cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fabrication of surface-patterned ZnO thin films using sol-gel methods and nanoimprint lithography
Creators: name: Dai, Shuxi
name: Wang, Yang
name: Zhang, Dianbo
name: Han, Xiao
name: Shi, Qing
name: Wang, Shujie
name: Du, Zuliang
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Surface-patterned ZnO thin films were fabricated by direct imprinting on ZnO sol and subsequent annealing process. The polymer-based ZnO sols were deposited on various substrates for the nanoimprint lithography and converted to surface-patterned ZnO gel films during the thermal curing nanoimprint process. Finally, crystalline ZnO films were obtained by subsequent annealing of the patterned ZnO gel films. The optical characterization indicates that the surface patterning of ZnO thin films can lead to an enhanced transmittance. Large-scale ZnO thin films with different patterns can be fabricated by various easy-made ordered templates using this combination of sol-gel and nanoimprint lithography techniques.
description: 17 pages, 5 figures; Published in Journal of Sol-Gel Science and Technology, 2011
Constellations of co-orbital planets: horseshoe dynamics, long-term stability, transit timing variations, and potential as SETI beacons
Creators: name: Raymond, Sean N.
name: Veras, Dimitri
name: Clement, Matthew S.
name: Izidoro, Andre
name: Kipping, David
name: Meadows, Victoria
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Co-orbital systems contain two or more bodies sharing the same orbit around a planet or star. The best-known flavors of co-orbital systems are tadpoles (in which two bodies' angular separations oscillate about the L4/L5 Lagrange points $60^\circ$ apart) and horseshoes (with two bodies periodically exchanging orbital energy to trace out a horseshoe shape in a co-rotating frame). Here, we use N-body simulations to explore the parameter space of many-planet horseshoe systems. We show that up to 24 equal-mass, Earth-mass planets can share the same orbit at 1 au, following a complex pattern in which neighboring planets undergo horseshoe oscillations. We explore the dynamics of horseshoe constellations, and show that they can remain stable for billions of years and even persist through their stars' post-main sequence evolution. With sufficient observations, they can be identified through their large-amplitude, correlated transit timing variations. Given their longevity and exotic orbital architectures, horseshoe constellations may represent potential SETI beacons.
description: 10 pages, 10 figures. Published in MNRAS. YouTube playlist with animations of horseshoe constellation systems here: https://www.youtube.com/playlist?list=PLelMZVM3ka3F335LGLxkxrD1ieiLJYQ5N . Blog post here: https://planetplanet.net/2023/04/20/constellations-of-co-orbital-planets/
Prospects of BRICS currency dominance in international trade
Creators: name: Coquidé, Célestin
name: Lages, José
name: Shepelyansky, Dima L.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Trading and Market Microstructure (q-fin.TR)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Economics and business
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: During his state visit to China in April 2023, Brazilian President Lula proposed the creation of a trade currency supported by the BRICS countries. Using the United Nations Comtrade database, providing the frame of the world trade network associated to 194 UN countries during the decade 2010 - 2020, we study a mathematical model of influence battle of three currencies, namely, the US dollar, the euro, and such a hypothetical BRICS currency. In this model, a country trade preference for one of the three currencies is determined by a multiplicative factor based on trade flows between countries and their relative weights in the global international trade. The three currency seed groups are formed by 9 eurozone countries for the euro, 5 Anglo-Saxon countries for the US dollar and the 5 BRICS countries for the new proposed currency. The countries belonging to these 3 currency seed groups trade only with their own associated currency whereas the other countries choose their preferred trade currency as a function of the trade relations with their commercial partners. The trade currency preferences of countries are determined on the basis of a Monte Carlo modeling of Ising type interactions in magnetic spin systems commonly used to model opinion formation in social networks. We adapt here these models to the world trade network analysis. The results obtained from our mathematical modeling of the structure of the global trade network show that as early as 2012 about 58 percent of countries would have preferred to trade with the BRICS currency, 23 percent with the euro and 19 percent with the US dollar. Our results announce favorable prospects for a dominance of the BRICS currency in international trade, if only trade relations are taken into account, whereas political and other aspects are neglected.
description: 18 pages, 3 figures. Appendix: 4 figures and 3 tables
A simple microstructure return model explaining microstructure noise and Epps effects
Creators: name: Saichev, A.
name: Sornette, D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Trading and Market Microstructure (q-fin.TR)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Economics and business

description: We present a simple microstructure model of financial returns that combines (i) the well-known ARFIMA process applied to tick-by-tick returns, (ii) the bid-ask bounce effect, (iii) the fat tail structure of the distribution of returns and (iv) the non-Poissonian statistics of inter-trade intervals. This model allows us to explain both qualitatively and quantitatively important stylized facts observed in the statistics of microstructure returns, including the short-ranged correlation of returns, the long-ranged correlations of absolute returns, the microstructure noise and Epps effects. According to the microstructure noise effect, volatility is a decreasing function of the time scale used to estimate it. Paradoxically, the Epps effect states that cross correlations between asset returns are increasing functions of the time scale at which the returns are estimated. The microstructure noise is explained as the result of the negative return correlations inherent in the definition of the bid-ask bounce component (ii). In the presence of a genuine correlation between the returns of two assets, the Epps effect is due to an average statistical overlap of the momentum of the returns of the two assets defined over a finite time scale in the presence of the long memory process (i).
description: 31 pages + 19 figures
Localization for Linearly Edge Reinforced Random Walks
Creators: name: Angel, Omer
name: Crawford, Nicholas
name: Kozma, Gady
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60K35, 60K37, 60G50

description: We prove that the linearly edge reinforced random walk (LRRW) on any graph with bounded degrees is recurrent for sufficiently small initial weights. In contrast, we show that for non-amenable graphs the LRRW is transient for sufficiently large initial weights, thereby establishing a phase transition for the LRRW on non-amenable graphs. While we rely on the description of the LRRW as a mixture of Markov chains, the proof does not use the magic formula. We also derive analogous results for the vertex reinforced jump process.
description: 30 pages
Tanaidacea Dana 1849
Creators: name: Morales-Núñez, Andrés G.
name: Heard, Richard W.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Tanaidacea

description: Order Tanaidacea Dana, 1849
description: Published as part of Morales-Núñez, Andrés G. & Heard, Richard W., 2013, Ogleus pilarae, a new genus and species of leptocheliid tanaidacean (Crustacea: Peracarida: Tanaidomorpha) from the tropical Northwest Atlantic with observations on the genus Pseudonototanais Lang, 1973, pp. 454-472 in Zootaxa 3737 (4) on page 455, DOI: 10.11646/zootaxa.3737.4.7, http://zenodo.org/record/221262
Unruh gamma radiation at RHIC?
Creators: name: Biro, T. S.
name: Gyulassy, M.
name: Schram, Z.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Varying the proposition that acceleration itself would simulate a thermal environment, we investigate the semiclassical photon radiation as a possible telemetric thermometer of accelerated charges. Based on the classical Jackson formula we obtain the equivalent photon intensity spectrum stemming from a constantly accelerated charge and demonstrate its resemblances to a thermal distribution for high transverse momenta. The inverse transverse slope differs from the famous Unruh temperature: it is larger by a factor of pi. We compare the resulting direct photon spectrum with experimental data for AuAu collisions at RHIC and speculate about further, analytically solvable acceleration histories.
description: LaTeX 5 pages, 2 eps figures, PACS numbers: 24.10.Pa, 25.75.Ag, 25.20.Lj Keywords: Thermal models, Unruh temperature, bremsstrahlung, photon spectra
Efficient quantification of non-Gaussian spin distributions
Creators: name: Dubost, B.
name: Koschorreck, M.
name: Napolitano, M.
name: Behbood, N.
name: Sewell, R. J.
name: Mitchell, M. W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study theoretically and experimentally the quantification of non-Gaussian distributions via non-destructive measurements. Using the theory of cumulants, their unbiased estimators, and the uncertainties of these estimators, we describe a quantification which is simultaneously efficient, unbiased by measurement noise, and suitable for hypothesis tests, e.g., to detect non-classical states. The theory is applied to cold $^{87}$Rb spin ensembles prepared in non-gaussian states by optical pumping and measured by non-destructive Faraday rotation probing. We find an optimal use of measurement resources under realistic conditions, e.g., in atomic ensemble quantum memories.
A Topological Framework for Identifying Phenomenological Bifurcations in Stochastic Dynamical Systems
Creators: name: Tanweer, Sunia
name: Khasawneh, Firas A.
name: Munch, Elizabeth
name: Tempelman, Joshua R.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: Changes in the parameters of dynamical systems can cause the state of the system to shift between different qualitative regimes. These shifts, known as bifurcations, are critical to study as they can indicate when the system is about to undergo harmful changes in its behavior. In stochastic dynamical systems, there is particular interest in P-type (phenomenological) bifurcations, which can include transitions from a mono-stable state to multi-stable states, the appearance of stochastic limit cycles, and other features in the probability density function (PDF) of the system's state. Current practices are limited to systems with small state spaces, cannot detect all possible behaviours of the PDFs, and mandate human intervention for visually identifying the change in the PDF. In contrast, this study presents a new approach based on Topological Data Analysis (TDA) that uses superlevel persistence to mathematically quantify P-type bifurcations in stochastic systems through a "homological bifurcation plot'' -- which shows the changing ranks of 0th and 1st homology groups. Using these plots, we demonstrate the successful detection of P-bifurcations on the stochastic Duffing, Raleigh-Vander Pol and Quintic Oscillators given their analytical PDFs, and elaborate on how to generate an estimated homological bifurcation plot given a kernel density estimate (KDE) of these systems by employing a tool for finding topological consistency between PDFs and KDEs.
description: Update to abstract. Addition to the mathematical background for elaborating betti vectors and connecting betti vectors to the bifurcation plots in results section. Inclusion of analytically generated bifurcation plots, and comparison of the analytical vs estimated plots
Creating an Audit and Feedback Loop to Monitor and Enhance Data Sharing in Canada
Creators: name: Tayler, Felicity
name: Moher, David
name: Cobey, Kelly
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2020
Subjects: data sharing
training
research data management
assessment
open science
open access

description: Submitted to the NDRIO: Call for white papers on Canada’s future DRI ecosystem, 14 December 2020: Data sharing is an integral part of open scholarship and research integrity (i.e., trustworthiness of research). Canada is embracing data sharing practice and will roll out data management mandates in the near future. The success of these policies can be assured if discipline specific training in data sharing is provided, local infrastructure is created, and a data sharing dashboard is created (and assessed) to monitor the implementation of data sharing practices. Such actions will place Canada at the top of the innovation and global leadership list. NDRIO is perfectly positioned to play a central role to enable these activities. This white paper makes the following recommendations: • That NDRIO initiate a funding competition open to the researcher community to create a dashboard to monitor data sharing and other open scholarship practices. • That a parallel to funding competition be created to for researchers to initiate discipline specific national training resources.
Heterogeneous Directed Hypergraph Neural Network over abstract syntax tree (AST) for Code Classification
Creators: name: Yang, Guang
name: Jin, Tiancheng
name: Dou, Liang
Publisher: name: arXiv
Year: 2023
Subjects: subject: Software Engineering (cs.SE)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Code classification is a difficult issue in program understanding and automatic coding. Due to the elusive syntax and complicated semantics in programs, most existing studies use techniques based on abstract syntax tree (AST) and graph neural network (GNN) to create code representations for code classification. These techniques utilize the structure and semantic information of the code, but they only take into account pairwise associations and neglect the high-order correlations that already exist between nodes in the AST, which may result in the loss of code structural information. On the other hand, while a general hypergraph can encode high-order data correlations, it is homogeneous and undirected which will result in a lack of semantic and structural information such as node types, edge types, and directions between child nodes and parent nodes when modeling AST. In this study, we propose to represent AST as a heterogeneous directed hypergraph (HDHG) and process the graph by heterogeneous directed hypergraph neural network (HDHGN) for code classification. Our method improves code understanding and can represent high-order data correlations beyond paired interactions. We assess heterogeneous directed hypergraph neural network (HDHGN) on public datasets of Python and Java programs. Our method outperforms previous AST-based and GNN-based methods, which demonstrates the capability of our model.
description: Published in the 35th International Conference on Software Engineering and Knowledge Engineering (SEKE 2023) as a regular paper
Simulation of tethered oligomers in nanochannels using multi-particle collision dynamics
Creators: name: Raghu, Riyad
name: Schofield, Jeremy
Publisher: name: arXiv
Year: 2012
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The effect of a high Reynold's number, pressure-driven flow of a compressible gas on the conformation of an oligomer tethered to the wall of a square-channel is studied under both ideal solvent and poor solvent conditions using a hybrid multiparticle collision dynamics and molecular dynamics algorithm. Unlike previous studies, the flow field contains an elongational component in addition to a shear component as well as fluid slip near the walls and results in a Schmidt number for the polymer beads that is less than unity. In both solvent regimes the oligomer is found to extend in the direction of flow. Under the ideal solvent conditions, torsional twisting of the chain and aperiodic cyclical dynamics are observed for the end of the oligomer. Under poor solvent conditions, a metastable helix forms in the end of the chain despite the lack of any attractive potential between beads in the oligomeric chain. The formation of the helix is postulated to be the result of a solvent induced chain collapse that has been confined to a single dimension by a strong flow field.
description: 15 pages, 13 figures, to appear in J. Chem. Phys., 2012
Axios/Ipsos Coronavirus Index Wave 31
Creators: name: Axios
Publisher: name: Roper Center for Public Opinion Research
Year: 2020

description: Changes in health in last week (3); activities in last week (5); changes in work and household over last few weeks (3); personal work or shopping experiences in past few weeks (5); personal health and well-being (5); risk of different activities (7); safety procedures when leaving the house (3); time spent indoors at other places (6); holiday season plans (2); concern about coronavirus (COVID-19) outbreak (5); trust in organizations/politicians to provide accurate information about coronavirus (6); trust in organizations to have your best interests (5); coronavirus vaccine (6); coronavirus testing (8); main news source (1).
Megalopinus sexdentatus
Creators: name: Puthz, V.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Megalopinus
Megalopinus sexdentatus

description: Megalopinus sexdentatus (CAMERON 1914) Megalops sexdentatus CAMERON 1914: 529. Megalopinus sexdentatus; PUTHZ 2012: 1413. M a t e r i a l: LAOS: 233: Louangphrabang prov., Thong Khan, ca. 750m, 19 ° 35’N, 101 ° 50’E, 11.- 21.V.2002, V. Kubán; 2♀♀: 5 km W Ban Song Cha, 1200m, 20 ° 33 ° -34’N, 102 ° ° 14’E, 1.- 16.V.1999, idem; 1♀: Phongsaly prov., Ban Sano Mai, ca. 1150m, 21 21’N, 102 03’E, 19.- 26.V.2004, idem: Naturhistorisches Museum Basel und coll. Puthz. B e m e r k u n g Mit diesen Funden wird die Lücke zwischen China und Myanmar geschlossen.
description: Published as part of Puthz, V., 2013, Weitere Megalopinus-Arten aus der Orientalis (Coleoptera, Staphylinidae) (27. Beitrag zur Kenntnis der Megalopsidiinen), pp. 845-849 in Linzer biologische Beiträge 45 (1) on page 847, DOI: 10.5281/zenodo.5299505
Universal pacemaker of genome evolution
Creators: name: Snir, Sagi
name: Wolf, Yuri I.
name: Koonin, Eugene V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: Molecular clock (MC) is a central concept of molecular evolution according to which each gene evolves at a characteristic, near constant rate. Numerous evolutionary studies have demonstrated the validity of MC but also have shown that MC is substantially overdispersed, i.e. lineage-specific deviations of the evolutionary rate of the given gene from the clock greatly exceed the expectation from the sampling error. A fundamental observation of comparative genomics that appears to complement the MC is that the distribution of evolution rates across orthologous genes in pairs of related genomes remains virtually unchanged throughout the evolution of life, from bacteria to mammals. The conservation of this distribution implies that the relative evolution rates of all genes remain nearly constant, or in other words, that evolutionary rates of different genes are strongly correlated within each evolving genome. We hypothesized that this correlation is not a simple consequence of MC but could be better explained by a model we dubbed Universal PaceMaker (UPM) of genome evolution. The UPM model posits that the rate of evolution changes synchronously across genome-wide sets of genes in all evolving lineages. We sought to differentiate between the MC and UPM models by fitting thousands of phylogenetic trees for bacterial and archaeal genes to supertrees that reflect the dominant trend of vertical descent in the evolution of archaea and bacteria and that were constrained according to the two models. The goodness of fit for the UPM model was better than the fit for the MC model, with overwhelming statistical significance. These results reveal a universal pacemaker of genome evolution that could have been in operation throughout the history of life.
description: Three figures; supplementary information included; submitted to Nature
Even More Skills For Future Librarians?
Creators: name: Stummeyer, Sabine
name: Wittich, Anke
Publisher: name: Zenodo
Year: 2016
Subjects: library professionals
library
new professionals
non-textual-materials

description: Even more new skills for future librarians ??

The TIB as the German National Library of Science and Technology and as one of the largest technical libraries in the world, decided in 2009 to establish a Competence Centre for Non-Textual Materials (KNM).

This decision was led by the fact that the supply, use and significance of non-textual materials such as 3D models, audiovisual media and research data is continually increasing in the areas of research and education and only a tiny proportion of these materials can be searched and used at this present time. There is an urgent requirement for new concepts, workflows, tools and standards for non-textual materials in scientific libraries in order to make searching for ntM as easy as it already is for textual information.

To know the requirements of the users of an audiovisual media portal, the KNM conduced a survey to find out the top trends for innovative techniques, portals and projects in this area.

A market analysis identified institutions in Germany producing scientific films and av-media, the different formats and the subject and indexing methods.

The TIB has established the Competence Centre for Non-Textual Materials (KNM) in order to fundamentally improve access to, and use of, non-textual materials.

Some of the main focuses are:

- systematically collect, archive and display non-textual materials

- Integration of technical infrastructure: Media asset management system, streaming server for videos

- development of a metadata scheme for non-texual media (based on Dublin Core)

- allocation of a DOI name for non-textual materials

- digital preservation of non-textual materials

online upload possibility for videos and 3D models on our website

- developing media specific portals which offer new methods for searching enabled by automated video analysis with scene, speech, text and picture recognition.

- search results are connected to new knowledge by linking the data semantically

- support of media contributors in making their non-textual materials as well as the associated metadata available to the users, which includes acquisition, internal review process, metadata, publishing

Are these still typical issues today’s librarians are able to face? Or do they need to learn new skills?? Which ones?? And how??
description: Poster presented at the IFLA World Library and Information Congress, 79th IFLA General Conference and Assembly, 17-23 August 2013, Singapore
Flow Fluctuations from Early-Time Correlations in Nuclear Collisions
Creators: name: Gavin, Sean
name: Moschelli, George
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We propose that flow fluctuations have the same origin as transverse momentum fluctuations. The common source of these fluctuations is the spatially inhomogeneous initial state that drives hydrodynamic flow. Longitudinal correlations from an early Glasma stage followed by hydrodynamic flow quantitatively account for many features of multiplicity and $p_t$ fluctuation data. We develop a framework for studying flow and its fluctuations in this picture. We then compute elliptic and triangular flow fluctuations, and study their connections to the ridge.
Nuclear Rings in Galaxies---A Kinematic Perspective
Creators: name: Mazzuca, Lisa M.
name: Swaters, Robert A.
name: Knapen, Johan H.
name: Veilleux, Sylvain
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We combine DensePak integral field unit and TAURUS Fabry-Perot observations of 13 nuclear rings to show an interconnection between the kinematic properties of the rings and their resonant origin. The nuclear rings have regular and symmetric kinematics, and lack strong non-circular motions. This symmetry, coupled with a direct relationship between the position angles and ellipticities of the rings and those of their host galaxies, indicate the rings are in the same plane as the disc and are circular. From the rotation curves derived, we have estimated the compactness (v^2/r) up to the turnover radius, which is where the nuclear rings reside. We find that there is evidence of a correlation between compactness and ring width and size. Radially wide rings are less compact, and thus have lower mass concentration. The compactness increases as the ring width decreases. We also find that the nuclear ring size is dependent on the bar strength, with weaker bars allowing rings of any size to form.
description: 19 pages, 7 figures, accepted for publication into ApJ
CharSpan: Utilizing Lexical Similarity to Enable Zero-Shot Machine Translation for Extremely Low-resource Languages
Creators: name: Maurya, Kaushal Kumar
name: Kejriwal, Rahul
name: Desarkar, Maunendra Sankar
name: Kunchukuttan, Anoop
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: We address the task of machine translation (MT) from extremely low-resource language (ELRL) to English by leveraging cross-lingual transfer from 'closely-related' high-resource language (HRL). The development of an MT system for ELRL is challenging because these languages typically lack parallel corpora and monolingual corpora, and their representations are absent from large multilingual language models. Many ELRLs share lexical similarities with some HRLs, which presents a novel modeling opportunity. However, existing subword-based neural MT models do not explicitly harness this lexical similarity, as they only implicitly align HRL and ELRL latent embedding space. To overcome this limitation, we propose a novel, CharSpan, approach based on 'character-span noise augmentation' into the training data of HRL. This serves as a regularization technique, making the model more robust to 'lexical divergences' between the HRL and ELRL, thus facilitating effective cross-lingual transfer. Our method significantly outperformed strong baselines in zero-shot settings on closely related HRL and ELRL pairs from three diverse language families, emerging as the state-of-the-art model for ELRLs.
Theoretical optical and x-ray spectra of liquid and solid H_2O
Creators: name: Vinson, J.
name: Kas, J.
name: Vila, F.
name: Rehr, J. J.
name: Shirley, E. L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Theoretical optical and x-ray spectra of model structures of water and ice are calculated using a many-body perturbation theory, Bethe-Salpeter equation (BSE) approach implemented in the valence- and core-excitation codes AI2NBSE and OCEAN. These codes use ab initio density functional theory wave functions from a plane-wave, pseudopotential code, quasi-particle self energy corrections, and a BSE treatment of particle-hole interactions. The approach improves upon independent-particle methods through the inclusion of a complex, energy-dependent self energy and screened particle-hole interactions to account for inelastic losses and excitonic effects. These many-body effects are found to be crucial for quantitative calculations of ice and water spectra.
Noncentrosymmetric two-dimensional Weyl semimetals in porous Si/Ge structures
Creators: name: Lopes, Emmanuel V. C.
name: Baierle, Rogerio J.
name: Miwa, Roberto H.
name: Schmidt, Tome M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this work we predict a family of noncentrosymmetric two-dimensional (2D) Weyl semimetals composed by porous Ge and SiGe structures. These systems are energetically stable graphenylene-like structures with a buckling, spontaneously breaking the inversion symmetry. The nontrivial topological phase for these 2D systems occurs just below the Fermi level, resulting in nonvanishing Berry curvature around the Weyl nodes. The emerged Weyl semimetals are protected by $C_3$ symmetry, presenting one-dimensional edge Fermi-arcs connecting Weyl points with opposite chiralities. Our findings complete the family of Weyl in condensed-matter physics, by predicting the first noncentrosymmetric class of 2D Weyl semimetals.
An isomorphism theorem for random interlacements
Creators: name: Sznitman, Alain-Sol
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K35, 60J27, 60G15, 60F05

description: We consider continuous-time random interlacements on a transient weighted graph. We prove an identity in law relating the field of occupation times of random interlacements at level u to the Gaussian free field on the weighted graph. This identity is closely linked to the generalized second Ray-Knight theorem, and uniquely determines the law of occupation times of random interlacements at level u.
description: 11 pages
Outline on "The dark energy is the gravitational force between the photons outside the universe and the universe"
Creators: name: Yan, Max Gaofei
Publisher: name: Zenodo
Year: 2020
Subjects: Dark Energy, Expanding Universe, gravitational force, photons, EM waves, Unified Field Theory, matter with mass, Dark Matter

description: If there is gravitational force between photons/EM waves and matter with mass, then the dark energy is the gravitational force between the photons outside the universe and the universe.
Biological insights of transcription factor through analyzing ChIP-Seq data
Creators: name: Ning, Kaida
Publisher: name: University of British Columbia
Year: 2011

description: ChIP-Seq is a technology for detecting in vivo transcription factor binding sites or histone modification sites on a genome wide scale. How to utilize the large scale data and find out biological insights is a challenging question for us. Here, we analyzed three ChIP-Seq data sets for human HeLa cell, including data of a transcription factor called STAT1, data of RNA polymerase II (Pol2), and data of histone monomethylation (Me1). With these data sets, we looked into the spacial relationship between STAT1 binding sites, Po12 binding sites, Me1 flanked regions and the gene transcription start sites; we checked the intersection of locations of STAT1 binding sites, Pol2 binding sites and Me1 flanked regions; we did de novo motif discovery for the sequences around the STAT1 binding sites, and predicted several transcription factors whose binding sites may form cis-regulatory module with STAT1 binding site; we put the STAT1-centered sequences into different categories based on their spacial relationship with Pol2 binding sites and Me1 flanked regions, and found that the de novo discovered motifs’ occurrence rates are different in sequences of different categories; we also analyzed the ChIP-Seq data along with gene expression data, and found that STAT1 binding may be related with genes’ differential expression under IFN-gamma stimulation. We suggest that further ChIP-Seq experiment be carried out for TFs corresponding to the de novo predicted motifs, and that gene expression be characterized for the IFN-gamma stimulated HeLa cell on the whole genome scale.
An Analysis of How Many Undiscovered Vulnerabilities Remain in Information Systems
Creators: name: Spring, Jonathan M
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Vulnerability management strategy, from both organizational and public policy perspectives, hinges on an understanding of the supply of undiscovered vulnerabilities. If the number of undiscovered vulnerabilities is small enough, then a reasonable investment strategy would be to focus on finding and removing the remaining undiscovered vulnerabilities. If the number of undiscovered vulnerabilities is and will continue to be large, then a better investment strategy would be to focus on quick patch dissemination and engineering resilient systems. This paper examines a paradigm, namely that the number of undiscovered vulnerabilities is manageably small, through the lens of mathematical concepts from the theory of computing. From this perspective, we find little support for the paradigm of limited undiscovered vulnerabilities. We then briefly support the notion that these theory-based conclusions are relevant to practical computers in use today. We find no reason to believe undiscovered vulnerabilities are not essentially unlimited in practice and we examine the possible economic impacts should this be the case. Based on our analysis, we recommend vulnerability management strategy adopts an approach favoring quick patch dissemination and engineering resilient systems, while continuing good software engineering practices to reduce (but never eliminate) vulnerabilities in information systems.
Adhesion of 2D MoS$_2$ to Graphite and Metal Substrates Measured by a Blister Test
Creators: name: Calis, Metehan
name: Lloyd, David
name: Boddeti, Narasimha
name: Bunch, J. Scott
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Using a blister test, we measured the work of separation between MoS$_2$ membranes from metal, semiconductor, and graphite substrates. We found a work of separation ranging from 0.11 +- 0.05 J/m^2 for chromium to 0.39 +- 0.1 J/m^2 for graphite substrates. In addition, we measured the work of adhesion of MoS$_2$ membranes over these substrates and observed a dramatic difference between the work of separation and adhesion which we attribute to adhesion hysteresis. Due to the prominent role that adhesive forces play in the fabrication and functionality of devices made from 2D materials, an experimental determination of the work of separation and adhesion as provided here will help guide their development.
Coherence features of the spin-aligned neutron-proton pair coupling scheme
Creators: name: Qi, C.
name: Blomqvist, J.
name: Bäck, T.
name: Cederwall, B.
name: Johnson, A.
name: Liotta, R. J.
name: Wyss, R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The seniority scheme has been shown to be extremely useful for the classification of nuclear states in semi-magic nuclei. The neutron-proton ($np$) correlation breaks the seniority symmetry in a major way. As a result, the corresponding wave function is a mixture of many components with different seniority quantum numbers. In this contribution we show that the $np$ interaction may favor a new kind of coupling in $N=Z$ nuclei, i.e., the so-called isoscalar spin-aligned $np$ pair mode. Shell model calculations reveal that the ground and low-lying yrast states of the $N = Z$ nuclei $^{92}$Pd and $^{96}$Cd may mainly be built upon such spin-aligned $np$ pairs each carrying the maximum angular momentum $J = 9$ allowed by the shell $0g_{9/2}$ which is dominant in this nuclear region.
description: 5 pages, 4 figues, Proceedings of the Nordic Conference on Nuclear Physics 2011. To appear in Physica Scripta T
Defensive Nationalism: The Case of Ukraine -An examination of the Ukrainian national identity through history and its application in modern day politics
Creators: name: Κούγκας, Κωσταντίνος Διουνυσίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Παγκοσμιοποίηση
Εθνικισμός
Πόλεμος στην Ουκρανία
Globalism
Nationalism
Russo-Ukrainian war

description: The dissertations concerns itself with the turbulent history regarding Ukraine’s and Russia’s past, their relations, the ongoing nationalistic disputes and struggles, as well how these events and concepts have manifested themselves in the Russo-Ukrainian conflict that has been plaguing both nations since the February of 2022. In it, matters of history, nationalism and globalism are examined in order to introduce the novel concept of Defensive Nationalism, a form of nationalism which has began to form since the years leading up to the conflict, culminating in the ongoing defense of Ukraine.
description: Η παρούσα μεταπτυχιακή άσκηση ασχολείται με το ταραχώδες παρελθόν που συνδέει την Ουκρανία και την Ρωσία, τις σχέσεις τους, τις εν εξελίξει εθνικιστικές αντιπαραθέσεις τους, καθώς και πως οι παραπάνω αντιλήψεις έχουν εκδηλωθεί στον Ρωσο-Ουκρανικό πόλεμο που έχει σημαδέψει και τα δύο έθνη από τον Φεβρουάριο του 2022. Στην εργασία, θέματα ιστορίας, εθνικισμού και παγκοσμιοποίησης εξετάζονται με σκοπό να θεσπίσουν την καινοτόμα έννοια του Αμυντικού Εθνικισμού, μια μορφή εθνικισμού διαμορφωμένη κατά τα χρόνια που οδήγησαν στην απαρχή του πολέμου, καταλήγοντας στην τρέχουσα άμυνα της Ουκρανίας.
Weather systems and their roles in rainfall variability and extremes in Australia
Creators: name: Jin, Chenhui
Publisher: name: Monash University
Year: 2025
Subjects: classificationCode: 370108
subject: Meteorology

description: Weather systems play an important role in the Earth system by producing rainfall needed for agriculture, ecosystems, and human activities. This thesis examines a wide range of rainfall-producing weather systems and their influences on heavy rainfall events that are important during different stages of drought in Australia.
Study of statistical correlations in intraday and daily financial return time series
Creators: name: Tilak, Gayatri
name: Szell, Tamas
name: Chicheportiche, Remy
name: Chakraborti, Anirban
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Finance (q-fin.ST)
subject: FOS: Economics and business

description: The aim of this article is to briefly review and make new studies of correlations and co-movements of stocks, so as to understand the "seasonalities" and market evolution. Using the intraday data of the CAC40, we begin by reasserting the findings of Allez and Bouchaud [New J. Phys. 13, 025010 (2011)]: the average correlation between stocks increases throughout the day. We then use multidimensional scaling (MDS) in generating maps and visualizing the dynamic evolution of the stock market during the day. We do not find any marked difference in the structure of the market during a day. Another aim is to use daily data for MDS studies, and visualize or detect specific sectors in a market and periods of crisis. We suggest that this type of visualization may be used in identifying potential pairs of stocks for "pairs trade".
description: 22 pages, 11 figures, Springer-Verlag format. To appear in the conference proceedings of Econophys-Kolkata VI: "Econophysics of systemic risk and network dynamics", Eds. F. Abergel, B.K. Chakrabarti, A. Chakraborti and A. Ghosh, to be published by Springer-Verlag (Italia), Milan (2012)
title:  Rahmenkonzept des Projektes „Handlungsstrategien für heterogene Klassen – OER für die Lehrkräftebildung“
Creators: name: Vierbuchen, Marie-Christine
name: Hillenbrand, Clemens
name: Rau, Franco
name: Schorer, Susanne
name: Schröder, Lea
name: Mudder, Lisa
Publisher: name: twillo
Year: 2022
Subjects: classificationCode: 5.3
subject: FOS: Educational sciences

description: Herzlich Willkommen zum Projekt "OER für die Lehrkräftebildung - Handlungsstrategien für heterogene Lerngruppen" der Universitäten Oldenburg und Vechta, in Zusammenarbeit mit der Universität Flensburg. In diesem Projekt haben wir OER-Materialien erstellt, die sich für die Lehrkräftebildung aller Lehrämter einsetzten lassen und das Thema Inklusion und heterogene Lerngruppen näher beleuchtet. Die verschiedenen Videos, Podcasts und Texte geben Einblick in den aktuellen Stand der Forschung und vermitteln wichtige Impulse für wirkungsvollen Unterricht. Wir richten uns mit den Materialien an Hochschullehrende und Lehramtsstudierende aller Fachrichtungen sowie an alle Interessierten. Weitere Informationen finden sich auch auf unserer Website unter www.uol.de/oer-lkb.
Orfelia fasciata
Creators: name: El Mouden, Mohamed Amin
name: Chandler, Peter J.
name: Saidoun, Imane
name: Driauach, Ouafaa
name: Belqat, Boutaïna
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Keroplatidae
Orfelia
Orfelia fasciata

description: Orfelia fasciata (Meigen, 1804)
Material examined.
Morocco – Middle Atlas Region • 1 ♂; Cascade Ras Lma; 19/V/2022; K. Aattouch, M. El Ouahabi and M. A. El Mouden leg; UAE-FST MA 22/2406 • 1 ♂; Oued Lek’hal; 20/V/2022; K. Aattouch, M. El Ouahabi and M. A. El Mouden leg; UAE-FST MA 22/2407 • 1 ♂; Oued El Ghannaj; 22/V/2022; K. Aattouch, M. El Ouahabi and M. A. El Mouden leg; UAE-FST MA 22/2408.
North African distribution.
New to Morocco and North Africa.
description: Published as part of El Mouden, Mohamed Amin, Chandler, Peter J., Saidoun, Imane, Driauach, Ouafaa & Belqat, Boutaïna, 2025, A new species of Docosia Winnertz, 1864 and new records of fungus gnats (Diptera, Bolitophilidae, Keroplatidae and Mycetophilidae) from North Africa, pp. 349-379 in ZooKeys 1233 on pages 349-379, DOI: 10.3897/zookeys.1233.130502
Φαινόμενα εθνικισμού στον Ελληνικό τύπο, με αφορμή την υπογραφή της Συμφωνίας των Πρεσπών
Creators: name: Κουταβάς, Σπυρίδων Γεράσιμου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Συμφωνία των Πρεσπών
Εθνοκεντρικός λόγος
Ονομασία της ΠΓΔΜ
Prespa Agreement
Ethnocentric discourse
Name of FYROM

description: Στις 17 Ιουνίου στο χωριό Ψαράδες Πρεσπών, παρουσία του Ειδικού απεσταλμένου των ΟΗΕ Μάθιου Νίμιτς, της βοηθού του Γενικού Γραμματέα των Ηνωμένων Εθνών Ρόζμαρι Ντι Κάρλο, της Ύπατης Εκπροσώπου της Ευρωπαϊκής Ένωσης για θέματα Εξωτερικής Πολιτικής και Πολιτικής Ασφαλείας Φεντερίκα Μογκερίνι και του Επιτρόπου Περιφερειακής Πολιτικής της Ευρωπαϊκής Ένωσης Γιοχάνες Χάν, οι υπουργοί Εξωτερικών της Ελλάδας Νίκος Κοτζιάς και Νικολά Δημητρώφ της ΠΓΔΜ, ενώπιον των Πρωθυπουργών Αλέξη Τσίπρα και Ζόραν Ζάεφ υπέγραψαν τη Συμφωνία των Πρεσπών. Η Συμφωνία των Πρεσπών επετεύχθη μέσα σε κλίμα εμπιστοσύνης, αμοιβαιότητας και υποχωρήσεων ανάμεσα στα συμβαλλόμενα μέρη, ενώ στο εσωτερικό των δύο χωρών υπήρξαν σφοδρές πολιτικές αντιπαραθέσεις, αντιδράσεις και μαχητικά συλλαλητήρια. Το θέμα της Συμφωνίας ήταν κυρίαρχο στην ειδησιογραφία με ρεπορτάζ, αρθρογραφία, έρευνες κοινής γνώμης, διάλογο κι αντίλογο από αρθρογράφους κι αναλυτές των διεθνών σχέσεων. Μέσα από τη διερεύνηση δημοσιευμάτων τριών (3) Εβδομαδιαίων εφημερίδων Πανελλαδικής εμβέλειας, διαπιστώθηκαν στοιχεία εθνικιστικής προκατάληψης στον δημοσιογραφικό λόγο. Παρατηρήθηκαν σημαντικές διαφοροποιήσεις ανάμεσα στις εφημερίδες ως προς τη θετική η αρνητική τους στάση τους απέναντι στη Συμφωνία, ενώ το φαινόμενο της «συστοίχισης με τη σημαία» λόγω της ισχυρής διαφωνίας των κομμάτων του Ελληνικού Κοινοβουλίου ήταν πολύ χαμηλό.
description: On 17th June 2018 in “Psarades” village - municipality of Prespa - the Greek and FYROM Ministers of Foreign Affairs, Mr. Nikos Kotzias and Mr. Nikola Dimitroff respectively signed the Prespa Agreement before the Prime Ministers of Greece and FYROM, Mr. Alexis Tsipras and Zoran Zaev. The agreement was signed in the presence of the UN Special Envoy Matthew Nimetz, the Assistant Secretary General of the United Nations Rosemary Di Carlo, the High Representative of the European Union for Foreign Affairs and Security Policy Federica Mogherini and the Commissioner for Regional Policy of the European Union Johannes Hahn. The Prespa Agreement was reached in a climate of trust, reciprocity and concessions between the contracting parties, while there were intense political confrontations, reactions, and militant protests within the two countries. The Agreement was a dominant topic in the media, with reports, articles, public opinion surveys, dialogue, and counterarguments by journalists and international relations analysts. Through the research of publications of three nationwide weekly newspapers, elements of nationalist bias were identified in the journalistic discourse. Significant differences were observed among the newspapers regarding their positive or negative stance towards the Prespa Agreement, while the phenomenon of "aligning with the flag" due to the strong disagreement among the parties in the Greek Parliament was found to be very low.
Weak Localisation Driven by Pseudospin-Spin Entanglement
Creators: name: Sousa, Frederico
name: Perkins, David T. S.
name: Ferreira, Aires
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: At low temperatures, quantum corrections, originating from the interference of the many paths an electron may take between two points, tend to dominate the transport properties of two-dimensional conductors. These quantum corrections increase the resistivity in systems such as two-dimensional electron gases (2DEGs) without spin-orbit coupling (SOC), a phenomenon called weak localisation. Including symmetry-breaking SOC leads to a change from weak localisation (WL) to weak anti-localisation (WAL) of the electronic states, i.e. a WL-to-WAL transition. Here, we revisit the Cooperon, the propagator encoding quantum corrections, within the context of ultra-clean graphene-based van der Waals heterostructures with strong symmetry-breaking Bychkov-Rashba SOC to yield two completely counter-intuitive results. Firstly, we find that quantum corrections vary non-monotonically with the SOC strength, a clear indication of non-perturbative physics. Secondly, we observe the exact opposite of that seen in 2DEGs with strong SOC: a WAL-to-WL transition. This dramatic reversal is driven by mode entanglement of the pseudospin and spin degrees of freedom describing graphene's electronic states. We obtain these results by constructing a non-perturbative treatment of the Cooperon, and observe distinct features in the SOC dependence of the quantum corrections to the electrical conductivity that would otherwise be missed by standard perturbative approaches.
description: 20 pages, 4 figures, does not include Supplementary Information. This version of the article has been accepted for publication, after peer review (when applicable) but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1038/s42005-022-01066-z