cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
HellRank: A Hellinger-based Centrality Measure for Bipartite Social Networks
Creators: name: Taheri, Seyed Mohammad
name: Mahyar, Hamidreza
name: Firouzi, Mohammad
name: K., Elahe Ghalebi
name: Grosu, Radu
name: Movaghar, Ali
Publisher: name: arXiv
Year: 2016
Subjects: subject: Social and Information Networks (cs.SI)
subject: Computers and Society (cs.CY)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Measuring centrality in a social network, especially in bipartite mode, poses several challenges such as requirement of full knowledge of the network topology and lack of properly detection of top-k behavioral representative users. In this paper, to overcome the aforementioned challenging issues, we propose an accurate centrality measure, called HellRank, to identify central nodes in bipartite social networks. HellRank is based on the Hellinger distance between two nodes on the same side of a bipartite network. We theoretically analyze the impact of the Hellinger distance on a bipartite network and find an upper and lower bounds for this distance. The computation of HellRank centrality measure can be distributed by letting each node uses only local information on its immediate neighbors and therefore do not need a central entity to have full knowledge of the network topological structure. We experimentally evaluate performance of the HellRank measure in correlation with other centrality measures on real-world networks. The results show partial ranking similarity between the HellRank and the other conventional metrics according to the Kendall and Spearman rank correlation coefficient.
MPEC 2023-R121 : 2023 QU18
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 QU18

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Mapping Neurotransmitter Identity in the Whole-Mount Drosophila Brain Using Multiplex High-Throughput Fluorescence in situ Hybridization
Creators: name: Meissner, Geoffrey W.
name: Nern, Aljoscha
name: Singer, Robert H.
name: Wong, Allan
name: Malkesman, Oz
name: Long, Xi
Publisher: name: Janelia Research Campus
Year: 2018
Subjects: Neuroscience

description: test
Using LLMs for research: A personal perspective
Creators: name: Li, Haipeng
Publisher: name: Zenodo
Year: 2023
Subjects: LLMs, research, prompt, ChatGPT

description: The presentation is about the author's experience and reflection of using large language models (LLMs) such as ChatGPT and Claude in research, especially in paleogeography and sedimentology. It discusses what LLMs are capable of, how to write good prompts, and things we should be aware of.
Człowiek a historia. T. 6, Ludzie i wydarzenia
Creators: name: (:Unav)
Publisher: name: Wydawnictwo Uniwersytetu Jana Kochanowskiego. Filia w Piotrkowie Trybunalskim
Year: 2021

description: W pierwszym z rozdziałów niniejszej monografii przedstawiono zagadnienia związane z historycznym rozwojem mechanizmów spustowych kusz, opierając się w części omówienia na wynikach własnych doświadczeń w rekonstrukcji historycznej. Inny tekst praktyka-rekonstruktora, zawartym w niniejszej publikacji, podnosi temat typologii Krzyża Walecznych w armii polskiej od czasów wojny bolszewickiej do dzisiaj. W tomie znajduje się również rozdział dotyczący zagadnienia polityki Jagiellonów w pierwszej połowie XVI wieku i rozdział, w którym dokonano reasumpcji wiedzy na temat pobytu Franciszka II Rakoczego w Gdańsku. Kolejny artykuł podejmuje próbę wskazania błędów dotychczasowej historiografii polskiej na temat postaci Ignacego Błeszyńskiego, jednego z powstańców styczniowych związanych z regionem piotrkowskim. Kolejne dwa rozdziały również dotyczą zagadnień historii regionalnej, ale w wymiarze geograficzno-społecznym, a nie prozopograficznym. Pierwszy z nich przedstawia wyniki badań dotyczących rozwoju jednego z istotnych dziewiętnastowiecznych kurortów nadbałtyckich – Krynicy Morskiej, drugi historię powstania i rozwoju przestrzeni sepulkralnych w Gadce Starej pod Rzgowem (woj. łódzkie). Tematyką regionalną została podjęta również w kolejnym artykule, w którym autor przeanalizował piotrkowskie wydania „Dziennika Narodowego” pod kątem tworzonego przez redaktorów gazety wizerunku Niemców i nazizmu w przededniu konfliktu światowego. Tematyka wojenna znalazła swoje odzwierciedlenie w rozdziale dotyczącym kodów kulturowych dzieł niemieckiego malarza żydowskiego pochodzenia, Feliksa Nussbauma, który zginął w Auschwitz-Birkenau 2 sierpnia 1944 roku. Epokę komunizmu podejmują w niniejszym tomie dwa artykuły. Pierwszy z autorów dokonał reasumpcji dokonań badawczych dotyczących udziału oddziałów wojskowych w tłumieniu wydarzeń czerwca 1956 roku w Poznaniu, drugi zaś scharakteryzował niektóre, wybrane elementy funkcjonowania rządów komunistycznych w epoce późnego Związku Sowieckiego. W dziale Varia znalazły się teksty uzupełniające historyczną część tomu o zagadnienia z dziedzin etnografii i administracji. Pierwszy przedstawia interesujące możliwości jakie niosą za sobą badania etnograficzne w zakresie doprecyzowania niektórych aspektów naszej wiedzy archeologicznej. Drugi jest krótkim esejem, w którym autorka dokonała porównania dwóch systemów administracyjnych: europejskiego, kontynentalnego i amerykańskiego, anglosaskiego.
Device Independent Quantum Private Query
Creators: name: Maitra, Arpita
name: Paul, Goutam
name: Roy, Sarbani
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In Quantum Private Query (QPQ), a client obtains values corresponding to his query only and nothing else from the server and the server does not get any information about the queries. Giovannetti et al. (Phys. Rev. Lett., 2008) gave the first QPQ protocol and since then quite a few variants and extensions have been proposed. However, none of the existing protocols are device independent, i.e., all of them assume implicitly that the entangled states supplied to the client and the server are as prescribed. In this work, we exploit the idea of local CHSH game and connect it with the scheme of Yang et al. (Quantum Inf. Process., 2014) to present the concept of device independent QPQ protocol for the first time.
description: 7 pages, 2 figures
Disciplining School Adolescents At Basic Education Level In Nigeria.pdf
Creators: name: Orji, Evelyn   Ijeoma
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 399999
subject: Other education not elsewhere classified

description: Ensuring discipline in school adolescents at the basic education level in Nigeria has become one the basic needs of educational objectives because of the dire need to have disciplined individuals in the educational system.
MPEC 2023-R122 : 2023 RW3
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 RW3

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
ЛАТЕНТ ЖИНОЯТЧИЛИК ЖИНОЯТЛАРНИ КРИМИНОЛОГИК ПРОГНОЗЛАШНИНГ МУАММОСИ СИФАТИДА
Creators: name: ХОЛМИРЗАЕВ, Муҳсинбек
Publisher: name: Zenodo
Year: 2024

description: Мазкур мақолада жиноятларни криминолигик прогнозлашнинг сифатига ва аниқлилигига таъсир кўрсатувчи омиллар, уларни баратараф этишнинг эксклюзив ечимлари, жумладан лаент жиноятлар, уларнинг юзага келиши учун асосий омиллар, жиноятларни криминолигик прогнозлаш хатолари ва улар билан ишлашнинг ўзига хослиги, ҳуқуқни муҳофаза қилувчи органларнинг амалга ошириши лозим бўлган функционал вазифалар, шу билан бирга соҳани такомиллаштиришга қаратилган бир қатор таклифлар, мулоҳазалар ўз аксини топган.
Creep and thermal rounding close to the elastic depinning threshold
Creators: name: Purrello, V. H.
name: Iguain, J. L.
name: Kolton, A. B.
name: Jagla, E. A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study the slow stochastic dynamics near the depinning threshold of an elastic interface in a random medium by solving a particularly suited model of hopping interacting particles that belongs to the quenched-Edwards-Wilkinson depinning universality class. The model allows us to compare the cases of uniformly activated and Arrhenius activated hops. In the former case, the velocity accurately follows a standard scaling law of the force and noise intensity with the analog of the thermal rounding exponent satisfying a modified "hyperscaling" relation. For the Arrhenius activation, we find, both numerically and analytically, that the standard scaling form fails for any value of the thermal rounding exponent. We propose an alternative scaling incorporating logarithmic corrections that appropriately fits the numerical results. We argue that this anomalous scaling is related to the strong correlation between activated hops that, alternated with deterministic depinning-like avalanches, occur below the depinning threshold. We rationalize the spatiotemporal patterns by making an analogy of the present model in the near-threshold creep regime with some well-known models with extremal dynamics, particularly the Bak-Sneppen model.
description: Fixed typos and updated publication info
Extracting Implicit Social Relation for Social Recommendation Techniques in User Rating Prediction
Creators: name: Taheri, Seyed Mohammad
name: Mahyar, Hamidreza
name: Firouzi, Mohammad
name: K., Elahe Ghalebi
name: Grosu, Radu
name: Movaghar, Ali
Publisher: name: arXiv
Year: 2016
Subjects: subject: Social and Information Networks (cs.SI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Recommendation plays an increasingly important role in our daily lives. Recommender systems automatically suggest items to users that might be interesting for them. Recent studies illustrate that incorporating social trust in Matrix Factorization methods demonstrably improves accuracy of rating prediction. Such approaches mainly use the trust scores explicitly expressed by users. However, it is often challenging to have users provide explicit trust scores of each other. There exist quite a few works, which propose Trust Metrics to compute and predict trust scores between users based on their interactions. In this paper, first we present how social relation can be extracted from users' ratings to items by describing Hellinger distance between users in recommender systems. Then, we propose to incorporate the predicted trust scores into social matrix factorization models. By analyzing social relation extraction from three well-known real-world datasets, which both: trust and recommendation data available, we conclude that using the implicit social relation in social recommendation techniques has almost the same performance compared to the actual trust scores explicitly expressed by users. Hence, we build our method, called Hell-TrustSVD, on top of the state-of-the-art social recommendation technique to incorporate both the extracted implicit social relations and ratings given by users on the prediction of items for an active user. To the best of our knowledge, this is the first work to extend TrustSVD with extracted social trust information. The experimental results support the idea of employing implicit trust into matrix factorization whenever explicit trust is not available, can perform much better than the state-of-the-art approaches in user rating prediction.
Adaptivity in Spectral Deferred Corrections
Creators: name: Baumann, Thomas
name: Götschel, Sebastian
name: Lunet, Thibaut
name: Ruprecht, Daniel
name: Speck, Robert
Publisher: name: Forschungzentrum Jülich
Year: 2023

description: SIAM Conference on Computational Science and Engineering, SIAM CSE, Amsterdam, Netherlands, 27 Feb 2023 - 3 Mar 2023
description: The complexity of the dynamics of most computational problems is not uniform throughout time. This means that fixed resolution schemes will either over-resolve less complex areas or under-resolve the more complex parts. In principle, adaptively adjusting resolution provides a remedy. However, it can be computationally expensive since it requires the estimation of local errors and often costly bookkeeping of the discretization data structure. We present here temporal adaptivity based on an embedded version of spectral deferred corrections (SDC), which estimates the local error similarly to embedded Runge-Kutta methods. We are able to estimate the local error without additional right-hand-side evaluations and provide dynamic temporal resolution within the pySDC software framework. In addition, we show how adaptivity enables other improvements like fault-tolerant time-stepping.
Boötes-HiZELS: an optical to near-infrared survey of emission-line galaxies at $\bf z=0.4-4.7$
Creators: name: Matthee, Jorryt
name: Sobral, David
name: Best, Philip
name: Smail, Ian
name: Bian, Fuyan
name: Darvish, Behnam
name: Röttgering, Huub
name: Fan, Xiaohui
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a sample of $\sim 1000$ emission line galaxies at $z=0.4-4.7$ from the $\sim0.7$deg$^2$ High-$z$ Emission Line Survey (HiZELS) in the Boötes field identified with a suite of six narrow-band filters at $\approx 0.4-2.1$ $μ$m. These galaxies have been selected on their Ly$α$ (73), {\sc [Oii]} (285), H$β$/{\sc [Oiii]} (387) or H$α$ (362) emission-line, and have been classified with optical to near-infrared colours. A subsample of 98 sources have reliable redshifts from multiple narrow-band (e.g. [O{\sc ii}]-H$α$) detections and/or spectroscopy. In this survey paper, we present the observations, selection and catalogs of emitters. We measure number densities of Ly$α$, [O{\sc ii}], H$β$/{\sc [Oiii]} and H$α$ and confirm strong luminosity evolution in star-forming galaxies from $z\sim0.4$ to $\sim 5$, in agreement with previous results. To demonstrate the usefulness of dual-line emitters, we use the sample of dual [O{\sc ii}]-H$α$ emitters to measure the observed [O{\sc ii}]/H$α$ ratio at $z=1.47$. The observed [O{\sc ii}]/H$α$ ratio increases significantly from 0.40$\pm0.01$ at $z=0.1$ to 0.52$\pm0.05$ at $z=1.47$, which we attribute to either decreasing dust attenuation with redshift, or due to a bias in the (typically) fiber-measurements in the local Universe which only measure the central kpc regions. At the bright end, we find that both the H$α$ and Ly$α$ number densities at $z\approx2.2$ deviate significantly from a Schechter form, following a power-law. We show that this is driven entirely by an increasing X-ray/AGN fraction with line-luminosity, which reaches $\approx 100$ \% at line-luminosities $L\gtrsim3\times10^{44}$ erg s$^{-1}$.
description: Accepted for publication in MNRAS. Main text 16 pages, 7 Figures. Catalogues of line-emitters available
ИЧКИ ИШЛАР ОРГАНЛАРИ ХОДИМЛАРИ ИЖТИМОИЙ ҲИМОЯСИНИ ТАЪМИНЛАШДАГИ ҲУҚУҚИЙ КАФОЛАТЛАР
Creators: name: Раджапова, Лола
Publisher: name: Zenodo
Year: 2024

description: Мазкур мақолада ички ишлар органлари ходимларининг ижтимоий ҳимоясини таъминлашнинг кафолатлари, ходимларнинг ижтимоий ҳимоясини таъминлаш борасида қабул қилинган қарор, фармонларнинг  таҳлили, шунингдек, ички ишлар органлари ходимларининг ижтимоий ҳимоясини ривожлантириш юзасидан таклифлар баён этилган.
MPEC 2023-R123 : 2023 RX3
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 RX3

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Molecular quantum spin network controlled by a single qubit
Creators: name: Schlipf, Lukas
name: Oeckinghaus, Thomas
name: Xu, Kebiao
name: Dasari, Durga Bhaktavatsala Rao
name: Zappe, Andrea
name: de Oliveira, Felipe Fávaro
name: Kern, Bastian
name: Azarkh, Mykhailo
name: Drescher, Malte
name: Ternes, Markus
name: Kern, Klaus
name: Wrachtrup, Jörg
name: Finkler, Amit
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Scalable quantum technologies will require an unprecedented combination of precision and complexity for designing stable structures of well-controllable quantum systems. It is a challenging task to find a suitable elementary building block, of which a quantum network can be comprised in a scalable way. Here we present the working principle of such a basic unit, engineered using molecular chemistry, whose control and readout are executed using a nitrogen vacancy (NV) center in diamond. The basic unit we investigate is a synthetic polyproline with electron spins localized on attached molecular sidegroups separated by a few nanometers. We demonstrate the readout and coherent manipulation of very few ($\leq 6 $) of these $S=1/2$ electronic spin systems and access their direct dipolar coupling tensor. Our results show, that it is feasible to use spin-labeled peptides as a resource for a molecular-qubit based network, while at the same time providing simple optical readout of single quantum states through NV-magnetometry. This work lays the foundation for building arbitrary quantum networks using well-established chemistry methods, which has many applications ranging from mapping distances in single molecules to quantum information processing.
description: Author name typo
First-order strong-field QED processes in a tightly focused laser beam
Creators: name: Di Piazza, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In [Phys. Rev. Lett. \textbf{117}, 213201 (2016)] we have determined the angular resolved and the total energy spectrum of a positron produced via nonlinear Breit-Wheeler pair production by a high-energy photon counterpropagating with respect to a tightly focused laser beam. Here, we first generalize the results in [Phys. Rev. Lett. \textbf{117}, 213201 (2016)] by including the possibility that the incoming photon is not exactly counterpropagating with respect to the laser field. As main focus of the present paper, we determine the photon angular resolved and total energy spectrum for the related process of nonlinear Compton scattering by an electron impinging into a tightly-focused laser beam. Analytical integral expressions are obtained under the realistic assumption that the energy of the incoming electron is the largest dynamical energy of the problem and that the electron is initially almost counterpropagating with respect to the laser field. The crossing symmetry relation between the two processes in a tightly focused laser beam is also elucidated.
description: 24 pages, no figures
Variation along liquid isomorphs of the driving force for crystallization
Creators: name: Pedersen, Ulf R.
name: Adrjanowicz, Karolina
name: Niss, Kristine
name: Bailey, Nicholas P.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate the variation of the driving force for crystallization of a supercooled liquid along isomorphs, curves along which structure and dynamics are invariant. The variation is weak, and can be predicted accurately for the Lennard-Jones fluid using a recently developed formalism and data at a reference temperature. More general analysis allows interpretation of experimental data for molecular liquids such as dimethyl phthalate and indomethacin, and suggests that the isomorph scaling exponent $γ$ in these cases is an increasing function of density, although this cannot be seen in measurements of viscosity or relaxation time.
description: Corresponds to published version, i.e., including changes made during proof
Kobieta na przestrzeni dziejów. T. 3
Creators: name: (:Unav)
Publisher: name: Wydawnictwo Uniwersytetu Jana Kochanowskiego. Filia w Piotrkowie Trybunalskim
Year: 2021

description: W pierwszym dziale niniejszego wydawnictwa, dotyczącym historii, autorzy podjęli tematy dotyczące starożytności związane z reinterpretacją popularnych przekonań na temat kobiecości w patriarchalnych w założeniu społeczeństwach starożytności. W tomie znalazły się też artykuły dotyczące ubioru kobiecego w kulturze starożytnego Rzymu oraz małżeństw pomiędzy Piastami mazowieckimi i śląskimi. Tematykę średniowieczną reprezentuje również artykuł na temat dwóch bizantyńskich cesarzowych z XI wieku – Zoe i Teodory. Warto zarekomendować cztery przyczynki biograficzne w niniejszym tomie, dotyczące kobiet związanych z działalnością niepodległościową - Heleny Krukowieckiej, Felicji Boberskiej, Marii Wysłouchowej, a także Konstancji Markiewicz. Dział ten zamykają dwa teksty dotyczące historii społecznej –pierwszy z nich na temat problematyki statusu kobiet w II Rzeczypospolitej i drugi- społeczeństwa Korei Południowej. W drugim dziale, historii sztuki, znalazły się następujące biografie: Felixa Nussabauma, Katsushika Ōi, Mwandale Mwanyekwa. Wśród tekstów na pograniczu badań prawniczych i socjologicznych należy z pewnością polecić przekrojowy artykuł rozprawiający się ze zjawiskiem prostytucji kobiecej i jej prawno-kulturowych uwarunkowań, a także omówienie dotyczące tematyki seksualnej podejmowanej w poradnikach katolickich. Uzupełnieniem działu są: wnikliwe studium prawnicze pojęcia zasady niedyskryminacji oraz opracowanie danych Głównego Urzędu Statystycznego dotyczące kobiet. W dziale politologicznym znalazły się teksty na temat problematyki obecności kobiet na najwyższych stanowiskach w polityce międzynarodowej oraz o Simone Veil – jednym z przykładów tego, stosunkowo nowego, zjawiska.
Throwing Icebergs at White Dwarfs
Creators: name: Stephan, Alexander P.
name: Naoz, Smadar
name: Zuckerman, B.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: White dwarfs have atmospheres that are expected to consist nearly entirely of hydrogen and helium, since heavier elements will sink out of sight on short timescales. However, observations have revealed atmospheric pollution by heavier elements in about a quarter to a half of all white dwarfs. While most of the pollution can be accounted for with asteroidal or dwarf planetary material, recent observations indicate that larger planetary bodies, as well as icy and volatile material from Kuiper belt analog objects, are also viable sources of pollution. The commonly accepted pollution mechanisms, namely scattering interactions between planetary bodies orbiting the white dwarfs, can hardly account for pollution by objects with large masses or long-period orbits. Here we report on a mechanism that naturally leads to the emergence of massive body and icy and volatile material pollution. This mechanism occurs in wide binary stellar systems, where the mass loss of the planets' host stars during post main sequence stellar evolution can trigger the Eccentric Kozai-Lidov mechanism. This mechanism leads to large eccentricity excitations, which can bring massive and long-period objects close enough to the white dwarfs to be accreted. We find that this mechanism readily explains and is consistent with observations.
description: 8 pages, 6 figures, published in ApJ Letters
A Convergence Criterion for the Solutions of Nonlinear Difference Equations and Dynamical Systems
Creators: name: Sedaghat, H.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 39A30 (primary), 92D25 (secondary)

description: A general sufficient condition for the convergence of subsequences of solutions of non-autonomous, nonlinear difference equations and systems is obtained. For higher order equations the delay sizes and patterns play essential roles in determining which subsequences of solutions converge. For systems the specific manner in which the equations are related is important and lead to different criteria. Applications to discrete dynamical systems, including some that model populations of certain species are discussed.
description: 14 pages; an example and 4 figures added to the latest version to illustrate the main result in a concrete case
MPEC 2023-R124 : 2023 RY3
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 RY3

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Thermal Schwinger pair production at arbitrary coupling
Creators: name: Gould, Oliver
name: Rajantie, Arttu
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the rate of thermal Schwinger pair production at arbitrary coupling in weak external fields. Our calculations are valid independently of many properties of the charged particles produced, in particular their spin and whether they are electric or magnetic. Using the worldline formalism, we calculate the logarithm of the rate to leading order in the weak external field and to all orders in virtual photon exchange, taking us beyond the perturbative expansion about the leading order, weak coupling result.
description: 25 pages, 11 figures. v3, accepted for publication in Physical Review D
Stable non-Abelian semi-superfluid vortices in dense QCD
Creators: name: Chatterjee, Chandrasekhar
name: Nitta, Muneto
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Color superconductivity is expected to be formed in high density quark matter where color symmetry is spontaneously broken in the presence of di-quark condensate. Stable non-Abelian vortices or color magnetic flux tubes exist in the color-flavor locked phase at asymptotically high density. $\mathbb{C}P^2$ Nambu-Goldstone(NG) bosons and Majorana fermions belonging to the triplet representation are localized around a non-Abelian vortex. We discuss the zero mode analysis and the low-energy effective world sheet theory of a non-Abelian vortex. We determine the interactions of these bosonic and fermionic modes by using the nonlinear realization method. We also discuss the Aharanov-Bohm (AB) phases of charged particles, such as, electrons, muons, and color-flavor locked mesons made of tetra-quarks encircling around a non-Abelian vortex in the presence of electro-magnetic fields. This is a review based on our recent works arXiv:1602.01677, arXiv:1512.06603, arXiv:1612.09419.
description: Prepared for proceedings of Quarks and Compact Stars 2017 to be published in JPS Conf. Proc
Thermal discrete dipole approximation for the description of thermal emission and radiative heat transfer of magneto-optical systems
Creators: name: Ekeroth, R. M. Abraham
name: García-Martín, Antonio
name: Cuevas, Juan Carlos
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present here a generalization of the thermal discrete dipole approximation (TDDA) that allows us to describe the near-field radiative heat transfer between finite objects of arbitrary shape that exhibit magneto-optical (MO) activity. We also extend the TDDA approach to describe the thermal emission of a finite object with and without MO activity. Our method is also valid for optically anisotropic materials described by an arbitrary permittivity tensor and we provide simple closed formulas for the basic thermal quantities that considerably simplify the implementation of TDDA method. Moreover, we show that employing our TDDA approach one can rigorously demonstrate Kirchhoff's radiation law relating the emissivity and absorptivity of an arbitrary MO object. Our work paves the way for the theoretical study of the active control of emission and radiative heat transfer between MO systems of arbitrary size and shape.
description: 17 pages, 9 figures
SU(5) Unification with TeV-scale Leptoquarks
Creators: name: Cox, Peter
name: Kusenko, Alexander
name: Sumensari, Olcyr
name: Yanagida, Tsutomu T.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It was previously noted that SU(5) unification can be achieved via the simple addition of light scalar leptoquarks from two split $\bf10$ multiplets. We explore the parameter space of this model in detail and find that unification requires at least one leptoquark to have mass below $\approx16\,$TeV. We point out that introducing splitting of the $\bf24$ allows the unification scale to be raised beyond $10^{16}$ GeV, while a U(1)$_{PQ}$ symmetry can be imposed to forbid dangerous proton decay mediated by the light leptoquarks. The latest bounds from LHC searches are combined and we find that a leptoquark as light as 400 GeV is still permitted. Finally, we discuss the interesting possibility that the leptoquarks required for unification could also be responsible for the $2.6σ$ deviation observed in the ratio $R_K$ at LHCb.
description: 17 pages, 4 figures
MPEC 2023-R125 : 2023 RZ3
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 RZ3

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Magnetic field formation in the Milky Way-like disk galaxies of the Auriga project
Creators: name: Pakmor, Ruediger
name: Gomez, Facundo A.
name: Grand, Robert J. J.
name: Marinacci, Federico
name: Simpson, Christine M.
name: Springel, Volker
name: Campbell, David J. R.
name: Frenk, Carlos S.
name: Guillet, Thomas
name: Pfrommer, Christoph
name: White, Simon D. M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The magnetic fields observed in the Milky~Way and nearby galaxies appear to be in equipartition with the turbulent, thermal, and cosmic ray energy densities, and hence are expected to be dynamically important. However, the origin of these strong magnetic fields is still unclear, and most previous attempts to simulate galaxy formation from cosmological initial conditions have ignored them altogether. Here, we analyse the magnetic fields predicted by the simulations of the Auriga Project, a set of 30 high-resolution cosmological zoom simulations of Milky~Way-like galaxies, carried out with a moving-mesh magneto-hydrodynamics code and a detailed galaxy formation physics model. We find that the magnetic fields grow exponentially at early times owing to a small-scale dynamo with an e-folding time of roughly $100\,\rm{Myr}$ in the center of halos until saturation occurs around $z=2-3$, when the magnetic energy density reaches about $10\%$ of the turbulent energy density with a typical strength of $10-50\,\rm{μG}$. In the galactic centers the ratio between magnetic and turbulent energy remains nearly constant until $z=0$. At larger radii, differential rotation in the disks leads to linear amplification that typically saturates around $z=0.5$ to $z=0$. The final radial and vertical variations of the magnetic field strength can be well described by two joint exponential profiles, and are in good agreement with observational constraints. Overall, the magnetic fields have only little effect on the global evolution of the galaxies as it takes too long to reach equipartition. We also demonstrate that our results are well converged with numerical resolution.
description: 16 pages, 16 figures, accepted by MNRAS, section 4.1 (turbulent dynamo) extended substantially, now includes magnetic and kinetic power spectra
Phase diagram of incoherently driven strongly correlated photonic lattices
Creators: name: Biella, Alberto
name: Storme, Florent
name: Lebreuilly, José
name: Rossini, Davide
name: Fazio, Rosario
name: Carusotto, Iacopo
name: Ciuti, Cristiano
Publisher: name: arXiv
Year: 2017
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We explore theoretically the nonequilibrium photonic phases of an array of coupled cavities in presence of incoherent driving and dissipation. In particular, we consider a Hubbard model system where each site is a Kerr nonlinear resonator coupled to a two-level emitter, which is pumped incoherently. Within a Gutzwiller mean-field approach, we determine the steady-state phase diagram of such a system. We find that, at a critical value of the inter-cavity photon hopping rate, a second-order nonequilibrium phase transition associated with the spontaneous breaking of the $U(1)$ symmetry occurs. The transition from an incompressible Mott-like photon fluid to a coherent delocalized phase is driven by commensurability effects and not by the competition between photon hopping and optical nonlinearity. The essence of the mean-field predictions is corroborated by finite-size simulations obtained with matrix product operators and corner-space renormalization methods.
description: 12 pages, 9 figures
XMM-Newton and NuSTAR joint observations of Mrk 915: a deep look into the X-ray properties
Creators: name: Ballo, L.
name: Severgnini, P.
name: Della Ceca, R.
name: Braito, V.
name: Campana, S.
name: Moretti, A.
name: Vignali, C.
name: Zaino, A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report on the X-ray monitoring programme (covering slightly more than 11 days) carried out jointly by XMM-Newton and NuSTAR on the intermediate Seyfert galaxy Mrk 915. The light curves extracted in different energy ranges show a variation in intensity but not a significant change in spectral shape. The X-ray spectra reveal the presence of a two-phase warm absorber: a fully covering mildly ionized structure [log xi/(erg cm/s)~2.3, NH~1.3x10^21 cm-2] and a partial covering (~90 per cent) lower ionized one [log xi/(erg cm/s)~0.6, NH~2x10^22 cm-2]. A reflection component from distant matter is also present. Finally, a high-column density (NH~1.5x10^23 cm-2) distribution of neutral matter covering a small fraction of the central region is observed, almost constant, in all observations. Main driver of the variations observed between the datasets is a decrease in the intrinsic emission by a factor of ~1.5. Slight variations in the partial covering ionized absorber are detected, while the data are consistent with no variation of the total covering absorber. The most likely interpretation of the present data locates this complex absorber closer to the central source than the narrow line region, possibly in the broad line region, in the innermost part of the torus, or in between. The neutral obscurer may either be part of this same stratified structure or associated with the walls of the torus, grazed by (and partially intercepting) the line of sight.
description: 14 pages, 10 figures, 4 tables. Accepted for publication in MNRAS
Probing stochastic inter-galactic magnetic fields using blazar-induced gamma ray halo morphology
Creators: name: Duplessis, Francis
name: Vachaspati, Tanmay
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Inter-galactic magnetic fields can imprint their structure on the morphology of blazar-induced gamma ray halos. We show that the halo morphology arises through the interplay of the source's jet and a two-dimensional surface dictated by the magnetic field. Through extensive numerical simulations, we generate mock halos created by stochastic magnetic fields with and without helicity, and study the dependence of the halo features on the properties of the magnetic field. We propose a sharper version of the Q-statistics and demonstrate its sensitivity to the magnetic field strength, the coherence scale, and the handedness of the helicity. We also identify and explain a new feature of the Q-statistics that can further enhance its power.
description: v2: 23 pages, 17 figures. This version has an improved analysis of the electromagnetic cascade and matches the version published in JCAP
Polysymplectic formulation for topologically massive Yang-Mills field theory
Creators: name: Berra-Montiel, Jasel
name: del Río, Eslava
name: Molgado, Alberto
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 70S15, 70S05

description: We analyze the De Donder-Weyl covariant field equations for the topologically massive Yang-Mills theory. These equations are obtained through the Poisson-Gerstenhaber bracket described within the polysymplectic framework. Even though the Lagrangian defining the system of our interest is singular, we show that by appropriately choosing the polymomenta one may obtain an equivalent regular Lagrangian, thus avoiding the standard analysis of constraints. Further, our simple treatment allows us to only consider the privileged $(n-1)$-forms in order to obtain the correct field equations, in opposition to certain examples found in the literature.
description: 19 pages, no figures. Published version
Muon bundles as a sign of strangelets from the Universe
Creators: name: Kankiewicz, P.
name: Rybczynski, M.
name: Wlodarczyk, Z.
name: Wilk, G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Recently the CERN ALICE experiment, in its dedicated cosmic ray run, observed muon bundles of very high multiplicities, thereby confirming similar findings from the LEP era at CERN (in the CosmoLEP project). Originally it was argued that they apparently stem from the primary cosmic rays with a heavy masses. We propose an alternative possibility arguing that muonic bundles of highest multiplicity are produced by strangelets, hypothetical stable lumps of strange quark matter infiltrating our Universe. We also address the possibility of additionally deducing their directionality which could be of astrophysical interest. Significant evidence for anisotropy of arrival directions of the observed high multiplicity muonic bundles is found. Estimated directionality suggests their possible extragalactic provenance.
description: 12 pages, 8 figures. Manuscript accepted by The Astrophysical Journal
EPR-entangled Bose-Einstein condensates in state-dependent potentials: a dynamical study
Creators: name: Kurkjian, Hadrien
name: Pawlowski, Krzysztof
name: Sinatra, Alice
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study generation of non-local correlations by atomic interactions in a pair of bi-modal Bose-Einstein Condensates in state-dependent potentials including spatial dynamics. The wave-functions of the four components are described by combining a Fock state expansion with a time-dependent Hartree-Fock Ansatz, so that both the spatial dynamics and the local and non-local quantum correlations are accounted for. We find that despite the spatial dynamics, our protocole generates enough non-local entanglement to perform an EPR steering experiment with two spatially separated con-densates of a few thousands of atoms.
Effects of Braille and Typewriting Skills on Academic Performance of Primary School Pupils with Visual Impairment at Special Education School Tudun Maliki, Kano State.
Creators: name: Saifullahi Mukhtar Sadiq
Publisher: name: Zenodo
Year: 2023
Subjects: Braille, Braille literacy, Braille Skills, Typewriting Skills, Visual Impairment.

description: This is a Thesis of Master Degree in Special Education (Visual Impairment Area of Specialization).
Nonuniform currents and spins of relativistic electron vortices in a magnetic field
Creators: name: van Kruining, Koen
name: Hayrapetyan, Armen G.
name: Götte, Jörg B.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a relativistic description of electron vortex beams in a homogeneous magnetic field. Including spin from the beginning reveals that spin-polarized electron vortex beams have a complicated azimuthal current structure, containing small rings of counterrotating current between rings of stronger corotating current. Contrary to many other problems in relativistic quantum mechanics, there exists a set of vortex beams with exactly zero spin-orbit mixing in the highly relativistic and nonparaxial regime. The well defined phase structure of these beams is analogous to simpler scalar vortex beams, owing to the protection by the Zeeman effect. For states that do show spin-orbit mixing, the spin polarization across the beam is nonuniform rendering the spin and orbital degrees of freedom inherently inseparable.
description: 5 pages + supplemental material
Self consistent calculation of the nuclear composition in hot and dense stellar matter
Creators: name: Furusawa, Shun
name: Mishustin, Igor
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We investigate the mass fractions and in-medium properties of heavy nuclei in stellar matter at characteristic densities and temperatures for supernova (SN) explosions. The individual nuclei are described within the compressible liquid-drop model taking into account modifications of bulk, surface and Coulomb energies. The equilibrium properties of nuclei and the full ensemble of heavy nuclei are calculated self-consistently. It is found that heavy nuclei in the ensemble are either compressed or decompressed depending on the isospin asymmetry of the system. The compression or decompression has a little influence on the binding energies, total mass fractions and average mass numbers of heavy nuclei, although the equilibrium densities of individual nuclei themselves are changed appreciably above one hundredth of normal nuclear density. We find that nuclear structure in single nucleus approximation deviates from the actual one obtained in the multi-nucleus description, since the density of free nucleons is different between these two descriptions. This study indicates that a multi-nucleus description is required to realistically account for in-medium effects on the nuclear structure in supernova matter.
description: 26 pages, 10 figures, accepted for publication in Phys. Rev. C
Level crossings induced by a longitudinal coupling in the transverse field Ising chain
Creators: name: Vionnet, Grégoire
name: Kumar, Brijesh
name: Mila, Frédéric
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the effect of antiferromagnetic longitudinal coupling on the one-dimensional transverse field Ising model with nearest-neighbour couplings. In the topological phase where, in the thermodynamic limit, the ground state is twofold degenerate, we show that, for a finite system of N sites, the longitudinal coupling induces N level crossings between the two lowest lying states as a function of the field. We also provide strong arguments suggesting that these N level crossings all appear simultaneously as soon as the longitudinal coupling is switched on. This conclusion is based on perturbation theory, and a mapping of the problem onto the open Kitaev chain, for which we write down the complete solution in terms of Majorana fermions.
description: 9 pages, 11 figures; v2: minor changes
Possible $D^{(*)}\bar{D}^{(*)}$ and $B^{(*)}\bar{B}^{(*)}$ molecular states in the extended constituent quark models
Creators: name: Yang, You-Chang
name: Tan, Zhi-Yun
name: Ping, Jialun
name: Zong, Hong-Shi
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The possible neutral $D^{(*)}\bar{D}^{(*)}$ and $B^{(*)}\bar{B}^{(*)}$ molecular states are studied in the framework of the constituent quark models, which is extended by including the $s$-channel one gluon exchange. Using different types of quark-quark potentials, we solve the four-body Schrödinger equation by means of the Gaussian expansion method. The bound states of $D^{(*)}\bar{D}^{(*)}$ with $J^{PC}=1^{++},2^{++}$ and $B^{(*)}\bar{B}^{(*)}$ with $J^{PC}=0^{++},1^{+-},1^{++},2^{++}$ are obtained. The molecular states $D^{*}\bar{D}$ with $J^{PC}=1^{++}$ and $B^{*}\bar{B}$ with $J^{PC}=1^{+-}$ are good candidates for the $X(3872)$ and $Z^0_b(10610)$, respectively.
description: 8 pages, 2 figures
Computers-Managing Information for the mass media.pdf
Creators: name: Inyang, Mary  Imo
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 399999
subject: Other education not elsewhere classified

description: Computers, generally are regarded with outstanding excitement and fascination. The excitement stems from their versatility, and fascination from their speed. The term Computer as stated by Gordorn B. Davis can logically be applied to any calculating device.” This is so because Computers were primarily built for that purpose…