cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
the RefCo Toolkit
Creators: name: Aznar, Jocelyn
name: Seifart, Frank
Publisher: name: Zenodo
Year: 2022
Subjects: language documentation
certification
reusability
corpora
quality

description: The RefCo Toolkit is a toolkit for improving and evaluating the quality of oral language documentation. It provides quality criteria specifications as well as a process to be implemented by any certification entity interested in improving the quality of their language documentation corpora. The Corpus Documentation is a spreadsheet which should be filled by the corpus submitter, that is someone who either has created a corpus or is curating it and wishes to have it evaluated and improved according to the quality criteria defined by RefCo. A previous version, unpublished, of the Corpus Documentation was written by Kilu von Prince. Even if the current version evolved in a different direction, it benefited a lot from von Prince's work. The Reference Manual describes each item present in the Corpus Documentation. It is intended both for a corpus submitter when filling the Corpus Documentation. The Review List contains the list of the different items that should be checked by an entity implemented the RefCo quality criteria. These items can be evaluated either manually or automatically. Finally, the CheckList Report is the form a reviewer should fill after the evaluation of the corpus by the certification entity, in order to help the corpus submitter to fix the issues observed in the corpus, and keep track of the whole process.
title: Masculinités ‘noires’, renégociées Yambo Ouologuem au prisme de ses représentations d’ethnicité et de genre
Creators: name: Burnautzki, Sarah
Publisher: name: University Library Heidelberg
Year: 2014

description: HeLix - Dossiers zur romanischen Literaturwissenschaft, Bd. 6 (2013): HeLix, Beginn und Erscheinungsfrequenz: Jahr: 2009, Ausgaben pro Band: 1, Bände pro Jahr: 2
title: Guido Rings: La Conquista desbaratada. Identidad y alteridad en la novela, el cine y el teatro hispánicos contemporáneos, Frankfurt am Main/Madrid: Vervuert/Iberoamericana 2010
Creators: name: Temelli, Yasmin
Publisher: name: University Library Heidelberg
Year: 2014

description: .
description: HeLix - Dossiers zur romanischen Literaturwissenschaft, Bd. 6 (2013): HeLix, Beginn und Erscheinungsfrequenz: Jahr: 2009, Ausgaben pro Band: 1, Bände pro Jahr: 2
Community detection for correlation matrices
Creators: name: MacMahon, Mel
name: Garlaschelli, Diego
Publisher: name: arXiv
Year: 2013
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Physics and Society (physics.soc-ph)
subject: Portfolio Management (q-fin.PM)
subject: Risk Management (q-fin.RM)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: A challenging problem in the study of complex systems is that of resolving, without prior information, the emergent, mesoscopic organization determined by groups of units whose dynamical activity is more strongly correlated internally than with the rest of the system. The existing techniques to filter correlations are not explicitly oriented towards identifying such modules and can suffer from an unavoidable information loss. A promising alternative is that of employing community detection techniques developed in network theory. Unfortunately, this approach has focused predominantly on replacing network data with correlation matrices, a procedure that tends to be intrinsically biased due to its inconsistency with the null hypotheses underlying the existing algorithms. Here we introduce, via a consistent redefinition of null models based on random matrix theory, the appropriate correlation-based counterparts of the most popular community detection techniques. Our methods can filter out both unit-specific noise and system-wide dependencies, and the resulting communities are internally correlated and mutually anti-correlated. We also implement multiresolution and multifrequency approaches revealing hierarchically nested sub-communities with `hard' cores and `soft' peripheries. We apply our techniques to several financial time series and identify mesoscopic groups of stocks which are irreducible to a standard, sectorial taxonomy, detect `soft stocks' that alternate between communities, and discuss implications for portfolio optimization and risk management.
description: Final version, accepted for publication on PRX
Cryptanalyzing a RGB image encryption algorithm based on DNA encoding and chaos map
Creators: name: Liu, Yuansheng
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Recently, a RGB image encryption algorithm based on DNA encoding and chaos map has been proposed. It was reported that the encryption algorithm can be broken with four pairs of chosen plain-images and the corresponding cipher-images. This paper re-evaluates the security of the encryption algorithm, and finds that the encryption algorithm can be broken efficiently with only one known plain-image. The effectiveness of the proposed known-plaintext attack is supported by both rigorous theoretical analysis and experimental results. In addition, two other security defects are also reported.
The $τ_2$ model and parafermions
Creators: name: Baxter, R. J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Paul Fendley has recently found a "parafermionic" way to diagonalise a simple solvable hamiltonian associated with the chiral Potts model. Here we indicate how this method generalizes to the $τ_2$ model with open boundaries and make some comments.
description: 14 pages, 1 figure
Quantum effective force and Bohmian approach for time-dependent traps
Creators: name: Mousavi, S. V.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Trajectories of a Bohmian particle confined in time-dependent cylindrical and spherical traps are computed for both contracting and expanding boxes. Quantum effective force is considered in arbitrary directions. It is seen that in contrast to the problem of a particle in an infinite rectangular box with one wall in motion, if particle initially is in an energy eigenstate of a tiny box the force is zero in all directions. Trajectories of a two-body system confined in the spherical trap are also computed for different statistics. Computations show that there are situations for which distance between bosons is greater than the fermions. However, results of average separation of the particles confirm our expectation about the statistics.
From Statistical Evidence to Evidence of Causality
Creators: name: Dawid, Philip
name: Musio, Monica
name: Fienberg, Stephen E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistics Theory (math.ST)
subject: Methodology (stat.ME)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 62

description: While statisticians and quantitative social scientists typically study the "effects of causes" (EoC), Lawyers and the Courts are more concerned with understanding the "causes of effects" (CoE). EoC can be addressed using experimental design and statistical analysis, but it is less clear how to incorporate statistical or epidemiological evidence into CoE reasoning, as might be required for a case at Law. Some form of counterfactual reasoning, such as the "potential outcomes" approach championed by Rubin, appears unavoidable, but this typically yields "answers" that are sensitive to arbitrary and untestable assumptions. We must therefore recognise that a CoE question simply might not have a well-determined answer. It is nevertheless possible to use statistical data to set bounds within which any answer must lie. With less than perfect data these bounds will themselves be uncertain, leading to a compounding of different kinds of uncertainty. Still further care is required in the presence of possible confounding factors. In addition, even identifying the relevant "counterfactual contrast" may be a matter of Policy as much as of Science. Defining the question is as non-trivial a task as finding a route towards an answer. This paper develops some technical elaborations of these philosophical points, and illustrates them with an analysis of a case study in child protection. Keywords: benfluorex, causes of effects, counterfactual, child protection, effects of causes, Fre'chet bound, potential outcome, probability of causation
description: 27 pages, 1 table, 9 figures. This is a fairly substantial revision of version 1
Tensor renormalization of quantum many-body systems using projected entangled simplex states
Creators: name: Xie, Z. Y.
name: Chen, J.
name: Yu, J. F.
name: Kong, X.
name: Normand, B.
name: Xiang, T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a new class of tensor-network states, which we name projected entangled simplex states (PESS), for studying the ground-state properties of quantum lattice models. These states extend the pair-correlation basis of projected entangled pair states (PEPS) to a simplex. PESS are an exact representation of the simplex solid states and provide an efficient trial wave function that satisfies the area law of entanglement entropy. We introduce a simple update method for evaluating the PESS wave function based on imaginary-time evolution and the higher-order singular-value decomposition of tensors. By applying this method to the spin-1/2 antiferromagnetic Heisenberg model on the kagome lattice, we obtain accurate and systematic results for the ground-state energy, which approach the lowest upper bounds yet estimated for this quantity.
description: 12 pages, 8 figures
Pressure-induced quantum critical and multicritical points in a frustrated spin liquid
Creators: name: Thede, M.
name: Mannig, A.
name: Månsson, M.
name: Hüvonen, D.
name: Khasanov, R.
name: Morenzoni, E.
name: Zheludev, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The quantum spin liquid compound (C$_4$H$_{12}$N$_2$)Cu$_2$Cl$_6$ (PHCC) is studied by $μ$SR under hydrostatic pressures up to 23.6 kbar. At low temperatures, pressure-induced incommensurate magnetic order is detected beyond a quantum critical point at $P_c\sim4.3$ kbar. An additional phase transition to a different ordered phase is observed at $P_1\sim 13.4$ kbar. The data indicate that the high-pressure phase may be a commensurate one. The established $(P-T)$ phase diagram reveals the corresponding pressure-induced multicritical point at $P_1$, $T_1=2.0$ K.
Organizing the State of Practice on Technical Debt Prevention, Monitoring, and Payment in Software Projects
Creators: name: Freire, Sávio
name: Mendonça, Manoel
name: Spínola, Rodrigo
Publisher: name: Zenodo
Year: 2022

description: Context: Technical debt (TD) prevention, monitoring, and payment activities allow software teams to prevent potential TD items, follow their evolution, and eliminate them, respectively. Knowing the state of practice of these activities can help development teams to choose the best practice to be used in their projects and understand which aspects need to be improved to enable TD management. Aims: To investigate and organize the state of practice on the prevention, monitoring, and payment of TD items in software projects. Method: We conduct a literature review on these activities and analyze data collected during the InsighTD Project. It is a globally distributed family of industrial surveys on TD. We organize the body of knowledge in conceptual maps and IDEA (Impediments, Decision factors, Enabling practices, and Actions) diagrams and assess them through case studies. Results: We identify a set of practices used to prevent, monitor, and pay TD items and a set of practice avoidance reasons (PARs) that justify the non-application of these practices. We organize practices and PARs along with their types, natures, and categories into maps and IDEA diagrams. From the assessment of those artifacts, we found out that they can support TD prevention, monitoring, and payment activities. Conclusion: As a benchmark, maps can reveal new practices that teams can use in their projects, while IDEA diagrams can assist teams in increasing their ability to manage TD items in their projects.
The Jacobian Conjecture, together with Specht and Burnside-type problems
Creators: name: Belov, Alexei
name: Bokut, Leonid
name: Rowen, Louis
name: Yu, Jie-Tai
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14R15

description: We explore an (unpublished) approach to the famous Jacobian Conjecture by means of identities of algebras, discovered by the brilliant deceased mathematician, Alexander Vladimirovich Yagzhev (1951{2001). This approach also indicates some very close connections between mathematical physics, universal algebra and automorphisms of polynomial algebras
description: 48 pages
Study of diphoton decays of the lightest scalar Higgs boson in the Next-to-Minimal Supersymmetric Standard Model
Creators: name: Jia-Wei, Fan
name: Jun-Quan, Tao
name: Yu-Qiao, Shen
name: Guo-Ming, Chen
name: He-Sheng, Chen
name: Gascon-Shotkin, S.
name: Lethuillier, M.
name: Sgandurra, L.
name: Soulet, P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The CMS and ATLAS experiments at the LHC have announced the discovery of a Higgs boson with mass at approximately 125 $GeV/c^{2}$ in the search for the Standard Model Higgs boson via notably the $γγ$ and $ZZ$ to four leptons final states. Considering the recent results on the Higgs boson searches from the LHC, we study the lightest scalar Higgs boson $h_{1}$ in the Next-to-Minimal Supersymmetric Standard Model by restricting the next-to-lightest scalar Higgs boson $h_{2}$ to be the observed 125 $GeV/c^{2}$ state. We perform a scan over the relevant NMSSM parameter space that is favoured by low fine-tuning considerations. Moreover, we also take the experimental constraints from direct searches, $B$-physics observables, relic density and anomalous magnetic moment of the muon measurements as well as the theoretical considerations into account in our specific scan. We find that the signal rate in the two-photon final state for the NMSSM Higgs boson $h_{1}$ with the mass range from approximately 80 $GeV/c^{2}$ to 122 $GeV/c^{2}$ can be enhanced by a factor up to 3.5, when the Higgs boson $h_{2}$ is required to be compatible with the excess from latest LHC results. This motivates the extension of the search at the LHC for the Higgs boson $h_{1}$ in the diphoton final state down to masses of 80 $GeV/c^{2}$ or lower, in particular with the upcoming proton-proton collision data to be taken at center-of-mass energies of 13-14 $TeV$.
description: In addition to increasing scan statistics, for this version, after discussion with theorists, we used modified parameter ranges especially a relaxed range for lambda (0.60-0.75) and relaxed HiggsSignals constraints (~2 sigmas)
CP and CPT Violating Parameters Determined from the Joint Decays of $C=+1$ Entangled Neutral Pseudoscalar Mesons
Creators: name: Huang, Zhijie
name: Shi, Yu
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Entangled pseudoscalar neutral meson pairs have been used in studying CP violation and searching CPT violation, but almost all the previous works concern $C=-1$ entangled state. Here we consider $C=+1$ entangled state of pseudoscalar neutral mesons, which is quite different from $C=-1$ entangled state and provides complementary information on symmetry violating parameters. After developing a general formalism, we consider three kinds of decay processes, namely, semileptonic-semileptonic, hadronic-hadronic and semileptonic-hadronic processes. For each kind of processes, we calculate the integrated rates of joint decays with a fixed time interval, as well as asymmetries defined for these joint rates of different channels. In turn, these asymmetries can be used to determine the four real numbers of the two indirect symmetry violating parameters, based on a general relation between the symmetry violating parameters and the decay asymmetries presented here. Various discussions are made on indirect and direct violations and the violation of $Δ{\cal F} =ΔQ$ rule, with some results presented as theorems.
description: 22 pages, to appear in PRD
Screening effect on the optical absorption in graphene and metallic monolayers
Creators: name: Jablan, Marinko
name: Soljacic, Marin
name: Buljan, Hrvoje
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Screening is one of the fundamental concepts in solid state physics. It has a great impact on the electronic properties of graphene where huge mobilities were observed in spite of the large concentration of charged impurities. While static screening has successfully explained DC mobilities, screening properties can be significantly changed at infrared or optical frequencies. In this paper we discuss the influence of dynamical screening on the optical absorption of graphene and other 2D electron systems like metallic monolayers. This research is motivated by recent experimental results which pointed out that graphene plasmon linewidths and optical scattering rates can be much larger than scattering rates determined by DC mobilities. Specifically we discuss a process where a photon incident on a graphene plane can excite a plasmon by scattering from an impurity, or surface optical phonon of the substrate.
description: 19 pages, 2 figures
Applying the effective-source approach to frequency-domain self-force calculations
Creators: name: Warburton, Niels
name: Wardell, Barry
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The equations of motion of a point particle interacting with its own field are defined in terms of a certain regularized self-field. Two of the leading methods for computing this regularized field are the mode-sum and effective-source approaches. In this work we unite these two distinct regularization schemes by generalizing traditional frequency-domain mode-sum calculations to incorporate effective-source techniques. For a toy scalar-field model we analytically compute an appropriate puncture field from which the regularized residual field can be calculated. To demonstrate the method, we compute the self-force for a scalar particle on a circular orbit in Schwarzschild spacetime. We also demonstrate the relation between the worldtube and window function approaches to localizing the puncture field to the neighborhood of the worldline and show how the method reduces to the well-known mode-sum regularization scheme in a certain limit. This new computational scheme can be applied to cases where traditional mode-sum regularization is inadequate, such as in calculations at second perturbative order.
description: 13 pages, 1 figure. Correct minor typo and update references
Is Interstellar travel to an exoplanet Possible?
Creators: name: Singal, Tanmay
name: Singal, Ashok K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences

description: It is shown that space travel, even in the most distant future, will remain confined to our own planetary system, and a similar conclusion will hold forth for any other civilization, no matter how advanced it might be, unless those extra-terrestrial species have life spans order of magnitude longer than ours. Even in such a case it is unlikely that they will travel much farther than their immediate stellar neighbourhood, as each such excursion will exhaust the resources of their home planet so much that those will dwindle rather fast and there might not be much left for the further scientific and technological advancements. So the science-fiction fancy of a "Galactic Empire" may ever remain in our fantasies only. And as for the mythical UFOs, whose quiet appearances do get reported in the press once in a while, recent explorations have shown no evidence that any such thing could have an origination within our own solar system itself. And a "quiet trip" back and forth from a distant star is almost impossible as the exhaust in any such trip will dazzle the sky like another sun or perhaps more like a gamma ray burst occurring but not in a distant part of the universe instead going off right in our own solar backyard.
description: 18 pages, 2 figures, 2 tables
Polarized hadron pair production from electron-positron annihilation
Creators: name: Pitonyak, D.
name: Schlegel, M.
name: Metz, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study the production of two almost back-to-back hadrons from the annihilation of an electron and a positron, allowing for the polarization of all particles involved. In particular, we conduct a general (model-independent) structure function decomposition of the cross section for the case $e^+e^- \to γ^* \to h_ah_bX$. Moreover, using the parton model we calculate the relevant structure functions in terms of twist-2 transverse momentum dependent (TMD) fragmentation functions (FFs). We also give results for the situation $e^+e^- \to Z^* \to h_ah_bX$ (including $γ$-$Z$ interference) within this model. This is the first time a complete framework has been presented for the examination of TMD FFs within $e^+e^-\to h_ah_bX$. We also specify certain parts of our analysis that hold for the triple-polarized semi-inclusive deep-inelastic scattering process and for di-hadron fragmentation. Furthermore, we give an explicit prescription of how our work can be translated to the Drell-Yan reaction, which provides for the first time full results for double-polarized Drell-Yan that include electroweak effects. We further discuss the relevance of our $e^+e^-\to h_ah_bX$ results for future experiments at $e^+e^-$ machines.
description: 29 pages, 5 figures, Version to appear in Phys. Rev. D
Role of viscous friction in the reverse rotation of a disk
Creators: name: de Castro, Pablo
name: Parisio, Fernando
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The mechanical response of a circularly-driven disk in a dissipative medium is considered. We focus on the role played by viscous friction in the spinning motion of the disk, especially on the effect called reverse rotation, where the intrinsic and orbital rotations are antiparallel. Contrary to what happens in the frictionless case, where steady reverse rotations are possible, we find that this dynamical behavior may exist only as a transient when dissipation is considered. Whether or not reverse rotations in fact occur depend on the initial conditions and on two parameters, one related to dragging, inertia, and driving, the other associated with the geometric configuration of the system. The critical value of this geometric parameter (separating the regions where reverse rotation is possible from those where it is forbidden) as a function of viscosity is well adjusted by a q-exponential function.
description: 7 pages, 8 captioned figures
Perovskite quantum dot-induced monochromatization for broadband photodetection of wafer-scale molybdenum disulfide
Creators: name: Kim, M
name: Bae, G
name: Kim, KN
name: Jo, HK
name: Song, DS
name: Ji, S
name: Jeon, D
name: Ko, S
name: Lee, SJ
name: Choi, S
name: Yim, S
name: Song, W
name: Myung, S
name: Yoon, DH
name: An, KS
name: Lee, SS
Publisher: name: Apollo - University of Cambridge Repository
Year: 2022
Subjects: Article
/639/925/357/1018
/639/301/1005/1009
/128
/140/133
/140/146
/145
article

description: AbstractTwo-dimensional transition metal dichalcogenide (2D TMD) crystals are versatile platforms for realizing emergent optoelectronic devices. However, the ability to produce large-area 2D TMDs with spatial homogeneity and to accomplish broadband photodetection by tuning the operating wavelengths in photodetectors are two paramount prerequisites for practical applications of 2D TMD-based photodetectors. Here, we demonstrated all-solution-processed broadband photodetectors based on the wafer-scale perovskite quantum dots (PQDs)/MoS2 through light management via the monochromatization effect of the PQDs. The photodetectors exhibited broadband photodetection behavior that retained high photocurrents over a wide spectral range (254, 365, and 532 nm) by enhancing the photoresponse in the UV region through light management via the monochromatization effect of the PQDs. This intriguing strategy was proven with (i) electrical isolation realized by inserting an Al2O3 insulator between the PQDs and MoS2 and (ii) alteration of the PQD density. The rational nanohybrid-based photodetectors also exhibited superb air stability and exceptional bending durability.
The supernova CSS121015:004244+132827: a clue for understanding super-luminous supernovae
Creators: name: Benetti, S.
name: Nicholl, M.
name: Cappellaro, E.
name: Pastorello, A.
name: Smartt, S. J.
name: Elias-Rosa, N.
name: Drake, A. J.
name: Tomasella, L.
name: Turatto, M.
name: Harutyunyan, A.
name: Taubenberger, S.
name: Hachinger, S.
name: Morales-Garoffolo, A.
name: Chen, T. -W.
name: Djorgovski, S. G.
name: Fraser, M.
name: Gal-Yam, A.
name: Inserra, C.
name: Mazzali, P.
name: Pumo, M. L.
name: Sollerman, J.
name: Valenti, S.
name: Young, D. R.
name: Dennefeld, M.
name: Guillou, L. Le
name: Fleury, M.
name: Leget, P. -F.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present optical photometry and spectra of the super luminous type II/IIn supernova CSS121015:004244+132827 (z=0.2868) spanning epochs from -30 days (rest frame) to more than 200 days after maximum. CSS121015 is one of the more luminous supernova ever found and one of the best observed. The photometric evolution is characterized by a relatively fast rise to maximum (~40 days in the SN rest frame), and by a linear post-maximum decline. The light curve shows no sign of a break to an exponential tail. A broad Halpha is first detected at ~ +40 days (rest-frame). Narrow, barely-resolved Balmer and [O III] 5007 A lines, with decreasing strength, are visible along the entire spectral evolution. The spectra are very similar to other super luminous supernovae (SLSNe) with hydrogen in their spectrum, and also to SN 2005gj, sometimes considered a type Ia interacting with H-rich CSM. The spectra are also similar to a subsample of H-deficient SLSNe. We propose that the properties of CSS121015 are consistent with the interaction of the ejecta with a massive, extended, opaque shell, lost by the progenitor decades before the final explosion, although a magnetar powered model cannot be excluded. Based on the similarity of CSS121015 with other SLSNe (with and without H), we suggest that the shocked-shell scenario should be seriously considered as a plausible model for both types of SLSN.
description: 17 pages, 10 figures and 5 tables. In press to MNRAS. This version matches the accepted one. Main conclusions are unchanged
CESSDA Data Management Expert Guide [Webinar]: Why and how to use it
Creators: name: Braukmann, Ricarda
name: Miranda, Patrícia
name: Seang, Sothearath
name: Willems, Marieke
name: Parker, Stephanie
name: Vipavc Brvar, Irena
Publisher: name: Zenodo
Year: 2020
Subjects: Data Management
DMP
CESSDA
DMEG
Research Data Management
Data Management Expert Guide
Open Science

description: Following is the presentation from the webinar on the CESSDA Data Management Expert Guide where a researcher, a trainer and an expert were discussing why and how to use the guide for research data management in the social sciences and beyond. The webinar brought multiple perspectives spanning research and data collection, training opportunities and pointers on how to make your own data management plan, added value for Early Career Researchers and Open Science approaches. Designed by European experts to help social science researchers make their data Findable, Accessible, Interoperable and Reusable (FAIR), the guide also supports interdisciplinary research to help tackle global challenges. Recording of the webinar is available on CESSDA's YouTube channel.
$νΛ$CDM: Neutrinos help reconcile Planck with the Local Universe
Creators: name: Wyman, Mark
name: Rudd, Douglas H.
name: Vanderveld, R. Ali
name: Hu, Wayne
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Current measurements of the low and high redshift Universe are in tension if we restrict ourselves to the standard six parameter model of flat $Λ$CDM. This tension has two parts. First, the Planck satellite data suggest a higher normalization of matter perturbations than local measurements of galaxy clusters. Second, the expansion rate of the Universe today, $H_0$, derived from local distance-redshift measurements is significantly higher than that inferred using the acoustic scale in galaxy surveys and the Planck data as a standard ruler. The addition of a sterile neutrino species changes the acoustic scale and brings the two into agreement; meanwhile, adding mass to the active neutrinos or to a sterile neutrino can suppress the growth of structure, bringing the cluster data into better concordance as well. For our fiducial dataset combination, with statistical errors for clusters, a model with a massive sterile neutrino shows 3.5$σ$ evidence for a non-zero mass and an even stronger rejection of the minimal model. A model with massive active neutrinos and a massless sterile neutrino is similarly preferred. An eV-scale sterile neutrino mass -- of interest for short baseline and reactor anomalies -- is well within the allowed range. We caution that 1) unknown astrophysical systematic errors in any of the data sets could weaken this conclusion, but they would need to be several times the known errors to eliminate the tensions entirely; 2) the results we find are at some variance with analyses that do not include cluster measurements; and 3) some tension remains among the datasets even when new neutrino physics is included.
description: 5 pages, 2 figures. v2: some clarifications, version accepted in Physical Review Letters
Hunting the Parent of the Orphan Stream II: The First High-Resolution Spectroscopic Study
Creators: name: Casey, Andrew
name: Keller, Stefan
name: Da Costa, Gary
name: Frebel, Anna
name: Maunder, Elizabeth
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the first high-resolution spectroscopic study on the Orphan Stream for five stream candidates, observed with the Magellan Inamori Kyocera Echelle (MIKE) spectrograph on the Magellan Clay telescope. The targets were selected from the low-resolution catalog of Casey et al (2013a): 3 high-probability members, 1 medium and 1 low-probability stream candidate were observed. Our analysis indicates the low and medium-probability target are metal-rich field stars. The remaining three high-probability targets range over $\sim$1 dex in metallicity, and are chemically distinct compared to the other 2 targets and all standard stars: low [$α$/Fe] abundance ratios are observed, and lower limits are ascertained for [Ba/Y], which sit well above the Milky Way trend. These chemical signatures demonstrate that the undiscovered parent system is unequivocally a dwarf spheroidal galaxy, consistent with dynamical constraints inferred from the stream width and arc. As such, we firmly exclude the proposed association between NGC 2419 and the Orphan stream. A wide range in metallicities adds to the similarities between the Orphan stream and Segue 1, although low [$α$/Fe] abundance ratios in the Orphan stream are in tension with high [$α$/Fe] values observed in Segue 1. Open questions remain before Segue 1 could possibly be claimed as the `parent' of the Orphan stream. The parent system could well remain undiscovered in the southern sky.
description: 14 pages, 3 figures. Journal version
Brazil and Angola: From the decolonisation war to independence (1961-1975)
Creators: name: de Oliveira Rosa, Icaro
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: The purpose of this thesis is to investigate how Brazil dealt with the decolonisation war in Angola (1961-1974) and examine the reasons for Brazil’s decision to recognise Angola’s independence in 1975. This thesis uses international history’s method and relies on primary and secondary sources to investigate its subjects. This thesis is composed of four main chapters, each of them dealing with different aspects of the research. Chapter 1 comprises a literature review and it is subdivided into three parts. Part 1 describes the objectives and the existing literature regarding this period. Part 2 explains the international history’s method, its evolution and definitions. Part 3 deals with the research structure and explains how the international history’s method is employed. Chapter 2 examines Jânio Quadros (1961-1961) and João Goulart’s (1961-1964) foreign policy and is also subdivided into three parts. Part 1 briefly describes the historical evolution of Angola’s and Brazil’s relationship until the 1960s. Part 2 deals with the definition of the Independent Foreign Policy, and how Brazil dealt with the African and decolonisation strategy. Part 3 addresses the country’s stance during this period. Chapter 3 focusses on the period from the military coup in March 1964 until the end of Costa e Silva’s government in 1969. It is subdivided into two main parts. Part 1 concentrates on the country’s shift from an ambiguous stance to the backing of Portugal. Part 2 addresses Costa e Silva’s presidency and the maintenance of the country’s support to Lisbon. Lastly, Chapter 4 concentrates on the period from 1969 until November 1975. It is also subdivided into two main parts. Part 1 cover Médici’s presidency and Brazil’s tacit support to Portugal. Part 2 concentrates on Geisel’s presidency and the shift of the country’s stance. The results of these analyses reveal that from 1961 to 1964 Brazil took an ambiguous position towards Angolan decolonisation, and from 1964 until the last months of 1974 it supported Portugal’s claims over Angola. Ultimately, the research shows that because of strategic and economic interests, together with the political pressure from Africans and Arabs, that Brazil was pushed to support Angolan decolonisation and independence in November 1975.
A lower bound for disconnection by random interlacements
Creators: name: Li, Xinyi
name: Sznitman, Alain-Sol
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60F10, 60K35, 60J27

description: We consider the vacant set of random interlacements on Z^d, with d bigger or equal to 3, in the percolative regime. Motivated by the large deviation principles obtained in our recent work arXiv:1304.7477, we investigate the asymptotic behavior of the probability that a large body gets disconnected from infinity by the random interlacements. We derive an asymptotic lower bound, which brings into play tilted interlacements, and relates the problem to some of the large deviations of the occupation-time profile considered in arXiv:1304.7477.
description: 28 pages, appeared in the Electronic Journal of Probability
Randomization does not help much, comparability does
Creators: name: Saint-Mont, Uwe
Publisher: name: arXiv
Year: 2013
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences
subject: 62K99

description: Following Fisher, it is widely believed that randomization "relieves the experimenter from the anxiety of considering innumerable causes by which the data may be disturbed." In particular, it is said to control for known and unknown nuisance factors that may considerably challenge the validity of a result. Looking for quantitative advice, we study a number of straightforward, mathematically simple models. However, they all demonstrate that the optimism with respect to randomization is wishful thinking rather than based on fact. In small to medium-sized samples, random allocation of units to treatments typically yields a considerable imbalance between the groups, i.e., confounding due to randomization is the rule rather than the exception. In the second part of this contribution, we extend the reasoning to a number of traditional arguments for and against randomization. This discussion is rather non-technical, and at times even "foundational" (Frequentist vs. Bayesian). However, its result turns out to be quite similar. While randomization's contribution remains questionable, comparability contributes much to a compelling conclusion. Summing up, classical experimentation based on sound background theory and the systematic construction of exchangeable groups seems to be advisable.
The statistical nature of the brightest group galaxies
Creators: name: Shen, Shiyin
name: Yang, Xiaohu
name: Mo, Houjun
name: Bosch, Frank van den
name: More, Surhud
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We examine the statistical properties of the brightest group galaxies (BGGs) using a complete spectroscopic sample of groups/clusters of galaxies selected from the Data Release 7 of the Sloan Digital Sky Survey. We test whether BGGs and other bright members of groups are consistent with an ordered population among the total population of group galaxies. We find that the luminosity distributions of BGGs do not follow the predictions from the order statistics (OS). The average luminosities of BGGs are systematically brighter than OS predictions. On the other hand, by properly taking into account the brightening effect of the BGGs, the luminosity distributions of the second brightest galaxies are in excellent agreement with the expectations of OS. The brightening of BGGs relative to the OS expectation is consistent with a scenario that the BGGs on average have over-grown about 20 percent masses relative to the other member galaxies. The growth ($ΔM$) is not stochastic but correlated with the magnitude gap ($G_{1,2}$) between the brightest and the second brightest galaxy. The growth ($ΔM$) is larger for the groups having more prominent BGGs (larger $G_{1,2}$) and averagely contributes about 30 percent of the final $G_{1,2}$ of the groups of galaxies.
description: ApJ accepted, replaced with the accepted version
The Aquarius Co-Moving Group is Not a Disrupted Classical Globular Cluster
Creators: name: Casey, Andrew R.
name: Keller, Stefan
name: Alves-Brito, Alan
name: Frebel, Anna
name: Da Costa, Gary
name: Karakas, Amanda
name: Yong, David
name: Schlaufman, Kevin
name: Jacobson, Heather R.
name: Yu, Qinsi
name: Fishlock, Cherie
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a detailed analysis of high-resolution, high S/N spectra for 5 Aquarius stream stars observed with the MIKE spectrograph on the Magellan Clay telescope. Our sample represents one third of the 15 known members in the stream. We find the stream is not mono-metallic: the metallicity ranges from [Fe/H] = -0.63 to -1.58. No anti-correlation in Na-O abundances is present, and we find a strong positive Mg-Al relationship, similar to that observed in the thick disk. We find no evidence that the stream is a result of a disrupted classical globular cluster, contrary to a previously published claim. High [(Na, Ni, alpha)/Fe] and low [Ba/Y] abundance ratios in the stream suggests it is not a tidal tail from a disrupted dwarf galaxy, either. The stream is chemically indistinguishable from Milky Way field stars with the exception of one candidate, C222531-145437. From its position, velocity, and detailed chemical abundances, C222531-145437 is likely a star that was tidally disrupted from omega-Centauri. We propose the Aquarius stream is Galactic in origin, and could be the result from a disk-satellite perturbation in the Milky Way thick disk on the order of a few Gyr ago: derived orbits, UVW velocities, and angular momenta of the Aquarius members offer qualitative support for our hypothesis. Assuming C222531-145437 is a tidally disrupted member of omega-Centauri, this system is the most likely disk perturber. In the absence of compelling chemical and/or dynamical evidence that the Aquarius stream is the tidal tail of a disrupted satellite, we advocate the "Aquarius group" as a more appropriate description. Like the Canis Major over-density, as well as the Hercules and Monoceros groups, the Aquarius group joins the list of kinematically-identified substructures that are not actually accreted material: they are simply part of the rich complexity of the Milky Way structure.
description: Accepted to MNRAS. Updated to journal version
Theory of magnetic oscillations in Weyl semimetals
Creators: name: Ashby, Phillip E. C.
name: Carbotte, J. P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Weyl semimetals are a new class of Dirac material that posses bulk energy nodes in three dimensions. In this paper, we study a Weyl semimetal subject to an applied magnetic field. We derive expressions for the density of states, electronic specific heat, and the quantum oscillations of the magnetization, DC conductivity, and thermal conductivity. We find phase shifts in the quantum oscillations that distinguish the Weyl semimetal from conventional three dimensional Schrödinger Fermions.
description: 11 pages, 5 figures
title: Nachruf auf Dr. Dietrich Lutz
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 28, Nr. 2 (1999), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Strong maximum principle for Schrödinger operators with singular potential
Creators: name: Orsina, Luigi
name: Ponce, Augusto C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary: 35B05, 35B50, Secondary: 31B15, 31B35

description: We prove that for every $p > 1$ and for every potential $V \in L^p$, any nonnegative function satisfying $-Δu + V u \ge 0$ in an open connected set of $\mathbb{R}^N$ is either identically zero or its level set $\{u = 0\}$ has zero $W^{2, p}$ capacity. This gives an affirmative answer to an open problem of Bénilan and Brezis concerning a bridge between Serrin-Stampacchia's strong maximum principle for $p > \frac{N}{2}$ and Ancona's strong maximum principle for $p = 1$. The proof is based on the construction of suitable test functions depending on the level set $\{u = 0\}$ and on the existence of solutions of the Dirichlet problem for the Schrödinger operator with diffuse measure data.
description: 21 pages
title: Hohenlohe als Residenzlandschaft. Städtebau und Landschaftsgestaltung im 18. Jahrhundert
Creators: name: Eidloth, Volkmar
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 30, Nr. 3 (2001), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Development of Estimation Scheme for Soft Robotics System
Creators: name: LOO, JUNN YONG
Publisher: name: Monash University
Year: 2022
Subjects: Deep learning
Control engineering, mechatronics and robotics not elsewhere classified

description: Sensory data plays a significant role in perception and control of soft robots which provides the basis of informed decision-making. However, inherent softness in soft robots challenges the conventional ways of integrating sensors on them as soft robots have infinite degrees of freedom. An alternative approach is to obtain these sensory data through indirect sensing, which is to employ a filtering scheme that uses the robot’s dynamics and available sensor measurements to estimate variables that would have been measured by physical sensors. In this thesis, several modelling and estimation schemes are developed for multiple soft robot platforms.
title: 50 Jahre Denkmalpflege in Baden-Württemberg. Bau- und Kunstdenkmalpflege
Creators: name: Clostermann, Gertrud
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 32, Nr. 1 (2003), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Error suppression and error correction in adiabatic quantum computation II: non-equilibrium dynamics
Creators: name: Sarovar, Mohan
name: Young, Kevin C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: While adiabatic quantum computing (AQC) has some robustness to noise and decoherence it is widely believed that encoding, error suppression and error correction will be required to scale AQC to large problem sizes. Previous works have established at least two different techniques for error suppression in AQC. In this paper we derive a model for describing the dynamics of encoded AQC and show that previous constructions for error suppression can be unified with this dynamical model. In addition the model clarifies the mechanisms of error suppression and allow identification of its weaknesses. In the second half of the paper we utilize our description of non-equilibrium dynamics in encoded AQC to construct methods for error correction in AQC by cooling local degrees of freedom (qubits). While this is shown to be possible in principle, we also identify the key challenge to this approach: the requirement of high-weight Hamiltonians. Finally, we use our dynamical model to perform a simplified thermal stability analysis of concatenated-stabilizer-code encoded many-body systems for AQC or quantum memories. This work is a companion paper to "\textit{Error suppression and error correction in adiabatic quantum computation I: techniques and challenges}" (Phys. Rev. X, 3, 041013 (2013)), which provides a quantum information perspective on the techniques and limitations of error suppression and correction in AQC. In this paper we couch the same results within a dynamical framework, which allows for detailed analysis of the non-equilibrium dynamics of error suppression and correction in encoded AQC.
description: 40 pages, 8 figures. Companion paper to "Error suppression and error correction in adiabatic quantum computation I: techniques and challenges". Changes in version 4: updated references. Published version
title: 50 Jahre Denkmalpflege in Baden-Württemberg. Archäologische Denkmalpflege
Creators: name: Biel, Jörg
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 32, Nr. 1 (2003), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4