cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Scaling of population resilience with dispersal length and habitat size
Creators: name: Crespo-Miguel, Rodrigo
name: Jarillo, Javier
name: Cao-García, Francisco J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Environmental fluctuations can create population-depleted areas and even extinct areas for the population. This effect is more severe in the presence of the Allee effect (decreasing growth rate at low population densities). Dispersal inside the habitat provides a rescue effect on population-depleted areas, enhancing the population resilience to environmental fluctuations. Habitat reduction decreases the effectiveness of the dispersal rescue mechanism. We report here how the population resilience to environmental fluctuations decreases when the dispersal length or the habitat size are reduced. The resilience reduction is characterized by a decrease of the extinction threshold for environmental fluctuations. The extinction threshold is shown to scale with the ratio between the dispersal length and the scale of environmental synchrony, i.e., it is the dispersal connection between non-environmentally-correlated regions that provides resilience to environmental fluctuations. Habitat reduction also decreases the resilience to environmental fluctuations, when the habitat size is similar to or smaller than the characteristic dispersal distances. The power laws of these scaling behaviors are characterized here. Alternative scaling functions with spatial scales of population synchrony are found to fit the simulations worse. These results support the dispersal length as the critical scale for extinction induced by habitat reduction.
description: 24 pages
On the Pytkeev property in spaces of continuous functions
Creators: name: Simon, Petr
name: Tsaban, Boaz
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Topology (math.GN)
subject: Combinatorics (math.CO)
subject: Logic (math.LO)
subject: FOS: Mathematics

description: Answering a question of Sakai, we show that the minimal cardinality of a set of reals X such that C_p(X) does not have the Pytkeev property is equal to the pseudo-intersection number p. Our approach leads to a natural characterization of the Pytkeev property of C_p(X) by means of a covering property of X, and to a similar result for the Reznicenko property of C_p(X).
A review on geometric formulations for classical field theory: the Bonzom-Livine model for gravity
Creators: name: Berra-Montiel, Jasel
name: Molgado, Alberto
name: Rodríguez-López, Angel
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 70S15, 70S10, 83C05, 53D20

description: Motivated by the study of physical models associated with General Relativity, we review some finite-dimensional, geometric and covariant formulations that allow us to characterize in a simple manner the symmetries for classical field theory by implementing an appropriate fibre-bundle structure, either at the Lagrangian, the multisymplectic or the polysymplectic levels. In particular, we are able to formulate Noether's theorems by means of the covariant momentum maps and to systematically introduce a covariant Poisson-Hamiltonian framework. Also, by focusing on the space plus time decomposition for a generic classical field theory and its relation to these geometric formulations, we are able to successfully recover the gauge content and the true local degrees of freedom for the theory. In order to illustrate the relevance of these geometric frameworks, we center our attention to the analysis of a model for $3$-dimensional theory of General Relativity that involves an arbitrary Immirzi-like parameter. At the Lagrangian level, we reproduce the field equations of the system which for this model turn out to be equivalent to the vanishing torsion condition and the Einstein equations. We also concentrate on the analysis of the gauge symmetries of the system in order to obtain the Lagrangian covariant momentum map associated with the theory and, consequently, its corresponding Noether currents. Next, we aim our attention to describing how the gauge symmetries of the model yield covariant canonical transformations on the covariant multimomenta phase-space, thus giving rise to the existence of a covariant momentum map. Besides, we analyze the physical system under consideration within the De Donder-Weyl canonical theory implemented at the polysymplectic level, thus establishing a relation from the covariant momentum map to the conserved currents of the theory.
description: 55 pages, no figures
Proof(s) of the Lamperti representation of Continuous-State Branching Processes
Creators: name: Caballero, Maria-Emilia
name: Lambert, Amaury
name: Bravo, Geronimo Uribe
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60J80 (Primary), 60B10 (Secondary), 60G44, 60G51, 60H20

description: This paper uses two new ingredients, namely stochastic differential equations satisfied by continuous-state branching processes (CSBPs), and a topology under which the Lamperti transformation is continuous, in order to provide self-contained proofs of Lamperti's 1967 representation of CSBPs in terms of spectrally positive Lévy processes. The first proof is a direct probabilistic proof, and the second one uses approximations by discrete processes, for which the Lamperti representation is evident.
Surface-focused Seismic Holography of Sunspots: I. Observations
Creators: name: Braun, D. C.
name: Birch, A. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a comprehensive set of observations of the interaction of p-mode oscillations with sunspots using surface-focused seismic holography. Maps of travel-time shifts, relative to quiet-Sun travel times, are shown for incoming and outgoing p modes as well as their mean and difference. We compare results using phase-speed filters with results obtained with filters that isolate single p-mode ridges, and further divide the data into multiple temporal frequency bandpasses. The f mode is removed from the data. The variations of the resulting travel-time shifts with magnetic-field strength and with the filter parameters are explored. We find that spatial averages of these shifts within sunspot umbrae, penumbrae, and surrounding plage often show strong frequency variations at fixed phase speed. In addition, we find that positive values of the mean and difference travel-time shifts appear exclusively in waves observed with phase-speed filters that are dominated by power in the low-frequency wing of the p1 ridge. We assess the ratio of incoming to outgoing p-mode power using the ridge filters and compare surface-focused holography measurements with the results of earlier published p-mode scattering measurements using Fourier-Hankel decomposition.
description: Solar Physics, accepted
Elicitation to transcribe an interview, numeral scope, and perception verbs
Creators: name: Rudolph, Johnny (Soni)
name: Drummond, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: nkr

description: Elicitation to transcribe an interview about childhood games, followed by elicitation on numeral scope possibilities, scope out of islands, and complements of perception verbs.
Properties of Fast and Slow Bars Classified by Epicyclic Frequency Curves from Photometry of Barred Galaxies
Creators: name: Lee, Yun Hee
name: Park, Myeong-Gu
name: Hwang, Ho Seong
name: Ann, Hong Bae
name: Chung, Haeun
name: Kim, Taehyun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We test the idea that bar pattern speeds decrease with time owing to angular momentum exchange with a dark matter halo. If this process actually occurs, then the locations of the corotation resonance and other resonances should generally increase with time. We therefore derive the angular velocity $Ω$ and epicyclic frequency $κ$ as functions of galactocentric radius for 85 barred galaxies using photometric data. Mass maps are constructed by assuming a dynamical mass-to-light ratio and then solving the Poisson equation for the gravitatonal potential. The location of Lindblad resonances and the corotation resonance radius are then derived using the standard precession frequency curves in conjunction with bar pattern speeds recently estimated from the Tremaine-Weinberg method as applied to Integral Field Spectroscopy (IFS) data. Correlations between physical properties of bars and their host galaxies indicate that bar {\it length} and the corotation radius depend on the disk circular velocity while bar {\it strength} and pattern speed do not. As the bar pattern speed decreases, bar strength, length, and corotation radius incease, but when bars are subclassified into fast, medium, and slow domains, no significant change in bar length is found. Only a hint of an increase of bar strength from fast to slow bars is found. These results suggest that bar length in galaxies undergoes little evolution, being instead determined mainly by the size of their host galaxy.
description: 24 pages, 11 figures
Quadratic Mixing of Radio Frequency Signals using Superconducting Quantum Interference Filters
Creators: name: Caputo, P.
name: Tomes, J.
name: Oppenlaender, J.
name: Haeussler, Ch.
name: Friesch, A.
name: Traeuble, T.
name: Schopohl, N.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The authors demonstrate quadratic mixing of weak time harmonic electromagnetic fields applied to Superconducting Quantum Interference Filters, manufactured from high-$T_{\mathrm{c}}$ grain boundary Josephson junctions and operated in active microcooler. The authors use the parabolic shape of the dip in the dc-voltage output around B=0 to mix \emph{quadratically} two external rf-signals, at frequencies $f_{\mathrm{1}}$ and $f_{\mathrm{2}}$ well below the Josephson frequency $f_{\mathrm{J}}$, and detect the corresponding mixing signal at $| {f_{1}-f_{2}}| $. Quadratic mixing takes also place when the SQIF is operated without magnetic shield. The experimental results are well described by a simple analytical model based on the adiabatic approximation.
description: 3 pages, 3 figures
Supplementary document for Toggling near-field directionality via manipulation of matter’s anisotropy - 7223282.pdf
Creators: name: Ma, Wenbo
name: Chen, Xuhuinan
name: Zhong, Yuhan
name: Bian, Chenxu
name: Chan, Wang
name: Chen, Hongsheng
name: Lin, Xiao
Publisher: name: Optica Publishing Group
Year: 2024
Subjects: Uncategorized

description: This supplementary material includes the derivation of the hyperbolic matter parameters in the main text and additional analyses of other scenarios.
GUIA DOS NOVOS INDICADORES DO PAGAMENTO POR DESEMPENHO DA ESB
Creators: name: BAKER, Patrícia Andrea Godinho
name: CASSEB, Tamiris Faro
name: DAMASCENO, Yohana Sandy Souza
name: MELO, Ceci Baker de
name: MOREIRA, Camila de Araújo
name: SIQUEIRA, Mayra Rolla
name: CRUZ, Annanda Pereira Amaral Moraes da
name: CELESTINO, JR Aluiso Ferreira
name: ROCHA, Marcela Fernanda dos Santos
Publisher: name: Zenodo
Year: 2024

description: Este Guia tem a finalidade de apresentar os novos indicadores de Saúde Bucal do pagamento por desempenho a ser observado na atuação das eSB. Estes indicadores foram instituídos pela Portaria GM/MS No 960, de 17 de julho de 2023, que estabelece o Pagamento por desempenho da Saúde Bucal na Atenção Primária à Saúde - APS. Este produto é voltado para os cirurgiões dentistas da rede municipal afim de orientá-los a conhecer os indicadores e saber aplicar para alcançar as metas pedidas.
Study of the N=50 major shell effect close to $^{78}$Ni : First evidence of a weak coupling structure in $^{83}\_{32}$Ge$\_{51}$ and three-proton configuration states in $^{81}\_{31}$Ga$\_{50}$
Creators: name: Verney, D.
name: Ibrahim, F.
name: Perru, O.
name: Bajeat, O.
name: Bourgeois, C.
name: Ducourtieux, M.
name: Donzaud, C.
name: Essabaa, S.
name: Gales, S.
name: Gaudefroy, L.
name: Guillemaud-Mueller, D.
name: Hammache, F.
name: Lau, C.
name: Lefort, H.
name: Blanc, F. Le
name: Mueller, A. C.
name: Pougheon, F.
name: Roussiere, B.
name: Sauvage, J.
name: Sorlin, O.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: New levels were attributed to $^{81}\_{31}$Ga$\_{50}$ and $^{83}\_{32}$Ge$\_{51}$ which were fed by the $β$-decay of their respective mother nuclei $^{81}\_{30}$Zn$\_{51}$ and $^{83}\_{31}$Ga$\_{52}$ produced by fission at the "PARRNe" ISOL set-up installed at the Tandem accelerator of the Institut de Physique Nucléaire, Orsay. We show that the low energy structure of $^{81}\_{31}$Ga$\_{50}$ and $^{83}\_{32}$Ge$\_{51}$ can easily be explained within the natural hypothesis of a strong energy gap at N=50 and a doubly-magic character for $^{78}$Ni.
description: 2 pages, pdf file, To be published in the Proceedings of "International Symposium on Structure of Exotic Nuclei and Nuclear Forces (SENUF 06)", March 2006, Tokyo, Japan
A tunable plasmonic resonator using kinetic 2D inductance and patch capacitance
Creators: name: Muravev, V. M.
name: Semenov, N. D.
name: Andreev, I. V.
name: Gusikhin, P. A.
name: Kukushkin, I. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have studied microwave response of a high-mobility two-dimensional electron system (2DES) contacted by two side electrodes. Using kinetic inductance of the 2DES and inter-electrode capacitance, we have constructed a subwavelength 2D plasmonic resonator. We have shown that the resonant frequency of this circuit can be controlled by 2D electron density, external magnetic field, or size of the electrodes. This opens up possibilities for using arrays of plasmonic circuits as tunable components in different frequency ranges.
On a stratification of the Kontsevich space of the Grassmannian G(2,4) and enumerative geometry
Creators: name: Ramirez, Cristina Martinez
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14N35, 14N10

description: We study the geometry of the Kontsevich compactification of stable maps to the Grassmannian of lines in the projective space. We consider a stratification of this space. As an application we compute the degree of the variety parametrizing rational ruled surfaces with a minimal directix of degree d/2-1 by intersecting divisors in the moduli space of stable maps. For example, there are 128054031872040 rational ruled sextics passing through 25 points in $\mathbb{P}^{3}$ with a minimal directrix of degree 2.
description: 17 pages
Big Data
Creators: name: Opdahl, Andreas L
name: Nunavath, Vimala
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: The Internet of Things, crowdsourcing, social media, public authorities, and other sources generate bigger and bigger data sets. Big and open data offers many benefits for emergency management, but also pose new challenges. This chapter will review the sources of big data and their characteristics. We then discuss potential benefits of big data for emergency management along with the technological and societal challenges it poses. We review central technologies for big-data storage and processing in general, before presenting the Spark big-data engine in more detail. Finally, we review ethical and societal threats that big data pose.
description: Opdahl, A. L., and Nunavath, V. (2020). Big Data. Big Data in Emergency Management: Exploitation Techniques for Social and Mobile Data, 15-29
Type-II Calabi-Yau compactifications, T-duality and special geometry in general spacetime signature
Creators: name: Medevielle, M.
name: Mohaupt, T.
name: Pope, G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We obtain the bosonic Lagrangians of vector and hypermultiplets coupled to four-dimensional $\mathcal{N}=2$ supergravity in signatures $(0,4)$, $(1,3)$ and (2,2) by compactification of type-II string theories in signatures (0,10), (1,9) and (2,8) on a Calabi-Yau threefold. Depending on the signature and the distinctions between type-IIA/IIA$^*$/IIB/IIB$^*$/IIB' the resulting scalar geometries are special Kähler or special para-Kähler for vector multiplets and quaternion-Kähler or para-quaternion Kähler for hypermultiplets. By spacelike and timelike reductions we obtain three-dimensional $\mathcal{N}=4$ supergravity theories coupled to two sets of hypermultiplets. We determine the c-maps relating vector to hypermultiplets, and show how the four-dimensional theories are related by spacelike, timelike and mixed, signature-changing T-dualities.
description: 42 pages (including 10 page appendix), 14 tables, 2 figures. v2: LaTeX problem with arXiv identifiers fixed
Exploring the infrared/radio correlation at high redshift
Creators: name: Ibar, Edo
name: Cirasuolo, Michele
name: Ivison, Rob
name: Best, Philip
name: Smail, Ian
name: Biggs, Andy
name: Simpson, Chris
name: Dunlop, Jim
name: Almaini, Omar
name: McLure, Ross
name: Foucaud, Sebastien
name: Rawlings, Steve
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have analysed the 24um properties of a radio-selected sample in the Subaru-XMM/Newton Deep Field in order to explore the behaviour of the FIR/radio relation at high redshifts. Statistically, the correlation is described by q24, the ratio between the observed flux densities at 24um and 1.4GHz, respectively. Using 24um data results in considerably more scatter in the correlation than previous work using data at 60-70um. Nevertheless, we do observe a steady correlation as a function of redshift, up to z~3.5, suggesting its validity back to primeval times. We find q24 = 0.30 +/- 0.56 for the observed and q24 = 0.71 +/- 0.47 for the k-corrected radio sample, based on sources with 300uJy < S(1.4GHz) < 3.2mJy and 24um detections. A suitable k-correction given by a M82-like mid-IR template suggests no extreme silicate absorption in the bulk of our radio sample. Using thresholds in q24 to identify radio-excess sources, we have been able to characterise the transition from radio-loud AGN to star-forming galaxies and radio-quiet AGN at faint (<1mJy) radio flux densities. Our results are in broad agreement with previous studies which show a dominant radio-loud AGN population at >1mJy. The rest-frame U-B colours of the expected radio-excess population have redder distribution than those that follow the correlation. This is therefore a promising way to select obscured Type-2 AGN, with a radio loud nature, missed by deep X-ray observations. Spectroscopic follow-up of these sources is required to fully test this method.
description: The paper contains 7 figures and 1 table. In press at MNRAS
Review the possible advective disk structures around a black hole with two-type gas inflows
Creators: name: Kumar, Rajiv
name: Yuan, Ye-Fei
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We studied the general advective accretion solutions around the Kerr black hole (BH) with investigating two types of inflow gases at the outer accretion boundary (AB). We classified these two types of gases as a \cm and a \hm inflow gas at the outer AB on the basis of their temperatures and solutions. We found that the \hm gas is more efficient for angular momentum transportation around the outer AB than the \cm gas. The \hm gas can give global multiple \cite[popular as shock solution][]{c89} or single sonic point solutions and the \cm can give smooth global solution \cite[popular as ADAF][]{ny94} or two sonic point solutions. These solutions also represented on a plane of energy and angular momentum ($\be-L_0$) parameter space. Theoretically for the first time, we explored the relation between the nature of accretion solutions with the nature of initial accreting gas at the AB with detail computational and possible physical analysis. We also found that the surface density of the flow is highly affected with changing of the temperature at the AB, which can alter the radiative emissivities of the flow. The flow variables of various advective solutions also compared. On the basis of those results, we plotted some inner disk structures around the BHs. Doing so, we conjectured about the persistent/transient nature of spectral states, soft-excess and time scales of variabilities around the black hole $X-$ ray binaries (BXBs) and active galactic nuclei (AGNs).
description: 26 pages, 10 figures, accepted in ApJ
Weinrich, Michael: Die bescheidene Kompromisslosigkeit der Theologie Karl Barths
Creators: name: Sattler, Dorothea
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 64 Nr. 3 (2015): Ökumenische Rundschau, Band 64, Heft 3
Finite difference time domain modeling of diffraction losses in dielectric structures having translational symmetry
Creators: name: Su, Wei
Publisher: name: University of British Columbia
Year: 2009

description: This thesis concerns the quantification of the prism light guide's fundamental diffraction limit, by means of numerical simulation. A new technique is developed to model the intrinsically 3D problem of an off-axis incident plane striking the prism light guide wall, in a reduced 2D treatment which retains all the physics of the original problem. In order to study this system, a computer code is developed based on the Finite-Difference Time-Domain algorithm, and its accuracy is verified by modeling test systems having known analytical solutions. The system is then applied to the dimensionally reduced prism light guide problem. As expected, the numerical calculations show an approximate linear relation between the diffraction loss per reflection off the prism light guide wall A and the ratio of radiation wavelength to prism size, — . Previously, the ratio of a X loss fraction to — was unknown, and this work for the first time establishes the a ratio to be approximately 0.75, which is an encouraging result which means that prism light guides can be improved considerably relative to those manufactured today. A video tape showing the animation of diffraction process is provided. Two methods are then presented to attempt to reduce the diffraction losses. The first, re-shaping of the corners of the prisms in the prism light guide wall, does not show any improvement. However the second, in which metallic reflectors are placed just outside the prism corners, does reduce diffraction loss to some extent. This suggests that further research work is warranted to further reduce diffraction losses in a Prism Light Guide.
Gustatory Homoeopathy
Creators: name: Tridibesh T.
name: Shankar D.
name: Rakesh D.
name: Niranjan M.
name: D.P. Singh
name: Byomakesh T.
name: D.R. Sahu
name: Umakant P.
name: Pramod B.P.
name: Jeevan K.P.
name: S.N. Pandey
name: Sanskriti T.
Publisher: name: gjrpublication
Year: 2024

description: The current article looks into the scientific aspects of hot & cold foods. Although the nose has a role in the preference of hot & food foods, the article focuses upon the tongue & its role primarily. Individuals have different preferences regarding hot & cold foods. Here, the article links homoeopathy which use the preference of hot foods & cold foods by each individual to prescribe differently for each individual based upon their hot & cold preferences. Besides, the nose & the tongue, the skin also has a role in the process of preference of hot foods. Here also, homoeopathy has different prescriptions based upon the process of sweating & eating. Hence, the science of bio chemistry in hot & cold foods becomes an individualistic feature while seen through the homoeopathic lens. In the distal part of the article, there is a suggested treatment protocol based on the preference of hot & cold foods for individuals. These drugs are suitable to the individuals for any issue that they may face in their lives. These drugs become constitutional, polychrest, deep acting for these individuals. The population at large should involve a professional homoeopath while using these therapeutic approaches.
Closed-loop spiking control on a neuromorphic processor implemented on the iCub
Creators: name: Zhao, Jingyue
name: Risi, Nicoletta
name: Monforte, Marco
name: Bartolozzi, Chiara
name: Indiveri, Giacomo
name: Donati, Elisa
Publisher: name: arXiv
Year: 2020
Subjects: subject: Emerging Technologies (cs.ET)
subject: Neural and Evolutionary Computing (cs.NE)
subject: Robotics (cs.RO)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Despite neuromorphic engineering promises the deployment of low latency, adaptive and low power systems that can lead to the design of truly autonomous artificial agents, the development of a fully neuromorphic artificial agent is still missing. While neuromorphic sensing and perception, as well as decision-making systems, are now mature, the control and actuation part is lagging behind. In this paper, we present a closed-loop motor controller implemented on mixed-signal analog-digital neuromorphic hardware using a spiking neural network. The network performs a proportional control action by encoding target, feedback, and error signals using a spiking relational network. It continuously calculates the error through a connectivity pattern, which relates the three variables by means of feed-forward connections. Recurrent connections within each population are used to speed up the convergence, decrease the effect of mismatch and improve selectivity. The neuromorphic motor controller is interfaced with the iCub robot simulator. We tested our spiking P controller in a single joint control task, specifically for the robot head yaw. The spiking controller sends the target positions, reads the motor state from its encoder, and sends back the motor commands to the joint. The performance of the spiking controller is tested in a step response experiment and in a target pursuit task. In this work, we optimize the network structure to make it more robust to noisy inputs and device mismatch, which leads to better control performances.
Elicitation on control, passives, and cognate objects
Creators: name: Rudolph, Johnny (Soni)
name: Drummond, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: nkr

description: Elicitation on control into gi clauses, passives and the ordering of post-verbal particles, and the case marking of cognate objects. A short interlude in the middle to discuss plans for fieldwork and developing a Nukuoro curriculum.
Getting Started with Software
Creators: name: Vrouwenvelder, Kristina
Publisher: name: Zenodo
Year: 2023
Subjects: software citation
software sharing
publishing

description: Presentation given at the Open Science and Data Help Desk at AGU 2023 in San Francisco. 

Thursday, 14 December 2023

Learn best practices for developing, documenting, and sharing the code you use for data analysis and visualization or to produce your model output!
Photon colliders: the first 25 years
Creators: name: Telnov, V. I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: In this invited talk at the ``historical'' session of PHOTON2005, I was asked to recount the history and the development, from its earliest days to the present, of the idea of photon colliders based on conversion of high energy electrons to high-energy photons at a future high-energy linear e+e- collider. Described in this talk are the general features and schemes of a photon collider, the evolution in understanding of what the parameters of a realistic photon collider are, possible solutions of various technical problems, the physics motivation, and the present status of photon-collider development. For a more detailed description of the photon collider at the ILC and a discussion of the associated technical issues, please refer to my talks at PLC2005, the conference that immediately followed PHOTON2005 (to be published in Acta Physica Polonica B as well).
description: Presented at Photon: Its First Hundred Years And The Future, includes PHOTON2005 and PLC2005, Warsaw and Kazimierz, Poland, 30 Aug - 8 Sep 2005, to be published in Acta Physica Polonica B, 21 pp, Latex, 8 .eps figures
Conductivity of two-dimensional narrow gap semiconductors subjected to strong Coulomb disorder
Creators: name: Huang, Yi
name: He, Yanjun
name: Skinner, Brian
name: Shklovskii, B. I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: In the ideal disorder-free situation, a two-dimensional band gap insulator has an activation energy for conductivity equal to half the band gap $Δ$. But transport experiments usually exhibit a much smaller activation energy at low temperature, and the relation between this activation energy and $Δ$ is unclear. Here we consider the temperature-dependent conductivity of a two-dimensional insulator on a substrate containing Coulomb impurities, with random potential amplitude $Γ\gg Δ$. We show that the conductivity generically exhibits three regimes of conductivity, and only the highest temperature regime exhibits an activation energy that reflects the band gap. At lower temperatures, the conduction proceeds through activated hopping or Efros-Shklovskii variable-range hopping between electron and hole puddles created by the disorder. We show that the activation energy and characteristic temperature associated with these processes steeply collapse near a critical impurity concentration. Larger concentrations lead to an exponentially small activation energy and exponentially long localization length, which in mesoscopic samples can appear as a disorder-induced insulator-to-metal transition. We also arrive at a similar steep disorder driven insulator-metal transition in thin films of three-dimensional topological insulators with large dielectric constant, for which Coulomb impurities inside the film create a large disorder potential due to confinement of their electric field inside the film.
description: 10 pages, 5 figures
Quantum cellular automata and quantum field theory in two spatial dimensions
Creators: name: Brun, Todd A.
name: Mlodinow, Leonard
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum walks on lattices can give rise to one-particle relativistic wave equations in the long-wavelength limit. In going to multiple particles, quantum cellular automata (QCA) are natural generalizations of quantum walks. In one spatial dimension, the quantum walk can be "promoted" to a QCA that, in the long-wavelength limit, gives rise to the Dirac quantum field theory (QFT) for noninteracting fermions. This QCA/QFT correspondence has both theoretical and practical applications, but there are obstacles to similar constructions in two or more spatial dimensions. Here we show that a method of construction employing distinguishable particles confined to the completely antisymmetric subspace yields a QCA in two spatial dimensions that gives rise to the 2D Dirac QFT. Generalizing to 3D will entail some additional complications, but no conceptual barriers. We examine how this construction evades the "no go" results in earlier work.
description: 12 pages, no figures
O PAPEL DA ORIENTAÇÃO EDUCACIONAL NA PROMOÇÃO DA APRENDIZAGEM SIGNIFICATIVA E NO DESENVOLVIMENTO DE HABILIDADES COGNITIVAS, SOCIOEMOCIONAIS E METACOGNITIVAS
Creators: name: Jocirley de OLIVEIRA
Publisher: name: Zenodo
Year: 2024
Subjects: Orientação educacional
Habilidades cognitivas
Socioemocionais e metacognitivas

description: RESUMO

O Artigo científico em questão é resultado de uma pesquisa bibliográfica com abordagem qualitativa, que investigou o papel da Orientação Educacional na promoção da aprendizagem significativa dos estudantes, com enfoque no desenvolvimento de habilidades cognitivas, socioemocionais e metacognitivas. Através de uma revisão sistemática da literatura, foi possível identificar que a Orientação Educacional é fundamental para o desenvolvimento integral dos estudantes, uma vez que contribui para o desenvolvimento de suas habilidades cognitivas, socioemocionais e metacognitivas, favorecendo a construção de uma aprendizagem significativa. Além disso, a pesquisa mostrou que a Orientação Educacional pode contribuir para a melhoria do clima escolar, bem como para a prevenção de problemas comportamentais e emocionais dos estudantes. Os resultados apontam para a necessidade de que a Orientação Educacional seja valorizada e considerada um componente essencial no processo educativo, a fim de promover uma educação de qualidade e formação integral dos estudantes.
XMM-Newton observation of the eclipsing binary Algol
Creators: name: Yang, Xue-juan
name: Lu, Fang-jun
name: Aschenbach, B.
name: Chen, Li
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an {\sl XMM-Newton} observation of the eclipsing binary Algol which contains an X-ray dark B8V primary and an X-ray bright K2IV secondary. The observation covered the optical secondary eclipse and captured an X-ray flare that was eclipsed by the B star. The EPIC and RGS spectra of Algol in its quiescent state are described by a two-temperature plasma model. The cool component has a temperature around 6.4$\times 10^{6}$ K while that of the hot component ranges from 2 to 4.0$\times 10^{7}$ K. Coronal abundances of C, N, O, Ne, Mg, Si and Fe were obtained for each component for both the quiescent and the flare phases, with generally upper limits for S and Ar, and C, N, and O for the hot component. F-tests show that the abundances need not to be different between the cool and the hot component and between the quiescent and the flare phase with the exception of Fe. Whereas the Fe abundance of the cool component remains constant at $\sim$0.14, the hot component shows an Fe abundance of $\sim$0.28, which increases to $\sim$0.44 during the flare. This increase is expected from the chromospheric evaporation model. The absorbing column density $N_H$ of the quiescent emission is 2.5$\times10^{20}$ cm$^{-2}$, while that of the flare-only emission is significantly lower and consistent with the column density of the interstellar medium. This observation substantiates earlier suggestions of the presence of X-ray absorbing material in the Algol system.
description: 15 pages, 9 figures, Accpted by RAA
Non-unitary triplet superconductivity tuned by field-controlled magnetization --URhGe, UCoGe and UTe$_2$--
Creators: name: Machida, Kazushige
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report on theoretical studies on ferromagnetic superconductors, URhGe, and UCoGe and identifies the pairing state as a non-unitary spin-triplet one, analogous to superfluid $^3$He-A phase. A recently found superconductor UTe$_2$ with almost ferromagnet is analyzed by the same manner. Through investigating their peculiar upper critical field $H_{\rm c2}$ shapes, it is shown that the pairing symmetry realized in all three compounds can be tuned by their magnetization curves under applied fields. This leads to the reentrant $H_{\rm c2}$ in URhGe, an S-shaped in UCoGe and an L-shaped $H_{\rm c2}$ in UTe$_2$ observed under the field direction parallel to the magnetic hard axis in orthorhombic crystals in common. The identification with double chiral form: ${\bf d}(k)=(\hat{b}+i\hat{c})(k_b+ik_c)$ in UTe$_2$ naturally enables us to understand (1) multiple phases with A$_1$, A$_2$, and A$_0$ phases observed under pressure, (2) the enhanced reentrant $H_{\rm c2}$ for the off-axis direction fields associated with first order meta-magnetic transition, and (3) Weyl point nodes oriented along the $a$-axis. All three compounds are found to be topologically rich solid-state materials worth further investigation.
Nearly-Hamiltonian Structure for Water Waves with Constant Vorticity
Creators: name: Constantin, Adrian
name: Ivanov, Rossen I.
name: Prodanov, Emil M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We show that the governing equations for two-dimensional gravity water waves with constant non-zero vorticity have a nearly-Hamiltonian structure, which becomes Hamiltonian for steady waves.
description: 12 pages, AMS-LaTeX, no figures. To appear in Journal of Mathematical Fluid Mechanics
Universality class of fiber bundles with strong heterogeneities
Creators: name: Hidalgo, R. C.
name: Kovacs, K.
name: Pagonabarraga, I.
name: Kun, F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the effect of strong heterogeneities on the fracture of disordered materials using a fiber bundle model. The bundle is composed of two subsets of fibers, i.e. a fraction 0
Improving Performance of Zoom-In Cosmological Simulations using Initial Conditions with Customized Grids
Creators: name: Brown, Gillen
name: Gnedin, Oleg Y.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present a method for customizing the root grid of zoom-in initial conditions used for simulations of galaxy formation. Starting from the white noise used to seed the structures of an existing initial condition, we cut out a smaller region of interest and use this trimmed white noise cube to create a new root grid. This new root grid contains similar structures as the original, but allows for a smaller box volume and different grid resolution that can be tuned to best suit a given simulation code. To minimally disturb the zoom region, the dark matter particles and gas cells from the original zoom region are placed within the new root grid, with no modification other than a bulk velocity offset to match the systemic velocity of the corresponding region in the new root grid. We validate this method using a zoom-in initial condition containing a Local Group analog. We run collisionless simulations using the original and modified initial conditions, finding good agreement. The dark matter halo masses of the two most massive galaxies at $z=0$ match the original to within 15%. The times and masses of major mergers are reproduced well, as are the full dark matter accretion histories. While we do not reproduce specific satellite galaxies found in the original simulation, we obtain qualitative agreement in the distributions of the maximum circular velocity and the distance from the central galaxy. We also examine the runtime speedup provided by this method for full hydrodynamic simulations with the ART code. We find that reducing the root grid cell size improves performance, but the increased particle and cell numbers can negate some of the gain. We test several realizations, with our best runs achieving a speedup of nearly a factor of two.
description: Accepted for publication in New Astronomy
Exact master equation for a noncommutative Brownian particle
Creators: name: Dias, Nuno Costa
name: Prata, Joao Nuno
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive the Hu-Paz-Zhang master equation for a Brownian particle linearly coupled to a bath of harmonic oscillators on the plane with spatial noncommutativity. The results obtained are exact to all orders in the noncommutative parameter. As a by-product we derive some miscellaneous results such as the equilibrium Wigner distribution for the reservoir of noncommutative oscillators, the weak coupling limit of the master equation and a set of sufficient conditions for strict purity decrease of the Brownian particle. Finally, we consider a high-temperature Ohmic model and obtain an estimate for the time scale of the transition from noncommutative to ordinary quantum mechanics. This scale is considerably smaller than the decoherence scale.
description: Latex file, 28 pages, Published version
The UKIRT Infrared Deep Sky Survey First Data Release
Creators: name: Warren, S. J.
name: Hambly, N. C.
name: Dye, S.
name: Almaini, O.
name: Cross, N. J. G.
name: Edge, A. C.
name: Foucaud, S.
name: Hewett, P. C.
name: Hodgkin, S. T.
name: Irwin, M. J.
name: Jameson, R. F.
name: Lawrence, A.
name: Lucas, P. W.
name: Adamson, A. J.
name: Bandyopadhyay, R. M.
name: Bryant, J.
name: Collins, R. S.
name: Davis, C. J.
name: Dunlop, J. S.
name: Emerson, J. P.
name: Evans, D. W.
name: Gonzales-Solares, E. A.
name: Hirst, P.
name: Jarvis, M. J.
name: Kendall, T. R.
name: Kerr, T. H.
name: Leggett, S. K.
name: Lewis, J. R.
name: Mann, R. G.
name: McLure, R. J.
name: McMahon, R. G.
name: Mortlock, D. J.
name: Rawlings, M. G.
name: Read, M. A.
name: Riello, M.
name: Simpson, C.
name: Smith, D. J. B.
name: Sutorius, E. T. W.
name: Targett, T. A.
name: Varricatt, W. P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The First Data Release (DR1) of the UKIRT Infrared Deep Sky Survey (UKIDSS) took place on 2006 July 21. UKIDSS is a set of five large near-infrared surveys, covering a complementary range of areas, depths, and Galactic latitudes. DR1 is the first large release of survey-quality data from UKIDSS and includes 320 sq degs of multicolour data to (Vega) K=18, complete (depending on the survey) in three to five bands from the set ZYJHK, together with 4 sq degs of deep JK data to an average depth K=21. In addition the release includes a similar quantity of data with incomplete filter coverage. In JHK, in regions of low extinction, the photometric uniformity of the calibration is better than 0.02 mag. in each band. The accuracy of the calibration in ZY remains to be quantified, and the same is true of JHK in regions of high extinction. The median image FWHM across the dataset is 0.82 arcsec. We describe changes since the Early Data Release in the implementation, pipeline and calibration, quality control, and archive procedures. We provide maps of the areas surveyed, and summarise the contents of each of the five surveys in terms of filters, areas, and depths. DR1 marks completion of 7 per cent of the UKIDSS 7-year goals.
description: Replaced with accepted version. 12 figures. 6 figures are low resolution. Version of paper with full-resolution figures available at http://astro.ic.ac.uk/~sjw4/ukidss_dr1_accepted.ps.gz
NetFlow Datasets for Machine Learning-based Network Intrusion Detection Systems
Creators: name: Sarhan, Mohanad
name: Layeghy, Siamak
name: Moustafa, Nour
name: Portmann, Marius
Publisher: name: arXiv
Year: 2020
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Machine Learning (ML)-based Network Intrusion Detection Systems (NIDSs) have proven to become a reliable intelligence tool to protect networks against cyberattacks. Network data features has a great impact on the performances of ML-based NIDSs. However, evaluating ML models often are not reliable, as each ML-enabled NIDS is trained and validated using different data features that may do not contain security events. Therefore, a common ground feature set from multiple datasets is required to evaluate an ML model's detection accuracy and its ability to generalise across datasets. This paper presents NetFlow features from four benchmark NIDS datasets known as UNSW-NB15, BoT-IoT, ToN-IoT, and CSE-CIC-IDS2018 using their publicly available packet capture files. In a real-world scenario, NetFlow features are relatively easier to extract from network traffic compared to the complex features used in the original datasets, as they are usually extracted from packet headers. The generated Netflow datasets have been labelled for solving binary- and multiclass-based learning challenges. Preliminary results indicate that NetFlow features lead to similar binary-class results and lower multi-class classification results amongst the four datasets compared to their respective original features datasets. The NetFlow datasets are named NF-UNSW-NB15, NF-BoT-IoT, NF-ToN-IoT, NF-CSE-CIC-IDS2018 and NF-UQ-NIDS are published at http://staff.itee.uq.edu.au/marius/NIDS_datasets/ for research purposes.
Challenges in Dynamic Mode Decomposition Appendix
Creators: name: Wu, Ziyou
name: Brunton, Steven L.
name: Revzen, Shai
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Computational Biology
subject: 10202 Biological Mathematics
subject: FOS: Mathematics

description: The Appendix presents further information regarding the generality of the class of systems studied in the paper and more related DMD results. In A.1, A.2, we show the class of systems described by multinomial observations of diagonal linear dynamics is quite general, and they can be viewed as extended linear systems whose eigenvalues fall on a lattice. In A.3, we show our parametrization can cover all 3x3 real matrices. In A.4, we present DMD results for a 9-dimensional linear system with non-resonant modes. In A.5, We present DMD results using other DMD algorithms: forward-backward (FB) DMD, total-least square (TLS) DMD, and optimized DMD. In A.6, we present a 5D system with a spectrum more reminiscent of multi-legged systems. In A.7, we present DMD results under different noise levels.
R FUNKSIYASI YORDAMIDA MURAKKAB 3D OBYEKTLARNI QURISH
Creators: name: Nuraliyev, Faxriddin
name: Inoyatov, Mirzayor
Publisher: name: Zenodo
Year: 2024

description: R dasturlash tili ko'pincha ma'lumotlarni tahlil qilish va statistik modellashtirish uchun ishlatiladi, lekin R funksiyada (bundan keyin R deb yuritiladi) 3D grafik va geometrik modellarni yaratish ham mumkin. Ayniqsa, `rgl` va `plot3D` kabi paketlar yordamida murakkab 3D obyektlarni qurish, ularni manipulyatsiya qilish va turli burchaklardan vizualizatsiya qilish imkoni mavjud. Ushbu maqolada R funksiyalari yordamida murakkab 3D obyektlarni qanday qurish mumkinligini batafsil ko'rib chiqamiz.