cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Trapping Redundancy of Linear Block Codes
Creators: name: Laendner, Stefan
name: Hehn, Thorsten
name: Milenkovic, Olgica
name: Huber, Johannes B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We generalize the notion of the stopping redundancy in order to study the smallest size of a trapping set in Tanner graphs of linear block codes. In this context, we introduce the notion of the trapping redundancy of a code, which quantifies the relationship between the number of redundant rows in any parity-check matrix of a given code and the size of its smallest trapping set. Trapping sets with certain parameter sizes are known to cause error-floors in the performance curves of iterative belief propagation decoders, and it is therefore important to identify decoding matrices that avoid such sets. Bounds on the trapping redundancy are obtained using probabilistic and constructive methods, and the analysis covers both general and elementary trapping sets. Numerical values for these bounds are computed for the [2640,1320] Margulis code and the class of projective geometry codes, and compared with some new code-specific trapping set size estimates.
description: 12 pages, 4 tables, 1 figure, accepted for publication in IEEE Transactions on Information Theory
Amphoteric refraction at the interface between isotropic and anisotropic media
Creators: name: Luo, Hailu
name: Hu, Wei
name: Yi, Xunong
name: Liu, Haiying
name: Zhu, Jing
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: It is found that the amphoteric refraction, i.e. the refraction can be either positive or negative depending on the incident angles, could occur at a planar interface associated with a uniaxially anisotropic positive index media (PIM) or an anisotropic negative index media (NIM). Particularly, the anomalous negative refraction can occur at a planar interface from an isotropic PIM to an anisotropic PIM, whereas the anomalous positive refraction occurs at the interface from an isotropic PIM to an anisotropic NIM. The optimal conditions to yield the two unusual refractions are obtained. The difference of the two types of amphoteric refraction is discussed.
description: 12 pages, 5 figures
General Relativistic Magnetohydrodynamic Simulations of Jet Formation and Large-Scale Propagation from Black Hole Accretion Systems
Creators: name: McKinney, Jonathan C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The formation and large-scale propagation of Poynting-dominated jets produced by accreting, rapidly rotating black hole systems are studied by numerically integrating the general relativistic magnetohydrodynamic equations of motion to follow the self-consistent interaction between accretion disks and black holes. This study extends previous similar work by studying jets till $t\approx 10^4GM/c^3$ out to $r\approx 10^4GM/c^2$, by which the jet is super- fast magnetosonic and moves at a lab-frame bulk Lorentz factor of $Γ\sim 10$ with a maximum terminal Lorentz factor of $Γ_\infty\lesssim 10^3$. The radial structure of the Poynting-dominated jet is piece-wise self-similar, and fits to flow quantities along the field line are provided. Beyond the \alf surface at $r\sim 10$--$100GM/c^2$, the jet becomes marginally unstable to (at least) current-driven instabilities. Such instabilities drive shocks in the jet that limit the efficiency of magnetic acceleration and collimation. These instabilities also induce jet substructure with $3\lesssimΓ\lesssim 15$. The jet is shown to only marginally satisfy the necessary and sufficient conditions for kink instability, so this may explain how astrophysical jets can extend to large distances without completely disrupting. At large distance, the jet angular structure is Gaussian-like (or uniform within the core with sharp exponential wings) with a half-opening angle of $\approx 5^\circ$ and there is an extended component out to $\approx 27^\circ$. Unlike in some hydrodynamic simulations, the environment is found to play a negligible role in jet structure, acceleration, and collimation as long as the ambient pressure of the surrounding medium is small compared to the magnetic pressure in the jet.
description: 25 pages, 11 figures, accepted for publication in MNRAS Main Journal (astro-ph/0506369 with pair creation under revision to focus on GRBs)
$Δ+300$ is a Bound on the Adjacent Vertex Distinguishing Edge Chromatic Number
Creators: name: Hatami, Hamed
Publisher: name: arXiv
Year: 2007
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C15

description: An adjacent vertex distinguishing edge-coloring or an \avd-coloring of a simple graph $G$ is a proper edge-coloring of $G$ such that no pair of adjacent vertices meets the same set of colors. We prove that every graph with maximum degree $Δ$ and with no isolated edges has an \avd-coloring with at most $Δ+300$ colors, provided that $Δ>10^{20}$.
Conditional control of the quantum states of remote atomic memories for quantum networking
Creators: name: Felinto, D.
name: Chou, C. W.
name: Laurat, J.
name: Schomburg, E. W.
name: de Riedmatten, H.
name: Kimble, H. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum networks hold the promise for revolutionary advances in information processing with quantum resources distributed over remote locations via quantum-repeater architectures. Quantum networks are composed of nodes for storing and processing quantum states, and of channels for transmitting states between them. The scalability of such networks relies critically on the ability to perform conditional operations on states stored in separated quantum memories. Here we report the first implementation of such conditional control of two atomic memories, located in distinct apparatuses, which results in a 28-fold increase of the probability of simultaneously obtaining a pair of single photons, relative to the case without conditional control. As a first application, we demonstrate a high degree of indistinguishability for remotely generated single photons by the observation of destructive interference of their wavepackets. Our results demonstrate experimentally a basic principle for enabling scalable quantum networks, with applications as well to linear optics quantum computation.
description: 10 pages, 8 figures; Minor corrections. References updated. Published at Nature Physics 2, Advanced Online Publication of 10/29 (2006)
The influence of surface currents on the dispersal of coho salmon (Oncorhynchus kisutch) from the Strait of Georgia
Creators: name: Wagey, Gabriel Antonius
Publisher: name: University of British Columbia
Year: 2009

description: The dispersal pattern of coho salmon (Oncorhynchus kisutch) was studied to explore the extent to which coho distribution can be explained by random movement and advection by surface currents. A computer simulation model was constructed to simulate the dispersal of tagged coho salmon after 13 months of ocean residence. The simulation model is spatially organized into 310 habitat boxes representing the waters surrounding Vancouver Island. Simulated fish represented by number of particles were released and subject to pure random walk and biased random walk procedures. The biases in particle movements were proportional to the strength and direction of the surface currents. The behaviour of the fish also included a weak shore seeking tendency. The general pattern of surface currents of the waters around Vancouver Island was estimated using the results of oceanographic studies available from that area. Best estimates of surface current was based on the seasonal pattern in each major water bodies. Catch-effort analysis was performed to determine the nature of troll fisheries which are used to compare the results of the model. The troll fisheries are found to be more intensive in the outside region (in the west coast of Vancouver Island) than in the Strait of Georgia region. The distribution of tag recoveries was analyzed by using the abundance index of tag per unit effort (TPUE) from each recovery regions. From the TPUE distribution of Big Qualicum fish, it is significant that there are more fish in the inside area, especially in the Strait of Georgia region compared to the outside area. The simulation results show that the model is sensitive to current as compared to random movement. The general pattern of simulated fish distribution is found to be abundant in the Strait of Georgia region, followed by the Central troll region in the northern part of Vancouver Island, and the southwest and northwest regions, respectively. Trapping event by the surface current is speculated to cause the high proportion of fish in the Strait of Georgia compared to other regions. The comparison between the distribution resulted from the simulation models and the observed distribution from the tag return data shows a qualitative similarity which suggests that the influence of surface currents on fish dispersal is apparent. From this study it is apparent that the influence of surface currents alone is not enough to account for interannual variability in the distribution of tag recoveries. Several factors, such as directed migration of the fish, availability of food and oceanographic conditions, including anomalous flushing events, wind and sea surface temperature, were speculated to become the potential factors that might cause the interannual variations.
Late-time oscillatory behaviour for self-gravitating scalar fields
Creators: name: Rendall, Alan D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This paper investigates the late-time behaviour of certain cosmological models where oscillations play an essential role. Rigorous results are proved on the asymptotics of homogeneous and isotropic spacetimes with a linear massive scalar field as source. Various generalizations are obtained for nonlinear massive scalar fields, $k$-essence models and $f(R)$ gravity. The effect of adding ordinary matter is discussed as is the case of nonlinear scalar fields whose potential has a degenerate zero.
description: 17 pages, additional references
The response of ultralight dark matter to supermassive black holes and binaries
Creators: name: Annulli, Lorenzo
name: Cardoso, Vitor
name: Vicente, Rodrigo
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Scalar fields can give rise to confined structures, such as boson stars or Q-balls. These objects are interesting hypothetical new "dark matter stars," but also good descriptions of dark matter haloes when the fields are ultralight. Here, we study the dynamical response of such confined bosonic structures when excited by external matter (stars, planets or black holes) in their vicinities. Such perturbers can either be plunging through the bosonic configuration or simply act as periodic sources. Our setup can also efficiently describe the interaction between a massive black hole and the surrounding environment, shortly after the massive body has undergone a "kick", due to the collapse of baryonic matter at the galactic center. It also depicts dark matter depletion as a reaction to an inspiralling binary within the halo. We calculate total energy loss, and linear and angular momenta radiated during these processes, and perform the first self-consistent calculation of dynamical friction acting on moving bodies in these backgrounds. We show that the gravitational collapse to a supermassive black hole at the center of a Newtonian boson star (NBS) is accompanied by a small change in the surrounding core. The NBS eventually gets accreted, but only on times larger than a Hubble scale for astrophysical parameters. Stellar or supermassive binaries are able to "stir" and expel scalar from the NBS. For binaries in the LIGO or LISA band, close to coalescence, scalar emission affects the waveform at leading $-6$ PN order with respect to the dominant quadrupolar term; the coefficient is too small to allow detection by next-generation interferometers. Our results provide a complete picture of the interaction between black holes or stars and the ultralight dark matter environment they live in.
description: 38 pages, 16 figures, RevTex4. Comments are welcome
THE IMPORTANCE OF STUDYING AND ANALYZING LITERARY TEXTS.
Creators: name: Mukhtorova, Rakhimakhon
Publisher: name: Zenodo
Year: 2024

description: The basis of the creation of the artistic text is the elements of the artistic style. The artistic style has a unique position among the functional styles of the Uzbek language, and at the same time, it also has its own standards. The main feature of the artistic style is the wide range of possibilities to cover language material, the use of all the linguistic units that exist in the national language, the elements characteristic of other functional styles, and the fact that they serve an important task to fulfill an artistic-aesthetic task. Also, in the artistic style, in particular, in poetic speech, a number of words that do not meet the requirements of the current literary orthographic standard are used. In this style, artistic tools such as metaphor, metonymy, synecdoche, and exaggeration are widely used. In Uzbek linguistics, serious research has been carried out in the field of artistic text research.
Random cubic graphs are not homomorphic to the cycle of size 7
Creators: name: Hatami, Hamed
Publisher: name: arXiv
Year: 2007
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C80

description: We prove that a random cubic graph almost surely is not homomorphic to a cycle of size 7. This implies that there exist cubic graphs of arbitrarily high girth with no homomorphisms to the cycle of size 7.
Sharp two-sided heat kernel estimates for critical Schrödinger operators on bounded domains
Creators: name: Filippas, Stathis
name: Moschini, Luisa
name: Tertikas, Achilles
Publisher: name: arXiv
Year: 2006
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35K65, 26D10 (Primary) 35K20, 35B05 (Secondary)

description: On a smooth bounded domain Ω\subset R^N we consider the Schrödinger operators -Δ-V, with V being either the critical borderline potential V(x)=(N-2)^2/4 |x|^{-2} or V(x)=(1/4) dist (x,\partialΩ)^{-2}, under Dirichlet boundary conditions. In this work we obtain sharp two-sided estimates on the corresponding heat kernels. To this end we transform the Scrödinger operators into suitable degenerate operators, for which we prove a new parabolic Harnack inequality up to the boundary. To derive the Harnack inequality we have established a serier of new inequalities such as improved Hardy, logarithmic Hardy Sobolev, Hardy-Moser and weighted Poincaré. As a byproduct of our technique we are able to answer positively to a conjecture of E.B.Davies.
description: 40 pages
Calculating and Comparing Biodiversity Materials Across Sites Using NEON Herbaceous Vegetation Data - a Tutorial
Creators: name: Styers, Diane
name: Schafer, Jennifer
name: Kolozsvary, Mary
name: Brubaker, Kristen
name: Scanga, Sara
name: Anderson, Laurel
name: Mitchell, Jessica
name: Barnett, David
Publisher: name: QUBES Educational Resources
Year: 2021

description: These materials are intended for use at the undergraduate level. They employ R and Excel software.
Two Polyakov Loop Correlators from D5-branes at Finite Temperature
Creators: name: Tai, Ta-Sheng
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study two Polyakov loop correlators in large $N$ limit of ${\cal{N}}=4$ super Yang-Mills theory at finite temperature using the AdS-Schwarzschild black hole. In the case that one of the two loops is of the anti-symmetric representation, we use D5-branes to evaluate them. The phase structure of these correlators is also examined. A previous result, derived in hep-th/9803135 and hep-th/9803137, is realized as a limiting case.}
description: 12 pages, 2 figures
Συγκριτική μελέτη στάσεων γηγενών και αλλοδαπών γονέων σε ό,τι αφορά την εμπλοκή τους στην ενδοσχολική και εξωσχολική ζωή των παιδιών τους: Το παράδειγμα του Νομού Μαγνησίας.:
Creators: name: Σάχου, Μαρία-Ελένη Αντωνίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Γονεϊκή εμπλοκή
Σχολείο
Οικογένεια
Parental involvement
School
Family

description: Κύριος σκοπός της εργασίας αυτής είναι να αποτυπώσει, να προσδιορίσει και να αναλύσει τις στάσεις Ελλήνων και μεταναστών γονέων σε ό,τι αφορά τη συμμετοχή τους στην ενδοσχολική και εξωσχολική ζωή των παιδιών τους και τις σχέσεις τους με το σχολείο καθώς και τους εκπαιδευτικούς της πρωτοβάθμιας εκπαίδευσης. Γι’ αυτό τον σκοπό πραγματοποιήθηκε ποσοτική έρευνα που διενεργήθηκε στον Νομό Μαγνησίας με δείγμα 283 γονείς ελληνικής και ξένης καταγωγής, των οποίων τα παιδιά φοιτούσαν στην Ε’ και Στ’ τάξη του δημοτικού σχολείου. Από τα αποτελέσματα της έρευνας διαφάνηκε πως οι γυναίκες και τα άτομα υψηλότερου μορφωτικού επιπέδου βοηθούν συστηματικότερα τα παιδιά τους στις κατ’ οίκον εργασίες, παρέχουν τις καταλληλότερες συνθήκες και ευκαιρίες μάθησης, εκδηλώνουν το υψηλότερο επίπεδο ενδιαφέροντος για τη σχολική ζωή του παιδιού, ενώ στον αντίποδα βρίσκονται οι αλλοεθνείς γονείς.
description: The main purpose of this study is to capture, identify and analyze the behavior types of Greek and immigrant parents regarding their involvement in the school and out of school life of their children and their relationship with the school and the teachers. For this purpose a quantitative research was conducted in Magnesia prefecture. The sample group consisted of 283 parents of Greek and foreign origin, whose children were enrolled in fifth and sixth grade of elementary school. From the results of research it was emerged that women and well educated parents help their children with their homework systematically, provide suitable conditions and learning opportunities, exhibit the highest level of interest in the school life of their children in contrast with immigrant parents.
title: Coordinative Stabilization of Single Bismuth Sites in a Carbon–Nitrogen Matrix to Generate Atom‐Efficient Catalysts for Electrochemical Nitrate Reduction to Ammonia
Creators: name: Zhang, Wuyong
name: Zhan, Shaoqi
name: Xiao, Jie
name: Petit, Tristan
name: Schlesiger, Christopher
name: Mellin, Maximilian
name: Hofmann, Jan P.
name: Heil, Tobias
name: Müller, Riccarda
name: Leopold, Kerstin
name: Oschatz, Martin
Publisher: name: Wiley-VCH
Year: 2024

description: Electrochemical nitrate reduction to ammonia powered by renewable electricity is not only a promising alternative to the established energy‐intense and non‐ecofriendly Haber–Bosch reaction for ammonia generation but also a future contributor to the ever‐more important denitrification schemes. Nevertheless, this reaction is still impeded by the lack of understanding for the underlying reaction mechanism on the molecular scale which is necessary for the rational design of active, selective, and stable electrocatalysts. Herein, a novel single‐site bismuth catalyst (Bi‐N‐C) for nitrate electroreduction is reported to produce ammonia with maximum Faradaic efficiency of 88.7% and at a high rate of 1.38 mg h⁻¹ mgcat⁻¹ at −0.35 V versus reversible hydrogen electrode (RHE). The active center (described as BiN₂C₂) is uncovered by detailed structural analysis. Coupled density functional theory calculations are applied to analyze the reaction mechanism and potential rate‐limiting steps for nitrate reduction based on the BiN₂C₂ model. The findings highlight the importance of model catalysts to utilize the potential of nitrate reduction as a new‐generation nitrogen‐management technology based on the construction of efficient active sites.
Interferometric data reduction with AMBER/VLTI.Principle,estimators and illustration
Creators: name: Tatulli, E.
name: consortium, the AMBER
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present in this paper an innovative data reduction method for single-mode interferometry. It has been specifically developed for the AMBER instrument, the three-beam combiner of the Very Large Telescope Interferometer, but can be derived for any single-mode interferometer. The algorithm is based on a direct modelling of the fringes in the detector plane. As such, it requires a preliminary calibration of the instrument in order to obtain the calibration matrix which builds the linear relationship between the interferogram and the interferometric observable, that is the complex visibility. Once the calibration procedure has been performed, the signal processing appears to be a classical least square determination of a linear inverse problem. From the estimated complex visibility, we derive the squared visibility, the closure phase and the spectral differential phase. The data reduction procedures are gathered into the so-called amdlib software, now available for the community, and presented in this paper. Furthermore, each step of this original algorithm is illustrated and discussed from various on-sky observations conducted with the VLTI, with a focus on the control of the data quality and the effective execution of the data reduction procedures. We point out the present limited performances of the instrument due to VLTI instrumental vibrations, difficult to calibrate.
description: 16 pages, 10 figures. Accepted in A&A
Eridanus II: A Fossil from Reionization with an Off-Center Star Cluster
Creators: name: Simon, Joshua D.
name: Brown, Thomas M.
name: Drlica-Wagner, Alex
name: Li, Ting S.
name: Avila, Roberto J.
name: Bechtol, Keith
name: Clementini, Gisella
name: Crnojevic, Denija
name: Garofalo, Alessia
name: Geha, Marla
name: Sand, David J.
name: Strader, Jay
name: Willman, Beth
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present deep Hubble Space Telescope (HST) photometry of the ultra-faint dwarf galaxy Eridanus II (Eri II). Eri II, which has an absolute magnitude of M_V = -7.1, is located at a distance of 339 kpc, just beyond the virial radius of the Milky Way. We determine the star formation history of Eri II and measure the structure of the galaxy and its star cluster. We find that a star formation history consisting of two bursts, constrained to match the spectroscopic metallicity distribution of the galaxy, accurately describes the Eri II stellar population. The best-fit model implies a rapid truncation of star formation at early times, with >80% of the stellar mass in place before z~6. A small fraction of the stars could be as young as 8 Gyr, but this population is not statistically significant; Monte Carlo simulations recover a component younger than 9 Gyr only 15% of the time, where they represent an average of 7 +/- 4% of the population. These results are consistent with theoretical expectations for quenching by reionization. The HST depth and angular resolution enable us to show that Eri II's cluster is offset from the center of the galaxy by a projected distance of 23 +/- 3 pc. This offset could be an indication of a small (~50-75 pc) dark matter core in Eri II. Moreover, we demonstrate that the cluster has a high ellipticity of 0.31 +0.05/-0.06 and is aligned with the orientation of Eri II within 3 +/- 6 degrees, likely due to tides. The stellar population of the cluster is indistinguishable from that of Eri II itself.
description: 17 pages, 12 figures, 3 tables. Accepted for publication in ApJ. Structural fitting code is available at https://github.com/jsimonastro/EriII-structural-fitting
Constraining the number of compact remnants near Sgr A*
Creators: name: Deegan, Patrick
name: Nayakshin, Sergei
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Due to dynamical friction stellar mass black holes and neutron stars are expected to form high density cusps in the inner parsec of our Galaxy. These compact remnants, expected to number around 20000, may be accreting cold dense gas present there, and give rise to potentially observable X-ray emission. Here we build a simple but detailed time-dependent model of such emission. We find that at least several X-ray sources of this nature should be detectable with Chandra at any one time. Turning this issue around, we also ask a question of what current observational constraints might be telling us about the total number of compact remnants. A cusp with ~ 40 thousand black holes over-predicts the number of discrete sources and the total X-ray luminosity of the inner parsec, and is hence ruled out. Future observations of the distribution and orbits of the cold ionised gas in the inner parsec of Sgr A* will put tighter constraints on the cusp of compact remnants.
description: 9 pages, 3 Postscript figures
Studies of Alexandrium Catenella (Dinophyceae)gametes
Creators: name: Greenway, L.L.
Publisher: name: University of British Columbia
Year: 2009

description: The life cycle of Alexandrium catenella (a Paralytic Shellfish Poison-producing dinoflagellate) facilitates bloom initiation, bloom decline, and species dispersal. Little is known of their gametes because they are indistinguishable from vegetative cells by morphology or ploidy. In this thesis study, (+) and (-) mating A catenella cultures (NEPCC #743 and #744) were isolated from Toquart Bay, Barkley Sound, BC. These were maintained in enriched Barkley Sound seawater: artificial seawater medium induced aberrant cell forms and natural water from a local site produced slower growth and reduced the percentage of culture in chains. The sexual cycle was induced by transferring cultures into N/10 medium. Cultures were mixed in stationary phase and cysts appeared in 10-12 d, suggesting that gametes were present after ~6 d. Encystment rates were highest in N-deplete medium (15.0%); but encystment was possible in N-replete medium, in many containers, at all times of the year, and was not affected by salinity (26 vs. 31). Blue light and germanium dioxide appeared to reduce encystment. Single cells were isolated into single wells and videotaped daily. The following was learned by comparing non dividing single cells (ND) which are potentially gametes, and dividing cells (D) which are therefore vegetative cells: 1) 17 of the 92 isolated single cells were ND; 2) ND cells survived for 2-26 d; 3) the size range of ND cells (27-51 x 24-48 pm) overlaps that of D cells (25-55 x 24-49 pm); 4) ND and D cells before their division were longer than wide, and D cells after division were wider than long; 5) before dying, 4 ND cells gained in volume and 7 ND cells lost volume, whereas all D cells gained in volume prior to dividing; 6) on average, #744 cells were longer and wider than #743 cells, but the ranges overlapped. These findings explain why pairing has been infrequently observed between unequal sized gametes, but confirms that A. catenella pairing should be classified as isogamous. Single cells were isolated into single wells. After 5-7 d, ND and D cells were fixed and then labeled with the lectin FITC-Con A. No surface differences in labeling were observed between ND and D cells or between mating type. Labeling was typically pale and diffuse with infrequent bright spots and no flagellar labeling. Differences may be discovered if studies were repeated at lower lectin concentrations, cells were labeled live, or larger sample sizes were used.
Curve Flows in Lagrange-Finsler Geometry, Bi-Hamiltonian Structures and Solitons
Creators: name: Anco, Stephen C.
name: Vacaru, Sergiu I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Differential Geometry (math.DG)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 37K05, 37K10, 37K25, 35Q53, 53B20, 53B40, 53C21, 53C60

description: Methods in Riemann-Finsler geometry are applied to investigate bi-Hamiltonian structures and related mKdV hierarchies of soliton equations derived geometrically from regular Lagrangians and flows of non-stretching curves in tangent bundles. The total space geometry and nonholonomic flows of curves are defined by Lagrangian semisprays inducing canonical nonlinear connections (N-connections), Sasaki type metrics and linear connections. The simplest examples of such geometries are given by tangent bundles on Riemannian symmetric spaces $G/SO(n)$ provided with an N-connection structure and an adapted metric, for which we elaborate a complete classification, and by generalized Lagrange spaces with constant Hessian. In this approach, bi-Hamiltonian structures are derived for geometric mechanical models and (pseudo) Riemannian metrics in gravity. The results yield horizontal/ vertical pairs of vector sine-Gordon equations and vector mKdV equations, with the corresponding geometric curve flows in the hierarchies described in an explicit form by nonholonomic wave maps and mKdV analogs of nonholonomic Schrodinger maps on a tangent bundle.
description: latex 2e 50 pages, the manuscript is a Lagrange-Finsler generalization of the solitonic Riemannian formalism from math-ph/0608024, v3 modified following requests of Editor/Referee of J. Geom. Phys., new references and discussion provided in Conclusion
Elastocaloric signature of nematic fluctuations
Creators: name: Ikeda, Matthias S.
name: Worasaran, Thanapat
name: Rosenberg, Elliott W.
name: Palmstrom, Johanna C.
name: Kivelson, Steven A.
name: Fisher, Ian R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The elastocaloric effect (ECE) is a thermodynamic quantity relating changes in entropy to changes in strain experienced by a material. As such, ECE measurements can provide valuable information about the entropy landscape proximate to strain-tuned phase transitions. For ordered states that break only point symmetries, bilinear coupling of the order parameter with strain implies that the ECE can also provide a window on fluctuations above the critical temperature, and hence, in principle, can also provide a thermodynamic measure of the associated susceptibility. To demonstrate this, we use the ECE to sensitively reveal the presence of nematic fluctuations in the archetypal Fe-based superconductor Ba(Fe$_{1-x}$Co$_{x}$)$_2$As$_2$. By performing these measurements simultaneously with elastoresistivity in a multimodal fashion, we are able to make a direct and unambiguous comparison of these closely related thermodynamic and transport properties, both of which are sensitive to nematic fluctuations. As a result, we have uncovered an unanticipated doping-dependence of the nemato-elastic coupling and of the magnitude of the scattering of low energy quasi-particles by nematic fluctuations -- while the former weakens, the latter increases dramatically with increasing doping.
Μοριακός χαρακτηρισμός και δοκιμές μετάδοσης crini-ιών της τομάτας:
Creators: name: Ορφανίδου, Χρυσούλα Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Crini-ιοί
Μετάδοση με αλευρώδεις
Γενετική παραλλακτικότητα
Crini-viruses
Whitefly transmission
Genetic diversity

description: Οι ιοί του γένους Crinivirus αποτελούν από τους πλέον διαδεδομένους παγκοσμίως και προσβάλλουν οικονομικώς σημαντικές καλλιέργειες, μεταξύ των οποίων και η τομάτα. Στην παρούσα μελέτη, πραγματοποιήθηκε μερικός χαρακτηρισμός του γονιδιώματος δύο crini-ιών, TICV και ToCV, χρησιμοποιώντας απομονώσεις προερχόμενες από τομάτα και αυτοφυή φυτά. Τα αποτελέσματα των αλληλουχήσεων και η κατασκευή φυλογενετικών δέντρων ανέδειξε την παρουσία χαμηλής ενδοειδικής παραλλακτικότητας τόσο στην τομάτα όσο και στα ζιζάνια. Επίσης, πραγματοποιήθηκαν μεταδόσεις του ToCV με τον βιότυπο Q του B. tabaci από/προς φυτά τομάτας, οι οποίες ανέδειξαν την σχετικά υψηλή αποτελεσματικότητα μετάδοσης με τον συγκεκριμένο φορέα. Τέλος, αξιολογήθηκαν πέντε φυτικά είδη (τομάτα, αγριοτοματιά, ζωχός, τραχύ βλήτο, λουβουδιά) για τo ρόλο τους ως εστίες του ToCV με συγκριτικές μεταδόσεις με τον B. tabaci βιότυπο Q. Ο πιο κατάλληλος ξενιστής αποδείχτηκε η τομάτα, και ακολούθησαν η αγριοτοματιά, το τραχύ βλήτο και ο ζωχός, ενώ η λουβουδιά αποδείχτηκε η λιγότερο κατάλληλη πηγή για τον ToCV.
description: Criniviruses are amongst the most commonly found plant viruses worldwide and infect economically important crops, including tomato. In this study, a partial molecular characterization of two criniviruses, TICV and ToCV, was conducted, using isolates originating from tomato and weed species. Sequencing and phylogenetic analysis revealed very low genetic variability both in tomato and weeds. Moreover, transmission studies of ToCV from and to tomato plants, were conducted using B. tabaci biotype Q as whitefly vector, which highlighted the high transmission efficiency of the virus with this vector species. Finally, five hosts (tomato, black nightshade, sowthistle, pigweed, lamb's quarters) of ToCV were evaluated for their suitability as virus sources using comparative transmission experiments with B. tabaci biotype Q. Tomato was found to be the most efficient source of ToCV, followed by black nightshade, sowthistle and pigweed, while lamb's quarters was the least suitable source.
A lower bound for the size of the largest critical sets in Latin squares
Creators: name: Hatami, Hamed
name: Mahmoodian, Ebadollah S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05B15

description: A critical set in an $n \times n$ array is a set $C$ of given entries, such that there exists a unique extension of $C$ to an $n\times n$ Latin square and no proper subset of $C$ has this property. The cardinality of the largest critical set in any Latin square of order $n$ is denoted by $\lcs{n}$. We give a lower bound for $\lcs{n}$ by showing that $\lcs{n} \geq n^2(1-\frac{2 + \ln 2}{\ln n})+n(1+\frac {\ln (8 π)} {\ln n})-\frac{\ln 2}{\ln n}.$
Probing new $U(1)$ gauge symmetries via exotic $Z \to Z' γ$ decays
Creators: name: Michaels, Lisa
name: Yu, Felix
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: New $U(1)$ gauge theories involving Standard Model (SM) fermions typically require additional electroweak fermions for anomaly cancellation. We study the non-decoupling properties of these new fermions, called anomalons, in the $Z-Z'-γ$ vertex function, reviewing the connection between the full model and the effective Wess-Zumino operator. We calculate the exotic $Z \to Z' γ$ decay width in $U(1)_{B-L}$ and $U(1)_B$ models, where $B$ and $L$ denote the SM baryon and lepton number symmetries. For $U(1)_{B-L}$ gauge symmetry, each generation of SM fermions is anomaly free and the exotic $Z \to Z_{BL}' γ$ decay width is entirely induced by intragenerational mass splittings. In contrast, for $U(1)_B$ gauge symmetry, the existence of two distinct sources of chiral symmetry breaking enables a heavy, anomaly-free set of fermions to have an irreducible contribution to the $Z \to Z_B' γ$ decay width. We show that the current LEP limits on the exotic $Z \to Z'_B γ$ decay are weaker than previously estimated, and low-mass $Z'_B$ dijet resonance searches are currently more constraining. We present a summary of the current collider bounds on $U(1)_B$ and a projection for a TeraZ factory on the $Z \to Z_B' γ$ exotic decay, and emphasize how the $Z \to Z' γ$ decay is emblematic of new anomalous $U(1)$ gauge symmetries.
description: 17 pages, 7 Figures
Συμβιβαστική επίλυση με πρωτοβουλία του δικαστηρίου -Δικαστική μεσολάβηση. Έρευνα σχετικά με την επίδραση των συγκεκριμένων μορφών εναλλακτικής επίλυσης διαφορών στην υλοποίηση της αρχής για εύλογη δι:
Creators: name: Καμπούρης, Ιωάννης Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Δικαστικός συμβιβασμός
Δικαστική μεσολάβηση
Αρχή της εύλογης διάρκειας της δίκης
Judicial conciliation
Principle of reasonable duration of trial
Judicial mediation

description: Οι πρόσφατες νομοθετικές πρωτοβουλίες στο πεδίο του αστικού δικονομικού δικαίου (ν. 3994/2011, ν. 4055/2012) διεύρυναν τους ορίζοντες και έφεραν νέες προοπτικές στο σύστημα απονομής της ελληνικής δικαιοσύνης. Προς την κατεύθυνση της υλοποίησης εκσυγχρονιστικών τάσεων κινήθηκαν η σε βάθος τροποποίηση του άρθρου 233 για την απόπειρα συμβιβασμού με πρωτοβουλία του δικαστηρίου και η εισαγωγή του άρθρου 214Β για τη δικαστική μεσολάβηση. Εκ πρώτης όψεως, στόχος του δικονομικού νομοθέτη είναι η ενίσχυση του υφιστάμενου γόνιμου κανονιστικού πλαισίου (π.χ. αρ. 214Α, 293, 867 επ.) για επίλυση μιας διαφοράς με έναν άλλον τρόπο απ’ ότι προσφέρει η παραδοσιακή μορφή της δικαστικής απόφασης. Είναι πλέον ευδιάκριτη, λοιπόν, η πρόθεση του νομοθέτη για ενδυνάμωση των εναλλακτικών μορφών επίλυσης μιας διαφοράς. Η συγκεκριμένη μελέτη επιχειρεί την ερμηνευτική ανάλυση των άρθρων 233 §§2-4 και 214Β. Προτού, όμως, λάβει χώρα η προσέγγιση αυτών των διατάξεων, είναι χρήσιμο να γίνει αναφορά στις έννοιες που αποτυπώνονται στα εν λόγω άρθρα. Τέλος, επειδή συχνά γίνεται λόγος ότι οι εναλλακτικές μορφές συμβάλλουν στην επίτευξη του στόχου για εύλογη διάρκεια της δίκης, ερευνάται στο τρίτο κεφάλαιο της μελέτης κατά πόσο οι υπό εξέταση διατάξεις κρίνονται πρόσφορες για να ικανοποιήσουν έναν τέτοιο σκοπό.
description: Recent legislative initiatives in the field of civil procedural law (Law 3994/2011, Law 4055/2012) have broadened the horizons and brought new perspectives in the Greek justice system. Towards the realization of modernization trends initiated a thorough amendment of Article 233 for the attempted conciliation with the court's initiative and the introduction of Article 214b for judicial mediation. Prima facie purpose of procedural legislature is to strengthen the existing fruitful regulatory framework (eg No. 214A, 293, 867 et seq) to resolve a dispute with another way than that offered by the traditional form of judgment. It is now easy to see, therefore, the intention of the legislature to strengthen alternative forms of resolving a dispute. This study attempts the interpretative analysis of Articles 233 § § 2-4 and 214b. However, prior to the interpretative approach of the aforementioned provisions, it would be useful for a reference to the notions that are reflected in them to be made. Finally, due to the fact that it is often mentioned that alternative forms of dispute resolution contribute to achieving a reasonable duration of a trial in the third chapter of the current thesis it is explored whether the provisions in question are considered adequate to achieve such a purpose.
Harnessing the Population Statistics of Subhalos to Search for Annihilating Dark Matter
Creators: name: Somalwar, Jean J.
name: Chang, Laura J.
name: Mishra-Sharma, Siddharth
name: Lisanti, Mariangela
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The Milky Way's dark matter halo is expected to host numerous low-mass subhalos with no detectable associated stellar component. Such subhalos are invisible unless their dark matter annihilates to visible states such as photons. One of the established methods for identifying candidate subhalos is to search for individual unassociated gamma-ray sources with properties consistent with the dark matter expectation. However, robustly ruling out an astrophysical origin for any such candidate is challenging. In this work, we present a complementary approach that harnesses information about the entire population of subhalos---such as their spatial and mass distribution in the Galaxy---to search for a signal of annihilating dark matter. Using simulated data, we show that the collective emission from subhalos can imprint itself in a unique way on the statistics of observed photons, even when individual subhalos may be too dim to be resolved on their own. Additionally, we demonstrate that, for the models we consider, the signal can be identified even in the face of unresolved astrophysical point-source emission of extragalactic and Galactic origin. This establishes a new search technique for subhalos that is complementary to established methods, and that could have important ramifications for gamma-ray dark matter searches using observatories such as the Fermi Large Area Telescope and the Cherenkov Telescope Array.
description: 17+1 pages, 6+1 figures
The mass distribution of quark matter
Creators: name: Biro, T. S.
name: Levai, P.
name: Van, P.
name: Zimanyi, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze lattice QCD results on the equation of state in terms of infinitely many non-interacting massive ideal gas components. We find that the entire pressure-temperature curve can be described by a temperature independent mass distribution at vanishing chemical potential. We collect strong indications for a mass gap in this distribution, conjectured to be related confinement.
description: 4 pages 3 figures LateX
Protein interaction abnormalities in leukaemia: integrative systems biology approach from network to 3D molecular structures
Creators: name: Chung, Sun Sook
name: N Shaun B Thomas
name: Fraternali, Franca
Publisher: name: F1000Research
Year: 2015

description: Systems biology has played a significant role in boosting high-throughput biological applications. This is achieved not only by systematic integration of new incoming biological information, but also by bridging gaps between a wide range of large-scale biological data with the aim of rationalising their functions. In particular, protein-protein interaction networks (PPINs) have been widely applied to discover novel functional associations playing a crucial role in fundamental biological processes. To understand governing rules of PPINs, our recent study highlighted short loop network motifs as an essential topological feature of PPINs in extracting meaningful biological functions (Chung et al., 2015). One of these motifs was selected as contained proteins enriched in specific cellular functions such as mRNA metabolic processing and cell cycle activity.

We will apply our integrative systems biology approach to investigate molecular implications of patient-specific variations in acute myeloid leukaemia (AML) by using PPINs and 3D structural complexes. Human PPINs from high-confidence sources are integrated with experimentally verified proteomic analysis of human T lymphocytes during cell-cycle entry performed in our laboratory (Orr et al., 2012), AML related gene mutations extracted from COSMIC (Forbes et al., 2011) and the corresponding 3D protein structures (Lu et al., 2013). The functional effects of the mutations are analysed in PPINs by short loop profiling, predicted by structural modelling and docking, and probed by targeted siRNA silencing experiments.
Ψυχομετρική Αξιολόγηση Ερωτηματολογίων Γενικών Αξιών στη Φυσική Δραστηριότητα: Εμπειρική μελέτη σε έφηβους μαθητές:
Creators: name: Γυμνοπούλου, Βασιλική Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Αξίες
Σχολικό περιβάλλον
Ψυχομετρικά χαρακτηριστικά ερωτηματολογίων
Values
Environmental school
Psychometric characteristics of questionnaires

description: Οι αξίες αποτελούν σημαντικό κομμάτι στην εκπαιδευτική έρευνα. Το σχολείο διαθέτει ευρύτερα περιθώρια για να διδάξει αξίες και να ενισχύσει την ηθική ανάπτυξη των παιδιών. Η παρούσα εργασία αφορά την προσαρμογή και την εξέταση των ψυχομετρικών χαρακτηριστικών των ερωτηματολογίων της Κλίμακας Γενικών Αξιών, του Ερωτηματολογίου του Προφίλ Αξιών και της Κλίμακας Αξιών Ζωής στη φυσική αγωγή. Έγιναν επιβεβαιωτικές στατιστικές αναλύσεις για την εξέταση της δομικής εγκυρότητας των κλιμάκων. Η Κλίμακα Αξιών Ζωής εμφάνισε πιο ικανοποιητικούς δείκτες αξιοπιστίας και εγκυρότητας από την Κλίμακα Γενικών Αξιών και από το Ερωτηματολόγιο του Προφίλ Αξιών και αποτελεί ένα χρήσιμο εργαλείο με θεωρητικό υπόβαθρο για τη μελέτη των αξιών στο χώρο γενικά της εκπαίδευσης και ειδικότερα της φυσικής αγωγής.
description: Values are important part in educational research. The school can teach values to enhance the moral development of the pupils. The purpose of the present study was to examine the psychometric properties of the Schwartz Value Survey, the Portrait Values Questionnaire and the Life Values Inventory in physical education context. Confirmatory statistical analyses were used to examine the construct validity of the scales. The Life Values Inventory showed more satisfactory reliability and validity indices compared to the Schwartz Value Survey and the Portrait Values Questionnaire. It is concluded that this theory-based instrument can be used for diagnostic purposes in education and especially in physical education.
On the size of the minimum critical set of a Latin square
Creators: name: Ghandehari, Mahya
name: Hatami, Hamed
name: Mahmoodian, Ebadollah S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05B15

description: A critical set in an $n \times n$ array is a set $C$ of given entries, such that there exists a unique extension of $C$ to an $n\times n$ Latin square and no proper subset of $C$ has this property. For a Latin square $L$, $\scs{L}$ denotes the size of the smallest critical set of $L$, and $\scs{n}$ is the minimum of $\scs{L}$ over all Latin squares $L$ of order $n$. We find an upper bound for the number of partial Latin squares of size $k$ and prove that $$n^2-(e+o(1))n^{10/6} \le \max \scs{L} \le n^2-\frac{\sqrtπ}{2}n^{9/6}.$$ % This improves a result of N. Cavenagh (Ph.D. thesis, The University of Queensland, 2003) and disproves one of his conjectures. Also it improves the previously known lower bound for the size of the largest critical set of any Latin square of order $n$.
Comparison of Productivity of Different Breeds of Meat Goats Under Low-to-Moderate-Input Systems in the United States
Creators: name: Browning, Richard
name: Leite-Browning, Maria L.
name: Browning, Richard
name: Leite-Browning, Maria L.
Publisher: name: Unknown
Year: 2020
Subjects: subject: Livestock Production/Industries
subject: Production Economics
subject: Productivity
subject: Breeds
subject: Meat Goat Breeds
subject: Input Systems

description: Boer and Kiko goats were imported in the 1990s to enhance the productivity of the US base population of Spanish meat goats. Successful breed introductions require adaptation to the destination environment. Well-planned, low-input management is a good route to meat goat enterprise profitability using proper goat genetics. Reproduction drives profit more than growth and carcass traits. Results of breed evaluation studies on doe reproductive and health traits, the Boer goat influence tended to be negative compared with Kiko and Spanish goat influences. Reduced doe herd reproductive output suggests reduced enterprise profitability. Differences in growth or carcass traits among sire breeds have not consistently favored any particular breed. Boer goat genetics improved visual conformation, which increases market value. Improved visual appraisal has not translated into enhancements for objectively measured carcass traits. Proper breed selection and use in meat goat mating systems are important for enhanced doe herd productivity and profitability in low-input, limited-resource operations.