensive than comparing two items to see whether they belong to the same class. Thus motivated, we propose a setting for training data gathering where the human experts perform the comparatively cheap task of answering pairwise queries, and the computer groups the items into classes (which can be labeled cheaply at the very end of the process). Given the items, we consider two random models for the classes: one where the set partition they form is drawn uniformly, the other one where each item chooses its class independently following a fixed distribution. In the first model, we characterize the algorithms that minimize the average number of queries required to cluster the items and analyze their complexity. In the second model, we analyze a specific algorithm family, propose as a conjecture that they reach the minimum average number of queries and compare their performance to a random approach. We also propose solutions to handle errors or inconsistencies in the experts' answers.
description: Accepted at Neurips 2021. The main part is 14 pages long, the rest is an appendix containing the long version of the proofs
ВЫБОР ПАРАМЕТРОВ МАГНИТНОГО ПОЛЯ И ВРЕМЕНИ ЭКСПОЗИЦИИ ДЛЯ ПРЕДПОСЕВНОЙ ОБРАБОТКИ СЕМЯН КУЛЬТУРНЫХ РАСТЕНИЙ С ПОМОЩЬЮ ПОРТАТИВНОЙ МАГНИТОПЛАЗМЕННОЙ УСТАНОВКИ
Creators: name: Васильева Т.И.
name: Пурыгин П.П.
name: Путько В.Ф.
Publisher: name: Кронос: естественные и технические науки
Year: 2020
Subjects: КОМПЛЕКС ФИЗИЧЕСКИХ ФАКТОРОВ
УРОЖАЙНОСТЬ
ПРЕДПОСЕВНАЯ ОБРАБОТКА
МАГНИТНОЕ ПОЛЕ
ВРЕМЯ ЭКСПОЗИЦИИ
COMPLEX OF PHYSICAL FACTORS
PRODUCTIVITY
PRE-SEEDING TREATMENT
MAGNETIC FIELD
EXPOSURE TIME

description: В статье представлен эффективный и экологически безопасный метод предпосевной обработки семян сельскохозяйственных растений магнитным полем, озоном и ультрафиолетовым излучением с помощью магнито-плазменной установки. Изучено влияние различных параметров магнитного поля и времени экспозиции на семена некоторых культурных растений и выбраны оптимальные параметры воздействия в зависимости от размера семян. Результаты исследований вносят определенный вклад в развитие и совершенствование методов предпосевной обработки семян, что позволит значительно повысить продуктивность урожая сельскохозяйственных культур.
On the implications of a dilaton in gauge theory
Creators: name: Chabab, Mohamed
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Some recent work on the implications of a dilaton in 4d gauge theories are revisited. In part I of this paper we see how an effective dilaton coupling to gauge kinetic term provides a simple attractive mechanism to generate confinement. In particular, we put emphasis on the derivation of confining analytical solutions and look into the problem how dilaton degrees of freedom modify Coulom potential and when a confining phase occurs. In part II, we solve the semi-relativistic wave equation, for Dick interquark potential using the Shifted l-expansion technique (SLET) in the heavy quarkonium sector. The results of this phenomenological analysis proves that these effective theories can be relevant to model quark confinement and may shed some light on confinement mechanism.
description: 8 pages. Talk given at CTP Symposium on Supersymmetry at LHC: Theoretical and Experimental Prospectives, Cairo, Egypt, 11-14 Mar 2007
Note Illustrative della Carta geologica d'Italia alla scala 1:50.000, F. 597-610 Cefalù-Castelbuono, Servizio Geologico d'Italia - ISPRA
Creators: name: Carbone, S.
name: Grasso, M.
name: Lentini, F.
name: Maniscalco, R.
Publisher: name: INFN Open Access Repository
Year: 2023
Subjects: carta geologica, Cefalù, Castelbuono, Sicilia, Regione Siciliana, CARG, stratigrafia, tettonica, sottosuolo, geological map, stratigraphy, tectonics, subsurface

description: Note illustrative redatte per il Foglio geologico n.  597-610 Cefalù-Castelbuono della Carta Geologica d'Italia alla scala 1:50.000. 200 pp.
Ecological, silicultural and management characteristics of a valonia oak silvopastoral system in W. Greece
Creators: name: Pantera, A.
name: Mosquera-Losada, R.
name: Papadopoulos A
Publisher: name: Zenodo
Year: 2019
Subjects: agroforestry
Quercus ithaburensis subsp. macrolepis
ecosystem services
management
forest

description: The valonia oak forest in Western Greece is one of the biggest and oldest in the Balkan
Peninsula. It is mostly used nowadays for livestock raising of freely grazing sheep and less
goats, rending it an important silvopastoral system. Under the framework of the AGFORWARD
project, we investigated this system.
Updated constraints on new physics in rare charm decays
Creators: name: Fajfer, Svjetlana
name: Kosnik, Nejc
name: Prelovsek, Sasa
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Motivated by recent experimental results on charm physics we investigate implications of the updated constraints of new physics in rare charm meson decays. We first reconsider effects of the MSSM in $c\to u γ$ constrained by the recent experimental evidence on $Δm_D$ and find, that due to the dominance of long distance physics, $D \to V γ$ decay rates cannot be modified by MSSM contributions. Then we consider effects of the extra heavy up vector-like quark models on the decay spectrum of $D^+ \to π^+ l^+ l^-$ and $D_s^+ \to K^+ l^+ l^-$ decays. We find a possibility for the tiny increase of the differential decay rate in the region of large dilepton mass. The R-parity violating supersymmetric model can also modify short distance dynamics in $c \to u l^+ l^-$ decays. We constrain relevant parameters using current upper bound on the $D^+ \to π^+ l^+ l^-$ decay rate and investigate impact of that constraint on the $D_s^+ \to K^+ l^+ l^-$ differential decay dilepton distribution. Present bounds still allow small modification of the standard model differential decay rate distribution.
description: 15 pages, 4 figures
Interaction of magnons with plasmons in a system of antiferromagnetic insulators coupled to a superconductor microwave cavity through the interfacial exchange interaction
Creators: name: Mal'shukov, A. G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A superconductor can interact with magnets through the magnetic field which is induced by the supercurrent. However, this interaction is rather weak and requires relatively large magnets to reach a sizable hybridization of microwave electromagnetic modes with magnons. The size of the device can be drastically reduced by means of the large interfacial exchange interaction between spins in a magnet and a superconductor. In the spin-orbit coupled superconductor this interaction can be transmitted to the s-wave condensate through a mixing of triplet and singlet Cooper pairs. In this paper we theoretically consider thin antiferromagnetic films, which make a spin compensated contact to a superconducting wire, which forms a cavity for Mooij-Schön plasma waves. The effective Lagrangian is derived where the interaction of these waves with magnons is taken into account. Frequencies of hybrid magnon-plasmon modes are calculated. A system of two micromagnets placed far apart are also considered and their mutual coupling through the cavity mode is calculated.
description: 9 pages, 1 figure
Rabies: Understanding and Control Strategies
Creators: name: Pooja Rani and Annu Yadav
Publisher: name: Bio Vet Innovator Magazine
Year: 2024

description: Rabies is an acute, progressive viral encephalomyelitis that primarily affects carnivores and bats, but any mammal can be infected. It is a preventable yet deadly viral infection, usually transmitted through bites, scratches, or saliva of infected animals, particularly domestic dogs, which are the main source of human exposure (WHO, 2013).
Additional file 2: of Nursing and midwifery research activity in Arab countries from 1950 to 2017
Creators: name: Sweileh, Waleed
name: Huijer, Huda
name: Al-Jabi, Samah
name: SaâEd Zyoud
name: Ansam Sawalha
Publisher: name: Figshare
Year: 2019
Subjects: Biochemistry
Biotechnology
Marine Biology
Cancer
Science Policy

description: List of active researchers used to test validity of the search strategy. Supplement 2 included a list of active authors with their research output obtained by two different methods was compared to test for the validity of the search strategy. (DOC 34 kb)
New findings for the old problem: Exact solutions for domain walls in coupled real Ginzburg-Landau equations
Creators: name: Malomed, Boris
Publisher: name: arXiv
Year: 2021
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: This work reports new exact solutions for domain-wall (DW) states produced by a system of coupled real Ginzburg-Landau (GL) equations which model patterns in thermal convection, optics, and Bose-Einstein condensates (BECs). An exact solution for symmetric DW was known for a single value of the cross-interaction coefficient, G = 3 (defined so that its self-interaction counterpart is 1). Here an exact asymmetric DW is obtained for the system in which the diffusion term is absent in one component. It exists for all G > 1. Also produced is an exact solution for DW in the symmetric real-GL system which includes linear coupling. In addition, an effect of a trapping potential on the DW is considered, which is relevant to the case of BEC. In a system of three GL equations, an exact solution is obtained for a composite state including a two-component DW and a localized state in the third component. Bifurcations which create two lowest composite states are identified too. Lastly, exact solutions are found for the system of real GL equations for counterpropagating waves, which represent a sink or source of the waves, as well as for a system of three equations which includes a standing localized component.
description: Physics Letters A, in press
ИЗНОС ДВИГАТЕЛЕЙ В ПРОЦЕССЕ ТЕХНОЛОГИЧЕСКОЙ И ЭКСПЛУАТАЦИОННОЙ ОБКАТКИ
Creators: name: Королев А.Е.
Publisher: name: Кронос: естественные и технические науки
Year: 2020
Subjects: ДВИГАТЕЛЬ
РЕМОНТ
ОБКАТКА ТЕХНОЛОГИЧЕСКАЯ И ЭКСПЛУАТАЦИОННАЯ
ИЗНОС
СТАБИЛИЗАЦИЯ ПАРАМЕТРОВ
ENGINE
REPAIR
RUNNING-IN TECHNOLOGICAL AND EXPLOITATIVE
WEAR
STABILIZATION OF PARAMETERS

description: В статье рассматриваются закономерности изнашивания двигателей при ремонте и в эксплуатации. Диагностирование по параметрам моторного масла имеет высокую информативность и оперативность, дает возможность контроля и прогнозирования технического состояния двигателя, а также обеспечивает надёжное функционирование всех его систем. Проведены производственные и эксплуатационные испытания дизелей ЯМЗ-238НБ. Для изучения элементного состава масла использован спектральный анализ. Показана динамика изнашивания двигателей по времени их испытания. Установлено влияние концентрации механических примесей в масле и литровой мощности двигателей на исследуемый процесс. Выявлена продолжительность стабилизации мощности механических потерь в процессе работы дизелей.
ИЗУЧЕНИЕ МИНИМАЛЬНОГО СТОКА МАЛЫХ И СРЕДНИХ РЕК КАК ЗНАЧИМОГО ГИДРОЛОГИЧЕСКОГО ПОКАЗАТЕЛЯ (НА ПРИМЕРЕ Р.ЧЕРМАСАН)
Creators: name: Лешан Ирина Юрьевна
Publisher: name: Кронос: естественные и технические науки
Year: 2020
Subjects: МИНИМАЛЬНЫЙ СТОК
ЧЕРМАСАН
МЕТОД НАРАСТАЮЩИХ СУММ
5-ТИ ЛЕТНИЕ СКОЛЬЗЯЩИЕ СРЕДНИХ СУТОЧНЫХ И СРЕДНИХ 30-СУТОЧНЫХ МИНИМАЛЬНЫХ РАСХОДОВ
MINIMUM RUNOFF
CHERMASAN
5-YEAR MOVING AVERAGES OF DAILY AND 30-DAY MINIMUM EXPENSES
THE METHOD OF ACCRUAL

description: В статье рассмотрена динамика изменения минимального стока р.Чермасан в летне-осеннюю и зимнюю межень при использовании метода 5-ти летних скользящих средних суточных минимальных расходов, 5-ти летних скользящих средних 30-суточных минимальных расходов воды и метода нарастающих сумм.