cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The unsolidity of the ground
Creators: name: Lovegrove, Susan Faye
Publisher: name: Canberra, ACT : The Australian National University
Year: 2002

description: The presentation of the thesis comprises the Studio Practice component ( 66%) which takes the form of an exhibition of paintings and works on paper held at Helen Maxwell Gallery from the 22 March to the 14 April 2002 and at the Canberra School of Art Gallery from the 21 March to 28 March 2002, together with the Report which documents the nature and development of the research undertaken during the course of the study, plus the Dissertation component (33% ). The Studio Practice component has been based in the Painting Workshop and has examined the topic of the representation of the land. The Dissertation undertakes an analysis of the painting Big Yam Dreaming 1995 by Emily Kngwarray through a series of cross-cultural interpretations.
Body politics: otherness and the representation of bodies in late medieval writings
Creators: name: Blum Fuller, Martín F.
Publisher: name: University of British Columbia
Year: 2009

description: This thesis examines the use and function of the human body as a surface that is inscribed with a number of socially significant meanings and how these inscriptions operate in the specific late medieval cultural production. Drawing on Jauss's notion of the social and political significance of medieval narrative, I seek to determine how specific texts contribute to a regulatory practice by thematizing bodies that are perceived as "other," that resist or defy an imagined social norm or stereotype. Each of the dissertation's four chapters treats a different set of notions about the human body. The first one examines Chaucer's Man of Law's Tale and The King of Tars as representations of ethnographic difference. I argue that the late Middle Ages did not have the notion of "race" as a signifier of ethnic difference: instead there is a highly unstable system of positions that place an individual in relation to Christian Salvation History. Robert Henryson's Testament of Cresseid is at the centre of chapter two that examines the moral issues surrounding leprosy as a stigmatized disease. Reading the text as a piece of medical historiography, I argue that one of the purposes of the narrative is to establish the link between Cresseid's sexual behaviour and her disease. A discussion of the homosocial underpinnings of late medieval feudal society, particularly in light of Duby's notion of "les jeunes," forms the basis of the final two chapters. Chapter three discusses Chaucer's Legend ofLucrece and the narrative function of rape as a pedagogical instrument with the aim to ensure the availability of untouched female bodies for a "traffic in women" between noblemen. Chapter four examines transgressive sexual acts as the objects of jokes in fabliaux, such as Chaucer's Miller's Tale. By using shame and ridicule as their main strategy, these texts, I argue, fulfil an exemplary function and act as a warning to young noblemen to maintain an erotic discipline as future heads of feudal houses and as an upcoming political elite.
A Comprehensive Utility Function for Resource Allocation in Mobile Edge Computing
Creators: name: Ali, Zaiwar
name: Khaf, Sadia
name: Abba, Ziaul Haq
name: Abbas, Ghulam
name: Jiao, Lei
name: Irshad, Amna
name: Kwak, Kyung Sup
name: Bilal, Muhammad
Publisher: name: arXiv
Year: 2020
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences
subject: G.3; C.2.3; C.2.1
subject: 46Fxx

description: In mobile edge computing (MEC), one of the important challenges is how much resources of which mobile edge server (MES) should be allocated to which user equipment (UE). The existing resource allocation schemes only consider CPU as the requested resource and assume utility for MESs as either a random variable or dependent on the requested CPU only. This paper presents a novel comprehensive utility function for resource allocation in MEC. The utility function considers the heterogeneous nature of applications that a UE offloads to MES. The proposed utility function considers all important parameters, including CPU, RAM, hard disk space, required time, and distance, to calculate a more realistic utility value for MESs. Moreover, we improve upon some general algorithms, used for resource allocation in MEC and cloud computing, by considering our proposed utility function. We name the improved versions of these resource allocation schemes as comprehensive resource allocation schemes. The UE requests are modeled to represent the amount of resources requested by the UE as well as the time for which the UE has requested these resources. The utility function depends upon the UE requests and the distance between UEs and MES, and serves as a realistic means of comparison between different types of UE requests. Choosing (or selecting) an optimal MES with the optimal amount of resources to be allocated to each UE request is a challenging task. We show that MES resource allocation is sub-optimal if CPU is the only resource considered. By taking into account the other resources, i.e., RAM, disk space, request time, and distance in the utility function, we demonstrate improvement in the resource allocation algorithms in terms of service rate, utility, and MES energy consumption.
description: 17 pages, 3 Figures, Published in Computers, Materials & Continua
X-ray and $γ$-ray propagation in bent crystals with flat and cylindrical surfaces
Creators: name: Apolloni, A.
name: Mana, G.
name: Palmisano, C.
name: Zosi, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this paper we investigate x-ray and $γ$-ray propagation in crystals having a constant strain gradient and flat or cylindrical surfaces. When a displacement field is present, we solve the Takagi-Taupin equations either by the Riemann-Green method or by a numerical method. We apply the results to study the operation of a double-crystal Laue-Laue diffractometer having a flat collimating crystal followed by a bent analyzer crystal. In particular, we examine the effect of the analyzer strain on the location of the diffraction peaks in the dispersive and non-dispersive setup, thus confirming our previously reported peak-location as being set only by the diffracting plane spacing on the analyzer entrance surface.
description: 25 pages, 7 figures, 1 table
A Lyman-α protocluster at redshift 6.9
Creators: name: Hu, Weida
name: Wang, Junxian
name: Infante, Leopoldo
name: Rhoads, James E.
name: Zheng, Zhen-Ya
name: Yang, Huan
name: Malhotra, Sangeeta
name: Barrientos, L. Felipe
name: Jiang, Chunyan
name: González-López, Jorge
name: Prieto, Gonzalo
name: Perez, Lucia A.
name: Hibon, Pascale
name: Galaz, Gaspar
name: Coughlin, Alicia
name: Harish, Santosh
name: Kong, Xu
name: Kang, Wenyong
name: Khostovan, Ali Ahmad
name: Pharo, John
name: Valdes, Francisco
name: Wold, Isak
name: Walker, Alistair R.
name: Zheng, XianZhong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Protoclusters, the progenitors of the most massive structures in the Universe, have been identified at redshifts of up to 6.6. Besides exploring early structure formation, searching for protoclusters at even higher redshifts is particularly useful to probe the reionization. Here we report the discovery of the protocluster LAGER-z7OD1 at a redshift of 6.93, when the Universe was only 770 million years old and could be experiencing rapid evolution of the neutral hydrogen fraction in the intergalactic medium. The protocluster is identified by an overdensity of 6 times the average galaxy density, and with 21 narrowband selected Lyman-$α$ galaxies, among which 16 have been spectroscopically confirmed. At redshifts similar to or above this record, smaller protogroups with fewer members have been reported. LAGER-z7OD1 shows an elongated shape and consists of two subprotoclusters, which would have merged into one massive cluster with a present-day mass of $3.7 \times 10^{15}$ solar masses. The total volume of the ionized bubbles generated by its member galaxies is found to be comparable to the volume of the protocluster itself, indicating that we are witnessing the merging of the individual bubbles and that the intergalactic medium within the protocluster is almost fully ionized. LAGER-z7OD1 thus provides a unique natural laboratory to investigate the reionization process.
description: 9 pages, 5 figures, and 1 table. Accepted by Nature Astronomy
The First Direct Measurements of Magnetic Fields on Very Low-Mass Stars
Creators: name: Reiners, A.
name: Basri, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first direct magnetic field measurements on M dwarfs cooler than spectral class M4.5. Utilizing a new method based on the effects of a field on the FeH band near 1 micron, we obtain information on whether the integrated surface magnetic flux (Bf) is low (well under 1 kilogauss), intermediate (between 1 and about 2.5 kG), or strong (greater than about 3 kG) on a set of stars ranging from M2 down to M9. We also measure the rotational broadening (vsini) and Halpha emission for more than 20 stars. Our goal is to advance the understanding of how dynamo field production varies with stellar parameters for very low-mass stars, how the field and emission activity are related, and whether there is a connection between the rotation and magnetic flux. We find that fields are produced throughout the M-dwarfs. Among the early M stars we have too few targets to yield conclusive results. In the mid-M stars, there is a clear connection between slow rotation and weak fields. In the late-M stars, rotation is always measureable, and the strongest fields go with the most rapid rotators. These very cool rapid rotators have the largest magnetic flux in the whole sample. Halpha emission is found to be a good general proxy for magnetic fields. The drop-off in fractional emission near the bottom of the main sequence is not accompanied by a drop-off in magnetic flux, lending credence to the hypothesis that it is due to atmospheric coupling to the field rather than changes in the field itself. It is clear that the methodology we have developed can be further applied to discover more about the behavior of magnetic dynamos and magnetic activity in cool and fully convective objects.
description: 33 pages, accepted by ApJ, abstract abbreviated for astro-ph
Gamma distribution-based sampling for imbalanced data
Creators: name: Kamalov, Firuz
name: Denisov, Dmitry
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Imbalanced class distribution is a common problem in a number of fields including medical diagnostics, fraud detection, and others. It causes bias in classification algorithms leading to poor performance on the minority class data. In this paper, we propose a novel method for balancing the class distribution in data through intelligent resampling of the minority class instances. The proposed method is based on generating new minority instances in the neighborhood of the existing minority points via a gamma distribution. Our method offers a natural and coherent approach to balancing the data. We conduct a comprehensive numerical analysis of the new sampling technique. The experimental results show that the proposed method outperforms the existing state-of-the-art methods for imbalanced data. Concretely, the new sampling technique produces the best results on 12 out of 24 real life as well as synthetic datasets. For comparison, the SMOTE method achieves the top score on only 1 dataset. We conclude that the new technique offers a simple yet effective sampling approach to balance data.
description: Preprint of the paper that was published in Knowledge-Based Systems
Buddhism in Spain: an overview
Creators: name: DIEZ DE VELASCO, Francisco
Publisher: name: Zenodo
Year: 2020
Subjects: Buddhism in Spain, Tibetan Buddhism, Zen Buddhism, New Buddhism

description: Buddhism is currently the fourth religious minority in Spain after Islam, and Evangelical and Orthodox Christianity, in a country where the majority consider themselves Catholic (over 70%) or non-religious (around 25%). Of the non-Abrahamic religions, it is the one that has had most impact despite the recent introduction of practice groups in Spain (from 1977). Moreover, Spanish Buddhist centres and monuments are particularly remarkable and include enormous stupas, monasteries and retreat centres of significance. The Buddhism in Spain is fast-growing and there are currently around 85,000 active followers at some three hundred centres or practice groups.
Transcription of Why Centipede is Bald
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio file VP-161011-01: transcription of the story about why Centipede is bald (audio extracted from video file VP-051210-05), from 1:25 to the end of the story at 2:53
Absolute Calibration and Characterization of the Multiband Imaging Photometer for Spitzer: IV. The Spectral Energy Distribution Mode
Creators: name: Lu, N.
name: Smith, P. S.
name: Engelbracht, C. W.
name: Noriega-Crespo, A.
name: Morrison, J.
name: Gordon, K. D.
name: Stansberry, J.
name: Marleau, F. R.
name: Rieke, G. H.
name: Paladini, R.
name: Padgett, D. L.
name: Keene, J.
name: Latter, W. B.
name: Fadda, D.
name: Rho, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Spectral Energy Distribution (SED) mode of the Multiband Imaging Photometer for Spitzer (MIPS) Space Telescope provides low-spectral resolution (R ~ 15-25) spectroscopy in the far infrared using the MIPS 70 um detector. A reflective grating provides a dispersion of 1.7 um per pixel, and an effective wavelength coverage of 52.8--98.7 um over detector rows 1-27. The final 5 detector rows are contaminated by second-order diffracted light and are left uncalibrated. The flux calibration is based on observations of MIPS calibration stars with 70 um flux densities of 0.5--15 Jy. The point-source flux calibration accuracy is estimated to be 10% or better down to about 0.5 Jy at the blue end of the spectrum and to 2 Jy near the red end. With additional uncertainties from the illumination and aperture corrections included, the surface brightness calibration of extended sources is accurate to ~15%. Repeatability of better than 5% is found for the SED mode through multiple measurements of several calibration stars.
description: To Appear in PASP
A next generation upgraded observing platform for the automated Birmingham Solar Oscillations Network (BiSON)
Creators: name: Hale, S J
name: Chaplin, W J
name: Davies, G R
name: Elsworth, Y P
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Birmingham Solar Oscillations Network (BiSON) is a collection of ground-based automated telescopes observing oscillations of the Sun. The network has been operating since the early 1990s. We present development work on a prototype next generation observation platform, BiSON:NG, based almost entirely on inexpensive off-the-shelf components, and where the footprint is reduced to a size that can be inexpensively installed on the roof of an existing building. Continuous development is essential in ensuring that automated networks such as BiSON are well placed to observe the next solar cycle and beyond.
description: 12 pages, 6 figures. Accepted by SPIE Software and Cyberinfrastructure for Astronomy VI: 2020 December 13
Person and place on Vanua Lava, Vanuatu
Creators: name: Hess, Sabine Claudia
Publisher: name: Canberra, ACT : The Australian National University
Year: 2005

description: This thesis draws upon existing bodies of work on 'place' and 'person ' in Melanesia, but brings them together in a new way. In the anthropological literature on Vanuatu, 'place' has been discussed in relation to colonial history, political economy and effects of the national economy rather than in relation to concepts of the person, as has been done by researchers working in Papua New Guinea and other regions of the Pacific. Personhood in Melanesia has been theorised using concepts of dividuality, individuality, partibility, and degrees of permeability and autonomy. This research suggests that Marilyn Strathern's argument, that for 'Melanesian persons' the distinction between 'individual' and 'society' is not relevant, can be extended to the concepts of 'person' and place. However, these concepts also need to be considered in their specific local history, taking account of V anua La vans' ongoing engagement with modernity, in particular with different forms of individualism. Engagement with Christian individualism, with a singular person's relationship with God, presupposes a moral 'core self that makes a person responsible for their own actions. Capitalist notions of possessive individualism and the simultaneous change from an oral, flexible mode of knowledge transmission to a more rigid written one have also affected Vanua Lavans' understanding. This thesis provides a snapshot of contemporary notions of personhood and a 'Melanesian modernity' in flux, where discontinuities and continuities compete, merge, co-exist, and are moderated by a cultural logic that might be changing itself.
Koslowski, Jutta, Die Einheit der Kirche in der ökumenischen Diskussion
Creators: name: Plathow, Michael
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 58 Nr. 4 (2009): Ökumenische Rundschau, Band 58, Heft 4
The Chandra ACIS Survey of M33 (ChASeM33): Transient X-ray Sources Discovered in M33
Creators: name: Williams, Benjamin F.
name: Gaetz, Terrance J.
name: Haberl, Frank
name: Pietsch, Wolfgang
name: Shporer, Avi
name: Ghavamian, Parviz
name: Plucinsky, Paul P.
name: Mazeh, T.
name: Sasaki, Manami
name: Pannuti, Thomas G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Chandra ACIS Survey of M33 (ChASeM33) has acquired 7 fields of ACIS data covering M33 with 200 ks of exposure in each field. A catalog from the first 10 months of data, along with archival Chandra observations dating back to the year 2000, is currently available. We have searched these data for transient sources that are measured to have a 0.35-8.0 keV unabsorbed luminosity of at least 4$\times10^{35}$ erg s$^{-1}$ in one epoch and are not detected in another epoch. This set of the survey data has yielded seven such sources, including one previously-known supersoft source. We analyzed XMM-Newton data from the archive distributed over the years 2000 to 2003 to search for recurrent outbursts and to get a spectrum for the supersoft transient. We find only one recurrent transient in our sample. The X-ray spectra, light curves, and optical counterpart candidates of two of the other sources suggest that they are high-mass X-ray binaries. Archival Spitzer photometry and high X-ray absorption suggest that one of the sources is a highly variable background active galactic nucleus. The other three sources are more difficult to classify. The bright transient population of M33 appears to contain a large fraction of high-mass X-ray binaries compared with the transient populations of M31 and the Galaxy, reflecting the later morphology of M33.
description: 33 pages, 2 tables, 10 figures, accepted for publication in ApJ
Travelling home and empire British women in India, 1857-1939
Creators: name: Blunt, Alison Mary
Publisher: name: University of British Columbia
Year: 2009

description: This study focuses on the British wives of civil servants and army officers who lived in India from 1857 to 1939 to examine the translation of feminine discourses of bourgeois domesticity over imperial space. Three questions form the subject of this research. First, how were cultures of domesticity and imperialism intertwined in complex and often contradicatory ways over space? Second, did imperial rule, and the travel that it necessarily implied, challenge or reinforce the claim that 'there's no place like home'? Third, how and why were places both like and yet unlike 'home' produced by British women living in India? I start by examining the 'mutiny' of 1857-1858 as a period of domestic and imperial crisis, focusing on representations of and by British women at Cawnpore and Lucknow. Then, considering the place of British women in the post-'mutiny' reconstruction of imperial domesticity in India, I focus on two scales: first, home and empire-making on a household scale; and, second, seasonal travels by British women to hill stations in North India. In their travels both to and within India, British women embodied contested discourses of imperial domesticity. Throughout, I focus on the mobile, embodied subjectivities of memsahibs. While imperial histories have often neglected the roles played by British women in India, revisionist accounts have often reproduced stereotypical and / or celebratory accounts of memsahibs. In contrast, I examine the ambivalent basis of imperial and gendered stereotypes and conceptualise spatialised subjectivities in terms of embodiment, critical mobility, and material performativity. As members of an official elite, the British wives of civil servants and army officers came to embody many of the connections and tensions between domesticity and imperialism. Both during and after the 'mutiny,' the place of British women and British homes in India was contested. The place of British women and British homes in India reveal contradictions at the heart of imperial rule by reproducing and yet destabilizing imperial rule on a domestic scale
Supplementary Materials from Genetic mechanisms and correlational selection structure trait variation in a coral snake mimic
Creators: name: Curlis, John David
name: Rabosky, Alison R. Davis
name: Holmes, Iris A.
name: Renney, Timothy J.
name: Cox, Christian L.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: 60408 Genomics

description: Covariation among traits shapes both phenotypic evolution and ecological interactions across space and time. However, rampant geographical variation in the strength and direction of such correlations can be particularly difficult to explain through generalized mechanisms. By integrating population genomics, surveys of natural history collections and spatially explicit analyses, we tested multiple drivers of trait correlations in a coral snake mimic that exhibits remarkable polymorphism in mimetic and non-mimetic colour traits. We found that although such traits co-occur extensively across space, correlations were best explained by a mixture of genetic architecture and correlational selection, rather than by any single mechanism. Our findings suggest that spatially complex trait distributions may be driven more by the simple interaction between multiple processes than by complex variation in one mechanism alone. These interactions are particularly important in mimicry systems, which frequently generate striking geographical variation and genetic correlations among colour pattern traits.
Advancing MiNNLO$_{\rm PS}$ to diboson processes: $Zγ$ production at NNLO+PS
Creators: name: Lombardi, Daniele
name: Wiesemann, Marius
name: Zanderighi, Giulia
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We consider $Z γ$ production in hadronic collisions and present the first computation of next-to-next-to-leading order accurate predictions consistently matched to parton showers (NNLO+PS). Spin correlations, interferences and off-shell effects are included by calculating the full process $pp\to\ell^+\ell^-γ$. We extend the recently developed MiNNLO$_{\rm PS}$ method to genuine $2\to 2$ hard scattering processes at the LHC, which paves the way for NNLO+PS simulations of all diboson processes. This is the first $2\to2$ NNLO+PS calculation that does not require an a-posteriori multi-differential reweighting. We find that both NNLO corrections and matching to parton showers are crucial for an accurate simulation of the $Z γ$ process. Our predictions are in very good agreement with recent ATLAS data.
description: 42 pages, 10 figures, 2 tables
Thin loop algebras of Albert-Zassenhaus algebras
Creators: name: Avitabile, Marina
name: Mattarei, Sandro
Publisher: name: arXiv
Year: 2006
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 17B50; 17B70; 17B65

description: Thin Lie algebras are Lie algebras over a field, graded over the positive integers and satisfying a certain narrowness condition. In particular, all homogeneous components have dimension one or two, and are called diamonds in the latter case. The first diamond is the component of degree one, and the second diamond can only occur in degrees 3, 5, q or 2q-1, where q is a power of the characteristic of the underlying field. Here we consider several classes of thin Lie algebras with second diamond in degree q. In particular, we identify the Lie algebras in one of these classes with suitable loop algebras of certain Albert-Zassenhaus Lie algebras. We also apply a deformation technique to recover other thin Lie algebras previously produced as loop algebras of certain graded Hamiltonian Lie algebras.
description: 28 pages
Surrogate representation of sink strengths and the long-term role of crystalline interfaces in the development of irradiation-induced bubbles
Creators: name: Luo, Jing
name: Xin, Yong
name: Zhou, Zhengcheng
name: Zhu, Yichao
name: Guo, Xu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The present article addresses an early-stage attempt on replacing the analyticity-based sink strength terms in rate equations by surrogate models of machine learning representation. Here we emphasise, in the context of multiscale modelling, a combinative use of machine learning with scale analysis, through which a set of fine-resolution problems of partial differential equations describing the (quasi-steady) short-range individual sink behaviour can be asymptotically sorted out from the mean-field kinetics. Hence the training of machine learning is restrictively oriented, that is, to express the local and already identified, but analytically unavailable nonlinear functional relationships between the sink strengths and other local continuum field quantities. With the trained models, one is enabled to quantitatively investigate the biased effect shown by a void/bubble being a point defect sink, and the results are compared with existing ones over well-studied scenarios. Moreover, the faster diffusive mechanisms on crystalline interfaces are distinguishingly modelled by locally planar rate equations, and their linkages with rate equations for bulk diffusion are formulated through derivative jumps of point defect concentrations across the interfaces. Thus the distinctive role of crystalline interfaces as partial sinks and quick diffusive channels can be investigated. Methodologicalwise, the present treatment is also applicable for studying more complicated situation of long-term sink behaviour observed in irradiated materials.
Sparse Layered Graphs for Multi-Object Segmentation (poster)
Creators: name: Jeppesen, Niels
name: Christensen, Anders Nymark
name: Dahl, Vedrana Andersen
name: Dahl, Anders Bjorholm
Publisher: name: Zenodo
Year: 2021
Subjects: sparse layered graph
multi-label segmentation
graph cut
maxflow
mincut
image segmentation
cvpr2020

description: Poster originally made for the CVPR2020 poster presentation on Sparse Layered Graphs for Multi-Object Segmentation. Due to the change in format (virtual conference, due to COVID-19), this poster was not presented. Instead, a one minute video was presented, which can be found here: https://youtu.be/CFUYuL1J85k
Test of Anomaly Mediation at the LHC
Creators: name: Asai, Shoji
name: Moroi, Takeo
name: Yanagida, T. T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the anomaly-mediated supersymmetry breaking model with the assumption of the generic form of Kahler potential, gauginos are the only kinematically accessible superparticles to the LHC. We consider the LHC phenomenology of such a model assuming that the gluino is lighter than 1 TeV. We show that a significant number of charged Winos, which may travel O(10 cm) before the decay, are produced from the gluino production processes. Thus, in this class of model, it will be very important to search for short charged tracks using inner detectors. We also show that, if a large number of the charged Wino tracks are identified, the lifetime of the charged Wino can be measured, which provides us a test of anomaly mediation.
description: 12 pages, 5 figures
Time-dependent Fröhlich transformation approach for two-atom entanglement generated by successive passage through a cavity
Creators: name: Li, Yong
name: Bruder, C.
name: Sun, C. P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Time-dependent Fröhlich transformations can be used to derive an effective Hamiltonian for a class of quantum systems with time-dependent perturbations. We use such a transformation for a system with time-dependent atom-photon coupling induced by the classical motion of two atoms in an inhomogeneous electromagnetic field. We calculate the entanglement between the two atoms resulting from their motion through a cavity as a function of their initial position difference and velocity.
description: 7 pages, 3 figures
The Color Bimodality in Galaxy Clusters since z = 0.9
Creators: name: Loh, Y. -S.
name: Ellingson, E.
name: Yee, H. K. C.
name: Gilbank, D. G.
name: Gladders, M. D.
name: Barrientos, L. F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the evolution of the color-magnitude distribution of galaxy clusters from z = 0.45 to z = 0.9 using a homogeneously selected sample of ~1000 clusters drawn from the Red-Sequence Cluster Survey (RCS). The red fraction of galaxies decreases as a function of increasing redshift for all cluster-centric radii, consistent with the Butcher-Oemler effect, and suggesting that the cluster blue population may be identified with newly infalling galaxies. We also find that the red fraction at the core has a shallower evolution compared with that at the cluster outskirts. Detailed examination of the color distribution of blue galaxies suggests that they have colors consistent with normal spirals and may redden slightly with time. Galaxies of starburst spectral type contribute less than 5% of the increase in the blue population at high redshift, implying that the observed Butcher-Oemler effect is not caused by a unobscured starbursts, but is more consistent with a normal coeval field population.
description: 27 pages, 7 figures, accepted for publication in the ApJ
Modeling of Random Quasi-Phase-Matching in Birefringent Disordered Media
Creators: name: Müller, Jolanda S.
name: Morandi, Andrea
name: Grange, Rachel
name: Savo, Romolo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We provide a vectorial model to simulate second-harmonic generation (SHG) in birefringent, transparent media with an arbitrary configuration of non-linear ($χ^{(2)}$) crystalline grains. We apply this model on disordered assemblies of LiNbO$_3$ and BaTiO$_3$ grains to identify the influence of the birefringence on the random quasi-phase-matching process. We show that in monodispersed assemblies, the birefringence relaxes the grain-size dependence of the SHG efficiency. In polydispersed assemblies with sufficiently large grains, we find that the birefringence introduces an SHG efficiency enhancement of up to 54% compared to isotropic reference crystals, which is grain size independent. This enhancement increases linearly with the grain size, if the birefringent grains can be phase matched. These two different scaling behaviours are used in Kurtz and Perry's powder-technique to identify the phase-matchability of a material. We show on the example of LiNbO$_3$ and ADP that this technique cannot be applied when the grains get smaller than the coherence length, because the SHG scaling with the grain size becomes material specific.
description: Main: 7 pages, 4 Figures. Supplementaries: 11 pages, 8 figures
Viscous plasma evolution from gravity using AdS/CFT
Creators: name: Janik, Romuald A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We analyze the AdS/CFT dual geometry of an expanding boost-invariant plasma. We show that the requirement of nonsingularity of the dual geometry for leading and subasymptotic times predicts, without any further assumptions about gauge theory dynamics, hydrodynamic expansion of the plasma with viscosity coefficient exactly matching the one obtained earlier in the static case by Policastro, Son and Starinets.
description: 5 pages, no figures; v2: title changed in journal, version to appear in Phys. Rev. Lett
Molecular Collisions: from Near-cold to Ultra-cold
Creators: name: Liu, Yang
name: Luo, Le
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In the past two decades, the revolutionary technologies of creating cold and ultracold molecules have provided cutting-edge experiments for studying the fundamental phenomena of collision physics. To a large degree, the recent explosion of interest in the molecular collisions has been sparked by dramatic progress of experimental capabilities and theoretical methods, which permit molecular collisions to be explored deep in the quantum mechanical limit. Tremendous experimental advances in the field has already been achieved, and the authors, from an experimental perspective, provide a review of these studies for exploring the nature of molecular collisions occurring at temperatures ranging from the Kelvin to the nanoKelvin regime, as well as for applications of producing ultracold molecules.
description: 35 pages, 29 figures
QCD corrections to J/psi polarization of hadronproduction at Tevatron and LHC
Creators: name: Gong, Bin
name: Wang, Jian-Xiong
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The next to leading order (NLO) QCD corrections to J/psi polarization of hadronproduction at Tevatron and LHC are calculated. The results show that the J/psi polarization is extremely changed from more transversal polarization at leading order (LO) into more longitudinal polarization at NLO. Although it gives more longitudinal polarization than the recent experimental result on the J/psi polarization at Tevatron. It sheds light on the solution to the large discrepancy of J/psi polarization between theoretical predication and experimental measurement, and suggests that the next important step is to calculate the NLO correction for color octet state J/psi^{(8)} hadronproduction. Our calculations are performed in two ways where the polarizations are summed analytically or not, and they are checked with each other. It also gives a K factor for total cross section (ratio of NLO to LO) of about 2 and shows that the NLO corrections boost the J/psi production for about 2 order of magnitude in high transverse momentum p_t region of J/psi, which confirms the calculation by Campbell, Maltoni and Tramontano.
description: 4 pages, 3 figures
An F1000Research "Channel" for NextGenBUG?
Creators: name: Cock, Peter
Publisher: name: F1000Research
Year: 2015

description: A slide set that discusses the benefits of having a F1000Research channel dedicated to the NextgenBUG meetings, and how a channel can centralize the presentations that are given at each meeting through the year and provide visibility of the work for the wider bioinformatics and genomics community.
Temporal integration and attention : contributions of visible persistence and masking
Creators: name: Shore, David I.
Publisher: name: University of British Columbia
Year: 2009

description: The perception of moving objects and scenes illuminated by lightning are influenced by the inherent sluggishness of our visual system. This phenomenon, called visible persistence, has been considered a hard-wired aspect of human vision. As such, it has been assumed that its duration was independent of higher level goals. This assumption was tested in this thesis by experiments in which attention was manipulated and the duration of visible persistence was measured. Visible persistence was measured using a temporal integration task. Observers searched for the letters 'F or 'h' in displays consisting of two successive frames of complementary line segments. The interval between frames was varied to index the extent to which integration was possible. A review of temporal integration research made it clear that accuracy in such tasks is determined by both visible persistence and masking. To separate these influences, the task was studied under scotopic conditions, where masking does not interfere with persistence. These results were compared with those collected under photopic conditions, where persistence and masking play opposing roles. The observer's focus of attention was manipulated by varying the number of potential search items (set size). The similarity between target and distractor items was varied to distinguish between attentional and non-attentional accounts of the results. Experiment 1 established baseline performance for search in brief displays under photopic and scotopic conditions. The effect of set size was largest when target and distractor items were most similar. The effect of similarity was least pronounced for scotopic viewing. This reduced effect was attributed to an increase in persistence for scotopic viewing which provided an effectively longer exposure duration and therefore an easier search. Experiment 2 added the manipulation of frame interval in order to measure temporal integration. The effect of set size was constant across frame interval in the scotopic condition, whereas, it increased with frame interval in the scotopic condition. This indicated that attention had no effect on visible persistence, but could reduce the extent of metacontrast masking. Experiment 3 was designed to rule out non-attentional causes for the set size effects in the photopic condition. Set size was held constant while relevant target locations were indicated by instruction. The effect of frame interval was less pronounced with fewer items to attend. These results support two main conclusions: attention does not influence visible persistence, and attention reduces the effects of metacontrast masking. In addition, the methodologies used to study temporal integration and visual search were extended in several important ways.
Interaction corrections: temperature and parallel field dependencies of the Lorentz number in two-dimensional disordered metals
Creators: name: Catelani, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The electron-electron interaction corrections to the transport coefficients are calculated for a two-dimensional disordered metal in a parallel magnetic field via the quantum kinetic equation approach. For the thermal transport, three regimes (diffusive, quasiballistic and truly ballistic) can be identified as the temperature increases. For the diffusive and quasiballistic regimes, the Lorentz number dependence on the temperature and on the magnetic field is studied. The electron-electron interactions induce deviations from the Wiedemann-Franz law, whose sign depend on the temperature: at low temperatures the long-range part of the Coulomb interaction gives a positive correction, while at higher temperature the inelastic collisions dominate the negative correction. By applying a parallel field, the Lorentz number becomes a non-monotonic function of field and temperature for all values of the Fermi-liquid interaction parameter in the diffusive regime, while in the quasiballistic case this is true only sufficiently far from the Stoner instability.
description: 11 pages, 5 figures. Appendix A revised, notes added
High Spatial and Spectral Resolution Observations of the Forbidden 1.707 micron Rovibronic SO Emissions on Io: Evidence for Widespread Stealth Volcanism
Creators: name: de Pater, Imke
name: de Kleer, Katherine
name: Adamkovics, Mate
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present observations obtained with the 10-m Keck telescopes of the forbidden SO rovibronic transition at 1.707 micron on Io while in eclipse. We show its spatial distribution at a resolution of ~0.12" and a spectral resolution of R ~2500, as well as disk-integrated spectra at a high spectral resolution (R~15,000). Both the spatial distribution and the spectral shape of the SO emission band vary considerably across Io and over time. In some cases the SO emissions either in the core or the wings of the emission band can be identified with volcanoes, but the largest areas of SO emissions usually do not coincide with known volcanoes. We suggest that the emissions are caused by a large number of stealth plumes, produced through the interaction of silicate melts with superheated SO2 vapor at depth. The spectra, in particular the elevated wing of the emission band near 1.69 micron, and their spatial distribution strongly suggest the presence of non-LTE processes in addition to the direct ejection of excited SO from the (stealth and other) volcanic vents.
description: 30 pages, 17 figures, 2 tables
The primordial information content of Rayleigh Anisotropies
Creators: name: Coulton, William R.
name: Beringue, Benjamin
name: Meerburg, P. Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Anisotropies in the cosmic microwave background (CMB) are primarily generated by Thomson scattering of photons by free electrons. Around recombination, the Thomson scattering probability quickly diminishes as the free electrons combine with protons to form neutral hydrogen off which CMB photons can scatter through Rayleigh scattering. Unlike Thomson scattering, Rayleigh scattering is frequency dependent resulting in the generation of anisotropies with a different spectral dependence. Unfortunately the Rayleigh scattering efficiency rapidly decreases with the expansion of the neutral universe, with the result that only a small percentage of photons are scattered by neutral hydrogen. Although the effect is very small, future CMB missions with higher sensitivity and improved frequency coverage are poised to measure Rayleigh scattering signal. The uncorrelated component of the Rayleigh anisotropies contains unique information on the primordial perturbations that could potentially be leveraged to expand our knowledge of the early universe. In this paper we explore whether measurements of Rayleigh scattering anisotropies can be used to constrain primordial non-Gaussianity (NG) and examine the hints of anomalies found by WMAP and \textit{Planck} satellites. We show that the additional Rayleigh information has the potential to improve primordial NG constraints by $30\%$, or more. Primordial bispectra that are not of the local type benefit the most from these additional scatterings, which we attribute to the different scale dependence of the Rayleigh anisotropies. Unfortunately this different scaling means that Rayleigh measurements can not be used to constrain anomalies or features on large scales. On the other hand, anomalies that may persist to smaller scales, such as the potential power asymmetry seen in WMAP and \textit{Planck}, could be improved by the addition of Rayleigh measurements.
description: 12 pages, 5 figures
Dynamics evolution of a solar active-region filament from quasi-static state to eruption: rolling motion, untwisting motion, material transfer, and chirality
Creators: name: Yan, X. L.
name: Li, Q. L.
name: Chen, G. R.
name: Xue, Z. K.
name: Feng, L.
name: Wang, J. C.
name: Yang, L. H.
name: Zhang, Y.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: To better understand magnetic structure and eruptive process of solar filaments, a solar active-region filament (labeled F2) eruption associated with a B-class flare was investigated by using high-resolution H$α$ data from the 1 m New Vacuum Solar Telescope (NVST), combined with EUV observations of the Solar Dynamical Observatory (SDO). The filament F2 was disturbed by another filament (labeled F1) eruption that experienced a whip-like motion. Before the filament F2 eruption, the Dopplergrams show that the southern and the northern parts of the filament F2 body exhibit blueshift and redshift along the filament spine, simultaneously. It implies that the filament F2 was rolling from one side to the other. During the filament F2 eruption, the Doppler velocity shifts of the filament body are opposite to that before its eruption. It demonstrates that the filament body exhibits an untwisting motion, which can be also identified by tracing the movement of the eruptive filament threads. Moreover, it is found that the material of the filament F2 was transferred to the surrounding magnetic field loops, which is caused by magnetic reconnection between the filament F2 and the surrounding magnetic loops. According to the right-bearing threads of the filament F2 before its eruption, it can be deduced that the filament F2 is initially supported by a sheared arcade. The following observations reveal that the twisted magnetic structure of the filament F2 formed in the eruption phase.
description: 16 pages, 7 figures, accepted for publication in ApJ