cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Outflows from active galactic nuclei: The BLR-NLR metallicity correlation
Creators: name: Du, Pu
name: Wang, Jian-Min
name: Hu, Chen
name: Valls-Gabaud, David
name: Baldwin, Jack A.
name: Ge, Jun-Qiang
name: Xue, Sui-Jian
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The metallicity of active galactic nuclei (AGNs), which can be measured by emission line ratios in their broad and narrow line regions (BLRs and NLRs), provides invaluable information about the physical connection between the different components of AGNs. From the archival databases of the International Ultraviolet Explorer, the Hubble Space Telescope and the Sloan Digital Sky Survey, we have assembled the largest sample available of AGNs which have adequate spectra in both the optical and ultraviolet bands to measure the narrow line ratio [N II]/Hα and also, in the same objects, the broad-line N V/C IV ratio. These permit the measurement of the metallicities in the NLRs and BLRs in the same objects. We find that neither the BLR nor the NLR metallicity correlate with black hole masses or Eddington ratios, but there is a strong correlation between NLR and BLR metallicities. This metallicity correlation implies that outflows from BLRs carry metal-rich gas to NLRs at characteristic radial distances of ~ 1.0 kiloparsec. This chemical connection provides evidence for a kinetic feedback of the outflows to their hosts. Metals transported into the NLR enhance the cooling of the ISM in this region, leading to local star formation after the AGNs turn to narrow line LINERs. This post-AGN star formation is predicted to be observable as an excess continuum emission from the host galaxies in the near infrared and ultraviolet, which needs to be further explored.
description: 19 pages, 13 figures, 3 tables. Accepted for publication at MNRAS
Periodic configurations of subshifts on groups
Creators: name: Fiorenzi, Francesca
Publisher: name: arXiv
Year: 2014
Subjects: subject: Formal Languages and Automata Theory (cs.FL)
subject: Dynamical Systems (math.DS)
subject: Group Theory (math.GR)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We study the density of periodic configurations for shift spaces defined on (the Cayley graph of) a finitely generated group. We prove that in the case of a full shift on a residually finite group and in that of a group shift space on an abelian group, the periodic configurations are dense. In the one-dimensional case we prove the density for irreducible sofic shifts. In connection with this we study the surjunctivity of cellular automata and local selfmappings. Some related decision problems for shift spaces of finite type are also investigated.
From Nuclear Structure to Nucleon Structure
Creators: name: Liu, Keh-Fei
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Similarities between nuclear structure study with many-body theory approach and nucleon structure calculations with lattice QCD are pointed out. We will give an example of how to obtain the connected sea partons from a combination of the experimental data, a global fit of parton distribution functions and a lattice calculation. We also present a complete calculation of the quark and glue decomposition of the proton momentum and angular momentum in the quenched approximation. It is found that the quark orbital angular momentum constitutes about 50% of the proton spin.
description: 16 pages, 11 figures, to be published in the Gerry Brown Memorial issue of Nucl. Phys. A (2014)
Operator convexity in Krein spaces
Creators: name: Moslehian, M. S.
name: Dehghani, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Functional Analysis (math.FA)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: Primary 47A63, Secondary 46C20, 47B50

description: We introduce the notion of Krein-operator convexity in the setting of Krein spaces. We present an indefinite version of the Jensen operator inequality on Krein spaces by showing that if $(\mathscr{H},J)$ is a Krein space, $\mathcal{U}$ is an open set which is symmetric with respect to the real axis such that $\mathcal{U}\cap\mathbb{R}$ consists of a segment of real axis and $f$ is a Krein-operator convex function on $\mathcal{U}$ with $f(0)=0$, then \begin{eqnarray*} f(C^{\sharp}AC)\leq^{J}C^{\sharp}f(A)C \end{eqnarray*} for all $J$-positive operators $A$ and all invertible $J$-contractions $C$ such that the spectra of $A$, $C^{\sharp}AC$ and $D^{\sharp}AD$ are contained in $\mathcal{U}$, where $D$ is a defect operator for $C^{\sharp}$.\\ We also show that in contrast with usual operator convex functions the converse of this implication is not true, in general.
description: 13 pages, to appear in New York J. Math
Supplementary document for Spectral properties of intermediate to high refractive index nanocubes - 6307515.pdf
Creators: name: Madeleine, Tristan
name: D'Alessandro, Giampaolo
name: Kaczmarek, Malgosia
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Supplement 1 contains the emission efficiency of generic NPA and the influence of the gap thickness
Tabulator Arbeitsblatt
Creators: name: Milleder
Publisher: name: Zenodo
Year: 2023
Subjects: subject: https://hoelzel.at/blog-fuer-officemanagement-angewandtes-informationsmanagement/

description: Ein Arbeitsblatt zum Thema Tabulator. Zielgruppe: 9. Schulstufe.
 Merkblatt und eine Übung in einem Dokument.
Exact N-envelope-soliton solutions of the Hirota equation
Creators: name: Shu, Jian-Jun
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We discuss some properties of the soliton equations of the type, partial derivative u/partial derivative t = S [u, (u) over bar], where S is a nonlinear operator differential in x, and present the additivity theorems of the class of the soliton equations. On using the theorems, we can construct a new soliton equation through two soliton equations with similar properties. Meanwhile, exact N-envelope-soliton solutions of the Hirota equation are derived through the trace method.
General treatment for dark energy thermodynamics
Creators: name: Silva, H. H. B.
name: Silva, R.
name: Gonçalves, R. S.
name: Zhu, Zong-Hong
name: Alcaniz, J. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work we discuss a general approach for the dark energy thermodynamics considering a varying equation of state (EoS) parameter of the type $ω(a)=ω_0+F(a)$ and taking into account the role of a non-zero chemical potential $μ$. We derive generalized expressions for the entropy density, chemical potential and dark energy temperature $T$ and use the positiveness of the entropy to impose thermodynamic bounds on the EoS parameter $ω(a)$. In particular, we find that a phantom-like behavior $ω(a)< -1$ is allowed only when the chemical potential assumes negative values ($μ<0$).
description: 4 pages. 1 figure, LaTeX
On the baryon acoustic oscillation amplitude as a probe of radiation density
Creators: name: Sutherland, Will
name: Mularczyk, Lukasz
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The baryon acoustic oscillation (BAO) feature in the distribution of galaxies has been widely studied as an excellent standard ruler for probing cosmic distances and expansion history, and hence dark energy. In contrast, the amplitude of the BAO feature has received relatively little study, mainly due to limited signal-to-noise, and complications due to galaxy biasing, effects of non-linear clustering and dependence on several cosmological parameters. As expected, the amplitude of the BAO feature is sensitive to the cosmic baryon fraction: for standard radiation content, the cosmic microwave background (CMB) acoustic peaks constrain this precisely and the BAO amplitude is largely a redundant cross-check. However, the CMB mainly constrains the redshift of matter-radiation equality, z_eq, and the baryon/photon ratio: if a non-standard radiation density N_eff is allowed, increasing N_eff while matching the CMB peaks leads to a reduced baryon fraction and a lower relative BAO amplitude. We construct an observable for the relative area of the BAO feature from the galaxy correlation function (Eq.~8); from linear-theory models, we find that this is mainly sensitive to N_eff and quite insensitive to other cosmological parameters. More detailed work from N-body simulations will be needed to constrain the effects of non-linearity and scale-dependent galaxy bias on this observable.
description: Latex, 10 pages, 3 figures. Accepted by MNRAS
Approximated center-of-mass motion for systems of interacting particles with space- and velocity-dependent friction and anharmonic potential
Creators: name: Olivetti, Alain
name: Labeyrie, Guillaume
name: Kaiser, Robin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We study the center-of-mass motion in systems of trapped interacting particles with space- and velocity-dependent friction and anharmonic traps. Our approach, based on a dynamical ansatz assuming a fixed density profile, allows us to obtain information at once for a wide range of binary interactions and interaction strengths, at linear and nonlinear levels. Our findings are first tested on different simple models by comparison with direct numerical simulations. Then, we apply the method to characterize the motion of the center of mass of a magneto-optical trap and its dependence on the number of trapped atoms. Our predictions are compared with experiments performed on a large Rb85 magneto-optical trap.
description: 9 pages, 8 figures
Charmonia formation in quark-gluon plasma
Creators: name: Song, Taesoo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Using the color evaporation model, the cross section for charmonium production in p+p collision is calculated in quark-gluon plasma. The threshold energy for open charms is given by the free energy potential from lattice calculations, the initial charm quark pairs by the Pythia simulations, and their time evolution by solving the Langevin equation. It is found that the threshold energy which decreases with temperature reduces the cross section while the invariant mass of charm pair which decreases by collisions enhances it. As a result, charmonia production is suppressed by $30$\sim$50\%$ while $J/ψ$ production is similar or enhanced compared to in vacuum.
description: 6 pages and 4 figures
Structural differences among pig genomes illustrate genetic uniqueness of breeds
Creators: name: Zorc, M
name: Ogorevc, J
name: Škrlep, M
name: Bozzi, R
name: Petig, M
name: Fontanesi, L
name: Óvilo, C
name: Radović, C
name: Kušec, G
name: Čandek-Potokar, M
name: Dovč, P
Publisher: name: Zenodo
Year: 2018

description: The availability of high-throughput whole-genome sequencing (WGS) data illustrating differences among different pig breed genomes opened a new area of genomic research focused on variation caused by single nucleotide polymorphisms (SNP), small scale variation and structural variants which may all contribute to phenotypic variation among pig breeds. In our study (performed within TREASURE project) we re-analysed WGS-based data sets from more than 20 breeds, including commercial and local breeds as well as some wild boar genomes, deposited in publicly available databases. This bioinformatics tool enables discovery of new SNPs, estimation of allele frequencies (genotyping by sequencing) at candidate loci and identification of structural variation in a wide range of pig breeds. The analysis underlined the relevance of structural differences at KIT and MC1R locus involved in colour pattern formation, as well as LEPR locus associated with fatness, fatty acid metabolism and intramuscular fat composition. This approach allows discovery of important genomic differences between commercial breeds and local breeds which are analysed in the frame of the TREASURE project. Extensive mining of publicly available genomic data can together with the newly generated genomic information from local breeds, significantly contribute to the detailed characterisation of animal genetic resources present in local pig breeds. Funded by European Union’s H2020 RIA program (grant agreement No. 634476).
Genetic structure of autochthonous and commercial pig breeds using a high-density SNP chip
Creators: name: Muñoz, M
name: García-Casco, JM
name: Fernández, AI
name: García, F
name: Geraci, C
name: Fontanesi, L
name: Čandek- Potokar, M
name: Óvilo, C
Publisher: name: Zenodo
Year: 2018

description: One of the main objectives in TREASURE project is the genetic characterisation of European autochthonous pig breeds through genetic and genomic tools. The aim of the current pilot study was to evaluate the usefulness of the GeneSeek Genomic Profiler porcine SNP chip to describe genetic diversity of five Mediterranean autochthonous and three commercial pig breeds. 44 animals from Iberian (12), Krskopolje (4), Casertana (5), Cinta Senese (5), Apulo Calabrese (5), Duroc (5), Large White (4) and Landrace (4) breeds were genotyped. All DNA samples were successfully genotyped (call rates ≥0.98). A total of 59,193 SNPs were used in the genetic analyses after QC filtering. Observed (Ho) and expected (He) heterozygosities, FIS statistic and genetic distances (DS and FST) were computed. The overall FST value was 0.15. Ho and Hs values per breed ranged from 0.25 to 0.36 (Ho) and from 0.26 to 0.40 (Hs). Calabrese and Duroc were the breeds with the highest (0.16) and lowest (-0.01) FIS values, respectively. DS and FST genetic distances were very similar. Duroc and Large-White were the closest breeds, since DS and FST were 0.09 and 0.19, respectively and Landrace and Duroc the furthest ones, being DS and FST values equal to 0.22 and 0.34. Distribution of minor allele  frequencies (MAF) showed that Iberian is the breed with the highest number of monomorphic SNPs (25.3%) and Landrace and Krskopolje have more alleles at intermediate frequencies. These results provide insights on the genetic diversity and relationships among the investigated breeds. This study will be enlarged to characterize the structure of European autochthonous pig populations using the same SNP chip. Funded by European Union’s H2020 RIA program (grant agreement no. 634476).
Determination of the effective transverse coherence of the neutron wave packet as employed in reflectivity investigations of condensed matter structures Part I: Measurements
Creators: name: Majkrzak, Charles F.
name: Metting, Christopher
name: Maranville, Brian B.
name: Dura, Joseph A.
name: Satija, Sushil
name: Udovic, Terrence
name: Berk, Norman F.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The primary purpose of this investigation is to determine the effective coherent extent of the neutron wave packet transverse to its mean propagation vector k, when it is prepared in a typical instrument used to study the structure of materials in thin film form via specular reflection. There are two principal reasons for doing so. One has to do with the fundamental physical interest in the characteristics of a free neutron as a quantum object while the other is of a more practical nature, relating to the understanding of how to interpret elastic scattering data when the neutron is employed as a probe of condensed matter structure on an atomic or nanometer scale. Knowing such a basic physical characteristic as the neutron's effective transverse coherence can dictate how to properly analyze specular reflectivity data obtained for material film structures possessing some amount of in-plane inhomogeneity. In this study we describe a means of measuring the effective transverse coherence length of the neutron wave packet by specular reflection from a series of diffraction gratings of different spacings. Complementary non-specular measurements of the widths of grating reflections were also performed which corroborate the specular results. (Part I principally describes measurements interpreted according to the theoretical picture presented in Part II.) Each grating was fabricated by lift-off photo-lithography patterning of a nickel film (approximately 1000 Angstroms thick) formed by physical vapor deposition on a flat silicon crystal surface. The grating periods ranged from 10 microns (5 microns Ni stripe, 5 microns intervening space) to several hundred microns. The transverse coherence length, modeled as the width of the wave packet, was determined from an analysis of the specular reflectivity curves of the set of gratings.
description: 9 January 2014 Re: AJ10970 Dear Dr. Majkrzak, We are pleased to inform you that your manuscript has been accepted for publication as a Regular Article in Physical Review A
REVIEWS: The letter-books of Samuel Wilberforce 1843-1868, edited by R K Pugh; Hilltop villages of the Chilterns: Cholesbury, Hawridge, St Leonards and Buckland Common, by David and Joan Hay; The picture book of brasses in gilt, by Henry Trivick; West Wycombe, its history and attractions, by Herbert Green; A plan for the Chilterns; Long Crendon, a short history, by Joyce Donald
Creators: name: Baines, Arnold H J
Publisher: name: Archaeology Data Service
Year: 2023

description: Records of Buckinghamshire, 19 (1), 99-103
Transport-limited water splitting at ion-selective interfaces during concentration polarization
Creators: name: Nielsen, Christoffer P.
name: Bruus, Henrik
Publisher: name: arXiv
Year: 2013
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We present an analytical model of salt- and water-ion transport across an ion-selective interface based on an assumption of local equilibrium of the water-dissociation reaction. The model yields current-voltage characteristics and curves of water-ion current versus salt-ion current, which are in qualitative agreement with experimental results published in the literature. The analytical results are furthermore in agreement with direct numerical simulations. As part of the analysis, we find approximate solutions to the classical problem of pure salt transport across an ion-selective interface. These solutions provide closed-form expressions for the current-voltage characteristics, which include the overlimiting current due to the development of an extended space charge region. Finally, we discuss how the addition of an acid or a base affects the transport properties of the system and thus provide predictions accessible to further experimental tests of the model.
description: 14 pages, 12 figures, RevTex
Sub-nanometer resolution in three-dimensional magnetic-resonance imaging of individual dark spins
Creators: name: Grinolds, M. S.
name: Warner, M.
name: De Greve, K.
name: Dovzhenko, Y.
name: Thiel, L.
name: Walsworth, R. L.
name: Hong, S.
name: Maletinsky, P.
name: Yacoby, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Magnetic resonance imaging (MRI) has revolutionized biomedical science by providing non-invasive, three-dimensional biological imaging. However, spatial resolution in conventional MRI systems is limited to tens of microns, which is insufficient for imaging on molecular and atomic scales. Here we demonstrate an MRI technique that provides sub-nanometer spatial resolution in three dimensions, with single electron-spin sensitivity. Our imaging method works under ambient conditions and can measure ubiquitous 'dark' spins, which constitute nearly all spin targets of interest and cannot otherwise be individually detected. In this technique, the magnetic quantum-projection noise of dark spins is measured using a single nitrogen-vacancy (NV) magnetometer located near the surface of a diamond chip. The spatial distribution of spins surrounding the NV magnetometer is imaged with a scanning magnetic-field gradient. To evaluate the performance of the NV-MRI technique, we image the three-dimensional landscape of dark electronic spins at and just below the diamond surface and achieve an unprecedented combination of resolution (0.8 nm laterally and 1.5 nm vertically) and single-spin sensitivity. Our measurements uncover previously unidentified electronic spins on the diamond surface, which can potentially be used as resources for improved magnetic imaging of samples proximal to the NV-diamond sensor. This three-dimensional NV-MRI technique is immediately applicable to diverse systems including imaging spin chains, readout of individual spin-based quantum bits, and determining the precise location of spin labels in biological systems.
description: 7 pages, 4 figures
Intermittency in an Optomechanical Cavity Near a Subcritical Hopf Bifurcation
Creators: name: Suchoi, Oren
name: Ella, Lior
name: Shtempluk, Oleg
name: Buks, Eyal
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We experimentally study an optomechanical cavity consisting of an oscillating mechanical resonator embedded in a superconducting microwave transmission line cavity. Tunable optomechanical coupling between the mechanical resonator and the microwave cavity is introduced by positioning a niobium-coated single mode optical fiber above the mechanical resonator. The capacitance between the mechanical resonator and the coated fiber gives rise to optomechanical coupling, which can be controlled by varying the fiber-resonator distance. We study radiation pressure induced self-excited oscillations as a function of microwave driving parameters (frequency and power). Intermittency between limit cycle and steady state behaviors is observed with blue-detuned driving frequency. The experimental results are accounted for by a model that takes into account the Duffing-like nonlinearity of the microwave cavity. A stability analysis reveals a subcritical Hopf bifurcation near the region where intermittency is observed.
description: 6 Pages, 3 Figures
The effects of selection on the genomic architecture of the Italian Large White and Duroc heavy pigs
Creators: name: Bertolini, F
name: Schiavo, G
name: Tinarelli, S
name: Gallo, M
name: Rothschild, MF
name: Fontanesi, L
Publisher: name: Zenodo
Year: 2018

description: Artificial selection may cause an increasing of homozygosity in circumscribed regions of the genome and lead to allele drift. This is particularly important for selection nuclei of pure breeds. In this work we analysed the genome of the Italian Large White (ILW) and Italian Duroc (ID) breeds, that are purposely selected for the heavy pig breeding industry, to identify regions of high homozygosity. A total of 1,953 Italian Large White and 460 Italian Duroc pigs were genotyped with the Illumina PorcineSNP60 BeadChip. Filtering was performed to remove poor quality single nucleotide polymorphisms (SNPs) having call rate<0.9 that were then imputed whereas no other filter was applied. The Runs of Homozygosity (ROH) analyses were performed with the sliding window-based option of the Plink 1.9 software, allowing a minimum of 30 SNP to define a ROH. Then, for each SNP, the percentage of the number of animals that have a ROH containing the SNP was calculated and the top 0.994 percentile of the SNPs empirical distribution was considered. The analyses of the ILW detected four regions, three on porcine chromosome (SSC) 1 and one region on SSC14, with size from ~1 to 5 Mb and with maximum peak of shared regions of 70% on SSC1. The analysis of the ID pigs showed several SNPs shared by more than the 50% of the animals, particularly two regions on SSC9 and SSC15, with maximum peak of 95% on SSC15. The detected regions contained genes involved in functions such as DNA repair and biosynthesis of cellular amino acid. The possible effects of these regions and the genes included in relation to production traits still need to be analysed. Partially funded by European Union’s H2020 RIA program (grant agreement no. 634476).
Near Infrared Spectra and Intrinsic Luminosities of Candidate Type II Quasars at 2 < z < 3.4
Creators: name: Greene, Jenny E
name: Alexandroff, Rachael
name: Strauss, Michael A
name: Zakamska, Nadia L
name: Lang, Dustin
name: Liu, Guilin
name: Pattarakijwanich, Petchara
name: Hamann, Frederick
name: Ross, Nicholas P
name: Myers, Adam D
name: Brandt, W Niel
name: York, Donald
name: Schneider, Donald P
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present JHK near-infrared (NIR) spectroscopy of 25 candidate Type II quasars selected from the Sloan Digital Sky Survey, using Triplespec on the Apache Point Observatory 3.5m telescope, FIRE at the Magellan/Baade 6.5m telescope, and GNIRS on Gemini. At redshifts of 2 < z < 3.4, our NIR spectra probe the rest-frame optical region of these targets, which were initially selected to have strong lines of CIV and Ly alpha, with FWHM<2000 km/s from the SDSS pipeline. We use the [OIII]5007 line shape as a model for the narrow line region emission, and find that \halpha\ consistently requires a broad component with FWHMs ranging from 1000 to 7500 km/s. Interestingly, the CIV lines also require broad bases, but with considerably narrower widths of 1000 to 4500 km/s. Estimating the extinction using the Balmer decrement and also the relationship in lower-z quasars between rest equivalent width and luminosity in the [OIII] line, we find typical A_V values of 0-2 mag, which naturally explain the attenuated CIV lines relative to Halpha. We propose that our targets are moderately obscured quasars. We also describe one unusual object with three distinct velocity peaks in its [OIII] spectrum.
description: Accepted for publication in ApJ, 18 pages, 14 figures
Mobile Robots in Teaching Programming for IT Engineers and its Effects
Creators: name: Pasztor, Attila
name: Pap-Szigeti, Robert
name: Torok, Erika
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computers and Society (cs.CY)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: In this paper the new methods and devices introduced into the learning process of programming for IT engineers at our college is described. Based on our previous research results we supposed that project methods and some new devices can reduce programming problems during the first term. These problems are rooted in the difficulties of abstract thinking and they can cause the decrease of programming self-concept and other learning motives. We redesigned the traditional learning environment. As a constructive approach project method was used. Our students worked in groups of two or three; small problems were solved after every lesson. In the problem solving process students use programmable robots (e.g. Surveyor, LEGO NXT and RCX). They had to plan their program, solve some technical problems and test their solution. The usability of mobile robots in the learning process and the short-term efficiency of our teaching method were checked with a control group after a semester (n = 149). We examined the effects on our students' programming skills and on their motives, mainly on their attitudes and programming self-concept. After a two-year-long period we could measure some positive long-term effects.
description: Article Published in International Journal of Advanced Computer Science and Applications(IJACSA), Volume 4 Issue 11, 2013
Incidence of RYR1 genotype and its effect on meat quality in Slovenian Krškopolje pigs
Creators: name: Škrlep, M
name: Tomažin, U
name: Batorek Lukač, N
name: Prevolnik Povše, M
name: Ogorevc, J
name: Dovč, P
name: Čandek-Potokar, M
Publisher: name: Zenodo
Year: 2018

description: In this study (of project TREASURE*), two objectives were pursued; to investigate the incidence and effect of RYR1 genotype on carcass and meat quality traits in the only Slovenian local pig breed Krškopolje (KK). Thirty-six castrates originating from 12 litters were reared on the same farm and slaughtered in a commercial abattoir at the average age of 228±6 days and weight of 121±14 kg. Carcass properties and longissimus dorsi (LD) quality traits and chemical composition were determined. Pigs were genotyped for c. C1843 (p. Arg615Cys) at RYR1 locus by PCR-RFLP method (mutant allele further denoted as ‘n’ and wild as ‘N’). Data were analysed using GLM procedure of SAS/STAT module, with fixed effect of RYR1 genotype in the model. Genotype frequencies were 2.7, 41.6 and 55.5% for n/n, N/n and N/N respectively. Compared to N/N animals, pigs with mutant recessive allele (N/n) exhibited lower growth rate and leaner

carcasses (i.e. higher lean meat %, muscle thickness and loin eye area, thinner backfat and smaller fat area over LD, P<0.05). A marked effect of RYR1 on meat quality was also observed. In N/n pigs, the rate of pH fall was faster (P<0.05). Meat of N/n pigs exhibited also higher shear force resistance (P<0.05) in addition to lower water holding capacity (higher drip, thawing and cooking loss, P<0.05). The present results demonstrate relatively high incidence of RYR1 mutation in KK pigs calling for more breeding effort for its elimination and thus improvement of meat quality and processing aptitude of the breed. Funded by European Union’s H2020 RIA program (grant agreement no. 634476).
An online phenotype database: first step towards breeding programs in local pig breeds
Creators: name: Mercat, MJ
name: Zahlan, E
name: Petig, M
name: Lenoir, H
name: Cheval, P
name: Čandek-Potokar, M
name: Škrlep, M
name: Kastelic, A
name: Lukić, B
name: Nunes, J
name: Pires, P
name: Lebret, B
Publisher: name: Zenodo
Year: 2018

description: In order to further allow implementation of breeding programs in local pig breeds, with selection objectives defined for each local breed, we aimed at developing a standardised recording of carcass and meat quality traits. These data have to be connected with herdbooks to estimate genetic parameters of the traits (heritabilities and genetic correlations) which are necessary to define breeding objectives. Today the situation is very different from one local breed to another. No or very few phenotypes are recorded in some of them, while breeding programs already exist for a few breeds. To promote phenotyping, a dedicated database and a website were developed in the frame of the TREASURE project. First, the required variables have been collected for six local breeds: Basque (FR), Bísaro (PT), Crna slavonska (HR), Gascon (FR), Krškopoljski (SI) and Schwäbisch-Hällisches (DE). In total 74 variables have been identified dealing with animal herdbook information (10), rearing and growth (22), carcass (22) and meat quality (20) attributes. The database is compatible with the various identifiers used in the different countries: animal IDs, breed, farm… codifications. Major attention has been paid to the description of measurement methods of traits. Thus, each carcass and meat quality phenotype is associated to a method description representing 35 additional variables. The website can be easily translated into several languages. The website and database are currently on test until the end of the TREASURE project. All the breeds studied in TREASURE are free to use these tools. The database can be duplicated so that each partner can host its own data. Funded by European Union H2020 RIA program (grant agreement no. 634476).
Constraining models of initial state with $v_2$ and $v_3$ data from LHC and RHIC
Creators: name: Retinskaya, Ekaterina
name: Luzum, Matthew
name: Ollitrault, Jean-Yves
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present a combined analysis of elliptic and triangular flow data from LHC and RHIC using viscous relativistic hydrodynamics. Elliptic flow $v_2$ in hydrodynamics is proportional to the participant eccentricity $\varepsilon_2$ and triangular flow is proportional to the participant triangularity $\varepsilon_3$, which means $v_n=C_n\varepsilon_n$, where $C_n$ is the linear response coefficient in harmonic n. Experimental data for $v_2$ and $v_3$ combined with hydrodynamic calculations of $C_n$ thus provide us with the rms values of initial anisotropies $\varepsilon_2$ and $\varepsilon_3$. By varying free parameters in the hydro calculation (in particular the shear viscosity), we obtain an allowed band in the (rms $\varepsilon_2$, rms $\varepsilon_3$) plane. Comparison with Monte-Carlo models of the initial state allows us to exclude several of these models. We illustrate that the effect of changing the granularity of the initial state is similar to changing the medium properties, making these effects difficult to disentangle.
description: 6 pages, plenary talk at the International Conference on the Initial Stages in High-Energy Nuclear Collisions 2013 (IS2013), 8-14 September 2013, Illa da Toxa, Spain
Coreshine in L1506C - Evidence for a primitive big-grain component or indication for a turbulent core history?
Creators: name: Steinacker, J.
name: Ormel, C. W.
name: Andersen, M.
name: Bacmann, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The recently discovered coreshine effect can aid in exploring the core properties and in probing the large grain population of the ISM. We discuss the implications of the coreshine detected from the molecular cloud core L1506C in the Taurus filament for the history of the core and the existence of a primitive ISM component of large grains becoming visible in cores. The coreshine surface brightness of L1506C is determined from IRAC Spitzer images at 3.6 micron. We perform grain growth calculations to estimate the grain size distribution in model cores similar in gas density, radius, and turbulent velocity to L1506C. Scattered light intensities at 3.6 micron are calculated for a variety of MRN and grain growth distributions to compare with the observed coreshine. For a core with the overall physical properties of L1506C, no detectable coreshine is predicted for an MRN size distribution. Extending the distribution to grain radii of about 0.65 $μ$m allows to reproduce the observed surface brightness level in scattered light. Assuming the properties of L1506C to be preserved, models for the growth of grains in cores do not yield sufficient scattered light to account for the coreshine within the lifetime of the Taurus complex. Only increasing the core density and the turbulence amplifies the scattered light intensity to a level consistent with the observed coreshine brightness. The grains could be part of primitive omni-present large grain population becoming visible in the densest part of the ISM, could grow under the turbulent dense conditions of former cores, or in L1506C itself. In the later case, L1506C must have passed through a period of larger density and stronger turbulence. This would be consistent with the surprisingly strong depletion usually attributed to high column densities, and with the large-scale outward motion of the core envelope observed today.
description: 6 pages, 6 figures, accepted for publication in Astronomy & Astrophysics
Quantum transport in chemically functionalized graphene at high magnetic field: Defect-Induced Critical States and Breakdown of Electron-Hole Symmetry
Creators: name: Leconte, Nicolas
name: Ortmann, Frank
name: Cresti, Alessandro
name: Charlier, Jean-Christophe
name: Roche, Stephan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Unconventional magneto-transport fingerprints in the quantum Hall regime (with applied magnetic field from one to several tens of Tesla) in chemically functionalized graphene are reported. Upon chemical adsorption of monoatomic oxygen (from 0.5% to few percents), the electron-hole symmetry of Landau levels is broken, while a double-peaked conductivity develops at low-energy, resulting from the formation of critical states conveyed by the random network of defects-induced impurity states. Scaling analysis hints towards the existence of an additional zero-energy quantized Hall conductance plateau, which is here not connected to degeneracy lifting of Landau levels by sublattice symmetry breakage. This singularly contrasts with usual interpretation, and unveils a new playground for tailoring the fundamental characteristics of the quantum Hall effect.
description: 7 pages, 7 figures, accepted in 2D Materials
On the geometry of gradient Einstein-type manifolds
Creators: name: Catino, Giovanni
name: Mastrolia, Paolo
name: Monticelli, Dario
name: Rigoli, Marco
Publisher: name: arXiv
Year: 2014
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: In this paper we introduce the notion of Einstein-type structure on a Riemannian manifold $\varrg$, unifying various particular cases recently studied in the literature, such as gradient Ricci solitons, Yamabe solitons and quasi-Einstein manifolds. We show that these general structures can be locally classified when the Bach tensor is null. In particular, we extend a recent result of Cao and Chen.
Formation of Molecular Clouds and Global Conditions for Star Formation
Creators: name: Dobbs, Clare L.
name: Krumholz, Mark R.
name: Ballesteros-Paredes, Javier
name: Bolatto, Alberto D.
name: Fukui, Yasuo
name: Heyer, Mark
name: Mac Low, Mordecai-Mark
name: Ostriker, Eve C.
name: Vázquez-Semadeni, Enrique
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Giant molecular clouds (GMCs) are the primary reservoirs of cold, star-forming molecular gas in the Milky Way and similar galaxies, and thus any understanding of star formation must encompass a model for GMC formation, evolution, and destruction. These models are necessarily constrained by measurements of interstellar molecular and atomic gas, and the emergent, newborn stars. Both observations and theory have undergone great advances in recent years, the latter driven largely by improved numerical simulations, and the former by the advent of large-scale surveys with new telescopes and instruments. This chapter offers a thorough review of the current state of the field.
description: 25 pages, 7 figures, Accepted for publication as a chapter in Protostars and Planets VI, University of Arizona Press (2014), eds. H. Beuther, R. Klessen, C. Dullemond, Th. Henning
Chirality asymptotic behavior and non-Markovianity in quantum walks on a line
Creators: name: Hinarejos, Margarida
name: Di Franco, Carlo
name: Romanelli, Alejandro
name: Pérez, Armando
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the time evolution of the chirality reduced density matrix for a discrete-time quantum walk on a one-dimensional lattice, which is obtained by tracing out the spatial degree of freedom. We analyze the standard case, without decoherence, and the situation where decoherence appears in the form of broken links in the lattice. By examining the trace distance for possible pairs of initial states as a function of time, we conclude that the evolution of the reduced density matrix is non-Markovian, in the sense defined in [H. P. Breuer, E. M. Laine, and J. Piilo, Phys. Rev. Lett. 103, 210401 (2009)]. As the level of noise increases, the dynamics approaches a Markovian process. The highest non-Markovianity corresponds to the case without decoherence. The reduced density matrix tends always to a well-defined limit that we calculate, but only in the decoherence-free case this limit is non-trivial.
description: 8 pages, 5 figures
Synthesis, structural characterization, Hirshfeld surface and theoretical studies of 2-bromopyridinium picrate
Creators: name: Kayalvizhi, K.
name: Balakrishnan, C.
name: Suppuraj, P.
name: Lakshmanan, P.
name: Kalpana, S.
name: Senthan, S.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: Biophysics
Biochemistry
Physical Sciences not elsewhere classified
Medicine
Chemical Sciences not elsewhere classified
Virology

description: Single-crystal X-ray diffraction analysis was used to determine the crystal structure of 2-bromopyridinium picrate (2BPP), which was formed using a slow evaporation solution growth approach. It belongs to a triclinic system with the centrosymmetric space group Pī. Supramolecular assembly is constructed by N-H•••O and π•••π stacking interaction. By employing FT-IR analysis to identify the functional groups that are present in the molecule, the band gap energy was calculated by using the Kubelka-Munk algorithm. A study of the intermolecular interactions and crystal packing using Hirshfeld surface analysis, derived by single crystal XRD data, reveals the close contacts associated with strong interactions. Theoretical calculations were done by the density functional theory (DFT) method.
Dissemination/communication plan and 12M dissemination/communication report
Creators: name: Glaskova-Kuzmina, Tatjana
Publisher: name: Zenodo
Year: 2018
Subjects: Dissemination/communication plan anr report, POSTDOC-Latvia

description: Two open-access documents - dissemination/communication plan and 12M dissemination/communication report are provided for the project “Environmental effects on physical properties of smart composites and FRP modified by carbonaceous nanofillers for structural applications”, project No.1.1.1.2/VIAA/1/16/066.

Activity 1.1.1.2 “Post-doctoral Research Aid” of the Specific Aid Objective 1.1.1 “To increase the research and innovative capacity of scientific institutions of Latvia and the ability to attract external financing, investing in human resources and infrastructure” of the Operational Programme “Growth and Employment”.
Symmetry in Critical Random Boolean Network Dynamics
Creators: name: Hossein, Shabnam
name: Reichl, Matthew D.
name: Bassler, Kevin E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Using Boolean networks as prototypical examples, the role of symmetry in the dynamics of heterogeneous complex systems is explored. We show that symmetry of the dynamics, especially in critical states, is a controlling feature that can be used both to greatly simplify analysis and to characterize different types of dynamics. Symmetry in Boolean networks is found by determining the frequency at which the various Boolean output functions occur. There are classes of functions that consist of Boolean functions that behave similarly. These classes are orbits of the controlling symmetry group. We find that the symmetry that controls the critical random Boolean networks is expressed through the frequency by which output functions are utilized by nodes that remain active on dynamical attractors. This symmetry preserves canalization, a form of network robustness. We compare it to a different symmetry known to control the dynamics of an evolutionary process that allows Boolean networks to organize into a critical state. Our results demonstrate the usefulness and power of using the symmetry of the behavior of the nodes to characterize complex network dynamics, and introduce a novel approach to the analysis of heterogeneous complex systems.
Lattice polarized irreducible holomorphic symplectic manifolds
Creators: name: Camere, Chiara
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14J15, 32G13, 14J33, 14J35

description: We generalize Nikulin's and Dolgachev's lattice-theoretical mirror symmetry for K3 surfaces to lattice polarized higher dimensional irreducible holomorphic symplectic manifolds. In the case of fourfolds of $K3^{\left[2\right]}-$type we then describe mirror families of polarized fourfolds and we give an example with mirror non-symplectic involutions.
description: Comments are welcome
Hα spectroscopy and multiwavelength imaging of a solar flare caused by filament eruption
Creators: name: Huang, Z.
name: Madjarska, M. S.
name: Koleva, K.
name: Doyle, J. G.
name: Duchlev, P.
name: Dechev, M.
name: Reardon, K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study a sequence of eruptive events including filament eruption, a GOES C4.3 flare and a coronal mass ejection. We aim to identify the possible trigger(s) and precursor(s) of the filament destabilisation; investigate flare kernel characteristics; flare ribbons/kernels formation and evolution; study the interrelation of the filament-eruption/flare/coronal-mass-ejection phenomena as part of the integral active-region magnetic field configuration; determine Hα line profile evolution during the eruptive phenomena. Multi-instrument observations are analysed including Hα line profiles, speckle images at Hα-0.8 Å and Hα+0.8 Å from IBIS at DST/NSO, EUV images and magnetograms from the SDO, coronagraph images from STEREO and the X-ray flux observations from FERMI and GOES. We establish that the filament destabilisation and eruption are the main trigger for the flaring activity. A surge-like event with a circular ribbon in one of the filament footpoints is determined as the possible trigger of the filament destabilisation. Plasma draining in this footpoint is identified as the precursor for the filament eruption. A magnetic flux emergence prior to the filament destabilisation followed by a high rate of flux cancelation of 1.34$\times10^{16}$ Mx s$^{-1}$ is found during the flare activity. The flare X-ray lightcurves reveal three phases that are found to be associated with three different ribbons occurring consecutively. A kernel from each ribbon is selected and analysed. The kernel lightcurves and H alpha line profiles reveal that the emission increase in the line centre is stronger than that in the line wings. A delay of around 5-6 mins is found between the increase in the line centre and the occurrence of red asymmetry. Only red asymmetry is observed in the ribbons during the impulsive phases. Blue asymmetry is only associated with the dynamic filament.
description: Accepted by A&A, 18 pages, 16 figures