cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Overstable rotating convection in presence of vertical magnetic field
Creators: name: Banerjee, Ankan
name: Ghosh, Manojit
name: Sharma, Lekha
name: Pal, Pinaki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We present the results of our investigation on nonlinear overstable rotating magnetoconvection (RMC) in presence of vertical external magnetic field. We focus on the dynamics appearing near the onset of convection by varying the system control parameters, namely, the Taylor number ($\mathrm{Ta}$), the Chandrasekhar number ($\mathrm{Q}$) and the Prandtl number ($\mathrm{Pr}$) in the ranges $750\leq\mathrm{Ta}\leq10^6$, $0 < \mathrm{Q} \leq 10^3$ and $0 < \mathrm{Pr} \leq 0.5$. Three dimensional (3D) direct numerical simulations (DNS) of the governing equations and low-dimensional modeling of the system are performed for this purpose. Extensive DNS in the specified parameter space shows two qualitatively different onsets depending on $\mathrm{Ta}$, $\mathrm{Q}$ and $\mathrm{Pr}$. In the first one, bistability appears at the onset, where both subcritical and supercritical convection coexist, while only supercritical convection is observed in the second one. Analysis of the low-dimensional model reveals that a supercritical Hopf bifurcation is responsible for the supercritical onset and a subcritical pitchfork bifurcation is responsible for the subcritical onset. It is also observed that appearance of subcritical convection at the onset has strong dependence on all three control parameters $\mathrm{Ta}$, $\mathrm{Q}$ and $\mathrm{Pr}$. The scenario of subcritical convection is found to disappear as $\mathrm{Pr}$ is increased for fixed $\mathrm{Ta}$ and $\mathrm{Q}$. However, most striking findings of the investigation is that the increment in $\mathrm{Ta}$ for fixed $\mathrm{Q}$ and $\mathrm{Pr}$ opposes the subcritical convection, whereas the increment in $\mathrm{Q}$ for fixed $\mathrm{Ta}$ and $\mathrm{Pr}$ favors it. This is in sharp contrast with the earlier results reported in RMC.
description: Submitted to Journal of Fluid Mechanics
Anisotropic dielectric functions, band-to-band transitions, and critical points in α-Ga2O3
Creators: name: Hilfiker, Matthew
name: Korlacki, Rafał
name: Jinno, Riena
name: Cho, Yongjin
name: Xing, Huili Grace
name: Jena, Debdeep
name: Kilic, Ufuk
name: Stokey, Megan
name: Schubert, Mathias
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We use a combined generalized spectroscopic ellipsometry and density functional theory approach to determine and analyze the anisotropic dielectric functions of an $α$-Ga$_2$O$_3$ thin film. The sample is grown epitaxially by plasma-assisted molecular beam epitaxy on $m$-plane sapphire. Generalized spectroscopic ellipsometry data from multiple sample azimuths in the spectral range from 0.73 eV to 8.75 eV are simultaneously analyzed. Density functional theory is used to calculate the valence and conduction band structure. We identify, for the indirect-bandgap material, two direct band-to-band transitions with $M_0$-type van Hove singularities for polarization perpendicular to the $c$ axis, $E_{0,\perp}=5.46(6)$ eV and $E_{0,\perp}=6.04(1)$ eV, and one direct band-to-band transition with $M_1$-type van Hove singularity for polarization parallel with $E_{0,||}=5.44(2)$ eV. We further identify excitonic contributions with small binding energy of 7 meV associated with the lowest ordinary transition, and a hyperbolic exciton at the $M_1$-type critical point with large binding energy of 178 meV.
description: 7 pages, 4 figures, in submission to Applied Physics Letters
Fractional Brane State in the Early Universe
Creators: name: Chowdhury, Borun D.
name: Mathur, Samir D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In the early Universe matter was crushed to high densities, in a manner similar to that encountered in gravitational collapse to black holes. String theory suggests that the large entropy of black holes can be understood in terms of fractional branes and antibranes. We assume a similar physics for the matter in the early Universe, taking a toroidal compactification and letting branes wrap around the cycles of the torus. We find an equation of state p_i=w_i rho, for which the dynamics can be solved analytically. For black holes, fractionation can lead to non-local quantum gravity effects across length scales of order the horizon radius; similar effects in the early Universe might change our understanding of Cosmology in basic ways.
description: 40 pages, 18 figures, references added
Generalized hydrodynamics in strongly interacting 1D Bose gases
Creators: name: Malvania, Neel
name: Zhang, Yicheng
name: Le, Yuan
name: Dubail, Jerome
name: Rigol, Marcos
name: Weiss, David S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The dynamics of strongly interacting many-body quantum systems are notoriously complex and difficult to simulate. A new theory, generalized hydrodynamics (GHD), promises to efficiently accomplish such simulations for nearly-integrable systems. It predicts the evolution of the distribution of rapidities, which are the momenta of the quasiparticles in integrable systems. GHD was recently tested experimentally for weakly interacting atoms, but its applicability to strongly interacting systems has not been experimentally established. Here we test GHD with bundles of one-dimensional (1D) Bose gases by performing large trap quenches in both the strong and intermediate coupling regimes. We measure the evolving distribution of rapidities, and find that theory and experiment agree well over dozens of trap oscillations, for average dimensionless coupling strengths that range from 0.3 to 9.3. By also measuring momentum distributions, we gain experimental access to the interaction energy and thus to how the quasiparticles themselves evolve. The accuracy of GHD demonstrated here confirms its wide applicability to the simulation of nearly-integrable quantum dynamical systems. Future experimental studies are needed to explore GHD in spin chains, as well as the crossover between GHD and regular hydrodynamics in the presence of stronger integrability breaking perturbations.
description: 21 pages, 4 main text figures, 10 extended data figures
A Phase Transition in U(1) Configuration Space: Oscillons as Remnants of Vortex-Antivortex Annihilation
Creators: name: Gleiser, Marcelo
name: Thorarinson, Joel
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We show that the low-momentum scattering of vortex-antivortex pairs can lead to very long-lived oscillon states in 2d Abelian Higgs models. The emergence of oscillons is controlled by the ratio of scalar and vector field masses, $β=(m_s/m_v)^2$ and can be described as a phase transition in field configuration space with critical value $β_c\simeq 0.13(6)\pm 2 $: only models with $β
description: 4 pages, 5 figures, LaTeX
Counting $2\times2$ integer matrices with fixed trace and determinant
Creators: name: Guria, Rachita
Publisher: name: arXiv
Year: 2024
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We count with a smooth weight the number of $2 \times 2$ integer matrices with a fixed characteristic polynomial with a main term and an error term using bounds for sums of Weyl sums for quadratic roots.
description: 6 pages
Beyond picturing
Creators: name: Adsett, Peter
Publisher: name: The Australian National University
Year: 2012
Subjects: subject: Painting, Abstract Australia
subject: Art, Modern 20th Century
subject: Art Cross-cultural studies
subject: Perspective
subject: Visual perception

description: Beyond Picturing is practice led research aimed at determining whether horizontality can be deemed a medium in its own right, and further, whether it can establish a new set of conventions, enabling a cross-cultural dialogue between peoples of our region, particularly Aboriginal people and Maori and those of European heritage. I chart the course of horizontality across the art of the 20th century, identifying it as a medium for practice. My thesis examines examples in which horizontality as a methodology was a vehicle for meaning, based on the theories of structural linguistics and phenomenology. Furthermore, by acknowledging the axial shift, from the horizontal plane of process to the vertical plane of image, I discover a shared ground for cultural dialogue with painters of the central desert and the Kimberley.
Identification and characterization of the Arabidopsis thaliana PT11 multigene family
Creators: name: David, Rakesh
Publisher: name: The Australian National University
Year: 2018
Subjects: subject: QK495.C9 D38 2011
subject: Arabidopsis thaliana Genetics
subject: Protein kinases
subject: Plant gene expression

description: Plants possess a complex network of signalling pathways to integrate environmental and developmental cues. Kinases play a central role in this process by linking inter and intracellular signals to downstream adaptive responses. Pto-Interacting 1-like (PT11) kinases represent a specific class of serine/threonine protein kinases involved in biotic stress signalling, that are also emerging as players in abiotic stress response or plant development. Little is known, however, about their precise functions. This study describes the identification and characterization of PT11-like genes in Arabidopsis thaliana. A specific signature motif identified from previously characterised PT11 kinases is used as a bait to retrieve 8 putative PT11 sequences in Arabidopsis. Phylogenetic analysis reveals that these PT11 isoforms group into 4 pairs of paralogs that likely arose from a relatively recent duplication event. These genes are shown to vary in their expression patterns, during plant development and in response to both biotic and abiotic stresses, suggesting expression divergence as a possible driving force for the expansion of the family in Arabidopsis. Using indexed T-DNA insertion mutants and silencing lines, non-redundant biological functions are demonstrated for two PT11-like genes. Silencing of PT11-8 promotes root elongation in young seedlings, through an increase in root meristem size, which identifies that isoform as a negative regulator of root development and cell production rates. Another PT11 isoform, PT11-5, is shown to suppress plant basal resistance to the bacterial pathogen Pseudomonas syringae pathovar tomato (Pst) DC3000. PTII-5 loss-of-function leads to impaired growth of virulent Pst DC3000 pathogen in planta, as verified by two independent bacterial quantification methods. The oxidative signal-inducible 1 (OXI1/AGC2-1), known as an upstream component of ROS-dependent responses, is identified as a direct protein interacting partner of PTI1-5. OXI1 is known to interact with 4 other PTI1-like kinases and circumstantial evidence from this thesis suggests its likely involvement with a sixth isoform, PTI1-8, in regulating root elongation. Based on these experimental data, a general model for PTI1 signalling is proposed in which individual isoforms have evolved to transduce diverse upstream endogenous or exogenous cues through the OXI1-mediated ROS signalling pathway.
Gravitation, electromagnetism and cosmological constant in purely affine gravity
Creators: name: Poplawski, Nikodem J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The Ferraris-Kijowski purely affine Lagrangian for the electromagnetic field, that has the form of the Maxwell Lagrangian with the metric tensor replaced by the symmetrized Ricci tensor, is dynamically equivalent to the metric Einstein-Maxwell Lagrangian, except the zero-field limit, for which the metric tensor is not well-defined. This feature indicates that, for the Ferraris-Kijowski model to be physical, there must exist a background field that depends on the Ricci tensor. The simplest possibility, supported by recent astronomical observations, is the cosmological constant, generated in the purely affine formulation of gravity by the Eddington Lagrangian. In this paper we combine the electromagnetic field and the cosmological constant in the purely affine formulation. We show that the sum of the two affine (Eddington and Ferraris-Kijowski) Lagrangians is dynamically inequivalent to the sum of the analogous ($Λ$CDM and Einstein-Maxwell) Lagrangians in the metric-affine/metric formulation. We also show that such a construction is valid, like the affine Einstein-Born-Infeld formulation, only for weak electromagnetic fields, on the order of the magnetic field in outer space of the Solar System. Therefore the purely affine formulation that combines gravity, electromagnetism and cosmological constant cannot be a simple sum of affine terms corresponding separately to these fields. A quite complicated form of the affine equivalent of the metric Einstein-Maxwell-$Λ$ Lagrangian suggests that Nature can be described by a simpler affine Lagrangian, leading to modifications of the Einstein-Maxwell-$Λ$CDM theory for electromagnetic fields that contribute to the spacetime curvature on the same order as the cosmological constant.
description: 17 pages, extended and combined with gr-qc/0612193; published version
Determiner systems and quantificational strategies: evidence from Salish
Creators: name: Matthewson, Lisa
Publisher: name: University of British Columbia
Year: 2009

description: This dissertation has three main goals: 1. To provide an analysis of the syntax and semantics of Salish determiners and quantifiers. 2. To provide an account of differences in the determiner and quantification systems of Salish and English which reduces cross-linguistic variation to a minimum, in line with a restrictive theory of Universal Grammar. 3. To assess the theoretical consequences of the analysis of Salish, including implications for the range of possible cross-linguistic variation in determiner and quantification systems, and the nature of the relationship between syntactic structure and interpretation. I give evidence that one common method of expressing quantificational notions in English is absent in Salish. While English readily allows quantifiers to occupy the syntactic position of the determiner (as in every woman, most women), Salish languages do not allow such constructions (see also Jelinek 1995). I propose that Salish and English exemplify opposite settings of a Common Ground Parameter, which states that Salish determiners may not access the common ground of the discourse. This parameter accounts not only for the absence of quantificational determiners in Salish (since quantifiers presuppose existence, and therefore access the common ground), it also derives several other differences between Salish and English determiners, such as the absence of a definiteness distinction in Salish. I further demonstrate that Salish possesses a robust system of DP-internal quantification, and that quantificational DPs in Salish function as generalized quantifiers at logical form. This means that the strong hypothesis that languages do not differ with respect to the presence or absence of generalized quantifiers is upheld (cf. Barwise and Cooper 1981). Simple DPs in Salish, unlike in English, do not function as generalized quantifiers. This result follows from the Common Ground Parameter. I give further evidence from St'at'imcets (Lillooet Salish) on the strong/weak quantifier distinction; I argue that the interpretation of weak quantifiers is derivable directly from the overt syntactic position of the quantifier.
Observation of solar coronal heating powered by magneto-acoustic oscillations in a moss region
Creators: name: Hashim, Parida
name: Hong, Zhenxiang
name: Ji, Haisheng
name: Shen, Jinhua
name: Ji, Kaifan
name: Cao, Wenda
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In this paper, we report the observed temporal correlation between extreme-violet (EUV) emission and magneto-acoustic oscillations in a EUV moss region, which is the footpoint region only connected by magnetic loops with million-degree plasma. The result is obtained from a detailed multi-wavelength data analysis to the region with the purpose of resolving fine-scale mass and energy flows that come from the photosphere, pass through the chromosphere and finally heat solar transition region or the corona. The data set covers three atmospheric levels on the Sun, consisting of high-resolution broad-band imaging at TiO 7057 Å and the line of sight magnetograms for the photosphere, high-resolution narrow-band images at Helium \textsc{i} 10830 Å for the chromosphere and EUV images at 171 Å for the corona. We report following new phenomena: 1) Repeated injections of chromospheric material shown as 10830 Å absorption are squirted out from inter-granular lanes with the period of $\sim$ 5 minutes. 2) EUV emissions are found to be periodically modulated with the similar periods of $\sim$ 5 minutes. 3) Around the injection area where 10830 Å absorption is enhanced, both EUV emissions and the strength of magnetic field are remarkably stronger. 4) The peaks on the time profile of the EUV emissions are found to be in sync with oscillatory peaks of the stronger magnetic field in the region. These findings may give a series of strong evidences supporting the scenario that coronal heating is powered by magneto-acoustic waves.
description: 8 pages, 4 figures
Diplomatic style as foreign policy insight : a case study of South Korea
Creators: name: Robertson, Jeffrey
Publisher: name: The Australian National University
Year: 2014
Subjects: subject: JZ1747 .R63 2014
subject: Korea (South) Foreign relations administration.
subject: Korea (South) Foreign relations

description: Diplomatic style is problematic. In academic research it is dismissed, misconstrued, treated perfunctorily, or wholly absented. Despite substantial expansion in the field of diplomatic studies, it has attracted scant attention. Yet, practitioners maintain a faith-like confidence in it. They allude to its importance in memoirs and instructional texts, and assume it gives them an advantage over scholars in analyzing foreign policy. For scholars and analysts, this raises the question, does diplomatic style really provide additional insight into foreign policy? This study assesses whether the ability to recognize and comprehend diplomatic style provides additional analytical insight above and beyond that which is available through academic research. I first explore the concept of diplomatic style and present a framework for its analysis. I construct four Weberian ideal types of diplomatic style - purposive-rational, value-rational, traditional, and emotional, which provide a means to contrast and compare concrete examples. Using South Korea as a case study, I elicit experiential narratives of diplomatic style from practicing and retired South Korean diplomats, and practicing and retired members of the Seoul foreign diplomatic corps. I then analyze, contrast, and compare these narratives with the Weberian ideal types. I find a tendency towards emotionalism, and concerns regarding status, generational change, cosmopolitanism, and estrangement, to be characteristics of the South Korean diplomatic style. While these phenomena are featured in academic research, I argue that focusing on diplomatic style highlights their relevance to foreign policy. In particular, the relevance of estrangement is difficult to ascertain from academic research alone. Therefore I also argue that the ability to recognize and comprehend diplomatic style does not provide additional analytical insight into a state's foreign policy, above and beyond that which is normally available through scholarly research, but rather narrows the vast range of information analysts must cover, and thus is an important guide to the factors which are 'policy relevant'. Hence the study makes three core contributions. First, it contributes to the field of diplomatic studies by presenting a comprehensive framework for the conceptualization of style in diplomatic practice. Second, it contributes to the field of Korean studies by highlighting influences on South Korean foreign policy, which were previously disparate and difficult to isolate. And finally, it presents a tangible policy solution to address the scholar-practitioner gap through a focus on diplomatic style.
Understanding the relations between QSOs and their host galaxies from combined HST imaging and VLT spectroscopy
Creators: name: Letawe, Y.
name: Magain, P.
name: Letawe, G.
name: Courbin, F.
name: Hutsemékers, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The host galaxies of six nearby QSOs are studied on the basis of high resolution HST optical images and spatially resolved VLT slit spectra. The gas ionization and velocity are mapped as a function of the distance to the central QSO. In the majority of the cases, the QSO significantly contributes to the gas ionization in its whole host galaxy, and sometimes even outside. Reflection or scattering of the QSO \ha line from remote regions of the galaxy is detected in several instances. The line shifts show that, in all cases, the matter responsible for the light reflection moves away from the QSO, likely accelerated by its radiation pressure. The two faintest QSOs reside in spirals, with some signs of a past gravitational perturbation. One of the intermediate luminosity QSOs resides in a massive elliptical containing gas ionized (and probably pushed away) by the QSO radiation. The other medium-power object is found in a spiral galaxy displaying complex velocity structure, with the central QSO moving with respect to the bulge, probably as a result of a galactic collision. The two most powerful objects are involved in violent gravitational interactions and one of them has no detected host. These results suggest that (1) large-scale phenomena, such as galactic collisions, are closely related to the triggering and the feeding of the QSO and (2) once ignited, the QSO has significant influence on its large-scale neighborhood (often the whole host and sometimes further away).
description: Accepted for publication in ApJ. 31 pages, 17 figures, 3 tables
Breathy vs. clear wordlist and vowels (23 F)
Creators: name: Thawichart, Samrij
name: Thawichart, Thidarat
name: Lau-Preechathammarach, Raksit Tyler
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: kdt

description: Elicitation of breathy/clear minimal pairs interspersed with other words targeting various vowels. SrThc and other voice in background. Recorder: Zoom H4n. Microphone: C544-L Headset Microphone.
Comment about constraints on nanometer-range modifications to gravity from low-energy neutron experiments
Creators: name: Zimmer, O.
name: Kaiser, N.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A topic of present interest is the application of experimentally observed quantum mechanical levels of ultra-cold neutrons in the earth's gravitational field for searching short-range modifications to gravity. A constraint on new forces in the nanometer-range published by Nesvizhevsky and Protasov follows from inadequate modelling of the interaction potential of a neutron with a mirror wall. Limits by many orders of magnitude better were already derived long ago from the consistency of experiments on the neutron-electron interaction.
description: three pages
Extremize Optical Chiralities through Polarization Singularities
Creators: name: Chen, Weijin
name: Yang, Qingdong
name: Chen, Yuntian
name: Liu, Wei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Chiral optical effects are generally quantified along some specific incident directions of exciting waves (especially for extrinsic chiralities of achiral structures) or defined as direction-independent properties by averaging the responses among all structure orientations. Though of great significance for various applications, chirality extremization (maximized or minimized) with respect to incident directions or structure orientations have not been explored, especially in a systematic manner. In this study we examine the chiral responses of open photonic structures from perspectives of quasi-normal modes and polarization singularities of their far-field radiations. The nontrivial topology of the momentum sphere secures the existence of singularity directions along which mode radiations are either circularly or linearly polarized. When plane waves are incident along those directions, the reciprocity ensures ideal maximization and minimization of optical chiralities, for corresponding mode radiations of circular and linear polarizations respectively. For directions of general elliptical polarizations, we have unveiled the subtle equality of a Stokes parameter and the circular dichroism, showing that an intrinsically chiral structure can unexpectedly exhibit no chirality at all or even chiralities of opposite handedness for different incident directions. The framework we establish can be applied to not only finite scattering bodies but also infinite periodic structures, encompassing both intrinsic and extrinsic optical chiralities. We have effectively merged two vibrant disciplines of chiral and singular optics, which can potentially trigger more optical chirality-singularity related interdisciplinary studies.
description: Several mislabellings in v1 are corrected, with Supplemental Material also included
MPEC 2024-A31 : 2021 RD239
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2021 RD239

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.
Cosmic Neutrinos from the Sources of Galactic and Extragalactic Cosmic Rays
Creators: name: Halzen, Francis
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Although kilometer-scale neutrino detectors such as IceCube are discovery instruments, their conceptual design is very much anchored to the observational fact that Nature produces protons and photons with energies in excess of 10^20 eV and 10^13 eV, respectively. The puzzle of where and how Nature accelerates the highest energy cosmic particles is unresolved almost a century after their discovery. From energetics considerations we anticipate order 10~100 neutrino events per kilometer squared per year pointing back at the source(s) of both galactic and extragalactic cosmic rays. In this context, we discuss the results of the AMANDA and IceCube neutrino telescopes which will deliver a kilometer-square-year of data over the next 3 years.
description: 8 pages, 4 figures
Single-Transverse Spin Asymmetry in Dijet Correlations at Hadron Colliders
Creators: name: Bomhof, C. J.
name: Mulders, P. J.
name: Vogelsang, W.
name: Yuan, F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a phenomenological study of the single-transverse spin asymmetry in azimuthal correlations of two jets produced nearly "back-to-back" in pp collisions at RHIC. We properly take into account the initial- and final-state interactions of partons that can generate this asymmetry in QCD hard-scattering. Using distribution functions fitted to the existing single-spin data, we make predictions for various weighted single-spin asymmetries in dijet correlations that are now readily testable at RHIC.
description: 14 pages, 2 figures
Multi-omics data integration and patient survival analysis – a new approach towards treatment personalization based on leukemia case study
Creators: name: Gruca, Aleksandra
name: Łukasz Wróbel
name: Henzel, Joanna
name: Sikora, Marek
Publisher: name: F1000 Research Limited
Year: 2019

description: Introduction
Multi-omics repositories allow researches to extract data for comparison, integration and analysis in order to discover the molecular bases of diseases and development of new effective treatments. However, the diversity of biological systems, the technological limits, the large number of biological variables and the relatively low number of biological samples make the integration and analysis of multi-omics datasets a challenging and difficult task.

PersonALL Project
PersonALL project is a collaborative project among the Polish Pediatric Leukemia/Lymphoma Study Group (PPLLSG) centers that focuses on research on molecular diagnostics of ALL aiming into improved diagnostics, classification and, finally, treatment personalization of ALL. With this project the system and database for clinical and molecular patient data storage and analysis is developed.

Methods
Here we present the analytical part and a data workflow of the expert system that is developed within the PersonALL project. In specific, we focus here on feature selection and integration thet can be applied for any type of the following omics experimental data: RNA-Seq gene expression, methylation or CNV. For each type of the omics data different approach is designed taking into account specific characteristics of a particular data type. In the final step all selected features (genes) are combined into one data table and functional analysis is performed. The proof of concept example is presented by providing the results of analysis the data of 109 leukemia patients from TCGA database.

Results and Conclusion By applying feature selection methods we reduced initial dataset from 565,426 molecular features to 1,203 genes describing 109 patients.
 Functional analysis shows that most of GO terms are related to cell adhesion, extracellular matrix and organismal development.
 It is known from the literature that cell adhesion to other cells and extracellular matrix pattern is disturbed in leukemia patients.
 The presented approach is a part the expert system developed within the PersonALL project, which is a collaborative project among the Polish Pediatric Leukemia/Lymphoma Study Group centers.
On computing fixpoints in well-structured regular model checking, with applications to lossy channel systems
Creators: name: Baier, C.
name: Bertrand, N.
name: Schnoebelen, Ph.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Symbolic Computation (cs.SC)
subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: We prove a general finite convergence theorem for "upward-guarded" fixpoint expressions over a well-quasi-ordered set. This has immediate applications in regular model checking of well-structured systems, where a main issue is the eventual convergence of fixpoint computations. In particular, we are able to directly obtain several new decidability results on lossy channel systems.
description: 16 pages
MPEC 2024-A32 : 2022 OY78
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2022 OY78

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.
Diffraction-limited 3 um Spectroscopy of IRAS 04296+3429 and IRAS 05341+0852: Spatial Extent of Hydrocarbon Dust Emission and Dust Evolutionary Sequence
Creators: name: Goto, M.
name: Kwok, Sun
name: Takami, H.
name: Hayashi, M.
name: Gaessler, W.
name: Hayano, Y.
name: Iye, M.
name: Kamata, Y.
name: Kanzawa, T.
name: Kobayashi, N.
name: Minowa, Y.
name: Nedachi, K.
name: Oya, S.
name: Pyo, T. -S.
name: Saint-Jacques, D.
name: Takato, N.
name: Terada, H.
name: Henning, Th.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present 3 um spectroscopy of the carbon-rich proto-planetary nebulae IRAS 04296+3429 and IRAS 05341+0852 conducted with the adaptive optics system at the Subaru Telescope. We utilize the nearly diffraction-limited spectroscopy to probe the spatial extent of the hydrocarbon dust emitting zone. We find a hydrocarbon emission core extending up to 100--160 mas from the center of IRAS 04296+3429, corresponding to a physical diameter of 400--640 AU, assuming a distance of 4 kpc. On the other hand, we find that IRAS 05341+0852 is not spatially resolved with this instrumentation. The physical extent of these proto-planetary nebulae, along with the reanalyzed data of IRAS 22272+5435 published previously, suggests a correlation between the physical extent of the hydrocarbon dust emission and the spectral evolution of the aliphatic to aromatic features in these post-AGB stars. These measurements represent the first direct test of the proposed chemical synthesis route of carbonaceous dust in the circumstellar environment of evolved stars.
description: 6 pages, 4 figures, Accepted for publication in the Astrophysical Journal
The Importance of Mergers for the Origin of Intracluster Stars in Cosmological Simulations of Galaxy Clusters
Creators: name: Murante, G.
name: Giovalli, M.
name: Gerhard, O.
name: Arnaboldi, M.
name: Borgani, S.
name: Dolag, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the origin of the diffuse stellar component (DSC) in 117 galaxy clusters extracted from a cosmological hydrodynamical simulation. We identify all galaxies present in the simulated clusters at 17 output redshifts, and then build the family trees for all the z=0 cluster galaxies. Then for each diffuse star particle identified at z=0, we look for the galaxy to which it once belonged at an earlier redshift, thus linking the presence of the diffuse stellar component to the galaxy formation history. The main results of our analysis are: (i) On average, half of the DSC star particles comes from galaxies associated with the family tree of the most massive galaxy (BCG), one quarter comes from the family trees of other massive galaxies, and the remaining quarter from dissolved galaxies. I.e., the formation of the DSC is parallel to the build-up of the BCG and other massive galaxies. (ii) Most DSC star particles become unbound during mergers in the formation history of the BGCs and of other massive galaxies, independent of cluster mass. Our results suggest that the tidal stripping mechanism is responsible only for a minor fraction of the DSC. (iii) At cluster radii larger than 250 kpc/h, the DSC fraction from the BCG is reduced and the largest contribution comes from the other massive galaxies; in the cluster outskirts, galaxies of all masses contribute to the DSC. (iv) The DSC does not have a preferred redshift of formation: however, most DSC stars are unbound at z<1. (v) The amount of DSC stars at z=0 does not corre late strongly with the global dynamical history of clusters, and increases weakly with cluster mass. [abridged]
description: 17 pages, 14 figures (3 in low resolution), MNRAS in press
Constraining Liberated Supergravity
Creators: name: Jang, Hun
name: Porrati, Massimo
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Fermionic terms in a class of locally supersymmetric theories called "liberated supergravity" are nonrenormalizable interactions proportional to inverse powers of the supersymmetry breaking scale and Planck mass. This property defines an intrinsic cutoff for liberated supergravities, which are therefore effective theories valid only below energies that never exceed the cutoff. Requiring that the cutoff exceeds current theoretical and observational bounds shows that the new scalar potential terms allowed by liberated supergravity can neither change the cosmological constant predicted by supergravity by any observable amount, nor give measurable contributions to particle masses. We show that it is nevertheless possible to define a simple liberated supergravity model of slow roll inflation valid up to energy scales that are well above the Hubble parameter during inflation and exceeds observable limits after inflation. The key to constructing a viable model is to change the supersymmetry breaking scale, from a Planck-scale value during inflation, to TeV-scale after inflation.
description: 15 pages
Villager Responses to Drought:An Ethnographic Study in Southwest China
Creators: name: Shang, Aisi
Publisher: name: Canberra, ACT : The Australian National University
Year: 2018
Subjects: disaster anthropology
drought
vulnerability approach
multi-layered framework

description: This thesis explores the social underpinnings of disasters associated with natural hazards. In existing disaster studies, it is common to classify people into different vulnerable groups and examine the vulnerabilities that limit them. Rather than take this approach, which I argue reinforces stereotyped images of vulnerable people as weak and passive, this thesis examines people’s experiences of and responses to a drought in Yunnan Province, southwest China. Building on existing literature, my ethnographic fieldwork and a broad understanding of Chinese society, I have analysed and explained different forms of social institutions, power relations and sets of practices based on China’s rural-urban divide, intra-rural inequality, ethnicity, gender, and social age and life course, and have examined how these forms of inequality and difference shaped communities’, households’, and individuals’ experiences of and responses to drought. I argue that villagers exercise agency, and actively manage the challenges of drought in their daily life. However, their choices are made within the confines of institutional constraints. Different social institutions and relations interact with each other to shape variations in people’s experiences of and responses to drought. At the community level, the existence of village infrastructure and the help of external agencies are key. Obtaining funds for infrastructure construction and drought relief largely depends on personal connections between the village communities and external agencies. At the household level, patterns of social inequalities, in particular the inequalities between ordinary households and those of village cadres, combines with the life course of households to shape experiences of and responses to drought. Within the household, gender intersects with individuals’ life courses to shape people’s experiences of drought and their responses to it.
Star Formation in AEGIS Field Galaxies since z=1.1 : The Dominance of Gradually Declining Star Formation, and the Main Sequence of Star-Forming Galaxies
Creators: name: Noeske, K. G.
name: Weiner, B. J.
name: Faber, S. M.
name: Papovich, C.
name: Koo, D. C.
name: Somerville, R. S.
name: Bundy, K.
name: Conselice, C. J.
name: Newman, J. A.
name: Schiminovich, D.
name: Floc'h, E. Le
name: Coil, A. L.
name: Rieke, G. H.
name: Lotz, J. M.
name: Primack, J. R.
name: Barmby, P.
name: Cooper, M. C.
name: Davis, M.
name: Ellis, R. S.
name: Fazio, G. G.
name: Guhathakurta, P.
name: Huang, J.
name: Kassin, S. A.
name: Martin, D. C.
name: Phillips, A. C.
name: Rich, R. M.
name: Small, T. A.
name: Willmer, C. N. A.
name: Wilson, G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyze star formation (SF) as a function of stellar mass (M*) and redshift z in the All Wavelength Extended Groth Strip International Survey (AEGIS). For 2905 field galaxies, complete to 10^10(10^10.8) Msun at z<0.7(1), with Keck spectroscopic redshifts out to z=1.1, we compile SF rates (SFR) from emission lines, GALEX, and Spitzer MIPS 24 micron photometry, optical-NIR M* measurements, and HST morphologies. Galaxies with reliable signs of SF form a distinct "main sequence (MS)", with a limited range of SFR at a given M* and z (1 sigma < +-0.3 dex), and log(SFR) approximately proportional to log(M*). The range of log(SFR) remains constant to z>1, while the MS as a whole moves to higher SFR as z increases. The range of SFR along the MS constrains the amplitude of episodic variations of SF, and the effect of mergers on SFR. Typical galaxies spend ~67(95)% of their lifetime since z=1 within a factor of
description: 5 pages, 1 figure, emulateapj; ApJ Letters, accepted; AEGIS special issue; proof-level corrections added; title changed
Estimation non-paramétrique de la densité spectrale d'un processus gaussien échantillonné aléatoirement
Creators: name: Bardet, Jean-Marc
name: Bertrand, Pierre
name: Billat, Véronique
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: From a wavelet analysis, one derives a nonparametrical estimator for the spectral density of a Gaussian process with stationary increments. First, the idealistic case of a continuous time path of the process is considered. A punctual Central Limit Theorem (CLT) and an estimation of the Mean Integrate Square Error (MISE) are established. Next, to fit the applications, one considers the case where one observes a path at random times. One built a second estimator obtained by replacing the wavelet coefficients by their discretizations. A second CLT and the corresponding estimation of the MISE are provided. Finally, simulation results and an application on the heartbeat time series of marathon runners are presented.
SDSS-IV MaNGA: The Nature of an Off-galaxy H$α$ Blob -- A Multi-wavelength View of Offset Cooling in a Merging Galaxy Group
Creators: name: Pan, Hsi-An
name: Lin, Lihwai
name: Hsieh, Bau-Ching
name: Michalowski, Michal J.
name: Bothwell, Matthew S.
name: Huang, Song
name: Moiseev, Alexei V.
name: Oparin, Dmitry
name: O'Sullivan, Ewan
name: Worrall, Diana M.
name: Sanchez, Sebastian F.
name: Gwyn, Stephen
name: Law, David R.
name: Stark, David V.
name: Bizyaev, Dmitry
name: Li, Cheng
name: Lee, Chien-Hsiu
name: Fu, Hai
name: Belfiore, Francesco
name: Bundy, Kevin
name: Fernandez-Trincado, Jose G.
name: Gelfand, Joseph
name: Peirani, Sebastien
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Galaxies in dense environments, such as groups and clusters, experience various processes by which galaxies gain and lose gas. Using data from the SDSS-IV MaNGA survey, we previously reported the discovery of a giant (6 -- 8 kpc in diameter) H$α$ blob, Totoro, about 8 kpc away from a pair of galaxies (Satsuki and Mei) residing in a galaxy group which is experiencing a group-group merger. Here, we combine interferometric $^{12}$CO(1--0) molecular gas data, new wide-field H$α$, $u$-band data, and published X-ray data to determine the origin of the blob. Several scenarios are discussed to account for its multi-wavelength properties, including (1) H$α$ gas being stripped from galaxy Satsuki by ram-pressure; (2) a separated low-surface-brightness galaxy; (3) gas being ejected or ionized by an active galactic nucleus (AGN); and (4) a cooling intra-group medium (IGM). Scenarios (1) and (2) are less favored by the present data. Scenario (3) is also less likely as there is no evidence for an active ongoing AGN in the host galaxy. We find that the CO (cold) and H$α$ (warm) gas coexist with X-ray (hot) structures; moreover, the derived cooling time is within the regime where molecular and H$α$ gas are expected. The coexistence of gas with different temperatures also agrees with that of cooling gas in other systems. Our multi-wavelength results strongly suggest that the CO and H$α$ gas are the product of cooling from the IGM at its current location, i.e., cooling has occurred, and may be ongoing, well outside the host-galaxy core.
description: 23 pages, 10 figures, Accepted for publication in ApJ
Dinner with host family
Creators: name: Thawichart, Rungphithak
name: Thawichart, Samrij
name: Lau-Preechathammarach, Raksit Tyler
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: kdt

description: Conversation over dinner with host family. Recorder: Zoom H4n. Microphone: internal.
Monochromatic triangles in two-colored plane
Creators: name: Jelinek, Vit
name: Kyncl, Jan
name: Stolar, Rudolf
name: Valla, Tomas
Publisher: name: arXiv
Year: 2007
Subjects: subject: Combinatorics (math.CO)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 05D10 (Primary) 52C10 (Secondary)

description: We prove that for any partition of the plane into a closed set $C$ and an open set $O$ and for any configuration $T$ of three points, there is a translated and rotated copy of $T$ contained in $C$ or in $O$. Apart from that, we consider partitions of the plane into two sets whose common boundary is a union of piecewise linear curves. We show that for any such partition and any configuration $T$ which is a vertex set of a non-equilateral triangle there is a copy of $T$ contained in the interior of one of the two partition classes. Furthermore, we give the characterization of these "polygonal" partitions that avoid copies of a given equilateral triple. These results support a conjecture of Erdos, Graham, Montgomery, Rothschild, Spencer and Straus, which states that every two-coloring of the plane contains a monochromatic copy of any nonequilateral triple of points; on the other hand, we disprove a stronger conjecture by the same authors, by providing non-trivial examples of two-colorings that avoid a given equilateral triple.
description: 20 pages, 9 figures
Probing the cosmological singularity with a particle
Creators: name: Malkiewicz, Przemyslaw
name: Piechocki, Wlodzimierz
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We examine the transition of a particle across the singularity of the compactified Milne (CM) space. Quantization of the phase space of a particle and testing the quantum stability of its dynamics are consistent to one another. One type of transition of a quantum particle is described by a quantum state that is continuous at the singularity. It indicates the existence of a deterministic link between the propagation of a particle before and after crossing the singularity. Regularization of the CM space leads to the dynamics similar to the dynamics in the de Sitter space. The CM space is a promising model to describe the cosmological singularity deserving further investigation by making use of strings and membranes.
description: 19 pages, 7 figures, revtex4, added references, version accepted for publication in Class. Quantum Grav