cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Worker Flows and Labour Market Adjustment during the Great Recession: Evidence from a Large Shock
Creators: name: Lehmann, Hartmut
name: Razzolini, Tiziano
name: Zaiceva, Anzelika
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2016
Subjects: SECS-P/01 Economia politica

description: This paper analyzes how the labor market adjusts to the Great Recession. To this aim, we use the
data for Latvia, a country that has experienced one of the most severe recessions in Europe and a
subsequent remarkable recovery. Employing longitudinal EU SILC data and a panel data set
constructed by us from various waves of the Latvian Labour Force Survey (LLFS), we estimate
worker transitions between labor market states. Labor market adjustment takes place predominantly
at the extensive margin since it is driven by flows from permanent wage employment to unemployment. We also show that older, non-Latvian and above all less skilled workers are especially hard hit by the economic crisis. Estimated transitions between four mutually exclusive occupational groups demonstrate that downward mobility is very limited even during the Great Recession. Finally, wage regressions suggest that job mobility is not associated with increased labour productivity during and immediately after the crisis.
Two-electron lateral quantum-dot molecules in a magnetic field
Creators: name: Helle, M.
name: Harju, A.
name: Nieminen, R. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Laterally coupled quantum dot molecules are studied using exact diagonalization techniques. We examine the two-electron singlet-triplet energy difference as a function of magnetic field strength and investigate the magnetization and vortex formation of two- and four-minima lateral quantum dot molecules. Special attention is paid to the analysis of how the distorted symmetry affects the properties of quantum-dot molecules.
description: 18 pages, 26 figures
Estimating the Effects of Exchange Rate Volatility on Export Volumes
Creators: name: Wang, Kai-Li
name: Barrett, Christopher B.
name: Wang, Kai-Li
name: Barrett, Christopher B.
Publisher: name: Unknown
Year: 2007
Subjects: subject: International Relations/Trade
subject: agricultural trade
subject: exchange rate
subject: expectations
subject: GARCH

description: This paper takes a new empirical look at the long-standing question of the effect of exchange rate volatility on international trade flows by studying the case of Taiwan's exports to the United States from 1989-1998. In particular, we employ sectoral-level, monthly data and an innovative multivariate GARCH-M estimator with corrections for leptokurtic errors. This estimator allows for the possibility that traders' forward-looking contracting behavior might condition the way in which exchange rate movement and associated risk affect trade volumes. Change in importing country industrial production and change in the expected exchange rate are found to jointly drive the trade volumes. More strikingly, monthly exchange rate volatility affects agricultural trade flows, but not trade in other sectors. These results differ significantly from those obtained using more conventional and restrictive modeling assumptions.
An Economic Analysis of Genetic Information: Leptin Genotyping in Fed Cattle
Creators: name: DeVuyst, Eric A.
name: Bullinger, Jared R.
name: Bauer, Marc L.
name: Berg, Paul T.
name: Larson, Daniel M.
name: DeVuyst, Eric A.
name: Bullinger, Jared R.
name: Bauer, Marc L.
name: Berg, Paul T.
name: Larson, Daniel M.
Publisher: name: Unknown
Year: 2007
Subjects: subject: Livestock Production/Industries
subject: beef cattle
subject: genetics
subject: leptin genotype
subject: value of information

description: A polymorphism in the leptin gene is associated with fat deposition. Since fed cattle are often priced on a grid that considers yield and quality grades, fat deposition is an important factor in profitability. Using data from 590 crossbred steers and heifers, we simulate carcass traits to various days-on-feed and compute the associated profit under three price grids. Results indicate that leptin genotype does affect value by as much as $48 per head but has little impact on days-on-feed. Given current commercial testing fees of $40-$50 per sample, genotyping of feeder cattle appears to break even at best.
Study of $qqq\bar{q}Q$ pentaquark system in the Chiral Quark Model
Creators: name: Zhang, Qi
name: Hu, Xiao-Huang
name: He, Bing-Ran
name: Ping, Jia-Lun
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: With the discovery of some hidden-charm pentaquark resonances by the LHCb Collaboration, investigations of pentaquark states containing heavy quarks have aroused the interest of theorists. We study herein $qqq\bar{q}Q$ ($q = u$ or $d$, $Q=c$ or $b$) pentaquark system, in the framework of the chiral quark model. In consequence, some charmed and bottomed pentaquarks are considered to exist by five-body dynamical calculations. In the charm sector, $Σ_cπ(IJ^P=0\frac{1}{2}^-)$ and $Σ_c^*π(IJ^P=0\frac{3}{2}^-)$ are possible candidates of $Λ_c(2595)$ and $Λ_c(2625)$, respectively. Besides, two high-spin states, $Σ_c^*ρ(IJ^P=0\frac{5}{2}^-)$ and $ΔD^*(IJ^P=1\frac{5}{2}^-)$, are also found in the energy region of $3.2 \sim 3.3$ GeV. In the bottom sector, $Σ_bπ(IJ^P=0\frac{1}{2}^-)$, $Σ_b^*π(IJ^P=0\frac{3}{2}^-)$ could be candidates of $Λ_b(5912)$ and $Λ_b(5920)$, respectively. And $Σ_b^*ρ(IJ^P=0\frac{5}{2}^-)$ and $ΔB^*(IJ^P=1\frac{5}{2}^-)$ are found in the energy region of $6.5 \sim 6.6$ GeV. $Σ_c^{(*)}π$ and $Σ_b^{(*)}π$ are expected as compact states, while $Σ_c^*ρ$, $Σ_b^*ρ$, $ΔD^*$ and $ΔB^*$ are expected as molecular states.
description: 11 pages, 1 figure
Practising politics in the Pacific islands : insider perspectives
Creators: name: Corbett, Jack
Publisher: name: The Australian National University
Year: 2012
Subjects: subject: Politicians Islands of the Pacific
subject: Islands of the Pacific Politics and government

description: Politicians are influential yet contentious figures whose daily activities are the subject of considerable speculation and intrigue, and whose motivations are often denigrated as morally questionable, if not reprehensible. While conjecture about the value of politicians has an easy resonance with democratic politics everywhere, it has particular significance in the Pacific Islands where the influence of institutional transfer and the precepts of development tend to cast political practice, and by extension the politicians who undertake the job, as having been corrupted or diverted from their ideal purpose. Largely missing from these accounts are the views and reflections of politicians themselves, their stories and experiences. In this thesis I seek to understand political life in the Pacific Islands from a politician-centred perspective. Through an examination of recorded life histories and other publically available sources, in-depth interviews and observation, I draw together a collective portrait that describes how politicians enter politics, how they see their work, including their triumphs and disappointments, and explores why they seek election, and why they ultimately leave. What emerges from this portrait is a picture of a group of people undertaking a job that is both functional and intrinsically meaningful. I argue that popular negativity directed at politicians in the Pacific Islands stems from the distinctive nature of post-independence which generates unfavourable comparisons between contemporary politicians and a valorised first generation of political leaders; and pejorative comparisons between the practice of politics in the Pacific and ideal leadership models, including 'professionalised' politicians and more recently 'mobilising' or 'developmental' leaders. More generally, I argue that attempts to define the value of politicians in political theory tend to focus heavily on the figure of the politician, rather than the people themselves, and by extension dehumanise political practice and devalue the importance of endeavour to the purpose and function of politics and its associated institutions. Building on the findings of similar politician-centred studies from elsewhere, I conclude that revaluing endeavour, defined by the willingness of politicians to be involved, deepens our understanding of political life and allows us to reclaim respect for the people who occupy public office. - provided by Candidate.
D4.4 Library for AGRICORE data visualisation purposes
Creators: name: Ayesa Advanced Technologies
name: Idener AI
Publisher: name: Zenodo
Year: 2022
Subjects: AGRICORE H2020

description: AGRICORE is a research project funded by the European Commission under the RUR-04-2018 call, part of the H2020 programme, which proposes an innovative way to apply agent-based modelling to improve the capacity of policymakers to evaluate the impact of agricultural-related measurements under and outside the framework of the Common Agricultural Policy (CAP).Within the AGRICORE suite of tools, its main graphical user interface (GUI) can be found. Developed as a cross-platform desktop application, this tool enables users to configure and launch simulations on agricultural policies using synthetic populations and the Agent-based model (ABM). In such simulations, the analysis of the effect of the different policy measures is carried out through the computation of a series of key performance indicators (KPIs). Once finished the simulations, these KPIs will be used to assist in the analysis and visualisation of the results, representing them graphically in interactive charts and maps that will help users and policy makers to draw conclusions and support decision-making processes.This document presents an analysis of different tools for the visualisation of data in charts and maps with the aim of providing the platform with the most suitable tools based on the objectives, requirements and characteristics of the AGRICORE project. The document begins with an introductory chapter that analyses the need to explore these tools and why they are necessary for the project. Then, it continues with a chapter explaining and comparing, with advantages and disadvantages, each of the tools selected and analysed. Finally, it explains the tool chosen for data visualisation in AGRICORE.A third chapter explains how the chosen solution will be used in the platform and finally, a concluding chapter summarises the conclusions drawn and explores the next steps to be taken.
"Apostolizität" und "Sukzession" in den Konvergenz-Erklärungen von Lima
Creators: name: Barth, Hans-Martin
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 33 Nr. 3 (1984): Ökumenische Rundschau, Band 33, Heft 3
Non-Supersymmetric Attractors in String Theory
Creators: name: Tripathy, Prasanta K.
name: Trivedi, Sandip P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We find examples of non-supersymmetric attractors in Type II string theory compactified on a Calabi Yau three-fold. For a non-supersymmetric attractor the fixed values to which the moduli are drawn at the horizon must minimise an effective potential. For Type IIA at large volume, we consider a configuration carrying D0, D2, D4 and D6 brane charge. When the D6 brane charge is zero, we find for some range of the other charges, that a non-supersymmetric attractor solution exists. When the D6 brane charge is non-zero, we find for some range of charges, a supersymmetry breaking extremum of the effective potential. Closer examination reveals though that it is not a minimum of the effective potential and hence the corresponding black hole solution is not an attractor. Away from large volume, we consider the specific case of the quintic in CP^4. Working in the mirror IIB description we find non-supersymmetric attractors near the Gepner point.
description: Added a few clarifications
Riesz transforms on compact quantum groups and strong solidity
Creators: name: Caspers, Martijn
Publisher: name: arXiv
Year: 2020
Subjects: subject: Operator Algebras (math.OA)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: One of the main aims of this paper is to give a large class of strongly solid compact quantum groups. We do this by using quantum Markov semi-groups (QMS's) and non-commutative Riesz transforms. We introduce a property for QMS's of central multipliers on a compact quantum group which we shall call approximate linearity with almost commuting intertwiners. We show that this property is stable under free products, monoidal equivalence, free wreath products and dual quantum subgroups. Examples include in particular all the (higher dimensional) free orthogonal easy quantum groups. We then show that a compact quantum group with a QMS that is approximately linear with almost commuting intertwiners, satisfies the immediately gradient-$\mathcal{S}_2$ condition from [Cas21] and derive strong solidity results (following [Cas21], [OzPo10], [Pet09]). Using the non-commutative Riesz transform we also show that these quantum groups have the Akemann-Ostrand property; in particular the same strong solidity results follow again (now following [Iso15b], [PoVa14]).
description: Accepted for Journal of the Institute of Mathematics of Jussieu
Popular trials/criminal fictions/celebrity feminism and the Bernardo/Homolka case
Creators: name: San Roque, Mehera Rose
Publisher: name: University of British Columbia
Year: 2009

description: This thesis examines representations of a Canadian criminal case, the Bernardo/Homolka case. I argue that the Bernardo/Homolka case constitutes what Robert Hariman has termed a "popular trial"; a trial or case that provides "the impetus and the forum for major public debates" and generates discussion extending beyond the immediate court proceedings, to broader issues concerning the law and the legal system. As a 'popular trial', or as what Nancy Fraser terms a moment of "hyperpublicity", the Bernardo/Homolka case provides a means of understanding mechanisms of public opinion making and broader relations of inequality. I argue that representations of the case can function ideologically to reinforce relations of inequality, through the ways in which they shape the cultural authority of feminism as a public discourse in Canada. I draw on the work of materialist feminists, such as Rosemary Hennessy and Nancy Fraser, to reveal the assumptions underlying different readings of the case that have problematic implications for the credibility of feminist analyses of systemic inequality, and for feminist interventions into the legal system. Karla Homolka was convicted of the manslaughter of two teenage girls, Kristen French and Leslie Mahaffy in Ontario in 1993. Her sentence was determined by a plea bargain and she was the principal witness in the case against her ex-husband, Paul Bernardo, who was convicted on charges relating to the abduction, assault and murder of the two girls in 1995. The case gave rise to intense public discussion, extensive media coverage and has been the subject of numerous books and reports. This thesis examines three of the texts that have been published in response to the case: Karla's Web: A Cultural Investigation of the Mahaffy French Murders (Toronto: Viking 1994) by Frank Davey, a professor of English; When She Was Bad: Violent Women and the Myth of Innocence (Toronto: Random House 1997) by journalist Patricia Pearson; and a fictional response, Paul's Case: the Kingston Letters (Toronto: Insomniac Press 1997) by Canadian poet and cultural critic, Lynn Crosbie. I examine what these three books can tell us about popular and legal perceptions of feminism, male and female criminality, and violence against women. In particular, I look at the ways in which Pearson and Crosbie have interpreted the case as being relevant to, and representative of wider feminist debates about equality, female sexuality, the nature of female criminality, and the place of feminism in public life and the legal system. While I conclude that Pearson's book is the most problematic account of the case, I point to ways in which all three of the texts function to disable or discredit feminism's cultural authority and feminist interventions into public institutions.
แก้วจอมแก่น แก้วจอมซน: วรรณกรรมคำสอนเด็กร่วมสมัย
Creators: name: เก๋ แดงสกุล
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2015
Subjects: -

description: วรรณวิทัศน์, 15, พิเศษ, 3-32
Characteristics of ambient and focal processing during the visual exploration of dynamic stimuli
Creators: name: Pannasch, Sebastian
Publisher: name: F1000Research
Year: 2016

description: Analyzing the time course of eye movements during free exploration of real-world scenes often reveal an increase in fixation durations together with a decrease in saccade amplitudes which has been explained as a shift from ambient (global) to focal (local) processing. The ambient mode refers to bottom-up processing, serving global orientation controlled by the saliency of the stimulus. In contrast, the focal mode is rather related to top-down processing and associated with the identification of object features. The ambient-to-focal strategy seems to be evoked by the onset of images but a systematic investigation for dynamic stimuli is still missing. If this pattern represents an omnipresent viewing characteristic for new visual information, it should also be evoked by the onset of dynamic scenes. Furthermore, an interruption of the dynamic information flow, caused by a scene change, might also lead to a restart of the ambient-to-focal strategy. To address this question, we recorded videos where the viewer walked through indoor scenarios when no other persons were present. From the recorded material we generated 3 different video clips, each with an approximate length of 10 minutes, containing several scene changes. Scene changes were defined as either abrupt scene cuts (e.g. cut from room to staircase) or pan shots (horizontal camera scans providing a new perspective). We analyzed fixation durations and saccade amplitudes focusing on the time course of visual exploration following the video onset, differences before and after scene changes, and spatio-temporal characteristics of the viewing behavior in relation to the stimulus saliency and the scanning similarity between subjects. Initial results indicate the ambient-to-focal strategy also for the exploration of dynamic stimuli. These findings further support the ambient/focal distinction, which can help to decode complex viewing pattern into distinct processing levels that are related to the interplay of bottom-up and top-down mechanisms.
A minimal model for the onset of slip pulses in frictional rupture
Creators: name: Thøgersen, Kjetil
name: Aharonov, Einat
name: Barras, Fabian
name: Renard, François
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: We present a minimal one-dimensional model for the transition from crack-like to pulse-like propagation of frictional rupture. In its non-dimensional form, the model depends on only two free parameters: the non-dimensional pre-stress and an elasticity ratio that accounts for the finite height of the system. The model contains stable slip pulse solutions for slip boundary conditions, and unstable slip pulse solutions for stress boundary conditions. Results demonstrate that the existence of pulse-like ruptures requires only elastic relaxation and redistribution of initial pre-stress. The novelty of our findings is that pulse-like propagation along frictional interfaces is a generic elastic feature, whose existence is not sensitive to particular rate- or slip-dependencies of dynamic friction.
X(2175) as a resonant state of the $ϕK \bar{K}$ system
Creators: name: Torres, A. Martínez
name: Khemchandani, K. P.
name: Geng, L. S.
name: Napsuciale, M.
name: Oset, E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We perform a Faddeev calculation for the three mesons system, $ϕK \bar{K}$, taking the interaction between two pseudoscalar mesons and between a vector and a pseudoscalar meson from the chiral unitary approach. We obtain a neat resonance peak around a total mass of 2150 MeV and an invariant mass for the $K \bar{K}$ system around 970 MeV, very close to the $f_0(980)$ mass. The state appears in I=0 and qualifies as a $ϕf_0(980)$ resonance. We enlarge the space of states including $ϕππ$, since $ππ$ and $K \bar{K}$ build up the $f_0$ (980), and find moderate changes that serve to quantify theoretical uncertainties. No state is seen in I=1. This finding provides a natural explanation for the recent state found at BABAR and BES, the X(2175), which decays into $ϕf_0(980)$.
description: version accepted for publication
Connecting object recognition performance, adaptation after effects, and form processing strategies in high-level vision
Creators: name: Dennett, Hugh William
Publisher: name: The Australian National University
Year: 2012
Subjects: subject: QP475.D46 2012
subject: Visual perception
subject: Cognition
subject: Eye Adaptation

description: Psychophysical techniques such as adaptation after effects are commonly used to investigate face and object recognition, and have played an important role in the development of models of high-level visual shape coding. Yet the nature of the relationship between these behavioural effects and the underlying neuronal processes is currently unclear. An open question concerns the extent to which face and object after effects reflect the properties of high-level shape coding, as opposed to other stages of visual processing. A related question concerns what aspects of high-level coding can be inferred from after effects. This thesis reports four psychophysical investigations of face and object recognition, high-level shape coding, and adaptation after effects in high-level form vision. The first study introduces a new test of within-class object recognition-the Cambridge Car Memory Test-and provides norms for the test based on a sample of 153 young adults. The second study investigated whether face eye-height after effects would be correlated with face recognition ability, based on the theoretical notion that face after effect magnitude should reflect the sensitivity of neuronal face-space coding. Results showed a modest but significant correlation between face eye-height after effects and recognition ability, arguing that eye-height after effects can tap processes which contribute to face recognition ability. The third study investigated the extent to which global face distortion after effects tap face-level processes, as opposed to shape-generic processes. Results showed complete transfer of after effects from a scrambled face adaptor to non-face test stimuli, but only partial transfer from an intact face adaptor to non-face test stimuli, arguing that global face distortion after effects have both face-specific and shape-generic components.The final study investigated the coding strategy underlying perception of horse shape and tested whether adaptation to horses can enhance subsequent discriminability of horse shape. Results were consistent with norm-based coding with linear response functions and showed that adaptation to horses can improve discriminability of horse shape. In sum, the evidence reported in this thesis argues that face and object after effects can be a useful method of investigating high-level visual shape coding, but that these effects should be interpreted with caution given that they will generally reflect the combined activity of multiple stages of processing.
โคลงดั้นเรื่องปฏิสังขรณ์วัดพระเชตุพน: จากบันทึกประวัติศาสตร์สู่การสร้างสรรค์วรรณกรรมยอพระเกียรติ
Creators: name: วรางคณา ศรีกำเหนิด
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2015
Subjects: -

description: วรรณวิทัศน์, 15, พิเศษ, 33-76
Recent developments of the Lauricella string scattering amplitudes and their exact SL(K+3,C) Symmetry
Creators: name: Lai, Sheng-Hong
name: Lee, Jen-Chi
name: Yang, Yi
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this review we propose a new perspective to demonstrate Gross conjecture on high energy symmetry of string theory. We review the construction of the exact string scattering amplitudes (SSA) of three tachyons and one arbitrary string state, or the Lauricella SSA (LSSA), in the 26D open bosonic string theory. These LSSA form an infinite dimensional representation of the SL(K+3,C) group. Moreover, we show that the SL(K+3,C) group can be used to solve all the LSSA and express them in terms of one amplitude. As an application in the hard scattering limit, the LSSA can be used to directly prove Gross conjecture which was previously corrected and proved by the method of decoupling of zero norm states (ZNS). Finally, the exact LSSA can be used to rederive the recurrence relations of SSA in the Regge scattering limit with associated SL(5,C) symmetry and the extended recurrence relations (including the mass and spin dependent string BCJ relations) in the nonrelativistic scattering limit with associated SL(4,C) symmetry discovered recently.
description: 54 pages, 1 figure, minor modification, references added. arXiv admin note: text overlap with arXiv:1806.05033
Summary of ICGC04 Cosmology Workshop
Creators: name: Souradeep, Tarun
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Cosmology is passing through a golden phase of rapid advance. The cosmology workshop at ICGC-2004 attracted a large number of research contributions from diverse topics of cosmology. I attempt to classify and summarize the research work and results of the oral and poster presentations made at the meeting.
description: 13 pages, 4 figures, Latex style files included; Chairperson's summary of the Workshop on Cosmology in the proceedings of ICGC-04, Jan.5-10,2004
Rough translation of file 027_A (collection LA 256)
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: subject: hup

description: Audio file VP-200716-10a: Audio file VP-200716-10a: rough translation (30 second to 3-4 minute chunks) of file 027_A (tape 27, side A) from LA 256 (collection of recordings given to the Berkeley Language Center by Verdena), from 27:11 to 47:33; no transcription in this session, translation only. Discussion after the end of the translation originally in this file has been moved to a separate file, VP-200716-10b. Due to re-numbering, tape 027_A has been assigned to the CLA item number LA256.027, audio file LA256.027A.
Linear and branched polymers on fractals
Creators: name: Dhar, Deepak
name: Singh, Yashwant
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: This is a pedagogical review of the subject of linear polymers on deterministic finitely ramified fractals. For these, one can determine the critical properties exactly by real-space renormalization group technique. We show how this is used to determine the critical exponents of self-avoiding walks on different fractals. The behavior of critical exponents for the $n$-simplex lattice in the limit of large $n$ is determined. We study self-avoiding walks when the fractal dimension of the underlying lattice is just below 2. We then consider the case of linear polymers with attractive interactions, which on some fractals leads to a collapse transition. The fractals also provide a setting where the adsorption of a linear chain near on attractive substrate surface and the zipping-unzipping transition of two mutually interacting chains can be studied analytically. We also discuss briefly the critical properties of branched polymers on fractals.
description: 46 pages, 23 figures
Cross-Correlation of Planck CMB Lensing with DESI-Like LRGs
Creators: name: Kitanidis, Ellie
name: White, Martin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Cross-correlations between the lensing of the cosmic microwave background (CMB) and other tracers of large-scale structure provide a unique way to reconstruct the growth of dark matter, break degeneracies between cosmology and galaxy physics, and test theories of modified gravity. We detect a cross-correlation between DESI-like luminous red galaxies (LRGs) selected from DECaLS imaging and CMB lensing maps reconstructed with the Planck satellite at a significance of $S/N = 27.2$ over scales $\ell_{\rm min} = 30$, $\ell_{\rm max} = 1000$. To correct for magnification bias, we determine the slope of the LRG cumulative magnitude function at the faint limit as $s = 0.999 \pm 0.015$, and find corresponding corrections on the order of a few percent for $C^{κg}_{\ell}, C^{gg}_{\ell}$ across the scales of interest. We fit the large-scale galaxy bias at the effective redshift of the cross-correlation $z_{\rm eff} \approx 0.68$ using two different bias evolution agnostic models: a HaloFit times linear bias model where the bias evolution is folded into the clustering-based estimation of the redshift kernel, and a Lagrangian perturbation theory model of the clustering evaluated at $z_{\rm eff}$. We also determine the error on the bias from uncertainty in the redshift distribution; within this error, the two methods show excellent agreement with each other and with DESI survey expectations.
description: 18 pages, 14 figures, 6 tables; final version accepted for publication
Discovery of a Galaxy Cluster in the Foreground of the Wide-Separation Quasar Pair UM425
Creators: name: Green, Paul J.
name: Infante, Leopoldo
name: Lopez, Sebastian
name: Aldcroft, Thomas L.
name: Winn, Josh N.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery of a cluster of galaxies in the field of UM425, a pair of quasars separated by 6.5arcsec. Based on this finding, we revisit the long-standing question of whether this quasar pair is a binary quasar or a wide-separation lens. Previous work has shown that both quasars are at z=1.465 and show broad absorption lines. No evidence for a lensing galaxy has been found between the quasars, but there were two hints of a foreground cluster: diffuse X-ray emission observed with Chandra, and an excess of faint galaxies observed with the Hubble Space Telescope. Here we show, via VLT spectroscopy, that there is a spike in the redshift histogram of galaxies at z=0.77. We estimate the chance of finding a random velocity structure of such significance to be about 5%, and thereby interpret the diffuse X-ray emission as originating from z=0.77, rather than the quasar redshift. The mass of the cluster, as estimated from either the velocity dispersion of the z=0.77 galaxies or the X-ray luminosity of the diffuse emission, would be consistent with the theoretical mass required for gravitational lensing. The positional offset between the X-ray centroid and the expected location of the mass centroid is about 40kpc, which is not too different from offsets observed in lower redshift clusters. However, UM425 would be an unusual gravitational lens, by virtue of the absence of a bright primary lensing galaxy. Unless the mass-to-light ratio of the galaxy is at least 80 times larger than usual, the lensing hypothesis requires that the galaxy group or cluster plays a uniquely important role in producing the observed deflections. Based on observations performed with the Very Large Telescope at the European Southern Observatory, Paranal, Chile.
description: 12 pages, accepted by ApJ 2005, May 10
Limitations of Quantum Simulation Examined by Simulating a Pairing Hamiltonian using Nuclear Magnetic Resonance
Creators: name: Brown, Kenneth R.
name: Clark, Robert J.
name: Chuang, Isaac L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum simulation uses a well-known quantum system to predict the behavior of another quantum system. Certain limitations in this technique arise, however, when applied to specific problems, as we demonstrate with a theoretical and experimental study of an algorithm to find the low-lying spectrum of a Hamiltonian. While the number of elementary quantum gates does scale polynomially with the size of the system, it increases inversely to the desired error bound $ε$. Making such simulations robust to decoherence using fault-tolerance constructs requires an additional factor of $1/ ε$ gates. These constraints are illustrated by using a three qubit nuclear magnetic resonance system to simulate a pairing Hamiltonian, following the algorithm proposed by Wu, Byrd, and Lidar.
description: 6 pages, 2 eps figures
"จฺบาบ่เผฺสงๆ": มิติหญิงชายในวรรณกรรมคำสอนเขมร
Creators: name: เยาวลักษณ์ อยู่เจริญสุข
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2015
Subjects: -

description: วรรณวิทัศน์, 15, พิเศษ, 77-121
Epidemic dynamics on complex networks
Creators: name: Zhou, Tao
name: Fu, Zhong-Qian
name: Wang, Bing-Hong
Publisher: name: arXiv
Year: 2005
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Recently, motivated by the pioneer works that reveal the small-world effect and scale-free property of various real-life networks, many scientists devote themselves into studying complex networks. One of the ultimate goals is to understand how the topological structures of networks affect the dynamics upon them. In this paper, we give a brief review on the studies of epidemic dynamics on complex networks, including the description of classical epidemic models, the epidemic spread on small-world and scale-free networks, and network immunization. Finally, a prospect is addressed and some interesting problems are listed.
description: 12 pages, no eps figures, a breif review
SmartCHP: Cogenerating a renewable future
Creators: name: Greenovate! Europe
Publisher: name: Zenodo
Year: 2023
Subjects: CHP
cogeneration
bioenergy

description: The present booklet introduces the main outcomes of the SmartCHP project which ran from June 2019 to November 2023. The project received fundingfrom European Union’s Horizon 2020 research and innovation programme, under Grant Agreement N° 815259. Further information about the projectcan be found via the project website and the EU research results portal Cordis.

The views expressed in this booklet are those of the consortium and cannot be attributed in any way to the European Commission. Written and editedby James Ling and Piero Valmassoi of Greenovate! Europe, with contributions from consortium partners. Graphic design by Formas do Possivel.

The document is published under Creative Commons licence AttributionNonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0).

© SmartCHP 2023
Estimating expectation values using approximate quantum states
Creators: name: Paini, Marco
name: Kalev, Amir
name: Padilha, Dan
name: Ruck, Brendan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We introduce an approximate description of an $N$-qubit state, which contains sufficient information to estimate the expectation value of any observable to a precision that is upper bounded by the ratio of a suitably-defined seminorm of the observable to the square root of the number of the system's identical preparations $M$, with no explicit dependence on $N$. We describe an operational procedure for constructing the approximate description of the state that requires, besides the quantum state preparation, only single-qubit rotations followed by single-qubit measurements. We show that following this procedure, the cardinality of the resulting description of the state grows as $3MN$. We test the proposed method on Rigetti's quantum processor unit with 12, 16 and 25 qubits for random states and random observables, and find an excellent agreement with the theory, despite experimental errors.
description: 8+5 pages; supersedes the general approximate state description section of arXiv:1910.10543 with improved presentation, new experiments and a discussion on related work; Version 2: minor edits; Version 3: Quantum journal version
The field theoretical formulation of general relativity and gravity with non-zero masses of gravitons
Creators: name: Petrov, A. N.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is a review paper. General relativity (GR) is presented in the field theoretical form, where gravitational field (metric perturbations) together with other physical fields are propagated in an auxiliary arbitrary curved background spacetime. Conserved currents are constructed and expressed through divergences of antisymmetrical tensor densities (superpotentials). This permits to connect local properties of perturbations with the quasi-local nature of the conserved quantities in GR. The problem of the non-localization of energy in GR is presented in exact mathematical expressions. A modification of GR developed recently by Babak and Grishchuk on the basis of the field formulation of GR is described. Their theory includes massive of spin-2 and spin-0 gravitons. All its local weak-field predictions are in agreement with experimental data. The exact equations of the massive theory eliminate the black hole event horizons and give an oscillator behavior for the homogeneous isotropic universe.
description: LaTeX, 18 pages, no figures. It is a translation with very minor changes of the invited paper to the Russian book referred below. A compressed version of the paper is in the 2-nd volume of the Proceedings to PIRT-IX, London: 3-6 September, 2004, p.p. 433-446
Over my dead body : the early Anglo-Saxon mortuary assimilation of previous cultural landscapes
Creators: name: Jacob, Jessie
Publisher: name: The Australian National University
Year: 2012
Subjects: subject: DA152.2.J33 2012
subject: Anglo-Saxons Funeral customs and rites England
subject: Anglo-Saxons Social life and customsEngland
subject: Funeral rites and ceremonies History To 1500England
subject: Great Britain History Anglo-Saxon period, 449-1066

description: The early Anglo-Saxons had a tendency to locate burials and cemeteries in association with Roman and prehistoric sites. In a time span nestled between the withdrawal of Roman troops from Britain and the complete conversion of the Anglo-Saxons to Christianity, this thesis analyses this practice in the English landscape, focusing on two study areas, the counties of Wiltshire and Kent. Using a geographical information system (GIS) and statistical analysis, the overarching theme for the early Anglo-Saxon re-use of earlier sites is divided into two parts: first, a review of the evidence suggests that previous mortuary sites were somehow suitable to be re-used as burial sites. Buildings may also have been seen as potential mortuary sites, particularly if the structure itself was in ruin. A type of ideology that revolved around death is in evidence. This thesis has found that the dead were considered to be powerful features in the landscape and showed their power within it, especially in terms of liminal places. The dead were also seen to have had an influence over the living and similarly, the living disposed of and arranged the corpse as to gain influence over the afterlife of that person. This finding contributes to the idea that ancestor worship formed a large part of Anglo-Saxon paganism. This leads into the second theme for the re{u00AD}use of sites, the idea that Anglo-Saxon burials can be correlated with boundaries and therefore had political connotations. A third major question that this research attempts to answer is if there were any differences in early Anglo-Saxon re-use between two regions in England; two 'local' areas defined in these regions; and local areas and their respective regions. This study showed that detailed regional analysis should not be rejected in favour of purely local ones. If possible, both should be used together to successfully tease out patterning in an area.
Resonant Shattering Flares as Multimessenger Probes of the Nuclear Symmetry Energy
Creators: name: Neill, Duncan
name: Newton, William G.
name: Tsang, David
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The behaviour of the nuclear symmetry energy near saturation density is important for our understanding of dense nuclear matter. This density dependence can be parameterised by the nuclear symmetry energy and its derivatives evaluated at nuclear saturation density. In this work we show that the core-crust interface mode of a neutron star is sensitive to these parameters, through the (density-weighted) shear-speed within the crust, which is in turn dependent on the symmetry energy profile of dense matter. We calculate the frequency at which the neutron star quadrupole ($\ell = 2$) crust-core interface mode must be driven by the tidal field of its binary partner to trigger a Resonant Shattering Flare (RSF). We demonstrate that coincident multimessenger timing of an RSF and gravitational wave chirp from a neutron star merger would enable us to place constraints on the symmetry energy parameters that are competitive with those from current nuclear experiments.
description: 15 pages, 19 figures, accepted in MNRAS
"จินดามณีฉบับกรมหลวงวงษาธิราชสนิท": การศึกษาในฐานะแบบเรียนสำหรับ "กุลบุตรผู้พากเพียร"
Creators: name: รังรอง เจียมวิจักษณ์
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2015
Subjects: -

description: วรรณวิทัศน์, 15, พิเศษ, 177-236
A paradigmatic model of Earth's magnetic field reversals
Creators: name: Stefani, F.
name: Gerbeth, G.
name: Guenther, U.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geophysics (physics.geo-ph)
subject: Astrophysics (astro-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The irregular polarity reversals of the Earth's magnetic field have attracted much interest during the last decades. Despite the fact that recent numerical simulations of the geodynamo have shown nice polarity transitions, the very reason and the basic mechanism of reversals are far from being understood. Using a paradigmatic mean-field dynamo model with a spherically symmetric helical turbulence parameter alpha we attribute the essential features of reversals to the magnetic field dynamics in the vicinity of an exceptional point of the spectrum of the non-selfadjoint dynamo operator. At such exceptional (branch) points of square root type two real eigenvalues coalesce and continue as a complex conjugated pair of eigenvalues. Special focus is laid on the comparison of numerically computed time series with paleomagnetic observations. It is shown that the considered dynamo model with high supercriticality can explain the observed time scale and the asymmetric shape of reversals with a slow decay and a fast field recovery.
description: 7 pages, 6 figures, submitted to Magnetohydrodynamics
Complexifying the spacetime algebra by means of an extra timelike dimension: Pin, Spin and algebraic spinors
Creators: name: Arcodía, Marcos R. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 15A66, 15A67

description: Because of the isomorphism ${C \kern -0.1em \ell}_{1,3}(\Bbb{C})\cong{C \kern -0.1em \ell}_{2,3}(\Bbb{R})$, it is possible to complexify the spacetime Clifford algebra ${C \kern -0.1em \ell}_{1,3}(\Bbb{R})$ by adding one additional timelike dimension to the Minkowski spacetime. In a recent work we showed how this treatment provide a particular interpretation of Dirac particles and antiparticles in terms of the new temporal dimension. In this article we thoroughly study the structure of the real Clifford algebra ${C \kern -0.1em \ell}_{2,3}(\Bbb{R})$ paying special attention to the isomorphism ${C \kern -0.1em \ell}_{1,3}(\Bbb{C})\cong{C \kern -0.1em \ell}_{2,3}(\Bbb{R})$ and the embedding ${C \kern -0.1em \ell}_{1,3}(\Bbb{R})\subseteq{C \kern -0.1em \ell}_{2,3}(\Bbb{R})$. On the first half of this article we analyze the Pin and Spin groups and construct an injective mapping $\operatorname{Pin}(1,3)\hookrightarrow\operatorname{Spin}(2,3)$, obtaining in particular elements in $\operatorname{Spin}(2,3)$ that represent parity and time reversal. On the second half of this paper we study the spinor space of the algebra and prove that the usual structure of complex spinors in ${C \kern -0.1em \ell}_{1,3}(\Bbb{C})$ is reproduced by the Clifford conjugation inner product for real spinors in ${C \kern -0.1em \ell}_{2,3}(\Bbb{R})$.
description: 28 pages, 3 figures
Asymptotic form of the density profile for Gaussian and Laguerre random matrix ensembles with orthogonal and symplectic symmetry
Creators: name: Forrester, P. J.
name: Frankel, N. E.
name: Garoni, T. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In a recent study we have obtained correction terms to the large N asymptotic expansions of the eigenvalue density for the Gaussian unitary and Laguerre unitary ensembles of random N by N matrices, both in the bulk and at the soft edge of the spectrum. In the present study these results are used to similarly analyze the eigenvalue density for Gaussian and Laguerre random matrix ensembles with orthogonal and symplectic symmetry. As in the case of unitary symmetry, a matching is exhibited between the asymptotic expansion of the bulk density, expanded about the edge, and the asymptotic expansion of the edge density, expanded into the bulk. In addition, aspects of the asymptotic expansion of the smoothed density, which involves delta functions at the endpoints of the support, are interpreted microscopically.
description: 28 pages, 1 figure