cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Rosa dumalis subsp. teydensis Weller & H. Reichert
Creators: name: Weller, André-Alexander
name: Reichert, Hans
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Rosales
Rosaceae
Rosa
Rosa dumalis
Rosa dumalis ssp. teydensis weller & h. reichert

description: Rosa dumalis ssp. teydensis Weller & H. Reichert
 Holotype:— SPAIN. Canary Islands: Tenerife, Cañadas del Teide, Roque del Rosal, Cañada de la Mareta, 2.100 m a.s.l., 18 June 2019, leg. A.- A. Weller, det. H. Reichert, TFC 53.627 (FIGURE 1). Flowering branch (26 cm) of shrub (ca. 2.5 m), with a few, sickle-shaped prickles (removed for preparation purposes); leaves leathery, in living plant blue-green above, gray-green below, oval-shaped, 26–52 × to 50–86 mm; leaflets seven, almost sessile to very shortly stalked (c. 1 mm), partly overlapping, 6.5–29 x 4.5–20 mm, ovoid, towards inflorescence sometimes acute; margins crenate-serrate (uni- to multiserrate); teeth with sessile to shortly stalked glands; leaflets glandular below along midribs; rachis usually below lowest pair of leaflets with short hairs (0.1–0.2 mm long, occasionally several times longer), and straight to sickle-shaped prickles of 0.3–0.7 mm (1–10; mostly> 4, along rachis); stipules in upper parts of flowering branches 16–21 × 10–12.5 mm (lower stipules smaller), apically acute, with glandular margins; (one) flower pale pinkish, in living plant approx. 28 mm in diameter; petals obovoid, approx. 14 × 11 mm, terminally emarginate; orifice (one measured) 1.4 mm, pedicels c. 7.0– 7.5 mm long, hairy; sepals up to 13 mm long, glandular along margins, tomentosevillous inside, partly outside, with glabrous, glandular appendages of up to two third of length of sepals; hips dark brown to black brown, 5.2–6.0 × 4.5–5.5 mm.
Additional specimens:— SPAIN. Canary Islands: Tenerife, Cañadas del Teide:
 Isotype: Roque del Rosal, Cañada de la Mareta, 2.100 m a.s.l., 18 June 2019, leg. A.- A. Weller, WE-19618- Rd; Las Cañadas, Montaña Diego Hernández, leg. E. R. Sventenius, 29 April 1944, ORT 16209; Las Cañadas, ad pedem montis Guajara, Hab. in rupibus apricis, 2.400 m, leg. E. R. Sventenius, 29 April 1944, ORT 2681; Topo de la Grieta, 21 May 1973, leg. W. Wildpret et al., TFC 3879; Topo de la Grieta, presentado en la zona umbrosa, 31 May 1973, leg. W. Wildpret et al., TFC 21.912; Roque del Agua, Cañada de la Grieta, 2.080 m, 20 June 2019, foot of rock, leg. A.- A. Weller (det. H. Reichert), WE-19620- Rd .
description: Published as part of Weller, André-Alexander & Reichert, Hans, 2023, On the identity of the Teyde dog-rose (Rosaceae): evidence for a new endemic taxon from Tenerife, Spain, pp. 261-274 in Phytotaxa 578 (3) on pages 263-265, DOI: 10.11646/phytotaxa.578.3.4, http://zenodo.org/record/7523164
Variability of research performance across disciplines within universities in non-competitive higher education systems
Creators: name: Abramo, Giovanni
name: D'Angelo, Ciriaco Andrea
name: Di Costa, Flavia
Publisher: name: arXiv
Year: 2018
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: Many nations are adopting higher education strategies that emphasize the development of elite universities able to compete at the international level in the attraction of skills and resources. Elite universities pursue excellence in all their disciplines and fields of action. The impression is that this does not occur in "non-competitive" education systems, and that instead, within single universities excellent disciplines will coexist with mediocre ones. To test this, the authors measure research productivity in the hard sciences for all Italian universities over the period 2004-2008 at the levels of the institution, their individual disciplines and fields within them. The results show that the distribution of excellent disciplines is not concentrated in a few universities: top universities show disciplines and fields that are often mediocre, while generally mediocre universities will often include top disciplines.
Industry 4.0 technological trajectories and traditional manufacturing regions: the role of knowledge workers
Creators: name: Corò, Giancarlo
name: Plechero, Monica
name: Rullani, Francesco
name: Volpe, Mario
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Science Policy

description: The technological trajectory of a region depends on the local repository of competences and knowledge, and their evolution over time. Using the case of a region with Marshallian features, we explore the Industry 4.0 potential for regional transformation showing how the employment ratios of synthetic and analytical knowledge workers of local firms evolve in relation to the adoption of a set of digital technologies. Results show that technological change in this type of region exhibits strong path dependence and goes hand in hand mainly with an increase in the employment ratio of synthetic knowledge workers.
The construction of multipermutation solutions of the Yang-Baxter equation of level 2
Creators: name: Jedlička, Přemysl
name: Pilitowska, Agata
name: Zamojska-Dzienio, Anna
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: Primary: 16T25. Secondary: 20N02, 20B25

description: We study involutive set-theoretic solutions of the Yang-Baxter equation of multipermutation level 2. These solutions happen to fall into two classes -- distributive ones and non-distributive ones. The distributive ones can be effectively constructed using a set of abelian groups and a matrix of constants. Using this construction, we enumerate all distributive involutive solutions up to size 14. The non-distributive solutions can be also easily constructed, using a distributive solution and a permutation.
description: 25 pages; Section 6 modified and Section 9 deleted - now we focus only on the construction
The Concurrent Track Evolution Algorithm: Extension for Track Finding in the Inhomogeneous Magnetic Field of the HERA-B Spectrometer
Creators: name: Mankel, Rainer
name: Spiridonov, Alexander
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The Concurrent Track Evolution method, which was introduced in a previous paper (DESY 97-054), has been further explored by applying it to the propagation of track candidates into an inhomogeneous magnetic field volume equipped with tracking detectors, as is typical for forward B spectrometers like HERA-B or LHCb. Compared to the field-free case, the method was extended to three-dimensional propagation, with special measures necessary to achieve fast transport in the presence of a fast-varying magnetic field. The performance of the method is tested on HERA-B Monte Carlo events with full detector simulation and a realistic spectrometer geometry.
description: 26 pages (Latex), 11 figures (Postscript)
Whole-Body MPC for a Dynamically Stable Mobile Manipulator
Creators: name: Minniti, Maria Vittoria
name: Farshidian, Farbod
name: Grandia, Ruben
name: Hutter, Marco
Publisher: name: arXiv
Year: 2019
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Autonomous mobile manipulation offers a dual advantage of mobility provided by a mobile platform and dexterity afforded by the manipulator. In this paper, we present a whole-body optimal control framework to jointly solve the problems of manipulation, balancing and interaction as one optimization problem for an inherently unstable robot. The optimization is performed using a Model Predictive Control (MPC) approach; the optimal control problem is transcribed at the end-effector space, treating the position and orientation tasks in the MPC planner, and skillfully planning for end-effector contact forces. The proposed formulation evaluates how the control decisions aimed at end-effector tracking and environment interaction will affect the balance of the system in the future. We showcase the advantages of the proposed MPC approach on the example of a ball-balancing robot with a robotic manipulator and validate our controller in hardware experiments for tasks such as end-effector pose tracking and door opening.
Domain wall quarks and kaon weak matrix elements
Creators: name: Blum, T.
name: Soni, A.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present lattice calculations of kaon matrix elements with domain wall fermions. Using lattices with beta=5.85, 6.0, and 6.3, we estimate B_K(approx 2 GeV)=0.628(47) in quenched QCD which is consistent with previous calculations. At beta=6.0 and 5.85 we find the ratio f_K/m_rho in agreement with the experimental value, within errors. These results support expectations that O(a) errors are exponentially suppressed in low energy (E<< a^{-1}) observables, and indicate that domain wall fermions have good scaling behavior at relatively strong couplings. We also demonstrate that the axial current numerically satisfies the lattice analog of the usual continuum axial Ward identity.
description: Published version. Minor changes from original. 13 pages including 4 figures
Statistical Physics of Vehicular Traffic and Some Related Systems
Creators: name: Chowdhury, Debashish
name: Santen, Ludger
name: Schadschneider, Andreas
Publisher: name: arXiv
Year: 2000
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In the so-called "microscopic" models of vehicular traffic, attention is paid explicitly to each individual vehicle each of which is represented by a "particle"; the nature of the "interactions" among these particles is determined by the way the vehicles influence each others' movement. Therefore, vehicular traffic, modeled as a system of interacting "particles" driven far from equilibrium, offers the possibility to study various fundamental aspects of truly nonequilibrium systems which are of current interest in statistical physics. Analytical as well as numerical techniques of statistical physics are being used to study these models to understand rich variety of physical phenomena exhibited by vehicular traffic. Some of these phenomena, observed in vehicular traffic under different circumstances, include transitions from one dynamical phase to another, criticality and self-organized criticality, metastability and hysteresis, phase-segregation, etc. In this critical review, written from the perspective of statistical physics, we explain the guiding principles behind all the main theoretical approaches. But we present detailed discussions on the results obtained mainly from the so-called "particle-hopping" models, particularly emphasizing those which have been formulated in recent years using the language of cellular automata.
description: 170 pages, Latex, figures included
Quasi-equilibrium interpretation of aging dynamics
Creators: name: Franz, S.
name: Virasoro, M. A.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We develop an interpretation of the off-equilibrium dynamical solution of mean-field glassy models in terms of quasi-equilibrium concepts. We show that the relaxation of the "thermoremanent magnetization" follows a generalized version of the Onsager regression postulate of induced fluctuations. We then find the rationale for the equality between the fluctuation-dissipation ratio and the rate of growth of the configurational entropy close to the asymptotic state, found empirically in mean-field solutions.
description: 11 pages. Completely revised version
Fruit and vegetable consumption and health outcomes: an umbrella review of observational studies
Creators: name: Angelino, Donato
name: Godos, Justyna
name: Ghelfi, Francesca
name: Tieri, Maria
name: Titta, Lucilla
name: Lafranconi, Alessandra
name: Marventano, Stefano
name: Alonzo, Elena
name: Gambera, Angelo
name: Sciacca, Salvatore
name: Buscemi, Silvio
name: Sumantra Ray
name: Galvano, Fabio
name: Rio, Daniele Del
name: Grosso, Giuseppe
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: The aim of this study was to provide a comprehensive evaluation of current evidence on fruit and vegetable consumption and health outcomes. A systematic search for quantitative syntheses was performed. Several criteria, including study design, dose–response relationship, heterogeneity and agreement of results over time, and identification of potential confounding factors, were used to assess the level of evidence. The strongest (probable) evidence was found for cardiovascular disease protection; possible evidence for decreased risk of colon cancer, depression and pancreatic diseases was found for fruit intake; and colon and rectal cancer, hip fracture, stroke, depression and pancreatic diseases was found for vegetable intake. Suggestive and rather limited associations with other outcomes have been found. Evidence of potential confounding by sex and geographical localisation has been reported. Despite findings are consistent enough for hypothesising causation (at least for cardiovascular-related outcomes), further studies are needed to clarify the role of potential confounding factors.
Strange Form Factors of Baryons
Creators: name: Hong, Soon-Tae
name: Park, Byung-Yoon
name: Min, Dong-Pil
Publisher: name: arXiv
Year: 1997
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The strange magnetic form factor of proton is calculated in a model independent way to confirm the recent experimental result of the SAMPLE Collaboration. We consider a set of six inertia parameters to realize the magnetic moments of the baryon octet. We show that the strange form factor of proton is a positive quantity, i.e. +0.37 n.m.. Its positiveness is analyzed in terms of the vacuum fluctuation coupled to the vector current along the strangeness direction.
description: 10 pages, 1 figure, Latex, revised version
Are the authors of highly cited articles also the most productive ones?
Creators: name: Abramo, Giovanni
name: Cicero, Tindaro
name: D'Angelo, Ciriaco Andrea
Publisher: name: arXiv
Year: 2018
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: Ever more frequently, governments have decided to implement policy measures intended to foster and reward excellence in scientific research. This is in fact the intended purpose of national research assessment exercises. These are typically based on the analysis of the quality of the best research products; however a different approach to analysis and intervention is based on the measure of productivity of the individual scientists, meaning the overall impact of their entire scientific production over the period under observation. This work analyzes the convergence of the two approaches, asking if and to what measure the most productive scientists achieve highly-cited articles; or vice versa, what share of highly-cited articles is achieved by scientists that are "non-top" for productivity. To do this we use bibliometric indicators, applied to the 2004-2008 publications authored by academics of Italian universities and indexed in the Web of Science.
Synthesis, and characterization folate-conjugated photocleavable poly(4-substituted-ε-caprolactone) polymers for drug delivery
Creators: name: Fang, Jia-You
name: Yin-Ku Lin
name: Shiu-Wei Wang
name: Ren-Shen Lee
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Photo-cleavable polymers containing 5-hydroxy-2-nitrobenzyl alcohol (ONB) junction point between the target molecule of folic acid (FA) and the hydrophobic poly(4-substituted-ɛ-caprolactone) (PXCLn) chain were synthesized. FA –terminated ONB-PXCLn polymers formed micelles with critical micelle concentration (CMC) 1.2 – 64.3 mg L−1. Fluorescence emission spectroscopy indicated the release of Nile red encapsulated FA-ONB-PXCLn micelles in response to irradiation. Light-triggered bursts released were observed for drug-loaded FA-ONB-PXCLn micelles. The nanoparticles exhibited nonsignificant toxicity at concentrations up to 300 µg mL−1. Flow cytometry revealed that the uptake of folate-targeted doxorubicin (DOX) -encapsulated micelles by HeLa cells was faster than that of free DOX.
Histopathological characterization of Penaeus vannamei experimentally infected with Vibrio parahaemolyticus causing acute hepatopancreatic necrosis disease
Creators: name: Gu, Y
name: Ni, P
name: Wang, M-Q
Publisher: name: Invertebrate Survival Journal
Year: 2025

description: Vibrio parahaemolyticus carrying the pirA and pirB gene is one of the major pathogens causing acute hepatopancreatic necrosis disease (AHPND) in shrimp. It primarily targets the hepatopancreas as target tissue, causing pathological damage by releasing binary toxins during intestinal colonization. In this study, Penaeus vannamei were infected with V. parahaemolyticus causing acute hepatopancreatic necrosis disease (VpAHPND), and tissue samples were collected from surviving, moribund, and dead shrimps, including gills, heart, stomach, hepatopancreas, muscle, midgut, hindgut, and pleopod. The relationship between bacterial loads and pathological damage in the infected shrimp tissues was identified using real-time PCR (qPCR) combined with histopathology. The qPCR results showed that V. parahaemolyticus was detectable in all tissue samples, with the highest positivity rate in the hepatopancreas at 94.44%, and the lowest in muscles at 44.44%. The hepatopancreas is highly sensitive tissues for AHPND detection, sequentially followed by pleopod and gill. Histopathological analysis revealed that VpAHPND infection caused varying degrees of damage to the morphology of tissues such as shrimp gills, stomach, hepatopancreas, midgut, hindgut, and pleopods. By analyzing the pathological characteristics of infected tissues with different bacterial load levels, a high correlation was found between the load of V. parahaemolyticus in each tissue and the degree of infection. This study can help to understand the pathogenic mechanism of Vibrio parahaemolyticus infection in shrimp, assess the degree of infection, and evaluate the progress of the disease.
description: Invertebrate Survival Journal, Vol. 21 No. 1 (2024)
AB interface in superfluid 3He and Casimir effect
Creators: name: Volovik, G. E.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The friction force on the moving interface between two different vacuum states of superfluid 3He is considered at low temperature. Since the dominating mechanism of the friction is the Andreev reflection of the massless "relativistic" fermions, which live on the A-phase side of the interface, the results are similar to that for the perfectly reflecting mirror moving in the quantum vacuum.
description: 10 pages, LaTeX file, no figures, submitted to JETP Letters
Matrix product solution to the reflection equation associated with a coideal subalgebra of $U_q(A^{(1)}_{n-1})$
Creators: name: Kuniba, Atsuo
name: Okado, Masato
name: Yoneyama, Akihito
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 17B37, 17B80

description: We present a new solution to the reflection equation associated with a coideal subalgebra of $U_q(A^{(1)}_{n-1})$ in the symmetric tensor representations and their dual. Elements of the $K$ matrix are expressed by a matrix product formula involving terminating $q$-hypergeometric series in $q$-boson generators. At $q=0$, our result reproduces a known set-theoretical solution to the reflection equation connected to the crystal base theory.
description: 11 pages, v5: minor corrections
Independent and combined effects of obesity and traumatic joint injury to the structure and composition of rat knee cartilage
Creators: name: Karjalainen, Kalle
name: Tanska, Petri
name: Collins, Kelsey H.
name: Herzog, Walter
name: Korhonen, Rami K.
name: Moo, Eng Kuan
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Physiology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine

description: Osteoarthritis (OA) is a multifactorial joint disease characterized by articular cartilage degradation. Risk factors for OA include joint trauma, obesity, and inflammation, each of which can affect joint health independently, but their interaction and the associated consequences of such interaction were largely unexplored. Here, we studied compositional and structural alterations in knee joint cartilages of Sprague-Dawley rats exposed to two OA risk factors: joint injury and diet-induced obesity. Joint injury was imposed by surgical transection of anterior cruciate ligaments (ACLx), and obesity was induced by a high fat/high sucrose diet. Depth-dependent proteoglycan (PG) content and collagen structural network of cartilage were measured from histological sections collected previously in Collins et al.. (2015). We found that ACLx primarily affected the superficial cartilages. Compositionally, ACLx led to reduced PG content in lean animals, but increased PG content in obese rats. Structurally, ACLx caused disorganization of collagenous network in both lean and obese animals through increased collagen orientation in the superficial tissues and a change in the degree of fibrous alignment. However, the cartilage degradation attributed to joint injury and obesity was not necessarily additive when the two risk factors were present simultaneously, particularly for PG content and collagen orientation in the superficial tissues. Interestingly, sham surgeries caused a through-thickness disorganization of collagen network in lean and obese animals. We conclude that the interactions of multiple OA risk factors are complex and their combined effects cannot be understood by superposition principle. Further research is required to elucidate the interactive mechanism between OA subtypes.
Convolutional Neural Networks on the HEALPix sphere: a pixel-based algorithm and its application to CMB data analysis
Creators: name: Krachmalnicoff, Nicoletta
name: Tomasi, Maurizio
Publisher: name: arXiv
Year: 2019
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We describe a novel method for the application of Convolutional Neural Networks (CNNs) to fields defined on the sphere, using the HEALPix tessellation scheme. Specifically, We have developed a pixel-based approach to implement convolutional layers on the spherical surface, similarly to what is commonly done for CNNs in Euclidian space. The algorithm is fully integrable with existing libraries for NNs (e.g., PyTorch or TensorFlow). We present two applications: (i) recognition of handwritten digits projected on the sphere; (ii) estimation of cosmological parameter from Cosmic Microwave Background (CMB) simulated maps. We have built a simple NN architecture, consisting in four convolutional+pooling layers, and have used it for all the applications explored herein. For what concerns the handwritten digits, our CNN reaches an accuracy of about 95%, comparable with other existing spherical CNNs. For CMB applications, we have tested the CNN on the estimation of a "mock" parameter, defining the angular scale at which the power spectrum of a Gaussian field projected on the sphere peaks. We have estimated this parameter directly from maps, in several cases: temperature and polarization, presence of noise and partial sky coverage. In all the cases, the NN performances are comparable with those from standard spectrum-based bayesian methods. We demonstrate, for the first time, the capability of CNNs to extract information from polarization fields and to distinguish between E and B-modes. Lastly, we have applied our CNN to the estimation of the Thomson scattering optical depth at reionization (tau) from simulated CMB maps. Even without any specific optimization of the NN architecture, we reach an accuracy comparable with standard bayesian methods. This work represents a first step towards the exploitation of NNs in CMB parameter estimation and demonstrates the feasibility of our approach.
description: Accepted for publication on A&A
Search for New Particles Decaying to b bbar in p pbar Collisions at sqrt{s}=1.8 TeV
Creators: name: Abe, F.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We have used 87 pb^-1 of data collected with the Collider Detector at Fermilab to search for new particles decaying to b bbar. We present model-independent upper limits on the cross section for narrow resonances which excludes the color-octet technirho in the mass interval 350 < M < 440 GeV/c^2. In addition, we exclude topgluons, predicted in models of topcolor-assisted technicolor, of width Gamma = 0.3 M in the mass range 280 < M < 670 GeV/c^2, of width Gamma = 0.5 M in the mass range 340 < M < 640 GeV/c^2, and of width Gamma = 0.7 M in the mass range 375 < M < 560 GeV/c^2.
description: 17 pages in a LaTex generated postscript file, with one table and four figures. Resubmitted to Physical Review Letters. Minor clarifications were added to the text. The displayed normalization of the resonance models in Figure 2 was modified to correspond to our 95% CL upper limit on the cross section (instead of arbitrary normalization which was used previously). All results are identical to those in the previous submission
MPEC 2024-C194 : 2024 CR6
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 CR6

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
title: V2_DU_LettreB
Creators: name: Basnage de Beauval, Henri
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020

description: Ceci est la V2 du Dictionnaire universel, revu et corrigé en 1701 par Basnage de Beauval. Cette version a été obtenue avec GROBID dictionaries, après adaptation du système et renentraînement en juillet 2020.
The suitability of h and g indexes for measuring the research performance of institutions. Scientometrics, 97(3), 555-570
Creators: name: Abramo, Giovanni
name: D'Angelo, Ciriaco Andrea
name: Viel, Fulvio
Publisher: name: arXiv
Year: 2018
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: It is becoming ever more common to use bibliometric indicators to evaluate the performance of research institutions, however there is often a failure to recognize the limits and drawbacks of such indicators. Since performance measurement is aimed at supporting critical decisions by research administrators and policy makers, it is essential to carry out empirical testing of the robustness of the indicators used. In this work we examine the accuracy of the popular "h" and "g" indexes for measuring university research performance by comparing the ranking lists derived from their application to the ranking list from a third indicator that better meets the requirements for robust and reliable assessment of institutional productivity. The test population is all Italian universities in the hard sciences, observed over the period 2001-2005. The analysis quantifies the correlations between the three university rankings (by discipline) and the shifts that occur under changing indicators, to measure the distortion inherent in use of the h and g indexes and their comparative accuracy for assessing institutions.
Broken Generalized Kohn Theorem in Harmonic Dot Lattices due to Coulomb Interaction between the Dots: Exact solution of the Schrödinger equation in the dipole approximation
Creators: name: Taut, M.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The Generalized Kohn Theorem in arrays of parabolic quantum dots with Coulomb interaction between the dots is violated, if there are different dot species involved. We solve the Schrödinger equation for cubic lattices with two different dots per unit cell: i) two different circular dots and ii) two elliptical dots, which are rotated by $90^o$ relative to each other. The interaction between the dots is considered in dipole approximation and long-- wavelength excitation spectra including FIR intensities are calculated. The energy spectrum of the first case can be expressed as a superposition of two noninteracting dots with an effective confinement frequency, which includes the effect of dot interaction. Only in the second case a splitting of degenerate absorption lines (versus magnetic field) occurs, which is a qualitative indication for interdot interaction. If the interaction becomes very strong and if all lattice sites (not necessarily confinement potentials) are equivalent, then the contribution of the dot interaction over-plays possible differences in the confinement potentials and the Kohn Theorem gradually re-entries, in the sense that one pair of excitation modes (pseudo Kohn modes) becomes independent of the interaction strength.
description: 11 pages including 10 figures
Impact of dietary lipoic acid supplementation on liver mitochondrial bioenergetics and oxidative status on normally fed Wistar rats
Creators: name: M. P. Valdecantos
name: P. Pérez-Matute
name: P. Prieto-Hontoria
name: M. J. Moreno-Aliaga
name: J. A. Martínez
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Cancer

description: The aim of this study was to examine the effects of α-lipoic acid (α-LA) on liver mitochondrial bioenergetics and oxidative status for 8 weeks in normal-healthy animals. A pair-fed group was included to differentiate between α-LA direct effects and those changes due to reduced food intake. α-LA decreased body weight gain, liver weight and insulin levels with no differences compared to its pair-fed group. α-LA significantly reduced energy efficiency, the activity of the electron transport chain complexes and induced a lower efficiency of oxidative phosphorylation with reduced ATP production. α-LA supplementation directly decreased plasma triglycerides (TGs), free fatty acids and ketone bodies levels. A significant reduction in hepatic TG content was also observed. A significant up-regulation of Cpt1a, Acadl and Sirt3, all β-oxidation genes, along with a significant deacetylation of the forkhead transcription factor 3a (FOXO3A) was found in α-LA-treated animals. Thus, α-LA along with a standard chow diet has direct actions on lipid metabolism and liver by modulating mitochondrial function in normal-weight rats. These results should be taken into account when α-LA is administered or recommended to a healthy population.
Realistic Calculations of Correlated Incompressible Electronic States in GaAs--Al_{x}Ga_{1-x}As Heterostructures and Quantum Wells
Creators: name: Ortalano, M. W.
name: He, Song
name: Sarma, S. Das
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We perform an exact spherical geometry finite-size diagonalization calculation for the fractional quantum Hall ground state in three different experimentally relevant GaAs-Al_{x}Ga_{1-x}As systems: a wide parabolic quantum well, a narrow square quantum well, and a heterostructure. For each system we obtain the Coulomb pseudopotential parameters entering the exact diagonalization calculation by using the realistic subband wave function from a self-consistent electronic structure calculation within the local density approximation (LDA) for a range of electron densities. We compare our realistic LDA pseudopotential parameters with those from widely used simpler model approximations in order to estimate the accuracies of the latter. We also calculate the overlap between the exact numerical ground state and the analytical Laughlin state as well as the excitation gap as a function of density. For the three physical systems we consider the calculated overlap is found to be large in the experimental electron density range. We compare our calculated excitation gap energy to the experimentally obtained activated transport energy gaps after subtracting out the effect of level broadening due to collisions. The agreement between our calculated excitation gaps and the experimental measurements is excellent.
description: 24 pages, RevTex, 20 figures
InversionNet: A Real-Time and Accurate Full Waveform Inversion with CNNs and continuous CRFs
Creators: name: Wu, Yue
name: Lin, Youzuo
Publisher: name: arXiv
Year: 2018
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Full-waveform inversion problems are usually formulated as optimization problems, where the forward-wave propagation operator $f$ maps the subsurface velocity structures to seismic signals. The existing computational methods for solving full-waveform inversion are not only computationally expensive, but also yields low-resolution results because of the ill-posedness and cycle skipping issues of full-waveform inversion. To resolve those issues, we employ machine-learning techniques to solve the full-waveform inversion. Specifically, we focus on applying the convolutional neural network~(CNN) to directly derive the inversion operator $f^{-1}$ so that the velocity structure can be obtained without knowing the forward operator $f$. We build a convolutional neural network with an encoder-decoder structure to model the correspondence from seismic data to subsurface velocity structures. Furthermore, we employ the conditional random field~(CRF) on top of the CNN to generate structural predictions by modeling the interactions between different locations on the velocity model. Our numerical examples using synthetic seismic reflection data show that the propose CNN-CRF model significantly improve the accuracy of the velocity inversion while the computational time is reduced.
Short-term high-fat meal intake alters the expression of circadian clock-, inflammation-, and oxidative stress-related genes in human skeletal muscle
Creators: name: Budai, Zsófia
name: Balogh, László
name: Sarang, Zsolt
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Dietary food, depending on timing, amount and composition can influence gene expression in various tissues. Here, we investigated the effect of high-fat meal diets of different compositions on the gene expression pattern of human skeletal muscle. Gene expression data of skeletal muscle samples from human volunteers prior and 4 h after the consumption of high lipid-containing meal consisting of either saturated-, monounsaturated- or polyunsaturated fatty acids were downloaded from the public repository. List of 843 differently expressed genes (DEGs) was generated. Functional analysis revealed that circadian rhythm-, inflammation- and oxidative stress-related genes are highly overrepresented among the DEGs. The magnitude of gene expression changes significantly increases with the saturation level of the dietary fatty acids and the majority of the DEGs are upregulated. We propose that, by altering circadian clock gene expression and inducing inflammation and oxidative stress, high lipid intake can contribute to muscle function decay in the long run.
Oscillation modes of ultralight BEC dark matter cores
Creators: name: Guzman, F. S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Structure formation simulations of ultralight bosonic dark matter, ruled by the Gross-Pitaevskii-Poisson (GPP) system of equations, show that dark matter clumps to form structures with density profiles consisting of a core surrounded by a power-law distribution. The core has a density profile similar to that of spherically symmetric equilibrium configurations of the GPP system. These configurations have been shown to be stable under a variety of perturbations and to have attractor properties. It is interesting to know the dominant frequencies of oscillation of these configurations. One reason is that in galaxies the effects of perturbations can trigger observable effects for specific frequency modes. Another reason is that during the process of structure formation, the oscillation modes can help to characterize a core. Based on these motivations, in this manuscript we present a systematic numerical analysis of the reaction of equilibrium configurations to various axi-symmetric perturbations with modes $l=0,1,2,3,4$. We then calculate the first few oscillation frequencies of equilibrium configurations for each mode.
description: 6 pages, 22 eps figures. Accepted for publication in Phys. Rev. D
Ground state of an $S=1/2$ distorted diamond chain - model of $\rm Cu_3 Cl_6 (H_2 O)_2 \cdot 2H_8 C_4 SO_2$
Creators: name: Okamoto, Kiyomi
name: Tonegawa, Takashi
name: Takahashi, Yutaka
name: Kaburagi, Makoto
Publisher: name: arXiv
Year: 1999
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the ground state of the model Hamiltonian of the trimerized $S=1/2$ quantum Heisenberg chain $\rm Cu_3 Cl_6 (H_2 O)_2 \cdot 2H_8 C_4 SO_2$ in which the non-magnetic ground state is observed recently. This model consists of stacked trimers and has three kinds of coupling constants between spins; the intra-trimer coupling constant $J_1$ and the inter-trimer coupling constants $J_2$ and $J_3$. All of these constants are assumed to be antiferromagnetic. By use of the analytical method and physical considerations, we show that there are three phases on the $\tilde J_2 - \tilde J_3$ plane ($\tilde J_2 \equiv J_2/J_1$, $\tilde J_3 \equiv J_3/J_1$), the dimer phase, the spin fluid phase and the ferrimagnetic phase. The dimer phase is caused by the frustration effect. In the dimer phase, there exists the excitation gap between the two-fold degenerate ground state and the first excited state, which explains the non-magnetic ground state observed in $\rm Cu_3 Cl_6 (H_2 O)_2 \cdot 2H_8 C_4 SO_2$. We also obtain the phase diagram on the $ \tilde J_2 - \tilde J_3$ plane from the numerical diagonalization data for finite systems by use of the Lanczos algorithm.
description: LaTeX2e, 15 pages, 21 eps figures, typos corrected, slightly detailed explanation added
A High Statistics Search for Electron-Neutrino --> Tau-Neutrino Oscillations
Creators: name: NuTeV Collaboration
name: Naples, D.
name: Romosan, A.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present new limits on nu_e to nu_tau and nu_e to nu_sterile oscillations by searching for electron neutrino dissappearance in the high-energy wide-band CCFR neutrino beam. Sensitivity to nu_tau appearance comes from tau decay modes in which a large fraction of the energy deposited is electromagnetic. The beam is composed primarily of muon neutrinos but this analysis uses the 2.3% electron neutrino component of the beam. Electron neutrino energies range from 30 to 600 GeV and flight lengths vary from 0.9 to 1.4 km. This limit improves the sensitivity of existing limits and obtains a lowest 90% confidence upper limit in sin**2(2*alpha) of 9.9 x 10**(-2) at delta-m**2 of 125 eV**2.
description: submitted to Phys. Rev. D. Rapid Comm
Analysis of fine-tuning measures in models with extended Higgs sectors
Creators: name: Boer, Daniël
name: Peeters, Ruud
name: Zeinstra, Sybrand
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the literature measures of fine-tuning have been discussed as one of the tools to assess the feasibility of beyond the Standard Model theories. In this paper we focus on two specific measures and investigate what kind of fine-tuning they actually quantify. First we apply both measures to the two Higgs doublet model, for which one can analyze the numerical results in terms of available analytic expressions. After drawing various conclusions about the fine-tuning measures, we investigate a particular left-right symmetric model for which it has been claimed that already at tree-level it suffers from a high amount of fine-tuning. We will reach a different conclusion, although left-right symmetric models may require a modest amount of fine-tuning if phenomenological constraints are imposed. Our analysis shows that the two considered measures can probe different aspects of fine-tuning and are both useful if applied and interpreted in the appropriate way.
description: 14 pages, 5 figures. Version to appear in Nuclear Physics B
AutoRegressive Planet Search: Methodology
Creators: name: Caceres, Gabriel A.
name: Feigelson, Eric D.
name: Babu, G. Jogesh
name: Bahamonde, Natalia
name: Christen, Alejandra
name: Bertin, Karine
name: Meza, Cristian
name: Curé, Michel
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The detection of periodic signals from transiting exoplanets is often impeded by extraneous aperiodic photometric variability, either intrinsic to the star or arising from the measurement process. Frequently, these variations are autocorrelated wherein later flux values are correlated with previous ones. In this work, we present the methodology of the Autoregessive Planet Search (ARPS) project which uses Autoregressive Integrated Moving Average (ARIMA) and related statistical models that treat a wide variety of stochastic processes, as well as nonstationarity, to improve detection of new planetary transits. Providing a time series is evenly spaced or can be placed on an evenly spaced grid with missing values, these low-dimensional parametric models can prove very effective. We introduce a planet-search algorithm to detect periodic transits in the residuals after the application of ARIMA models. Our matched-filter algorithm, the Transit Comb Filter (TCF), is closely related to the traditional Box-fitting Least Squares and provides an analogous periodogram. Finally, if a previously identified or simulated sample of planets is available, selected scalar features from different stages of the analysis -- the original light curves, ARIMA fits, TCF periodograms, and folded light curves -- can be collectively used with a multivariate classifier to identify promising candidates while efficiently rejecting false alarms. We use Random Forests for this task, in conjunction with Receiver Operating Characteristic (ROC) curves, to define discovery criteria for new, high fidelity planetary candidates. The ARPS methodology can be applied to both evenly spaced satellite light curves and densely cadenced ground-based photometric surveys.
description: 40 pages, 12 figures, to appear in the Astronomical Journal
Electromagnetic Form Factors of the Nucleon in an Improved Quark Model
Creators: name: Lu, D. H.
name: Thomas, A. W.
name: Williams, A. G.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Nucleon electromagnetic form factors are studied in the cloudy bag model (CBM) with center-of-mass and recoil corrections. This is the first presentation of a full set of nucleon form factors using the CBM. The center of mass motion is eliminated via several different momentum projection techniques and the results are compared. It is found that the shapes of these form factors are significantly improved with respect to the experimental data if the Lorentz contraction of the internal structure of the baryon is also appropriately taken into account.
description: revtex, 28 pages, 8 ps figs included