cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Foundations of success: driving change through successful research collaborations. Learning Brief.
Creators: name: Wilbur, Jane
Publisher: name: London School of Hygiene & Tropical Medicine
Year: 2022

description: Translating disability-inclusive WASH policies into practice: lessons learned from Cambodia and Bangladesh was a two-year disability-inclusive research study. It was a collaborative study led by the London School of Hygiene & Tropical Medicine (LSHTM) in partnership with WaterAid and Organisations of Persons with Disabilities in Cambodia and Bangladesh. The research aimed to develop evidence-based guidance for governments in low-and middle-income countries about implementing inclusive water, sanitation, and hygiene at scale. The LSHTM Principal Investigator originally planned to visit each country to guide and mentor the research teams to gather qualitative data in person. The research design changed because of the COVID-19 pandemic and national lockdowns. Instead, the Principal Investigator supported the team from the UK and data was collected remotely. In Cambodia, the Principal Investigator and the research team collaboratively analysed, documented, and disseminated the study. A range of publications was produced, including academic journal articles, accessible briefing notes summarising these, and blogs. Study findings were communicated through virtual and face-to-face workshops, including with people with disabilities and their caregivers who participated in the study. Cambodian actors with disabilities performed key findings and recommendations at the start of workshops to bring the study to life. Recommendations were co-developed with external stakeholders. This Learning Brief documents the process the Principal Investigator followed to remotely support and mentor the research team in Cambodia. The Brief captures the strengths and limitations of approaches and learning gained. It includes recommendations for organisations that remotely support non-academics to conduct ethical research in low-and middle-income countries.
Uranomys ruddi Dollman 1909
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Uranomys
Uranomys ruddi

description: Uranomys ruddi Dollman, 1909. Ann. Mag. Nat. Hist., ser. 8, 4:552. TYPE LOCALITY: Kenya, Mt. Elgon, Kirui. DISTRIBUTION: Senegal to Kenya to Mozambique. ISIS NUMBER: 5301410011065001001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 5), pp. 504-560 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 558, DOI: 10.5281/zenodo.7353037
Quantum spin-liquid behavior in the spin-1/2 random Heisenberg antiferromagnet on the triangular lattice
Creators: name: Watanabe, Ken
name: Kawamura, Hikaru
name: Nakano, Hiroki
name: Sakai, Toru
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Experimental quest for the hypothetical "quantum spin liquid" state has recently met a few promising candidate materials including organic salts κ-(ET)2Cu2(CN)3 and EtMe3Sb[Pd(dmit)2]2, S=1/2 triangular-lattice Heisenberg antiferromagnets consisting of molecular dimers. These compounds exhibit no magnetic ordering nor the spin freezing down to very low temperature, while various physical quantities exhibit gapless behaviors. Recent dielectric measurements revealed the glassy dielectric response suggesting the random freezing of the electric polarization degrees of freedom. Inspired by this observation, we propose as a minimal model of the observed quantum spin-liquid behavior the S=1/2 antiferromagnetic Heisenberg on the triangular lattice with a quenched randomness in the exchange interaction. We study both zero- and finite-temperature properties of the model by an exact diagonalization method, to find that when the randomness exceeds a critical value the model exhibits a quantum spin-liquid ground state. This randomness-induced quantum spin-liquid state exhibits gapless behaviors including the temperature-linear specific heat. The results provide a consistent explanation of the recent experimental observations on organic salts.
description: Two figures (Figs.3&5) and seven references added. Texts expanded. To appear in J. Phys. Soc. Jpn
A multi-phenotypic cancer model with cell plasticity
Creators: name: Zhou, Da
name: Wang, Yue
name: Wu, Bin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cell Behavior (q-bio.CB)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: The conventional cancer stem cell (CSC) theory indicates a hierarchy of CSCs and non-stem cancer cells (NSCCs), that is, CSCs can differentiate into NSCCs but not vice versa. However, an alternative paradigm of CSC theory with reversible cell plasticity among cancer cells has received much attention very recently. Here we present a generalized multi-phenotypic cancer model by integrating cell plasticity with the conventional hierarchical structure of cancer cells. We prove that under very weak assumption, the nonlinear dynamics of multi-phenotypic proportions in our model has only one stable steady state and no stable limit cycle. This result theoretically explains the phenotypic equilibrium phenomena reported in various cancer cell lines. Furthermore, according to the transient analysis of our model, it is found that cancer cell plasticity plays an essential role in maintaining the phenotypic diversity in cancer especially during the transient dynamics. Two biological examples with experimental data show that the phenotypic conversions from NCSSs to CSCs greatly contribute to the transient growth of CSCs proportion shortly after the drastic reduction of it. In particular, an interesting overshooting phenomenon of CSCs proportion arises in three-phenotypic example. Our work may pave the way for modeling and analyzing the multi-phenotypic cell population dynamics with cell plasticity.
description: 29 pages,6 figures
Strain-tunable orbital, spin-orbit, and optical properties of monolayer transition-metal dichalcogenides
Creators: name: Zollner, Klaus
name: Faria Junior, Paulo E.
name: Fabian, Jaroslav
Publisher: name: Universität Regensburg
Year: 2019
Subjects: subject: 530 Physik

description: When considering transition-metal dichalcogenides (TMDCs) in van der Waals heterostructures for periodic ab initio calculations, usually, lattice mismatch is present, and the TMDC needs to be strained. In this study we provide a systematic assessment of biaxial strain effects on the orbital, spin-orbit, and optical properties of the monolayer TMDCs using ab initio calculations. We complement our analysis with a minimal tight-binding Hamiltonian that captures the low-energy bands of the TMDCs around the K and K′ valleys. We find characteristic trends of the orbital and spin-orbit parameters as a function of the biaxial strain. Specifically, the orbital gap decreases linearly, while the valence (conduction) band spin splitting increases (decreases) nonlinearly in magnitude when the lattice constant increases. Furthermore, employing the Bethe-Salpeter equation and the extracted parameters, we show the evolution of several exciton peaks, with biaxial strain, on different dielectric surroundings, which are particularly useful for interpreting experiments studying strain-tunable optical spectra of TMDCs.
From Webs to Polylogarithms
Creators: name: Gardi, Einan
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute a class of diagrams contributing to the multi-leg soft anomalous dimension through three loops, by renormalizing a product of semi-infinite non-lightlike Wilson lines in dimensional regularization. Using non-Abelian exponentiation we directly compute contributions to the exponent in terms of webs. We develop a general strategy to compute webs with multiple gluon exchanges between Wilson lines in configuration space, and explore their analytic structure in terms of $α_{ij}$, the exponential of the Minkowski cusp angle formed between the lines $i$ and $j$. We show that beyond the obvious inversion symmetry $α_{ij}\to 1/α_{ij}$, at the level of the symbol the result also admits a crossing symmetry $α_{ij}\to -α_{ij}$, relating spacelike and timelike kinematics, and hence argue that in this class of webs the symbol alphabet is restricted to $α_{ij}$ and $1-α_{ij}^2$. We carry out the calculation up to three gluons connecting four Wilson lines, finding that the contributions to the soft anomalous dimension are remarkably simple: they involve pure functions of uniform weight, which are written as a sum of products of polylogarithms, each depending on a single cusp angle. We conjecture that this type of factorization extends to all multiple-gluon-exchange contributions to the anomalous dimension.
description: 64 pages, 8 figures
Uromys Peters 1867
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Uromys

description: Uromys Peters, 1867. Monatsb. Preuss. Akad. Wiss. Berlin, p. 343. REVIEWED BY: J. I. Menzies (JIM); C. H. S. Watts (CHSW) (Australia); A. C. Ziegler (ACZ)(New Guinea). COMMENT: Generic relationships reviewed by Musser, 1981, Bull. Am. Mus. Nat. Hist., 169(2):67- 176; includes Cyromys and Gymnomys. ISIS NUMBER: 5301410011066000000.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 5), pp. 504-560 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 558, DOI: 10.5281/zenodo.7353037
Black Holes as Temporal Regulators
Creators: name: Essam, Allou
Publisher: name: Zenodo
Year: 2025
Subjects: subject: Pure Time Theory
subject: PTT
subject: black holes
subject: Temporal field
subject: T_relax
subject: cosmology
subject: Time ontology
subject: neutron star mergers
subject: Hawking radiation
subject: Neutron stars
subject: information paradox
subject: dark matter alternative
subject: dark matter
subject: scalar field
subject: SPARC data
subject: Fractal Geometry in Physics
subject: Black Hole Temporal Anchoring
subject: Black Hole Stabilization
subject: Temporal Anchoring Effect
subject: Temporal Literacy
subject: Unity of Constants Framework
subject: Dimensionless Unification
subject: Gradient-Based Metric
subject: Quantum-Classical Bridge
subject: Isosurfaces of Temporal Field
subject: Isosurfaces
subject: Philosophy of Time

description: Since the first presentation of the Pure Time Theory (PTT), one recurring question has followed me: how does this framework interpret black holes? I often replied intuitively, suggesting that they might act as “temporal tensors” or regulators. But I never had the formal, mathematical foundation to affirm it.

This article provides that foundation. It introduces a rigorous reinterpretation of black holes within the Pure Time Theory, where the scalar field T_relax governs the emergence, coherence, and stability of all physical structures. In this view, black holes are not gravitational singularities, but stabilizing condensates of time, formed in response to critical local overloads, especially during events like neutron star mergers.

We show how the activation of a localized source term S(x) in the governing equation of T_relax restores temporal balance in high-density regions, preventing divergence. This mechanism naturally explains galactic structure and rotation without invoking dark matter.

We also confront five foundational claims of classical black hole physics, especially those proposed by Stephen Hawking, by offering alternative interpretations rooted in temporal field dynamics: no singularity, no paradox, no thermodynamic finality. Instead, black holes emerge as active regulators of cosmic time.

The model is consistent with SPARC galactic data (chi²_red = 0.93) and reinforces the view that temporal causality—not spatial curvature—is the key to understanding cosmic coherence. Black holes are no longer mysterious anomalies but signs of divine precision—knots of time that restore balance when needed.
80hk Momentum Separation with Bloch Oscillations in an Optically Guided Atom Interferometer
Creators: name: McDonald, Gordon D.
name: Kuhn, Carlos C. N.
name: Bennetts, Shayne
name: Debs, John E.
name: Hardman, Kyle S.
name: Johnsson, Mattias
name: Close, John D.
name: Robins, Nicholas P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate phase sensitivity in a horizontally guided, acceleration-sensitive atom interferometer with a momentum separation of 80hk between its arms. A fringe visibility of 7% is observed. Our coherent pulse sequence accelerates the cold cloud in an optical waveguide, an inherently scalable route to large momentum separation and high sensitivity. We maintain coherence at high momentum separation due to both the transverse confinement provided by the guide, and our use of optical delta-kick cooling on our cold-atom cloud. We also construct a horizontal interferometric gradiometer to measure the longitudinal curvature of our optical waveguide.
description: 6 pages, 6 figures
IX Международная научно-практическая конференция «РАЗВИТИЕ СОВРЕМЕННОЙ НАУКИ И ТЕХНОЛОГИЙ В УСЛОВИЯХ ТРАНСФОРМАЦИОННЫХ ПРОЦЕССОВ»
Creators: name: ООО "Институт развития образования и консалтинга"
Publisher: name: ООО "Институт развития образования и консалтинга"
Year: 2023

description: IX Международная научно-практическая конференция «РАЗВИТИЕ СОВРЕМЕННОЙ НАУКИ И ТЕХНОЛОГИЙ В УСЛОВИЯХ ТРАНСФОРМАЦИОННЫХ ПРОЦЕССОВ»
MPEC 2023-V184 : 2023 VG6
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 VG6

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.
Type IIB flux compactifications on twistor bundles
Creators: name: Imaanpur, Ali
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct a U(1) bundle over N(1,1), usually considered as an SO(3) bundle over CP^2, and show that type IIB supergravity can be consistently compactified over it. With the five form flux turned on, there is a solution for which the metric becomes Einstein. We also turn on 3-form fluxes and show that there is a one parameter family of solutions. In particular, there is a limiting solution of large 3-form fluxes for which two U(1) fiber directions of the metric shrink to zero size. We also discuss compactifications over N(1,1) to AdS_3. All solutions turn out to be non-supersymmetric.
description: 12 pages, typos fixed, minor corrections
Grand Yukawonification : SO(10) grand unified theories with dynamical Yukawa couplings
Creators: name: Aulakh, Charanjit S.
name: Khosa, Charanjit K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Renormalizable SO(10) grand unified theories (GUTs), extended by $O(N_g)_F$ family gauge symmetry, generate minimal supersymmetric Standard Model flavour structure dynamically via vacuum expectation values of "Yukawon" Higgs multiplets. For concrete illustration and calculability, we work with the fully realistic minimal supersymmetric GUTs based on the $\bf{210 \oplus {\overline{126}}\oplus 126} $ GUT Higgs system - which were already parameter counting minimal relative to other realistic models. $SO(10)$ fermion Higgs channels $\bf{\overline{126},10}$($\mathbf{120}$) extend to symmetric(antisymmetric) representations of $O(N_g)_F$, while $\mathbf{210,126}$ are symmetric. $N_g=3$ dynamical Yukawa generation reduces the matter fermion Yukawas from 15 to 3 (21 to 5) without (with) the $\bf{120}$ Higgs. Yukawon GUTs are thus ultraminimal in parameter counting terms. Consistent symmetry breaking is ensured by a hidden sector Bajc-Melfo(BM) superpotential with a pair of symmetric $O(N_g)$ multiplets $ϕ,S $, of which the latter's singlet part $S_s$ breaks supersymmetry and the traceless part $\hat S $ furnishes flat directions to cancel the $O(N_g)$ D-term contributions of the visible sector. Novel dark matter candidates linked to flavour symmetry arise from both the BM sector and GUT sector minimal supersymmetric Standard Model singlet pseudo-Goldstones. These relics may be viable light($< 50 $ GeV) cold dark matter as reported by DAMA/LIBRA. In contrast to the new minimal supersymmetric SO(10) grand unified theory (NMSGUT) even sterile neutrinos can appear in certain branches of the flavour symmetry breaking without the tuning of couplings.
description: Published version with 3 Generation solutions and numerous other improvements
Uromys anak Thomas 1907
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Uromys
Uromys anak

description: Uromys anak Thomas, 1907. Ann. Mag. Nat. Hist., 20:72. TYPE LOCALITY: Papua New Guinea, Central Prov., Brown River, Efogi, “not less than” 1220 m. DISTRIBUTION: Interior New Guinea. ISIS NUMBER: 5301410011066001001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 5), pp. 504-560 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 558, DOI: 10.5281/zenodo.7353037
Integration of Static and Dynamic Analysis Techniques for Checking Noninterference
Creators: name: Beckert, Bernhard
name: Herda, Mihai
name: Kirsten, Michael
name: Tyszberowicz, Shmuel
Publisher: name: Springer
Year: 2020
Subjects: Information-flow security
Deductive verification
Software testing
Program slicing

description: In this article, we present an overview of recent combinations of deductive program verification and automatic test generation on the one hand and static analysis on the other hand, with the goal of checking noninterference. Noninterference is the non-functional property that certain confidential information cannot leak to certain public output, i.e., the confidentiality of that information is always preserved. We define the noninterference properties that are checked along with the individual approaches that we use in different combinations. In one use case, our framework for checking noninterference employs deductive verification to automatically generate tests for noninterference violations with an improved test coverage. In another use case, the framework provides two combinations of deductive verification with static analysis based on system dependence graphs to prove noninterference, thereby reducing the effort for deductive verification.
RNP's rebranding
Creators: name: Tsirakis, Stela
Publisher: name: Zenodo
Year: 2023
Subjects: brand
rebranding
marketing
communications
RNP

description: This presentation explores the why and the how behind the latest RNP's rebranding. The presentation was delivered during the meeting of the Special Interest Group on Marketing and Communications (SIG-marcomms) at TNC23 in Tirana, Albania.
Reflected Generalized Beta Inverse Weibull Distribution: definition and properties
Creators: name: Elbatal, Ibrahim
name: Condino, Francesca
name: Domma, Filippo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistics Theory (math.ST)
subject: Methodology (stat.ME)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 60E05, 62E20

description: In this paper we study a broad class of distribution functions which is defined by means of reflected generalized beta distribution. This class includes that of Beta-generated distribution as a special case. In particular, we use this class to extend the Inverse Weibull distribution in order to obtain the Reflected Generalized Beta Inverse Weibull Distribution.For this new distribution, moments, entropy, order statistics and a reliability measure are derived. The link between the Inverse Weibull and the Dagum distribution is generalized. Then the maximum likelihood estimators of the parameters are examined and the observed Fisher information matrix provided. Finally, the usefulness of the model is illustrated by means of an application to real data.
description: Baseline distribution changed, according to Jones (2012) [see references]
Analyse des mécanismes d'accrochage et de décrochage lors de la transition entre le primaire et le secondaire, puis proposition de pistes de solutions pour la prévention du décrochage au BENIN
Creators: name: Alladatin, Judicaël
name: Gnanguenon, Augustin M.
Publisher: name: Zenodo
Year: 2022
Subjects: Transition scolaire, performance scolaire, Bénin, décrochage scolaire, accrochage scolaire.

description: Passer de l’environnement de l’école primaire à l’école secondaire est à la fois une étape importante et un défi auquel sont confrontés la plupart des élèves. Les défis que présente cette transition sont dus aux disparités entre les cultures de l’école primaire et secondaire (Zeedyk et al., 2003). Dans une perspective d’appréhender la particularité de la situation dans certains pays francophones, le projet Transco a analysé l’accrochage et le décrochage lors de la transition primaire-secondaire dans 3 pays francophones d’Afrique subsaharienne et d’Haïti. Les résultats présentés dans cette synthese technique ne concernent que le Bénin.
description: Ce projet s'inscrit dans le cadre du programme APPRENDRE mis en oeuvre par l'Agence universitaire de la Francophonie (AUF) avec l'appui de l'Agence Française de Développement.
title: Mary W. Standlee Papers
Creators: name: Uniformed Services University of the Health Sciences
Publisher: name: University Archives, Uniformed Services University of the Health Sciences, Bethesda, Maryland 20814
Year: 2010
Subjects: classificationCode: 3
subject: FOS: Medical and health sciences
classificationCode: 6.1
subject: FOS: History and archaeology

description: USUHS Archives Finding Aid
Mary W. Standlee Papers
2010
Flat limits of curved interacting cosmic fluids
Creators: name: Cotsakis, Spiros
name: Kittou, Georgia
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study curved isotropic cosmologies filled with two interacting fluids near their time singularities. We find that a number of these universes asymptote to flat limits in the sense that their asymptotic properties become indistinguishable from those of flat Friedmann-Robertson-Walker models on approach to the singularity along any asymptotic direction. In particular, there are no essential singularities in these models. We discuss connections of this result with possible extensions of the cosmic no hair theorem to the case of two interacting fluids, and also provide links to a quantum cosmological treatment of real and complex Euclidean such solutions.
description: v2: 26 pages, new mathematical appendix, improved readability, version to appear in Phys. Rev. D
Uromys caudimaculatus
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Uromys
Uromys caudimaculatus

description: Uromys caudimaculatus (Krefft, 1867). Proc. Zool. Soc. Lond., 1867:316. TYPE LOCALITY: Australia, Queensland, Cape York. DISTRIBUTION: New Guinea; Aru Isis.; Kei Isis.; Waigeo Isl.; N. Queensland (Australia). COMMENT: Includes sherrini and exilis; see Ride, 1970:248. ISIS NUMBER: 5301410011066002001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 5), pp. 504-560 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 558, DOI: 10.5281/zenodo.7353037
description: {"references": ["Ride, W. D. L. 1970. A guide to the native mammals of Australia. Oxford University Press, Melbourne, 249 pp."]}
CLASH: A Census of Magnified Star-Forming Galaxies at z ~ 6-8
Creators: name: Bradley, L. D.
name: Zitrin, A.
name: Coe, D.
name: Bouwens, R.
name: Postman, M.
name: Balestra, I.
name: Grillo, C.
name: Monna, A.
name: Rosati, P.
name: Seitz, S.
name: Host, O.
name: Lemze, D.
name: Moustakas, J.
name: Moustakas, L. A.
name: Shu, X.
name: Zheng, W.
name: Broadhurst, T.
name: Carrasco, M.
name: Jouvel, S.
name: Koekemoer, A.
name: Medezinski, E.
name: Meneghetti, M.
name: Nonino, M.
name: Smit, R.
name: Umetsu, K.
name: Bartelmann, M.
name: Benitez, N.
name: Donahue, M.
name: Ford, H.
name: Infante, L.
name: Jimenez-Teja, Y.
name: Kelson, D.
name: Lahav, O.
name: Maoz, D.
name: Melchior, P.
name: Merten, J.
name: Molino, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We utilize 16 band Hubble Space Telescope (HST) observations of 18 lensing clusters obtained as part of the Cluster Lensing And Supernova survey with Hubble (CLASH) Multi-Cycle Treasury program to search for $z\sim6-8$ galaxies. We report the discovery of 204, 45, and 13 Lyman-break galaxy candidates at $z\sim6$, $z\sim7$, and $z\sim8$, respectively, identified from purely photometric redshift selections. This large sample, representing nearly an order of magnitude increase in the number of magnified star-forming galaxies at $z\sim 6-8$ presented to date, is unique in that we have observations in four WFC3/UVIS UV, seven ACS/WFC optical, and all five WFC3/IR broadband filters, which enable very accurate photometric redshift selections. We construct detailed lensing models for 17 of the 18 clusters to estimate object magnifications and to identify two new multiply lensed $z \gtrsim 6$ candidates. The median magnifications over the 17 clusters are 4, 4, and 5 for the $z\sim6$, $z\sim7$, and $z\sim8$ samples, respectively, over an average area of 4.5 arcmin$^2$ per cluster. We compare our observed number counts with expectations based on convolving "blank" field UV luminosity functions through our cluster lens models and find rough agreement down to $\sim27$ mag, where we begin to suffer significant incompleteness. In all three redshift bins, we find a higher number density at brighter observed magnitudes than the field predictions, empirically demonstrating for the first time the enhanced efficiency of lensing clusters over field surveys. Our number counts also are in general agreement with the lensed expectations from the cluster models, especially at $z\sim6$, where we have the best statistics.
description: Accepted for publication in the Astrophysical Journal, 25 pages, 13 figures, 7 tables
Uromys imperator
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Uromys
Uromys imperator

description: Uromys imperator (Thomas, 1888). Ann. Mag. Nat. Hist., 1:157. TYPE LOCALITY: Solomon Isis., Guadalcanal Isl., Aola. DISTRIBUTION: Guadalcanal Isl. (Solomon Isis.). ISIS NUMBER: 5301410011066003001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 5), pp. 504-560 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 558, DOI: 10.5281/zenodo.7353037
Quark-Novae Ia in the Hubble diagram: Implications For Dark Energy
Creators: name: Ouyed, Rachid
name: Koning, Nico
name: Leahy, Denis
name: Staff, Jan E.
name: Cassidy, Daniel T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The accelerated expansion of the Universe was proposed through the use of Type-Ia SNe as standard candles. The standardization depends on an empirical correlation between the stretch/color and peak luminosity of the light curves. The use of Type Ia SN as standard candles rests on the assumption that their properties (and this correlation) do not vary with red-shift. We consider the possibility that the majority of Type-Ia SNe are in fact caused by a Quark-Nova detonation in a tight neutron-star-CO-white-dwarf binary system; a Quark-Nova Ia. The spin-down energy injected by the Quark Nova remnant (the quark star) contributes to the post-peak light curve and neatly explains the observed correlation between peak luminosity and light curve shape. We demonstrate that the parameters describing Quark-Novae Ia are NOT constant in red-shift. Simulated Quark-Nova Ia light curves provide a test of the stretch/color correlation by comparing the true distance modulus with that determined using SN light curve fitters. We determine a correction between the true and fitted distance moduli which when applied to Type-Ia SNe in the Hubble diagram recovers the Omega_M = 1 cosmology. We conclude that Type-Ia SNe observations do not necessitate the need for an accelerating expansion of the Universe (if the observed SNe-Ia are dominated by QNe-Ia) and by association the need for Dark Energy.
description: 22 pages, 6 figures. Accepted for publication in Research in Astronomy and Astrophysics
Cloistered Baryogenesis
Creators: name: Sierra, D. Aristizabal
name: Fong, Chee Sheng
name: Nardi, Enrico
name: Peinado, Eduardo
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The cosmological matter-antimatter asymmetry can arise from the baryon number conserving CP asymmetry in two body decays of heavy particles, when the two final states carry equal and opposite baryon number, and one couples directly or indirectly to electroweak sphalerons so that its baryon asymmetry gets partly reprocessed into a lepton asymmetry, while the other remains chemically decoupled from the thermal bath with its baryon content frozen. After sphaleron switchoff the decay of the decoupled particles inject in the thermal plasma an unbalanced baryon asymmetry, giving rise to baryogenesis. We highlight the features of this mechanism in a type-I seesaw model extended by adding a new colored scalar coupled to the heavy Majorana neutrinos. If the colored scalar has an O(TeV) mass, it would leave at the LHC a characteristic signature throughout all layers of the detectors.
description: 18 pages, 2 figures; V2 references added, accepted for publication in JCAP
Constraining Non-thermal and Thermal properties of Dark Matter
Creators: name: Dev, P. S. Bhupal
name: Mazumdar, Anupam
name: Qutub, Saleh
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We describe the evolution of Dark Matter (DM) abundance from the very onset of its creation from inflaton decay under the assumption of an instantaneous reheating. Based on the initial conditions such as the inflaton mass and its decay branching ratio to DM, reheating temperature, and the DM mass and interaction rate with the thermal bath, the DM particles can either thermalize (fully/partially) with the primordial bath or remain non-thermal throughout their evolution history. In the thermal case, the final abundance is set by the standard freeze-out mechanism for large annihilation rates, irrespective of the initial conditions. For smaller annihilation rates, it can be set by the freeze-in mechanism, also independent of the initial abundance, provided it is small to begin with. For even smaller interaction rates, the DM decouples while being non-thermal, and the relic abundance will be essentially set by the initial conditions. We put model-independent constraints on the DM mass and annihilation rate from over-abundance by exactly solving the relevant Boltzmann equations, and identify the thermal freeze-out, freeze-in and non-thermal regions of the allowed parameter space. We highlight a generic fact that inflaton decay to DM inevitably leads to an overclosure of the Universe for a large range of DM parameter space, and thus poses a stringent constraint that must be taken into account while constructing models of DM. For the thermal DM region, we also show the complementary constraints from indirect DM search experiments, Big Bang Nucleosynthesis, Cosmic Microwave Background, Planck measurements, and theoretical limits due to the unitarity of S-matrix. For the non-thermal DM scenario, we show the allowed parameter space in terms of the inflaton and DM masses for a given reheating temperature, and compute the comoving free-streaming length to identify the hot, warm and cold DM regimes.
description: 29 pages, 8 figures; some clarifications and references added; published version
Uromys neobrittanicus Tate and Archbold 1935
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Uromys
Uromys neobrittanicus

description: Uromys neobrittanicus Tate and Archbold, 1935. Am. Mus. Novit., 803:4. TYPE LOCALITY: Papua New Guinea, New Britain Isl. DISTRIBUTION: New Britain (Bismarck Arch., Papua New Guinea). ISIS NUMBER: 5301410011066004001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 5), pp. 504-560 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 558, DOI: 10.5281/zenodo.7353037
The Stagger-grid: A Grid of 3D Stellar Atmosphere Models - II. Horizontal and Temporal Averaging and Spectral Line Formation
Creators: name: Magic, Zazralt
name: Collet, Remo
name: Hayek, Wolfgang
name: Asplund, Martin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study the implications of averaging methods with different reference depth scales for 3D hydrodynamical model atmospheres computed with the Stagger-code. The temporally and spatially averaged (hereafter denoted as <3D>) models are explored in the light of local thermodynamic equilibrium (LTE) spectral line formation by comparing spectrum calculations using full 3D atmosphere structures with those from <3D> averages. We explore methods for computing mean <3D> stratifications from the Stagger-grid time-dependent 3D radiative hydro- dynamical atmosphere models by considering four different reference depth scales (geometrical depth, column-mass density, and two optical depth scales). Furthermore, we investigate the influence of alternative averages (logarithmic or enforced hydrostatic equilibrium, flux-weighted temperatures). For the line formation we compute curves of growth for Fe i and Fe ii lines in LTE . The resulting <3D> stratifications for the four reference depth scales can be considerably different. We find typically that in the upper atmosphere and in the superadiabatic region just below the optical surface, where the temperature and density fluctuations are highest, the differences become considerable and increase for higher Teff, lower logg, and lower [Fe/H]. The differential comparison of spectral line formation shows distinctive differences depending on which <3D> model is applied. The averages over layers of constant column-mass density yield the best mean <3D> representation for LTE line formation, while the averages on layers at constant geometrical height are the least appropriate. Unexpectedly, the usually preferred averages over layers of constant optical depth are prone to the increasing interference of the reversed granulation towards higher effective temperature, in particular at low metallicity.
description: Accepted for publication in A&A, 18 pages, 16 figures
Dense baryonic matter in conformally-compensated hidden local symmetry: Vector manifestation and chiral symmetry restoration
Creators: name: Ma, Yong-Liang
name: Harada, Masayasu
name: Lee, Hyun Kyu
name: Oh, Yongseok
name: Park, Byung-Yoon
name: Rho, Mannque
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We find that, when the dilaton is implemented as a (pseudo-)Nambu-Goldstone boson using a conformal compensator or "conformon" in a hidden gauge symmetric Lagrangian written to $O(p^4)$ from which baryons arise as solitons, namely, skyrmions, the vector manifestation and chiral symmetry restoration at high density predicted in hidden local symmetry theory --- which is consistent with Brown-Rho scaling --- are lost or sent to infinite density. It is shown that they can be restored if in medium the behavior of the $ω$ field is taken to deviate from that of the $ρ$ meson in such a way that the flavor $U(2)$ symmetry is strongly broken at increasing density. The hitherto unexposed crucial role of the $ω$ meson in the structure of elementary baryon and multibaryon systems is uncovered in this work. In the state of half-skyrmions to which the skyrmions transform at a density $n_{1/2}^{} \gtrsim n_0^{}$ (where $n_0^{}$ is the normal nuclear matter density), characterized by the vanishing (space averaged) quark condensate but nonzero pion decay constant, the nucleon mass remains more or less constant at a value $\gtrsim$ 60 \% of the vacuum value indicating a large component of the nucleon mass that is not associated with the spontaneous breaking of chiral symmetry. We discuss its connection to the chiral-invariant mass $m_0^{}$ that figures in the parity-doublet baryon model.
Ioana's superrigidity theorem and orbit equivalence relations
Creators: name: Coskey, Samuel
Publisher: name: arXiv
Year: 2013
Subjects: subject: Logic (math.LO)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 37A20, 20K15, 03E15

description: In this expository article, we give a survey of Adrian Ioana's cocycle superrigidity theorem for profinite actions of Property (T) groups, and its applications to ergodic theory and set theory. In addition to a statement and proof of Ioana's theorem, this article features: * An introduction to rigidity, including a crash course in Borel cocycles and a summary of some of the best-known superrigidity theorems; * Some easy applications of superrigidity, both to ergodic theory (orbit equivalence) and set theory (Borel reducibility); and * A streamlined proof of Simon Thomas's theorem that the classification of torsion-free abelian groups of finite rank is intractable.
description: This article is expository
Uromys rex
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Uromys
Uromys rex

description: Uromys rex (Thomas, 1888). Ann. Mag. Nat. Hist., 1:157. TYPE LOCALITY: Solomon Isis., Guadalcanal Isl., Aola. DISTRIBUTION: Guadalcanal Isl. (Solomon Isis.). ISIS NUMBER: 5301410011066005001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 5), pp. 504-560 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 558, DOI: 10.5281/zenodo.7353037
Dark matter cores in the Fornax and Sculptor dwarf galaxies: joining halo assembly and detailed star formation histories
Creators: name: Amorisco, Nicola C.
name: Zavala, Jesus
name: de Boer, Thomas J. L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We combine the detailed Star Formation Histories of the Fornax and Sculptor dwarf Spheroidals with the Mass Assembly History of their dark matter (DM) halo progenitors to estimate if the energy deposited by Supernova type II (SNeII) is sufficient to create a substantial DM core. Assuming the efficiency of energy injection of the SNeII into DM particles is $ε_{\rm gc}=0.05$, we find that a single early episode, $z \gtrsim z_{\rm infall}$, that combines the energy of all SNeII due to explode over 0.5 Gyr, is sufficient to create a core of several hundred parsecs in both Sculptor and Fornax. Therefore, our results suggest that it is energetically plausible to form cores in Cold Dark Matter (CDM) halos via early episodic gas outflows triggered by SNeII. Furthermore, based on CDM merger rates and phase-space density considerations, we argue that the probability of a subsequent complete regeneration of the cusp is small for a substantial fraction of dwarf-size haloes.
description: ApJL accepted version
Accelerated Event-by-Event Neutrino Oscillation Reweighting with Matter Effects on a GPU
Creators: name: Calland, R. G.
name: Kaboth, A. C.
name: Payne, D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Oscillation probability calculations are becoming increasingly CPU intensive in modern neutrino oscillation analyses. The independency of reweighting individual events in a Monte Carlo sample lends itself to parallel implementation on a Graphics Processing Unit. The library "Prob3++" was ported to the GPU using the CUDA C API, allowing for large scale parallelized calculations of neutrino oscillation probabilities through matter of constant density, decreasing the execution time by a factor of 75, when compared to performance on a single CPU.
description: Final Update: Post submission update Updated version: quantified the difference in event rates for binned and event-by-event reweighting with a typical binning scheme. Improved formatting of references
Heterostructures of graphene and hBN: Electronic, spin-orbit, and spin relaxation properties from first principles
Creators: name: Zollner, Klaus
name: Gmitra, Martin
name: Fabian, Jaroslav
Publisher: name: Universität Regensburg
Year: 2019
Subjects: subject: 530 Physik

description: We perform extensive first-principles calculations for heterostructures composed of monolayer graphene and hexagonal boron nitride (hBN). Employing a symmetry-derived minimal tight-binding model, we extract orbital and spin-orbit coupling (SOC) parameters for graphene on hBN, as well as for hBN encapsulated graphene. Our calculations show that the parameters depend on the specific stacking configuration of graphene on hBN. We also perform an interlayer distance study for the different graphene/hBN stacks to find the corresponding lowest energy distances. For very large interlayer distances, one can recover the pristine graphene properties, as we find from the dependence of the parameters on the interlayer distance. Furthermore, we find that orbital and SOC parameters, especially the Rashba one, depend strongly on an applied transverse electric field, giving a rich playground for spin physics. Armed with the model parameters, we employ the Dyakonov-Perel formalism to calculate the spin relaxation in graphene/hBN heterostructures. We find spin lifetimes in the nanosecond range, in agreement with recent measurements. The spin relaxation anisotropy, being the ratio of out-of-plane to in-plane spin lifetimes, is found to be giant close to the charge neutrality point, decreasing with increasing doping, and being highly tunable by an external transverse electric field. This is in contrast to bilayer graphene in which an external field saturates the spin relaxation anisotropy.
Magnetic proximity in a van der Waals heterostructure of magnetic insulator and graphene
Creators: name: Karpiak, Bogdan
name: Cummings, Aron W.
name: Zollner, Klaus
name: Vila, Marc
name: Khokhriakov, Dmitrii
name: Hoque, Anamul Md
name: Dankert, Andre
name: Svedlindh, Peter
name: Fabian, Jaroslav
name: Roche, Stephan
name: Dash, Saroj P.
Publisher: name: Universität Regensburg
Year: 2019
Subjects: subject: 530 Physik

description: Engineering 2D material heterostructures by combining the best of different materials in one ultimate unit can offer a plethora of opportunities in condensed matter physics. Here, in the van der Waals heterostructures of the ferromagnetic insulator Cr2Ge2Te6 and graphene, our observations indicate an out-of-plane proximity-induced ferromagnetic exchange interaction in graphene. The perpendicular magnetic anisotropy of Cr2Ge2Te6 results in significant modification of the spin transport and precession in graphene, which can be ascribed to the proximity-induced exchange interaction. Furthermore, the observation of a larger lifetime for perpendicular spins in comparison to the in-plane counterpart suggests the creation of a proximity-induced anisotropic spin texture in graphene. Our experimental results and density functional theory calculations open up opportunities for the realization of proximity-induced magnetic interactions and spin filters in 2D material heterostructures and can form the basic building blocks for future spintronic and topological quantum devices.
The Large-Volume Limit of a Quantum Tetrahedron is a Quantum Harmonic Oscillator
Creators: name: Schliemann, John
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is shown that the volume operator of a quantum tetrahedron is, in the sector of large eigenvalues, accurately described by a quantum harmonic oscillator. This result relies on the fact that (i) the volume operator couples only neighboring states of its standard basis, and (ii) its matrix elements show a unique maximum as a function of internal angular momentum quantum numbers. These quantum numbers, considered as a continuous variable, are the coordinate of the oscillator describing its quadratic potential, while the corresponding derivative defines a momentum operator. We also analyze the scaling properties of the oscillator parameters as a function of the size of the tetrahedron, and the role of different angular momentum coupling schemes.
description: 11 pages, 3 figures; a few remarks (and pertaining references) added, version to appear in Class. Quant. Grav
Uromys salamonis
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Uromys
Uromys salamonis

description: Uromys salamonis (Ramsay, 1883). Proc. Linn. Soc. N.S.W., 7:43. TYPE LOCALITY: Solomon Isis., Florida Isl. DISTRIBUTION: Florida Isl. (Solomon Isis.). COMMENT: Type locality of “Ugi Island,” in error; see Laurie and Hill, 1954:130. ISIS NUMBER: 5301410011066006001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 5), pp. 504-560 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 558, DOI: 10.5281/zenodo.7353037
description: {"references": ["Laurie, E. M. O., and J. E. Hill. 1954. List of land mammals of New Guinea, Celebes and adjacent islands 1758 - 1952. British Museum (Natural History) Publications, London, 175 pp."]}