cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
An advanced data fabric architecture leveraging homomorphic encryption and federated learning
Creators: name: Rieyan, Sakib Anwar
name: News, Md. Raisul Kabir
name: Rahman, A. B. M. Muntasir
name: Khan, Sadia Afrin
name: Zaarif, Sultan Tasneem Jawad
name: Alam, Md. Golam Rabiul
name: Hassan, Mohammad Mehedi
name: Ianni, Michele
name: Fortino, Giancarlo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cryptography and Security (cs.CR)
subject: Artificial Intelligence (cs.AI)
subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Data fabric is an automated and AI-driven data fusion approach to accomplish data management unification without moving data to a centralized location for solving complex data problems. In a Federated learning architecture, the global model is trained based on the learned parameters of several local models that eliminate the necessity of moving data to a centralized repository for machine learning. This paper introduces a secure approach for medical image analysis using federated learning and partially homomorphic encryption within a distributed data fabric architecture. With this method, multiple parties can collaborate in training a machine-learning model without exchanging raw data but using the learned or fused features. The approach complies with laws and regulations such as HIPAA and GDPR, ensuring the privacy and security of the data. The study demonstrates the method's effectiveness through a case study on pituitary tumor classification, achieving a significant level of accuracy. However, the primary focus of the study is on the development and evaluation of federated learning and partially homomorphic encryption as tools for secure medical image analysis. The results highlight the potential of these techniques to be applied to other privacy-sensitive domains and contribute to the growing body of research on secure and privacy-preserving machine learning.
Scaling laws for weakly disordered 1D flat bands
Creators: name: Luck, J. M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate Anderson localization on various 1D structures having flat bands. The main focus is on the scaling laws obeyed by the localization length at weak disorder in the vicinity of flat-band energies. A careful distinction is made between situations where the scaling functions are universal (i.e., depend on the disorder distribution only through its width) and where they keep depending on the full shape of the disorder distribution, even in the weak-disorder scaling regime. Three examples are analyzed in detail. On the stub chain, one central flat band is isolated from two lateral dispersive ones. The localization length remains microscopic at weak disorder and exhibits disorder-specific features. On the pyrochlore ladder, the two flat bands are tangent to a dispersive one. The localization length diverges with exponent 1/2 and a non-universal scaling law, whose dependence on the disorder distribution is predicted analytically. On the diamond chain, a central flat band intersects two symmetric dispersive ones. The localization length exhibits two successive scaling regimes, diverging first with exponent 4/3 and a universal law, and then (i.e., further away from the pristine flat band) with exponent 1 and a non-universal law. Both scaling functions are also derived by analytical means.
description: 29 pages, 8 figures, 2 tables
Directed polymers in a random medium: a variational approach
Creators: name: Garel, T.
name: Orland, H.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: A disorder-dependent Gaussian variational approach is applied to the problem of a $d$ dimensional polymer chain in a random medium (or potential). Two classes of variational solutions are obtained. For $d<2$, these two classes may be interpreted as domain and domain wall. The critical exponent $ν$ describing the polymer width is $ν={1\over (4-d)}$ (domain solution) or $ν={3\over (d+4)}$ (domain wall solution). The domain wall solution is equivalent to the (full) replica symmetry breaking variational result. For $d>2$, we find $ν={1\over 2}$. No evidence of a phase transition is found for $2< d< 4$: one of the variational solutions suggests that the polymer chain breaks into Imry-Ma segments, whose probability distribution is calculated. For $d>4$, the other variational solution undergoes a phase transition, which has some similarity with B. Derrida's random energy models.
description: Plain latex file
Additional file 1 of Persistent impact of antenatal maternal anaemia on child brain structure at 6–7 years of age: a South African child health study
Creators: name: Ringshaw, Jessica E.
name: Hendrikse, Chanelle J.
name: Wedderburn, Catherine J.
name: Bradford, Layla E.
name: Williams, Simone R.
name: Nyakonda, Charmaine N.
name: Subramoney, Sivenesi
name: Lake, Marilyn T.
name: Burd, Tiffany
name: Hoffman, Nadia
name: Roos, Annerine
name: Narr, Katherine L.
name: Joshi, Shantanu H.
name: Williams, Steven C. R.
name: Zar, Heather J.
name: Stein, Dan J.
name: Donald, Kirsten A.
Publisher: name: figshare
Year: 2025
Subjects: Medicine
Cell Biology
Neuroscience
Biotechnology
Environmental Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Science Policy
Computational Biology

description: Supplementary Material 1: Additional File 1.
Approximating Diffeomorphisms by Elements of Thompson's Groups F and T
Creators: name: Stiegemann, Deniz E.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mathematical Physics (math-ph)
subject: Group Theory (math.GR)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We show how to approximate diffeomorphisms of the closed interval and the circle by elements of Thompson's groups $F$ and $T$, respectively. This is relevant in the context of Jones' continuum limit of discrete multipartite systems and its dynamics.
description: 7 pages
Cazira similis Distant 1902
Creators: name: Roell, Talita
name: Lemaître, Valérie A.
name: Webb, Michael D.
name: Campos, Luiz A.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Pentatomidae
Cazira
Cazira similis

description: similis (Cazira) Distant 1902: 245–246. [Figs 185–187]
 Original data: “Length 8½ to 11; breadth between pronotal angles 5 to 6 millim.”; “ Hab. Naga Hills (Doherty).” [syntypes (range of measurements)]
SYNTYPE ♁: blue-margined syntype disc; red-margined type [H. T.] disc “Naga Hills (Doherty)”; “ similis Dist. [Distant’s handwriting]”; “Distant Coll. 1911–383.”; “NHMUK 010592147”. Fourth and fifth right antennomeres, second to fifth left antennomeres, left middle leg, and posterior legs missing (Fig. 185).
SYNTYPE ♁: blue-margined syntype disc; “Naga Hills (Doherty)”; “Distant Coll. 1911–383.”; “NHMUK 010592148”. Fourth and fifth right antennomeres, third to fifth left antennomeres, and left anterior leg missing (Fig. 186).
SYNTYPE ♁: blue-margined syntype disc; “Naga Hills (Doherty)”; “Distant Coll. 1911–383.”; “NHMUK 010592149”. Fifth right and left antennomeres, and left middle leg missing (Fig. 187).
 Current status: Cazira similis Distant, 1902.
description: Published as part of Roell, Talita, Lemaître, Valérie A., Webb, Michael D. & Campos, Luiz A., 2023, An annotated and illustrated Type Catalogue of the predacious Shieldbugs (Hemiptera: Heteroptera: Pentatomidae: Asopinae) in the Collection of the Natural History Museum, London, pp. 1-105 in Zootaxa 5232 (1) on page 78, DOI: 10.11646/zootaxa.5232.1.1, http://zenodo.org/record/7609794
Hadron colliders as the ``neutralino factory'': Search for a slow decay of the lightest neutralino at the CERN LHC
Creators: name: Maki, K.
name: Orito, S.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Prospects are examined for the detection of a slow decay of the lightest neutralino (or any other longlived particles) at the CERN LHC and at Very Large Hadron Collider (VLHC). We first point out that such hadron colliders will become the ``neutralino factory'' producing 10^6--10^9 neutralinos/yr, if gluinos and/or squarks actually exist below O(1) TeV. The lightest neutralino (\neu), usually assumed to be stable, will be unstable if lighter superparticles such as the gravitino (\gra) or axino (\axi) exist, or R-parity is not conserved. The decay signal would, however, be missed in usual collider experiments, particularly when the decay mostly occurs outside the detector. In order to search for such a slow decay of \neu, we propose a dedicated experiment where the collision products are dumped by a thick shield, which is followed by a long decay tunnel. The decay product of \neu can be detected by a detector located at the end of the tunnel. The slow arrival time and the large off angle (to the direction of the interaction point) of the decay product will provide a clear signature of slowly decaying \neu's. One can explore the decay length (cτ) in a wide range, i.e., 0.2 m to 1x10^5 km for \mneu=25 GeV and 1 m to 2 km for \mneu=200 GeV at the LHC. This corresponds to the range of the SUSY breaking scale \rtF=2x10^5 to 2x10^7 GeV in case of the \neu\toγ\gra decay predicted in gauge-mediated SUSY breaking models. At VLHC, one can extend the explorable range of \mneu up to 1000 GeV, and that of \rtF up to 1x10^8 GeV. In case of the \neu\toγ\axi decay, the Peccei- Quinn symmetry breaking scale F_a can be explored up to 5x10^11 GeV. The mass of the decaying particle can be determined by using the correlation between the energy and the arrival time of the decay product.
description: 44 pages (LaTeX) including 26 figures, one reference added
Variational Density Functional Perturbation Theory for Metals
Creators: name: Gonze, Xavier
name: Rostami, Samare
name: Tantardini, Christian
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Density functional perturbation theory is a well-established method to study responses of molecules and solids, especially responses to atomic displacements or to different perturbing fields (electric, magnetic). Like for density functional theory, the treatment of metals is delicate, due to the Fermi-Dirac statistics and electronic bands crossing the Fermi energy. At zero temperature, there is an abrupt transition from occupied states to unoccupied ones, usually addressed with smearing schemes. Also, at finite temperature, fractional occupations are present, and the occupation numbers may vary in response to the perturbation. The present work establishes the characteristics of density functional perturbation theory stemming from the underlying variational principle, in the case of metals. After briefly reviewing variational density functional theory for metals, the convexity of the entropy function of the occupation number is analyzed, and, at finite temperature, the benefit of resmearing the Fermi-Dirac broadening with the Methfessel-Paxton one is highlighted. Then the variational expressions for the second-order derivative of the free energy are detailed, exposing the different possible gauge choices. The influence of the inaccuracies in the unperturbed wavefunctions from the prior density functional theory calculation is studied. The whole formalism is implemented in the ABINIT software package.
Additional file 2: of Do social factors and country of origin contribute towards explaining a “Latina paradox” among immigrant women giving birth in Germany?
Creators: name: Zolitschka, Kim
name: Miani, Céline
name: Breckenkamp, Jürgen
name: Brenne, Silke
name: Borde, Theda
name: David, Matthias
name: Razum, Oliver
Publisher: name: figshare
Year: 2019
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy

description: Chi Square Test for premature birth, by region of origin, Berlin/Germany, 2011/12. Results from Chi Square Test for premature birth, by country of origin (DOCX 13 kb)
Cazira similis Distant 1902
Creators: name: Roell, Talita
name: Lemaître, Valérie A.
name: Webb, Michael D.
name: Campos, Luiz A.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Pentatomidae
Cazira
Cazira similis

description: similis (Picromerus) Distant 1883: 421. [Figs 188–189]
 Original data: “ Hab. Hakodatè.” [syntype (s)]
SYNTYPE ♁: blue-margined syntype disc; red-margined type disc; “ Japan (Lewis)”; “ similis (Dist.) [Distant’s handwriting]”; “Ha Ko”; “NHMUK 010592296”. Specimen well preserved (Fig. 188).
NON-TYPE ♀: “Hakodatè / 88 31”; “NHMUK 010592298”. Specimen well preserved (Fig. 189).
 Current status: Picromerus lewisi Scott, 1874 (synonymised by Josifov & Kerzhner 1978: 180).
 Notes: Distant (1883: 421) had noted “In colour, markings, and general appearance almost undistinguishable from P. lewisi Scott, [...]” and indeed Picromerus similis Distant was synonymised to P. lewisi Scott by Josifov & Kerzhner (1978). The female specimen was received at NHMUK in 1888 and was, in all likelihood, collected the previous year, four years after the original description; it cannot be a syntype but is a topotype, contemporary to the male syntype.
description: Published as part of Roell, Talita, Lemaître, Valérie A., Webb, Michael D. & Campos, Luiz A., 2023, An annotated and illustrated Type Catalogue of the predacious Shieldbugs (Hemiptera: Heteroptera: Pentatomidae: Asopinae) in the Collection of the Natural History Museum, London, pp. 1-105 in Zootaxa 5232 (1) on page 78, DOI: 10.11646/zootaxa.5232.1.1, http://zenodo.org/record/7609794
Neutrino oscillation physics with a neutrino factory
Creators: name: De Rujula, A.
name: Gavela, M. B.
name: Hernandez, P.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Data from atmospheric and solar neutrinos indicate that there are at least three neutrino types involved in oscillation phenomena. Even if the corresponding neutrino mass scales are very different, the inevitable reference to mixing between more than two neutrino types has profound consequences on the planning of the accelerator experiments suggested by these results. We discuss the measurement of mixing angles and CP phases in the context of the neutrino beam emanating from a {\it neutrino factory}: the straight sections of a muon storage ring. We emphasize the importance of charge identification. The appearance of wrong sign muons in a long baseline experiment may provide a powerful test of neutrino oscillations in the mass-difference range indicated by atmospheric-neutrino observations.
description: Superkamiokande-allowed domains corrected in figures
Third Nearest WZ Sge-Type Dwarf Nova candidate ASASSN-14dx Classified on the Basis of Gaia Data Release 2
Creators: name: Isogai, Keisuke
name: Kato, Taichi
name: Imada, Akira
name: Ohshima, Tomohito
name: Kojiguchi, Naoto
name: Ohnishi, Ryuhei
name: Hambsch, Franz-Josef
name: Monard, Berto
name: Kiyota, Seiichiro
name: Nishimura, Hideo
name: Nogami, Daisaku
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: ASASSN-14dx showed an extraordinary outburst whose features are the small outburst amplitude (~ 2.3 mag) and long duration (> 4 years). Because we found a long observational gap of 123 d before the outburst detection, we propose that the main outburst plateau was missed and that this outburst is just a "fading tail" often seen after the WZ Sge-type superoutbursts. In order to distinguish between WZ Sge and SU UMa-type dwarf novae (DNe), we investigated Gaia DR2 statistically. We applied a logistic regression model and succeeded in classifying by using absolute Gaia magnitudes $M_{G}$ and Gaia colors $G_{\rm BP}-G_{\rm RP}$. Our new classifier also suggests that ASASSN-14dx is the best candidate of a WZ Sge-type DN. We estimated distances from the earth of known WZ Sge stars by using Gaia DR2 parallaxes. The result indicates that ASASSN-14dx is the third nearest WZ Sge star (next to WZ Sge and V455 And), and hence the object can show the third brightest WZ Sge-type superoutburst whose maximum is $V$ = 8-9 mag.
description: 16 pages, 4 figures, accepted for publication in PASJ, http://www.kusastro.kyoto-u.ac.jp/~isogai/ASASSN-14dx/
Cross-CPP flyer– presenting an Ecosystem for Provisioning, Consolidating, and Analysing Big Data from Cyber-Physical Products
Creators: name: Cross-CPP Consortium
Publisher: name: Zenodo
Year: 2019
Subjects: Big Data from cross-sectorial data streams Cyber Physical Products
Big Data Marketplace
Cross-sectorial services

description: The Cross-CPP flyer presents the project in a nutshell, giving an overview of the main objectives, architecture and the 3 use cases demonstrating the project results.
YASHIRIN IQTISODIYOTNI QISQARTIRISH MASALALARI
Creators: name: Turopova, Nigora
name: Jumayev, Ramziddin
Publisher: name: Zenodo
Year: 2024

description: Ushbu tezisda yashirin iqisodiyot tushunchasi, yashirin iqtisodiyotning mamlakatimizda tutgan o'rni, u keltiradigan zararlar hagida ma'lumotlar keltirilgan. Bundan tashqari xorijiy davlatlarda o'tkazilgan yashirin iqtisodiyot tadgigotlari borasida ham mulohaza gilingan.
On the role of electromagnetic phenomena in some atmospheric processes
Creators: name: Artekha, S. N.
name: Belyan, A. V.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: The crucial part of electromagnetic phenomena in many atmospheric processes is verified by systematized data. The multilayered charged system of clouds represents some dynamically equilibrium structure kept by the ionic and polarization forces. The estimates of acting forces are presented and it is demonstrated the necessity to take into account the plasma-like subsystems, effect on some atmospheric phenomena, including the formation and the maintenance of the structure and characteristics of their movement.
description: 27 pages, 4 figures, 2 tables
Solving All-Pairs Shortest-Paths Problem in Large Graphs Using Apache Spark
Creators: name: Schoeneman, Frank
name: Zola, Jaroslaw
Publisher: name: arXiv
Year: 2019
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Algorithms for computing All-Pairs Shortest-Paths (APSP) are critical building blocks underlying many practical applications. The standard sequential algorithms, such as Floyd-Warshall and Johnson, quickly become infeasible for large input graphs, necessitating parallel approaches. In this work, we provide detailed analysis of parallel APSP performance on distributed memory clusters with Apache Spark. The Spark model allows for a portable and easy to deploy distributed implementation, and hence is attractive from the end-user point of view. We propose four different APSP implementations for large undirected weighted graphs, which differ in complexity and degree of reliance on techniques outside of pure Spark API. We demonstrate that Spark is able to handle APSP problems with over 200,000 vertices on a 1024-core cluster, and can compete with a naive MPI-based solution. However, our best performing solver requires auxiliary shared persistent storage, and is over two times slower than optimized MPI-based solver.
X-ray induced persistent photoconductivity in Si-doped Al$_{0.35}$Ga$_{0.65}$As
Creators: name: Soh, Yeong-Ah
name: Aeppli, G.
name: Zimmermann, Frank M.
name: Isaacs, E. D.
name: Frenkel, Anatoly I.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We demonstrate that X-ray irradiation can be used to induce an insulator-metal transition in Si-doped Al$_{0.35}$Ga$_{0.65}$As, a semiconductor with {\it DX} centers. The excitation mechanism of the {\it DX} centers into their shallow donor state was revealed by studying the photoconductance along with fluorescence. The photoconductance as a function of incident X-ray energy exhibits an edge both at the Ga and As K-edge, implying that core-hole excitation of Ga and As are efficient primary steps for the excitation of {\it DX} centers. A high quantum yield ($\gg 1$) suggests that the excitation is indirect and nonlocal, due to secondary electrons, holes, and fluorescence photons.
description: 3 pages of text, 6 figures. An error in Fig.5 was detected, so we corrected it
Podisus smithi
Creators: name: Roell, Talita
name: Lemaître, Valérie A.
name: Webb, Michael D.
name: Campos, Luiz A.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Pentatomidae
Podisus
Podisus smithi

description: smithi (Podisus) Distant 1889: 319. [Fig. 190]
 Original data: “ Hab. MEXICO, Orizaba (H. H. Smith & F. D. G.).” [syntype (s)]
LECTOTYPE ♀ (designated by Thomas 1992: 97): purple-margined lectotype disc; red-margined type disc; “Orizaba. H. H. S. & F. D. G. Dec 1887.”; “B.C.A., Hem. I. Podisus smithi Dist. ”; “NHMUK 010592331”. Fourth and fifth right and left antennomeres missing (Fig. 190).
 Current status: Podisus nigriventris Distant, 1880 (synonymised by Thomas 1992: 97).
 Note: Thomas (1992: 97) explained: “The type of Podisus smithi, a female, was located in the BMNH. It is labeled: (a) “Type,” (b) “Orizaba HHS + FDG Dec 1887 BCA Hem. Podisus smithi Dist. ”” From Distant’s original description, we do not know whether Distant had one or more specimens, nor the sex. We have found only one specimen in the collection but cannot be sure it was the only one Distant had. By giving its labels data and calling the specimen “the type”, Thomas designated it as the lectotype by inference of “the type” (ICZN 1999: Art. 74.6).
description: Published as part of Roell, Talita, Lemaître, Valérie A., Webb, Michael D. & Campos, Luiz A., 2023, An annotated and illustrated Type Catalogue of the predacious Shieldbugs (Hemiptera: Heteroptera: Pentatomidae: Asopinae) in the Collection of the Natural History Museum, London, pp. 1-105 in Zootaxa 5232 (1) on page 79, DOI: 10.11646/zootaxa.5232.1.1, http://zenodo.org/record/7609794
Additional file 2: of â My gut feeling is we could do more...â a qualitative study exploring staff and patient perspectives before and after the implementation of an online prostate cancer-specific holistic needs assessment
Creators: name: Clarke, Amy
name: Roscoe, Julia
name: Appleton, Rebecca
name: Dale, Jeremy
name: Nanton, Veronica
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer

description: Thematic map for Phase 2 interviews. Thematic map to visualise the relationship between themes in Phase 2. (PDF 17 kb)
The Politicization of Asylum Seekers and Other Immigrant Groups in a Comparative Perspective
Creators: name: Rosenberger, Sieglinde
name: Ruedin, Didier
Publisher: name: Zenodo
Year: 2017
Subjects: politicization
immigration
asylum seekers
media
claims-making
refugees

description: Rosenberger, Sieglinde, and Didier Ruedin. 2017. ‘The Politicization of Asylum Seekers and Other Immigrant Groups in a Comparative Perspective’. In Asylrecht Als Experimentierfeld: Eine Analyse Seiner Besonderheiten Aus Vergleichender Sicht, edited by Franz Merli and Magdalena Pöschl, 13–26. Wien: Verlag Manz.
Community Workshop on Metrics for FAIR Software
Creators: name: Chue Hong, Neil
name: Gruenpeter, Morane
name: Priddy, Mike
name: Antonioletti, Mario
Publisher: name: Zenodo
Year: 2023

description: The materials and notes from a Community Workshop on Metrics for FAIR Software held by the FAIR Impact project at the Research Data Alliance 20th Plenary Meeting.
Spin Diffusion in 2D XY Ferromagnet with Dipolar Interaction
Creators: name: Kashuba, A.
name: Abanov, Ar.
name: Pokrovsky, V. L.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: In the ordered phase of 2D XY ferromagnet the dipolar interaction between spins induces a strong, relevant interaction between spin-waves. We study quasi-excitations of the interacting spin-wave 'liquid' in the long wavelength limit. We employ the Janssen-De-Dominicis method for classical Langevin equation to find the transformation of the spin-wave excitation into a new soft-mode excitation in the intermediate range of wavelengths; and into an anomalous anisotropic diffusion mode excitation at long wavelengths. The dissipation of a spin-wave at short wavelengths is found to be highly anisotropic.
description: 10 pages LaTex paper and one PostScript figure
On the Chemical Composition of the Evolved Very Bright Metal-Poor Star HD 1936
Creators: name: Çalışkan, Şeyma
name: Alazzawi, Jannat Mushreq Kamil
name: Nasolo, Yahya
Publisher: name: arXiv
Year: 2024
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present chemical abundances of the very bright metal-poor star HD~1936 based on high-resolution and high SNR spectra from AUKR. We obtain the abundances of 29 atomic species with atomic numbers between 3 and 63. In this context, the derived lithium abundance of 1.01 is consistent with the thin Li plateau observed in lower red giant branch stars. The star is a carbon-normal with the ratio of -0.31, just like other low-luminosity red giants on the thin Li plateau. We find the ratios of [Eu/Fe]=0.43 and [Ba/Eu]=-0.64, indicating very little s-process contamination. These ratios allow us to classify the star as a moderately r-process-enhanced (r-I) metal-poor star for the first time. It is worth mentioning that the star has a metallicity of -1.74, a [Cu/Fe] of -0.74, a [Zn/Fe] of 0.04, and a [Mg/C] of 0.69. The results suggest that it may be a second-generation star formed in a multi-enriched environment, rather than being a descendant of very massive first-generation stars. A last point worth mentioning is the possibility that HD~1936 may host a sub-stellar component with a mass of 18.35$M_{\rm J}$. Although our study does not confirm or deny this, we briefly discuss the possibility of the star hosting a planet.
Probing Entanglement and Non-locality of Electrons in a Double-Dot via Transport and Noise
Creators: name: Loss, Daniel
name: Sukhorukov, Eugene V.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Addressing the feasibilty of quantum communication with electrons we consider entangled spin states of electrons in a double-dot which is weakly coupled to in--and outgoing leads. We show that the entanglement of two electrons in the double-dot can be detected in mesoscopic transport and noise measurements. In the Coulomb blockade and cotunneling regime the singlet and triplet states lead to phase-coherent current and noise contributions of opposite signs and to Aharonov-Bohm and Berry phase oscillations in response to magnetic fields. These oscillations are a genuine two-particle effect and provide a direct measure of non-locality in entangled states. We show that the ratio of zero-frequency noise to current (Fano factor) is universal and equal to the electron charge.
description: 4 double-column pages, REVTeX, 1 eps figure embedded with epsf, equations added
title: Dilla Journal of Education, Vol. 2 No. 1 (2023): Teacher’s Performance Appraisal Practice and Challenges in Government Primary Schools of Dilla City Administration
title: Teacher’s Performance Appraisal Practice and Challenges in Government Primary Schools of Dilla City Administration
titleType: AlternativeTitle
Creators: name: Dilla Journal Of Education
Publisher: name: Dilla Journal of Education
Year: 2024

description: Abstract


The main purpose of this study was to assess the current practice and challenges of teachers’ performance appraisal practices in government primary schools under the Dilla City administration. The research utilized a mixed-method concurrent triangulation design approach. There were four complete primary schools in the city, and two of them were included in the study. From these schools, 62 teachers, two principals, one school supervisor, two department heads, two PTAs, and two students were selected as a sample. Concerning the sample, teachers were selected using proportional and systematic sampling techniques. Contrary to this, the purposive sampling technique was used to select principals, department heads, and student council; PTAs and one supervisor were also selected by the available sampling method. Findings from both instruments were presented in an integrative way. The findings of the study revealed that teacher performance appraisal has been a common practice, often conducted twice a year, but with the principal as the dominant appraiser. Concerning purpose, the current system of teachers’ performance appraisal has not mainly served the developmental drives of PA. The criteria used to appraise teachers were viewed by teachers as fine, but the participation level in the formulation process was forced by the South American Nationalities Education Bureau. Concerning common challenges in the TPA: poor feedback system, low teacher participation, postappraisal discussions, students’ bias, and sometimes using PA for revenge. The text advocates for teacher involvement in formulating TPA criteria, involving stakeholders, and adapting guidelines, while also recommending meticulous assessment of teacher performance using interpersonal communication.
Arma spinosa
Creators: name: Roell, Talita
name: Lemaître, Valérie A.
name: Webb, Michael D.
name: Campos, Luiz A.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Pentatomidae
Arma
Arma spinosa

description: spinosa (Arma) Dallas 1851: 98. [Figs 191–192]
 Original data: “ ♁”; “a. Trenton Falls. Presented by E. Doubleday, Esq.” [syntype (s)]
SYNTYPE ♁: blue-margined syntype disc; “ E. Doubleday. Trenton Falls, New York.”; “41. 5. 17. 86.”; “4. ARMA SPINOSA,”; “NHMUK 010592454”. Left hemelytron, third to fifth right antennomeres, second to fifth left antennomeres, and right posterior leg missing (Fig. 191).
NON-TYPE [formerly considered as type] ♀: red-margined type disc; “N. America 63-90-”; “ maculiventris Say N. America.”; “NHMUK 010938717”. Left hemelytron, right antenna, and left fourth and fifth antennomeres missing. Head disjointed from pronotum (Fig. 192).
 Current status: Podisus maculiventris (Say, 1831) (synonymised by Uhler in Scudder 1899: 307; see Van Duzee 1904: 71; Schouteden 1907: 72).
 Notes: From Dallas’s original description, we do not know whether Dallas had one or more specimens, only the sex: male. Walker (1867a: 134) listed only one specimen with the right data. We have found it. As we cannot be sure that it was the only one Dallas had when he described the species (although it is likely as Dallas stated only one measurement and noted: “Antennae with the two basal joints dusky ferrugineous, the rest wanting ” [emphasis ours]), we consider it a syntype. This, especially as Thomas (1992: 92) did not mention having examined any type for this species, although he thoroughly detailed those he did examine for other species. According to Burks (1975: 139), the specimens Doubleday collected at St John’s Bluff may be variously labelled: “St John’s Bluff”, “ East Florida, Doubleday” and “North America, Doubleday”. The species Arma spinosa is reported by Walker (1985: 11) as having been sent to Museum Victoria by Francis Walker. Therefore, the specimen (number 52829) of this species from N. America listed by Public Library, Museums and National Gallery (Vic.), et al. (1890: 52) may be from the type series. This needs to be further investigated.
description: Published as part of Roell, Talita, Lemaître, Valérie A., Webb, Michael D. & Campos, Luiz A., 2023, An annotated and illustrated Type Catalogue of the predacious Shieldbugs (Hemiptera: Heteroptera: Pentatomidae: Asopinae) in the Collection of the Natural History Museum, London, pp. 1-105 in Zootaxa 5232 (1) on page 79, DOI: 10.11646/zootaxa.5232.1.1, http://zenodo.org/record/7609794
title: Dilla Journal of Education, Vol. 2 No. 1 (2023): Influence of social media utilization and parent adolescent communication on academic- achievement of secondary school students in south Ethiopia
title: Influence of social media utilization and parent adolescent communication on academic- achievement of secondary school students in south Ethiopia
titleType: AlternativeTitle
Creators: name: Dilla Journal Of Education
Publisher: name: Dilla Journal of Education
Year: 2024

description: Abstract


This study aimed to assess the influence of social media utilization and parentadolescent communication on academic achievement at Hodo Public Secondary School. The basic research questions formulated for the study were: 1. Is the intensity of social media utilization and parent-adolescent communication predicting academic achievement among study participants? 2. What is the extent of social media utilization and parent-adolescent communication among the study participants?; and 3. Is there a gender difference in terms of social media utilization? The cross-sectional design was applied to achieve its objectives. Both stratified random sampling and simple random sampling techniques were used. 253 participants were selected, including ten percent contingency, from a total of 487 students. Nine teachers were randomly selected for interviews; both the primary and secondary data were collected. The quantitative data was analyzed by descriptive (mean, standard deviation, percentage) and inferential statistics (linear regression, sample, and independent t-test) using Statistical Package for Social Sciences (SPSS) Version 20.0. Also, the process of analyzing qualitative data began with coding, classifying, and categorizing the obtained text data from interviewees through note-taking and tape recording into concepts or codes. The findings of this study revealed that the intensity of social media utilization and parent-adolescent communication have a statistically significant influence on academic achievement (=.001, F (2,216) =.101, p =.034). The extent of social media utilization and parent-adolescent communication was 95%CI: social media utilization (M = 1.90, SD = 2.63), t (219) =1.498, p =.046, and parent-adolescent communication (M = 2.57, SD = 3.50), t (219) =1.736, p =.012, which implied that there is a statistically significant difference in the extent of social media utilization and parent-adolescent communication among study participants, and there was no statistically significant difference between the mean score of social media utilization among male (M = 65.97, SD = 3.950, n = 152) and female (M = 65.97, SD = 3.950, t(67) = 1.576, p =.049) at the.05 significant level. This implies that the finding shows that there is a significant influence of social media utilization and parent-adolescent communication on the academic achievement of secondary school students. This indicates that parents or guardians, teachers, counselors, or concerned school personnel and the government should take part in designing an awareness-creation program to utilize social media and boost academic achievements.
On the dust temperatures of high redshift galaxies
Creators: name: Liang, Lichen
name: Feldmann, Robert
name: Kereš, Dušan
name: Scoville, Nick Z.
name: Hayward, Christopher C.
name: Faucher-Giguère, Claude-André
name: Schreiber, Corentin
name: Ma, Xiangcheng
name: Hopkins, Philip F.
name: Quataert, Eliot
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Dust temperature is an important property of the interstellar medium (ISM) of galaxies. It is required when converting (sub)millimeter broadband flux to total infrared luminosity (L_IR), and hence star formation rate, in high-z galaxies. However, different definitions of dust temperatures have been used in the literature, leading to different physical interpretations of how ISM conditions change with, e.g., redshift and star formation rate. In this paper, we analyse the dust temperatures of massive (M* > 10^10 Msun) z=2-6 galaxies with the help of high-resolution cosmological simulations from the Feedback in Realistic Environments (FIRE) project. At z~2, our simulations successfully predict dust temperatures in good agreement with observations. We find that dust temperatures based on the peak emission wavelength increase with redshift, in line with the higher star formation activity at higher redshift, and are strongly correlated with the specific star formation rate. In contrast, the mass-weighted dust temperature does not strongly evolve with redshift over z=2-6 at fixed IR luminosity but is tightly correlated with L_IR at fixed z. The mass-weighted temperature is important for accurately estimating the total dust mass. We also analyse an 'equivalent' dust temperature for converting (sub)millimeter flux density to total IR luminosity, and provide a fitting formula as a function of redshift and dust-to-metal ratio. We find that galaxies of higher equivalent (or higher peak) dust temperature ('warmer dust') do not necessarily have higher mass-weighted temperatures. A 'two-phase' picture for interstellar dust can explain the different scaling relations of the various dust temperatures.
description: 26 pages, 15 figures, accepted for publication in MNRAS
Triplet Higgs Bosons Production in e^-e^- -Collisions
Creators: name: Alanakyan, R. A.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the framework of models with Higgs triplets, doubly and singly charged triplet Higgs boson production in the processes $e^-e^-\toδ^{--}_{L,R}Z^0$ and $e^-e^-\toδ^{-}_{L}W^-_L$ are considered.
description: pages,LaTeX file,using eps.sty,3 ps figures included
Additional file 1: of Do social factors and country of origin contribute towards explaining a “Latina paradox” among immigrant women giving birth in Germany?
Creators: name: Zolitschka, Kim
name: Miani, Céline
name: Breckenkamp, Jürgen
name: Brenne, Silke
name: Borde, Theda
name: David, Matthias
name: Razum, Oliver
Publisher: name: figshare
Year: 2019
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Computational Biology

description: Distribution of socio-demographic characteristics and obstetric indicators among 1st generation immigrant women, Berlin, Germany, 2011/12. Additional information about 1st immigration women. (DOCX 20 kb)
title: Dilla Journal of Education, Vol. 2 No. 1 (2023): Predictors of Risky Sexual Behavior among Trainee Teachers in the Case of Dilla, Arbaminch, and Hosanna College of Teacher Education; SNNPRS, Ethiopia
title: Predictors of Risky Sexual Behavior among Trainee Teachers in the Case of Dilla, Arbaminch, and Hosanna College of Teacher Education; SNNPRS, Ethiopia
titleType: AlternativeTitle
Creators: name: Dilla Journal Of Education
Publisher: name: Dilla Journal of Education
Year: 2024

description: Abstract


This study aimed to examine predictors of risky sexual behavior among trainee teachers in the case of Dilla, Arbaminch, and Hosanna College of Teacher Education, SNNPRS, Ethiopia. In doing so, a descriptive cross-sectional research design was employed. Data were produced from 353 participants (i.e., 191 males and 162 females) and 15 key informants with unique job positions and responsibilities. A sample was selected through a multi-stage sampling technique. Both developed as well as adapted questionnaires and key informant interview protocols were utilized as data-gathering tools. Data analysis was carried out through a nonparametric binomial test, multiple linear regression, and thematic content analysis. The results demonstrated that various triggering conditions are followed by a tendency for the majority of trainee instructors to engage in risky sexual activity. Among predictive variables, social norms and permissive attitudes were solidified as the major predictive factors that trigger trainee teachers towards risky sexual behavior. Trainee teachers who are more prone to the influence of peer pressure and a permissive attitude toward risky sexual behavior are more likely to engage in risky sexual behavior. Thus, it is more advisable for governmental as well as non-governmental organizations to maintain and facilitate long-lasting psychosocial support for college trainee teachers about risky sexual behaviors.
Melting of a two-dimensional monodisperse cluster crystal to a cluster liquid
Creators: name: Wang, Wenlong
name: Díaz-Méndez, Rogelio
name: Wallin, Mats
name: Lidmar, Jack
name: Babaev, Egor
Publisher: name: arXiv
Year: 2018
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Monodisperse ensembles of particles that have cluster crystalline phases at low temperatures can model a number of physical systems, such as vortices in type-1.5 superconductors, colloidal suspensions and cold atoms. In this work we study a two-dimensional cluster-forming particle system interacting via an ultrasoft potential. We present a simple mean-field characterization of the cluster-crystal ground state, corroborating with Monte Carlo simulations for a wide range of densities. The efficiency of several Monte Carlo algorithms are compared and the challenges of thermal equilibrium sampling are identified. We demonstrate that the liquid to cluster-crystal phase transition is of first order and occurs in a single step, and the liquid phase is a cluster liquid.
description: 11 pages and 10 figures;
title: Radiation-flux-conservative beam shapes for laser-fluid coupled problems in finite volumes
Creators: name: Kiesenhofer, Julian
Publisher: name: TU Wien
Year: 2020
Subjects: subject: multi physics simulation
subject: laser material processing

description: A finite volume code, written in C++, is capable of computing the laser materialprocessing physical phenomena. To explain the whole structure of the light-matterinteraction as a transient process, a detailed numerical solution for the propagation of beams must be provided in the first place.Since we are interested in the molten material’s fluid dynamics, which are modeled on a multiphase volume-of-fluid approach, and the laser physics, paraxiallaser beam models, are coupled with the fluid problem, it is also advantageous to describe the beam propagation using finite volume methods.Due to the fact, that there is a large discrepancy between the necessary grid size for the fluid problem and laser physics, some problems concerning energy conservation can arise. The radiation flux-conservation can affect the numerical stability ofthe absorption model of the laser-fluid coupled field. The theoretical background of this problem is introduced, the models are derived, argued mathematically and the results of these models are presented in this work.Different models that describe the radiation flux through a finite volume grid are presented and discussed. The models have been implemented in OpenFoam® and the results were visualized in Paraview.The source code of the multi-physical laser material processing simulation software was developed by IFT Vienna University of Technology and is their intellectual property.
Volterra chain and Catalan numbers
Creators: name: Adler, V. E.
name: Shabat, A. B.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Combinatorics (math.CO)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 37K40, 05A15

description: We consider the Cauchy problem for the Volterra chain with an initial condition equal to 0 in one node and 1 in the others. It is shown that this problem admits an exact solution in terms of the Bessel functions. The Taylor series arising here are related to the exponential generating function for Catalan numbers.
description: 4 pages, 2 figures
Tynacantha splendens Distant 1889
Creators: name: Roell, Talita
name: Lemaître, Valérie A.
name: Webb, Michael D.
name: Campos, Luiz A.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Pentatomidae
Tynacantha
Tynacantha splendens

description: splendens (Tynacantha) Distant 1889: 321. [Fig. 193]
 Original data: “ Hab. PANAMA, Bugaba (Champion).” [syntype (s)]
LECTOTYPE ♁ (designated by Thomas 1992: 123): purple-margined lectotype disc; red-margined type disc; “Bugaba, 800-1500ft. Champion. ”; “B.C.A., Hem. I. Tynacantha splendens Dist. ”; “NHMUK 010592342”. Right middle leg, and left posterior leg missing (Fig. 193).
 Current status: Tynacantha splendens Distant, 1889.
 Note: Thomas (1992: 123) explained: “I examined the type of Tynacantha splendens, a male, located in the British Museum (Natural History). It is labeled: (a) “Type,” (b) “B.C.A. Hem. I. Tynacantha splendens Dist.,” (c) “Bugaba, 800-1500 ft. Champion.”” From Distant’s original description, we do not know whether Distant had one or more specimens, nor the sex. We have found only one specimen in the collection but cannot be sure it was the only one Distant had. By giving its labels data and calling the specimen “the type”, Thomas designated it as the lectotype by inference of “the type” (ICZN 1999: Art. 74.6).
description: Published as part of Roell, Talita, Lemaître, Valérie A., Webb, Michael D. & Campos, Luiz A., 2023, An annotated and illustrated Type Catalogue of the predacious Shieldbugs (Hemiptera: Heteroptera: Pentatomidae: Asopinae) in the Collection of the Natural History Museum, London, pp. 1-105 in Zootaxa 5232 (1) on page 79, DOI: 10.11646/zootaxa.5232.1.1, http://zenodo.org/record/7609794
Exploring the magnetic field of Helmholtz and Maxwell coils: a computer-based approach exploiting the superposition principle
Creators: name: García-Farieta, Jorge Enrique
name: Hurtado, Alejandro
Publisher: name: arXiv
Year: 2024
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: Teaching magnetism is one of the most challenging topics at undergraduate level in programmes with scientific background. A basic course includes the description of the magnetic interaction along with empirical results such as the Biot-Savart law's. However, evaluating the magnetic field due to certain current carrying system at any point in space is not an easy task, especially for points in space where symmetry arguments cannot be applied. In this paper we study the magnetic field produced by both Helmholtz and Maxwell coils at all points in space by using a hybrid methodology that combines the superposition principle and an analytical result. We implement a computational approach, that is based on iterating $n$ times the magnetic field produced by a finite current-carrying wire, to evaluate the magnetic field at any point in space for coils arrangements without using advanced calculus. This methodology helps teachers and students to explore the field due to systems with different levels of complexity, combining analytical and computational skills to visualize and analyse the magnetic field. After our analysis, we show that this is an useful approach to emphasize fundamental concepts and mitigate some of the issues that arise when evaluating the magnetic field for systems proposed in introductory physics textbooks.
description: Matches the version published in Revista Brasileira de Ensino de F\'isica