cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Introductory Learning Card for Research Integrity (What happened at LONA Science Centre?)
Creators: name: Priess-Buchheit, Julia
name: Häberlein, Lisa
name: Bourgeois-Doyle, Dick
Publisher: name: Zenodo
Year: 2021
Subjects: Research Integrity
Title story
LONA Science Centre

description: What happened at LONA Science Centre?, is accompanying learning material for the Path2Integrity learning cards. The story supports the learning progress to foster Research Integrity.
description: Funded by the European Commission, Grant Number 824488
Hierarchical generative models for star clusters from hydro-dynamical simulations
Creators: name: Torniamenti, Stefano
name: Pasquato, Mario
name: Di Cintio, Pierfrancesco
name: Ballone, Alessandro
name: Iorio, Giuliano
name: Artale, M. Celeste
name: Mapelli, Michela
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Star formation in molecular clouds is clumpy, hierarchically subclustered. Fractal structure also emerges in hydro-dynamical simulations of star-forming clouds. Simulating the formation of realistic star clusters with hydro-dynamical simulations is a computational challenge, considering that only the statistically averaged results of large batches of simulations are reliable, due to the chaotic nature of the gravitational N-body problem. While large sets of initial conditions for N-body runs can be produced by hydro-dynamical simulations of star formation, this is prohibitively expensive in terms of computational time. Here we address this issue by introducing a new technique for generating many sets of new initial conditions from a given set of star masses, positions and velocities from a hydro-dynamical simulation. We use hierarchical clustering in phase space to learn a tree representation of the spatial and kinematic relations between stars. This constitutes the basis for the random generation of new sets of stars which share the same clustering structure of the original ones but have individually different masses, positions, and velocities. We apply this method to the output of a number of hydro-dynamical star-formation simulations, comparing the generated initial conditions to the original ones through a series of quantitative tests, including comparing mass and velocity distributions and fractal dimension. Finally, we evolve both the original and the generated star clusters using a direct N-body code, obtaining a qualitatively similar evolution.
description: Updated version of the manuscript: "Seeing the forest for the trees: hierarchical generative models for star clusters from hydro-dynamical simulations". 15 pages, 15 figures, 2 tables. Comments welcome
Persistent Cell Motion in the Absence of External Signals: A Search Strategy for Eukaryotic Cells
Creators: name: Li, Liang
name: Norrelykke, Simon F.
name: Cox, Edward C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Cell Behavior (q-bio.CB)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: Eukaryotic cells are large enough to detect signals and then orient to them by differentiating the signal strength across the length and breadth of the cell. Amoebae, fibroblasts, neutrophils and growth cones all behave in this way. Little is known however about cell motion and searching behavior in the absence of a signal. Is individual cell motion best characterized as a random walk? Do individual cells have a search strategy when they are beyond the range of the signal they would otherwise move toward? Here we ask if single, isolated, Dictyostelium and Polysphondylium amoebae bias their motion in the absence of external cues. We placed single well-isolated Dictyostelium and Polysphondylium cells on a nutrient-free agar surface and followed them at 10 sec intervals for ~10 hr, then analyzed their motion with respect to velocity, turning angle, persistence length, and persistence time, comparing the results to the expectation for a variety of different types of random motion. We find that amoeboid behavior is well described by a special kind of random motion: Amoebae show a long persistence time (~10 min) beyond which they start to lose their direction; they move forward in a zig-zag manner; and they make turns every 1-2 min on average. They bias their motion by remembering the last turn and turning away from it. Interpreting the motion as consisting of runs and turns, the duration of a run and the amplitude of a turn are both found to be exponentially distributed. We show that this behavior greatly improves their chances of finding a target relative to performing a random walk. We believe that other eukaryotic cells may employ a strategy similar to Dictyostelium when seeking conditions or signal sources not yet within range of their detection system.
description: 15 pages, 11 figures, accepted for publication in PLOS One
VET: Identifying and Avoiding UI Exploration Tarpits
Creators: name: Wang, Wenyu
name: Yang, Wei
name: Xu, Tianyin
name: Xie, Tao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Despite over a decade of research, it is still challenging for mobile UI testing tools to achieve satisfactory effectiveness, especially on industrial apps with rich features and large code bases. Our experiences suggest that existing mobile UI testing tools are prone to exploration tarpits, where the tools get stuck with a small fraction of app functionalities for an extensive amount of time. For example, a tool logs out an app at early stages without being able to log back in, and since then the tool gets stuck with exploring the app's pre-login functionalities (i.e., exploration tarpits) instead of its main functionalities. While tool vendors/users can manually hardcode rules for the tools to avoid specific exploration tarpits, these rules can hardly generalize, being fragile in face of diverted testing environments and fast app iterations. To identify and resolve exploration tarpits, we propose VET, a general approach including a supporting system for the given specific Android UI testing tool on the given specific app under test (AUT). VET runs the tool on the AUT for some time and records UI traces, based on which VET identifies exploration tarpits by recognizing their patterns in the UI traces. VET then pinpoints the actions (e.g., clicking logout) or the screens that lead to or exhibit exploration tarpits. In subsequent test runs, VET guides the testing tool to prevent or recover from exploration tarpits. From our evaluation with state-of-the-art Android UI testing tools on popular industrial apps, VET identifies exploration tarpits that cost up to 98.6% testing time budget. These exploration tarpits reveal not only limitations in UI exploration strategies but also defects in tool implementations. VET automatically addresses the identified exploration tarpits, enabling each evaluated tool to achieve higher code coverage and improve crash-triggering capabilities.
Braneworlds, Conformal Fields and the Gravitons
Creators: name: Neves, Rui
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the dynamics of Randall-Sundrum AdS5 braneworlds with 5-dimensional conformal matter fields. In the scenario with a compact fifth dimension the class of conformal fields with weight -4 is associated with exact 5-dimensional warped geometries which are stable under radion field perturbations and describe on the brane the dynamics of inhomogeneous dust, generalized dark radiation and homogeneous polytropic dark energy. We analyse the graviton mode flutuations around this class of background solutions and determine their mass eigenvalues and wavefunctions from a Sturm-Liouville problem. We show that the localization of gravity is not sharp enough for large mass hierarchies to be generated. We also discuss the physical bounds imposed by experiments in particle physics, in astrophysics and in precise measurements of the low energy gravitational interaction.
description: LaTeX, 9 pages, 2 figures. Based on talk given in the Second International Conference on Quantum Theories and the Renormalization Group in Gravity and Cosmology, CSIC and University of Barcelona, Barcelona, Spain, 11-15 July 2006. Submitted to be published in the Conference Proceedings, J. Phys. A: Math. Gen
Orbital Frustration and Emergent Flat Bands
Creators: name: Zhang, Wenjuan
name: Addison, Zachariah
name: Trivedi, Nandini
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We expand the concept of frustration in Mott insulators and quantum spin liquids to metals with flat bands. We show that when inter-orbital hopping $t_2$ dominates over intra-orbital hopping $t_1$, in a multiband system with strong spin-orbit coupling $λ$, electronic states with a narrow bandwidth $W\sim t_2^2/λ$ are formed compared to a bandwidth of order $t_1$ for intra-orbital hopping. We demonstrate the evolution of the electronic structure, Berry phase distributions for time-reversal and inversion breaking cases, and their imprint on the optical absorption, in a tight binding model of $d$-orbital hopping on a honeycomb lattice. Going beyond quantum Hall effect and twisted bilayer graphene, we provide an alternative mechanism and a richer materials platform for achieving flat bands poised at the brink of instabilities toward novel correlated and fractionalized metallic phases.
Large Ca Isotope Effect in CaC6
Creators: name: Hinks, D. G.
name: Rosenmann, D.
name: Claus, H.
name: Bailey, M. S.
name: Jorgensen, J. D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have measured the Ca isotope effect in the newly discovered superconductor CaC6. The isotope effect coefficient is 0.50(7). If one assumes that this material is a conventional electron-phonon coupled superconductor, this result shows that the superconductivity is dominated by coupling of the electrons by Ca phonon modes and that C phonons contribute very little. Thus, in contrast to MgB2, where phonons in the B layers are responsible for the superconductivity, in CaC6 the phonons are primarily modes of the intercalated Ca.
description: 11 pages including 2 Figures
Perspectiva de los tratados bilaterales de arbitraje en Colombia : viabilidad y desafíos
Creators: name: Castaño Melo, María Camila
Publisher: name: Universidad Externado de Colombia. Facultad de Derecho
Year: 2024
Subjects: subject: Arbitramento internacional -- Aspectos jurídicos
subject: Arbitramento comercial -- Aspectos jurídicos – Colombia
subject: Derecho internacional -- Aspectos jurídicos
subject: Derecho comercial -- Aspectos jurídicos – Colombia
subject: Administración de justicia -- Aspectos jurídicos
subject: Laudo arbitral
subject: Solución de conflictos
subject: Tratados bilaterales de arbitraje
subject: Arbitraje comercial
subject: Arbitraje de inversión
subject: PYMES

description: ¿Qué puede aprender el arbitraje comercial internacional del arbitraje de inversión? Intentando resolver esta pregunta, Gary Born propuso los Tratados Bilaterales de Arbitraje (TBA o BAT por sus siglas en inglés). Los TBA son tratados por medio de los cuales dos Estados pactan que una serie de controversias de carácter comercial, que surjan entre sus nacionales, serán resueltas vía arbitraje. Al día de hoy, no se ha celebrado ningún TBA. Lo más cercano a su implementación ha sido un borrador de modelo creado por Gary Born. ¿Por qué estudiar una clase de tratados que aún no existe? El enfoque principal de la propuesta son los países en vía de desarrollo y las PYMES, como Colombia. La propuesta de esta tesis es realizar una primera aproximación sobre la conveniencia de este tipo de tratados en nuestro país. Para ello, se examinaron algunos conceptos estructurales del ordenamiento jurídico. Posteriormente, se analizó la incidencia concreta de los BAT’s, comparando sus ventajas y desventajas, para concluir que sí podría ser una propuesta interesante para Colombia, sin dejar de lado algunos puntos sobre los que se deberá prestar especial atención
description: What can international commercial arbitration learn from investment arbitration? In an attempt to answer this question, Gary Born proposed Bilateral Arbitration Treaties (BATs). BATs are treaties through which two States agree that a series of commercial disputes arising between their nationals will be resolved via arbitration. To date, no BAT has been concluded. The closest to its implementation has been a draft model created by Gary Born. Why study a type of treaty that does not yet exist? The main focus of the proposal is developing countries and SMEs, such as Colombia. The proposal of this thesis is to make a first approach on the convenience of this type of treaties in our country. For this, some structural concepts of the legal system were examined. Subsequently, the concrete incidence of BATs was analyzed, comparing their advantages and disadvantages, to conclude that it could indeed be an interesting proposal for Colombia, without neglecting some points that should be given special attention.
Women negotiating the local-global interface: cosmetics in Singapore
Creators: name: Griffiths, Catherine Jane
Publisher: name: University of British Columbia
Year: 2009

description: This thesis is concerned with the negotiations that Singapore women make as they traverse an ever-changing landscape that is caught in the local-global dialectic. Through field study and archival research the author investigates the effects of the globalization of the economy on the local practices of women. This thesis includes the global influences of the international division of labour, consumer culture and the media. Balancing the global is the local controls of the Singapore government, through various social mechanisms. The social landscape of Singapore and women’s position in the landscape are central to the argument that women are especially affected by the globalization and the local controls. The multiple roles women play as they adapt to rapidly changing images of femininity and womanhood are discussed in the context of the local and the global through the cosmetics industry and the use of cosmetics. The agency of women is discussed as women were found to devise different looks to adapt to the many roles they are asked to play in their daily experiences. Women actively seek out methods to accommodate the changing social landscape in Singapore and cosmetics is one way they take control of their femininity as Singapore experiences the local-global dialectic.
Moving the epidemic tipping point through topologically targeted social distancing
Creators: name: Ansari, Sara
name: Anvari, Mehrnaz
name: Pfeffer, Oskar
name: Molkenthin, Nora
name: Hellmann, Frank
name: Heitzig, Jobst
name: Kurths, Juergen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The epidemic threshold of a social system is the ratio of infection and recovery rate above which a disease spreading in it becomes an epidemic. In the absence of pharmaceutical interventions (i.e. vaccines), the only way to control a given disease is to move this threshold by non-pharmaceutical interventions like social distancing, past the epidemic threshold corresponding to the disease, thereby tipping the system from epidemic into a non-epidemic regime. Modeling the disease as a spreading process on a social graph, social distancing can be modeled by removing some of the graphs links. It has been conjectured that the largest eigenvalue of the adjacency matrix of the resulting graph corresponds to the systems epidemic threshold. Here we use a Markov chain Monte Carlo (MCMC) method to study those link removals that do well at reducing the largest eigenvalue of the adjacency matrix. The MCMC method generates samples from the relative canonical network ensemble with a defined expectation value of $λ_{max}$. We call this the "well-controlling network ensemble" (WCNE) and compare its structure to randomly thinned networks with the same link density. We observe that networks in the WCNE tend to be more homogeneous in the degree distribution and use this insight to define two ad-hoc removal strategies, which also substantially reduce the largest eigenvalue. A targeted removal of 80\% of links can be as effective as a random removal of 90\%, leaving individuals with twice as many contacts.
Efficient prediction for linear and nonlinear autoregressive models
Creators: name: Müller, Ursula U.
name: Schick, Anton
name: Wefelmeyer, Wolfgang
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62M20 (Primary) 62G05, 62G20, 62M05, 62M10 (Secondary)

description: Conditional expectations given past observations in stationary time series are usually estimated directly by kernel estimators, or by plugging in kernel estimators for transition densities. We show that, for linear and nonlinear autoregressive models driven by independent innovations, appropriate smoothed and weighted von Mises statistics of residuals estimate conditional expectations at better parametric rates and are asymptotically efficient. The proof is based on a uniform stochastic expansion for smoothed and weighted von Mises processes of residuals. We consider, in particular, estimation of conditional distribution functions and of conditional quantile functions.
description: Published at http://dx.doi.org/10.1214/009053606000000812 in the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Programa plan padrinos Laax Service
Creators: name: Yasnó, Jacqueline
name: Correa, Juan Sebastián
Publisher: name: Universidad Externado de Colombia
Year: 2024
Subjects: subject: Mercadeo - Aspectos socioeconómicos
subject: Estructura organizacional - Estudios de caso
subject: Consumidores - Actitudes
subject: Laax Service
subject: Mercadeo
subject: Logística
subject: Bodega
subject: Zona

description: Se llevó a cabo un análisis interno y externo en la empresa Laax Service, considerando diversos aspectos relevantes que impactan la compañía. De este análisis, se observó que la empresa carece de una estructura sólida en su área comercial y de marketing. En respuesta a esta observación, se propusieron estrategias de marketing con el objetivo de mejorar el reconocimiento de la marca, obtención de nuevos clientes y fidelización de freelancer.
description: An internal and external analysis was conducted at Laax Service, considering different relevant aspects that impact the company. From this analysis, it was observed that the company lacks a solid structure in its commercial and marketing area. In response to this observation, marketing strategies were proposed with the goal of improving brand recognition, acquiring new customers, and retaining freelancers.
Frequency chimera state induced by differing dynamical timescales
Creators: name: Kachhara, Sneha
name: Ambika, G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: We report the occurrence of a self-emerging frequency chimera state in spatially extended systems of coupled oscillators, where the coherence and incoherence are defined with respect to the emergent frequency of the oscillations. This is generated by the local coupling among nonlinear oscillators evolving under differing dynamical timescales starting from random initial conditions. We show how they self-organize to structured patterns with spatial domains of coherence that are in frequency synchronization, coexisting with domains that are incoherent in frequencies. Our study has relevance in understanding such patterns observed in real-world systems like neuronal systems, power grids, social and ecological networks, where differing dynamical timescales is natural and realistic amongthe interacting systems.
description: 9 pages, 10 figures
A Landscape Analysis of Constraint Satisfaction Problems
Creators: name: Krzakala, Florent
name: Kurchan, Jorge
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Computational Complexity (cs.CC)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We discuss an analysis of Constraint Satisfaction problems, such as Sphere Packing, K-SAT and Graph Coloring, in terms of an effective energy landscape. Several intriguing geometrical properties of the solution space become in this light familiar in terms of the well-studied ones of rugged (glassy) energy landscapes. A `benchmark' algorithm naturally suggested by this construction finds solutions in polynomial time up to a point beyond the `clustering' and in some cases even the `thermodynamic' transitions. This point has a simple geometric meaning and can be in principle determined with standard Statistical Mechanical methods, thus pushing the analytic bound up to which problems are guaranteed to be easy. We illustrate this for the graph three and four-coloring problem. For Packing problems the present discussion allows to better characterize the `J-point', proposed as a systematic definition of Random Close Packing, and to place it in the context of other theories of glasses.
description: 17 pages, 69 citations, 12 figures
GERONTE Initial Plan for Exploitation and Dissemination of Results (PEDR)
Creators: name: Bacles, CFE
name: Davis, P
Publisher: name: Zenodo
Year: 2021
Subjects: Project management, H2020, PEDR, Project outputs, Dissemination

description: The Plan for the Exploitation and Dissemination of Results (PEDR) is a mandatory document of Horizon 2020 Research and Innovation Actions. The PEDR summarises the consortium’s strategy and concrete action to disseminate, exploit and protect the foreground generated by the GERONTE project. This document is the initial PEDR drafted in the first six months of the implementation of the GERONTE project. Updates will be published as necessary during the lifetime of the project The PEDR will guide the consortium’s activities to stay within the GERONTE project’s framework, act as a tool to set precise strategy, and forecast actions to be implemented in order to protect, disseminate and exploit the project’s results. This document identifies the dissemination activities planned for the project’s term; the expected achievements; and the prospective business opportunities that GERONTE will generate and that should be exploited to maximise the project’s value. It also identifies the audience (patients, carers, clinicians, and the relevant associations) that will benefit from GERONTE’s result and accordingly should be targeted.
Tree Automata and Essential Subtrees
Creators: name: Shtrakov, Slavcho
Publisher: name: arXiv
Year: 2007
Subjects: subject: Computational Complexity (cs.CC)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences
subject: F.1.1; F.1.2

description: We introduce essential subtrees for terms (trees) and tree automata . There are some results concerning independent sets of subtrees and separable sets for a tree and an automaton.
description: 9 pages, 2 figures, Sixth International Conference on Discrete Mathematics and Applications, Bansko, 2001
Exotic Final States in the $φ^8$ Multi-Kink Collisions
Creators: name: Gani, Vakhid A.
name: Marjaneh, Aliakbar Moradi
name: Javidan, Kurosh
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We study final states in the scattering of kinks and antikinks of the $φ^8$ field-theoretic model. We use the initial conditions in the form of two, three or four static or moving kinks. In the numerical experiments we observe a number of different processes such as emergence of static and moving oscillons, change of the kink's topological sector, scattering of an oscillon by a kink, production of kink-antikink pairs in oscillon-oscillon collisions. In antikink-kink collisions for asymmetric kinks, we found resonance phenomena -- escape windows.
description: 13 pages, 7 figures; v2: final/published version
Systematic Review of Effective Library Instruction for Business Students
Creators: Gareau-Brennan, Céline
Kung, Janice
Publisher: name: University of Alberta Library
Year: 2021

The most successful library teaching strategies for post-secondary business programs have yet to be determined. The aim of this systematic review is to investigate the effectiveness of library instruction (with a focus on pedagogy) in business undergraduate and graduate programs. The researchers searched seven databases, selected studies that met the inclusion criteria, and extracted data following PRISMA guidelines. To achieve the study’s primary objective, the researchers included any library educational intervention in a business program conducted by librarians or library staff. The quality of included studies was evaluated based on a modified instrument designed to critically appraise educational interventions. The instrument consists of nine questions that relate to content, context, outcomes, study design, and methods. Thirty-five studies met the inclusion criteria and data was extracted based on subject area, content coverage, mode of instruction (in-person vs virtual), faculty collaboration, assessment strategies, and library educational interventions used to teach business students. Common educational interventions included hands-on activities, live demonstrations, active learning, group work, and lectures. The most compelling strategies include active learning, providing engaging sessions (e.g. flipped classroom), and faculty collaboration. Since most of the studies did not state clear learning outcomes, it is difficult to ascertain what type of interventions were truly effective in improving library sessions.
Pure Spinor Strings in TsT Deformed Background
Creators: name: Grassi, P. A.
name: Kluson, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider pure spinor strings that propagate in the background generated by a sequence of TsT transformations. We use the fact that U(1) isometry variables of TsT-transformed background are related to the isometry variables of the initial background in the universal way that is independent of the details of the background. We will argue that after redefinitions of pure spinors and the fermionic variables we can construct pure spinor action with manifest U(1) isometry. This fact implies that the pure spinor string in TsT-transformed background is described by pure spinor string in the original background where world-volume modes are subject to twisted boundary conditions. We will argue that these twisted boundary conditions generally prevent to prove the quantum conformal invariance of the pure spinor string in AdS_5 x S^5 background. We determine the conditions under which this quantum conformal invariance can be proved. We also determine the Lax pair for pure spinor strings in the TsT-transformed background.
description: 35 pages, no figures
Text-to-hashtag Generation using Seq2seq Learning
Creators: name: Camargo, Augusto
name: Carvalho, Wesley
name: Peressim, Felipe
name: Barzilay, Alan
name: Finger, Marcelo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In this paper, we studied whether models based on BiLSTM and BERT can predict hashtags in Brazilian Portuguese for Ecommerce websites. Hashtags have a sizable financial impact on Ecommerce. We processed a corpus of Ecommerce reviews as inputs, and predicted hashtags as outputs. We evaluated the results using four quantitative metrics: NIST, BLEU, METEOR and a crowdsourced score. A word cloud was used as a qualitative metric. While all computer-generated metrics (NIST, BLEU and METEOR) indicated bad results, the crowdsourced results produced amazing scores. We concluded that the texts predicted by the neural networks are very promising for use as hashtags for products on Ecommerce websites. The code for this work is available at https://github.com/augustocamargo/text-to-hashtag.
Integral Field Unit Observations of NGC 891: Kinematics of the Diffuse Ionized Gas Halo
Creators: name: Heald, George H.
name: Rand, Richard J.
name: Benjamin, Robert A.
name: Bershady, Matthew A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present high and moderate spectral resolution spectroscopy of diffuse ionized gas (DIG) emission in the halo of NGC 891. The data were obtained with the SparsePak integral field unit at the WIYN Observatory. The wavelength coverage includes the [NII]6548,6583, Halpha, and [SII]6716,6731 emission lines. Position-velocity (PV) diagrams, constructed using spectra extracted from four SparsePak pointings in the halo, are used to examine the kinematics of the DIG. Using two independent methods, a vertical gradient in azimuthal velocity is found to be present in the northeast quadrant of the halo, with magnitude approximately 15-18 km/s/kpc, in agreement with results from HI observations. The kinematics of the DIG suggest that this gradient begins at approximately 1 kpc above the midplane. In another part of the halo, the southeast quadrant, the kinematics are markedly different, and suggest rotation at about 175 km/s, much slower than the disk but with no vertical gradient. We utilize an entirely ballistic model of disk-halo flow in an attempt to reproduce the kinematics observed in the northeast quadrant. Analysis shows that the velocity gradient predicted by the ballistic model is far too shallow. Based on intensity cuts made parallel to the major axis in the ballistic model and an Halpha image of NGC 891 from the literature, we conclude that the DIG halo is much more centrally concentrated than the model, suggesting that hydrodynamics dominate over ballistic motion in shaping the density structure of the halo. Velocity dispersion measurements along the minor axis of NGC 891 seem to indicate a lack of radial motions in the halo, but the uncertainties do not allow us to set firm limits.
description: 31 pages, 10 figures. Accepted for publication in the Astrophysical Journal
Exploring the infrared gluon and ghost propagators using large asymmetric lattices
Creators: name: Oliveira, O.
name: Silva, P. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We report on the infrared limit of the quenched lattice Landau gauge gluon propagator computed from large asymmetric lattices. In particular, the compatibility of the pure power law infrared solution $(q^2)^{2κ}$ of the Dyson-Schwinger equations is investigated and the exponent $κ$ is measured. The lattice data favours $κ\sim 0.52$, which would imply a vanishing zero momentum gluon propagator as predicted by the Kugo-Ojima confinement mechanism and the Zwanziger horizon condition. Results for the ghost propagator and for the running coupling constant are shown.
description: 7 pages, 13 figures, proceedings of "Infrared QCD in Rio", Rio de Janeiro, 5-9 June, 2006; minor changes, figure 1 now includes ghost data
Multiscale Modeling of a Nanoelectromechanical Shuttle
Creators: name: Huldt, C.
name: Kinaret, J. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this article, we report a theoretical analysis of a nanoelectromechanical shuttle based on a multiscale model that combines microscopic electronic structure data with macroscopic dynamics. The microscopic part utilizes a (static) density functional description to obtain the energy levels and orbitals of the shuttling particle together with the forces acting on the particle. The macroscopic part combines stochastic charge dynamics that incorporates the microscopically evaluated tunneling rates with a Newtonian dynamics. We have applied the multiscale model to describe the shuttling of a single copper atom between two gold-like jellium electrodes. We find that energy spectrum and particle surface interaction greatly influence shuttling dynamics; in the specific example that we studied the shuttling is found to involve only charge states Q=0 and Q=+e. The system is found to exhibit two quasi-stable shuttling modes, a fundamental one and an excited one with a larger amplitude of mechanical motion, with random transitions between them.
description: 9 pages, 9 figures
Endoplasmic Reticulum Lumenal Indicators in Drosophila Reveal Effects of HSP-Related Mutations on Endoplasmic Reticulum Calcium Dynamics
Creators: name: Oliva, Megan K.
name: Pérez-Moreno, Juan José
name: O’Shaughnessy, Jillian
name: Wardill, Trevor J.
name: O’Kane, Cahir J.
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: Neuroscience
hereditary spastic paraplegia
endoplasmic reticulum
calcium imaging
Drosophila
neurodegeneration

description: Genes for endoplasmic reticulum (ER)-shaping proteins are among the most commonly mutated in hereditary spastic paraplegia (HSP). Mutation of these genes in model organisms can lead to disruption of the ER network. To investigate how the physiological roles of the ER might be affected by such disruption, we developed tools to interrogate its Ca2+ signaling function. We generated GAL4-driven Ca2+ sensors targeted to the ER lumen, to record ER Ca2+ fluxes in identified Drosophila neurons. Using GAL4 lines specific for Type Ib or Type Is larval motor neurons, we compared the responses of different lumenal indicators to electrical stimulation, in axons and presynaptic terminals. The most effective sensor, ER-GCaMP6-210, had a Ca2+ affinity close to the expected ER lumenal concentration. Repetitive nerve stimulation generally showed a transient increase of lumenal Ca2+ in both the axon and presynaptic terminals. Mutants lacking neuronal reticulon and REEP proteins, homologs of human HSP proteins, showed a larger ER lumenal evoked response compared to wild type; we propose mechanisms by which this phenotype could lead to neuronal dysfunction or degeneration. Our lines are useful additions to a Drosophila Ca2+ imaging toolkit, to explore the physiological roles of ER, and its pathophysiological roles in HSP and in axon degeneration more broadly.
Elliptic flow in transport theory and hydrodynamics
Creators: name: Gombeaud, Clement
name: Ollitrault, Jean-Yves
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present a new direct simulation Monte-Carlo method for solving the relativistic Boltzmann equation. We solve numerically the 2-dimensional Boltzmann equation using this new algorithm. We find that elliptic flow from this transport calculation smoothly converges towards the value from ideal hydrodynamics as the number of collisions per particle increases, as expected on general theoretical grounds, but in contrast with previous transport calculations.
description: 5 pages, 3 figures, revised
Hot and dense quark-gluon plasma thermodynamics from holographic black holes
Creators: name: Grefa, Joaquin
name: Noronha, Jorge
name: Noronha-Hostler, Jacquelyn
name: Portillo, Israel
name: Ratti, Claudia
name: Rougemont, Romulo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present new results on the equation of state and transition line of hot and dense strongly interacting QCD matter, obtained from a bottom-up Einstein-Maxwell-Dilaton holographic model. We considerably expand the previous coverage in baryon densities in this model by implementing new numerical methods to map the holographic black hole solutions onto the QCD phase diagram. We are also able to obtain, for the first time, the first-order phase transition line in a wide region of the phase diagram. Comparisons with the most recent lattice results for the QCD thermodynamics are also presented.
description: 18 pages, 15 figures
Dibaryon with highest charm number near unitarity from lattice QCD
Creators: name: Lyu, Yan
name: Tong, Hui
name: Sugiura, Takuya
name: Aoki, Sinya
name: Doi, Takumi
name: Hatsuda, Tetsuo
name: Meng, Jie
name: Miyamoto, Takaya
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A pair of triply charmed baryons, $Ω_{ccc}Ω_{ccc}$, is studied as an ideal dibaryon system by (2+1)-flavor lattice QCD with nearly physical light-quark masses and the relativistic heavy quark action with the physical charm quark mass. The spatial baryon-baryon correlation is related to their scattering parameters on the basis of the HAL QCD method. The $Ω_{ccc}Ω_{ccc}$ in the ${^1S_0}$ channel taking into account the Coulomb repulsion with the charge form factor of $Ω_{ccc}$ leads to the scattering length $a^{\rm C}_0\simeq -19~\text{fm}$ and the effective range $r^{\rm C}_{\mathrm{eff}}\simeq 0.45~\text{fm}$. The ratio $r^{\rm C}_{\mathrm{eff}}/a^{\rm C}_0 \simeq -0.024$, whose magnitude is considerably smaller than that of the dineutron ($-0.149$), indicates that $Ω_{ccc}Ω_{ccc}$ is located in the unitary regime.
description: 6 pages, 4 figures; Supplemental Material(1 page, 1 figure); Accepted for publication in Physical Review Letters
Structural phase transitions in geometrically frustrated antiferromagnets
Creators: name: Saunders, Timothy E.
name: Chalker, John T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study geometrically frustrated antiferromagnets with magnetoelastic coupling. Frustration in these systems may be relieved by a structural transition to a low temperature phase with reduced lattice symmetry. We examine the statistical mechanics of this transition and the effects on it of quenched disorder, using Monte Carlo simulations of the classical Heisenberg model on the pyrochlore lattice with coupling to uniform lattice distortions. The model has a transition between a cubic, paramagnetic high-temperature phase and a tetragonal, Neel ordered low-temperature phase. It does not support the spin-Peierls phase, which is predicted as an additional possibility within Landau theory, and the transition is first-order for reasons unconnected with the symmetry analysis of Landau theory. Quenched disorder stabilises the cubic phase, and we find a phase diagram as a function of temperature and disorder strength similar to that observed in ZnCdCrO.
description: 8 pages, 8 figures
title: KAMUS BAHASA JAWA KROMO (UMUM)
title: KAMUS BAHASA JAWA KROMO
titleType: Other
Creators: name: Manja, Nurlaila
Publisher: name: Zenodo
Year: 2024

description: Bahasa Jawa adalah bahasa daerah yang digunakan oleh masyarakat suku Jawa, terutama di wilayah Jawa Tengah, Yogyakarta, dan sebagian Jawa Timur. Bahasa ini merupakan salah satu dari bahasa Austronesia dan memiliki ciri khas berupa tingkatan bahasa yang berbeda-beda berdasarkan situasi dan hubungan sosial antara pembicara dan lawan bicara. Tingkatan tersebut dikenal dengan sebutan ngoko (bahasa informal atau kasar), madya (bahasa setengah formal), dan kromo (bahasa formal atau halus). Dalam kamus ini merupakan bahasa jawa ngoko, bahasa ini merupakan bahasa jawa yang paling umum dan banyak diketahui bahkan digunakan bagi beberapa masayarakat di luar pulau jawa, seperti di sumatera.
Assessment of the Impact of Heart Failure on Household Economic Well-being: Background and Methods- Tamil Version
Creators: name: Sivadasanpillai Harikrishnan
name: Panniyammakal Jeemon
name: Ganapathi, Sanjay
name: Reethu Salim
name: Bahl, Ajay
name: Katageri, Anand
name: Animesh Mishra
name: Anoop George Alex
name: Bhavesh Roy
name: Bishav Mohan
name: Hasit Joshi
name: Jabir Abdullakutty
name: Paul, Justin
name: Rai, Manish
name: Cholenahally Nanjappa Manjunath
name: Negi, Prakash C
name: Durgaprasad Rajasekhar
name: Rishi Sethi
name: Satyanarayan Routray
name: Radhakrishnan Shanmugasundaram
name: Sumanta Shekhar Padhi
name: Syam Sunder Reddy
Publisher: name: figshare
Year: 2021
Subjects: subject: 110201 Cardiology (incl. Cardiovascular Diseases)
subject: FOS: Clinical medicine

description: Background and rationale: Heart failure (HF), which is an emerging public health issue, adversely affects the strained health system in India. The potential adverse impact of HF on the economic well-being of affected individuals and their families is narrated in various anecdotal reports. Further, HF is known to push the affected individuals and their dependents into poverty. However, there is limited research quantifying how HF impacts the economic well-being of households from the low and middle-income countries. Methods: We describe the methods of a detailed economic impact assessment of HF at the household level in India. The economic impact study in HF is initiated across 20 centres in India. The selected centres represent different regions in India stratified based on the prevailing stage of epidemiological transition levels (ETLs). We will collect data from 1800 patients with acute decompensated HF and within 6-15 months of follow-up from the time of initial admission. The data that we intend to collect will consist of a) household healthcare expenditure including out-of-pocket expenditure, b) financing mechanisms used by households and (c) the impoverishing effects of health expenditures including distress financing and catastrophic health expenditure. Trained staff at each centre will collect relevant data by using a validated and structured interview schedule. The study will have 80% power, after accounting for five percent non-response rate, to test eight percent difference in primary outcome (proportion of families under distress financing) between different ETLs. Impact: The results from the study will help policy makers in understanding the micro-economic impact of HF in India and aid in allocation of appropriate resources for prevention and control of HF.
Characterisation of 92 Southern TESS Candidate Planet Hosts and a New Photometric [Fe/H] Relation for Cool Dwarfs
Creators: name: Rains, Adam D.
name: Žerjal, Maruša
name: Ireland, Michael J.
name: Nordlander, Thomas
name: Bessell, Michael S.
name: Casagrande, Luca
name: Onken, Christopher A.
name: Joyce, Meridith
name: Kammerer, Jens
name: Abbot, Harrison
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: We present the results of a medium resolution optical spectroscopic survey of 92 cool ($3,000 \lesssim T_{\rm eff} \lesssim 4,500\,$K) southern TESS candidate planet hosts, and describe our spectral fitting methodology used to recover stellar parameters. We quantify model deficiencies at predicting optical fluxes, and while our technique works well for $T_{\rm eff}$, further improvements are needed for [Fe/H]. To this end, we developed an updated photometric [Fe/H] calibration for isolated main sequence stars built upon a calibration sample of 69 cool dwarfs in binary systems, precise to $\pm0.19\,$dex, from super-solar to metal poor, over $1.51 < {\rm Gaia}~(B_P-R_P) < 3.3$. Our fitted $T_{\rm eff}$ and $R_\star$ have median precisions of 0.8% and 1.7%, respectively and are consistent with our sample of standard stars. We use these to model the transit light curves and determine exoplanet radii for 100 candidate planets to 3.5% precision and see evidence that the planet-radius gap is also present for cool dwarfs. Our results are consistent with the sample of confirmed TESS planets, with this survey representing one of the largest uniform analyses of cool TESS candidate planet hosts to date.
description: Accepted version. 33 Pages, 12 Figures, 9 Tables
Supplemental Table 1_AJP.docx
Creators: name: Hernandez, Laura
Publisher: name: figshare
Year: 2021
Subjects: subject: Physiology
subject: FOS: Biological sciences

description: Supplemental Table 1. Primer Sequences for the studied genes quantified by real-time-PCR.
Abbreviations: S15, ribosomal protein S15; Rsp9, ribosomal protein S9; K8, cytokeratin 8; Tph1, tryptophan hydroxylase 1; MaoA, monoamine oxidase A; Sert, serotonin reuptake transporter; Pthlh, parathyroid hormone related protein; Orai1, calcium release-activated calcium channel protein 1; Stim1, stromal interaction molecule 1; Spca1 and 2, calcium-transporting ATPase type 2C member 1 and 2; Pmca1 and 2, plasma membrane calcium ATPase 1 and 2; Serca2, sarco/endoplasmic reticulum calcium ATPase 2; 5htr7, serotonin receptor 7; Cav1.3, calcium channel, voltage-dependent, L-type, alpha 1D subunit; Trpv6, transient receptor potential cation channel subfamily V member 6; Ncx1, sodium/calcium exchanger 1; Nfatc, nuclear factor of activated T-cells, cytoplasmic 1; Mmp9 and 13, matrix metallopeptidase 9 and 13; Trap, tartrate-resistant acid phosphatase; mCsf, macrophage colony stimulating factor 1; Ctsk, cathepsin K; Rank, receptor activator of nuclear factor kappa-B; RankL, receptor activator of nuclear factor kappa-B ligand; Opg, osteoprotegerin; Runx2, runt-related transcription factor 2; Alkp, alkaline phosphatase; Bglap, bone gamma-carboxyglutamate protein; Bmp1, bone morphogenic protein 1.
Non-left-handed transmission and bianisotropic effect in a [pi]-shaped metallic metamaterials
Creators: name: Dong, Z. G.
name: Lei, S. Y.
name: Li, Q.
name: Xu, M. X.
name: Liu, H.
name: Li, T.
name: Wang, F. M.
name: Zhu, S. N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: A [pi]-shaped metallic metamaterial (geometrically, a combination medium of C-shaped resonators and continuous wires) is proposed to numerically investigate its transmission band near the resonant frequency, where otherwise it should be a negative-permeability (or negative-permittivity) stop band if either the C-shaped or continuous-wire constituent is separately considered. However, in contrast to the left-handed materials (LHMs)composed of split-ring resonators and wires as well as other metallic LHMs, this resonant transmission is a non-left-handed one as a result of the intrinsic bianisotropic effect attributed to the electrically asymmetric configuration of this [pi]-shaped metamaterial.
description: 19 pages, 6 figures
Neutrino CP violating parameters from nontrivial quark-lepton correlation: a S3xGUT model
Creators: name: Picariello, Marco
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the prediction on the lepton phases in theories with a non trivial correlation between quark (CKM) and lepton (PMNS) mixing matrices. We show that the actual evidence, under the only assumption that the correlation matrix $V^M$ product of $CKM$ and $PMNS$ has a zero in the entry $(1,3)$, gives us a prediction for the three CP-violating invariants $J$, $S_1$, and $S_2$. A better determination of the lepton mixing angles will give a strong prediction of the CP-violating invariants in the lepton sector. These will be tested in the next generation experiments. To clarify how our prediction works, we show how a model based on a Grand Unified Theory and the permutation flavor symmetry $S_3$ predicts $V^M_{13}=0$.
description: 7 pages, 3 figures. V2: new figure added