cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Flux-Tube Formation and Holographic Tunneling
Creators: name: Gorsky, A. S.
name: Zakharov, V. I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider correlator of two concentric Wilson loops, a small and large ones related to the problem of flux-tube formation. There are three mechanisms which can contribute to the connected correlator and yield different dependences on the radius of the small loop. The first one is quite standard and concerns exchange by supergravity modes. We also consider a novel mechanism when the flux-tube formation is described by a barrier transition in the string language, dual to the field-theoretic formulation of Yang-Mills theories. The most interesting possibility within this approach is resonant tunneling which would enhance the correlator of the Wilson loops for particular geometries. The third possibility involves exchange by a dyonic string supplied with the string junction. We introduce also t'Hooft and composite dyonic loops as probes of the flux tube. Implications for lattice measurements are briefly discussed.
description: 15 pages, 3 figures
Galactic Satellite Systems: Radial Distribution and Environment Dependence of Galaxy Morphology
Creators: name: Ann, H. B.
name: Park, Changbom
name: Choi, Yun-Young
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have studied the radial distribution of the early (E/S0) and late (S/Irr) types of satellites around bright host galaxies. We made a volume-limited sample of 4,986 satellites brighter than M_r = -18.0 associated with 2,254 hosts brighter than M_r =-19.0 from the SDSS DR5 sample. The morphology of satellites is determined by an automated morphology classifier, but the host galaxies are visually classified. We found segregation of satellite morphology as a function of the projected distance from the host galaxy. The amplitude and shape of the early-type satellite fraction profile are found to depend on the host luminosity. This is the morphology-radius/density relation at the galactic scale. There is a strong tendency for morphology conformity between the host galaxy and its satellites. The early-type fraction of satellites hosted by early-type galaxies is systematically larger than that of late-type hosts, and is a strong function of the distance from the host galaxies. Fainter satellites are more vulnerable to the morphology transformation effects of hosts. Dependence of satellite morphology on the large-scale background density was detected. The fraction of early-type satellites increases in high density regions for both early and late-type hosts. It is argued that the conformity in morphology of galactic satellite system is mainly originated by the hydrodynamical and radiative effects of hosts on satellites.
description: 7 pages, 5 figures, submitted to MNRAS, fig1 corrected
The orbital-decay test of general relativity to the 2% level with 6-year VLBA astrometry of the double neutron star PSR J1537+1155
Creators: name: Ding, Hao
name: Deller, Adam
name: Fonseca, Emmanuel
name: Stairs, Ingrid
name: Stappers, Benjamin
name: Lyne, Andrew
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: PSR J1537+1155, also known as PSR B1534+12, is the second discovered double neutron star (DNS) binary. More than 20 years of timing observations of PSR J1537+1155 have offered some of the most precise tests of general relativity (GR) in the strong-field regime. As one of these tests, the gravitational-wave emission predicted by GR has been probed with the significant orbital decay ($\dot{P}_\mathrm{b}$) of PSR J1537+1155. However, compared to most GR tests provided with the post-Keplerian parameters, the orbital-decay test was lagging behind in terms of both precision and consistency with GR, limited by the uncertain distance of PSR J1537+1155. With an astrometric campaign spanning 6 years using the Very Long Baseline Array, we measured an annual geometric parallax of $1.063\pm0.075$ mas for PSR J1537+1155, corresponding to a distance of $0.94^{+0.07}_{-0.06}$ kpc. This is the most tightly-constrained model-independent distance achieved for a DNS to date. After obtaining $\dot{P}_\mathrm{b}^\mathrm{Gal}$ (i.e., the orbital decay caused by Galactic gravitational potential) with a combination of 4 Galactic mass distribution models, we updated the ratio of the observed intrinsic orbital decay to the GR prediction to $0.977\pm0.020$, three times more precise than the previous orbital-decay test ($0.91\pm0.06$) made with PSR J1537+1155.
description: 8 pages, 3 figures, 3 tables, accepted for publication in ApJL
title: Front Matter, Table of Contents, Preface, Conference Organization
Creators: name: Iwata, Satoru
name: Kakimura, Naonori
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2023
Subjects: subject: Front Matter
subject: Table of Contents
subject: Preface
subject: Conference Organization
subject: Theory of computation
subject: Mathematics of computing

description: Front Matter, Table of Contents, Preface, Conference Organization
description: LIPIcs, Vol. 283, 34th International Symposium on Algorithms and Computation (ISAAC 2023), pages 0:i-0:xvi
Ground-state statistics from annealing algorithms: Quantum vs classical approaches
Creators: name: Matsuda, Yoshiki
name: Nishimori, Hidetoshi
name: Katzgraber, Helmut G
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study the performance of quantum annealing for systems with ground-state degeneracy by directly solving the Schrödinger equation for small systems and quantum Monte Carlo simulations for larger systems. The results indicate that naive quantum annealing using a transverse field may not be well suited to identify all degenerate ground-state configurations, although the value of the ground-state energy is often efficiently estimated. An introduction of quantum transitions to all states with equal weights is shown to greatly improve the situation but with a sacrifice in the annealing time. We also clarify the relation between the spin configurations in the degenerate ground states and the probabilities that those states are obtained by quantum annealing. The strengths and weaknesses of quantum annealing for problems with degenerate ground states are discussed in comparison with classical simulated annealing.
description: 12 pages, 16 epsfiles
СИРДАРЁ ВИЛОЯТИ ШАРОИТИДА УЗУМ КЎЧАТЛАРИНИ ЕТИШТИРИШНИ ТАКОМИЛЛАШТИРИШ.
Creators: name: Абдураимов, Д.У.
name: Хўжақулов, Ф
name: Сатторов, И.Х.
name: Zhong, Weizhou
name: Yang, Xueji
name: Guo, Fei
Publisher: name: Zenodo
Year: 2025

description: Ушбу мақолада токни кўпайтириш ва кўчат етиштиришга оид маълумотлар келтирилган.
Lateral Size and Thickness Dependence in Ferroelectric Nanostructures Formed by Localized Domain Switching
Creators: name: Ng, Nathaniel
name: Ahluwalia, Rajeev
name: Su, Haibin
name: Boey, Freddy
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ferroelectric nanostructures can be formed by local switching of domains using techniques such as piezo-force microscopy (PFM). Understanding lateral size effects is important to determine the minimum feature size for writing ferroelectric nanostructures. To understand these lateral size effects, we use the time-dependent-Ginzburg-Landau equations to simulate localized switching of domains for a PFM type and parallel-plate capacitor configurations. Our investigations indicate that fringing electric fields lead to switching via 90 deg domain wedge nucleation for thicker films while at smaller thicknesses, the polarization switches directly by 180 deg rotations. The voltage required to switch the domain increases by decreasing the lateral size and at very small lateral sizes the coercive voltage becomes so large that it becomes virtually impossible to switch the domain. In all cases, the width of the switched region extends beyond the electrodes, due to fringing.
description: 21 pages, 11 figures
Nuclear shadowing from exclusive quarkonium photoproduction at the BNL RHIC and CERN LHC
Creators: name: Filho, A. L. Ayala
name: Goncalves, V. P.
name: Griep, M. T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The photonuclear production of vector mesons in ultraperipheral heavy ion collisions is investigated within the collinear approach using different parameterizations for the nuclear gluon distribution. The integrated cross section and the rapidity distribution for the $AA \to V AA$ ($V = J/Ψ, Υ$) process are computed for energies of RHIC and LHC. A comparison with the recent PHENIX data on coherent production of $J/Ψ$ mesons is also presented. We demonstrate that the study of the exclusive quarkonium photoproduction can be used to constrain the nuclear effects in the gluon distribution.
description: 8 pages, 4 figures, 2 tables. Version to be published in Physical Review C
Time variations of the Pacific equatorial undercurrent
Creators: name: Curran, Terrence Alexander
Publisher: name: University of British Columbia
Year: 2010

description: Time variations of the Pacific equatorial undercurrent at 150° west longitude are described, based upon observations from the CSS Parizeau during January-February 1979. Typical velocity maxima were 80 cm s⁻¹ in the eastward direction and 60 cm s⁻¹ in the northward direction near the core depth at 150 metres. Associated standard errors were 15 cm s⁻¹ due to uncertainty in probe motion and 5 cm s⁻¹ due to inherent current meter noise. Scalar field analysis suggests that the mean zonal current flow in the equatorial undercurrent is modulated by Rossby waves with periods of 30 days. In the surface layer, waves with periods of approximately 17 days were detected. A detailed description of the current profiler used during the experiment is included in the Appendix.
Australian BioCommons: building digital capability for life science communities
Creators: name: Burke, Melissa
Publisher: name: Zenodo
Year: 2021
Subjects: subject: Bioinformatics
subject: FOS: Computer and information sciences
subject: Community engagment
subject: Research Infrastructure
subject: Bioinformatics training

description: These slides were presented by Dr Melissa Burke on 25 November 2021 as part of ResBaz QLD and ResBaz Sydney. The presentation: Outlines the goals of the Australian BioCommons Describes how the Australian BioCommons engages with life science communities to resolve bioinformatics challenges Describes the services provided by the Australian BioCommons Describes the Australian BioCommons training program Provides guidance on where to find more information and training
Groebner-Shirshov Bases for Associative Algebras with Multiple Operators and Free Rota-Baxter Algebras
Creators: name: Bokut, L. A.
name: Chen, Yuqun
name: Qiu, Jianjun
Publisher: name: arXiv
Year: 2008
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16S15, 13P10, 16W99, 17A50

description: In this paper, we establish the Composition-Diamond lemma for associative algebras with multiple linear operators. As applications, we obtain Groebner-Shirshov bases of free Rota-Baxter algebra, $λ$-differential algebra and $λ$-differential Rota-Baxter algebra, respectively. In particular, linear bases of these three free algebras are respectively obtained, which are essentially the same or similar to those obtained by Ebrahimi-Fard and Guo, and Guo and Keigher recently by using other methods.
description: 21 pages
Spatial coherence effects on second- and fourth-order temporal interference
Creators: name: Yarnall, Timothy
name: Abouraddy, Ayman F.
name: Saleh, Bahaa E. A.
name: Teich, Malvin C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report the results of two experiments performed with two-photon light, produced via collinear degenerate optical spontaneous parametric downconversion (SPDC), in which both second-order (one-photon) and fourth-order (two-photon) interferograms are recorded in a Mach-Zehnder interferometer (MZI). In the first experiment, high-visibility fringes are obtained for both the second- and fourth-order interferograms. In the second experiment, the MZI is modified by the removal of a mirror from one of its arms; this leaves the fourth-order interferogram unchanged, but extinguishes the second-order interferogram. A theoretical model that takes into consideration both the temporal and spatial degrees-of-freedom of the two-photon state successfully explains the results. While the temporal interference in the MZI is independent of the spatial coherence of the source, that of the modified MZI is not.
Testable Deviation from Exact Tribimaximal Mixing
Creators: name: Koide, Yoshio
name: Nishiura, Hiroyuki
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A simple relation U_{MNS}=V_{CKM}^\dagger U_{TB} between the lepton and quark mixing matrices (U_{MNS} and V_{CKM}) is speculated under an ansatz that U_{MNS} becomes an exact tribimaximal mixing U_{TB} in a limit V_{CKM}={\bf 1}. By using the observed CKM mixing parameters, possible values of neutrino oscillation parameters are estimated: \sin^2 θ_{13}=0.024-0.028, \sin^2 2θ_{23}=0.94-0.95 and \tan^2 θ_{12}=0.24-1.00 depending on phase conventions of U_{TB}. Those values are testable soon by precision measurements in neutrino oscillation experiments.
description: 8 pages, 3 figures, version to appear in Phys.Lett.B
Distribution and kinematics of the HCN(3-2) emission down to the innermost region in the envelope of the O-rich star W Hya
Creators: name: Sebastien, Muller
name: Dinh-V-Trung
name: Jin-Hua, He
name: Jeremy, Lim
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report high angular resolution observations of the HCN (3-2) line emission in the circumstellar envelope of the O-rich star W Hya with the Submillimeter Array. The proximity of this star allows us to image its molecular envelope with a spatial resolution of just ~40 AU, corresponding to about 10 times the stellar diameter. We resolve the HCN (3-2) emission and find that it is centrally peaked and has a roughly spherically symmetrical distribution. This shows that HCN is formed in the innermost region of the envelope (within ~10 stellar radii), which is consistent with predictions from pulsation-driven shock chemistry models, and rules out the scenario in which HCN forms through photochemical reactions in the outer envelope. Our model suggests that the envelope decreases steeply in temperature and increases smoothly in velocity with radius, inconsistent with the standard model for mass-loss driven by radiative pressure on dust grains. We detect a velocity gradient of ~5 km/s in the NW--SE direction over the central 40 AU. This velocity gradient is reminescent of that seen in OH maser lines, and could be caused by the rotation of the envelope or by a weak bipolar outflow.
description: accepted for publication in ApJL
Improving accessibility to Bioconductor in Japan
Creators: name: Nishida, Kozo
Publisher: name: F1000 Research Limited
Year: 2021

description: Accessibility to Bioconductor’s information resources varies greatly between English and other languages. Bioconductor users in Japan are not small, but the number of developers is significantly smaller than in Europe and the United States. This BOF introduces attempts to improve accessibility to Bioconductor in Japan, along with the activities of BioPackathon, the Software Carpentry Japanese Team, and the Bioconductor Community Advisory Board. BioPacakthon is a community that promotes bio software packaging and provides Bioconductor packaging information in Japanese. BioPackathon also organizes BioC Asia 2021 and has conducted survey to overcome language barriers. The Software Carpentry Japanese Team is a community that localizes Carpentries teaching materials in Japanese. Bioconductor is creating Carpentries-style teaching materials, and it is important for Bioconductor that Carpentries' activities become active in Japan. The Bioconductor Community Advisory Board has a board member in Japan, and is planning to improve accessibility from Japan to Bioconductor in line with the CZI EOSS project. In this BOF, the above will be explained in slides and the future prospects will be introduced.
The distribution of first-passage times and durations in FOREX and future markets
Creators: name: Sazuka, Naoya
name: Inoue, Jun-ichi
name: Scalas, Enrico
Publisher: name: arXiv
Year: 2008
Subjects: subject: Trading and Market Microstructure (q-fin.TR)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Physics and Society (physics.soc-ph)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: Possible distributions are discussed for intertrade durations and first-passage processes in financial markets. The view-point of renewal theory is assumed. In order to represent market data with relatively long durations, two types of distributions are used, namely, a distribution derived from the so-called Mittag-Leffler survival function and the Weibull distribution. For Mittag-Leffler type distribution, the average waiting time (residual life time) is strongly dependent on the choice of a cut-off parameter t_ max, whereas the results based on the Weibull distribution do not depend on such a cut-off. Therefore, a Weibull distribution is more convenient than a Mittag-Leffler type one if one wishes to evaluate relevant statistics such as average waiting time in financial markets with long durations. On the other side, we find that the Gini index is rather independent of the cut-off parameter. Based on the above considerations, we propose a good candidate for describing the distribution of first-passage time in a market: The Weibull distribution with a power-law tail. This distribution compensates the gap between theoretical and empirical results much more efficiently than a simple Weibull distribution. We also give a useful formula to determine an optimal crossover point minimizing the difference between the empirical average waiting time and the one predicted from renewal theory. Moreover, we discuss the limitation of our distributions by applying our distribution to the analysis of the BTP future and calculating the average waiting time. We find that our distribution is applicable as long as durations follow a Weibull-law for short times and do not have too heavy a tail.
description: 26pages, 15figures, using elsart.cls
Electroweak Chiral Lagrangian for $W'$ Boson
Creators: name: Wang, Shun-Zhi
name: Jiang, Shao-Zhou
name: Ge, Feng-Jun
name: Wang, Qing
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The complete list of electroweak chiral Lagrangian for W', Z' and a neutral light higgs with symmetry $SU(2)_1\otimes SU(2)_2\otimes U(1)$ is provided. The bosonic part is accurate up to order of $p^4$, the matter part involving various fermions representation arrangements includes dimension three Yukawa type and dimension four gauge type operators. The universal mixings and masses of gauge boson and fermion are given. Constraints from mass differences for $K^0-\bar{K}^0$, $B_d^0-\bar{B}_{d}^0$, $B_s^0-\bar{B}_{s}^0$ systems and indirect CP violation parameter $|ε_K|$ for $K$ mesons are evaluated.
description: 40 pages, 8figures
The minimum model for the iron-based superconductors
Creators: name: Li, Jian
name: Wang, Yupeng
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A single band $t$-$U$-$J_1$-$J_2$ model is proposed as the minimum model to describe the superconductivity of the newly discovered iron-based superconductors $R(O_{1-x}F_x)FeAs$ and $RO_{1-x}FeAs$ ($R=La, Ce, Sm, Pr, Nd,Gd$). With the mean-field approach, it is found that the pairing occurs in the d-wave channel. In the likely parameter region of the real materials, by lowering temperature, the system enters firstly the $d_{xy}$ superconducting phase with $D_{4h}$-symmetry and then enters the time-reversal-symmetry-broken $d_{xy}+id_{x^2-y^2}$ superconducting phase with $C_{4h}$-symmetry.
description: 3 pages, 3 figures
Learning Geometric Transformations for Parametric Design: An Augmented Reality (AR)-Powered Approach
Creators: name: Shaghaghian, Zohreh
name: Burte, Heather
name: Song, Dezhen
name: Yan, Wei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Despite the remarkable development of parametric modeling methods for architectural design, a significant problem still exists, which is the lack of knowledge and skill regarding the professional implementation of parametric design in architectural modeling. Considering the numerous advantages of digital/parametric modeling in rapid prototyping and simulation most instructors encourage students to use digital modeling even from the early stages of design; however, an appropriate context to learn the basics of digital design thinking is rarely provided in architectural pedagogy. This paper presents an educational tool, specifically an Augmented Reality (AR) intervention, to help students understand the fundamental concepts of para-metric modeling before diving into complex parametric modeling platforms. The goal of the AR intervention is to illustrate geometric transformation and the associated math functions so that students learn the mathematical logic behind the algorithmic thinking of parametric modeling. We have developed BRICKxAR_T, an educational AR prototype, that intends to help students learn geometric transformations in an immersive spatial AR environment. A LEGO set is used within the AR intervention as a physical manipulative to support physical interaction and im-prove spatial skill through body gesture.
A 8 bits Pipeline Analog to Digital Converter Design for High Speed Camera Application
Creators: name: Prasetyo, Eri
name: Afandi, Hamzah
name: Ginhac, Nurul Huda Dominique
name: Paindavoine, Michel
Publisher: name: arXiv
Year: 2008
Subjects: subject: Robotics (cs.RO)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: - This paper describes a pipeline analog-to-digital converter is implemented for high speed camera. In the pipeline ADC design, prime factor is designing operational amplifier with high gain so ADC have been high speed. The other advantage of pipeline is simple on concept, easy to implement in layout and have flexibility to increase speed. We made design and simulation using Mentor Graphics Software with 0.6 μm CMOS technology with a total power dissipation of 75.47 mW. Circuit techniques used include a precise comparator, operational amplifier and clock management. A switched capacitor is used to sample and multiplying at each stage. Simulation a worst case DNL and INL of 0.75 LSB. The design operates at 5 V dc. The ADC achieves a SNDR of 44.86 dB. keywords: pipeline, switched capacitor, clock management
description: 5 pages, 5 authors, conference
Geometric phase of a two-level system in a dissipative environment
Creators: name: Fujikawa, Kazuo
name: Hu, Ming-Guang
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The geometric (Berry) phase of a two-level system in a dissipative environment is analyzed by using the second-quantized formulation, which provides a unified and gauge-invariant treatment of adiabatic and nonadiabatic phases and is thus applicable to a quantitative analysis of transitional regions away from ideal adiabaticity. In view of the recent experimental observation of the Berry phase in a superconducting qubit, we illustrate our formulation for a concrete adiabatic case in the Ohmic dissipation. The correction to the total phase together with the geometry-dependent dephasing time is given in a transparent way. The behavior of the geometric phase away from ideal adiabaticity is also analyzed in some detail.
description: 7 pages, 3 figures
Manganese chemistry in the Fraser estuary
Creators: name: De Mora, Stephen John
Publisher: name: University of British Columbia
Year: 2010

description: The Fraser Estuary was investigated five times under varying flow regimes. The surface distribution of dissolved manganese consistently exhibited a maximum value at a salinity ranging from 4 to 12 ppt. Experimental results and field data suggest this peak does not result from the desorption nor dissolution of riverborne suspended particulate manganese. The excess metal is derived from the estuarine bottom sediments. Desorption or dissolution of manganese from the estuarine bottom sediments resuspended due to the advancing salt wedge enhances the dissolved manganese concentration in the bottom waters, especially in the toe of the salt wedge. This manganese enrichment may also be influenced to a lesser extent by the concurrent release of some interstitial water with enriched dissolved manganese concentrations due to the in situ reduction of amorphous manganese oxides. The subsequent entrainment and mixing of water from the toe of the salt wedge into the outflowing river water causes a downstream increase in the dissolved manganese content, and eventually determines the peak manganese concentration and salinity. Further downstream mixing with saline waters having relatively low manganese levels causes surface concentrations to decrease. Thus, the dissolved manganese distribution can be explained in terms of two conservative dilution curves which intersect at the manganese peak. The dissolved oxygen generally behaves conservatively in both the surface and bottom waters of the Fraser Estuary. The removal of alkalinity may occur at low salinity, however, alkalinity exhibits conservative behaviour through most of the salinity range. The surface distribution of pH can be replicated theoretically only when mixing in the surface is considered as a two step process. The alkalinity behaves conservatively in the surface waters of the Strait of Georgia. The pH and dissolved oxygen display seasonal variations related to primary productivity and mixing processes. The distribution of dissolved manganese in surface waters of the Strait of Georgia is determined mainly by the dilution of Fraser River water. Bottom waters have enhanced dissolved manganese concentrations due to reductive remobi1ization of manganese from the sediments. Concentrations of dissolved manganese at mid-depths are determined by seasonal variations in the stability of the water column. Depth profiles of suspended particulate manganese indicate increasing concentrations with depth. This may result from the oxidative precipitation of manganese and/or the resuspension of bottom sediments.
Alternative approach to community detection in networks
Creators: name: Medus, A. D.
name: Dorso, C. O.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The problem of community detection is relevant in many disciplines of science and modularity optimization is the widely accepted method for this purpose. It has recently been shown that this approach presents a resolution limit by which it is not possible to detect communities with sizes smaller than a threshold which depends on the network size. Moreover, it might happen that the communities resulting from such an approach do not satisfy the usual qualitative definition of commune, i.e., nodes in a commune are more connected among themselves than to nodes outside the commune. In this article we introduce a new method for community detection in complex networks. We define new merit factors based on the weak and strong community definitions formulated by Radicchi et al (Proc. Nat. Acad. Sci. USA 101, 2658-2663 (2004)) and we show that this local definitions avoid the resolution limit problem found in the modularity optimization approach.
description: 17 pages, 6 figures
La coazione all'adempimento mediante la tecnica delle misure coercitive indirette
The compulsion to the fulfillment by the technique of indirect coercive measures
Creators: name: Bassora, Lara <1985>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2014
Subjects: IUS/15 Diritto processuale civile

description: La tesi intende offrire una riflessione in merito all’utilizzo della tecnica delle misure coercitive indirette quali strumenti di coartazione della volontà dell’obbligato al fine di indurlo all’esatto adempimento in presenza di statuizioni giudiziali il cui contenuto si sostanzi in prestazioni a carattere infungibile o in un dovere di astensione dal porre in essere determinati comportamenti, che non possono trovare esecuzione secondo le ordinarie forme previste dal Libro Terzo del Codice di procedura civile.
Il lavoro prende le mosse dall'analisi storico-comparatistica dello sviluppo dell'esecuzione processuale indiretta nei principali ordinamenti giuridici europei, per poi soffermarsi sulle singole misure coercitive indirette disciplinate dal legislatore italiano nel corso degli anni al fine di far fronte alle esigenze di tutela emergenti in specifici settori del diritto. Segue un'attenta disamina in ordine alla disposizione di cui all'art. 614-bis c.p.c., con cui è stata introdotta per la prima volta nel nostro ordinamento una misura coercitiva indiretta a carattere generale in materia di esecuzione degli obblighi di fare infungibile e di non fare.
description: The thesis aims to offer a reflection about the use of the technique of indirect coercive measures as a means of coercion of the debtor's will in order to compel the exact fulfillment in the presence of court's judgements whose content is entailed in infungibile performance or a duty to abstain from engaging in certain behaviors, which can not be enforced by the ordinary procedures regulate in the Third Book of the Italian Code of Civil Procedure.
The work builds on the historical-comparative analysis of progress of indirect coercive measures in the main European legal systems, then stop on the individual indirect coercive measures governed by the Italian legislator over the years in order to protect emerging needs in specific areas of law. Follows a careful examination about the provision of 614-bis article of the Italian Code of Civil Procedure, who introduced for the first time in our legal system a general indirect coercive measure concerning the enforcement of infungible obligations of do and obligations not to do.
Volume averaging in the quasispherical Szekeres model
Creators: name: Bolejko, Krzysztof
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This paper considers the volume averaging in the quasispherical Szekeres model. The volume averaging became of considerable interest after it was shown that the volume acceleration calculated within the averaging framework can be positive even though the local expansion rate is always decelerating. This issue was intensively studied within spherically symmetric models. However, since our Universe is not spherically symmetric similar analysis is needed in non symmetrical models. This papers presents the averaging analysis within the quasispherical Szekeres model which is a non-symmetrical generalisation of the spherically symmetric Lemaître--Tolman family of models. Density distribution in the quasispherical Szekeres has a structure of a time-dependent mass dipole superposed on a monopole. This paper shows that when calculating the volume acceleration, $\ddot{a}$, within the Szekeres model, the dipole does not contribute to the final result, hence $\ddot{a}$ only depends on a monopole configuration. Thus, the volume averaging within the Szekeres model leads to literally the same solutions as obtained within the Lemaître--Tolman model.
description: 8 pages; calculation of the spatial Ricci scalar added; accepted for publication in Gen. Rel. Grav
Methodologies in material balance and statistical data adjustment
Creators: name: Ellis, Robert N
Publisher: name: CQUniversity
Year: 2022
Subjects: subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: A material balance model has been developed that allows for the assignment of statistical weightings to the raw data of a two -product separation.The statistical weighting factors are derived by applying the concepts of variography based on Gy's sampling theory (1982). The issue of randomness when estimating the V(0) intercept value of the variogram at lag = 0 has been investigated. The effect of sampling duration on the magnitude of V(0) has also been quantified.
The importance of sampling correctness in relation to the automatic sampling of slurry streams has been highlighted.
The operational details of a hydrocyclone (two -product separator) have been outlined. The material balance model has been applied to a case study involving a typical separation in a hydrocyclone. Good agreement between several material balance methods has been found.
The contributions to this area of research can be listed as follows:
(1) The estimation of statistical weightings using variography.(2) The development and application of a material balance model that incorporates statistical weighting factors.(3) Define and examine the requirements of sampling correctness.
Correlated electron systems periodically driven out of equilibrium: Floquet + DMFT formalism
Creators: name: Tsuji, Naoto
name: Oka, Takashi
name: Aoki, Hideo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We propose to combine the Floquet formalism for systems in ac fields with the dynamical mean-field theory to study correlated electron systems periodically driven out of equilibrium by external fields such as intense laser light. This approach has a virtue that we can nonperturbatively include both the correlation effects and nonlinear effects due to the driving field, which is imperative in analyzing recent experiments for photoinduced phase transitions. In solving the problem, we exploit a general theorem that the Hamiltonian in a Floquet matrix form can be exactly diagonalized for single-band noninteracting systems. As a demonstration, we have applied the method to the Falicov-Kimball model in intense ac fields to calculate the spectral function. The result shows that photoinduced midgap states emerge from strong ac fields, triggering an insulator-metal transition.
description: 19 pages, 12 figures; minor changes
จากเอโดะถึงโตเกียว:การซ้อนทับของการอยู่อาศัย
Creators: name: ดร.วาริชา วงศ์พยัต
Publisher: name: โรงพิมพ์แห่งจุฬาลงกรณ์มหาวิทยาลัย
Year: 2012
Subjects: เอโดะ,โตเกียว,การอยู่อาศัย,พื้นที่ทางตั้ง,การเปลี่ยนแปลง

description: 61, Academic Journal of Architecture
Ballistic magneto-thermal transport in a Heisenberg spin chain at low temperatures
Creators: name: Zhang, Lifa
name: Wang, Jian-Sheng
name: Li, Baowen
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We study ballistic thermal transport in Heisenberg spin chain with nearest-neighbor ferromagnetic interactions at low temperatures. Explicit expressions for transmission coefficients are derived for thermal transport in a periodic spin chain of arbitrary junction length by a spin-wave model. Our analytical results agree very well with the ones from nonequilibrium Green's function method. Our study shows that the transmission coefficient oscillates with the frequency of thermal wave. Moreover, the thermal transmission shows strong dependence on the intrachain coupling, the length of the spin chain, and the external magnetic field. The results demonstrate the possibility of manipulating spin-wave propagation and magnetothermal conductance in the spin-chain junction by adjusting the intrachain coupling and/or the external magnetic field.
description: 6 pages, 7 figures
Efficient simulation of non-classical liquid-vapour phase-transition flows: a method of fundamental solutions
Creators: name: Rana, Anirudh S
name: Saini, Sonu
name: Chakraborty, Suman
name: Lockerby, Duncan A
name: Sprittles, James E
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Classical continuum-based liquid vapour phase-change models typically assume continuity of temperature at phase interfaces along with a relation which describes the rate of evaporation at the interface (Hertz-Knudsen-Schrage, for example). However, for phase transitions processes at small scales, such as the evaporation of nanodroplets, the assumption that the temperature is continuous across the liquid-vapour interface leads to significant inaccuracies (McGaughey & Ward 2002; Rana et al. 2019), as may the adoption of classical constitutive relations that lead to the Navier-Stokes-Fourier equations (NSF). In this article, to capture the notable effects of rarefaction at small scales, we adopt an extended continuum-based approach utilizing the coupled constitutive relations (CCR). In CCR theory, additional terms are invoked in the constitutive relations of NSF equations originating from the arguments of irreversible thermodynamics as well as consistent with kinetic theory of gases. The modelling approach allows us to derive new fundamental solutions for the linearised CCR model and to develop a numerical framework based upon the method of fundamental solutions (MFS) and enables threedimensional multiphase micro-flow simulations to be performed at remarkably low computational cost. The new framework is benchmarked against classical results and then explored as an efficient tool for solving three-dimensional phase-change events involving droplets.
Inverse bremsstrahlung cross section estimated within evolving plasmas using effective ion potentials
Creators: name: Wang, F.
name: Ziaja, B.
name: Weckert, E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: In this paper we estimate the total cross sections for field stimulated photoemissions and photoabsorptions by quasi-free electrons within a non-equilibrium plasma evolving from the strong coupling to the weak coupling regime. Such transition may occur within laser-created plasmas, when the initially created plasma is cold but the heating of the plasma by the laser field is efficient. In particular, such a transition may occur within plasmas created by intense VUV radiation from a FEL as indicated by the results of the first experiments performed at the FLASH facility at DESY. In order to estimate the inverse bremsstrahlung cross sections, we use point-like and effective atomic potentials. For ions modelled as point-like charges, the total cross sections are strongly affected by the changing plasma environment. The maximal change of the cross sections may be of the order of 60 at the change of the plasma parameters (inverse Debye length, kappa, and the electron density, rho_e), in the range: kappa=0-3 A^{-1} and ρ_e=0.01-1 A^{-1}. These ranges correspond to the physical conditions within the plasmas created during the first cluster experiments performed at the FLASH facility at DESY. In contrast, for the effective atomic potentials the total cross sections for photoemission and photoabsorption change only by a factor of 7 at most at the same plasma parameter range. Our results show that the inverse bremsstrahlung cross section estimated with the effective atomic potentials is not much affected by the plasma environment. This observation validates the previous estimations of the enhanced heating effect. This is important as this effect may be responsible for high energy absorption within clusters irradiated with VUV radiation.
description: 15 pages, 5 figures
БУҚОҚ КАСАЛЛИГИ ВА УНИ ОЛДИНИ ОЛИШ
Creators: name: Ширинова, Азиза
name: Рахматова Муниса Ормон қизи, Муниса
Publisher: name: Zenodo
Year: 2025

description: Мазкур мақолада буқоқ касаллиги, унинг келиб чиқиш сабаблари, белгилари ва оқибатлари ҳақида маълумотлар берилган. Шунингдек, уни олдини олиш чора-тадбирлари, йод етишмаслигига қарши кураш усуллари ва аҳолини соғлом турмуш тарзига ўргатишнинг аҳамияти ҳақида сўз боради. Мақола тиббий соҳада ўқувчи талабалар ва аҳоли учун фойдали манба бўла олади.
Resonant interactions between continental shelf waves
Creators: name: Hsieh, William Wei
Publisher: name: University of British Columbia
Year: 2010

description: Part I of this thesis develops a theory of nonlinear resonant interactions between continental shelf waves. From the inviscid, unforced long-wave equations for a rotating, homogeneous fluid, it is shown that resonant interactions between three continental shelf waves can occur. Evolution equations governing the amplitude and the energy of individual waves in a resonant triad are derived. The nonlinearity in the governing equations allows energy to be transferred between the waves, but with the total energy conserved. In particular, interactions on an exponential shelf are studied. Part II of this thesis compares the theory from Part I with observations and data from the Oregon shelf. Rotary spectral analysis and cross-shelf modal fitting are the two techniques used for shelf wave detection. Many features characteristic of shelf waves and of the resonant triad interaction theory are found in the current and sea level data. Also, for the first time, shelf waves have been unambiguously identified in both the alongshore and cross-shelf dimensions. The data indicate that the wind generates long continental shelf waves at low frequencies. Nonlinear resonant interactions then transfer energy from the low-frequency long waves to higher frequency shelf waves with much shorter wavelengths. The good agreement between theory and observation suggests that nonlinear energy transfer may play a significant role in shelf wave dynamics.
Theory of Thermodynamic Stresses in Colloidal Dispersions at the Glass Transition
Creators: name: Hajnal, D.
name: Henrich, O.
name: Crassous, J. J.
name: Siebenbuerger, M.
name: Drechsler, M.
name: Ballauff, M.
name: Fuchs, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We discuss the nonlinear rheology of dense colloidal dispersions at the glass transition. A first principles approach starting with interacting Brownian particles in given arbitrary homogeneous (incompressible) flow neglecting hydrodynamic interactions is sketched. It e.g. explains steady state flow curves for finite shear rates measured in dense suspensions of thermosensitive core-shell particles consisting of a polystyrene core and a crosslinked poly(N-isopropylacrylamide)(PNIPAM) shell. The exponents of simple and generalized Herschel Bulkley laws are computed for hard spheres.
description: 3 pages, 1 figure; contribution to The XVth International Congress on Rheology, August 3-8, 2008, Monterey, California; submitted to J. Rheol
The two loop supersymmetric corrections to lepton anomalous dipole moments in split supersymmetry scenarios
Creators: name: Feng, Tai-Fu
name: Sun, Lin
name: Yang, Xiu-Yi
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: An analysis of electroweak corrections to the anomalous dipole moments of lepton from some special two-loop diagrams where a closed neutralino/chargino loop is inserted into relevant one-loop diagrams of the standard model is presented in the split supersymmetry scenarios. Considering the translational invariance of the inner loop momenta and the electromagnetic gauge invariance, we get all dimension 6 operators and their coefficients. After applying equations of motion to the external leptons, we obtain the anomalous dipole moments of lepton. The numerical results imply that there is parameter space where the contribution to the muon anomalous magnetic dipole moment from this sector is perhaps significant, and the contribution to the electron electric dipole moment from this sector is sizable enough to be observed in next generation experiments.
description: revtex, 36 pages, including 8 figures
Dynamics and neutrino signal of black hole formation in non-rotating failed supernovae. II. progenitor dependence
Creators: name: Sumiyoshi, K.
name: Yamada, S.
name: Suzuki, H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the progenitor dependence of the black hole formation and its associated neutrino signals from the gravitational collapse of non-rotating massive stars, following the preceding study on the single progenitor model in Sumiyoshi et al. (2007). We aim to clarify whether the dynamical evolution toward the black hole formation occurs in the same manner for different progenitors and to examine whether the characteristic of neutrino bursts is general having the short duration and the rapidly increasing average energies. We perform the numerical simulations by general relativistic neutrino-radiation hydrodynamics to follow the dynamical evolution from the collapse of pre-supernova models of 40Msun and 50Msun toward the black hole formation via contracting proto-neutron stars. For the three progenitor models studied in this paper, we found that the black hole formation occurs in ~0.4-1.5 s after core bounce through the increase of proto-neutron star mass together with the short and energetic neutrino burst. We found that density profile of progenitor is important to determine the accretion rate onto the proto-neutron star and, therefore, the duration of neutrino burst. We compare the neutrino bursts of black hole forming events from different progenitors and discuss whether we can probe clearly the progenitor and/or the dense matter.
description: 30 pages, 11 figures, accepted for publication in ApJ