cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Executive Summary: Intelligent Aide for Climate Change, Human Settlement Early Warning & Protection Program
Creators: name: Hoard, Robin E-H.
Publisher: name: Zenodo
Year: 2022
Subjects: climate change, civil defense

description: The first part of the Intelligent Aide Climate (IAC) system is a cross-breed, of a generic early warning system (EWS) subsystem platform, changed to a climate and environmental changes warning system. Broken-down into four logical modules: historical data and sensor array input; Number crunching; Digital library and Graphical User Interface for client interaction with the system. With a digital media reference library and limited communications subsystem for updates. This software / Hardware is based on a Linux Ubuntu and Hadoop small cluster.
 The second part of the IAC system is a civilian defense protection (CDPS) subsystem, comprised of a robust microclimate over the settlement. Derived from a number of forested areas, habitats and environments in and around the settlement acting as a microclimate or protected shield. A method pioneered by the late Dr. Akire Miyawaki. The main purpose of the method is an effective way of jump-starting the creation of a forest or woodland, with considerable benefits: trees create shade and cool down local temperatures; carbon capture and storage; and recreating biodiversity. (8)
 The third part of the IAC System: is an off-site subsystem, master digital library: To finding all digital resources for future use; To house all original digital copies of first deployment of IAC Platforms and all following updates of targeted information packets for backup; To manage both the off site digital library and all deployed IAC Platform libraries; To develop targeted information packets as needed for deployed IAC Platform systems; To transmit targeted information packets in a safe and secure manner using the PSTN Intelligent Network systems. (9) This is a subsystem ancillary to the role played by the central platform of the IAC deployed system. 
Semimetallic "Electride Bands" Derived from Interlayer Electrons in Quasi-Two-Dimensional Electride Y$_2$C
Creators: name: Horiba, Koji
name: Yukawa, Ryu
name: Mitsuhashi, Taichi
name: Kitamura, Miho
name: Inoshita, Takeshi
name: Hamada, Noriaki
name: Otani, Shigeki
name: Ohashi, Naoki
name: Maki, Sachiko
name: Yamaura, Jun-ichi
name: Hosono, Hideo
name: Murakami, Youichi
name: Kumigashira, Hiroshi
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Two-dimensional (2D) electrides are a new concept material in which anionic electrons are confined in the interlayer space between positively charged layers. We have performed angle-resolved photoemission spectroscopy measurements on Y$_2$C, which is a possible 2D electride, in order to verify the formation of 2D electride states in Y$_2$C. We clearly observe the existence of semimetallic "electride bands" near the Fermi level, as predicted by ${ab}$ ${initio}$ calculations, conclusively demonstrating that Y$_2$C is a quasi-2D electride with electride bands derived from interlayer anionic electrons.
description: 5 pages, 4 figures
Learning Locomotion Skills Using DeepRL: Does the Choice of Action Space Matter?
Creators: name: Peng, Xue Bin
name: van de Panne, Michiel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Machine Learning (cs.LG)
subject: Graphics (cs.GR)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: The use of deep reinforcement learning allows for high-dimensional state descriptors, but little is known about how the choice of action representation impacts the learning difficulty and the resulting performance. We compare the impact of four different action parameterizations (torques, muscle-activations, target joint angles, and target joint-angle velocities) in terms of learning time, policy robustness, motion quality, and policy query rates. Our results are evaluated on a gait-cycle imitation task for multiple planar articulated figures and multiple gaits. We demonstrate that the local feedback provided by higher-level action parameterizations can significantly impact the learning, robustness, and quality of the resulting policies.
Next-to-leading order unitarity fits in Two-Higgs-Doublet models with soft $\mathbb{Z}_2$ breaking
Creators: name: Cacchio, Vincenzo
name: Chowdhury, Debtosh
name: Eberhardt, Otto
name: Murphy, Christopher W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We fit the next-to-leading order unitarity conditions to the Two-Higgs-Doublet model with a softly broken $\mathbb{Z}_2$ symmetry. In doing so, we alleviate the existing uncertainty on how to treat higher order corrections to quartic couplings of its Higgs potential. A simplified approach to implementing the next-to-leading order unitarity conditions is presented. These new bounds are then combined with all other relevant constraints, including the complete set of LHC Run I data. The upper $95\%$ bounds we find are $4.2$ on the absolute values of the quartic couplings, and $235$ GeV ($100$ GeV) for the mass degeneracies between the heavy Higgs particles in the type I (type II) scenario. In type II, we exclude an unbroken $\mathbb{Z}_2$ symmetry with a probability of $95\%$. All fits are performed using the open-source code HEPfit.
description: 33 pages, 13 figures, 5 tables. Comments are welcome
Effective theory and emergent $SU(2)$ symmetry in the flat bands of attractive Hubbard models
Creators: name: Tovmasyan, Murad
name: Peotta, Sebastiano
name: Törmä, Päivi
name: Huber, Sebastian D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Superconductivity (cond-mat.supr-con)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In a partially filled flat Bloch band electrons do not have a well defined Fermi surface and hence the low-energy theory is not a Fermi liquid. Neverethless, under the influence of an attractive interaction, a superconductor well described by the Bardeen-Cooper-Schrieffer (BCS) wave function can arise. Here we study the low-energy effective Hamiltonian of a generic Hubbard model with a flat band. We obtain an effective Hamiltonian for the flat band physics by eliminating higher lying bands via perturbative Schrieffer-Wolff transformation. At first order in the interaction energy we recover the usual procedure of projecting the interaction term onto the flat band Wannier functions. We show that the BCS wave function is the exact ground state of the projected interaction Hamiltonian and that the compressibility is diverging as a consequence of an emergent $SU(2)$ symmetry. This symmetry is broken by second order interband transitions resulting in a finite compressibility, which we illustrate for a one-dimensional ladder with two perfectly flat bands. These results motivate a further approximation leading to an effective ferromagnetic Heisenberg model. The gauge-invariant result for the superfluid weight of a flat band can be obtained from the ferromagnetic Heisenberg model only if the maximally localized Wannier functions in the Marzari-Vanderbilt sense are used. Finally, we prove an important inequality $D \geq \mathcal{W}^2$ between the Drude weight $D$ and the winding number $\mathcal{W}$, which guarantees ballistic transport for topologically nontrivial flat bands in one dimension.
Pacific Regionalism and the Polynesian Leaders Group
Creators: name: Iati, Iati
Publisher: name: Open Access Te Herenga Waka-Victoria University of Wellington
Year: 2022
Subjects: subject: 160699 Political Science not elsewhere classified
subject: FOS: Political science
subject: 50299 Environmental Science and Management not elsewhere classified
subject: FOS: Earth and related environmental sciences

description: In November 2011, the Polynesian Leaders Group (PLG) was formed. The inclusion of Samoa, Tonga and French Polynesia gives it enough political muscle to have some influence on Pacific regionalism, but exactly what this will be is uncertain. Notably, it was formed during a tense period for regionalism; Australia’s and New Zealand’s disproportionate influence in the Pacific Islands Forum (PIF) and Pacific Islands Forum Secretariat was increasingly being called into question, while Fiji was crowned the chair of the Melanesian Spearhead Group (MSG) even though it was then expelled from the PIF. To date, the PLG’s most notable work has been done in relation to climate change, while it also promises to address decolonisation, both of which are pressing issues on the regional agenda. These might be issue-areas where the PLG will make its mark. Another might be in counterbalancing the increasing regional influence of the MSG, which over the past 10 years has been willing to act independently of the PIF and its traditional benefactors: Australia and New Zealand. An examination of when and why the PLG was formed, how its membership is determined, and its position on key regional issues might provide answers about its regional implications.
Guiding principles for implementing persistent identification and metadata features on research tools to boost interoperability of research data and support sample management workflows
Creators: name: Plankytė, Vaida
name: Macneil, Rory
name: Chen, Xiaoli
Publisher: name: Zenodo
Year: 2023
Subjects: interoperability
persistent identifier
IGSN
RSpace
EOSC

description: In recent years, PIDs have evolved quickly from being an interesting but peripheral resource on the fringes of research data management and scholarly communication to being viewed as a core enabling resource for FAIRification of data. There are an increasing number of PIDs, and existing PIDs are being developed and used more widely. However, PID infrastructure is still immature, incomplete, dispersed, and largely siloed. The critical issue of how PIDs can be incorporated into research tools, and into research workflows, has been largely ignored. This project was instituted in order to examine in detail how to incorporate PIDs into research tools, using IGSN DOIS provided by DataCite, and the RSpace digital research platform, as a case study. The core contributors were DataCite and Research Space, which develops and provides RSpace. Also instrumental in the project work were two research institutions that provided requirements, Rothamsted Research and UiT the Arctic University of Norway, and two tools providers, the Dataverse repository and the new Fieldmark field notebook, with which RSpace has or has a planned integration. They provided valuable input into the design around data and tool interoperability. Our approach involved extensive interaction with researchers and research administrators from UiT and Rothamsted to understand their workflows and requirements for the use of IGSNs in the context of RSpace. This was an iterative and collaborative process, described in detail in the full report, that made use of user and design research methods such as write-ups, use cases, user stories, diagrams, and feedback to design and implement a solution that accurately reflected and addressed real-life considerations of integrating PIDs within a research workflow.
description: Part of the "Enhancing interoperability through the use of PIDs in research platforms" project https://eoscfuture-grants.eu/meet-the-grantees/data-and-metadata-interoperability-through-incorporation-pids-research
Quantization of Measures and Gradient Flows: a Perturbative Approach in the 2-Dimensional Case
Creators: name: Caglioti, Emanuele
name: Golse, François
name: Iacobelli, Mikaela
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35K40, 35Q94, 35B40 (35K92, 94A12)

description: In this paper we study a perturbative approach to the problem of quantization of measures in the plane. Motivated by the fact that, as the number of points tends to infinity, hexagonal lattices are asymptotically optimal from an energetic point of view (see [Morgan, Bolton: Amer. Math. Monthly 109 (2002), 165-172]), we consider configurations that are small perturbations of the hexagonal lattice and we show that: (1) in the limit as the number of points tends to infinity, the hexagonal lattice is a strict minimizer of the energy; (2) the gradient flow of the limiting functional allows us to evolve any perturbed configuration to the optimal one exponentially fast. In particular, our analysis provides a solid mathematical justification of the asymptotic optimality of the hexagonal lattice among its nearby configurations.
description: 24 pages, 6 figures
Chamaecrista plumosa var. plumosa E. Mey.
Creators: name: Musandiwa, Liada
name: Magee, Anthony R.
name: Boatwright, James S.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Fabales
Fabaceae
Chamaecrista
Chamaecrista plumosa
Chamaecrista plumosa e.mey. var. plumosa

description: 10a. CHAMAECRISTA PLUMOSA E.Mey. var. PLUMOSA. Cassia plumosa (E.Mey.) Vogel var. plumosa, Schorn & Gordon-Gray in J.S. Afr. Bot. 41: 153 (1975); Gordon-Gray in F.S.A. 16(2): 104 (1977). Prostrate and diffusely branched herbs, with several branches from the ground forming spreading mat 0.4 m in diameter. Stems glabrous or sub-glabrous, or with short appressed curved greyish becoming dense at the top parts, often reddish or purplish on one side. Leaves 10–45 × 1–10 mm.  Diagnostic Characters — Chamaecrista plumosa var. plumosa is distinguished by its short prostrate stems, with several branches from the ground forming a spreading mat to 0.4 m in diameter, glabrous or covered with curved appressed greyish hairs, and short leaves, up to 45 mm long.  Distribution and Ecology — Chamaecrista plumosa var. plumosa is widespread in KwaZulu-Natal from Ubombo through Mtubatuba to Port Shepstone (Fig. 15). Flowering from September to March.  Additional Specimens Examined — South Africa. — KWAZULU-NATAL: 2732 (Ubombo): Ingwavuma, Tongaland (–AB), 10 Dec 1968, Pooley 240 (NU) ; Ingwavuma, Malangeni E of Maputa (–BB), 19 Dec 1966, Martin 065 (NU); Lake Sibaya S Basin area (–BC), 5 Nov 1969, Hart 19 (NU); Mpilo Game Reserve (–CA), 19 Nov 1970, Willo 9 (PRE). 2832 (Mtubatuba): Hlabisa, Hluhhuwe Game Reserve (–AA), 28 Nov 1953, Ward 1873 (PRE); Hlabisa, Hluhluwe Nature Reserve (–AA), 6 Oct 1983, Phelan 710 (NU); Hlabisa, Hluhluwe Nature Reserve (–AA), 1 Nov 1962, Scott-Smith 53 (NU); St Lucia E shores (–AD), 8 Dec 1974, Smook 630 (NU). 2930 (Pietermaritzburg): Farm Ambleside, New Hanover (–BC), 13 Feb 1976, Abraham 31 (NU); Shongweni Dam, Camperdown (–DC), 21 Feb 1966, Morris 713 (NU); Isipingo N (–DD), Oct 1948, Ward 555 (NU). 2931 (Stanger): Tugela River crossing main N. Coast road (–AB), 8 Dec 1973, Stirton 402 (NU); Lower Tugela (–AD), 29 Sep 1974, Stirton 1156 (PRE). 3029 (Kokstad): E Griqualand, near Clydesdale (–BD), Mar 1883, Tyson 1167 (NBG); Alfred Harding (–DB), 4 Jan 1964, Lemox s.n. (NU). 3030 (Port Shepstone): Umzinto Pennington S Coast (–BB), 5 Jan 6220, Gordon -Gray 6220 (NU); Oribi Gorge Nature Reserve (–CB), 6 Feb 1972, Glen 528 (NU).
description: Published as part of Musandiwa, Liada, Magee, Anthony R. & Boatwright, James S., 2022, A Taxonomic Revision of Chamaecrista (Caesalpinioideae, Cassieae, Cassiinae) in Southern Africa, pp. 992-1011 in Systematic Botany (Basel, Switzerland) (Basel, Switzerland) 47 (4) on page 1008, DOI: 10.1600/036364422x16674053033831, http://zenodo.org/record/8117056
Sub-diffusive electronic states in octagonal tiling
Creators: name: de Laissardière, G. Trambly
name: Oguey, C.
name: Mayou, D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the quantum diffusion of charge carriers in octagonal tilings. Our numerical results show a power law decay of the wave-packet spreading, $L(t) \propto t^β$, characteristic of critical states in quasicrystals at large time $t$. For many energies states are sub-diffusive, i.e. $β< 0.5$, and thus conductivity increases when the amount of defects (static defects and/or temperature) increases.
description: 4 pages, 1 figure
Hermann Cohen und Adolf Deißmann: Dokumente aus dem Nachlaß Adolf Deißmanns
Creators: name: Nottmeier, Christian
Publisher: name: Humboldt-Universität zu Berlin
Year: 2002
Subjects: subject: 230 Christentum

description: Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
description: Adolf Deißmann (1866–1937), New Testament scholar in Heidelberg and Berlin as well as one of the most important figures in the ecumenical movement after World War I, studied with the neo-Kantian Hermann Cohen (1844–1918) in Marburg and felt a lifelong debt to him. Documents presented here from Deißmann's literary estate not only convey insight into the personal relationship between Deißmann and Cohen, but also show the connections between Cohen's philosophy and Deißmann's engagement in Friedrich Naumann's National Social Union as well as his research on the New Testament. The edition thus serves at the same time as a contribution to the controversial matter of the relationship between Kulturprotestantismus and liberal Judaism around 1900.
ALMA HCN and HCO+ J=3-2 observations of optical Seyfert and luminous infrared galaxies -- Confirmation of elevated HCN-to-HCO+ flux ratios in AGNs --
Creators: name: Imanishi, Masatoshi
name: Nakanishi, Kouichiro
name: Izumi, Takuma
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the results of our ALMA observations of three AGN-dominated nuclei in optical Seyfert 1 galaxies (NGC 7469, I Zw 1, and IC 4329 A) and eleven luminous infrared galaxies (LIRGs) with various levels of infrared estimated energetic contributions by AGNs at the HCN and HCO+ J=3-2 emission lines. The HCN and HCO+ J=3-2 emission lines are clearly detected at the main nuclei of all sources, except for IC 4329 A. The vibrationally excited (v2=1f) HCN J=3-2 and HCO+ J=3-2 emission lines are simultaneously covered, and HCN v2=1f J=3-2 emission line signatures are seen in the main nuclei of two LIRGs, IRAS 12112+0305 and IRAS 22491-1808, neither of which show clear buried AGN signatures in the infrared. If the vibrational excitation is dominated by infrared radiative pumping, through the absorption of infrared 14 um photons, primarily originating from AGN-heated hot dust emission, then these two LIRGs may contain infrared-elusive, but (sub)millimeter-detectable, extremely deeply buried AGNs. These vibrationally excited emission lines are not detected in the three AGN-dominated optical Seyfert 1 nuclei. However, the observed HCN v2=1f to v=0 flux ratios in these optical Seyferts are still consistent with the intrinsic flux ratios in LIRGs with detectable HCN v2=1f emission lines. The observed HCN-to-HCO+ J=3-2 flux ratios tend to be higher in galactic nuclei with luminous AGN signatures compared with starburst-dominated regions, as previously seen at J=1-0 and J=4-3.
description: 48 pages, 16 figures (emulateapj.cls), accepted for publication in AJ
M Dwarf Activity in the Pan-STARRS 1 Medium-Deep Survey: First Catalog and Rotation Periods
Creators: name: Kado-Fong, Erin
name: Williams, Peter K. G.
name: Mann, Andrew W.
name: Berger, Edo
name: Burgett, William S.
name: Chambers, Kenneth C.
name: Huber, Mark E.
name: Kaiser, Nicholas
name: Kudritzki, Rolf-Peter
name: Magnier, Eugene A.
name: Wainscoat, Richard J.
name: Waters, Christopher
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report on an ongoing project to investigate activity in the M dwarf stellar population observed by the Pan-STARRS 1 Medium Deep Survey (PS1-MDS). Using a custom-built pipeline, we refine an initial sample of $\approx$ 4 million sources in PS1-MDS to a sample of 184,148 candidate cool stars using color cuts. Motivated by the well-known relationship between rotation and stellar activity, we use a multi-band periodogram analysis and visual vetting to identify 271 sources that are likely rotating M dwarfs. We derive a new set of polynomials relating M dwarf PS1 colors to fundamental stellar parameters and use them to estimate the masses, distances, effective temperatures, and bolometric luminosities of our sample. We present a catalog containing these values, our measured rotation periods, and cross-matches to other surveys. Our final sample spans periods of $\lesssim$1-130 days in stars with estimated effective temperatures of $\approx$ 2700-4000 K. Twenty-two of our sources have X-ray cross-matches, and they are found to be relatively X-ray bright as would be expected from selection effects. Our data set provides evidence that Kepler-based searches have not been sensitive to very slowly-rotating stars ($P_{\rm rot} \gtrsim 70$ d), implying that the observed emergence of very slow rotators in studies of low-mass stars may be a systematic effect. We also see a lack of low-amplitude ($
description: 20 pages, 11 figures. Submitted to ApJ
Gauged Baby Skyrme Model with Chern-Simons term
Creators: name: Samoilenka, A.
name: Shnir, Ya.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The properties of the multisoliton solutions of the (2+1)-dimensional Maxwell-Chern-Simons-Skyrme model are investigated numerically. Coupling to the Chern-Simons term allows for existence of the electrically charge solitons which may also carry magnetic fluxes. Two particular choices of the potential term is considered: (i) the weakly bounded potential and (ii) the double vacuum potential. In the absence of the gauge interaction in the former case the individual constituents of the multisoliton configuration are well separated, while in the latter case the rotational invariance of the configuration remains unbroken. It is shown that coupling of the planar multi-Skyrmions to the electric and magnetic field strongly affects the pattern of interaction between the constituents. We analyze the dependency of the structure of the solutions, the energies, angular momenta, electric and magnetic fields of the configurations on the gauge coupling constant $g$, and the electric potential. It is found that, generically, the coupling to the Chern-Simons term strongly affects the usual pattern of interaction between the skyrmions, in particular the electric repulsion between the solitons may break the multisoliton configuration into partons. We show that as the gauge coupling becomes strong, both the magnetic flux and the electric charge of the solutions become quantized although they are not topological numbers.
description: 24 pages, 8 figures
Surface effects on nitrogen vacancy centers neutralization in diamond
Creators: name: Newell, Arthur N.
name: Dowdell, Dontray A.
name: Santamore, D. H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The performance of nitrogen vacancy (NV$^{-}$) based magnetic sensors strongly depends on the stability of nitrogen vacancy centers near the diamond surface. The sensitivity of magnetic field detection is diminished as the NV$^{-}$ turns into the neutralized charge state NV$^{0}$. We investigate the neutralization of NV$^{-}$ and calculate the ratio of NV$^{0}$ to total NV (NV$^{-}$+NV$^{0}$) caused by a hydrogen terminated diamond with a surface water layer. We find that NV$^{-}$ neutralization exhibits two distinct regions: near the surface, where the NV$^{-}$ is completely neutralized, and in the bulk, where the\ neutralization ratio is inversely proportional to depth following the electrostatic force law. In addition, small changes in concentration can lead to large differences in neutralization behavior. This phenomenon allows one to carefully control the concentration to decrease the NV$^{-}$ neutralization. The presence of nitrogen dopant greatly reduces NV$^{-}$ neutralization as the nitrogen ionizes in preference to NV$^{-}$ neutralization at the same depth. The water layer pH also affects neutralization. If the pH is very low due to cleaning agent residue, then we see a change in the band bending and the reduction of the $2$-dimensional hole gas (DHG) region. Finally, we find that dissolved carbon dioxide resulting from direct contact with the atmosphere at room temperature hardly affects the NV$^{-}$ neutralization.
description: 8 pages, 7 figures
A Macroscopic Mathematical Model For Cell Migration Assays Using A Real-Time Cell Analysis
Creators: name: Di Costanzo, Ezio
name: Ingangi, Vincenzo
name: Angelini, Claudia
name: Carfora, Maria Francesca
name: Carriero, Maria Vincenza
name: Natalini, Roberto
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cell Behavior (q-bio.CB)
subject: FOS: Biological sciences
subject: 92B05, 92C17, 35K99

description: Experiments of cell migration and chemotaxis assays have been classically performed in the so-called Boyden Chambers. A recent technology, xCELLigence Real Time Cell Analysis, is now allowing to monitor the cell migration in real time. This technology measures impedance changes caused by the gradual increase of electrode surface occupation by cells during the course of time and provide a Cell Index which is proportional to cellular morphology, spreading, ruffling and adhesion quality as well as cell number. In this paper we propose a macroscopic mathematical model, based on \emph{advection-reaction-diffusion} partial differential equations, describing the cell migration assay using the real-time technology. We carried out numerical simulations to compare simulated model dynamics with data of observed biological experiments on three different cell lines and in two experimental settings: absence of chemotactic signals (basal migration) and presence of a chemoattractant. Overall we conclude that our minimal mathematical model is able to describe the phenomenon in the real time scale and numerical results show a good agreement with the experimental evidences.
Travail de Bachelor 2023 Venissia Le Sommer Annexes
Creators: name: Venissia, Le Sommer
Publisher: name: Zenodo
Year: 2023
Subjects: héritage numérique, données, réseaux sociaux, décès

description: Annexes réalisées dans le cadre du travail de Bachelor "Gestion des traces numériques laissées après la mort physique des utilisateurs" par Venissia Le Sommer, 2023.
description: Ce Travail de Bachelor est réalisé dans le cadre de l'examen final de la Haute école de gestion de Genève, en vue de l'obtention du titre spécialiste HES en information documentaire.
Gravitational wave extraction in higher dimensional numerical relativity using the Weyl tensor
Creators: name: Cook, William G.
name: Sperhake, Ulrich
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Gravitational waves are one of the most important diagnostic tools in the analysis of strong-gravity dynamics and have been turned into an observational channel with LIGO's detection of GW150914. Aside from their importance in astrophysics, black holes and compact matter distributions have also assumed a central role in many other branches of physics. These applications often involve spacetimes with $D>4$ dimensions where the calculation of gravitational waves is more involved than in the four dimensional case, but has now become possible thanks to substantial progress in the theoretical study of general relativity in $D>4$. Here, we develop a numerical implementation of the formalism by Godazgar and Reall (Ref.[1]) -- based on projections of the Weyl tensor analogous to the Newman-Penrose scalars -- that allows for the calculation of gravitational waves in higher dimensional spacetimes with rotational symmetry. We apply and test this method in black-hole head-on collisions from rest in $D=6$ spacetime dimensions and find that a fraction $(8.19\pm 0.05)\times 10^{-4}$ of the Arnowitt-Deser-Misner mass is radiated away from the system, in excellent agreement with literature results based on the Kodama-Ishibashi perturbation technique. The method presented here complements the perturbative approach by automatically including contributions from all multipoles rather than computing the energy content of individual multipoles.
description: 30 pages, 2 figures
title: CRUISE REPORT (KY08-03 R/V 'Kaiyo')
Creators: name: Matsumoto, Hiroyuki
name: Sakuma, Atsushi
name: Araki, Eiichiro
Publisher: name: JAMSTEC
Year: 2008
Subjects: subject: Cruise report
subject: R/V KAIYO
subject: oceans

description: [CRUISE REPORT] This document is a preliminary report of KY08-03 Leg1 on R/V KAIYO from 2008-04-04 to 2008-04-15, KY08-03 Leg2 on R/V KAIYO from 2008-04-15 to 2008-04-27 and KY08-03 Leg3 on R/V KAIYO from 2008-04-29 to 2008-05-07.
On the spin excitation energy of the nucleon in the Skyrme model
Creators: name: Adam, C.
name: Sanchez-Guillen, J.
name: Wereszczynski, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the Skyrme model of nucleons and nuclei, the spin excitation energy of the nucleon is traditionally calculated by a fit of the rigid rotor quantization of spin/isospin of the fundamental Skyrmion (the hedgehog) to the masses of the nucleon and the Delta resonance. The resulting, quite large spin excitation energy of the nucleon of about $ 73\, \mbox{MeV}$ is, however, rather difficult to reconcile with the small binding energies of physical nuclei, among other problems. Here we argue that a more reliable value for the spin excitation energy of the nucleon, compatible with many physical constraints, is about $ 16\, \mbox{MeV}$. The fit of the rigid rotor to the Delta, on the other hand, is problematic in any case, because it implies the use of a nonrelativistic method for a highly relativistic system.
description: Latex, 8 pages, no figures
Optimal control for a robotic exploration, pick-up and delivery problem
Creators: name: Nenchev, Vladislav
name: Cassandras, Christos G.
name: Raisch, Jörg
Publisher: name: arXiv
Year: 2016
Subjects: subject: Systems and Control (eess.SY)
subject: Artificial Intelligence (cs.AI)
subject: Robotics (cs.RO)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: This paper addresses an optimal control problem for a robot that has to find and collect a finite number of objects and move them to a depot in minimum time. The robot has fourth-order dynamics that change instantaneously at any pick-up or drop-off of an object. The objects are modeled by point masses with a-priori unknown locations in a bounded two-dimensional space that may contain unknown obstacles. For this hybrid system, an Optimal Control Problem (OCP) is approximately solved by a receding horizon scheme, where the derived lower bound for the cost-to-go is evaluated for the worst and for a probabilistic case, assuming a uniform distribution of the objects. First, a time-driven approximate solution based on time and position space discretization and mixed integer programming is presented. Due to the high computational cost of this solution, an alternative event-driven approximate approach based on a suitable motion parameterization and gradient-based optimization is proposed. The solutions are compared in a numerical example, suggesting that the latter approach offers a significant computational advantage while yielding similar qualitative results compared to the former. The methods are particularly relevant for various robotic applications like automated cleaning, search and rescue, harvesting or manufacturing.
description: 14 pages, 23 figures
title: NT09-01 Deep Alkaline Serpentine Aquifer Exploration of South Charmorro Seamount
Creators: name: Takai, Ken
Publisher: name: JAMSTEC
Year: 2009
Subjects: subject: Cruise report
subject: R/V NATSUSHIMA
subject: oceans

description: [CRUISE REPORT] This document is a preliminary report of NT09-01 on R/V NATSUSHIMA from 2009-01-08 to 2009-01-27.
Slowly decaying resonances of charged massive scalar fields in the Reissner-Nordström black-hole spacetime
Creators: name: Hod, Shahar
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We determine the characteristic timescales associated with the linearized relaxation dynamics of the composed Reissner-Nordström-black-hole-charged-massive-scalar-field system. To that end, the quasinormal resonant frequencies $\{ω_n(μ,q,M,Q)\}_{n=0}^{n=\infty}$ which characterize the dynamics of a charged scalar field of mass $μ$ and charge coupling constant $q$ in the charged Reissner-Nordström black-hole spacetime of mass $M$ and electric charge $Q$ are determined {\it analytically} in the eikonal regime $1\ll Mμ
description: 8 pages
Stimulated Raman scattering in the relativistic regime in near-critical plasmas
Creators: name: Moreau, J. G.
name: d'Humières, E.
name: Nuter, R.
name: Tikhonchuk, V. T.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Interaction of a high intensity short laser pulse with near-critical plasmas allows to achieve extremely high coupling efficiency and transfer laser energy to energetic ions. One dimensional Particle-In-Cell (PIC) simulations are considered to detail the processes involved in the energy transfer. A confrontation of the numerical results with the theory highlights a key role played by the process of stimulated Raman scattering in the relativistic regime. The interaction of a 1 ps laser pulse (I $\sim$ 6.10$^{18}$ W.cm$^2$) with an under-critical (0.5 $n_c$) homogeneous plasma leads to a very high plasma absorption reaching 68 % of the laser pulse energy. This permits a homogeneous electron heating all along the plasma and an efficient ion acceleration at the plasma edges and in cavities.
description: 25 pages, 10 figures
Diffusion on Delone sets
Creators: name: Haeseler, Sebastian
name: Huang, Xueping
name: Lenz, Daniel
name: Pogorzelski, Felix
Publisher: name: arXiv
Year: 2016
Subjects: subject: Spectral Theory (math.SP)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We consider graphs associated to Delone sets in Euclidean space. Such graphs arise in various ways from tilings. Here, we provide a unified framework. In this context, we study the associated Laplace operators and show Gaussian heat kernel bounds for their semigroups. These results apply to both metric and discrete graphs.
description: 15 pages
A pure hydrodynamic instability in shear flows and its application to astrophysical accretion disks
Creators: name: Nath, Sujit Kumar
name: Mukhopadhyay, Banibrata
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We provide the possible resolution for the century old problem of hydrodynamic shear flows, which are apparently stable in linear analysis but shown to be turbulent in astrophysically observed data and experiments. This mismatch is noticed in a variety of systems, from laboratory to astrophysical flows. There are so many uncountable attempts made so far to resolve this mismatch, beginning with the early work of Kelvin, Rayleigh, and Reynolds towards the end of the nineteenth century. Here we show that the presence of stochastic noise, whose inevitable presence should not be neglected in the stability analysis of shear flows, leads to pure hydrodynamic linear instability therein. This explains the origin of turbulence, which has been observed/interpreted in astrophysical accretion disks, laboratory experiments and direct numerical simulations. This is, to the best of our knowledge, the first solution to the long standing problem of hydrodynamic instability of Rayleigh stable flows.
description: 14 pages including 10 figures; accepted for publication in ApJ
An estimate of the second moment of a sampling of the Riemann zeta function on the critical line
Creators: name: Jo, Sihun
name: Yang, Minsuk
Publisher: name: arXiv
Year: 2016
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: We investigate the second moment of a random sampling $ζ(1/2+iX_t)$ of the Riemann zeta function on the critical line. Our main result states that if $X_t$ is an increasing random sampling with gamma distribution, then for all sufficiently large $t$, \[\mathbb{E} |ζ(1/2+iX_t)|^2 = \log t + O(\sqrt{\log t}\log\log t).\]
description: 13 pages
Characterization of Hourly Radar-Based Quantitative Precipitation Estimation
Creators: name: H.A, Syed
name: Kalapureddy, M.C.R
Publisher: name: Zenodo
Year: 2021
Subjects: Quantitative Precipitation Estimation, Radar, QPE, Max-Z

description: Progress in rainfall estimation is essential for advancing science and applications in weather and water budget studies and forecasting natural hazards due to extreme rainfall events at all scales, from regional to global. Doppler Weather Radar (DWR) technology enables us to measure areal precipitation close to the ground, and quantitative precipitation estimation (QPE) is one of the essential radar applications. Hydrological forecasting and early warning systems require accurate, timely, and reliable precipitation observations. Weather radar-based quantitative precipitation amount (QPA) brought in this report as traditional well-known surface rainfall accumulation (SRA). SRA has traditionally been computed using radar reflectivity measurements associated with surface rainfall intensity, known as the Z-R relation. An improved algorithm for categorizing radar retrieved rainfall into convective and stratiform rain has been the key for interpolating SRA for inferring it as QPA. This estimated SRA / QPA from the IITM's X-Band Radar situated over a Western Ghats site used for its hourly evolutions has been compared with ground truth. The radar volume scan data at various elevation angles PPI has been the basis for generating gridded form of radar data using in-house developed CAPPI at various heights, i.e., the 3D format of radar data display. The radar-retrieved QPA/SRA map produced better results than the traditional fixed Marshal-Palmer relationship, which was confirmed using the GPM level 3b precipitation datasets and three hourly TRMM precipitation datasets.
description: {"references": ["Syed, Hamid Ali; Nagwekar, Tanvi (2021). IMD Radar Network. figshare. Dataset. https://doi.org/10.6084/m9.figshare.16945276.v4", "Syed, Hamid Ali, Sayyed, Imran, Kalapureddy, Madhu Chandra R, and Grandhi, Kishore Kumar, 2023: PyScanCf \u2013 The library for single sweep datasets of IMD weather radars. https://doi.org/10.5281/zenodo.8330187."]}
SDSS-IV MaNGA: Faint quenched galaxies I- Sample selection and evidence for environmental quenching
Creators: name: Penny, Samantha J.
name: Masters, Karen L.
name: Weijmans, Anne-Marie
name: Westfall, Kyle B.
name: Bershady, Matthew A.
name: Bundy, Kevin
name: Drory, Niv
name: Falcón-Barroso, Jesús
name: Law, David
name: Nichol, Robert C.
name: Thomas, Daniel
name: Bizyaev, Dmitry
name: Brownstein, Joel R.
name: Freischlad, Gordon
name: Gaulme, Patrick
name: Grabowski, Katie
name: Kinemuchi, Karen
name: Malanushenko, Elena
name: Malanushenko, Viktor
name: Oravetz, Daniel
name: Roman-Lopes, Alexandre
name: Pan, Kaike
name: Simmons, Audrey
name: Wake, David A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Using kinematic maps from the Sloan Digital Sky Survey (SDSS) Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey, we reveal that the majority of low-mass quenched galaxies exhibit coherent rotation in their stellar kinematics. Our sample includes all 39 quenched low-mass galaxies observed in the first year of MaNGA. The galaxies are selected with $M_{r} > -19.1$, stellar masses $10^{9}$ M$_{\odot} < M_{\star} < 5\times10^{9}$ M$_{\odot}$, EW$_{Hα} <2$ Å, and all have red colours $(u-r)>1.9$. They lie on the size-magnitude and $σ$-luminosity relations for previously studied dwarf galaxies. Just six ($15\pm5.7$ per cent) are found to have rotation speeds $v_{e,rot} < 15$ km s$^{-1}$ at $\sim1$ $R_{e}$, and may be dominated by pressure support at all radii. Two galaxies in our sample have kinematically distinct cores in their stellar component, likely the result of accretion. Six contain ionised gas despite not hosting ongoing star formation, and this gas is typically kinematically misaligned from their stellar component. This is the first large-scale Integral Field Unit (IFU) study of low mass galaxies selected without bias against low-density environments. Nevertheless, we find the majority of these galaxies are within $\sim1.5$ Mpc of a bright neighbour ($M_{K} < -23$; or M$_{\star} > 5\times10^{10}$ M$_{\odot}$), supporting the hypothesis that galaxy-galaxy or galaxy-group interactions quench star formation in low-mass galaxies. The local bright galaxy density for our sample is $ρ_{proj} = 8.2\pm2.0$ Mpc$^{-2}$, compared to $ρ_{proj} = 2.1\pm0.4$ Mpc$^{-2}$ for a star forming comparison sample, confirming that the quenched low mass galaxies are preferentially found in higher density environments.
description: 17 pages, 9 figures, accepted for publication in MNRAS
A-Ward_p\b{eta}: Effective hierarchical clustering using the Minkowski metric and a fast k -means initialisation
Creators: name: de Amorim, Renato Cordeiro
name: Makarenkov, Vladimir
name: Mirkin, Boris
Publisher: name: arXiv
Year: 2016
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: In this paper we make two novel contributions to hierarchical clustering. First, we introduce an anomalous pattern initialisation method for hierarchical clustering algorithms, called A-Ward, capable of substantially reducing the time they take to converge. This method generates an initial partition with a sufficiently large number of clusters. This allows the cluster merging process to start from this partition rather than from a trivial partition composed solely of singletons. Our second contribution is an extension of the Ward and Ward p algorithms to the situation where the feature weight exponent can differ from the exponent of the Minkowski distance. This new method, called A-Ward p\b{eta} , is able to generate a much wider variety of clustering solutions. We also demonstrate that its parameters can be estimated reasonably well by using a cluster validity index. We perform numerous experiments using data sets with two types of noise, insertion of noise features and blurring within-cluster values of some features. These experiments allow us to conclude: (i) our anomalous pattern initialisation method does indeed reduce the time a hierarchical clustering algorithm takes to complete, without negatively impacting its cluster recovery ability; (ii) A-Ward p\b{eta} provides better cluster recovery than both Ward and Ward p.
Waveguide photonic limiters based on topologically protected resonant modes
Creators: name: Kuhl, U.
name: Mortessagne, F.
name: Makri, E.
name: Vitebskiy, I.
name: Kottos, T.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We propose a concept of chiral photonic limiters utilising topologically protected localised midgap defect states in a photonic waveguide. The chiral symmetry alleviates the effects of structural imperfections and guaranties a high level of resonant transmission for low intensity radiation. At high intensity, the light-induced absorption can suppress the localised modes, along with the resonant transmission. In this case the entire photonic structure becomes highly reflective within a broad frequency range, thus increasing dramatically the damage threshold of the limiter. Here we demonstrate experimentally the principle of operation of such photonic structures using a waveguide consisting of coupled dielectric microwave resonators.
description: 6 pages, 4 figures
Evidence for multiple populations in the intermediate age cluster Lindsay 1 in the SMC
Creators: name: Hollyhead, K
name: Kacharov, N
name: Lardo, C
name: Bastian, N
name: Hilker, M
name: Rejkuba, M
name: Koch, A
name: Grebel, E K
name: Georgiev, I
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Lindsay 1 is an intermediate age (approx 8 Gyr) massive cluster in the Small Magellanic Cloud (SMC). Using VLT FORS2 spectra of 16 probable cluster members on the lower RGB of the cluster, we measure CN and CH band strengths (at 3883 and 4300 Angstroms respectively), along with carbon and nitrogen abundances and find that a sub-population of stars has significant nitrogen enrichment. A lack of spread in carbon abundances excludes evolutionary mixing as the source of this enrichment, so we conclude that this is evidence of multiple populations. Therefore, L1 is the youngest cluster to show such variations, implying that the process triggering the onset of multiple populations must operate until at least redshift ~1.
description: 5 pages, accepted for publication in MNRAS Letters
Jupiter's Para-H$_2$ Distribution from SOFIA/FORCAST and Voyager/IRIS 17-37 $μ$m Spectroscopy
Creators: name: Fletcher, Leigh N.
name: de Pater, I.
name: Reach, W. T.
name: Wong, M.
name: Orton, G. S.
name: Irwin, P. G. J.
name: Gehrz, R. D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Spatially resolved maps of Jupiter's far-infrared 17-37 $μ$m hydrogen-helium collision-induced spectrum were acquired by the FORCAST instrument on the Stratospheric Observatory for Infrared Astronomy (SOFIA) in May 2014. Spectral scans in two grisms covered the broad S(0) and S(1) absorption lines, in addition to contextual imaging in eight broad-band filters (5-37 $μ$m) with spatial resolutions of 2-4". The spectra were inverted to map the zonal-mean temperature and para-H$_2$ distribution ($f_p$, the fraction of the para spin isomer with respect to the ortho spin isomer) in Jupiter's upper troposphere (the 100-700 mbar range). We compared these to a reanalysis of Voyager-1 and -2 IRIS spectra covering the same spectral range. Para-H$_2$ increases from equator to pole, with low-$f_p$ air at the equator representing sub-equilibrium conditions (i.e., less para-H$_2$ than expected from thermal equilibration), and high-$f_p$ air and possible super-equilibrium at higher latitudes. In particular, we confirm the continued presence of a region of high-$f_p$ air at high northern latitudes discovered by Voyager/IRIS, and an asymmetry with generally higher $f_p$ in the north than in the south. We note that existing collision-induced absorption databases lack opacity from (H$_2$)$_2$ dimers, leading to under-prediction of the absorption near the S(0) and S(1) peaks. There appears to be no spatial correlation between para-H$_2$ and tropospheric ammonia, phosphine and cloud opacity derived from Voyager/IRIS at mid-infrared wavelengths (7-15 $μ$m). We note, however, that para-H$_2$ tracks the similar latitudinal distribution of aerosols within Jupiter's upper tropospheric and stratospheric hazes observed in reflected sunlight, suggesting that catalysis of hydrogen equilibration within the hazes (and not the main clouds) may govern the equator-to-pole gradient. [Abridged]
description: 23 pages, 14 figures, accepted for publication in Icarus