cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Augment your PubMed literature search with citation data downloaded from the NIH with pmidcite
Creators: name: Klopfenstein, DV
Publisher: name: Zenodo
Year: 2021
Subjects: Bibliometrics
citation
PubMed
PMID
literature search

description: Augment a PubMed literature search by linking data downloaded from NIH's Open Citation Collection (NIH-OCC) for researcher-specified PubMed IDs (PMIDs) using the command line rather than clicking and clicking and clicking on Google Scholar Cited by N links.
description: {"references": ["Gusenbauer M and Haddaway N (2019). Which Academic Search Systems are Suitable for Systematic Reviews or Meta-Analyses? Evaluating Retrieval Qualities of Google Scholar, PubMed and 26 other Resources: 10.1002/jrsm.1378"]}
Direct imaging of the structural change generated by dielectric breakdown in MgO based magnetic tunnel junctions
Creators: name: Thomas, A.
name: Drewello, V.
name: Schaefers, M.
name: Weddemann, A.
name: Reiss, G.
name: Eilers, G.
name: Muenzenberg, M.
name: Thiel, K.
name: Seibt, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: MgO based magnetic tunnel junctions are prepared to investigate the dielectric breakdown of the tunnel barrier. The breakdown is directly visualized by transmission electron microscopy measurements. The broken tunnel junctions are prepared for the microscopy measurements by focussed ion beam out of the junctions characterized by transport investigations. Consequently, a direct comparison of transport behavior and structure of the intact and broken junctions is obtained. Compared to earlier findings in Alumina based junctions, the MgO barrier shows much more microscopic pinholes after breakdown. This can be explained within a simple model assuming a relationship between the current density at the breakdown and the rate of pinhole formation.
Evolution of the Radio Loud Galaxy Population
Creators: name: Donoso, E.
name: Best, P. N.
name: Kauffmann, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A catalogue of 14453 radio-loud AGN with 1.4 GHz fluxes above 3.5 mJy in the redshift range 0.4
description: 14 pages, 11 figures, submitted to MNRAS
Sputtered 2D transition metal dichalcogenides: from growth to device applications
Creators: name: Acar, Merve
name: Gur, Emre
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Starting from graphene, 2D layered materials family has been recently set up more than 100 different materials with variety of different class of materials such as semiconductors, metals, semimetals, superconductors. Among these materials, 2D semiconductors have found especial importance in the state of the art device applications compared to that of the current conventional devices such as (which material based for example Si based) field effect transistors (FETs) and photodetectors during the last two decades. This high potential in solid state devices is mostly revealed by the transition metal dichalcogenides (TMDCs) semiconductor materials such as MoS2 , WS2 , MoSe2 and WSe2 . Therefore, many different methods and approaches have been developed to grow or obtain so far in order to make use them in solid state devices, which is a great challenge in large area applications. Although there are intensively studied methods such as chemical vapor deposition (CVD), mechanical exfoliation, atomic layer deposition, it is sputtering getting attention day by day due to the simplicity of the growth method together with its reliability, large area growth possibility and repeatability. In this review article, we provide benefits and disadvantages of all the growth methods when growing TMDC materials, then focusing on the sputtering TMDC growth strategies performed. In addition, TMDCs for the FETs and photodetector devices grown by RFMS have been surveyed.
description: 17 pages 6 figures
U.H.F. radio echo sounding of Yukon glaciers
Creators: name: Narod, Brian Barry
Publisher: name: University of British Columbia
Year: 2010

description: A high-resolution radio echo sounder operating at a frequency of 840 MHz has been developed for sounding of small and medium-sized polar glaciers and ice caps. The sounder uses a compact, high-gain antenna which improves the system performance, suppresses valley wall echoes and simplifies operation from light aircraft. Successful field trials were carried out on the Rusty, Trapridge and Hazard Glaciers, Yukon Territory, Canada. Results of airborne surveys compare well with ice depths obtained from earlier ground-based soundings on the Rusty and Trapridge Glaciers. The maximum ice thickness encountered was 200 m on Hazard Glacier. Owing to the high operating frequency, random scattering from inhomogeneities within the ice is a major cause of signal degradation. For this reason the sounder cannot penetrate great thicknesses of temperate or debris-rich ice. Spatial averaging, an immediate result of operating from a moving platform, reduces the effects of back-scattered "clutter. " Results of ground-based tests on the Hazard Glacier yield a value for ftan 8 = 0.26 at -50C, in agreement with predicted values. The total received power and the echo details have both been found to be very sensitive to small (<<I0 cm) changes in antennae position. Large fluctuations in power, caused by roughness at or near the ice/air surface, prevented using single coverage data to detect birefringence in glacier ice. The results also indicate that the standard photographic records should be replaced by a recording medium capable of storing more precise and accessible data. A storage medium such as magnetic tape should not degrade the radar data, and would at the same time relieve a data processing burden.
title: Frontmatter, Table of Contents, Preface, Workshop Organization
Creators: name: Neykova, Rumyana
name: Ng, Nicholas
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2014
Subjects: subject: Frontmatter
subject: Table of Contents
subject: Preface
subject: Workshop Organization

description: Frontmatter, Table of Contents, Preface, Workshop Organization
description: OASIcs, Vol. 43, 2014 Imperial College Computing Student Workshop, pages i-xiii
An insight into spin-chain magnetism through Moessbauer spectroscopic investigations in Eu-doped Ca3Co2O6 and Ca3CoRhO6
Creators: name: Paulose, P. L.
name: Mohapatra, Niharika
name: Sampathkumaran, E. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report the results of 151Eu Moessbauer effect and magnetization measurements in the Eu-doped Ca3Co2O6 and Ca3CoRhO6, which are of great current interest in the fields of spin-chain magnetism and geometrical frustration. We find that there is a pronounced increase in the line-width of the Moessbauer spectra below a certain characteristic temperature which is well-above the one at which three-diensional ordering features set in. This unusual broadening of the spectra indicates the existence of a characteristic temperature in these 'exotic' magnetic systems, attributable to the onset of incipient one-dimensional magnetic order. This is inferred from an intriguing correlation of this characteristic temperature with the paramagnetic Curie temperature (a measure of intrachain coupling strength in these cases).
Quantum mechanical effects in the light-harvesting complexes of genetically engineered purple non-sulfur bacteria
Creators: name: Tomás Nery, Eveliny
Publisher: name: University of Surrey
Year: 2023
Subjects: Quantum biology
purple non-sulfur bacteria
light-harvesting
Rhodobacter sphaeroides
Rhodoblastus acidophilus
PNSB
LH2
Photosynthesis

description: Purple non-sulfur bacteria (PNSB) are metabolically versatile microorganisms which inhabit the most diverse environments by taking advantage of remarkably efficient photosynthetic machinery. Studies carried during the last decades have suggested that this high efficiency is mainly a result of quantum coherent interactions occurring between the electronic states of photosynthetic pigments and their surrounding intramolecular, protein and solvent motions. Although such hypothesis is theoretically well established and has been supported by the presence of “quantum beats” detected during 2D spectroscopy analyses, experimental data obtained in vivo and the evolutionary implications of such mechanism are still missing. In the present work, I describe my attempts to create a system for the performance of such experimental studies using the light-harvesting complex 2 (LH2) expressed by PNSB as model. The approach chosen for this purpose was based on the modification of the LH2 protein scaffold to tune the absorption properties and, consequently, the electronic states of the pigments. During the efforts to create a platform for the expression of LH2 spectral variants, the genome and transcriptome of Rhodoblastus acidophilus subject to different treatments have been analysed. The data revealed an extremely versatile microorganism with a complex network for regulation of photosynthesis. The second part of the project consisted of the expression and spectral analysis of LH2 variants being expressed in the model PNSB Rhodobacter sphaeroides. The results obtained in this study suggest that the LH2s variants expressed by PNSB reflects the intricate tunning of their quantum properties towards the optimum light-harvesting efficiencies which is dependent on the environmental conditions. Ultimately, this work constitutes a foundation for the development of bioinspired sunlight harvesting technologies and has implications for our understanding of the evolution of bacterial photosynthesis and quantum mechanical effects in biology.
Factors Incompatibility of Selection and Implementation of ERP Systems for Construction Organizations - Lessons from Sri Lanka
Creators: name: Nanayakkara, Samudaya
name: Perera, Prasad
name: Perera, Asoka
Publisher: name: figshare
Year: 2021
Subjects: subject: 120201 Building Construction Management and Project Planning
subject: FOS: Civil engineering
subject: 80309 Software Engineering
subject: FOS: Computer and information sciences

description: Information and Communications Technology (ICT) and Information Systems (ISs) compose a critical role in today’s organization environment. Enterprise Systems (ESs) such as Enterprise Resource Planning (ERP), Customer Relationship Management (CRM) systems are the most cutting-edge IS in present corporate world. ERP system bridges the organization’s different functions together into single large integrated system and it makes an extra opportunity for growth and increased productivity. Enterprise system usage in manufacturing companies is well established. However, the available studies relating to the use of ERP systems in project based companies such as construction organizations is comparatively low and success rate is also limited. The literature illustrates that there are many factors that affect selecting and implementation of ERP systems.
This research is mainly based on qualitative research methodology. Primary data were collected from construction industry and their Information Technology (IT) experts and ERP implementation project managers though intensive interviews. The objective of using the qualitative research was used to gain an understanding of underlying reasons, opinions, and motivations. It facilitated to find out common and main barriers and their effect to implementation and adaptation of ERPs against factors influencing the selection process. Furthermore, secondary data such as literature was also contributory to the main outcome and results.
Influencing factors that analysis research results reveal new way of rationale for selecting and implementation of ERP systems in construction organizations. The main propositions derived from the study are as follows: higher influencing factors in selecting process are Vendor/Software Reputation, Alignment with Business Function, Cost and C-level Officers' (such as CEO, CFO, COO, CIO, etc.) countenance. Important factors influencing success of implementation and adaptation of ERPs are Being in alignment with Business Function, Support and Training, Usability and User friendliness, Implementation Team, Vendor-Employee Interaction and C-level Officers' countenance. In other words this research illustrates that not only an IT related factors can influence the success of ERP implementation and also non-IT related factors are much significant to success. Beyond that the study also reveals that how to do sensible selection process which assist the success of implementation of ERP.
Coupling Nonlinear Sigma-Matter to Yang-Mills Fields: Symmetry Breaking Patterns
Creators: name: Aldaya, V
name: Calixto, M
name: Lopez-Ruiz, F F
name: Sanchez-Sastre, E
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We extend the traditional formulation of Gauge Field Theory by incorporating the (non-Abelian) gauge group parameters (traditionally simple spectators) as new dynamical (nonlinear-sigma-model-type) fields. These new fields interact with the usual Yang-Mills fields through a generalized minimal coupling prescription, which resembles the so-called Stueckelberg transformation, but for the non-Abelian case. Here we study the case of internal gauge symmetry groups, in particular, unitary groups U(N). We show how to couple standard Yang-Mills Theory to Nonlinear-Sigma Models on cosets of U(N): complex projective, Grassman and flag manifolds. These different couplings lead to distinct (chiral) symmetry breaking patterns and \emph{Higgs-less} mass-generating mechanisms for Yang-Mills fields.
description: 11 pages. To appear in Journal of Nonlinear Mathematical Physics
Artificial Neural Networks for cosmic gamma-ray propagation in the Universe
Creators: name: Singh, K K
name: Dhar, V K
name: Meintjes, P J
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We explore the potential of an artificial neural network (ANN) based method intelligence to probe the propagation of cosmic $γ$-ray photons in the extragalactic Universe. The journey of $γ$-rays emitted from a distant source like blazar to the observer at the Earth is impeded by the absorption through the interaction with the extragalactic background light (EBL), leading to an electron-positron pair production. This process dominates for gamma ray photons with energy above 10 GeV propagating over the cosmological distances. The effect of $γ$-ray attenuation is characterized by a physical quantity called \emph{optical depth}, which strongly depends on the $γ$-ray photon energy, redshift of the source, and density of the EBL photons. We estimate the optical depth values for $γ$-ray energies above 10 GeV emitted from the sources at redshifts in the range 0.01 to 1 using three different and most promising EBL models. These optical depth estimates are randomly divided into two data sets for training and testing of the ANN using energy, redshift as inputs and optical depth as output. The optimization of ANN-performance for each EBL model employs standard back-propagation (BP) and radial-basis function (RBF) algorithms. The performance of the ANN model using the RBF is found to be superior to the BP method. In particular, the RBF-ANN with 40 neurons in the hidden layer corresponding to the EBL model proposed by Finke et al. (2010) shows the best performance for the propagation of $γ$-rays in the Universe.
description: 23 Pages, 6 Tables, 6 Figures, Accepted for Publication in New Astronomy Journal
Atomistic Simulations of Elastic and Plastic Properties in Amorphous Silicon
Creators: name: Talati, Mina
name: Albaret, Tristan
name: Tanguy, Anne
Publisher: name: arXiv
Year: 2008
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We present here potential dependent mechanical properties of amorphous silicon studied through molecular dynamics (MD) at low temperature. On average, the localization of elementary plastic events and the co-ordination defect-sites appears to be correlated. For Tersoff potential and SW potential the plastic events centered on defects-sites prefer 5-fold defect sites, while for modified Stillinger-Weber potential such plastic events choose 3-fold defect sites. We also analyze the non-affine displacement field in amorphous silicon obtained for different shear regime. The non-affine displacement field localizes when plastic events occur and shows elementary shear band formation at higher shear strains.
description: conference, 7 pages, 6 figures
Additional file 3 of Comparative effectiveness and acceptability of internet-based psychological interventions on depression in young people: a systematic review and network meta-analysis
Creators: name: Chen, Baijun
name: Li, Jialong
name: Qi, Yuxin
name: Mao, Honghui
name: Liu, Yihui
name: Wang, Wenting
Publisher: name: figshare
Year: 2025
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: Mental Health

description: Additional file 3. Descriptions and details of interventions.
Coulomb Branch Global Symmetry and Quiver Addition
Creators: name: Gledhill, Kirsty
name: Hanany, Amihay
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: To date, the best effort made to simply determine the Coulomb branch global symmetry of a theory from a $3d$ $\mathcal{N}=4$ quiver is by applying an algorithm based on its balanced gauge nodes. This often gives the full global symmetry, but there have been many cases seen where it instead gives only a subgroup. This paper presents a method for constructing several families of $3d$ $\mathcal{N}=4$ unitary quivers where the true global symmetry is enhanced from that predicted by the balance algorithm, motivated by the study of Coulomb branch Hasse diagrams. This provides a rich list of examples on which to test improved algorithms for unfailingly identifying the Coulomb branch global symmetry from a quiver.
Universal Communication Interface through Web Services for Heterogeneous Systems with Dynamic System Life Cycle
Creators: name: Nanayakkara, Samudaya
name: Perera, Prasad
name: Fernando, Shantha
Publisher: name: figshare
Year: 2021
Subjects: subject: 80309 Software Engineering
subject: FOS: Computer and information sciences

description: At present most of the organizational Information systems are formed using several heterogeneous distributed systems. Relevant information might be maintained in several distributed systems. “Openness” is the basic and the most important property of a distributed system for intercommunication. It describes how systems can be extended to be inter-operated with other systems. So many standards and protocols are developed for sharing data. Among several available standards and protocols, Simple Object Access Protocol (SOAP) web-service is becoming popular. However, these standards and protocols have limitations when it is necessary to transfer different formats of information between heterogeneous systems.
The new protocol that is introduced in this research is based on human communication and conversation techniques. Rather than in system communication, human communication gives the upper hand for the two parties by enabling a meaningful communication exchange. This new protocol is built upon the SOAP protocol for online communications. It is designed in such a way, that most of the drawbacks of existing protocols and standards are eliminated.This new information transfer protocol is bundled with security features and better performance mechanism. It also can handle a communication process even when one party is rapidly changing, and hence it allows continuous system developments independent of the communication interface. Heterogeneous systems will be able to use this new protocol to exchange their information in a more effective and flexible manner.
Commensurability and hysteretic evolution of vortex configurations in rotating optical lattices
Creators: name: Goldbaum, Daniel S.
name: Mueller, Erich J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present a theoretical study of vortices within a harmonically trapped Bose-Einstein condensate in a rotating optical lattice. Due to the competition between vortex-vortex interactions and pinning to the optical lattice we find a very complicated energy landscape, which leads to hysteretic evolution. The qualitative structure of the vortex configurations depends on the commensurability between the vortex density and the site density -- with regular lattices when these are commensurate, and concentric rings when they are not. We model the imaging of these structures by calculating time-of-flight column densities. As in the absence of the optical lattice, the vortices are much more easily observed in a time-of-flight image than \emph{in-situ}.
description: 8 pages, 3 figures. Some, but not all, material is included in arXiv:0807.3609. A new simulation of a time-of-flight absorption image is included
Distribution Matching for Rationalization
Creators: name: Huang, Yongfeng
name: Chen, Yujun
name: Du, Yulun
name: Yang, Zhilin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: The task of rationalization aims to extract pieces of input text as rationales to justify neural network predictions on text classification tasks. By definition, rationales represent key text pieces used for prediction and thus should have similar classification feature distribution compared to the original input text. However, previous methods mainly focused on maximizing the mutual information between rationales and labels while neglecting the relationship between rationales and input text. To address this issue, we propose a novel rationalization method that matches the distributions of rationales and input text in both the feature space and output space. Empirically, the proposed distribution matching approach consistently outperforms previous methods by a large margin. Our data and code are available.
description: Accepted by AAAI2021
White dwarf planetary debris dependence on physical structure distributions within asteroid belts
Creators: name: McDonald, Catriona H.
name: Veras, Dimitri
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: White dwarfs which exhibit transit signatures of planetary debris and accreted planetary material provide exceptional opportunities to probe the material composition and dynamical structure of planetary systems. Although previous theoretical work investigating the role of minor body disruption around white dwarfs has focussed on spherical bodies, Solar System asteroids can be more accurately modelled as triaxial ellipsoids. Here we present an analytical framework to identify the type of disruption (tidal fragmentation, total sublimation or direct impact) experienced by triaxial asteroids approaching white dwarfs on extremely eccentric (e \sim 1) orbits. This framework is then used to identify the outcomes for simplified Main belt analogues of 100 bodies across five different white dwarf temperatures. We also present an empirical relationship between cooling age and effective temperature for both DA and DB white dwarfs to identify the age of the white dwarfs considered here. We find that using a purely spherical shape model can underestimate the physical size and radial distance at which an asteroid is subjected to complete sublimation, and these differences increase with greater elongation of the body. Contrastingly, fragmentation always occurs in the largest semi-axis of a body and so can be modelled by a sphere of that radius. Both fragmentation and sublimation are greatly affected by the body's material composition, and hence by the composition of their progenitor asteroid belts. The white dwarf temperature, and hence cooling age, can affect the expected debris distribution: higher temperatures sublimate large elongated asteroids, and cooler temperatures accommodate more direct impacts.
description: Accepted for publication in MNRAS
Transient terahertz spectroscopy of excitons and unbound carriers in quasi two-dimensional electron-hole gases
Creators: name: Kaindl, R. A.
name: Haegele, D.
name: Carnahan, M. A.
name: Chemla, D. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report a comprehensive experimental study and detailed model analysis of the terahertz dielectric response and density kinetics of excitons and unbound electron-hole pairs in GaAs quantum wells. A compact expression is given, in absolute units, for the complex-valued terahertz dielectric function of intra-excitonic transitions between the 1s and higher-energy exciton and continuum levels. It closely describes the terahertz spectra of resonantly generated excitons. Exciton ionization and formation are further explored, where the terahertz response exhibits both intra-excitonic and Drude features. Utilizing a two-component dielectric function, we derive the underlying exciton and unbound pair densities. In the ionized state, excellent agreement is found with the Saha thermodynamic equilibrium, which provides experimental verification of the two-component analysis and density scaling. During exciton formation, in turn, the pair kinetics is quantitatively described by a Saha equilibrium that follows the carrier cooling dynamics. The terahertz-derived kinetics is, moreover, consistent with time-resolved luminescence measured for comparison. Our study establishes a basis for tracking pair densities via transient terahertz spectroscopy of photoexcited quasi-two-dimensional electron-hole gases.
description: 14 pages, 8 figures, final version
PARALYMPICS: AN OPEN PLATFORM WITH SCOPE FOR DISABILITIES AND TECHNOLOGIES
Creators: name: Kumar, Mukesh
name: Prajapati, Manoj Kumar
name: Patel, Shri Krishna
Publisher: name: figshare
Year: 2021
Subjects: subject: 130210 Physical Education and Development Curriculum and Pedagogy
subject: FOS: Educational sciences

description: ABSTRACT:
In sports the contribution of technology is always a hot topic of discussion, but when it comes about the Paralympics it is even more contradictory because here is a visible and prominent connection existing between sports persons and assistive devices. The main objective of this paper is to identify and describe the latest technological developments in Paralympic games. Individuals with impairments generally depend on various assistive devices for the activities of their daily living as well as in competing for sports. Lots of controversies are associated with technological developments in sports because there is a great impact of these technological modifications on the type of Paralympic games and on the technique of playing these games. The uses of these assistive aids can be to a high extent or can be very low. Over the last few decades the technologies at the Paralympic games had helped a lot in specializing the games of an individual athlete
Moduli Spaces of Semistable Sheaves on Singular Genus One Curves
Creators: name: Ruipérez, Daniel Hernández
name: Martín, Ana Cristina López
name: Gómez, Darío Sánchez
name: Prieto, Carlos Tejero
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 18E30; 14F05

description: We find some equivalences of the derived category of coherent sheaves on a Gorenstein genus one curve that preserve the (semi)-stability of pure dimensional sheaves. Using them we establish new identifications between certain Simpson moduli spaces of semistable sheaves on the curve. For rank zero, the moduli spaces are symmetric powers of the curve whilst for a fixed positive rank there are only a finite number of non-isomorphic spaces. We prove similar results for the relative semistable moduli spaces on an arbitrary genus one fibration with no conditions either on the base or on the total space. For a cycle $E_N$ of projective lines, we show that the unique degree 0 stable sheaves are the line bundles having degree 0 on every irreducible component and the sheaves $\mathcal{O}(-1)$ supported on one irreducible component. We also prove that the connected component of the moduli space that contains vector bundles of rank $r$ is isomorphic to the $r$-th symmetric product of the rational curve with one node.
description: 26 pages, 4 figures. Added the structure of the biggest component of the moduli space of sheaves of degree 0 on a cycle of projective lines. Final version; to appear en IMRS (International Mathematics Research Notices 2009)
Robotic Template Library
Creators: name: Jelinek, Ales
name: Ligocki, Adam
name: Zalud, Ludek
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Robotic Template Library (RTL) is a set of tools for dealing with geometry and point cloud processing, especially in robotic applications. The software package covers basic objects such as vectors, line segments, quaternions, rigid transformations, etc., however, its main contribution lies in the more advanced modules: The segmentation module for batch or stream clustering of point clouds, the fast vectorization module for approximation of continuous point clouds by geometric objects of higher grade and the LaTeX export module enabling automated generation of high-quality visual outputs. It is a header-only library written in C++17, uses the Eigen library as a linear algebra back-end, and is designed with high computational performance in mind. RTL can be used in all robotic tasks such as motion planning, map building, object recognition and many others, but the point cloud processing utilities are general enough to be employed in any field touching object reconstruction and computer vision applications as well.
title: Frontmatter, Table of Contents, Preface, Workshop Organization
Creators: name: André, Étienne
name: Frehse, Goran
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2015
Subjects: subject: Frontmatter
subject: Table of Contents
subject: Preface
subject: Workshop Organization

description: Frontmatter, Table of Contents, Preface, Workshop Organization
description: OASIcs, Vol. 44, 2nd International Workshop on Synthesis of Complex Parameters (SynCoP'15), pages i-xii
Singularities of Affine Schubert Varieties
Creators: name: Kuttler, J.
name: Lakshmibai, V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 20G05

description: This paper studies the singularities of affine Schubert varieties in the affine Grassmannian (of type $\mathrm{A}^{(1)}_\ell$). For two classes of affine Schubert varieties, we determine the singular loci; and for one class, we also determine explicitly the tangent spaces at singular points. For a general affine Schubert variety, we give partial results on the singular locus.
description: 13 figures
Additional file 4 of Comparative effectiveness and acceptability of internet-based psychological interventions on depression in young people: a systematic review and network meta-analysis
Creators: name: Chen, Baijun
name: Li, Jialong
name: Qi, Yuxin
name: Mao, Honghui
name: Liu, Yihui
name: Wang, Wenting
Publisher: name: figshare
Year: 2025
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: Mental Health

description: Additional file 4. Risk of bias.
Hybrid Pointer Networks for Traveling Salesman Problems Optimization
Creators: name: Stohy, Ahmed
name: Abdelhakam, Heba-Tullah
name: Ali, Sayed
name: Elhenawy, Mohammed
name: Hassan, Abdallah A
name: Masoud, Mahmoud
name: Glaser, Sebastien
name: Rakotonirainy, Andry
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: In this work, a novel idea is presented for combinatorial optimization problems, a hybrid network, which results in a superior outcome. We applied this method to graph pointer networks [1], expanding its capabilities to a higher level. We proposed a hybrid pointer network (HPN) to solve the travelling salesman problem trained by reinforcement learning. Furthermore, HPN builds upon graph pointer networks which is an extension of pointer networks with an additional graph embedding layer. HPN outperforms the graph pointer network in solution quality due to the hybrid encoder, which provides our model with a verity encoding type, allowing our model to converge to a better policy. Our network significantly outperforms the original graph pointer network for small and large-scale problems increasing its performance for TSP50 from 5.959 to 5.706 without utilizing 2opt, Pointer networks, Attention model, and a wide range of models, producing results comparable to highly tuned and specialized algorithms. We make our data, models, and code publicly available [2].
The dynamics of iceberg drift
Creators: name: Napoleoni, Jean-Gerard Pascal
Publisher: name: University of British Columbia
Year: 2010

description: This thesis presents numerical models constructed for the prediction of iceberg drift,. The need for such models arises primarily from the need to protect drilling vessels offshore Labrador from the risk of collision with drifting icebergs. A discussion of the different possible drift models is presented. After commenting on the numerical results obtained with these models, a method is proposed for analyzing the past trajectory of an iceberg in order to determine coefficients necessary for predicting its drift.
A decomposition of waves in time series of data related to Covid-19, applied to study the role of Alpha variant in the spread of infection
Creators: name: Sparavigna, Amelia Carolina
Publisher: name: Zenodo
Year: 2021
Subjects: Time-series Decomposition
Weibull functions
kappa-Weibull functions
Threshold
Variants of Sars-CoV-2
Covid-19
Alpha Variant
B.1.1.7
Gaussian pdf
probability distribution function
power-law tail
heavy-tail

description: Here it is proposed a decomposition in components of the “waves” which appear in the time series of data related to Covid-19 pandemic. The decomposition is based on functions of κ-statistics; in particular the κ-Weibull is used. Fitted data are those of the “waves” ranging from August 2020 to April 2021 in the United Kingdom, from September 2020 to May 2021 in Ireland, and from September 2020 to June 2021 in Italy. For the United Kingdom, the time series of daily infection shows a wave composed by two peaks. Among the many factors involved in the spread of infection, it seems that, in driving the onset of the second peak, the main role was played by the emergence of Alpha variant of Sars-Cov-2. Therefore, the proposed decomposition of waves in the time series is applied to study the role of Alpha variant in the spread of infection. For what concerns data from Ireland, if we decompose the analysed “wave” in three components, we can observed that for one of them the role of the Alpha variant was relevant for sure. In the case of Italy, the effect is less evident, because it was spread over a larger time interval.
How to Integrate a Polynomial over a Simplex
Creators: name: Baldoni, Velleda
name: Berline, Nicole
name: De Loera, Jesus
name: Köppe, Matthias
name: Vergne, Michèle
Publisher: name: arXiv
Year: 2008
Subjects: subject: Metric Geometry (math.MG)
subject: Computational Complexity (cs.CC)
subject: Symbolic Computation (cs.SC)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: This paper settles the computational complexity of the problem of integrating a polynomial function f over a rational simplex. We prove that the problem is NP-hard for arbitrary polynomials via a generalization of a theorem of Motzkin and Straus. On the other hand, if the polynomial depends only on a fixed number of variables, while its degree and the dimension of the simplex are allowed to vary, we prove that integration can be done in polynomial time. As a consequence, for polynomials of fixed total degree, there is a polynomial time algorithm as well. We conclude the article with extensions to other polytopes, discussion of other available methods and experimental results.
description: Tables added with new experimental results. References added
Surveying principals and teachers: Methodological insights into the design of the REFORMED questionnaires
Creators: name: Levatino, Antonina
Publisher: name: Zenodo
Year: 2021
Subjects: School accountability
School autonomy
Test-based accountability
Performance-based accountability
Accountability policies
Policy enactment
Education reform
Survey methodology
Questionnaire design
Methodological approach
Standardized testing
Standardized tests

description: This note describes the methodology behind the design of the REFORMED Survey questionnaires. The Survey constitutes one of the main pillars of REFORMED RS2 which is aimed at exploring the intricate relationship between SAWA policies, contextual contingencies and policy enactment dynamics. The aim of this note is essentially twofold. On the one hand, it provides detailed information on the key concepts used in RS2 as well as the theoretical underpinnings and content of the questionnaires. On the other hand, it presents a detailed overview of the methodological steps followed to conceive and develop them. The information contained in this note is relevant for those researchers who want to use the data collected through the REFORMED Survey. It also provides useful methodological insights that can be valuable for those who want to undertake similar research endeavours.
Compressible Sherrington-Kirkpatrick spin-glass model
Creators: name: Liarte, D. B.
name: Salinas, S. R.
name: Yokoi, C. S. O.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We introduce a Sherrington-Kirkpatrick spin-glass model with the addition of elastic degrees of freedom. The problem is formulated in terms of an effective four-spin Hamiltonian in the pressure ensemble, which can be treated by the replica method. In the replica-symmetric approximation, we analyze the pressure-temperature phase diagram, and obtain expressions for the critical boundaries between the disordered and the ordered (spin-glass and ferromagnetic) phases. The second-order para-ferromagnetic border ends at a tricritical point, beyond which the transition becomes discontinuous. We use these results to make contact with the temperature-concentration phase diagrams of mixtures of hydrogen-bonded crystals.
description: 8 pages, 2 figures; added references, added content
Large-Amplitude Elastic Free-Surface Waves: Geometric Nonlinearity and Peakons
Creators: name: Forbes, Lawrence K.
name: Walters, Stephen J.
name: Reading, Anya M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: An instantaneous sub-surface disturbance in a two-dimensional elastic half-space is considered. The disturbance propagates through the elastic material until it reaches the free surface, after which it propagates out along the surface. In conventional theory, the free-surface conditions on the unknown surface are projected onto the flat plane $y = 0$, so that a linear model may be used. Here, however, we present a formulation that takes explicit account of the fact that the location of the free surface is unknown {\it a priori}, and we show how to solve this more difficult problem numerically. This reveals that, while conventional linearized theory gives an accurate account of the decaying waves that travel outwards along the surface, it can under-estimate the strength of the elastic rebound above the location of the disturbance. In some circumstances, the non-linear solution fails in finite time, due to the formation of a ``peakon'' at the free surface. We suggest that brittle failure of the elastic material might in practice be initiated at those times and locations.
description: 26 pages, 7 figures
The automorphism group of the free group of rank two is a CAT(0) group
Creators: name: Piggott, Adam
name: Ruane, Kim
name: Walsh, Genevieve S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20F65

description: We prove that the automorphism group of the braid group on four strands acts faithfully and geometrically on a CAT(0) 2-complex. This implies that the automorphism group of the free group of rank two acts faithfully and geometrically on a CAT(0) 2-complex, in contrast to the situation for rank three and above.
description: 7 pages, 2 figures. The manuscript has been modified in minor ways in accordance with a referee's recommendations, and a misattribution of the result "Aut F_2 is biautomatic" has been corrected
Additional file 5 of Comparative effectiveness and acceptability of internet-based psychological interventions on depression in young people: a systematic review and network meta-analysis
Creators: name: Chen, Baijun
name: Li, Jialong
name: Qi, Yuxin
name: Mao, Honghui
name: Liu, Yihui
name: Wang, Wenting
Publisher: name: figshare
Year: 2025
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: Mental Health

description: Additional file 5. Brooks-Gelman-Rubin results of effectiveness.
How a fake Kepler portrait became iconic
Creators: name: Shore, Steven N.
name: Pavlík, Václav
Publisher: name: arXiv
Year: 2021
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Physics Education (physics.ed-ph)
subject: Popular Physics (physics.pop-ph)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: For several decades a portrait of Johannes Kepler has been widely circulating among professional astronomers, scientific and academic institutions, and the general public. Despite its provenance and identification having been questioned in the early part of the last century, this painting has reached iconic status. We review its history from its first mention in the literature in the 1870s to a published but virtually unknown judgment of competent art experts of the 1920s that the work is in fact an early nineteenth century forgery. We display the painting in context with other more secure portraits and suggest that if it is based on anything, the painting may derive from the well known portrait from life of Michael Mästlin. This correction takes on certain urgency since 2021 is the 450th anniversary of Kepler's birth.
description: A few minor things were corrected (typos and page citations for the books), another figure was added along with the discussion. We've also added a supplementary note on the public display of the painting at the 1873 Vienna World's Fair. Conclusions are unchanged. To appear in an edited form in Readers' Forum, Physics Today (September 2021)
Application of Proper Asset Management Methodology and Technology in Defence Sector of Sri Lanka
Creators: name: Perera, Prasad
name: Nanayakkara, Samudaya
name: Perera, Asoka
Publisher: name: figshare
Year: 2021
Subjects: subject: 90505 Infrastructure Engineering and Asset Management
subject: FOS: Civil engineering

description: Asset Management is seen as a simple business operation by most of the entities, however modern era demands for complex methodologies to cater the arising optimization of Asset Management. More and more organizations around the globe are realizing the importance of proper Asset Management methodologies and use of technology.The Sri Lankan defence entities which are one of the largest components of government of Sri Lanka with an annual budget around 200 billion Sri Lankan Rupees, and owning hundreds of assets at their disposal use very traditional methods to manage the assets and their operations and maintenance. Most of the methodologies date back to the Second World War era where the British colonial forces introduced most of the operational procedures and methodologies. It is time to rethink and modernize the Asset Management methodology of the Defence entities in Sri Lanka.The modern world has seen Information Technology being used in most of the business areas. The Enterprise systems are typically the largest, most complex, and most challenging information systems implemented by firms, representing a significant departure from the individual and departmental information systems prevalent in the past by integrating the key functions and assisting better and timely decision making. The use of IT and Enterprise systems for defence entities in Sri Lanka is evaluated.With the use of new methodologies Asset Management of defence sector of Sri Lanka can be optimized while supply chain and the operational processes getting more efficient and effective.
The Red Sequence of High-Redshift Clusters: a Comparison with Cosmological Galaxy Formation Models
Creators: name: Menci, N.
name: Rosati, P.
name: Gobat, R.
name: Strazzullo, V.
name: Rettura, A.
name: Mei, S.
name: Demarco, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We compare the results from a semi-analytic model of galaxy formation with spectro-photometric observations of distant galaxy clusters observed in the range 0.8< z< 1.3. We investigate the properties of their red sequence (RS) galaxies and compare them with those of the field at the same redshift. In our model we find that i) a well-defined, narrow RS is obtained already by z= 1.2; this is found to be more populated than the field RS, analogously to what observed and predicted at z=0; ii) the predicted U-V rest-frame colors and scatter of the cluster RS at z=1.2 have average values of 1 and 0.15 respectively, with a cluster-to-cluster variance of 0.2 and 0.06, respectively. The scatter of the RS of cluster galaxies is around 5 times smaller than the corresponding field value; iii) when the RS galaxies are considered, the mass growth histories of field and cluster galaxies at z=1.2 are similar, with 90 % of the stellar mass of RS galaxies at z=1.2 already formed at cosmic times t=2.5 Gyr, and 50 % at t=1 Gyr; v) the predicted distribution of stellar ages of RS galaxies at z=1.2 peaks at 3.7 Gyr for both cluster and field populations; however, for the latter the distribution is significantly skewed toward lower ages. When compared with observations, the above findings show an overall consistency, although the average value 0.07 of the observed cluster RS scatter (U-V colors) at z=1.2 is smaller than the corresponding model central value. We discuss the physical origin and the significance of the above results in the framework of cosmological galaxy formation.
description: 14 pages, accepted for publication in ApJ. Updated one reference