cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Merotelic kinetochore orientation versus chromosome mono-orientation in the origin of lagging chromosomes in human primary cells
Creators: name: Daniela, Fioravanti
name: E D, Salmon
name: Daniela, Cimini
name: Francesca, Degrassi
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2002

description: Defects in chromosome segregation play a critical role in producing genomic instability and aneuploidy, which are associated with congenital diseases and carcinogenesis. We recently provided evidence from immunofluorescence and electron microscopy studies that merotelic kinetochore orientation is a major mechanism for lagging chromosomes during mitosis in PtK1 cells. Here we investigate whether human primary fibroblasts exhibit similar errors in chromosome segregation and if at least part of lagging chromosomes may arise in cells entering anaphase in the presence of mono-oriented chromosomes. By using in situ hybridization with alphoid probes to chromosome 7 and 11 we showed that loss of a single sister is much more frequent than loss of both sisters from the same chromosome in anatelophases from human primary fibroblasts released from a nocodazole-induced mitotic arrest, as predicted from merotelic orientation of single kinetochores. Furthermore, the lagging of pairs of separated sisters was higher than expected from random chance indicating that merotelic orientation of one sister may promote merotelic orientation of the other. Kinetochores of lagging chromosomes in anaphase human cells were found to be devoid of the mitotic checkpoint phosphoepitopes recognized by the 3F3/2 antibody, suggesting that they attached kinetochore microtubules prior to anaphase onset. Live cell imaging of H2B histone-GFP-transfected cells showed that cells with mono-oriented chromosomes never enter anaphase and that lagging chromosomes appear during anaphase after chromosome alignment occurs during metaphase. Thus, our results demonstrate that the mitotic checkpoint efficiently prevents the possible aneuploid burden due to mono-oriented chromosomes and that merotelic kinetochore orientation is a major limitation for accurate chromosome segregation and a potentially important mechanism of aneuploidy in human cells.
Two-stage multi-objective OPF for AC/DC grids with VSC-HVDC: Incorporating decisions analysis into optimization process
Creators: name: Li, Yang
name: Li, Yahui
name: Li, Guoqing
name: Zhao, Dongbo
name: Chen, Chen
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: A two-stage solution approach for solving the problem of multi-objective optimal power flow (MOPF) is proposed for hybrid AC/DC grids with VSC-HVDC. First, a MOPF model for hybrid AC/DC grids is built to coordinate the economy, voltage deviation and environmental benefits. Then, a two-stage solution approach, incorporating decision analysis into optimization process, is presented to solve the model. The first stage of the approach is consisted of a multi-objective particle swarm optimization algorithm with a hybrid coding scheme employed to find multiple Pareto-optimal solutions. The second stage will have the obtained solutions clustered into different groups using fuzzy c-means (FCM) clustering, and then the 'best' compromise solutions are obtained by calculating the priority memberships of the solutions belonging to the same groups via grey relation projection (GRP) method. The novelty of this approach lies primarily in incorporating the FCM-GRP based decisions analysis technique into MOPF studies, thereby assisting decision makers to automatically identify the 'best' operation points. The effectiveness of the proposed approach is verified based on the test results of the IEEE 14- and 300- bus systems.
description: Accepted by Energy
Novel localization and possible functions of cyclin E in early sea urchin development
Creators: name: Bradley J, Schnackenberg
name: William F, Marzluff
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2002

description: In somatic cells, cyclin E-cdk2 activity oscillates during the cell cycle and is required for the regulation of the G1/S transition. Cyclin E and its associated kinase activity remain constant throughout early sea urchin embryogenesis, consistent with reports from studies using several other embryonic systems. Here we have expanded these studies and show that cyclin E rapidly and selectively enters the sperm head after fertilization and remains concentrated in the male pronucleus until pronuclear fusion, at which time it disperses throughout the zygotic nucleus. We also show that cyclin E is not concentrated at the centrosomes but is associated with condensed chromosomes throughout mitosis for at least the first four cell cycles. Isolated mitotic spindles are enriched for cyclin E and cdk2, which are localized to the chromosomes. The chromosomal cyclin E is associated with active kinase during mitosis. We propose that cyclin E may play a role in the remodeling of the sperm head and re-licensing of the paternal genome after fertilization. Furthermore, cyclin E does not need to be degraded or dissociated from the chromosomes during mitosis; instead, it may be required on chromosomes during mitosis to immediately initiate the next round of DNA replication.
Rare radiative B decay to the orbitally excited K_2^*(1430) meson
Creators: name: Ebert, D.
name: Faustov, R. N.
name: Galkin, V. O.
name: Toki, H.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The exclusive rare radiative B meson decay to the orbitally excited tensor K_2^*(1430) meson is investigated in the framework of the relativistic quark model based on the quasipotential approach in quantum field theory. The calculated branching ratio BR(B --> K_2^*(1430)γ)=(1.7\pm 0.6)\times 10^{-5} as well as the ratio BR(B --> K_2^*(1430)γ)/BR(B --> K^*(892)γ)=0.38\pm 0.08 is found in a good agreement with recent experimental data from CLEO.
description: 10 pages, RevTeX
Bapalmuia confusa Kalb & Lucking
Creators: name: R, Jeanne dos
name: Silva, eis
name: Aptroot, André
name: E, Marcela
name: S, ugenia da
name: Cáceres, ilva
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Fungi
Ascomycota
Lecanoromycetes
Lecanorales
Pilocarpaceae
Bapalmuia
Bapalmuia confusa

description: Bapalmuia confusa Kalb & Lücking
NEW REPORT. — Parque Nacional de Brasília, on bark, leg. J.A.R. Silva, ISE 53245. New to Distríto Federal.
description: Published as part of R, Jeanne dos, Silva, eis, Aptroot, André, E, Marcela, S, ugenia da & Cáceres, ilva, 2023, Lichens from dry central Brazil: a checklist of lichenized fungi from Distríto Federal and Goiás, pp. 117-133 in Cryptogamie, Mycologie 20 (9) on page 118, DOI: 10.5252/cryptogamie-mycologie2023v44a9, http://zenodo.org/record/8434271
On the extraction of skewed parton distributions from experiment
Creators: name: Freund, Andreas
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we will discuss algorithms for extracting skewed parton distributions from experiment as well as the relevant process and experimental observable suitable for the extraction procedure.
description: 16 pages, 1 figure, uses revtex, final version. to be published in Phys. Lett. B
Regulation of focal complex composition and disassembly by the calcium-dependent protease calpain
Creators: name: The University of North Carolina at Chapel Hill University Libraries
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2002

description: Cell migration requires the regulated and dynamic turnover of adhesive complexes. We have previously demonstrated that the calcium-dependent protease, calpain, regulates the organization of adhesive complexes and cell detachment during cell migration. Evidence is now provided that inhibiting calpain through over-expression of the endogenous inhibitor of calpain, calpastatin, and pharmacological inhibitors results in an inhibition of adhesive complex disassembly with stabilization of GFP-vinculin and GFP/RFP-zyxin at the cell periphery. Calpain was also required for the microtubule-mediated turnover of adhesive complex sites after nocodazole wash-out, suggesting that calpain may mediate focal complex disassembly downstream of microtubules. Using dual imaging of RFP-zyxin and GFP-alpha-actinin, we observed a temporal and spatial relationship between alpha-actinin localization to focal contacts and the subsequent disassembly or translocation of RFP-zyxin containing focal complexes in areas of cell retraction. Calpain inhibition disrupted alpha-actinin localization to zyxin-containing focal contacts and focal complex disassembly or translocation to the cell center. In addition, disrupting alpha-actinin localization to focal complexes through expression of the alpha-actinin rod domain, but not the head domain, resulted in inhibition of focal adhesion disassembly similar to calpain inhibition. Our studies suggest a novel mechanism of action whereby calpain may modulate alpha-actinin localization into focal complexes and their subsequent disassembly or translocation.
Non-Perturbatively Improved Quenched Hadron Spectroscopy
Creators: name: Cucchieri, A.
name: Masetti, M.
name: Mendes, T.
name: Petronzio, R.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We make a quenched lattice simulation of hadron spectroscopy at beta=6.2 with the Wilson action non-perturbatively improved. With respect to the unimproved case, the estimate of the lattice spacing is less influenced by the choice of input hadron masses. We study also the effects of using an improved quark mass in the fits to the dependence of hadron masses upon quark masses.
description: 12 pages, including 5 postscript figures
Bathelium madreporiforme Trevis.
Creators: name: R, Jeanne dos
name: Silva, eis
name: Aptroot, André
name: E, Marcela
name: S, ugenia da
name: Cáceres, ilva
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Fungi
Ascomycota
Dothideomycetes
Trypetheliales
Trypetheliaceae
Bathelium
Bathelium madreporiforme

description: Bathelium madreporiforme (Eschw.) Trevis.
NEW REPORT. — Parque Nacional de Brasília, on bark, leg. J.A.R. Silva, ISE 53042. New to Distríto Federal.
description: Published as part of R, Jeanne dos, Silva, eis, Aptroot, André, E, Marcela, S, ugenia da & Cáceres, ilva, 2023, Lichens from dry central Brazil: a checklist of lichenized fungi from Distríto Federal and Goiás, pp. 117-133 in Cryptogamie, Mycologie 20 (9) on page 118, DOI: 10.5252/cryptogamie-mycologie2023v44a9, http://zenodo.org/record/8434271
One-Log Call Iterative Solution of the Colebrook Equation for Flow Friction Based on Pade Polynomials
Creators: name: Praks, Pavel
name: Brkic, Dejan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: The 80 year-old empirical Colebrook function, widely used as an informal standard for hydraulic resistance, relates implicitly the unknown flow friction factor, with the known Reynolds number and the known relative roughness of a pipe inner surface. It is based on logarithmic law in the form that captures the unknown flow friction factor in a way that it cannot be extracted analytically. As an alternative to the explicit approximations or to the iterative procedures that require at least a few evaluations of computationally expensive logarithmic function or non-integer powers, this paper offers an accurate and computationally cheap iterative algorithm based on Pade polynomials with only one log-call in total for the whole procedure (expensive log-calls are substituted with Pade polynomials in each iteration with the exception of the first). The proposed modification is computationally less demanding compared with the standard approaches of engineering practice, but does not influence the accuracy or the number of iterations required to reach the final balanced solution.
description: 12 pages, 2 figures, 2 tables
Identifying Relationships Among Sentences in Court Case Transcripts Using Discourse Relations
Creators: name: Ratnayaka, Gathika
name: Rupasinghe, Thejan
name: de Silva, Nisansa
name: Warushavithana, Menuka
name: Gamage, Viraj
name: Perera, Amal Shehan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Case Law has a significant impact on the proceedings of legal cases. Therefore, the information that can be obtained from previous court cases is valuable to lawyers and other legal officials when performing their duties. This paper describes a methodology of applying discourse relations between sentences when processing text documents related to the legal domain. In this study, we developed a mechanism to classify the relationships that can be observed among sentences in transcripts of United States court cases. First, we defined relationship types that can be observed between sentences in court case transcripts. Then we classified pairs of sentences according to the relationship type by combining a machine learning model and a rule-based approach. The results obtained through our system were evaluated using human judges. To the best of our knowledge, this is the first study where discourse relationships between sentences have been used to determine relationships among sentences in legal court case transcripts.
description: Conference: 2018 International Conference on Advances in ICT for Emerging Regions (ICTer)
Thermal bosonisation in the sine-Gordon and massive Thirring models
Creators: name: Nicola, A. Gomez
name: Steer, D. A.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study bosonisation in the massive Thirring and sine-Gordon models at finite temperature T and nonzero fermion chemical potential $μ$. For that purpose we use both canonical operator and path integral approaches, paying particular attention to the issues of thermal normal ordering and renormalisation. At T>0 and $μ=0$, the massive Thirring model bosonises to the sine-Gordon model with the same T=0 identification between coupling constants. We prove that not only the partition functions of the two models coincide, as was recently shown, but also that thermal averages of zero-charge operators can be identified. In particular, analysis of the point-split regularised fermion current then leads to the thermal equivalence between sine-Gordon kinks and Thirring fermions. At $μ\neq 0$, T>0 and working in perturbation theory about the massless Thirring model, we show that the bosonised theory is the sine-Gordon model plus an additional topological term which accounts for the existence of net fermion charge excitations (the fermions or the kinks) in the thermal bath. This result generalises one recently obtained for the massless case, and it is the two-dimensional version of the low-energy QCD chiral Lagrangian at finite baryon density.
description: 34 pages, Latex. No figures
Extended family of generalized Chaplygin gas models
Creators: name: Ferreira, V. M. C.
name: Avelino, P. P.
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The generalized Chaplygin gas is usually defined as a barotropic perfect fluid with an equation of state $p=-A ρ^{-α}$, where $ρ$ and $p$ are the proper energy density and pressure, respectively, and $A$ and $α$ are positive real parameters. It has been extensively studied in the literature as a quartessence prototype unifying dark matter and dark energy. Here, we consider an extended family of generalized Chaplygin gas models parameterized by three positive real parameters $A$, $α$ and $β$, which, for two specific choices of $β$ [$β=1$ and $β=\left(1+α\right)/(2α)$], is described by two different Lagrangians previously identified in the literature with the generalized Chaplygin gas. We show that, for $β> 1/2$, the linear stability conditions and the maximum value of the sound speed $c_s$ are regulated solely by $β$, with $0 \le c_s \le 1$ if $β\ge 1$. We further demonstrate that in the non-relativistic regime the standard equation of state $p=-A ρ^{-α}$ of the generalized Chaplygin gas is always recovered, while in the relativistic regime this is true only if $β=\left(1+α\right)/(2α)$. We present a regularization of the ($α\rightarrow 0$, $A \rightarrow \infty$) limit of the generalized Chaplygin gas, showing that it leads to a logarithmic Chaplygin gas model with an equation of state of the form $p = {\mathcal A} \ln\left(ρ/ρ_{*}\right)$, where ${\mathcal A}$ is a real parameter and $ρ_*>0$ is an arbitrary energy density. We finally derive its Lagrangian formulation.
description: 5 pages
Brigantiaea leucoxantha R. Sant. & Hafellner
Creators: name: R, Jeanne dos
name: Silva, eis
name: Aptroot, André
name: E, Marcela
name: S, ugenia da
name: Cáceres, ilva
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Fungi
Ascomycota
Lecanoromycetes
Teloschistales
Brigantieaceae
Brigantiaea
Brigantiaea leucoxantha

description: Brigantiaea leucoxantha (Spreng.) R.Sant. & Hafellner
NEW REPORT. — Parque Nacional de Brasília, on bark, leg. J.A.R. Silva, ISE 52529. New to Distríto Federal.
description: Published as part of R, Jeanne dos, Silva, eis, Aptroot, André, E, Marcela, S, ugenia da & Cáceres, ilva, 2023, Lichens from dry central Brazil: a checklist of lichenized fungi from Distríto Federal and Goiás, pp. 117-133 in Cryptogamie, Mycologie 20 (9) on page 118, DOI: 10.5252/cryptogamie-mycologie2023v44a9, http://zenodo.org/record/8434271
Numerical Renormalization-Group Study of Particle-Hole Symmetry Breaking in Two-Channel Kondo Problem : Effect of Repulsion between Conduction Electrons and Potential Scattering
Creators: name: Kusunose, H.
name: Miyake, K.
name: Shimizu, Y.
name: Sakai, O.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Particle-hole symmetry breaking perturbation in two-channel pseudospin Kondo problem is studied by the numerical renormalization-group method. It is shown that the repulsion between conduction electrons at the impurity site and the single particle potential are the relevant perturbations against the conventional non-Fermi liquid fixed point. Although the repulsion (potential) with realistic strength prevents the overscreening of pseudospin, it induces in turn a {\it real spin}, which is also overscreened again. Thus the {\it real spin} susceptibility becomes anomalous contrary to the conventional two-channel Kondo problem.
description: 4 pages (ReVTeX Ver. 3.0), 6 figures (available on request)
Optimal distributed generation planning in active distribution networks considering integration of energy storage
Creators: name: Li, Yang
name: Feng, Bo
name: Li, Guoqing
name: Qi, Junjian
name: Zhao, Dongbo
name: Mu, Yunfei
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: A two-stage optimization method is proposed for optimal distributed generation (DG) planning considering the integration of energy storage in this paper. The first stage determines the installation locations and the initial capacity of DGs using the well-known loss sensitivity factor (LSF) approach, and the second stage identifies the optimal installation capacities of DGs to maximize the investment benefits and system voltage stability and to minimize line losses. In the second stage, the multi-objective ant lion optimizer (MOALO) is first applied to obtain the Pareto-optimal solutions, and then the 'best' compromise solution is identified by calculating the priority memberships of each solution via grey relation projection (GRP) method, while finally, in order to address the uncertain outputs of DGs, energy storage devices are installed whose maximum outputs are determined with the use of chance-constrained programming. The test results on the PG&E 69-bus distribution system demonstrate that the proposed method is superior to other current state-of-the-art approaches, and that the integration of energy storage makes the DGs operate at their pre-designed rated capacities with the probability of at least 60% which is novel.
description: Accepted by Applied Energy
ANÁLISIS DEL PAPEL DE LAS CIBERCAMPAÑAS Y LAS REDES SOCIALES EN LAS ELECCIONES PRESIDENCIALES DEL 2010 EN COLOMBIA
Creators: name: Nava, Paola
Publisher: name: figshare
Year: 2018
Subjects: subject: 160503 Communications and Media Policy
subject: FOS: Political science
subject: 80503 Networking and Communications
subject: FOS: Computer and information sciences

description: Las nuevas tecnologías de comunicación están cambiando la forma de hacer campañas políticas en Colombia y en el mundo. Internet y las redes sociales se han convertido en un medio por excelencia para realizar proselitismo político. A través del cual las personas expresan sus opiniones, participan y son más activas en todo lo relacionado con la política. En los últimos años hemos visto como las cibercampañas han transformado el acontecer diario de las campañas políticas y las nuevas herramientas que ofrece Internet han permitido imponer un nuevo estilo dándole un giro a la forma de hacer política.
PULSAR-BASED ORBIT DETERMINATION FOR NAVIGATION IN A CISLUNAR COLD-START SCENARIO
Creators: name: Ross, Jillian Abigail
Publisher: name: Purdue University Graduate School
Year: 2025
Subjects: classificationCode: 400107
subject: Satellite, space vehicle and missile design and testing

description: A pulsar x-ray navigation approach for autonomous navigation in a cold-start scenario in cislunar space
Geo-Text Data and Data-Driven Geospatial Semantics
Creators: name: Hu, Yingjie
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computation and Language (cs.CL)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: Many datasets nowadays contain links between geographic locations and natural language texts. These links can be geotags, such as geotagged tweets or geotagged Wikipedia pages, in which location coordinates are explicitly attached to texts. These links can also be place mentions, such as those in news articles, travel blogs, or historical archives, in which texts are implicitly connected to the mentioned places. This kind of data is referred to as geo-text data. The availability of large amounts of geo-text data brings both challenges and opportunities. On the one hand, it is challenging to automatically process this kind of data due to the unstructured texts and the complex spatial footprints of some places. On the other hand, geo-text data offers unique research opportunities through the rich information contained in texts and the special links between texts and geography. As a result, geo-text data facilitates various studies especially those in data-driven geospatial semantics. This paper discusses geo-text data and related concepts. With a focus on data-driven research, this paper systematically reviews a large number of studies that have discovered multiple types of knowledge from geo-text data. Based on the literature review, a generalized workflow is extracted and key challenges for future work are discussed.
description: Geography Compass, 2018
It takes two (PIDs) to tango: first steps in developing data and scholarly inter-citation
Creators: name: Michaud, Geneviève
Publisher: name: Zenodo
Year: 2019
Subjects: RDA, Research Data, Data publication and Archiving, Persistent Identifiers

description: In July 2018, the french minister for Education and Research launched a National Plan for Open Science; this plan, among other measures, prescribes the development of "subject-based and discipline-specific data repositories", while "making open access dissemination mandatory for research data resulting from government-funded projects". Still, in 2019, Social Sciences and Humanities data centers' activities are assessed on the sole basis of publications citing a dataset curated and disseminated. Data sharing metrics are not taken into account as a standalone indicator. However, a growing number of studies emphasize virtuous mutual effects of opening scientific publications and opening research data. The Center for Socio Political Data (CDSP, created in 2006) of Sciences Po, partner of CESSDA service provider PROGEDO, is engaged in curating and disseminating research data for the Social Sciences. Historically managing a Nesstar repository, the CDSP was the first french data center to launch a Dataverse repository, in 2016. Scholarly publications repositories are evolving, particularly regarding related data access statements (DAS) and dataset citation policies. Jumping at the chance to enhance interoperability between data and scholarly publications repositories, we will describe our contribution to an institutional data citation guideline Inspired by Scholix (Scholarly Link Exchange) interoperability framework model, an RDA Work Group output. For the first time at the CDSP we want to take full advantage of IQSS Harvard Dataverse features, mingling with Datacite and DDI (Data Documentation Initiative) Metadata schemas.
title: A modular neurosymbolic approach for visual graph question answering
Creators: name: Eiter, Thomas
name: Higuera Ruiz, Nelson Nicolas
name: Oetsch, Johannes
Publisher: name: TU Wien
Year: 2023
Subjects: Neurosymbolic
Visual Question Answering

description: Images containing graph-based structures are a ubiquitous and popular form of data representation that, to the best of our knowledge, have not yet been considered in the domain of Visual Question Answering (VQA). We use CLEGR, a graph question answering dataset with a generator that synthetically produces vertex-labelled graphs that are inspired by metro networks. Structured information about stations and lines is provided, and the task is to answer natural language questions concerning such graphs. While symbolic methods suffice to solve this dataset, we consider the more challenging problem of taking images of the graphs instead of their symbolic representations as input. Our solution takes the form of a modular neurosymbolic model that combines the use of optical graph recognition for graph parsing, a pretrained optical character recognition neural network for parsing node labels, and answer-set programming, a popular logic-based approach to declarative problem solving, for reasoning. The implementation of the model achieves an overall average accuracy of 73% on the dataset, providing further evidence of the potential of modular neurosymbolic systems in solving complex VQA tasks, in particular, the use and control of pretrained models in this architecture.
Damping of the HERA effect in DIS?
Creators: name: Desgrolard, P.
name: Lengyel, A.
name: Martynov, E.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The drastic rise of the proton structure function F_2(x,Q^2) when the Björken variable x decreases, seen at HERA for a large span of Q^2, negative values for the 4-momentum transfer, may be damped when Q^2 increases beyond several hundreds GeV^2. A new data analysis and a comparison with recent models for the proton structure function is proposed to discuss this phenomenon in terms of the derivative \partial ln F_2(x,Q^2)/\partial ln(1/x).
description: 14 pages (LaTeX) including 7 figures, misprints are corrected
Proof of factorization for electroproduction of multiple mesons and exclusive $γ^* γ$ production of multiple hadrons
Creators: name: Freund, Andreas
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the following, we will present a generalization of the proof of factorization for electroproduction of vector mesons to the production of several mesons such as $π^+π^-$ and a proof of factorization for exclusive $γ^* γ$ production of several hadrons for example $p \bar p$ or $π^+π^-$ to all orders in perturbation theory up to power suppressed terms.
description: 16 pages, 5 figures, uses revtex, final version. to be published in Phys. Rev. D
Improving the Lattice QCD Hamiltonian
Creators: name: Luo, Xiang-Qian
name: Guo, Shuo-Hong
name: Kroeger, Helmut
name: Schuette, Dieter
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Improvement of the Hamiltonian in lattice gauge theory is considered. We give explicit expressions for classical improvement and discuss also quantum corrections.
description: 3 pages, Latex. Presented at Lattice 97: 15th International Symposium on Lattice Field Theory, Edinburgh, Scotland, 22-26 Jul 1997, to appear in Nucl. Phys. B(Proc. Suppl.)
MPEC 2024-U47 : 2022 HQ4
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Adhesion mechanics of graphene on textured substrates
Creators: name: Boddeti, Narasimha G
name: Long, Rong
name: Dunn, Martin L
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Graphene, the 2D form of carbon, has excellent mechanical, electrical and thermal properties and a variety of potential applications including NEMS, protective coatings, transparent electrodes in display devices and biological applications. Adhesion plays a key role in many of these applications. In addition, it has been proposed that the electronic properties of graphene can be affected by elastic deformation caused by adhesion of graphene to its substrate. In light of this, we present here a continuum mechanics based theoretical framework to understand the effect of nanoscale morphology of substrates on adhesion and mechanics of graphene. In the first part, we analyze the adhesion mechanics of graphene on 1 and 2D periodic corrugations. We carried out molecular statics simulations and found the results to be in good agreement with our theory. We modeled adhesive interactions surface forces described by Lennard-Jones 6-12 potential in both our analysis and simulations and in principle can be extended to any other interaction potential. The results show that graphene adheres conformally to substrates with large curvatures. We showed in principal that the theory developed here can be extended to substrates of arbitrary shapes that can be represented by a Fourier series. In the second part, we study the mechanics of peeling of graphene ribbons from 1D sinusoidally textured substrates. In the molecular statics simulations, we observed two key features in the peel mechanics of the ribbons: the ribbons slide over the substrate and undergo adhesion and peeling near the crack front in an oscillatory manner, the frequency of which reveals the wavelength of the underlying substrate. Our theory qualitatively captures these features of the peel mechanics and is general enough that it can be extended to other 2D materials like MoS2, BN etc and different kinds of interaction potentials.
description: 45 pages, 21 figures, published in IJSS, 2016
Efficient O($N$) divide-conquer method with localized natural orbitals
Creators: name: Ozaki, Taisuke
name: Fukuda, Masahiro
name: Jiang, Gengping
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: An efficient O($N$) divide-conquer (DC) method based on localized natural orbitals (LNOs) is presented for large-scale density functional theories (DFT) calculations of gapped and metallic systems. The LNOs are non-iteratively calculated by a low-rank approximation via a local eigendecomposition of a projection operator for the occupied space. Introducing LNOs to represent the long range region of a truncated cluster reduces the computational cost of the DC method while keeping computational accuracy. A series of benchmark calculations and high parallel efficiency in a multilevel parallelization clearly demonstrate that the O($N$) method enables us to perform large-scale simulations for a wide variety of materials including metals with sufficient accuracy in accordance with development of massively parallel computers.
description: 14 pages, 9 figures
Effective Action in Theory of Quasi-Ballistic Disordered Conductors
Creators: name: Muzykantskii, B. A.
name: Khmelnitskii, D. E.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We suggest an effective field theory for disorderd conductors, which describes quantum kinetics of ballistically propagating electrons. This theory contains non-linear $σ$-model \cite{Efetov} as its long wave limit.
description: RevTeX, 7 pages no figures (to be published in JETP Letters)
A BRITE view on the massive O-type supergiant V973 Scorpii: Hints towards internal gravity waves or subsurface convection zones
Creators: name: Ramiaramanantsoa, Tahina
name: Ratnasingam, Rathish
name: Shenar, Tomer
name: Moffat, Anthony F. J.
name: Rogers, Tamara M.
name: Popowicz, Adam
name: Kuschnig, Rainer
name: Pigulski, Andrzej
name: Handler, Gerald
name: Wade, Gregg A.
name: Zwintz, Konstanze
name: Weiss, Werner W.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Stochastically-triggered photospheric light variations reaching $\sim$$40$ mmag peak-to-valley amplitudes have been detected in the O8Iaf supergiant V973 Scorpii as the outcome of two months of high-precision time-resolved photometric observations with the BRIght Target Explorer (BRITE) nanosatellites. The amplitude spectrum of the time series photometry exhibits a pronounced broad bump in the low-frequency regime ($\lesssim$$0.9$ d$^{-1}$) where several prominent frequencies are detected. A time-frequency analysis of the observations reveals typical mode lifetimes of the order of $5-10$ days. The overall features of the observed brightness amplitude spectrum of V973 Sco match well with those extrapolated from two-dimensional hydrodynamical simulations of convectively-driven internal gravity waves randomly excited from deep in the convective cores of massive stars. An alternative or additional possible source of excitation from a subsurface convection zone needs to be explored in future theoretical investigations.
description: 17 pages, 12 figures, 3 tables; Monthly Notices of the Royal Astronomical Society (MNRAS), in press
$\bar d - \bar u$ asymmetry and semi-inclusive production of pions in DIS
Creators: name: Szczurek, A.
name: Uleshchenko, V.
name: Speth, J.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We investigate unambiguities in the extraction of the $\bar d - \bar u$ asymmetry from semi-inclusive production of pions in DIS. The role of several effects beyond the quark-parton model (QPM) which lead to $N_p^{π^+} \ne N_n^{π^+}$ and $N_p^{π^-} \ne N_n^{π^-}$ and may therefore cloud such an extraction is studied. The results are discussed in the context of the recent HERMES data. We find that the interaction of the resolved photon with the nucleon significantly modifies the observed $\bar d - \bar u$ asymmetry. The exclusive elastic production of $ρ$ mesons plays a similar role for the large-$z$ data sample. Our estimate shows a rather small effect of the spectator mechanism. Nuclear effects in the deuteron also look potentially important but are difficult to estimate quantitatively. Throughout the paper we make in addition several general remarks concerning semi-inclusive and exclusive production of mesons.
description: 47 pages, LaTeX with 19 eps figures
Soft Contributions to Hard Pion Photoproduction
Creators: name: Afanasev, Andrei
name: Carlson, Carl E.
name: Wahlquist, Christian
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Hard, or high transverse momentum, pion photoproduction can be a tool for probing the parton structure of the beam and target. We estimate the soft contributions to this process, with an eye toward delineating the region where perturbatively calculable processes dominate. Our soft process estimate is based on vector meson dominance and data based parameterizations of semiexclusive hadronic cross sections. We find that soft processes dominate in single pion photoproduction somewhat past 2 GeV transverse momentum at a few times 10 GeV incoming energy. The recent polarization asymmetry data is consistent with the perturbative asymmetry being diluted by polarization insensitive soft processes. Determining the polarized gluon distribution using hard pion photoproduction appears feasible with a few hundred GeV incoming energy (in the target rest frame).
description: 6 pages, 5 figures
B meson decay constant with the Wilson and Clover heavy quark actions
Creators: name: JLQCD Collaboration
name: Aoki, S.
name: Fukugita, M.
name: Hashimoto, S.
name: Ishizuka, N.
name: Iwasaki, Y.
name: Kanaya, K.
name: Kuramashi, Y.
name: Okawa, M.
name: Ukawa, A.
name: Yoshié, T.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present results of our quenched study of the B meson decay constant obtained with a parallel set of simulations with the Wilson and Clover actions at β=5.9, 6.1 and 6.3. Systematic errors associated with the large b-quark mass are analyzed within the Fermilab non-relativistic formalism. As our best estimate in the continuum limit we obtain $f_B=163 \pm 16 MeV$ and $f_{B_s}=175 \pm 18 MeV$ with the Clover action.
description: 3 pages, 3 figures, talk presented by S. Hashimoto at LATTICE97, Edinburgh, 22-26 July 1997
Bulbothrix apophysata Hale
Creators: name: R, Jeanne dos
name: Silva, eis
name: Aptroot, André
name: E, Marcela
name: S, ugenia da
name: Cáceres, ilva
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Fungi
Ascomycota
Lecanoromycetes
Lecanorales
Parmeliaceae
Bulbothrix
Bulbothrix apophysata

description: Bulbothrix apophysata (Hale & Kurok.) Hale
PREVIOUS REPORT. — Mistry (1998).
description: Published as part of R, Jeanne dos, Silva, eis, Aptroot, André, E, Marcela, S, ugenia da & Cáceres, ilva, 2023, Lichens from dry central Brazil: a checklist of lichenized fungi from Distríto Federal and Goiás, pp. 117-133 in Cryptogamie, Mycologie 20 (9) on page 118, DOI: 10.5252/cryptogamie-mycologie2023v44a9, http://zenodo.org/record/8434271
title: Towards the control of doubly curved active textiles through graded pre-stretching and 3D printing
Creators: name: Lettner, Sebastian
name: Palma, Marco
name: Baseta, Efstathia Eleni
Publisher: name: TU Wien
Year: 2024
Subjects: Active Textiles
Doubly-curved Shells
Digital Fabrication
Additive Manufacturing
Active Materials

description: The production of complex shell geometries with the aid of textile supports is of interest in various fields, from fashion design to architecture, and at various scales of application. Yet, digital fabrication methods addressing double-curved shells by means of pre-stretched textiles and 3D-printing currently lack solutions for systematically controlling the curvature of the fabricated components. We introduce two methods for activating and controlling the double curvature of square tile elements by means of a custom-designed digital fabrication set-up. The set-up consists of a standard 3D printer integrated with a bespoke numerically controlled actuator for textile pre-stretching. The first method couples a nonuniform pre-stretching of the textile and a uniform cross section of the 3D printed boundary. The second method involves the combination of a uniform pre-stretching and non-uniform cross-section across the tile boundary. We independently evaluate the two methods and compare them in terms of effectiveness and repeatability in the activation of the tile curvature, specifically focusing on the edge conditions of the fabricated tile components. Finally, we discuss the possibility for large-scale applications and the potential for further research.
Seeking CP Violating Couplings in ZZ Production at LEP2
Creators: name: Biebel, Jochen
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The effects of CP violating anomalous ZZZ and gammaZZ vertices in ZZ production are determined. We present the differential cross-section for e+e- -> ZZ with dependence on the spins of the Z bosons. It is shown that from the different spin combinations those with one longitudinally and one transversally polarized Z in the final state are the most sensitive to CP violating anomalous couplings.
description: 6 pages, Latex, 1 figure
title: Challenges for monocular 6D object pose estimation in robotics
Creators: name: Thalhammer, Stefan
name: Bauer, Dominik
name: Hönig, Peter
name: Weibel, Jean-Baptiste Nicolas
name: García-Rodríguez, José
name: Vincze, Markus
Publisher: name: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Year: 2024
Subjects: Object recognition
Pose Estimation
Robotics

description: Object pose estimation is a core perception task that enables, for example, object manipulation and scene understanding. The widely available, inexpensive and high-resolution RGB sensors and CNNs that allow for fast inference make monocular approaches especially well suited for robotics applications. We observe that previous surveys on establish the state of the art for varying modalities, single- and multi-view settings, and datasets and metrics that consider a multitude of applications. We argue, however, that those works' broad scope hinders the identification of open challenges that are specific to monocular approaches and the derivation of promising future challenges for their application in robotics. By providing a unified view on recent publications from both robotics and computer vision, we find that occlusion handling, pose representations, and formalizing and improving category-level pose estimation are still fundamental challenges that are highly relevant for robotics. Moreover, to further improve robotic performance, large object sets, novel objects, refractive materials, and uncertainty estimates are central, largely unsolved open challenges. In order to address them, ontological reasoning, deformability handling, scene-level reasoning, realistic datasets, and the ecological footprint of algorithms need to be improved.
Bulbothrix bulbochaeta Hale
Creators: name: R, Jeanne dos
name: Silva, eis
name: Aptroot, André
name: E, Marcela
name: S, ugenia da
name: Cáceres, ilva
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Fungi
Ascomycota
Lecanoromycetes
Lecanorales
Parmeliaceae
Bulbothrix
Bulbothrix bulbochaeta

description: Bulbothrix bulbochaeta (Hale) Hale
PREVIOUS REPORT. — Mistry (1998).
description: Published as part of R, Jeanne dos, Silva, eis, Aptroot, André, E, Marcela, S, ugenia da & Cáceres, ilva, 2023, Lichens from dry central Brazil: a checklist of lichenized fungi from Distríto Federal and Goiás, pp. 117-133 in Cryptogamie, Mycologie 20 (9) on page 118, DOI: 10.5252/cryptogamie-mycologie2023v44a9, http://zenodo.org/record/8434271
Interpreting Neural Population Activity During Feedback Motor Control
Creators: name: Golub, Matthew
Publisher: name: Carnegie Mellon University
Year: 2015
Subjects: subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The motor system routinely generates a multitude of fast, accurate, and elegant movements.
In large part, this capacity is enabled by closed-loop feedback control systems in the brain.
Brain-machine interfaces (BMIs), which translate neural activity into control signals for driving
prosthetic devices, also engage the brain’s feedback control systems and offer a promising
experimental paradigm for studying the neural basis of feedback motor control. Here, we address
both the engineering challenges facing current BMI systems and the basic science opportunities
afforded by them.
Previous studies have demonstrated reliable control of the direction of movement in cursorbased
BMI systems. However, control of movement speed has been notably deficient. We provide
an explanation for these observed difficulties based on neurophysiological studies of arm
reaching. These findings inspired our design of a novel BMI decoding algorithm, the speeddampening
Kalman filter (SDKF) that automatically slows the cursor upon detecting changes
in decoded movement direction. SDKF improved success rates by a factor of 1.7 relative to a
standard Kalman filter in a closed-loop BMI task requiring stable stops at targets.
Next, we transition toward leveraging the BMI paradigm for basic scientific studies of feedback
motor control. It is widely believed that the brain employs internal models to describe our
prior beliefs about how an effector responds to motor commands. We developed a statistical
framework for extracting a subject’s internal model from neural population activity. We discovered
that a mismatch between the actual BMI and the subjects internal model of the BMI explains
roughly 65% of movement errors. We also show that this internal model mismatch limits movement
speed dynamic range and may contribute toward the aforementioned known difficulties in
control of BMI movement speed.
Scikit-Multiflow: A Multi-output Streaming Framework
Creators: name: Montiel, Jacob
name: Read, Jesse
name: Bifet, Albert
name: Abdessalem, Talel
Publisher: name: arXiv
Year: 2018
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Scikit-multiflow is a multi-output/multi-label and stream data mining framework for the Python programming language. Conceived to serve as a platform to encourage democratization of stream learning research, it provides multiple state of the art methods for stream learning, stream generators and evaluators. scikit-multiflow builds upon popular open source frameworks including scikit-learn, MOA and MEKA. Development follows the FOSS principles and quality is enforced by complying with PEP8 guidelines and using continuous integration and automatic testing. The source code is publicly available at https://github.com/scikit-multiflow/scikit-multiflow.
description: 5 pages, Open Source Software