cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Structure and relevant dimension of the Heisenberg model and applications to spin rings
Creators: name: Baerwinkel, K.
name: Schmidt, H. -J.
name: Schnack, J.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: For the diagonalization of the Hamilton matrix in the Heisenberg model relevant dimensions are determined depending on the applicable symmetries. Results are presented, both, by general formulae in closed form and by the respective numbers for a variety of special systems. In the case of cyclic symmetry, diagonalizations for Heisenberg spin rings are performed with the use of so-called magnon states. Analytically solvable cases of small spin rings are singled out and evaluated.
description: 18 pages, 5 figures, uses epsfig.sty, submitted to Journal of Magnetism and Magnetic Materials. More information at http://www.physik.uni-osnabrueck.de/makrosysteme/
Degeeriella epustulata
Creators: name: Gonza ́ Lez-Acun, Daniel A.
name: Palma, Ricardo L.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Degeeriella
Degeeriella epustulata

description: Degeeriella epustulata (Carriker, 1903)
 Nirmus fuscus epustulatus Carriker, 1903: 133.
 Degeeriella epustulata Carriker, 1903 [sic]; Harrison 1916: 112.
 Degeeriella nisus epustulata (Carriker, 1903); Clay 1958a: 161, fig. 124.
 Degeeriella epustulata (Carriker, 1903); Price et al. 2003: 173.
 Degeeriella epustulata (Carriker, 1903); González-Acuña et al. 2008a: 283.
 Degeeriella epustulata (Carriker, 1903); Moreno & González-Acuña 2015: 95.
 Degeeriella epustulata (Carriker, 1903); González-Acuña & Moreno 2018: 262.
Holotype ♀ in USNM (see Emerson 1967: 105).
 Type host: Accipiter bicolor Vieillot, 1817.
 Chilean host: Accipiter chilensis Philippi & Landbeck, 1864.
Other hosts: None.
Chilean locality: Punta Arenas: Region XII.
Geographic distribution: Central and South America.
 Chilean references: González-Acuña et al. (2008a); Moreno & González-Acuña (2015); González-Acuña & Moreno (2018).
 Other significant references: Clay (1958a); Price et al. (2003).
 Remarks: The host species of Degeeriella epustulata in Chile is Accipiter chilensis, not Accipiter bicolor as stated in all the Chilean references listed above (see Martínez-Piña & González-Cifuentes 2004: 89).
description: Published as part of Gonza ́ Lez-Acun, Daniel A. & Palma, Ricardo L., 2021, An annotated catalogue of bird lice (Insecta: Phthiraptera) from Chile, pp. 1-151 in Zootaxa 5077 (1) on pages 63-64, DOI: 10.11646/zootaxa.5077.1.1, http://zenodo.org/record/5766642
Is ram pressure enhanced by cluster mergers?
Creators: name: Costa Lourenco, Ana Carolina
Publisher: name: Zenodo
Year: 2021
Subjects: Galaxy evolution
Galaxy cluster
Intracluster medium

description: In a hierarchical Universe, galaxy clusters continue to grow with cosmic time, and thus a large number of them are disturbed by the accretion of groups or major collisions. Hydrodynamical simulations show that ram pressure stripping can be enhanced during cluster interactions providing an alternative way of forming jellyfish galaxies. In this work, we use X-ray, optical, and radio data to robustly investigate this hypothesis, supplying a statistical analysis of the incidence of the jellyfish galaxies from the WINGS, OmegaWINGS, and GASP surveys with respect to the dynamical state of their host clusters. We found that disturbed clusters tend to be more massive and host less ram pressure stripping candidates than the relaxed clusters. Our conclusions hold even when the counting is done in different fractions of R200 and correcting by the infalling population. These results are twice counter-intuitive since in massive clusters the higher gas density leads to stronger ram-pressure and that in messy environments the higher relative velocity between the gas and the galaxies should also provide a ram-pressure enhancement.
Search for the decay K_L-> pi^0 nu nubar
Creators: name: Adams, J.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report on a search for the rare decay K_L -> pi^0 nu nubar in the KTeV experiment at Fermilab. We searched for two-photon events whose kinematics were consistent with an isolated pi^0 coming from the decay K_L -> pi^0 nu nubar. One candidate event was observed, which was consistent with the expected level of background. An upper limit on the branching ratio was determined to be B(K_L -> pi^0 nu nubar) < 1.6E-6 at the 90% confidence level.
description: Documentstyle aps,psfig,prl, 5 pages, 3 figures
Proper Generalized Decomposition of Parameterized Electrothermal Problems Discretized by the Finite Integration Technique
Creators: name: Krimm, Alexander
name: Casper, Thorben
name: Schöps, Sebastian
name: De Gersem, Herbert
name: Chamoin, Ludovic
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: The proper generalized decomposition is applied to a static electrothermal model subject to uncertainties. A reduced model that circumvents the curse of dimensionality is obtained. The quadratic electrothermal coupling term is non-standard and requires the introduction of a trilinear form. An existing finite integration technique based solver is used to demonstrate the opportunities and difficulties in integrating the proper generalized decomposition in existing codes.
description: submitted to IEEE Transactions on Magnetics - Conferences, to appear
Coulomb interaction and ferroelectric instability of BaTiO3
Creators: name: Ghosez, Ph.
name: Gonze, X.
name: Michenaud, J. -P.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Using first-principles calculations, the phonon frequencies at the $Γ$ point and the dielectric tensor are determined and analysed for the cubic and rhombohedral phases of BaTiO$_{3}$. The dipole-dipole interaction is then separated à la Cochran from the remaining short-range forces, in order to investigate their respective influence on lattice dynamics. This analysis highlights the delicate balance of forces leading to an unstable phonon in the cubic phase and demonstrates the extreme sensitivity of this close compensation to minute effective charge changes. Within our decomposition, the stabilization of the unstable mode in the rhombohedral phase or under isotropic pressure has a different origin.
description: 9 pages, 4 tables, 1 figure
Degeeriella elani Tendeiro 1955
Creators: name: Gonza ́ Lez-Acun, Daniel A.
name: Palma, Ricardo L.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Degeeriella
Degeeriella elani

description: Degeeriella elani Tendeiro, 1955
 Degeeriella elani Tendeiro, 1955: 598, figs 36–37.
 Degeeriella elani Tendeiro, 1955; Clay 1958a: 174, figs 4, 36, 54, 91; pl. 6: fig. 1.
 Degeeriella elani Tendeiro, 1955; Price et al. 2003: 173.
 Degeeriella elani Tendeiro, 1955; González-Acuña et al. 2008a: 283.
 Degeeriella elani Tendeiro, 1955; Moreno & González-Acuña 2015: 95.
 Degeeriella elani Tendeiro, 1955; González-Acuña & Moreno 2018: 262.
Holotype ♂ in CZLP.
 Type host: Elanus caeruleus (Desfontaines, 1789).
 Chilean host: Elanus leucurus (Vieillot, 1818).
 Other hosts: Elanus caeruleus vociferus (Latham, 1790); Elanus axillaris (Latham, 1801).
Chilean localities: Maitencillo: Region IV; Malleco: Region IX; Bulnes: Region XVI.
Geographic distribution: All continents, except Antarctica.
 Chilean references: González-Acuña et al. (2008a); Moreno & González-Acuña (2015); González-Acuña & Moreno (2018).
 Other significant references: Clay (1958a); Palma (1996: 172); Price et al. (2003).
 Remarks: Clay (1958a: 176) and Price et al. (2003: 173) listed “ Elanus notatus Gould ” as a host of Degeeriella elani, but this host name is regarded as a junior synonym of Elanus axillaris (Latham, 1801) (Schodde & Mason 1980: 12).
description: Published as part of Gonza ́ Lez-Acun, Daniel A. & Palma, Ricardo L., 2021, An annotated catalogue of bird lice (Insecta: Phthiraptera) from Chile, pp. 1-151 in Zootaxa 5077 (1) on page 64, DOI: 10.11646/zootaxa.5077.1.1, http://zenodo.org/record/5766642
Universal saturation of electron dephasing in three-dimensional disordered metals
Creators: name: Lin, J. J.
name: Kao, L. Y.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have systematically investigated the low-temperature electron dephasing times $τ_ϕ$ in more than 40 three-dimensional polycrystalline impure metals with distinct material characteristics. In all cases, a saturation of the dephasing time is observed below about a (few) degree(s) Kelvin, depending on samples. The value of the saturated dephasing time $τ_0$ [$\equiv τ_ϕ(T \to 0 {\rm K})$] falls basically in the range 0.005 to 0.5 ns for all samples. Particularly, we find that $τ_0$ scales with the electron diffusion constant $D$ as $τ_0 \sim D^{- α}$, with $α$ close to or slightly larger than 1, for over two decades of $D$ from about 0.1 to 10 cm$^2$/s. Our observation suggests that the saturation behavior of $τ_ϕ$ is universal and intrinsic in three-dimensional polycrystalline impure metals. A complete theoretical explanation is not yet available.
description: 4 pages, 3 eps figures
Hukum Tata Negara - Ombudsman RI
Creators: name: Aprilia Dela Nurul Azizah
Publisher: name: Zenodo
Year: 2021
Subjects: Ombudsman RI

description: Universitas 17 Agustus 1945 Surabaya Fakultas Hukum 2021 Tugas Kelompok Hukum Tata Negara Kelas : C Ombudsman merupakan sebuah lembaga negara yang memiliki kewenangan dalam mengawasi penyelenggaraan pelayanan publik.
On the spectrum and string tension of U(1) lattice gauge theory in 2+1 dimensions
Creators: name: Athenodorou, Andreas
name: Teper, Michael
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We calculate the low-lying spectra of glueballs and confining flux tubes in the U(1) lattice gauge theory in 2+1 dimensions. We see that up to modest lattice spacing corrections, the glueball states are consistent with being multiparticle states composed of non-interacting massive JPC=0-- particles. We observe that the ag^2 -> 0 limit is, as expected, unconventional, and follows the well-known saddle-point analysis of Polyakov to a good approximation. The spectrum of closed (winding) flux tubes exhibits the presence of a massive world-sheet excitation whose mass is consistent with that of the bulk screening mass. These U(1) calculations are intended to complement existing lattice calculations of the properties of SU(N) and SO(N) gauge theories in D=2+1.
description: 39 pages; 15 figures. Extra discussion, calculation, figures and references
title: Ethiopian Journals of Environment and Development, Vol. 2 No. 1 (2019): Effects of scattered Faidherbia albida (Del. A. Chev) tree on yield and yield components of three Cereal crops in Central Ethiopia
title: Effects of scattered Faidherbia albida (Del. A. Chev) tree on yield and yield components of three Cereal crops in Central Ethiopia
titleType: AlternativeTitle
Creators: name: Ethiopian Journals Of Environment And Development
Publisher: name: Ethiopian Journals of Environment and Development
Year: 2021

description: Abstract
Understanding tree-crop interaction is a key aspect in determining approprate tree-crop combination
and managements. However, little is known about the influence of tree crop interaction and tree management on crop productivity. The study was conducted with the aim of investigating the
effects of Faidherbia albida on yield and yield components of three cereal crops: wheat (Triticum
aestivum L.), maize (Zea mays L.) and teff (Eragrostis tef (Zucc.) Trotter) in Central Ethiopian
farmers field at Silti District.Three independent experiments were conducted using randomized
complete block design with five replications for each experiment.
Bridging Research Tools and Commons: The MaLDReTH and GORC Connection
Creators: name: Macneil, Rory
name: Woodford, CJ
Publisher: name: Zenodo
Year: 2025

description: The Research Data Alliance (RDA) Mapping the Landscape of Digital Research Tools Harmonized (MaLDReTH) map and Global Open Research Commons International Model (GORC IM) are complementary outputs relevant to the research data community. By working together through a liaison task force (TF), we aim to provide maximum benefit to research infrastructures and commons. This proposal outlines our aims for the TF.
Anharmonic Effects in the Low-Frequency Vibrational Modes of Aspirin and Paracetamol Crystals
Creators: name: Raimbault, Nathaniel
name: Athavale, Vishikh
name: Rossi, Mariana
Publisher: name: arXiv
Year: 2019
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The low-frequency range of vibrational spectra is sensitive to collective vibrations of the lattice. In molecular crystals, it can be decisive to identify the structure of different polymorphs, and in addition, it plays an important role on the magnitude of the temperature-dependent component of vibrational free energy differences between these crystals. In this work we study the vibrational Raman spectra and vibrational density of states of different polymorphs of the flexible Aspirin and Paracetamol crystals based on dispersion-corrected density-functional theory, density-functional perturbation theory, and $ab\,initio$ molecular dynamics. We examine the effect of quasi-harmonic lattice expansion and compare the results of harmonic theory and the time correlation formalism for vibrational spectra. Lattice expansion strongly affects the collective vibrations below 300 cm$^{-1}$, but it is significantly less important at higher frequencies, while thermal nuclear motion can be important in the full vibrational range. We also observe that the inclusion or neglect of many-body van der Waals dispersion interactions do not cause large differences in the low-frequency range of Raman spectra or vibrational density of states, provided the lattice constants are fixed. We obtain quantitative agreement with experimental room-temperature Raman spectra below 300 cm$^{-1}$ for all polymorphs studied. Examining the two-dimensional correlations between different vibrations, we find which modes show a larger degree of anharmonic coupling to others, providing a possible route to assess the accuracy of harmonic free energy evaluations in different cases.
People's Mood and SARS-Cov-2 Mortality
Creators: name: Besharati, Mohammad Reza
name: Izadi, Mohammad
name: Alireza Talebpour
Publisher: name: Zenodo
Year: 2021
Subjects: Sars-Cov-2, Mood, People, COVID-19, Mortality, Mortality Rate, Mortality Percent, Calm People, Energetic People

description: Calm People Sample Size (with apparent COVID-19 Infection): 562, # of SARS-COV-2 Deaths: 33, Restless, active, energetic People Sample Size (with apparent COVID-19 Infection): 462, # of SARS-COV-2 Deaths: 16, Statistical Significance: YES
Development of a Molecular Point-Of-Care Test for Hepatitis B Virus (HBV) Infection
Creators: name: QASIM, RAYID
Publisher: name: Monash University
Year: 2024
Subjects: classificationCode: 320799
subject: Medical microbiology not elsewhere classified
classificationCode: 320705
subject: Medical virology

description: Hepatitis B virus (HBV) is a blood-borne pathogen that infects the liver. One of the molecular diagnostic tools to detect HBV DNA is Loop-mediated isothermal amplification (LAMP), a novel technique for amplifying target nucleic acid. It relies on four to six specifically designed primers and a DNA polymerase enzyme with high strand displacement activity; the reaction occurs at a constant temperature of around 65°C. It is simple, rapid, and cost-effective. This research project developed LAMP assay that enabled the direct detection of HBV nucleic acid in human blood using point-of-care testing platform that can be deployed in resource-constrained areas.
The role of PSL(2,7) in M-theory: M2-branes, Englert equation and the septuples
Creators: name: Cerchiai, Bianca Letizia
name: Fré, Pietro
name: Trigiante, Mario
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Reconsidering the M2-brane solutions of d=11 supergravity with a transverse Englert flux introduced by one of us in 2016, we present a new purely group theoretical algorithm to solve Englert equation based on a specific embedding of the PSL(2,7) group into $\mathrm{Weyl[\mathfrak{e}_7]}$. The aforementioned embedding is singled out by the identification of $\mathrm{PSL(2,7)}$ with the automorphism group of the Fano plane. Relying on the revealed intrinsic PSL(2,7) symmetry of Englert equation and on the new algorithm we present an exhaustive classification of Englert fluxes. The residual supersymmetries of the corresponding M2-brane solutions associated with the first of the 8 classes into which we have partitioned Englert fluxes are exhaustively analyzed and we show that all residual d=3 supersymmetries with $\mathcal{N} \in \left\{1,2,3,4,5,6\right\}$ are available. Our constructions correspond to a particular case in the category of M2-brane solutions with transverse self-dual fluxes.
description: 58 pages, typos corrected and comments added. arXiv admin note: text overlap with arXiv:1601.02253
The retrograde orbit of the globular cluster FSR1758 revealed with Gaia DR2
Creators: name: Simpson, Jeffrey D.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the first radial velocity measurements of the recently identified globular cluster FSR1758. From the two member stars with radial velocities from the Gaia Radial Velocity Spectrograph reported in Gaia DR2, we find FSR1758 has a radial velocity of $227\pm1$ km/s. We also find potential extra-tidal star lost from the cluster in the surrounding 1~deg. Combined with Gaia proper motions and photometric distance estimates, this shows that FSR1758 is on a very retrograde, radial orbit with an pericentre of $3.8_{-0.9}^{+0.9}$ kpc, an apocentre of $16_{-5}^{+8}$ kpc, and eccentricity of $0.62_{-0.04}^{+0.05}$. Although it is currently at a Galactocentric distance of $3.8_{-0.9}^{+0.9}$ kpc --- at the edge of the bulge --- it is an intruder from the halo. We investigate whether a reported `halo' of stars around FSR1758 is related to the cluster, and find that most of these stars are likely foreground dwarf stars. We conclude that FSR1758 is not a dwarf galaxy, but rather a globular cluster.
description: 6 pages, 4 figures, 1 table. Accepted for publication in MNRAS. Refereed version has one fewer member stars that submitted version. Data and code for producing figures is available from https://doi.org/10.5281/zenodo.2550945
Critical Exponents of the 3-D Ising Model
Creators: name: Gupta, Rajan
name: Tamayo, Pablo
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We present a status report on the ongoing analysis of the 3D Ising model with nearest-neighbor interactions using the Monte Carlo Renormalization Group (MCRG) and finite size scaling (FSS) methods on $64^3$, $128^3$, and $256^3$ simple cubic lattices. Our MCRG estimates are $K_{nn}^c=0.221655(1)(1)$ and $ν=0.625(1)$. The FSS results for $K^c$ are consistent with those from MCRG but the value of $ν$ is not. Our best estimate $η= 0.025(6)$ covers the spread in the MCRG and FSS values. A surprise of our calculation is the estimate $ω\approx 0.7$ for the correction-to-scaling exponent. We also present results for the renormalized coupling $g_R$ along the MCRG flow and argue that the data support the validity of hyperscaling for the 3D Ising model.
description: 11 pages. Package submitted in uufiles format: unpack and tex paper.tex. Source files for figures in modified "axis" format also included. Needs macro packages lanlmac and epsf
Degeeriella emersoni Clay 1958
Creators: name: Gonza ́ Lez-Acun, Daniel A.
name: Palma, Ricardo L.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Degeeriella
Degeeriella emersoni

description: Degeeriella emersoni Clay, 1958
 Degeeriella emersoni Clay, 1958a: 154, figs 28, 45, 78, 87.
 Degeeriella emersoni Clay, 1958; Price et al. 2003: 173.
 Degeeriella emersoni Clay, 1958; González-Acuña et al. 2008a: 283.
 Degeeriella emersoni Clay, 1958; Moreno & González-Acuña 2015: 95.
 Degeeriella emersoni Clay, 1958; González-Acuña & Moreno 2018: 262.
Holotype ♂ in USNM.
 Type host: Buteogallus gundlachii (Cabanis, 1855).
 Chilean host: Parabuteo unicinctus (Temminck, 1824).
 Other host: Buteogallus aequinoctialis (Gmelin, 1788).
Chilean localities: Quillota: Region V; Cerro San Cristóbal & Cerro Manquehue: Region RM.
Geographic distribution: Central and South America.
 Chilean references: González-Acuña et al. (2008a); Moreno & González-Acuña (2015); González-Acuña & Moreno (2018).
 Other significant reference: Price et al. (2003).
 Remarks: Because of their poor condition, Clay (1958a: 155) wrote that seven lice from Parabuteo unicinctus she had examined “seem to belong to this species”. The records from Chile listed above confirm Parabuteo unicinctus as a natural, regular host of Degeeriella emersoni.
description: Published as part of Gonza ́ Lez-Acun, Daniel A. & Palma, Ricardo L., 2021, An annotated catalogue of bird lice (Insecta: Phthiraptera) from Chile, pp. 1-151 in Zootaxa 5077 (1) on page 64, DOI: 10.11646/zootaxa.5077.1.1, http://zenodo.org/record/5766642
title: Optimal guidance for Toss Back concepts of Reusable Launch Vehicles
Creators: name: BRENDEL, Elliot
name: HERISSE, Bruno
name: BOURGEOIS, Eric
Publisher: name: Proceedings of the 8th European Conference for Aeronautics and Space Sciences. Madrid, Spain, 1-4 july 2019
Year: 2019
Subjects: GNC
CONTROL
ATMOSPHERIC REENTRY
AEROSPACE SYSTEMS

description: In the context of the development of future launchers, Toss Back concepts are being studied by CNES together with ONERA. Focusing on the recovery phase between end of ascent and start of the landing boost, a guidance algorithm using an indirect method of optimal control based on Pontryagin\'s Maximum Principle is presented. First, a reference trajectory is computed offline, then this trajectory is used to initialize the guidance algorithm which consists in recomputing the optimal control online. Promising results have shown their benefits. In particular, solutions are provided quickly, at a frequency that is compatible with embedded guidance components.
Asymptotically stable random walks of index $1
Creators: name: Uchiyama, Kohei
Publisher: name: arXiv
Year: 2019
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: For a random walk on the integer lattice $\mathbb{Z}$ that is attracted to a strictly stable process with index $α\in (1, 2)$ we obtain the asymptotic form of the transition probability for the walk killed when it hits a finite set. The asymptotic forms obtained are valid uniformly in a natural range of the space and time variables. The situation is relatively simple when the limit stable process has jumps in both positive and negative directions; in the other case when the jumps are one sided rather interesting matters are involved and detailed analyses are necessitated.
description: 51 pages: this is an improved version of arXiv:1808.01484, where the RW is supposed to belong to the domain of normal attraction to a stable law, while in the present version the restriction 'normal' is removed
Spin-Density-Wave Phase Transitions in Quasi-One-Dimensional Dimerized Quarter-Filled Organic Conductors
Creators: name: Kishine, Jun-ichiro
name: Yonemitsu, Kenji
Publisher: name: arXiv
Year: 1999
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have studied spin density wave (SDW) phase transitions in dimerized quarter-filled Hubbard chains weakly coupled via interchain one-particle hopping, $t_{b0}$. It is shown that there exists a critical value of $t_{b0}$, $t_{b}^\ast$, between the incoherent metal regime ($t_{b0}t_{b}^\ast$) in the metallic phase above the SDW transition temperature. By using the 2-loop perturbative renormalization-group approach together with the random-phase-approximation, we propose a SDW phase diagram covering both of the regimes. The SDW phase transition from the incoherent metal phase for $t_{b0}
description: 19 pages, 13 eps figures, uses jpsj.sty, corrected typo in the text and figures, no changes to the paper, to appear in J. Phys. Soc. Jpn. 68, No.8 (1999)
Influence of TVET Institutions in Minimizing Challenges Faced by Engineering students in their Attempt to Acquire Requisite Industry Skills in Western Kenya
Creators: name: Obinju, Anne
Publisher: name: The Eldoret National Polytechnic
Year: 2024
Subjects: Tertiary, skills, labour market, projections

description: The Government of Kenya has made tremendous efforts to help young people acquire relevant skills that would enable them fit well in the labour market. For instance, it has resolved to construct and equip new Technical and Vocational Education and Training (TVET) institutions in almost all constituencies in Kenya and provide capitation for all students in those institutions. However, most students specializing in engineering courses still don’t pass well in the national exams and when they finally do after repeating classes severally; they still don’t perform well in industries or companies that require their skills.  Tertiary education is considered one of the key pillars in our socio-economic growth projections. The areas of study were Electrical Engineering, Automotive and Mechanical Engineering, Building Construction and Civil Engineering departments. The objectives of the study were: to identify challenges facing students pursuing Engineering courses at diploma level in Western Kenya, to highlight different strategies TVET institutions can employ to minimize the challenges faced by trainees and to establish the various skills that industries and companies require for them to absorb the unemployed youths in our country. Development Participatory Theory informed the study and descriptive research design was adopted. The targeted population was 14 respondents from which 4 were sampled using Yamane formula. The main sampling technique used was purposive sampling.  An interview schedule was used to collect data which was analyzed qualitatively. This study is significant for all stakeholders in TVET institutions. The findings revealed that most students fail to acquire the necessary skills due to lack of enough time for study, lack of enough resources, delayed process of getting government capitation among others.  One of the recommendations suggested is that, practical methods of communication should be embraced and funded by the Government and the Non-Governmental Organizations.
Degeeriella fulva
Creators: name: Gonza ́ Lez-Acun, Daniel A.
name: Palma, Ricardo L.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Degeeriella
Degeeriella fulva

description: Degeeriella fulva (Giebel, 1874)
 Nirmus fulvus Giebel, 1874: 124.
 Degeeriella fulva (Giebel, 1874); Hopkins & Clay 1952: 112.
 Degeeriella fulva (Giebel, 1874); Clay 1958a: 144, figs 1, 9, 11–17, 26, 42, 70, 84, 102, 105, 109, 112–118; pl. 8: fig. 3.
 Degeeriella fulva (Giebel, 1874); Price et al. 2003: 174.
 Degeeriella fulva (Giebel, 1874); González-Acuña et al. 2008a: 283.
 Degeeriella fulva (Giebel, 1874); Moreno & González-Acuña 2015: 95, figs 5A–B.
 Degeeriella fulva (Giebel, 1874); González-Acuña & Moreno 2018: 262.
 Degeeriella fulva (Giebel, 1874); Grandón-Ojeda et al. 2019: 377, figs 1–2.
Holotype ♀, presumed lost (see Palma 2017: 28).
 Type host: Aquila chrysaetos (Linnaeus, 1758).
 Chilean hosts: Buteo polyosoma (Quoy & Gaimard, 1824); Buteo ventralis Gould, 1837; Geranoaetus melanoleucus (Vieillot, 1819).
 Other hosts: Accipiter fasciatus (Vigors & Horsfield, 1827); five species of Aquila; nine species of Buteo; six species of Hieraaetus; Ichthyophaga ichthyaetus (Horsfield, 1821); two species of Melierax; Spilornis cheela (Latham, 1790); Lophaetus occipitalis (Daudin, 1800) (see Price et al. 2003: 174).
Chilean localities: Aconcagua: Region V; Longotoma: Region V; Quinquimo: Region V; Alhu: Region RM; Colina: Region RM; Santiago: Region RM; Linares: Region VII; Nueva Aldea: Region VIII; Angol: Region IX; Punta Arenas: Region XII; Santa Clara: Region XIV.
Geographic distribution: All continents, except Antarctica.
 Chilean references: González-Acuña et al. (2008a); Moreno & González-Acuña (2015); González-Acuña & Moreno (2018); Grandón-Ojeda et al. (2019).
 Other significant references: Clay (1958a); Palma (1996: 173); Price et al. (2003).
 Remarks: Buteo ventralis and Buteo polyosoma are additional hosts to those listed by Price et al. (2003: 174) under Degeeriella fulva.
description: Published as part of Gonza ́ Lez-Acun, Daniel A. & Palma, Ricardo L., 2021, An annotated catalogue of bird lice (Insecta: Phthiraptera) from Chile, pp. 1-151 in Zootaxa 5077 (1) on page 65, DOI: 10.11646/zootaxa.5077.1.1, http://zenodo.org/record/5766642
Proximity Queries for Absolutely Continuous Parametric Curves
Creators: name: Lakshmanan, Arun
name: Patterson, Andrew
name: Cichella, Venanzio
name: Hovakimyan, Naira
Publisher: name: arXiv
Year: 2019
Subjects: subject: Robotics (cs.RO)
subject: Computational Geometry (cs.CG)
subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences

description: In motion planning problems for autonomous robots, such as self-driving cars, the robot must ensure that its planned path is not in close proximity to obstacles in the environment. However, the problem of evaluating the proximity is generally non-convex and serves as a significant computational bottleneck for motion planning algorithms. In this paper, we present methods for a general class of absolutely continuous parametric curves to compute: (i) the minimum separating distance, (ii) tolerance verification, and (iii) collision detection. Our methods efficiently compute bounds on obstacle proximity by bounding the curve in a convex region. This bound is based on an upper bound on the curve arc length that can be expressed in closed form for a useful class of parametric curves including curves with trigonometric or polynomial bases. We demonstrate the computational efficiency and accuracy of our approach through numerical simulations of several proximity problems.
description: Proceedings of Robotics: Science and Systems
Fitting tree protection to prevent deer damage - Montagem de protetores individuais nas árvores contra os danos causados por cervídeos
Creators: name: Lerberghe, Philippe Van
Publisher: name: Zenodo
Year: 2017
Subjects: mesh tree guard
hardwoods
roe deer
red deer
thin-barked species
tree guard maintenance
peeling bark
trunk calluses
protetores de árvore de rede
folhosas
veados
árvores de casca fina
manutenção de protetores de rede
descamação da casca
calos de cicatrização

description: Traduçãp de leaflet do projeto AGFORWARD - A eficácia dos protetores individuais em rede para a defesa das árvores contra a fauna silvestre depende, não só da seleção cuidada do protetor em si e das estacas que o suportam, mas também do cuidado com que é feita a instalação. Para uma correta instalação dos protetores é necessário seguir algumas regras simples, que irão garantir que aqueles cumprem o seu objetivo até se desgastarem com o uso e precisarem de ser removidos.
A Simflowny-based high-performance 3D code for the generalized induction equation
Creators: name: Viganò, Daniele
name: Martínez-Gómez, David
name: Pons, José A.
name: Palenzuela, Carlos
name: Carrasco, Federico
name: Miñano, Borja
name: Arbona, Antoni
name: Bona, Carles
name: Massó, Joan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: In the interior of neutron stars, the induction equation regulates the long-term evolution of the magnetic fields by means of resistivity, Hall dynamics and ambipolar diffusion. Despite the apparent simplicity and compactness of the equation, the dynamics it describes is not trivial and its understanding relies on accurate numerical simulations. While a few works in 2D have reached a mature stage and a consensus on the general dynamics at least for some simple initial data, only few attempts have been performed in 3D, due to the computational costs and the need for a proper numerical treatment of the intrinsic non-linearity of the equation. Here, we carefully analyze the general induction equation, studying its characteristic structure, and we present a new Cartesian 3D code, generated by the user-friendly, publicly available {\em Simflowny} platform. The code uses high-order numerical schemes for the time and spatial discretization, and relies on the highly-scalable {\em SAMRAI} architecture for the adaptive mesh refinement. We present the application of the code to several benchmark tests, showing the high order of convergence and accuracy achieved and the capabilities in terms of magnetic shock resolution and three-dimensionality. This paper paves the way for the applications to a realistic, 3D long-term evolution of neutron stars interior and, possibly, of other astrophysical sources.
description: 23 pages, 13 figures. In press
The HERMES Spectrometer
Creators: name: Ackerstaff, K.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The HERMES experiment is collecting data on inclusive and semi-inclusive deep inelastic scattering of polarised positrons from polarised targets of H, D, and He. These data give information on the spin structure of the nucleon. This paper describes the forward angle spectrometer built for this purpose. The spectrometer includes numerous tracking chambers (micro-strip gas chambers, drift and proportional chambers) in front of and behind a 1.3 T.m magnetic field, as well as an extensive set of detectors for particle identification (a lead-glass calorimeter, a pre-shower detector, a transition radiation detector, and a threshold Cherenkov detector). Two of the main features of the spectrometer are its good acceptance and identification of both positrons and hadrons, in particular pions. These characteristics, together with the purity of the targets, are allowing HERMES to make unique contributions to the understanding of how the spins of the quarks contribute to the spin of the nucleon.
description: 37 pages, 32 figures, 4 tables
Degeeriella rufa subsp. rufa rufa (Burmeister 1838
Creators: name: Gonza ́ Lez-Acun, Daniel A.
name: Palma, Ricardo L.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Degeeriella
Degeeriella rufa
Degeeriella rufa rufa (burmeister, 1838)

description: Degeeriella rufa rufa (Burmeister, 1838)
 Nirmus rufus Burmeister, 1838: 430.
 Degeeriella rufa Nitzsch [in Burmeister], 1838 [sic]; Harrison 1916: 122.
 Degeeriella rufa (Burmeister, 1838); Hopkins & Clay 1952: 113.
 Degeeriella rufa rufa (Burmeister, 1838); Clay 1958a: 180, figs 5, 10, 18–22, 38, 55, 75, 95, 104, 107, 111, 120, 129, 139–164; pl. 6: fig. 3; pl. 8: fig. 7.
 Degeeriella rufa (Burmeister, 1838); Price et al. 2003: 175.
 Degeeriella rufa (Burmeister, 1838); González-Acuña et al. 2008a: 283.
 Degeeriella rufa (Burmeister, 1838); Moreno & González-Acuña 2015: 95.
 Degeeriella rufa (Burmeister, 1838); González-Acuña & Moreno 2018: 262.
 Degeeriella rufa rufa (Burmeister, 1838); Palma 2017: 109.
Status, sex and repository of types unknown, presumed lost (see Palma 2017: 109).
 Type host: Falco tinnunculus Linnaeus, 1758.
 Chilean hosts: Falco femoralis Temminck, 1822; Falco peregrinus Tunstall, 1771.
 Other hosts: Polihierax insignis Walden, 1872 and twenty-two species of Falco (see Price et al. 2003: 175).
Chilean localities: Not given.
Geographic distribution: All continents, except Antarctica.
 Chilean references: González-Acuña et al. (2008a); Moreno & González-Acuña (2015); González-Acuña & Moreno (2018).
 Other significant references: Clay (1958a); Palma (1996: 174); Price et al. (2003); Martín-Mateo (2009: 87, fig. 20C); Palma (2010: 408); Palma (2017).
 Remarks: Degeeriella rufa is a morphologically variable species (Clay 1958a: 181). Contrary to Price et al. (2003: 175), we follow Clay (1958a) and regard some subspecies of Degeeriella rufa as valid taxa (see below).
description: Published as part of Gonza ́ Lez-Acun, Daniel A. & Palma, Ricardo L., 2021, An annotated catalogue of bird lice (Insecta: Phthiraptera) from Chile, pp. 1-151 in Zootaxa 5077 (1) on pages 65-66, DOI: 10.11646/zootaxa.5077.1.1, http://zenodo.org/record/5766642
Dynamics, radiation and overall energy budget of earthquake rupture with coseismic off-fault damage
Creators: name: Okubo, Kurama
name: Bhat, Harsha S.
name: Rougier, Esteban
name: Marty, Samson
name: Schubnel, Alexandre
name: Lei, Zhou
name: Knight, Earl E.
name: Klinger, Yann
Publisher: name: arXiv
Year: 2019
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Earthquake ruptures dynamically activate coseismic off-fault damage around fault cores. Systematic field observation efforts have shown the distribution of off-fault damage around main faults, while numerical modeling using elastic-plastic off-fault material models has demonstrated the evolution of coseismic off-fault damage during earthquake ruptures. Laboratory scale micro-earthquake experiments have pointed out the enhanced high-frequency radiation due to the coseismic off-fault damage. However, the detailed off-fault fracturing mechanisms, subsequent radiation and its contribution to the overall energy budget remain to be fully understood because of limitations of current observational techniques and model formulations. Here, we constructed a new physics-based dynamic earthquake rupture modeling framework, based on the combined finite-discrete element method (FDEM), to investigate the fundamental mechanisms of coseismic off-fault damage, and its effect on the rupture dynamics, the radiation and the overall energy budget. We conducted a 2-D systematic case study with depth and showed the mechanisms of dynamic activation of the coseismic off-fault damage. We found the decrease in rupture velocity and the enhanced high-frequency radiation in near-field due to the coseismic off-fault damage. We then evaluated the overall energy budget, which shows a significant contribution of the coseismic off-fault damage to the overall energy budget even at depth, where the damage zone width becomes narrower. The present numerical framework for the dynamic earthquake rupture modeling thus provides the insight into the earthquake rupture dynamics with the coseismic off-fault damage.
Electroluminescence from multi-particle exciton complexes in transition metal dichalcogenide semiconductors
Creators: name: Paur, Matthias
name: Molina-Mendoza, Aday J.
name: Bratschitsch, Rudolf
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Mueller, Thomas
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Light emission from higher-order correlated excitonic states has been recently reported in hBN-encapsulated monolayer WSe2 and WS2 upon optical excitation. These exciton complexes are found to be bound states of excitons residing in opposite valleys in momentum space, a promising feature that could be employed in valleytronics or other novel optoelectronic devices. However, electrically-driven light emission from such exciton species is still lacking. Here we report electroluminescence from bright and dark excitons, negatively charged trions and neutral and negatively charged biexcitons, generated by a pulsed gate voltage, in hexagonal boron nitride encapsulated monolayer WSe2 and WS2 with graphene as electrode. By tailoring the pulse parameters we are able to tune the emission intensity of the different exciton species in both materials. We find the electroluminescence from charged biexcitons and dark excitons to be as narrow as 2.8 meV.
Some Advantages of SUSY SU(4) x SU(2)_L x SU(2)_R Model in String Derived SO(10) GUTs
Creators: name: Murayama, Akihiro
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A D-parity violated SUSY SU(4) x SU(2) _ L x SU(2)_R gauge model with the Higgs sector 2{(4,1,2)+(4-bar,1, 2)}+(1,2,2)+some(1,1,1)'s is shown to have the following advantages: (i) It is the simplest and almost unique solution that satisfies M_X = M_{string} ~0.6 x 10^{18} GeV and M_{INT} ~ 5 x10^{11} GeV in superstring derived SUSY SO(10) GUTs. (ii) The proton is stable enough by the automatic "doublet-triplet splitting" closely connected with the D-parity violation. (iii) The minimization of SUSY one-loop effective potential in a toy model suggests that the SO(10) gauge theory tends to break dynamically down to the SU(4) x SU(2)_ L x SU(2)_R model.
description: 10 pages, Latex
title: A point of view about the control of a reusable engine cluster
Creators: name: COLAS, Stephane
name: GONIDEC, Serge Le
name: SAUNOIS, Philippe
name: GANET, Martine
name: REMY, Antoine
name: LEBOEUF, Vincent
Publisher: name: Proceedings of the 8th European Conference for Aeronautics and Space Sciences. Madrid, Spain, 1-4 july 2019
Year: 2019
Subjects: AUTOMATIC LANDING
SPACE PROPULSION
AVIONICS
GNC
LIQUID ROCKET ENGINES

description: In the framework of studies on reusable liquid propulsion engines and reusable launchers, some control problematics are highlighted. These questions open the field of possibilities to control a multi-engine bay under maintainability, controllability and safety constraints. This complex new system imposes new needs such as for example high throttling capabilities, monitoring and maintenance tools. The strong interaction between the launcher Guidance Navigation Control (GNC) system on one hand and the Engine Control System (ECS) with its monitoring on the other hand, while introducing the challenges of cost, reliability and stability, may lead to the deployment of new functions. These functions are either already evaluated but not deployed, or to be designed or even just imagined. This article will illustrate the associated issues, seen from an automatic control perspective. Topics covered include: - Engine cycle intrinsic dynamics vs. engine control performance - Engine control performance vs. performance modulation dynamics - Engine monitoring and interaction with engine control - Engine monitoring and propulsive bay reliability - Thrust Vector Control of the Bay - Methods and tools for reusable engine cluster The notion of reusability as well as that of multi-engine bay offers new needs and therefore new thought on control system architectures; that is what we are going to highlight in this paper.
title: Ethiopian Journals of Environment and Development, Vol. 1 No. 1 (2019): Networks, Perceptions, and Migration Decisions: A Comparative Analysis of Young Migrants from the Gurage and Wolayita Areas to Addis Ababa
title: Networks, Perceptions, and Migration Decisions: A Comparative Analysis of Young Migrants from the Gurage and Wolayita Areas to Addis Ababa
titleType: AlternativeTitle
Creators: name: Ethiopian Journals Of Environment And Development
Publisher: name: Ethiopian Journals of Environment and Development
Year: 2021

description: Abstract
In Ethiopia, rural-urban migration has been visibly dominated by the mobility of the youth. Scholarly works in the area have exhaustively identified the prominent causes as well as effects of this pattern of mobility. By going beyond the push-pull categorization, this study comparatively examines the role of social networks in the migration decision of young rural-urban migrants. Precisely, revealing the nexus between social networks, migrants’ perceptions of their home, and destination, vis-à-vis migration decision has been the concern of this inquiry. The study being of a qualitative type, interview and focus group discussion were employed as the main instruments of data collection. Having adopted a purposive sampling design, participants of the study were selected by using snowball and quota sampling techniques.
Statistical Physics of Traffic Flow
Creators: name: Schadschneider, Andreas
Publisher: name: arXiv
Year: 2000
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The modelling of traffic flow using methods and models from physics has a long history. In recent years especially cellular automata models have allowed for large-scale simulations of large traffic networks faster than real time. On the other hand, these systems are interesting for physicists since they allow to observe genuine nonequilibrium effects. Here the current status of cellular automata models for traffic flow is reviewed with special emphasis on nonequilibrium effects (e.g. phase transitions) induced by on- and off-ramps.
description: 23 pages, 18 figures, uses Elsevier macros
Degeeriella rufa subsp. carruthi Emerson 1953
Creators: name: Gonza ́ Lez-Acun, Daniel A.
name: Palma, Ricardo L.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Degeeriella
Degeeriella rufa
Degeeriella rufa carruthi emerson, 1953

description: Degeeriella rufa carruthi Emerson, 1953
 Degeeriella carruthi Emerson, 1953: 132, figs 2, 5.
 Degeeriella rufa carruthi Emerson, 1953; Clay 1958a: 185, figs 126–128.
 Degeeriella carruthi Emerson, 1953; Price et al. 2003: 173.
 Degeeriella carruthi Emerson, 1953; González-Acuña et al. 2008a: 283.
 Degeeriella carruthi Emerson, 1953; González-Acuña et al. 2011b: 190.
 Degeeriella carruthi Emerson, 1953; Moreno & González-Acuña 2015: 95, figs 4A–B.
 Degeeriella carruthi Emerson, 1953; González-Acuña & Moreno 2018: 262.
Holotype ♂ in USNM.
 Type host: Falco sparverius sparverius Linneaus, 1758.
 Chilean host: Falco sparverius Linneaus, 1758.
Other hosts: None.
Chilean locality: Chillán: Region XVI.
Geographic distribution: North, Central and South America.
 Chilean references: González-Acuña et al. (2008a; 2011b); Moreno & González-Acuña (2015); González-Acuña & Moreno (2018).
 Other significant references: Clay (1958a); Price et al. (2003).
 Remarks: Contrary to Price et al. (2003: 175), we follow Clay (1958a) and regard this louse as a subspecies of Degeeriella rufa.
  Genus Docophoroides Giglioli, 1864
 Docophoroides “Denny MSS” Giglioli, 1864. Quart. Jour. Sci. 4, 21. Type species: Philopterus brevis Dufour, 1835 = Docophoroides brevis (Dufour, 1835) (by monotypy).
 Eurymetopus Taschenberg, 1882. Nova Acat Leop.-Carol. 44, 182. Type species: Lipeurus taurus Nitzsch [in Giebel], 1866 = Docophoroides brevis (Dufour, 1835) (by subsequent designation). Preoccupied by Eurymetopus Scho ̈nherr, 1840.
description: Published as part of Gonza ́ Lez-Acun, Daniel A. & Palma, Ricardo L., 2021, An annotated catalogue of bird lice (Insecta: Phthiraptera) from Chile, pp. 1-151 in Zootaxa 5077 (1) on page 66, DOI: 10.11646/zootaxa.5077.1.1, http://zenodo.org/record/5766642