cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Genetic variation among populations of Pissodes strobi (white pine weevil) reared from Picea and pinus hosts as inferred from RAPD markers
Creators: name: Lewis, Kornelia G.
Publisher: name: University of British Columbia
Year: 2009

description: The white pine weevil, Pissodes strobi, is an insidious pest of spruce regeneration in British Columbia and has forced forest managers to virtually eliminate the planting of Sitka spruce in coastal B.C. This leader weevil is capable of feeding on a wide variety of conifers and in B.C., P. strobVs preferred hosts are species of spruce. This attack pattern is counter to that observed in eastern Canada where species of pine are the major hosts attacked. The RAPD marker technique was used to examine genetic variation within and among populations of P. strobi across it's range in B.C. This was done to assess population structure and to determine if P. strobi populations are distinct relative to host tree species. Weevils were collected from a total of 12 populations: five Sitka spruce (three of which were from Vancouver Island and two from the mainland), three white spruce and two Engelmann spruce from the B.C. interior and two Jack pine (obtained from Ontario) populations. The bulked DNA technique was initially explored in an attempt to identify genetic markers specific to the Y chromosome (these in essence being haploid markers). Six putative male specific markers were tentatively identified. However, dot-blots failed to confirm the genomic specificity of these markers so the genetic variation was assessed using RAPD markers generated from diploid DNA. From each population DNA was extracted from 30 individuals (15 males; 15 females). Ten different primers were used with each of the 360 DNA extracts and 69 polymorphic RAPD markers were made available for analysis. Since there was no general consensus as to how to analyze RAPD data, markers were used to estimate allele frequencies as well as being treated as simple binary type data (presence or absence of band). Population genetic analyses, based on the allele frequency data, included examining the percentage of polymorphic loci, mean expected heterozygosity, Wright's F-statistics, and cluster analyses (three different methods tested with three different genetic distances/similarities). Multivariate analyses was performed with the binary coded data and included principal component analysis as well as parametric and nonparametric discriminant procedures. Both multivariate and population genetic analyses indicated the following: 1) populations of P.strobi from Sitka spruce on Vancouver Island are distinct from populations obtained from mainland B.C. Sitka spruce; 2) populations of P. strobi collected from Engelmann and white spruce form a distinct complex thus, for management purposes investigators should recognize three groups of P. strobi in B.C. and; 3) P. strobi reared from the eastern host, Jack pine, are most similar to the Engelmann/white spruce complex.
New Inflation in Waterfall Region
Creators: name: Khan, Niamat Ullah
name: Ijaz, Nadir
name: Rehman, Mansoor Ur
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We introduce a class of new inflation models within the waterfall region of a generalized hybrid inflation framework. The initial conditions are generated in the valley of hybrid preinflation. Both single-field and multi-field inflationary scenarios have been identified within this context. A supersymmetric realization of this scenario can successfully be achieved within the tribrid inflation framework. To assess the model's viability, we calculate the predictions of inflationary observables using the $δN$ formalism, demonstrating excellent agreement with the most recent Planck data. Furthermore, this model facilitates successful reheating and nonthermal leptogenesis, with the matter-field component of the inflaton identified as a sneutrino.
description: 15 pages, 9 figures
Zero-sum flows for Steiner systems
Creators: name: Akbari, Saieed
name: Maimani, Hamid Reza
name: Majd, Leila Parsaei
name: Wanless, Ian M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05B05, 05B20, 05C21

description: Given a $t$-$(v, k, λ)$ design, $\mathcal{D}=(X,\mathcal{B})$, a zero-sum $n$-flow of $\mathcal{D}$ is a map $f : \mathcal{B}\longrightarrow \{\pm1,\ldots, \pm(n-1)\}$ such that for any point $x\in X$, the sum of $f$ over all blocks incident with $x$ is zero. For a positive integer $k$, we find a zero-sum $k$-flow for an STS$(u w)$ and for an STS$(2v+7)$ for $v\equiv 1~(\mathrm{mod}~4)$, if there are STS$(u)$, STS$(w)$ and STS$(v)$ such that the STS$(u)$ and STS$(v)$ both have a zero-sum $k$-flow. In 2015, it was conjectured that for $v>7$ every STS$(v)$ admits a zero-sum $3$-flow. Here, it is shown that many cyclic STS$(v)$ have a zero-sum $3$-flow. Also, we investigate the existence of zero-sum flows for some Steiner quadruple systems.
Morphological segmentation of hyperspectral images
Creators: name: Noyel, Guillaume
name: Angulo, Jesus
name: Jeulin, Dominique
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: The present paper develops a general methodology for the morphological segmentation of hyperspectral images, i.e., with an important number of channels. This approach, based on watershed, is composed of a spectral classification to obtain the markers and a vectorial gradient which gives the spatial information. Several alternative gradients are adapted to the different hyperspectral functions. Data reduction is performed either by Factor Analysis or by model fitting. Image segmentation is done on different spaces: factor space, parameters space, etc. On all these spaces the spatial/spectral segmentation approach is applied, leading to relevant results on the image.
Giant Pulses -- the Main Component of the Radio Emission of the Crab Pulsar
Creators: name: Popov, M. V.
name: Soglasnov, V. A.
name: Kondratiev, V. I.
name: Kostyuk, S. V.
name: Ilyasov, Yu. P.
name: Oreshko, V. V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The paper presents an analysis of dual-polarization observations of the Crab pulsar obtained on the 64-m Kalyazin radio telescope at 600 MHz with a time resolution of 250 ns. A lower limit for the intensities of giant pulses is estimated by assuming that the pulsar radio emission in the main pulse and interpulse consists entirely of giant radio pulses; this yields estimates of 100 Jy and 35 Jy for the peak flux densities of giant pulses arising in the main pulse and interpulse, respectively. This assumes that the normal radio emission of the pulse occurs in the precursor pulse. In this case, the longitudes of the giant radio pulses relative to the profile of the normal radio emission turn out to be the same for the Crab pulsar and the millisecond pulsar B1937+21, namely, the giant pulses arise at the trailing edge of the profile of the normal radio emission. Analysis of the distribution of the degree of circular polarization for the giant pulses suggests that they can consist of a random mixture of nanopulses with 100% circular polarization of either sign, with, on average, hundreds of such nanopulses within a single giant pulse.
description: 13 pages, 6 figures (originally published in Russian in Astronomicheskii Zhurnal, 2006, vol. 83, No. 1, pp. 62-69) translated by Denise Gabuzda
A DSP shared is a DSP earned: HLS Task-Level Multi-Pumping for High-Performance Low-Resource Designs
Creators: name: Brignone, Giovanni
name: Lazarescu, Mihai T.
name: Lavagno, Luciano
Publisher: name: arXiv
Year: 2023
Subjects: subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences

description: High-level synthesis (HLS) enhances digital hardware design productivity through a high abstraction level. Even if the HLS abstraction prevents fine-grained manual register-transfer level (RTL) optimizations, it also enables automatable optimizations that would be unfeasible or hard to automate at RTL. Specifically, we propose a task-level multi-pumping methodology to reduce resource utilization, particularly digital signal processors (DSPs), while preserving the throughput of HLS kernels modeled as dataflow graphs (DFGs) targeting field-programmable gate arrays. The methodology exploits the HLS resource sharing to automatically insert the logic for reusing the same functional unit for different operations. In addition, it relies on multi-clock DFG s to run the multi-pumped tasks at higher frequencies. The methodology scales the pipeline initiation interval (II) and the clock frequency constraints of resource-intensive tasks by a multi-pumping factor (M). The looser II allows sharing the same resource among M different operations, while the tighter clock frequency preserves the throughput. We verified that our methodology opens a new Pareto front in the throughput and resource space by applying it to open-source HLS designs using state-of-the-art commercial HLS and implementation tools by Xilinx. The multi-pumped designs require up to 40% fewer DSP resources at the same throughput as the original designs optimized for performance (i.e., running at the maximum clock frequency) and achieve up to 50% better throughput using the same DSP s as the original designs optimized for resources with a single clock.
Generalized Sagnac Effect
Creators: name: Wang, Ruyong
name: Zheng, Yi
name: Yao, Aiping
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: Experiments were conducted to study light propagation in a light waveguide loop consisting of linearly and circularly moving segments. We found that any segment of the loop contributes to the total phase difference between two counterpropagating light beams in the loop. The contribution is proportional to a product of the moving velocity v and the projection of the segment length Deltal on the moving direction, Deltaphi=4pivDeltal/clambda. It is independent of the type of motion and the refractive index of waveguides. The finding includes the Sagnac effect of rotation as a special case and suggests a new fiber optic sensor for measuring linear motion with nanoscale sensitivity.
description: 3 pages (including 3 figures)
Pressure Effect on the superconducting properties of LaO_{1-x}F_{x}FeAs(x=0.11) superconductor
Creators: name: Lu, W.
name: Yang, J.
name: Dong, X. L.
name: Ren, Z. A.
name: Che, G. C.
name: Zhao, Z. X.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Diamagnetic susceptibility measurements under high hydrostatic pressure (up to 1.03 GPa) were carried out on the newly discovered Fe-based superconductor LaO_{1-x}F_{x}FeAs(x=0.11). The transition temperature T_c, defined as the point at the maximum slope of superconducting transition, was enhanced almost linearly by hydrostatic pressure, yielding a dT_c/dP of about 1.2 K/GPa. Differential diamagnetic susceptibility curves indicate that the underlying superconducting state is complicated. It is suggested that pressure plays an important role on pushing low T_c superconducting phase toward the main (optimal) superconducting phase.
description: 7 pages, 4 figures
TSV-integrated Surface Electrode Ion Trap for Scalable Quantum Information Processing
Creators: name: Zhao, P.
name: Likforman, J. -P.
name: Li, H. Y.
name: Tao, J.
name: Henner, T.
name: Lim, Y. D.
name: Seit, W. W.
name: Tan, C. S.
name: Guidoni, Luca
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this study, we report the first Cu-filled through silicon via (TSV) integrated ion trap. TSVs are placed directly underneath electrodes as vertical interconnections between ion trap and a glass interposer, facilitating the arbitrary geometry design with increasing electrodes numbers and evolving complexity. The integration of TSVs reduces the form factor of ion trap by more than 80%, minimizing parasitic capacitance from 32 to 3 pF. A low RF dissipation is achieved in spite of the absence of ground screening layer. The entire fabrication process is on 12-inch wafer and compatible with established CMOS back end process. We demonstrate the basic functionality of the trap by loading and laser-cooling single 88Sr+ ions. It is found that both heating rate (17 quanta/ms for an axial frequency of 300 kHz) and lifetime (~30 minutes) are comparable with traps of similar dimensions. This work pioneers the development of TSV-integrated ion traps, enriching the toolbox for scalable quantum computing.
The Central Engines of Narrow-Line Seyfert 1 Galaxies
Creators: name: Ryan, C. J.
name: De Robertis, M. M.
name: Virani, S.
name: Laor, A.
name: Dawson, P. C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (abridged) It has been suggested that Narrow-Line Seyfert 1 (NLS1) galaxies are evolutionarily young objects, powered by the accretion of gas onto central black holes that are lower in mass than those found in typical broad-line Seyferts. We explore this hypothesis through the analysis of high-spatial resolution, near-IR imaging data for a sample of 11 NLS1s. By employing the correlation between black-hole mass and host galaxy bulge luminosity, we determine the mean black-hole mass for our sample to be, in solar units, = 7.9. Using the correlation between the size of the broad-line region and the monochromatic continuum luminosity, we obtain black-hole mass estimates under the assumption that the emission-line gas is in virial equilibrium. The mean black-hole mass derived from this relation is = 6.4. We explore possible causes for this discrepancy and the ramifications for our understanding of the role played by NLS1s in AGN evolution. Because numerical simulations constrain the start of the AGN duty cycle to a time shortly after a significant gravitational interaction, we examine the morphology and near-IR bulge colors of the NLS1 sample for evidence of recent encounters. The mean bulge color is found to be redder than that of both a matched sample of non-active galaxies and published estimates for broad-line Seyferts. The source of the unusual bulge colors may be an excess of flux, peaking at around 2.2 micron, that has been detected near the centers of some NLS1s such as Mrk 1239. No evidence is found for light asymmetries or an extra stellar component that would indicate NLS1s are young objects. Finally, we postulate that there may be some interesting lines of circumstantial evidence suggesting that secular processes may be relevant in NLS1s.
description: 32 pages, 16 figures, accepted by ApJ
Modelling finger propagation in elasto-rigid channels
Creators: name: Fontana, J. V.
name: Juel, A.
name: Bergemann, N.
name: Heil, M.
name: Hazel, A. L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences
subject: 76T10

description: We conduct a theoretical study of a two-phase-fluid-structure interaction problem in which air is driven at constant volume flux into a liquid-filled Hele-Shaw channel whose upper boundary is an elastic sheet. A depth-averaged model in the frame of reference of the advancing air-liquid interface is used to investigate the steady and unsteady interface propagation modes via numerical simulation. In slightly collapsed channels, the steadily-propagating interface adopts a shape that is similar to the classic Saffman--Taylor finger in rigid Hele-Shaw cells. As the level of initial collapse increases the induced gradients in channel depth alter the morphology of the propagating finger and promote a variety of instabilities from tip-splitting to small-scale fingering on the curved interface, in qualitative agreement with experiments. The model has a complex solution structure with a wide range of stable and unstable, steady and time-periodic modes, many of which have similar driving pressures. We find good quantitative agreement between our model and the experimental data of Ducloué et al. (J. Fluid Mech. vol. 819, 2017, p 121) for the finger width, sheet profile and finger pressure, provided that corrections to account for the presence of liquid films on the upper and lower walls of the channel are included in the model.
description: 23 pages, 12 figures
An analysis of the North American specifiers of structural materials in nonresidential construction
Creators: name: Kozak, Robert A.
Publisher: name: University of British Columbia
Year: 2009

description: An assessment of the market environment for wood products as a structural material in nonresidential buildings four storeys or less has been undertaken. This was accomplished by performing extensive marketing research on the specifiers of building materials in the North American nonresidential market — namely, architects and structural engineers. It is hoped that information obtained in this analysis will form the basis of a comprehensive market assessment which will, in turn, facilitate the development and implementation of distinctive marketing strategies aimed at improving the market situation for wood products in the nonresidential sector. The method of mail questionnaires was utilized to sample slightly fewer than 6,000 architects and structural engineers across North America. Of the design population that were qualified to respond to the survey, 22.06% did so. This response rate is sufficient to make valid population inferences. In fact, given the vast quantities of information that were collected in the questionnaire, it is considered high. Topics in the survey included building design, structural material use (with special attention to wood products), education, promotion, the design process, environmental issues, and personal information. While the focus was on ascertaining the market position for wood in the nonresidential sector, every effort was made to gauge the attitudes and perceptions of specifiers on a wide variety of subjects pertaining to this type of design. Results of this analysis clearly show that the market position for wood products in the nonresidential sector is, indeed, unfavourable. This is despite high levels of wood use in three of the more uncommon applications. In every other nonresidential building, especially the larger-scale structures, wood use ranks lowest. That said, the market shares reported for wood products here are relatively high, which is due, in part, to the presence of residential buildings in much of the analysis. Although wood has several benefits (e.g., aesthetics, simplicity, low cost), these seem to be outweighed by the many concerns that specifiers have towards its use in a nonresidential context (e.g., lack of fire resistance and permanence, inconsistent quality and pricing). As such, materials like steel, concrete, and masonry are often used in its place. Some recommendations for overcoming these barriers to wood use in nonresidential construction are offered here. These generally take on the form of specifically tailored marketing strategies aimed at increasing the shares of wood products in segments where wood use varies.
Isospin dependence of relative yields of $K^+$ and $K^0$ mesons at 1.528 AGeV
Creators: name: Lopez, X.
name: Kim, Y. J.
name: al., N. Herrmann et
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Results on $K^+$ and $K^0$ meson production in $^{96}_{44}$Ru + $^{96}_{44}$Ru and $^{96}_{40}$Zr + $^{96}_{40}$Zr collisions at a beam kinetic energy of 1.528$A$ GeV, measured with the FOPI detector at GSI-Darmstadt, are investigated as a possible probe of isospin effects in high density nuclear matter. The measured double ratio ($K^+/K^0$)$_{Ru}$/($K^+/K^0$)$_{Zr}$ is compared to the predictions of a thermal model and a Relativistic Mean Field transport model using two different collision scenarios and under different assumptions on the stiffness of the symmetry energy. We find a good agreement with the thermal model prediction and the assumption of a soft symmetry energy for infinite nuclear matter while more realistic transport simulations of the collisions show a similar agreement with the data but also exhibit a reduced sensitivity to the symmetry term.
description: 5 pages, 3 figures. accepted for publication in Phys. Rev. C
Οι Κατάλογοι Παθημάτων στις Πρωτοπαύλειες Επιστολές: Θεολογική Προσέγγιση
Creators: name: Κουκότσικα, Παρασκευή Ζήση
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Απόστολος Παύλος
Κατάλογοι παθημάτων
Ρητορική
Apostle Paul
Catalogues of Sufferings
Rhetoric

description: Σκοπός της διατριβής ήταν να διερευνήσουμε τους καταλόγους παθημάτων των πρωτοπαύλειων επιστολών. Στο πρώτο μέρος εξετάσαμε τους καταλόγους παθημάτων στην αρχαιότητα και τη σχέση τους με τη Ρητορική αποσκοπώντας να αναδείξουμε το λόγο για τον οποίο ο απόστολος τους χρησιμοποιεί στις επιστολές του. Στο δεύτερο μέρος ερευνήσαμε τους στόχους που εξυπηρετούν οι κατάλογοι στην κάθε επιστολή και ανιχνεύσαμε τις θεολογικές τους προεκτάσεις. Τέλος, η εργασία μας ολοκληρώθηκε με τα τελικά συμπεράσματα, όπου διαπιστώσαμε ότι ο Παύλος χρησιμοποιεί τους καταλόγους παθημάτων, επειδή ήταν ένα γνωστό ρητορικό μέσο στην εποχή του, για να εξυπηρετήσει τόσο τους διδακτικούς όσο και τους απολογητικούς του στόχους. Διαπιστώσαμε ότι δίνει σταυρική διάσταση στα παθήματά του διακηρύσσοντας ότι η συμμετοχή στο Σταυρό του Κυρίου αποτελεί συμμετοχή και στην Ανάσταση του και πηγή από την οποία αντλεί δύναμη, για να υπερνικήσει τα παθήματά του είναι η δύναμη του Ιησού Χριστού. Ταυτόχρονα καταλήξαμε στο συμπέρασμα ότι μέσω των καταλόγων ο Παύλος υπερασπίζεται την αποστολικότητά του και παράλληλα προβάλλει ένα νέο πρότυπο, το Χριστό.
description: The aim of the present thesis is to investigate the catalogues of sufferings at the first-Pauline epistles. In the first part of thesis we examined the catalogues of sufferings in antiquity and their relationship with the rhetoric aiming to highlight the reason why the Apostle uses them in his epistles. In the second part we investigated the goals that serve the catalogues in each letter and detected their theological implications. Our thesis is completed with the final conclusions as we have seen that Paul uses catalogues of sufferings, because it was a familiar rhetorical instrument in his time to serve both his teaching and his apologetic goals. We came to conclusion that the Apostle gives cruciform dimension in his sufferings proclaiming that participation in the Cross of Christ is participation in the Resurrection and the source from which he draws strength to overcome the sufferings is the power of Jesus Christ. At the same time we saw that through catalogues Paul defends his apostleship and raises a new standard, the Christ.
Anharmonicity and self-energy effects of the E2g phonon in MgB2
Creators: name: Mialitsin, A.
name: Dennis, B. S.
name: Zhigadlo, N. D.
name: Karpinski, J.
name: Blumberg, G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present a Raman scattering study of the E2g phonon anharmonicity and of superconductivity induced self-energy effects in MgB2 single crystals. We show that anharmonic two phonon decay is mainly responsible for the unusually large linewidth of the E2g mode. We observe ~ 2.5 % hardening of the E2g phonon frequency upon cooling into the superconducting state and estimate the electron-phonon coupling strength associated with this renormalization.
description: 4 pages, 3 figures, accepted to PRB
A practical approach to computing Lyapunov exponents of renewal and delay equations
Creators: name: Breda, Dimitri
name: Liessi, Davide
Publisher: name: arXiv
Year: 2023
Subjects: subject: Numerical Analysis (math.NA)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We propose a method for computing the Lyapunov exponents of renewal equations (delay equations of Volterra type) and of coupled systems of renewal and delay differential equations. The method consists in the reformulation of the delay equation as an abstract differential equation, the reduction of the latter to a system of ordinary differential equations via pseudospectral collocation, and the application of the standard discrete QR method. The effectiveness of the method is shown experimentally and a MATLAB implementation is provided.
Constraints on Hořava-Lifshitz gravity from GRB 170817A
Creators: name: Zhang, Tao
name: Shu, Fu-Wen
name: Tang, Qing-Wen
name: Du, Dong-Hui
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In this work we focus on a toy model: (3+1)-dimensional Hořava-Lifshitz gravity coupling with an anisotropic electromagnetic (EM) field which is generated through a Kaluza-Klein reduction of a (4+1)-dimensional Hořava-Lifshitz gravity. This model exhibits a remarkable feature that it has the same velocity for both gravitational and electromagnetic waves. This feature makes it possible to restrict the parameters of the theory from GRB 170817A. In this work we use this feature to discuss possible constraints on the parameter $β$ in the theory, by analyzing the possible Lorentz invariance violation effect of the GRB 170817A. This is achieved by analyzing potential time delay of gamma-ray photons in this event. It turns out that it places a stringent constraint on this parameter. In the most ideal case, it gives $|1-\sqrtβ|
description: 21 pages, 2 tables. Accepted for publication in EPJC
The algebra of harmonic functions for a matrix-valued transfer operator
Creators: name: Dutkay, Dorin Ervin
name: Roysland, Kjetil
Publisher: name: arXiv
Year: 2006
Subjects: subject: Functional Analysis (math.FA)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37C40, 37A55, 42C40

description: We analyze matrix-valued transfer operators. We prove that the fixed points of transfer operators form a finite dimensional $C^*$-algebra. For matrix weights satisfying a low-pass condition we identify the minimal projections in this algebra as correlations of scaling functions, i.e., limits of cascade algortihms.
description: v2, corrected some typos
Standard and SUSY Higgs production at the LHC
Creators: name: Harlander, Robert
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recent theoretical developments concerning Higgs production at the Large Hadron Collider are reviewed, both in the Standard Model and in the MSSM. Emphasis is put on the inclusive and exclusive cross sections for gluon fusion, as well as on the associated production with bottom quarks.
description: 9 pages, 3 figures (4 ps-files). Contribution to the proceedings of WHEPP-9 (Jan 1-14, 2006, Bhubaneswar, India)
Symmetry-Protected Scattering in Non-Hermitian Linear Systems
Creators: name: Jin, L.
name: Song, Z.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Symmetry plays fundamental role in physics and the nature of symmetry changes in non-Hermitian physics. Here the symmetry-protected scattering in non-Hermitian linear systems is investigated by employing the discrete symmetries that classify the random matrices. The even-parity symmetries impose strict constraints on the scattering coefficients: the time-reversal (C and K) symmetries protect the symmetric transmission or reflection; the pseudo-Hermiticity (Q symmetry) or the inversion (P) symmetry protects the symmetric transmission and reflection. For the inversion-combined time-reversal symmetries, the symmetric features on the transmission and reflection interchange. The odd-parity symmetries including the particle-hole symmetry, chiral symmetry, and sublattice symmetry cannot ensure the scattering to be symmetric. These guiding principles are valid for both Hermitian and non-Hermitian linear systems. Our findings provide fundamental insights into symmetry and scattering ranging from condensed matter physics to quantum physics and optics.
description: 8 pages, 3 figures + 5 pages, 1 figure; to appear in Chin. Phys. Lett. as Express Letter
Η ποινική αντιμετώπιση των πολύνεκρων δυστυχημάτων στο πλαίσιο της συγκοινωνίας: το παράδειγμα της υδάτινης συγκοινωνίας
Creators: name: Καρατζά, Αναστασία Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: διατάραξη συγκοινωνίας
ενδεχόμενος δόλος
ναυάγιο
transport disruption
dolus eventualis
shipwreck

description: Σκοπός της παρούσας εργασίας ήταν η μελέτη της ποινικής αντιμετώπισης των πολύνεκρων δυστυχημάτων κατά τη διεξαγωγή της συγκοινωνίας. Εξετάσαμε την προβληματική της διάκρισης του ενδεχόμενου δόλου από την ενσυνείδητη αμέλεια και την νομοθετική τροποποίηση του έτους 2005. Στη συνέχεια παρουσιάσαμε το ενδεδειγμένο νομικό πλαίσιο για την αντιμετώπιση αυτών των περιπτώσεων, ειδικότερα τα άρθρα 290 και 291 Π.Κ.. Ακόμη, προχωρήσαμε σε κατανομή της ποινικής ευθύνης στα πρόσωπα που σχετίζονται με τη διεξαγωγή της υδάτινης συγκοινωνίας και αναφερθήκαμε στο σχέδιο του νέου ελληνικού Ποινικού Κώδικα. Τέλος αναφερθήκαμε στην ελληνική νομολογία, με έμφαση στο ναυάγιο του πλοίου Σάμινα, οδηγηθήκαμε σε συμπεράσματα ως προς την ποινική αντιμετώπιση των πολύνεκρων δυστυχημάτων στην υδάτινη συγκοινωνία και παραθέσαμε δύο παραρτήματα, με ένα ευρύτερο νομικό πλαίσιο για τις θαλάσσιες μεταφορές και με σοβαρά ναυτικά δυστυχήματα στην Ελλάδα και τον κόσμο.
description: The aim of the present dissertation was the study of the penal treatment of fatal accidents during conduct of transport in general, with a special emphasis on sea transport. Firstly, the problematique of the distinction between “dolus eventualis” and conscientious negligence, along with the legislative modification which took place during the year of 2005 is examined. Subsequently, the appropriate legal framework for the settlement of such cases, especially the articles no. 290 and 291 of the Greek Penal Code, is presented. Furthermore, criminal liability was allocated to the people related to sea transport, whilst reference was made to the current Draft Penal Code. Finally, a necessary reference to Greek jurisprudence with emphasis on the shipwreck of Samina is made. The dissertation ends with some concluding remarks about the penal treatment of the fatal accidents during conduct of sea transport. Two Appendices containing a more general legal framework of sea transport and serious maritime accidents both in Greece and worldwide, are attached.
Effect of tensile stresses on bainitic isothermal transformation
Creators: name: Su, T.
name: Veaux, M.
name: Aeby-Gautier, E.
name: Denis, S.
name: Brien, Valerie
name: Archambault, P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The effects of tensile stresses on isothermal bainitic transformation were studied in the case of a 35MV7 steel. The modification of transformation kinetics and the presence of transformation plasticity is shown in a first step. Furthermore the effect of stress on the morphological modifications of the ferrite laths is illustrated. The role of the stress on these changes is analysed.
Η ταυτότητα των χριστιανών της προς Γαλάτας επιστολής της Καινής διαθήκης: κοινωνικό-ιστορική ερμηνευτική προσέγγιση
Creators: name: Αλμπανάκη, Μαρία Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Ταυτότητα
Απόστολος Παύλος
Επιστολή
Galatians
identity
christians

description: Σκοπός της μεταπτυχιακής μελέτης ήταν η έρευνα και η μελέτη της ταυτότητας των παραληπτών της επιστολής του αποστόλου Παύλου προς τις κοινότητας της Γαλατίας. Εξετάσαμε την έννοια της ταυτότητας και τα βασικά χαρακτηριστικά που τη διέπουν καθώς και τις προεκτάσεις της. Στη συνέχεια παρουσιάσαμε αναλυτικά τη διάσταση της θεωρίας της ταυτότητας καθώς και όλες εκείνες τις επιστημονικές θεωρίες πάνω στις οποίες βασίζεται η θεωρία της ταυτότητας. Ακόμη αναφερθήκαμε στις κοινότητες της Γαλατίας παρουσιάζοντας τις θεωρίες για τις κοινότητες της βόρειας και νότιας Γαλατίας και προσπαθήσαμε να καταλήξουμε σε συμπεράσματα. Ένα άλλο θέμα που μας απασχόλησε ήταν η εφαρμογή της θεωρίας της ταυτότητας πάνω στην επιστολή του Παύλου καθώς και η κατασκευή της νέας χριστιανικής ταυτότητας από τον απόστολο Παύλο. Ακόμη θίξαμε το ιστορικό και κοινωνικό πλαίσιο της επιστολής και προσπαθήσαμε να εντάξουμε την επιστολή στην χώρο-χρονική της συνάφεια.
description: The aim of postgraduate study was to research and study the identity of the recipients of the letter of the apostle Paul to the community of Galatians. We examined the concept of identity and the main characteristics and its extensions that govern it. Then we presented in detail the dimension of the theory of identity as well as all those scientific theories on which is based the theory of identity. Also we talked about the communities of Galatia presenting theories on communities of northern and southern Gaul and tried to reach conclusions. Another issue that concerned us was the application of the theory of identity on the letter of Paul and the construction of the new Christian identity from the apostle Paul.We also touched upon the historical and social context of the letter and tried to integrate the letter to space-temporal coherence.
Comprehensive overview on bio-solids post-treatments
Creators: name: Reysset, Marie
name: , Bill
Publisher: name: Gates Open Research
Year: 2021

description: This publication is the result of the technical assistance provided by UPM Umwelt-Projekt- Management GmbH (UPM) and its partners, the Centre for Sustainable and Ecological Sanitation (CSES) of the University of Science & Technology Beijing (USTB), and the Bureau of Socioeconomic Research and Training (BSERT) of the Bangladesh University of Agriculture (BAU) to the United Nations High Commissioner for Refugees (UNHCR), the Department of Public Health Engineering (DPHE) and the local WASH sector in Cox’s Bazar, Bangladesh, in cooperation with the Bill & Melinda Gates Foundation.
 The goal of this technical assistance assignment was to provide support to the emergency WASH sector and local sanitation administration, regarding faecal sludge management, with a focus on value recovery in emergency settings, in order to sustainably improve the living conditions of displaced populations and their
 host communities.
 The present manual “Comprehensive Overview on DEWATS Effluent Post-Treatments” was elaborated in the context of a series of training workshops organised by UPM and its partners in Cox’s Bazar based on a Training Needs Assessment implemented in early 2019 among the local WASH community.
 The content of this manual was presented as part of the Training session “DEWATS – Decentralized Wastewater Treatment Plant Systems, also applicable for treatment of faecal sludge” organized in Cox’s Bazar in January 2020.
 The objectives of the training were to support trainees to gain an understanding of the selection criteria for a decentralised wastewater treatment plant system chain, their limits and required adaptations to treat sludges and their appropriateness in the Rohingya Refugee camps context.
An Explanation for Overrepresentation of Tidal Disruption Events in Post-starburst Galaxies
Creators: name: Wang, Mengye
name: Ma, Yiqiu
name: Wu, Qingwen
name: Jiang, Ning
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Tidal disruption events\,(TDEs) provide a valuable probe in studying the dynamics of stars in the nuclear environments of galaxies. Recent observations show that TDEs are strongly overrepresented in post-starburst or "green valley" galaxies, although the underlying physical mechanism remains unclear. Considering the possible interaction between stars and active galactic nucleus\,(AGN) disk, the TDE rates can be greatly changed compared to those in quiescent galactic nuclei. In this work, we revisit TDE rates by incorporating an evolving AGN disk within the framework of the "loss cone" theory. We numerically evolve the Fokker-Planck equations by considering the star-disk interactions, in-situ star formation in the unstable region of the outer AGN disk and the evolution of the accretion process for supermassive black holes\,(SMBHs). We find that the TDE rates are enhanced by about two orders of magnitude shortly after the AGN transitions into a non-active stage. During this phase, the accumulated stars are rapidly scattered into the loss cone due to the disappearance of the inner standard thin disk. Our results provide an explanation for the overrepresentation of TDEs in post-starburst galaxies.
description: Published in ApJ
Second-order accurate BGK schemes for the special relativistic hydrodynamics with the Synge equation of state
Creators: name: Chen, Yaping
name: Kuang, Yangyu
name: Tang, Huazhong
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: This paper extends the second-order accurate BGK finite volume schemes for the ultra-relativistic flow simulations [5] to the 1D and 2D special relativistic hydrodynamics with the Synge equation of state. It is shown that such 2D schemes are very time-consuming due to the moment integrals (triple integrals) so that they are no longer practical. In view of this, the simplified BGK (sBGK) schemes are presented by removing some terms in the approximate nonequilibrium distribution at the cell interface for the BGK scheme without loss of accuracy. They are practical because the moment integrals of the approximate distribution can be reduced to the single integrals by some coordinate transformations. The relations between the left and right states of the shock wave, rarefaction wave, and contact discontinuity are also discussed, so that the exact solution of the 1D Riemann problem could be derived and used for the numerical comparisons. Several numerical experiments are conducted to demonstrate that the proposed gas-kinetic schemes are accurate and stable. A comparison of the sBGK schemes with the BGK scheme in one dimension shows that the former performs almost the same as the latter in terms of the accuracy and resolution, but is much more efficiency.
description: 47 pages, 17 figures, 2 tables
A Chatbot for Information Security
Creators: name: Hamad, Sofian
name: Yeferny, Taoufik
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cryptography and Security (cs.CR)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Advancements in artificial intelligence (AI), speech recognition systems (ASR), and machine learning have enabled the development of intelligent computer programs called chatbots. Many chatbots have been proposed to provide different services in many areas such as customer service, sales and marketing. However, the use of chatbot as advisers in the field of information security is not yet considered. Furthermore, people, especially normal users who have no technical background, are unaware about many of aspects in information security. Therefore, in this paper we proposed a chatbot that acts as an adviser in information security. The proposed adviser uses a knowledge base with json file. Having such chatbot provides many features including raising the awareness in field of information security by offering accurate advice, based on different opinions from information security expertise, for many users on different. Furthermore, this chatbot is currently deployed through Telegram platform, which is one of widely used social network platforms. The deployment of the proposed chatbot over different platforms is considered as the future work.
Nonequilibrium resonant spectroscopy of molecular vibrons
Creators: name: Ryndyk, Dmitry A.
name: Cuniberti, Gianaurelio
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Quantum transport through single molecules is essentially affected by molecular vibrations. We investigate the behavior of the prototype single-level model with intermediate electron-vibron coupling and arbitrary coupling to the leads. We have developed a theory which allows to explore this regime via the nonequilibrium Green function formalism. We show that the nonequilibrium resonant spectroscopy is able to determine the energies of molecular orbitals and the spectrum of molecular vibrations. Our results are relevant to scanning tunneling spectroscopy experiments, and demonstrate the importance of the systematic and self-consistent investigation of the effects of the vibronic dynamics onto the transport through single molecules.
description: 4 pages, 5 figures, submitted
$SU_{L}(4)\times U(1)$ model for electroweak unification and sterile neutrinos
Creators: name: Riazuddin
name: Fayyazuddin
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Some of basic problems in neutrino physics such as new energy scales, the enormous gap between neutrino masses and the lightest charged fermion mass, possible existance of sterile neutrinos in eV mass range are studied in the local gauge group $SU_{L}(4)\times U(1)$ for electroweak unification, which does not contain fermions with exotic electric charges. It is shown that neutrino mass spectrum can be decoupled from that of the other fermions. Further normal seesaw mechanism for neutrinos, with right handed neutrino Majorana masses to be of order $M\gg M_{\text{weak}}$ as well a new eV-scale can be accomodated. The eV-scale seesaw may manifest itself in experiments like Liquid Scintilation Neutrino Detector (LSND) and MiniBooNE (MB) experimental results and future neutrino experiments.
description: 13 pages
Derivation of the Zakharov equations
Creators: name: Texier, Benjamin
Publisher: name: arXiv
Year: 2006
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: This paper continues the study of the validity of the Zakharov model describing Langmuir turbulence. We give an existence theorem for a class of singular quasilinear equations. This theorem is valid for well-prepared initial data. We apply this result to the Euler-Maxwell equations describing laser-plasma interactions, to obtain, in a high-frequency limit, an asymptotic estimate that describes solutions of the Euler-Maxwell equations in terms of WKB approximate solutions which leading terms are solutions of the Zakharov equations. Because of transparency properties of the Euler-Maxwell equations, this study is led in a supercritical (highly nonlinear) regime. In such a regime, resonances between plasma waves, electromagnetric waves and acoustic waves could create instabilities in small time. The key of this work is the control of these resonances. The proof involves the techniques of geometric optics of Joly, Métivier and Rauch, recent results of Lannes on norms of pseudodifferential operators, and a semiclassical, paradifferential calculus.
Spectral and dual-energy X-ray imaging for medical applications
Creators: name: Fredenberg, Erik
Publisher: name: arXiv
Year: 2021
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Spectral imaging is an umbrella term for energy-resolved x-ray imaging in medicine. The technique makes use of the energy dependence of x-ray attenuation to either increase the contrast-to-noise ratio, or to provide quantitative image data and reduce image artefacts by so-called material decomposition. Spectral imaging is not new, but has gained interest in recent years because of rapidly increasing availability of spectral and dual-energy CT and the dawn of energy-resolved photon-counting detectors. This review examines the current technological status of spectral and dual-energy imaging and a number of practical applications of the technology.
Fractional Quantum Hall State at Filling Factor $ν=1/4$ in Ultra-High-Quality GaAs 2D Hole Systems
Creators: name: Wang, Chengyu
name: Gupta, A.
name: Singh, S. K.
name: Madathil, P. T.
name: Chung, Y. J.
name: Pfeiffer, L. N.
name: Baldwin, K. W.
name: Winkler, R.
name: Shayegan, M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Single-component fractional quantum Hall states (FQHSs) at even-denominator filling factors may host non-Abelian quasiparticles that are considered to be building blocks of topological quantum computers. Such states, however, are rarely observed in the lowest-energy Landau level, namely at filling factors $ν<1$. Here we report evidence for an even-denominator FQHS at $ν=1/4$ in ultra-high-quality two-dimensional hole systems confined to modulation-doped GaAs quantum wells. We observe a deep minimum in the longitudinal resistance at $ν=1/4$, superimposed on a highly insulating background, suggesting a close competition between the $ν=1/4$ FQHS and the magnetic-field-induced, pinned Wigner solid states. Our experimental observations are consistent with the very recent theoretical calculations which predict that substantial Landau level mixing, caused by the large hole effective mass, can induce composite fermion pairing and lead to a non-Abelian FQHS at $ν=1/4$. Our results demonstrate that Landau level mixing can provide a very potent means for tuning the interaction between composite fermions and creating new non-Abelian FQHSs.
description: 7+9 pages, 3+4 figures
Landscape requalification of landfills: an open issue between legal and technical aspects
Creators: name: Pivato, Alberto
name: Savino, Michelangelo
name: Peres, Federico
name: Lavagnolo, Maria Cristina
Publisher: name: UPLanD - Journal of Urban Planning, Landscape & environmental Design
Year: 2019

description: The functional requalification of a modern landfill over the aftercare phase represents a landscape challenge since, in addition to technical and legal problems (also common to other waste management plants), long-term emissions must be taken into account. In fact, if for plants such as incinerators or composting after the operational phase an environmental recovery can be considered full, safe and healthy usable for the society in a relatively short period of time (1-5 years), for landfills the achievement of a sustainable and stable state of waste may require, a time much longer than that of the post-closure phase even for modern landfills (30 years). This state known as “final storage” refers to the quality reached by emissions and waste in chemical, biological and geological terms when all active control measures can be safely removed and it represents the necessary condition to guarantee the landfill requalification and its return back to the community with a new planned use as natural, recreational, didactic and social ones. Also, principles of landscape planning such as the specific legislation, the costs analysis and the territory analysis must be considered.
description: UPLanD - Journal of Urban Planning, Landscape & environmental Design, V. 4 N. 2 (2019): Black