cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Holothuria (Holothuria) dakarensis Panning 1939
Creators: name: Madeira, Patrícia
name: Kroh, Andreas
name: Cordeiro, Ricardo
name: De, António M.
name: Martins, Frias
name: Ávila, Sérgio P.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Echinodermata
Holothuroidea
Aspidochirotida
Holothuriidae
Holothuria
Holothuria dakarensis

description: Erroneous— Holothuria (Holothuria) dakarensis Panning, 1939   Reports for the Azores:
 non Holothuria dakarensis Panning, 1939 — Rowe 1969: 153, 154 [misidentified];
 Holothuria (Holothuria) dakarensis Panning, 1939 — Pérez-Ruzafa et al. 1992b: 154–155, 1999: 57, 2002: 287–288 [based on Rowe 1969].
 Type locality: Dakar (Senegal).
 See: Cherbonnier (1950); Borrero-Pérez et al. (2009); Pawson et al. (2010: 37–38, fig. 30); Prata et al. (2014).
 Occurrence: Atlantic, in the west from off Georgia south to the Gulf of Mexico (Pawson et al. 2010) and Rio Grande do Norte (Brazil; Prata et al. 2014) and in the east from Dakar (Senegal) and Cape Verde to Angola (Cherbonnier 1950, 1965, Borrero-Pérez et al. 2009).
 Depth: 1–54 m (Borrero-Pérez et al. 2009, Prata et al. 2014).
 Habitat: under rocks on sand or mud (Borrero-Pérez et al. (2009).
 Larval stage: probably planktotrophic (inferred from the genus; see McEdward & Miner 2001).
 Remarks: in a review of the family Holothuriidae, Rowe (1969) listed the Azores under the geographical distribution of Holothuria dakarensis, a statement repeated by subsequent works. Pawson & Shirley (1977) believed that Rowe based his statement on material from Faial Island, deposited in the collection of the British Natural History Museum. On re-examination, the authors concluded the specimens belonged either to H. mammata or H. tubulosa rather than H. dakarensis. Furthermore, Borrero-Pérez et al. (2009) showed that H. dakarensis was historically confused with H. mammata, restricting the geographical range of H. dakarensis in the East Atlantic to southern latitudes of the African coasts, from Senegal and Cape Verde to Angola.
description: Published as part of Madeira, Patrícia, Kroh, Andreas, Cordeiro, Ricardo, De, António M., Martins, Frias & Ávila, Sérgio P., 2019, The Echinoderm Fauna of the Azores (NE Atlantic Ocean), pp. 1-231 in Zootaxa 4639 (1) on page 175, DOI: 10.11646/zootaxa.4639.1, http://zenodo.org/record/3342161
SEDIGISM-ATLASGAL: Dense Gas Fraction and Star Formation Efficiency Across the Galactic Disk
Creators: name: Urquhart, J. S.
name: Figura, C.
name: Cross, J. R.
name: Wells, M. R. A.
name: Moore, T. J. T.
name: Eden, D. J.
name: Ragan, S. E.
name: Pettitt, A. R.
name: Duarte-Cabral, A.
name: Colombo, D.
name: Schuller, F.
name: Csengeri, T.
name: Mattern, M.
name: Beuther, H.
name: Menten, K. M.
name: Wyrowski, F.
name: Anderson, L. D.
name: Barnes, P. J.
name: Beltrán, M. T.
name: Billington, S. J.
name: Bronfman, L.
name: Giannetti, A.
name: Kainulainen, J.
name: Kauffmann, J.
name: Lee, M. -Y.
name: Leurini, S.
name: Medina, S. -N. X.
name: Montenegro-Montes, F. M.
name: Riener, M.
name: Rigby, A. J.
name: Sánchez-Monge, A.
name: Schilke, P.
name: Schisano, E.
name: Traficante, A.
name: Wienen, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: By combining two surveys covering a large fraction of the molecular material in the Galactic disk we investigate the role the spiral arms play in the star formation process. We have matched clumps identified by ATLASGAL with their parental GMCs as identified by SEDIGISM, and use these giant molecular cloud (GMC) masses, the bolometric luminosities, and integrated clump masses obtained in a concurrent paper to estimate the dense gas fractions (DGF$_{\rm gmc}=\sum M_{\rm clump}/M_{\rm gmc}$) and the instantaneous star forming efficiencies (i.e., SFE$_{\rm gmc} = \sum L_{\rm clump}/M_{\rm gmc}$). We find that the molecular material associated with ATLASGAL clumps is concentrated in the spiral arms ($\sim$60% found within $\pm$10 km s$^{-1}$ of an arm). We have searched for variations in the values of these physical parameters with respect to their proximity to the spiral arms, but find no evidence for any enhancement that might be attributable to the spiral arms. The combined results from a number of similar studies based on different surveys indicate that, while spiral-arm location plays a role in cloud formation and HI to H$_2$ conversion, the subsequent star formation processes appear to depend more on local environment effects. This leads us to conclude that the enhanced star formation activity seen towards the spiral arms is the result of source crowding rather than the consequence of a any physical process.
description: 15 pages, 12 figures. Full list of affiliations can be found at the end of the paper
Be stars: one ring to rule them all?
Creators: name: Meilland, Anthony
name: Stee, Philippe
name: Zorec, Juan
name: Kanaan, Samer
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Aims. We report theoretical spectral energy distributions (SEDs), Br$γ$ line profiles and visibilities for two scenarios that can explain the disk dissipation of active hot stars an account for the transition from the Be to the B spectroscopic phase. Methods. We use the SIMECA code to investigate these two scenarios: the first one where the disk is formed by successive outbursts of the central star. A low-density region is developing above the star and slowly grows outward and forms a ring-like structure that will gradually excavate the disk. The second one, where a slowly decreasing mass loss, for instance due to a decrease of the radiative force through an opacity change at the base of the photosphere, may also be responsible for the vanishing of the circumstellar disk. Results. We obtain that a clear signature of the disk dissipation following the ring scenario will be the disappearance of the high velocity tails in the emission lines and a nearly constant peaks separation. Moreover, we found that following the ring-like scenario the visibilities must show an increasing second lobe, an increase of the value of the first zero and, assuming an unresolved central star, a first zero of the visibility curves that appends at shorter baselines as far as the disk is been excavate. We propose to use the AMBER instrument on the VLTI to probe if the the ring scenario is the one that rule the Be phenomenon.
description: 10 pages
Determinant Quantum Monte Carlo Study of the Screening of the One Body Potential near a Metal-Insulator Transition
Creators: name: Chakraborty, P. B.
name: Denteneer, P. J. H.
name: Scalettar, R. T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: In this paper we present a determinant quantum monte carlo study of the two dimensional Hubbard model with random site disorder. We show that, as in the case of bond disorder, the system undergoes a transition from an Anderson insulating phase to a metallic phase as the onsite repulsion U is increased beyond a critical value U_c. However, there appears to be no sharp signal of this metal-insulator transition in the screened site energies. We observe that, while the system remains metallic for interaction values upto twice U_c, the conductivity is maximal in the metallic phase just beyond U_c, and decreases for larger correlation.
description: 6 pages, 10 eps figures, Revtex4
Sećanje na prvu diplomku iz oblasti elektrotehnike - Desanku Jovanović rođenu Perišić
Creators: name: Miljković, Nadica
Publisher: name: Zenodo
Year: 2023
Subjects: Elektrotehnički fakultet
Univerzitet u Beogradu
rodna ravnopravnost
elektrotehnika
žene u inženjerstvu
Desanka Jovanović rođena Perišić
biografija

description: Članak "Sećanje na prvu diplomku iz oblasti elektrotehnike - Desanku Jovanović rođenu Perišić" je pisan za potrebe jubilarne publikacije povodom Dana Elektrotehničkog fakulteta, Univerziteta u Beogradu.
Co-contractions of Graphs and Right-angled Artin Groups
Creators: name: Kim, Sang-hyun
Publisher: name: arXiv
Year: 2006
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20F36, 20F65, 05C25

description: We define an operation on finite graphs, called co-contraction. By showing that co-contraction of a graph induces an injective map between right-angled Artin groups, we exhibit a family of graphs, without any induced cycle of length at least 5, such that the right-angled Artin groups on those graphs contain hyperbolic surface groups. This gives the negative answer to a question raised by Gordon, Long and Reid.
description: 18 pages, 8 figures
Sećanje na prvu diplomku iz oblasti elektrotehnike - Desanku Jovanović rođenu Perišić
Creators: name: Miljković, Nadica
Publisher: name: Zenodo
Year: 2023
Subjects: Elektrotehnički fakultet
Univerzitet u Beogradu
rodna ravnopravnost
elektrotehnika
žene u inženjerstvu
Desanka Jovanović rođena Perišić
biografija

description: Članak "Sećanje na prvu diplomku iz oblasti elektrotehnike - Desanku Jovanović rođenu Perišić" je pisan za potrebe jubilarne publikacije povodom Dana Elektrotehničkog fakulteta, Univerziteta u Beogradu. Rad je pisan latiničnim (Desanka Jovanovic rodjena Perisic.pdf) i ćiriličnim (Desanka Jovanovic rodjena Perisic cirilica.pdf) pismom.
description: U verziji 2 korigovane su štamparske greške i dodat je članak pisan u ćirilici, pored članka u latinici.
Sećanje na prvu diplomku iz oblasti elektrotehnike - Desanku Jovanović rođenu Perišić (in English: The Reminiscence of the First Graduate in the Field of Electrical Engineering - Desanka Jovanović born Perišić)
Creators: name: Miljković, Nadica
Publisher: name: Zenodo
Year: 2023
Subjects: Elektrotehnički fakultet
Univerzitet u Beogradu
rodna ravnopravnost
elektrotehnika
žene u inženjerstvu
Desanka Jovanović rođena Perišić
biografija
Faculty of Electrical Engineering
School of Electrical Engineering
University of Belgrade
gender equality
electrical engineering
women in engineering
biography

description: SADRŽAJ REPOZITORIJUMA
Članak "Sećanje na prvu diplomku iz oblasti elektrotehnike - Desanku Jovanović rođenu Perišić" je pisan za potrebe jubilarne publikacije povodom Dana Elektrotehničkog fakulteta, Univerziteta u Beogradu (ETF) u 2023. godini.
Rad je pisan latiničnim (Desanka Jovanovic rodjena Perisic.pdf) i ćiriličnim (Desanka Jovanovic rodjena Perisic cirilica.pdf) pismom. Dodatno, repozitorijum sadrži i verziju članka koji je preveden na engleski jezik (Desanka Jovanovic born Perisic.pdf). Članak je sa srpskog na engleski jezik preveo dr Miloš D. Đurić, nastavnik stranog jezika na ETF-u.
REPOSITORY CONTENT
Article "The Reminiscence of the First Graduate in the Field of Electrical Engineering - Desanka Jovanović born Perišić" was written for the jubilee publication on the occasion of the anniversary of University of Belgrade - School of Electrical Engineering (ETF) in 2023.
The article is written in both Latin (Desanka Jovanovic rodjena Perisic.pdf) and Cyrillic (Desanka Jovanovic rodjena Perisic cirilica.pdf) scripts. Also, the repository contains an article version translated in English language (Desanka Jovanovic born Perisic.pdf). The article was translated from Serbian to English language by Dr. Miloš D. Đurić, Foreign Language Teacher at the ETF.
description: Treća verzija sadrži rad preveden na engleski jezik.
Version 3 contains paper translated in English language.
Transient optical response of ultrafast nonequilibrium excited metals: Effects of electron-electron contribution to collisional absorption
Creators: name: Colombier, Jean-Philippe
name: Combis, Patrick
name: Audouard, Eric
name: Stoian, Razvan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Approaching energy coupling in laser-irradiated metals, we point out the role of electron-electron collision as an efficient control factor for ultrafast optical absorption. The high degree of laser-induced electron-ion nonequilibrium drives a complex absorption pattern with consequences on the transient optical properties. Consequently, high electronic temperatures determine largely the collision frequency and establish a transition between absorptive regimes in solid and plasma phases. In particular, taking into account umklapp electron-electron collisions, we performed hydrodynamic simulations of the laser-matter interaction to calculate laser energy deposition during the electron-ion nonequilibrium stage and subsequent matter transformation phases. We observe strong correlations between optical and thermodynamic properties according to the experimental situations. A suitable connection between solid and plasma regimes is chosen in accordance with models that describe the behavior in extreme, asymptotic regimes. The proposed approach describes as well situations encountered in pump-probe types of experiments, where the state of matter is probed after initial excitation. Comparison with experimental measurements shows simulation results which are sufficiently accurate to interpret the observed material behavior. A numerical probe is proposed to analyze the transient optical properties of matter exposed to ultrashort pulsed laser irradiation at moderate and high intensities. Various thermodynamic states are assigned to the observed optical variation. Qualitative indications of the amount of energy coupled in the irradiated targets are obtained. Keywords: ultrafast absorption ; umklapp electron-electron collision ; collisional absorption ; laser-matter interaction
X-ray and optical variability of Seyfert 1 galaxies as observed with XMM-Newton
Creators: name: Smith, R.
name: Vaughan, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have examined simultaneous X-ray and optical light curves of a sample of eight nearby Seyfert 1 galaxies observed using the EPIC X-ray cameras and Optical Monitor on board XMM. The observations span ~1 day and revealed optical variability in four of the eight objects studied. In all cases, the X-ray variability amplitude exceeded that of the optical both in fractional and absolute luminosity terms. No clearly significant correlations were detected between wavebands using cross correlation analysis. We conclude that, in three of the four objects in which optical variability was detected, reprocessing mechanisms between wavebands do not dominate either the optical or X-ray variability on the time-scales probed.
description: 9 pages, 2 figures, accepted for publication in MNRAS
Distinct High Energy Cutoff Variation Patterns in Two Seyfert Galaxies
Creators: name: Kang, Jia-Lai
name: Wang, Jun-Xian
name: Kang, Wen-Yong
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Investigating how the cutoff energy $E_{\rm cut}$ varies with X-ray flux and photon index $Γ$ in individual AGNs opens a new window to probe the yet unclear coronal physics. So far $E_{\rm cut}$ variations have only been detected in several AGNs but different patterns have been reported. Here we report new detections of $E_{\rm cut}$ variations in two Seyfert galaxies with multiple NuSTAR exposures. While in NGC 3227 $E_{\rm cut}$ monotonically increases with $Γ$, the $E_{\rm cut}$-$Γ$ relation exhibits a $Λ$ shape in SWIFT J2127.4+5654 ($E_{\rm cut}$ increasing with $Γ$ at $Γ$ $\lesssim$ 2.05, but reversely decreasing at $Γ$ $\gtrsim$ 2.05), indicating more than a single underlying mechanism is involved. Meanwhile both galaxies show softer spectra while they brighten in X-ray, a common phenomenon in Seyfert galaxies. Plotting all 7 AGNs with $E_{\rm cut}$ variations ever reported with NuSTAR observations in the $E_{\rm cut}$-$Γ$ diagram, we find they could be unified with the $Λ$ pattern. Although the sample is small and SWIFT J2127.4+5654 is the only source with $Γ$ varying across the break point thus the only one exhibiting the complete $Λ$ pattern in a single source, the discoveries shed new light on the coronal physics in AGNs. Possible underlying physical mechanisms are discussed.
description: 9 pages, 6 figures, accepted by MNRAS
Gravito-magnetic instabilities of Relativistic Magnetohydrodynamics
Creators: name: Noh, Hyerim
name: Hwang, Jai-chan
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study gravito-magnetic instabilities of a static homogeneous medium with an aligned magnetic field in the two contexts of relativistic magnetohydrodynamics (MHD): first, MHD with post-Newtonian (PN) corrections, and second, special relativistic (SR) MHD with weak gravity. The analysis in the PN MHD is made without taking the temporal gauge condition, thus results are gauge-invariant. The PN corrections of the internal energy, pressure, sound velocity and the Alfvén velocity lower the critical (Jeans) wavelength. {All relativistic effects tend to destabilize the system.} Although the SR MHD with weak gravity is presented in the harmonic gauge, in the presence of gravity the stability analysis is strictly valid to Newtonian order. In the absence of gravity, the SR MHD is independent of the gauge condition. We present the plane wave velocities and the stability criteria in both cases.
description: 10 pages, 4 figures
Completeness of the Coulomb scattering wave functions
Creators: name: Mukhamedzhanov, A. M.
name: Akin, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Completeness of the eigenfunctions of a self-adjoint Hamiltonian, which is the basic ingredient of quantum mechanics, plays an important role in nuclear reaction and nuclear structure theory. However, until now, there was no a formal proof of the completeness of the eigenfunctions of the two-body Hamiltonian with the Coulomb interaction. Here we present the first formal proof of the completeness of the two-body Coulomb scattering wave functions for repulsive unscreened Coulomb potential. To prove the completeness we use the Newton's method [R. Newton, J. Math Phys., 1, 319 (1960)]. The proof allows us to claim that the eigenfunctions of the two-body Hamiltonian with the potential given by the sum of the repulsive Coulomb plus short-range (nuclear) potentials also form a complete set. It also allows one to extend the Berggren's approach of modification of the complete set of the eigenfunctions by including the resonances for charged particles. We also demonstrate that the resonant Gamow functions with the Coulomb tail can be regularized using Zel'dovich's regularization method.
description: 12 pages and 1 figure
Towards Efficient and Scalable Acceleration of Online Decision Tree Learning on FPGA
Creators: name: Lin, Zhe
name: Sinha, Sharad
name: Zhang, Wei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Decision trees are machine learning models commonly used in various application scenarios. In the era of big data, traditional decision tree induction algorithms are not suitable for learning large-scale datasets due to their stringent data storage requirement. Online decision tree learning algorithms have been devised to tackle this problem by concurrently training with incoming samples and providing inference results. However, even the most up-to-date online tree learning algorithms still suffer from either high memory usage or high computational intensity with dependency and long latency, making them challenging to implement in hardware. To overcome these difficulties, we introduce a new quantile-based algorithm to improve the induction of the Hoeffding tree, one of the state-of-the-art online learning models. The proposed algorithm is light-weight in terms of both memory and computational demand, while still maintaining high generalization ability. A series of optimization techniques dedicated to the proposed algorithm have been investigated from the hardware perspective, including coarse-grained and fine-grained parallelism, dynamic and memory-based resource sharing, pipelining with data forwarding. We further present a high-performance, hardware-efficient and scalable online decision tree learning system on a field-programmable gate array (FPGA) with system-level optimization techniques. Experimental results show that our proposed algorithm outperforms the state-of-the-art Hoeffding tree learning method, leading to 0.05% to 12.3% improvement in inference accuracy. Real implementation of the complete learning system on the FPGA demonstrates a 384x to 1581x speedup in execution time over the state-of-the-art design.
description: appear as a conference paper in FCCM 2019
Direct photons and dilepton measurements at PHENIX
Creators: name: Doomra, Vassu
Publisher: name: Zenodo
Year: 2024
Subjects: hp24
phenix
photon
direct photon
thermal photon
dielectron
dilepton
elliptic
flow
invariant yield
au+au
p+p
scaling
multiplicity
dca
charmonium
charm
bottom
drell-yan

description: Talk presented at the Hard and Electromagnetic Probes of High-Energy Nuclear Collisions 2024 conference
Holothuria (Holothuria) tubulosa Gmelin 1791
Creators: name: Madeira, Patrícia
name: Kroh, Andreas
name: Cordeiro, Ricardo
name: De, António M.
name: Martins, Frias
name: Ávila, Sérgio P.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Echinodermata
Holothuroidea
Aspidochirotida
Holothuriidae
Holothuria
Holothuria tubulosa

description: Erroneous— Holothuria (Holothuria) tubulosa Gmelin, 1791   Reports for the Azores:
 non Holothuria tubulosa Gmelin, 1790 — Nobre 1924: 89, 1930: 23, 1938: 143–144, figs. 58.1, 69.1 [misidentification]; Pawson & Shirley 1977: 915 [based on previous misidentifications]; Marques 1983: 4, fig. 8 [misidentification]; Pereira 1997: 333 [based on previous misidentifications]; Morton et al. 1998: 98, 169, figs. 5.2T, 8.8R [misidentification]; Wirtz 2009a: 46 [misidentification]; Micael & Costa 2010: 323 [based on previous misidentifications]; Micael et al. 2010: 329 [based on previous misidentifications]; Micael et al. 2012: 4 [based on previous misidentifications].
 Type locality: Mediterranean Sea.
 See: Tortonese (1965: 53–56, figs. 16, 17); Borrero-Pérez et al. (2009).
 Occurrence: Mediterranean Sea (Tortonese 1965).
 Depth: 0–100 m (Tortonese 1965).
 Habitat: sand, mud to gravel, on sea grass prairies (Tortonese 1965).
 Larval stage: probably planktotrophic (inferred from the genus; see McEdward & Miner 2001).
 Commercial value: edible (Sicuro & Levine 2011).
 Remarks: see remarks under H. mammata.
description: Published as part of Madeira, Patrícia, Kroh, Andreas, Cordeiro, Ricardo, De, António M., Martins, Frias & Ávila, Sérgio P., 2019, The Echinoderm Fauna of the Azores (NE Atlantic Ocean), pp. 1-231 in Zootaxa 4639 (1) on page 176, DOI: 10.11646/zootaxa.4639.1, http://zenodo.org/record/3342161
Statistics of Transmission Eigenvalues in Two-Dimensional Quantum Cavities: Ballistic versus Stochastic Scattering
Creators: name: Rotter, Stefan
name: Aigner, Florian
name: Burgdörfer, Joachim
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We investigate the statistical distribution of transmission eigenvalues in phase-coherent transport through quantum dots. In two-dimensional ab-initio simulations for both clean and disordered two-dimensional cavities, we find markedly different quantum-to-classical crossover scenarios for these two cases. In particular, we observe the emergence of ``noiseless scattering states'' in clean cavities, irrespective of sharp-edged entrance and exit lead mouths. We find the onset of these ''classical'' states to be largely independent of the cavity's classical chaoticity, but very sensitive with respect to bulk disorder. Our results suggest that for weakly disordered cavities the transmission eigenvalue distribution is determined both by scattering at the disorder potential and the cavity walls. To properly account for this intermediate parameter regime we introduce a hybrid crossover scheme which combines previous models that are valid in the ballisic and the stochastic limit, respectively.
description: 6 pages, 5 figures; added references, final version
Laetmogone wyvillethomsoni Theel 1879
Creators: name: Madeira, Patrícia
name: Kroh, Andreas
name: Cordeiro, Ricardo
name: De, António M.
name: Martins, Frias
name: Ávila, Sérgio P.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Echinodermata
Holothuroidea
Elasipodida
Laetmogonidae
Laetmogone
Laetmogone wyvillethomsoni

description: Erroneous— Laetmogone wyvillethomsoni Théel, 1879   Reports for the Azores:
 non Laetmogone wyvillethomsoni Théel, 1879 — Hérouard 1902: 31–32, pl. 4, figs. 10–16 [misidentification]; Mortensen 1927a: 361 [based on Hérouard 1902]; Grieg 1932: 5, 46 [based on Hérouard 1902].
 Type locality: off Chile, Southern Pacific Ocean.
 See: Hansen (1975: 54–57, fig. 20); O’Loughlin (2002: 321).
 Occurrence: Southern Ocean and Antarctica (Hansen 1975).
 Depth: 245– 4,410 m (O’Loughlin 2002).
 Habitat: soft substrates (Hansen 1975).
 Remarks: Hansen (1975) believed that all historical reports of Laetmogone wyvillethomsoni from the Atlantic were misidentifications of closely similar species such as L. violacea. However, on re-examination of the specimens identified by Hérouard (1902) from the Azores, Hansen suggested that these animals belonged to a yet unnamed new species (see also remarks under L. violacea).
description: Published as part of Madeira, Patrícia, Kroh, Andreas, Cordeiro, Ricardo, De, António M., Martins, Frias & Ávila, Sérgio P., 2019, The Echinoderm Fauna of the Azores (NE Atlantic Ocean), pp. 1-231 in Zootaxa 4639 (1) on pages 176-177, DOI: 10.11646/zootaxa.4639.1, http://zenodo.org/record/3342161
An Ensemble Learning Approach for In-situ Monitoring of FPGA Dynamic Power
Creators: name: Lin, Zhe
name: Sinha, Sharad
name: Zhang, Wei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Hardware Architecture (cs.AR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: As field-programmable gate arrays become prevalent in critical application domains, their power consumption is of high concern. In this paper, we present and evaluate a power monitoring scheme capable of accurately estimating the runtime dynamic power of FPGAs in a fine-grained timescale, in order to support emerging power management techniques. In particular, we describe a novel and specialized ensemble model which can be decomposed into multiple customized decision-tree-based base learners. To aid in model synthesis, a generic computer-aided design flow is proposed to generate samples, select features, tune hyperparameters and train the ensemble estimator. Besides this, a hardware realization of the trained ensemble estimator is presented for on-chip real-time power estimation. In the experiments, we first show that a single decision tree model can achieve prediction error within 4.51% of a commercial gate-level power estimation tool, which is 2.41--6.07x lower than provided by the commonly used linear model. More importantly, we study the extra gains in inference accuracy using the proposed ensemble model. Experimental results reveal that the ensemble monitoring method can further improve the accuracy of power predictions to within a maximum error of 1.90%. Moreover, the lookup table (LUT) overhead of the ensemble monitoring hardware employing up to 64 base learners is within 1.22% of the target FPGA, indicating its light-weight and scalable characteristics.
description: published as a journal (TCAD) paper in 2018
Molpadiodemas atlanticus
Creators: name: Madeira, Patrícia
name: Kroh, Andreas
name: Cordeiro, Ricardo
name: De, António M.
name: Martins, Frias
name: Ávila, Sérgio P.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Echinodermata
Holothuroidea
Aspidochirotida
Synallactidae
Molpadiodemas
Molpadiodemas atlanticus

description: Erroneous— Molpadiodemas atlanticus (Perrier, 1898)   Reports for the Azores:
 Pseudostichopus atlanticus Perrier, 1898 — Deichmann 1930: 87–88.
 Type locality: between the Azores and European waters (42°19’00”N, 21°15’46”W).
 See: Perrier (1902: 333–337, pl. 17, figs. 15–20, as Pseudostichopus atlanticus); O’Loughlin & Ahearn (2005: 153, figs. 3a, b, 4a–d, 6a, b); Bohn (2006: 16–19, figs. 9A, 10).
 Occurrence: cosmopolitan, Atlantic and Pacific deep waters; from the Caribbean north to west of Greenland (O’Loughlin & Ahearn 2005), east to the West European Basin and south to Southern Africa (Bohn 2006).
 Depth: 2,610 – 5,415 m (O’Loughlin & Ahearn 2005, Bohn 2006).
 Habitat: mud (Perrier 1902).
 Remarks: see remarks under Molpadiodemas villosus.
description: Published as part of Madeira, Patrícia, Kroh, Andreas, Cordeiro, Ricardo, De, António M., Martins, Frias & Ávila, Sérgio P., 2019, The Echinoderm Fauna of the Azores (NE Atlantic Ocean), pp. 1-231 in Zootaxa 4639 (1) on page 178, DOI: 10.11646/zootaxa.4639.1, http://zenodo.org/record/3342161
Cosmology and Dark Matter at the LHC
Creators: name: Arnowitt, Richard
name: Aurisano, Adam
name: Dutta, Bhaskar
name: Kamon, Teruki
name: Kolev, Nikolay
name: Simeon, Paul
name: Toback, David
name: Wagner, Peter
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We examine the question of whether neutralinos produced at the LHC can be shown to be the particles making up the astronomically observed dark matter. If the WIMP alllowed region lies in the SUGRA coannihilation region, then a strong signal for this would be the unexpected near degeneracy of the stau and neutralino i.e., a mass difference ΔM\simeq (5-15) GeV. For the mSUGRA model we show such a small mass difference can be measured at the LHC using the signal 3τ+jet+E_T^{\rm miss}. Two observables, opposite sign minus like sign pairs and the peak of the ττmass distribution allows the simultaneous determination of ΔM to 15% and the gluino mass M_{\tilde g} to be 6% at the benchmark point of M_{\tilde g}=850 GeV, A_0=0, μ>0 with 30 fb^{-1}. With 10 fb^{-1}, ΔM can be determined to 22% and one can probe the parameter space up to m_{1/2}=700 GeV with 100 fb^{-1}.
description: 11 pages, 7 figures, Talk at IDM 2006, 11th September to 16th September, Greece
Theory of dynamical stability for two- and three-dimensional Lennard-Jones crystals
Creators: name: Ono, Shota
name: Ito, Tasuku
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The dynamical stability of three-dimensional (3D) Lennard-Jones (LJ) crystals has been studied for many years. The face-centered-cubic and hexagonal close packed structures are dynamically stable, while the body-centered cubic structure is stable only for long range LJ potentials that are characterized by relatively small integer pairs $(m,n)$. Here, we study the dynamical stability of two-dimensional (2D) LJ crystals, where the planar hexagonal, the buckled honeycomb, and the buckled square structures are assumed. We demonstrate that the stability property of 2D and 3D LJ crystals can be classified into four groups depending on $(m,n)$. The instabilities of the planar hexagonal, the buckled square, and the body-centered cubic structures are investigated within analytical expressions. The structure-stability relationship between the LJ crystals and the elemental metals in the periodic table is also discussed.
description: 6 pages, 7 figures
Prototype development of the Integral-Field unit for VIRUS
Creators: name: Kelz, Andreas
name: Bauer, Svend M.
name: Grupp, Frank
name: Hill, Gary J.
name: Popow, Emil
name: Palunas, Povilas
name: Roth, Martin M.
name: MacQueen, Phillip J.
name: Tripphahn, Ute
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: VIRUS is a planned integral-field instrument for the Hobby-Eberly Telescope (HET). In order to achieve a large field-of-view and high grasp at reasonable costs, the approach is to replicate integral-field units (IFU) and medium sized spectrographs many times. The Astrophysical Institute Potsdam (AIP) contributes to VIRUS with the development and testing of the IFU prototype. This paper describes the optomechanical design and the manufacture of the fiber-based IFU subsystem. The initial VIRUS development aims to produce a prototype and to measure its performance. Additionally, techniques will be investigated to allow industrial replication of the highly specific fiber-bundle layout. This will be necessary if this technique is to be applied to the next generation of even larger astronomical instrumentation.
description: 11 pages, 13 figures, to be published in SPIE proc. 6273
Decision Tree Based Hardware Power Monitoring for Run Time Dynamic Power Management in FPGA
Creators: name: Lin, Zhe
name: Zhang, Wei
name: Sinha, Sharad
Publisher: name: arXiv
Year: 2020
Subjects: subject: Hardware Architecture (cs.AR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Fine-grained runtime power management techniques could be promising solutions for power reduction. Therefore, it is essential to establish accurate power monitoring schemes to obtain dynamic power variation in a short period (i.e., tens or hundreds of clock cycles). In this paper, we leverage a decision-tree-based power modeling approach to establish fine-grained hardware power monitoring on FPGA platforms. A generic and complete design flow is developed to implement the decision tree power model which is capable of precisely estimating dynamic power in a fine-grained manner. A flexible architecture of the hardware power monitoring is proposed, which can be instrumented in any RTL design for runtime power estimation, dispensing with the need for extra power measurement devices. Experimental results of applying the proposed model to benchmarks with different resource types reveal an average error up to 4% for dynamic power estimation. Moreover, the overheads of area, power and performance incurred by the power monitoring circuitry are extremely low. Finally, we apply our power monitoring technique to the power management using phase shedding with an on-chip multi-phase regulator as a proof of concept and the results demonstrate 14% efficiency enhancement for the power supply of the FPGA internal logic.
description: published as a conference paper in FPL 2017
Pseudostichopus occultatus Marenzeller 1893
Creators: name: Madeira, Patrícia
name: Kroh, Andreas
name: Cordeiro, Ricardo
name: De, António M.
name: Martins, Frias
name: Ávila, Sérgio P.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Echinodermata
Holothuroidea
Aspidochirotida
Synallactidae
Pseudostichopus
Pseudostichopus occultatus

description: Erroneous— Pseudostichopus occultatus Marenzeller, 1893   Reports for the Azores:
 non Pseudostichopus occultatus Marenzeller, 1893 — $ Hérouard 1902: 14–15, pl. 2, figs. 4–14 [misidentified P. peripatus]; Nobre 1938: 156–157 [based on Hérouard 1902]; García-Diez et al. 2005: 51 [based on Hérouard 1902].
 Type locality: Mediterranean Sea.
 See: O’Loughlin & Ahearn (2005: 173–174); Mecho et al. (2014: 288–289, figs. 8A–D).
 Occurrence: Mediterranean Sea, reported also from Cape Finisterre, Galicia (NE Atlantic; O’Loughlin & Ahearn 2005).
 Depth: 363– 2,250 m (O’Loughlin & Ahearn 2005, Mecho et al. 2014).
 Habitat: mud (Marenzeller 1893).
 Remarks: Hérouard (1902) reported Pseudostichopus occultatus based on the material collected by Princesse Alice at two stations in Azorean waters (sta 527: 38°08’00”N, 23°15’45”W; sta 650: 36°54’00”N, 20°46’15”W). Later, Hérouard (1923) transferred these specimens to two newly described species P. lapidus (sta 527) and P. marenzelleri (sta 650). Both species are considered synonyms of P. peripatus.
description: Published as part of Madeira, Patrícia, Kroh, Andreas, Cordeiro, Ricardo, De, António M., Martins, Frias & Ávila, Sérgio P., 2019, The Echinoderm Fauna of the Azores (NE Atlantic Ocean), pp. 1-231 in Zootaxa 4639 (1) on page 179, DOI: 10.11646/zootaxa.4639.1, http://zenodo.org/record/3342161
A multi-band map of the natural night sky brightness including Gaia and Hipparcos integrated starlight
Creators: name: Masana, Eduard
name: Carrasco, Josep Manel
name: Bará, Salvador
name: Ribas, Salvador J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The natural night sky brightness is a relevant input for monitoring the light pollution evolution at observatory sites, by subtracting it from the overall sky brightness determined by direct measurements. It is also instrumental for assessing the expected darkness of the pristine night skies. The natural brightness of the night sky is determined by the sum of the spectral radiances coming from astrophysical sources, including zodiacal light, and the atmospheric airglow. The resulting radiance is modified by absorption and scattering before it reaches the observer. Therefore, the natural night sky brightness is a function of the location, time and atmospheric conditions. We present in this work GAMBONS (GAia Map of the Brightness Of the Natural Sky), a model to map the natural night brightness of the sky in cloudless and moonless nights. Unlike previous maps, GAMBONS is based on the extra-atmospheric star radiance obtained from the Gaia catalogue. The Gaia-DR2 archive compiles astrometric and photometric information for more than 1.6 billion stars up to G = 21 magnitude. For the brightest stars, not included in Gaia-DR2, we have used the Hipparcos catalogue instead. After adding up to the star radiance the contributions of the diffuse galactic and extragalactic light, zodiacal light and airglow, and taking into account the effects of atmospheric attenuation and scattering, the radiance detected by ground-based observers can be estimated. This methodology can be applied to any photometric band, if appropriate transformations from the Gaia bands are available. In particular, we present the expected sky brightness for V (Johnson), and visual photopic and scotopic passbands.
description: To be published in MNRAS. 15 pages; 13 figures. The model is available at http://gambons.fqa.ub.edu
Stochastic Gravitational Wave Background and Eccentric Stellar Compact Binaries
Creators: name: Zhao, Yuetong
name: Lu, Youjun
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Gravitational wave (GW) radiations from numerous cosmic stellar-compact-binaries form a stochastic GW background (GWB), which is expected to be detected by ground and space GW detectors in future. Theoretical predictions of this GWB were mostly obtained by assuming either circular binaries and/or a specific channel for binary formation, which may have some uncertainties. In this paper, we estimate the GWB and its spectrum by using simple models for the formation of both stellar mass binary black holes (sBBHs) and binary neutron stars (BNSs). We consider that the dynamically originated sBBHs have relatively larger masses and higher eccentricities compared with those from field binary stars and its possible effect on the GWB spectrum. We find that the GWB spectrum may have a turnover in the low-frequency (Laser Interferometer Space Antenna; LISA) band and may be better described by a broken double power-law than a single power-law with the unique index $2/3$, and the low-frequency slope depends on the significance of the dynamically originated sBBHs with high eccentricities. We further generate mock samples of sBBHs and BNSs, and simulate the mock GWB strain in the time domain. We find that GWB can be detected with signal-to-noise ratio (SNR) $\gtrsim274/255/21$ by LISA/Taiji/TianQin over $5$-years' observation and $\gtrsim3$ by LIGO over $2$-years' observation. Furthermore, we estimate that the number of sBBHs that may be detected by LISA/Taiji/TianQin individually with SNR $\gtrsim8$ is $\sim5$-$221$/$7$-$365$/$3$-$223$ over $5$-years' observation.
description: 18 pages, 9 figures, accepted for publication in MNRAS
"Old Techniques for New Times": the RMaCzek package for producing Czekanowski's Diagrams
Creators: name: Bartoszek, Krzysztof
name: Västerlund, Albin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applications (stat.AP)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences
subject: 62-09, 62H30

description: Inspired by the MaCzek Visual Basic program we provide an R package, RMaCzek, that produces Czekanowski's diagram. Our package permits any seriation and distance method the user provides. In this paper we focus on the OLO and QAP_2SUM methods from the seriation package. We illustrate the possibilities of our package with three anthropological studies, one socio-economical one and a phylogenetically motivated simulation study.
The effect of micromachined surfaces on osteogenesis in vitro
Creators: name: Ratkay, Julia
Publisher: name: University of British Columbia
Year: 2009

description: Since the use of osseointegrated implants became common in both dentistry and orthopaedics, researchers have been investigating the problem of improving stabilization of the implant. It is widely accepted that the solution lies in improving the biomaterial interface. Implants with various surface designs and chemical compositions have been investigated at the experimental and clinical levels. Micromachining, a technique widely used i n microelectronics, has the capability to produce surface topographies with precise dimensions and high reproducibility. This allows the testing of the effect of implant surface topography on osseointegration in controlled experiments. These experiments aimed to test the ability of micromachined surfaces to promote bone formation in vitro. A recently developed osteogenic culture was optimized and characterized, in which rat calvarial cells were cultured in the presence of ascorbic acid and organic phosphate in the medium. This method provided a reliable model of reproducible mineralized tissue formation. Histochemical methods, TEM, S EM and EDX techniques demonstrated that the mineralized tissue formed after two weeks culturing had an elevated alkalinephosphatase activity, was rich in collagen, and had a structure, similar to the original calvarial bone. The ability of micromachined surfaces to facilitate osteogenesis was studied when these osteogenic cultures were grown on grooved, pitted, and smooth micromachined surfaces. The developed mineralized tissue was stained utilizing von Kossa's technique and its amount quantified with an UltroScan X L Laser Densitometer. The area, shape and orientation of the mineralized bone colonies were measured with a Videoplan Image Analysis System (Zeiss). There was a statistically significant difference of bone formation between the micromachined and smooth surfaces. Bone-like tissue formed to the greatest extent on pitted surfaces, and to a lesser extent on grooves, but few bone nodules were found on the smooth control surfaces. The colonies on the grooved surfaces were elongated and followed the direction of the grooves, while those on the smooth and pitted surfaces were rounder and randomly oriented. The results indicate that bone-like tissue formation is influenced by the substratum surface topography and micromachining may be useful i n determining the ideal surface topography for promoting bone formation on titanium surfaces.
Stochastic solution of a nonlinear fractional differential equation
Creators: name: Cipriano, F.
name: Ouerdiane, H.
name: Mendes, R. Vilela
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 26A33, 60G20, 60H99, 35K55

description: A stochastic solution is constructed for a fractional generalization of the KPP (Kolmogorov, Petrovskii, Piskunov) equation. The solution uses a fractional generalization of the branching exponential process and propagation processes which are spectral integrals of Levy processes
description: 10 pages
Testing the left-handedness of the b \to c transition
Creators: name: Dassinger, B. M.
name: Feger, R.
name: Mannel, T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyse the spin structure of inclusive semileptonic b \to c transitions and the effects of non-standard model couplings on the rates and the spectra. The calculation includes the {\cal O} (α_s) corrections as well as the leading non-perturbative ones.
description: 15 pages, 3 figures
Εκπαίδευση για την ιδιότητα του πολίτη στο πολυπολιτισμικό ελληνικό νηπιαγωγείο": Μια έρευνα δράση.
Creators: name: Τσιαμή, Μαριάνθη-Βαρβάρα
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Εκπαίδευση για την ιδιότητα του πολίτη, δημοκρατία και κοινωνική
δικαιοσύνη
Προσέγγιση της κοινωνικής αναδόμησης για την ανάληψη δράσης
Μετασχηματιστική παιδαγωγική
Citizenship education, democracy and social justice
Multicultural education and social reconstruction
Critical pedagogy

description: Σήμερα πορευόμαστε προς μια εκπαίδευση που αναγνωρίζει τη μοναδικότητα και την ιδιαιτερότητα του κάθε παιδιού, δείχνει απόλυτο σεβασμό στο είναι του, στις εμπειρίες του, στη γλώσσα του και στον πολιτισμό του. Η εκπαίδευση κρίνεται απαραίτητο να του προσφέρει τη δυνατότητα να κατακτήσει τη μάθηση και να αναπτύξει τις ικανότητές του μέσα σε ένα δημοκρατικό κλίμα ενδιαφέροντος, ισοτιμίας, ενσυναίσθησης, αλληλεπίδρασης, δημιουργικότητας και κριτικής ικανότητας, έτσι ώστε, γνωρίζοντας τον εαυτό του, τους άλλους και τον κόσμο, να μετασχηματίζεται συνεχώς γνωστικά, προσωπικά, ηθικά και κοινωνικά, και να καταστεί ικανό να αναλάβει τις ευθύνες του και να δράσει ώστε να συντελέσει στο μετασχηματισμό της κοινωνίας του. Η εκπαίδευση για την ιδιότητα του πολίτη θα βοηθήσει τα παιδιά να δημιουργήσουν ισχυρές ταυτότητες σε σχέση με την κοινωνία στην οποία ζουν, τα έθνη στα οποία ανήκουν καθώς και με την παγκόσμια κοινότητα και θα τους βοηθήσει να γίνουν υπεύθυνοι πολίτες που θα προσπαθήσουν να αλλάξουν τη ζωή τους και τη ζωή των άλλων προς το καλύτερο. Η παρούσα εργασία αποτελεί μια έρευνα δράσης σχετικά με το αν και κατά πόσο, μέσα από ένα σύνολο καλά οργανωμένων δραστηριοτήτων, μπορεί να επιτευχθεί η εκπαίδευση για την ιδιότητα του πολίτη σε παιδιά προσχολικής ηλικίας που φοιτούν στο Νηπιαγωγείο.
description: Nowadays what is needed is an education that recognizes the uniqueness and individuality of each child, showing respect for their being, their experience, their language and culture. It is essential that every child has the opportunity to learn and develop skills as a member of a democratic community that promotes interest, equality, empathy, interaction, creativity and critical thinking so that, they become responsible citizens by knowing themselves, the other people and the world, and through a constant cognitive, personal, moral and social transformation be able to contribute to the transformation of their society. The citizenship education should help children to develop clarified identifications with their communities, nation states and the global community and could also help them become responsible citizens that will try to improve their own lives and the lives of other people. This study is an action research on whether and how, through a set of well organized activities, preschool children can achieve citizenship education.