cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Measurements of top-quark pair differential cross-sections in the $eμ$ channel in $pp$ collisions at $\sqrt{s} = 13$ TeV using the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: This article presents measurements of $t\bar{t}$ differential cross-sections in a fiducial phase-space region, using an integrated luminosity of 3.2 fb$^{-1}$ of proton--proton data at a centre-of-mass energy of $\sqrt{s} = 13$ TeV recorded by the ATLAS experiment at the LHC in 2015. Differential cross-sections are measured as a function of the transverse momentum and absolute rapidity of the top quark, and of the transverse momentum, absolute rapidity and invariant mass of the $t\bar{t}$ system. The $t\bar{t}$ events are selected by requiring one electron and one muon of opposite electric charge, and at least two jets, one of which must be tagged as containing a $b$-hadron. The measured differential cross-sections are compared to predictions of next-to-leading order generators matched to parton showers and the measurements are found to be consistent with all models within the experimental uncertainties with the exception of the POWHEG-Box + HERWIG++ predictions, which differ significantly from the data in both the transverse momentum of the top quark and the mass of the $t\bar{t}$ system.
description: 43 pages in total, author list starting page 27, 5 figures, 5 tables, published version, all figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2016-04/
Finiteness theorems for K3 surfaces and abelian varieties of CM type
Creators: name: Orr, Martin
name: Skorobogatov, Alexei N.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 11G15, 14J28, 14F22

description: We study abelian varieties and K3 surfaces with complex multiplication defined over number fields of fixed degree. We show that these varieties fall into finitely many isomorphism classes over an algebraic closure of the field of rational numbers. As an application we confirm finiteness conjectures of Shafarevich and Coleman in the CM case. In addition we prove the uniform boundedness of the Galois invariant subgroup of the geometric Brauer group for forms of a smooth projective variety satisfying the integral Mumford--Tate conjecture. When applied to K3 surfaces, this affirms a conjecture of Várilly-Alvarado in the CM case.
description: 25 pages, to appear in Compositio Math
Ερωτηματολόγιο Έκβασης - Θεραπευτική Συμμαχία (OQ45.2-TA)
Creators: name: Rigos, Markos
Publisher: name: Zenodo
Year: 2022
Subjects: Ψυχοθεραπευτική εκβαση
Eρωτηματολόγιο έκβασης
Ψυχοθεραπευτική συμμαχία
Αποτελεσματικότητα
Outcome measures
Psychotherapy effectiveness
OQ45.2-TA

description: This is OQ45.2-TA as officially translated and culturally adapted in the Greek language.
description: OQ45.2-TA is a copyrighted commercial product. The Greek version will undergo further psychometric scrutiny and for this purpose collaborators are currently being sought. The questionnaire's translation and cultural adaptation supporting material are deposited here: https://doi.org/10.5281/zenodo.5752346
Flow Navigation by Smart Microswimmers via Reinforcement Learning
Creators: name: Colabrese, Simona
name: Gustavsson, Kristian
name: Celani, Antonio
name: Biferale, Luca
Publisher: name: arXiv
Year: 2017
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Machine Learning (cs.LG)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Smart active particles can acquire some limited knowledge of the fluid environment from simple mechanical cues and exert a control on their preferred steering direction. Their goal is to learn the best way to navigate by exploiting the underlying flow whenever possible. As an example, we focus our attention on smart gravitactic swimmers. These are active particles whose task is to reach the highest altitude within some time horizon, given the constraints enforced by fluid mechanics. By means of numerical experiments, we show that swimmers indeed learn nearly optimal strategies just by experience. A reinforcement learning algorithm allows particles to learn effective strategies even in difficult situations when, in the absence of control, they would end up being trapped by flow structures. These strategies are highly nontrivial and cannot be easily guessed in advance. This Letter illustrates the potential of reinforcement learning algorithms to model adaptive behavior in complex flows and paves the way towards the engineering of smart microswimmers that solve difficult navigation problems.
description: Published on Physical Review Letters (April 12, 2017)
Zum Wissenschaftsverständnis der Verhaltenstherapiele
Creators: name: Jacobi, Frank
Publisher: name: figshare
Year: 2022
Subjects: Clinical Psychology

description: Die Verhaltenstherapie ist eine besonders Forschungs-affine Disziplin, die sich seit über sieben Jahrzehnten nachhaltig ausdifferenziert und dabei stets eine explizit wissenschaftliche Haltung pflegt. Hier dargelegt werden Aspekte der wissenschaftlichen Haltung, der Evidenzbasierung verhaltenstherapeutischer Interventionen, dem Verhältnis von Verhaltenstherapie und Psychotherapie-Integration und zum Voranschreiten der Methodenvielfalt in der Forschung.
 Im Dokument finden sich neben dem Beitrag zur Verhaltenstherapie auch Beiträge anderer Psychotherapie-"Schulen" (Humanistische, Systemische, Psychodynamische).
 [VPP aktuell, 9/2020; www.vpp-aktuell.de]
Weyl versus Conformal Invariance in Quantum Field Theory
Creators: name: Farnsworth, Kara
name: Luty, Markus A.
name: Prilepina, Valentina
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We argue that conformal invariance in flat spacetime implies Weyl invariance in a general curved background metric for all unitary theories in spacetime dimensions $d \leq 10$. We also study possible curvature corrections to the Weyl transformations of operators, and show that these are absent for operators of sufficiently low dimensionality and spin. We find possible `anomalous' Weyl transformations proportional to the Weyl (Cotton) tensor for $d > 3$ ($d = 3$). The arguments are based on algebraic consistency conditions similar to the Wess-Zumino consistency conditions that classify possible local anomalies. The arguments can be straightforwardly extended to larger operator dimensions and higher $d$ with additional algebraic complexity.
description: 30 pages, v3: Version accepted to JHEP, clarifications added and typos fixed
IceCube and HAWC constraints on very-high-energy emission from the Fermi bubbles
Creators: name: Fang, Ke
name: Su, Meng
name: Linden, Tim
name: Murase, Kohta
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The nature of the $γ$-ray emission from the \emph{Fermi} bubbles is unknown. Both hadronic and leptonic models have been formulated to explain the peculiar $γ$-ray signal observed by the Fermi-LAT between 0.1-500~GeV. If this emission continues above $\sim$30~TeV, hadronic models of the \emph{Fermi} bubbles would provide a significant contribution to the high-energy neutrino flux detected by the IceCube observatory. Even in models where leptonic $γ$-rays produce the \emph{Fermi} bubbles flux at GeV energies, a hadronic component may be observable at very high energies. The combination of IceCube and HAWC measurements have the ability to distinguish these scenarios through a comparison of the neutrino and $γ$-ray fluxes at a similar energy scale. We examine the most recent four-year dataset produced by the IceCube collaboration and find no evidence for neutrino emission originating from the \emph{Fermi} bubbles. In particular, we find that previously suggested excesses are consistent with the diffuse astrophysical background with a p-value of 0.22 (0.05 in an extreme scenario that all the IceCube events that overlap with the bubbles come from them). Moreover, we show that existing and upcoming HAWC observations provide independent constraints on any neutrino emission from the \emph{Fermi} bubbles, due to the close correlation between the $γ$-ray and neutrino fluxes in hadronic interactions. The combination of these results disfavors a significant contribution from the \emph{Fermi} bubbles to the IceCube neutrino flux.
description: 9 pages, 4 figures, to appear in PRD
Three-dimensional slow Rossby waves in rotating spherical density stratified convection
Creators: name: Elperin, T.
name: Kleeorin, N.
name: Rogachevskii, I.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: We develop a theory of three-dimensional slow Rossby waves in rotating spherical density stratified convection. The Rossby waves with frequencies which are much smaller than the rotating frequency, are excited by a non-axisymmetric instability from the equilibrium based on the developed convection. These waves interact with the inertial waves and the density stratified convection. The density stratification is taken into account using the anelastic approximation for very low-Mach-number flows. We study long-term planetary Rossby waves with periods which are larger than two years. We suggest that these waves are related to the Southern Oscillation and El Niño. The El Niño is an irregularly periodical variation in winds and sea surface temperatures over the tropical Pacific Ocean, while the Southern Oscillation is an oscillation in surface air pressure between the tropical eastern and the western Pacific Ocean. The strength of the Southern Oscillation is characterised by the Southern Oscillation Index (SOI). The developed theory is applied for the interpretation of the observed periods of the SOI. This study demonstrates a good agreement between the theoretical predictions and the observations.
description: 7 pages, 4 figures, REVTEX4-1, revised
The Smirnov class for spaces with the complete Pick property
Creators: name: Aleman, Alexandru
name: Hartz, Michael
name: McCarthy, John E.
name: Richter, Stefan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Functional Analysis (math.FA)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 46E22 (Primary), 30H15, 30H80 (Secondary)

description: We show that every function in a reproducing kernel Hilbert space with a normalized complete Pick kernel is the quotient of a multiplier and a cyclic multiplier. This extends a theorem of Alpay, Bolotnikov and Kaptanoğlu. We explore various consequences of this result regarding zero sets, spaces on compact sets and Gleason parts. In particular, using a construction of Salas, we exhibit a rotationally invariant complete Pick space of analytic functions on the unit disc for which the corona theorem fails.
description: 18 pages; minor changes
Spin polarization of electrons by ultraintense lasers
Creators: name: Del Sorbo, D.
name: Seipt, D.
name: Blackburn, T. G.
name: Thomas, A. G. R.
name: Murphy, C. D.
name: Kirk, J. G.
name: Ridgers, C. P.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In a strong magnetic field, ultra-relativistic electrons or positrons undergo spin flip transitions as they radiate, preferentially spin polarizing in one direction -- the Sokolov-Ternov effect. Here we show that this effect could occur very rapidly (in less than 10 fs) in high intensity ($I\gtrsim10^{23}$ W/cm$^{2}$) laser-matter interactions, resulting in a high degree of electron spin polarization (70%-90%).
Cross-Domain Discovery of Communication Peers. Identity Mapping and Discovery Services (IMaDS)
Creators: name: Friese, Ingo
name: Copeland, Rebecca
name: Göndör, Sebastian
name: Beierle, Felix
name: Küpper, Axel
name: Pereira, Ricardo Lopes
name: Crom, Jean-Michel
Publisher: name: arXiv
Year: 2017
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences
subject: C.2.1; C.2.4

description: The upcoming WebRTC-based browser-to-browser communication services present new challenges for user discovery in peer-to-peer mode. Even more so, if we wish to enable different web communication services to interact. This paper presents Identity Mapping and Discovery Service (IMaDS), a global, scalable, service independent discovery service that enables users of web-based peer-to-peer applications to discover other users whom to communicate with. It also provides reachability and presence information. For that, user identities need to be mapped to any compatible service identity as well as to a globally unique, service-independent identity. This mapping and discovery process is suitable for multiple identifier formats and personal identifying properties, but it supports user-determined privacy options. IMaDS operates across different service domains dynamically, using context information. Users and devices have profiles containing context and other specific information that can be discovered by a search engine. The search results reveal the user's allocated globally unique identifier (GUID), which is then resolved to a list of the user's service domains identities, using a DHT-based directory service. Service-specific directories allow tracking of active endpoints, where users are currently logged on and can be contacted.
description: Accepted for publication at the 2017 European Conference on Networks and Communications (EuCNC)
Testing non-minimally coupled inflation with CMB data: a Bayesian analysis
Creators: name: Campista, Marcela
name: Benetti, Micol
name: Alcaniz, Jailson
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We use the most recent cosmic microwave background (CMB) data to perform a Bayesian statistical analysis and discuss the observational viability of inflationary models with a non-minimal coupling,~$ξ$, between the inflaton field and the Ricci scalar. We particularize our analysis to two examples of small and large field inflationary models, namely, the Coleman-Weinberg and the chaotic quartic potentials. We find that (i) the $ξ$ parameter is closely correlated with the primordial amplitude; (ii) although improving the agreement with the CMB data in the $r - n_s$ plane, where $r$ is the tensor-to-scalar ratio and $n_s$ the primordial spectral index, a non-null coupling is strongly disfavoured with respect to the minimally coupled standard $Λ$CDM model, since the upper bounds of the Bayes factor (odds) for $ξ$ parameter are greater than $150:1$.
description: 13 pages,7 figures
Nonadiabatic holonomic quantum computation with dressed-state qubits
Creators: name: Xue, Zheng-Yuan
name: Gu, Feng-Lei
name: Hong, Zhuo-Ping
name: Yang, Zi-He
name: Zhang, Dan-Wei
name: Hu, Yong
name: You, J. Q.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Implementing holonomic quantum computation is a challenging task as it requires complicated interaction among multilevel systems. Here we propose to implement nonadiabatic holonomic quantum computation based on dressed-state qubits in circuit QED. An arbitrary holonomic single-qubit gate can be conveniently achieved using external microwave fields and tuning their amplitudes and phases. Meanwhile, nontrivial two-qubit gates can be implemented in a coupled-cavities scenario assisted by a grounding SQUID with tunable interaction, where the tuning is achieved by modulating the ac flux threaded through the SQUID. In addition, our proposal is directly scalable, up to a two-dimensional lattice configuration. In the present scheme, the dressed states involve only the lowest two levels of each transmon qubit and the effective interactions exploited are all of resonant nature. Therefore, we release the main difficulties for physical implementation of holonomic quantum computation on superconducting circuits.
description: v3: to be published at Physical Review Applied
Fabric into Art: An Introduction
Creators: name: Oyelola, Patricia
Publisher: name: Archaeology Data Service
Year: 2023

description: The Nigerian Field, 84, 5-18
description: Some modern West African artists have used traditional fabrics in a variety of ways as an inspiration for their own work. While some have physically incorporated fabrics into their creations, others have inteliectualized indigenous designs into abstract compositions. El Anatsui has gone one step further, transforming discarded metal bottle caps into fabric-like pieces, 'sewing' these together to create wall sculptures with a message.
Extracts from Mclzian's Bini Dictionary II: Catalogue of Narratives and Annotations on Bini Ethnobotany Using Africa-wide (Prota) Criteria
Creators: name: Aigbokhan, EI
name: Igho-Osagie, UP
Publisher: name: Archaeology Data Service
Year: 2023

description: The Nigerian Field, 84, 30-75
High-power femtosecond pulses without a modelocked laser
Creators: name: Fu, Walter
name: Wright, Logan G.
name: Wise, Frank W.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate a fiber system which amplifies and compresses pulses from a gain-switched diode. A Mamyshev regenerator shortens the pulses and improves their coherence, enabling subsequent amplification by parabolic pre-shaping. As a result, we are able to control nonlinear effects and generate nearly transform-limited, 140-fs pulses with 13-MW peak power---an order-of-magnitude improvement over previous gain-switched diode sources. Seeding with a gain-switched diode results in random fluctuations of 2% in the pulse energy, which future work using known techniques may ameliorate. Further development may allow such systems to compete directly with sources based on modelocked oscillators in some applications while enjoying unparalleled robustness and repetition rate control.
description: 10 pages, 8 figures
Incidence of Hydnora Thunb. in Nigeria: First Report
Creators: name: Oso, Oluwatobi
name: Gosomji, Yilnya
name: Dawurung, Christiana
name: Elisha, Emmanuel
name: Ayeola, Adeniyi
name: Aigbokhan, Emmanuel
name: Agyeno, Otuwose
Publisher: name: Archaeology Data Service
Year: 2023

description: The Nigerian Field, 83, 5-14
description: Hydnora species (Hydnoraceae) are parasitic angiosperms endemic to Africa and restricted to the Sudano-Zambezian region. We report here the occurrence ofseveral stands of Hydnora abyssinica A. Braun in Nekong, Wusali ward, a lowland area in the Sudan-Savanna zone in Kanke Local Government Area, lateau State, Nigeria. Hydnora abyssinica was found parasitizing woody plants, noticeablyAcacia hockii De Wild, Piliostigma thonningii (Schum.) Milne-Redh and Tamarindus indica L. Our observations represent the first recorded occurrence of any Hydnora species in the Guineo-Congolian region which, when combined with its well-known Sudano-Zambezian distribution, enlarges and establishes its distributional range as an African endemic species.
Innovations in Waste to Value Added Products: Our Experience
Creators: name: Sridhar, M K C
name: Hammed, Taiwo
Publisher: name: Archaeology Data Service
Year: 2023

description: The Nigerian Field, 83, 15-31
description: Innovation is a process of translating an idea or invention into a good or service that creates value or for which customers will pay. To be called an innovation, an idea must be replicable at an economical cost and must satisfy a specific need. Innovation involves deliberate application of information, imagination and initiative in deriving greater or different values from resources, and ncludes all processes by which new ideas are generated and converted into useful products In the area of waste management, the strategies adopted by various countries, have failed due to several factors. These factors are mostly of human origin such as human error, poor governance and improper decision making.
МОДЕРНИЗИРОВАННЫЕ МЕТОДЫ ПРЕИМПЛАНТАЦИОННОЙ ГЕНЕТИЧЕСКОЙ ДИАГНОСТИКИ В РЕСПУБЛИКЕ УЗБЕКИСТАН
Creators: name: Ихтиярова, Г.А.
name: Кудратова, Д.Ш.
Publisher: name: Zenodo
Year: 2025

description: Предупреждение рождения детей с наследственными заболеваниями является одной из актуальных задач современной медицины. В настоящее время для выполнения этой задачи используют методы пренатальной диагностики (ПД), направленной на выявление патологических состояний у плода при прогрессирующей беременности, и преимплантационной генетической диагностики (ПГД/PGD — Preimplantation Genetic Diagnosis), позволяющей исследовать геном эмбриона до его переноса в полость матки. Современные возможности преимплантационной генетической диагностики быстро развивается, и, по-видимому, в скором будущем расширит возможности ЭКО с ПГД.
External luminescence and photon recycling in near-field thermophotovoltaics
Creators: name: DeSutter, John
name: Vaillon, Rodolphe
name: Francoeur, Mathieu
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The importance of considering near-field effects on photon recycling and spontaneous emission in a thermophotovoltaic device is investigated. Fluctuational electrodynamics is used to calculate external luminescence from a photovoltaic cell as a function of emitter type, vacuum gap thickness between emitter and cell, and cell thickness. The observed changes in external luminescence suggest strong modifications of photon recycling caused by the presence of the emitter. Photon recycling for propagating modes is affected by reflection at the vacuum-emitter interface and is substantially decreased by the leakage towards the emitter through tunneling of frustrated modes. In addition, spontaneous emission by the cell can be strongly enhanced by the presence of an emitter supporting surface polariton modes. It follows that using a radiative recombination model with a spatially uniform radiative lifetime, even corrected by a photon recycling factor, is inappropriate. Applying the principles of detailed balance, and accounting for non-radiative recombination mechanisms, the impact of external luminescence enhancement in the near field on thermophotovoltaic performance is investigated. It is shown that unlike isolated cells, the external luminescence efficiency is not solely dependent on cell quality, but significantly increases as the vacuum gap thickness decreases below 400 nm for the case of an intrinsic silicon emitter. In turn, the open-circuit voltage and power density benefit from this enhanced external luminescence toward the emitter. This benefit is larger as cell quality, characterized by the contribution of non-radiative recombination, decreases.
description: 44 pages, 8 figures, 1 table, 4 supplemental figures
title: Investigating Te and other volatile trace elements in sediments as proxies for flood basalt volcanism
Creators: name: Regelous, Marcel
name: Adatte, Thierry
name: Baumann, Nils
name: Fantasia, Alicia
name: Grasby, Steve
name: Regelous, Anette
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2022

description:
Linking the timing and eruption rate of flood basalt volcanism with the sedimentary record is critical to understanding how large volcanic events cause environmental change during periods of mass extinction. We investigated the trace elements Te, Re, Cd, As, Sb, Tl which are highly enriched in volcanic gas relative to crustal rocks, as potential proxies for past volcanism. We analysed sediments from the Permian-Triassic, Pliensbachian-Toarcian and Cretaceous-Paleogene boundaries where mass extinction events have been linked to Siberian, Karoo-Ferrar and Deccan flood basalt volcanism respectively.

At the P/Tr boundary at Spitsbergen, Te concentrations and Te/Th ratios increase by a factor of 10 together with Hg at the Late Permian Extinction level, and decrease gradually over 300-400 kyr into the Griesbachian. Two Lower Jurassic sections (Portugal, France) show similar enrichments in Te during and after the Toarcian Oceanic Anoxic Event, and at the Pl/To boundary. Late Maastrichtian and early Danian sediments at Elles (Tunisia) record several peaks in Te/Th below and above the K/Pg boundary, possibly corresponding to 100 kyr pulses of Deccan volcanism, and a ‘spike’ due to extra-terrestrial Te in the K/Pg boundary clay.

Te/Th does not appear to vary systematically with sediment lithology, or with changes in environmental conditions. We suggest that the Te enrichments are volcanic in origin, and together with Hg and Hg/TOC ratios, may be used as a proxy for the intensity of volcanic activity. In contrast, Cd, Tl and Re concentrations in sediments from these sections are at least partly influenced by environmental factors.
Ipolowooja L'Aagunmu Owo. The Logic of the Functionalist Model of Advertorials in Yoruba Markets
Creators: name: Ademola Olayoku, Philip
Publisher: name: Archaeology Data Service
Year: 2023

description: The Nigerian Field, 83, 32-47
description: Yoruba markets are microcosms oflarger communities, as they serve as centres of socioeconomic activities, as well as points at which new identities and relationships are created and sustained. Thus, the Yoruba socioeconomic space mirrors its cosmology, which encapsulates the spiritual and the physical, with Aje as the spiritual being that drives the principles of interactions in these spaces. This article explores how functionalism drives advertising in Yoruba socioeconomic life by unpacking the intersections between identity, place and space, while advocating that modern advertising models should adopt an ethically driven mode that prioritizes customer care above profit.
The fraction of cool-core clusters in X-ray vs. SZ samples using Chandra observations
Creators: name: Andrade-Santos, Felipe
name: Jones, Christine
name: Forman, William R.
name: Lovisari, Lorenzo
name: Vikhlinin, Alexey
name: van Weeren, Reinout J.
name: Murray, Stephen S.
name: Arnaud, Monique
name: Pratt, Gabriel W.
name: Démoclès, Jessica
name: Kraft, Ralph
name: Mazzotta, Pasquale
name: Böhringer, Hans
name: Chon, Gayoung
name: Giacintucci, Simona
name: Clarke, Tracy E.
name: Borgani, Stefano
name: David, Laurence P.
name: Douspis, Marian
name: Pointecouteau, Etienne
name: Dahle, Håkon
name: Brown, Shea
name: Aghanim, Nabila
name: Rasia, Elena
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We derive and compare the fractions of cool-core clusters in the {\em Planck} Early Sunyaev-Zel'dovich sample of 164 clusters with $z \leq 0.35$ and in a flux-limited X-ray sample of 100 clusters with $z \leq 0.30$, using {\em Chandra} observations. We use four metrics to identify cool-core clusters: 1) the concentration parameter: the ratio of the integrated emissivity profile within 0.15 $r_{500}$ to that within $r_{500}$, and 2) the ratio of the integrated emissivity profile within 40 kpc to that within 400 kpc, 3) the cuspiness of the gas density profile: the negative of the logarithmic derivative of the gas density with respect to the radius, measured at 0.04 $r_{500}$, and 4) the central gas density, measured at 0.01 $r_{500}$. We find that the sample of X-ray selected clusters, as characterized by each of these metrics, contains a significantly larger fraction of cool-core clusters compared to the sample of SZ selected clusters (44$\pm$7\% vs. 28$\pm$4\% using the concentration parameter in the 0.15--1.0 $r_{500}$ range, 61$\pm$8\% vs. 36$\pm$5\% using the concentration parameter in the 40--400 kpc range, 64$\pm$8\% vs. 38$\pm$5\% using the cuspiness, and 53$\pm$7\% vs. 39$\pm$5\% using the central gas density). Qualitatively, cool-core clusters are more X-ray luminous at fixed mass. Hence, our X-ray flux-limited sample, compared to the approximately mass-limited SZ sample, is over-represented with cool-core clusters. We describe a simple quantitative model that uses the excess luminosity of cool-core clusters compared to non-cool-core clusters at fixed mass to successfully predict the observed fraction of cool-core clusters in X-ray selected samples.
description: 18 pages, 6 figures, 5 tables. Accepted for publication in ApJ
Top quark FCNC couplings at future circular hadron electron colliders
Creators: name: Denizli, H.
name: Senol, A.
name: Yilmaz, A.
name: Cakir, I. T.
name: Karadeniz, H.
name: Cakir, O.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A study of single top quark production via flavor changing neutral current interactions at $tqγ$ vertices is performed at future circular hadron electron collider. The signal cross sections for the processes $e^{-}p\to e^{-}W^{\pm}q+X$ and $e^{-}p\to e^{-}W^{\pm}bq+X$ in the collision of electron beam with energy $E_e=$ 60 GeV and proton beam with energy $E_p=$ 50 TeV are calculated. In the analysis, the invariant mass distributions of three jets reconstructing top quark mass, requiring one b-tagged jet and other two jets reconstructing the $W$ mass are used to count signal and background events after all selection cuts. The upper limits on the anomalous flavor changing neutral current $tqγ$ couplings are found to be $λ_q < $ 0.01 at future circular hadron electron collider for $L_{int}=100$ fb$^{-1}$ with the fast simulation of detector effects. Signal significance depending on the couplings $λ_q$ is analyzed and an enhanced sensitivity is found to the branching ratio BR($t\to qγ$) at the future circular hadron electron collider when compared to the current experimental results.
description: 11 pages, 4 Figures, 4 Tables, to appear in Phys. Rev. D
МАИШИЙ ЧИҚИНДИЛАР ТАЪСИРИДА ЎЗГАРГАН ТУПРОҚЛАРНИНГ УНУМДОРЛИК КЎРСАТКИЧЛАРНИ ЯХШИЛАШ ЧОРА-ТАДБИРЛАРИ
Creators: name: Йўлдошева, Шохида
Publisher: name: Zenodo
Year: 2025

description: Маиший чиқиндилар таркибида турли моддаларнинг мавжудлиги турли тупроқларга ҳар хил таъсир кўрсатади. Маиший чиқиндилар аҳоли яшаш жойида ташкил этилган чиқиндихоналардан йиғиб олиниб, Тошкент шаҳар маиший чиқиндихонасига олиб борилади ва чиқиндихонада чиқинди маҳсулотлари сараланиб фракцияларга ажратилади.
Improvement in the accuracy of flux measurement of radio sources by exploiting an arithmetic pattern in photon bunching noise
Creators: name: Lieu, Richard
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: A hierarchy of statistics of increasing sophistication and accuracy is proposed, to exploit an interesting and fundamental arithmetic structure in the photon bunching noise of incoherent light of large photon occupation number, with the purpose of suppressing the noise and rendering a more reliable and unbiased measurement of the light intensity. The method does not require any new hardware, rather it operates at the software level, with the help of high precision computers, to reprocess the intensity time series of the incident light to create a new series with smaller bunching noise coherence length. The ultimate accuracy improvement of this method of flux measurement is limited by the timing resolution of the detector and the photon occupation number of the beam (the higher the photon number the better the performance). The principal application is accuracy improvement in the bolometric flux measurement of a radio source.
description: 15 pages, 55 equations, 1 figure. ApJ in press
An advanced thermal decomposition method for the synthesis of novel cobalt-doped core (magnetite) – shell (maghemite) iron oxide nanoparticles with ultrahigh heating efficiency for systemic magnetic hyperthermia
Creators: name: Singh, Prem
name: Demessie, Ananiya A.
name: Park, Youngrong
name: Moses, Abraham S.
name: Korzun, Tetiana
name: Sabei, Fahad Y.
name: Albarqi, Hassan A.
name: Campos, Leonardo
name: Wyatt, Cory R.
name: Farsad, Khashayar
name: Dhagat, Pallavi
name: Sun, Conroy
name: Taratula, Olena "Oleh" R.
Publisher: name: Oregon Health and Science University
Year: 2023
Subjects: subject: Hyperthermia, Induced
subject: Ovarian Neoplasms
subject: Nanoparticles
subject: Ferric Compounds
subject: Magnetic hyperthermia
subject: Ovarian cancer
subject: LHRH peptides
subject: AMF

description: Owing to the low heating efficiency of currently available magnetic nanoparticles, it is challenging to reach therapeutic temperatures above 44 0C in tumors that are generally difficult to access after systemic delivery of nanoparticles at clinical dosage (10 mg kg-1). In order to solve this problem, we have developed an advanced thermal decomposition method for the synthesis of novel cobalt-doped core (magnetite) – shell (maghemite) iron oxide nanoparticles (Co-Fe3O4/γ-Fe2O3) with an ultrahigh ILP of 48.0 nH m2 kg-1. Our in vivo research shows that these nanoparticles containing a cancer-targeting peptide are biocompatible and accumulate well in ovarian cancer grafts after being administered systemically at a concentration of 4 mg kg-1. When exposed to an external AMF (420 kHz, 26.9 kA m-1), the delivered nanoparticles elevate temperature in both subcutaneous and metastatic cancer tumors to 50 0C. This newly developed synthesis method can be used for the synthesis of both non-doped core-shell nanoparticles and core-shell nanoparticles doped with different metals (e.g., Ni, Co). As a result, this strategy could be extended to the development of novel nanoparticles with even greater heating performance, further advancing systemic magnetic hyperthermia for cancer treatment.
Stability and instability of the sub-extremal Reissner-Nordström black hole interior for the Einstein-Maxwell-Klein-Gordon equations in spherical symmetry
Creators: name: Van de Moortel, Maxime
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We show non-linear stability and instability results in spherical symmetry for the interior of a charged black hole -approaching a sub-extremal Reissner-Nordström background fast enough at infinity- in presence of a massive and charged scalar field, motivated by the strong cosmic censorship conjecture in that setting : 1. Stability : We prove that spherically symmetric characteristic initial data to the Einstein-Maxwell- Klein-Gordon equations approaching a Reissner-Nordström background with a sufficiently decaying polynomial decay rate on the event horizon gives rise to a space-time possessing a Cauchy horizon in a neighbourhood of time-like infinity. Moreover if the decay is even stronger, we prove that the spacetime metric admits a continuous extension to the Cauchy horizon. This generalizes the celebrated stability result of Dafermos for Einstein-Maxwell-real-scalar-field in spherical symmetry. 2. Instability : We prove that for the class of space-times considered in the stability part, whose scalar field in addition obeys a polynomial averaged-L^2 (consistent) lower bound on the event horizon, the scalar field obeys an integrated lower bound transversally to the Cauchy horizon. As a consequence we prove that the non-degenerate energy is infinite on any null surface crossing the Cauchy horizon and the curvature of a geodesic vector field blows up at the Cauchy horizon near time-like infinity. This generalizes an instability result due to Luk and Oh for Einstein-Maxwell-real-scalar-field in spherical symmetry. This instability of the black hole interior can also be viewed as a step towards the resolution of the C^2 strong cosmic censorship conjecture for one-ended asymptotically initial data.
description: 46 pages, 4 figures Correction of a few typos. Version accepted for publication in Communications in Mathematical Physics
Existence of renormalized solutions to elliptic equation in Musielak-Orlicz space
Creators: name: Gwiazda, Piotr
name: Skrzypczak, Iwona
name: Zatorska-Goldstein, Anna
Publisher: name: arXiv
Year: 2017
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35J60

description: We prove existence of renormalized solutions to general nonlinear elliptic equation in Musielak-Orlicz space avoiding growth restrictions. Namely, we consider \begin{equation*} -{\rm div} A(x,\nabla u)= f\in L^1(Ω), \end{equation*} on a Lipschitz bounded domain in $\mathbb{R}^N$. The growth of the monotone vector field $A$ is controlled by a generalized nonhomogeneous and anisotropic $N$-function $M $. The approach does not require any particular type of growth condition of $M$ or its conjugate $M^*$ (neither $Δ_2$, nor $\nabla_2$). The condition we impose is log-Holder continuity of $M$, which results in good approximation properties of the space. The proof of the main results uses truncation ideas, the Young measures methods and monotonicity arguments.
Thermalization of overpopulated systems in the 2PI formalism
Creators: name: Tsutsui, Shoichiro
name: Blaizot, Jean-Paul
name: Hatta, Yoshitaka
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Based on the two-particle irreducible (2PI) formalism to next-to-leading order in the $1/N$ expansion, we study the thermalization of overpopulated systems in scalar $O(N)$ theories with moderate coupling. We focus in particular on the growth of soft modes, and examine whether this can lead to the formation of a transient Bose-Einstein condensate (BEC) when the initial occupancy is high enough. For the value of the coupling constant used in our simulations, we find that while the system rapidly approaches the condensation threshold, the formation of a BEC is eventually hindered by particle number changing processes.
description: 19 pages, 7 figures
Holography, Brane Intersections and Six-dimensional SCFTs
Creators: name: Bobev, Nikolay
name: Dibitetto, Giuseppe
name: Gautason, Fridrik Freyr
name: Truijen, Brecht
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study supersymmetric intersections of NS5-, D6- and D8-branes in type IIA string theory. We focus on the supergravity description of this system and identify a "near horizon" limit in which we recover the recently classified supersymmetric seven-dimensional AdS solutions of massive type IIA supergravity. Using a consistent truncation to seven-dimensional gauged supergravity we construct a universal supersymmetric deformation of these AdS vacua. In the holographic dual six-dimensional (1,0) superconformal field theory this deformation describes a universal RG flow on the tensor branch of the vacuum moduli space triggered by a vacuum expectation value for a protected scalar operator of dimension four.
description: 26 pages, 6 figures. v2: Minor corrections, published version
Dynamical correspondences of $L^2$-Betti numbers
Creators: name: Liang, Bingbing
Publisher: name: arXiv
Year: 2017
Subjects: subject: Dynamical Systems (math.DS)
subject: Algebraic Topology (math.AT)
subject: Group Theory (math.GR)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: We investigate dynamical analogues of the $L^2$-Betti numbers for modules over integral group ring of a discrete sofic group. In particular, we show that the $L^2$-Betti numbers exactly measure the failure of addition formula for dynamical invariants.
description: The main result is reformulated a little bit and the proof is more self-contained
$L_μ-L_τ$ gauge-boson production from lepton flavor violating $τ$ decays at Belle II
Creators: name: Chen, Chuan-Hung
name: Nomura, Takaaki
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: $L_μ-L_τ$ gauge boson ($Z'$) with a mass in the MeV to GeV region can resolve not only the muon $g-2$ excess, but also the gap in the high-energy cosmic neutrino spectrum at IceCube. It was recently proposed that such a light gauge boson can be detected during the Belle II experiment with a luminosity of 50 ab$^{-1}$ by the $e^+ e^- \to γ+\slashed{E}$ process through the kinetic mixing with the photon, where the missing energy $\slashed{E}$ is from the $Z' \to \barνν$ decays. We study the phenomenological implications when a pair of singlet vector-like leptons carrying different $L_μ- L_τ$ charges are included, and a complex singlet scalar ($ϕ_S$) is introduced to accomplish the spontaneous $U(1)_{L_μ-L_τ}$ symmetry breaking. It is found that the extension leads to several phenomena of interest, including (i) branching ratio (BR) for $h\to μτ$ can be of the order of $10^{-3}$; (ii) $ϕ_S$-mediated muon $g-2$ can be of the order of $10\times 10^{-10}$; (iii) BR for $τ\to μϕ^*_S\to μZ'Z'$ can be $10^{-8}$, and (iv) kinetic mixing between the $Z'$ boson and photon is sensitive to the relative heavy lepton masses. The predicted BRs for $τ\to (3μ+\slashed{E}, 5μ$) through the leptonic $Z'$ decays can reach a level of $10^{-9}$, in which the results fall within the sensitivity of the Belle II in the search for the rare tau decays.
description: 23 pages, 7 figures, 4 tables, version to appear in Phys. Rev. D
Electron cyclotron maser instability (ECMI) in strong magnetic guide field reconnection
Creators: name: Treumann, R. A.
name: Baumjohann, W.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Space Physics (physics.space-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Reconnection in strong current-aligned magnetic guide fields allows for the excitation of the electron-cyclotron-maser instability and emission of electromagnetic radiationfrom the electron exhaust at the {\sf X} point. The electrons in the guide field remain magnetized, with reconnection barely affected. The guide field is responsible for the asymmetric properties of the {\sf X} point and exhaust. Asymmetry in the electron population results in conditions favorable for ECMI. Fundamental mission beneath the guide field cyclotron is similar to electron hole emission discussed elsewhere. It can be treated in the proper exhaust frame, and maps the local magnetic field when moving together with the exhaust along the guide field. Many applications of this mechanism can be imagined. We propose an outline of the mechanism and discuss some of its advantages and prospects. Among potential applications are AKR in auroral physics, various types of solar radio emissions during flares, planetary emissions and several astrophysical scenarios involving the presence of strong fields and field-aligned currents. Escape of radiation from {\sf X} is no problem. However, observation from remote requires traversing the stop-band of X modes and implies source displacements to weaker fields.
description: 15 pages, 7 figures, refereed version, to appear in Ann Geophys
Little strings on $D_n$ orbifolds
Creators: name: Kim, Joonho
name: Lee, Kimyeong
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We explore two classes of 6d $\mathcal{N}=(1,0)$ little string theories obtained from type IIA/IIB NS5-branes probing $D_n$ singularities. Their tensor branches are described by effective gauge theories whose instanton solitons are macroscopic little strings. We specifically study two families of 2d $\mathcal{N}=(0,4)$ gauge theories which describe at low energy the worldsheet dynamics of the type IIA/IIB little strings. These gauge theories are useful to calculate the supersymmetric partition functions of the little string theories on $\mathbf{R}^4 \times T^2$. We establish the T-duality of the little string theories by utilizing their BPS spectra as a probe.
description: 29 pages, 9 figures; v2: minor changes, published version
Communication games reveal preparation contextuality
Creators: name: Hameedi, Alley
name: Tavakoli, Armin
name: Marques, Breno
name: Bourennane, Mohamed
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A communication game consists of distributed parties attempting to jointly complete a task with restricted communication. Such games are useful tools for studying limitations of physical theories. A theory exhibits preparation contextuality whenever its predictions cannot be explained by a preparation noncontextual model. Here, we show that communication games performed in operational theories reveal the preparation contextuality of that theory. For statistics obtained in a particular family of communication games, we show a direct correspondance with correlations in space-like separated events obeying the no-signaling principle. Using this, we prove that all mixed quantum states of any finite dimension are preparation contextual. We report on an experimental realization of a communication game involving three-level quantum systems from which we observe a strong violation of the constraints of preparation noncontextuality.
Effect of Water Level on Fish Catch at Oyan Lake, Southwestern Nigeria
Creators: name: Ikenweiwe, N
name: Alimi, A
name: Otubusin, S
Publisher: name: Archaeology Data Service
Year: 2023

description: The Nigerian Field, 82, 52-56
description: A study ofthe effect ofwater level on fish catch was carried out on Oyan Lake, southwest, Nigeria, for 18 months. A fleet of nine passive graded experimental gill nets (mesh sizes of 25.4 to 177.8mm of equal surface area) was used in catching fish at the shore, and at open water at the surface and bottom ofthe lake. At the point where the gill net was to be set, water depth was recorded and used to calculate the lake water volume, based on the lake area of 40 square kilometre. The effects ofwater level on catch were measured using the number and weight offish recorded as indices over the period of study. High catches were recorded mostly at high water level than at low water level. However, with the right kind of fishing gear, fishermen are sure of bumper harvest at the two seasons of the year.