cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On the nature of Bose-Einstein condensation in disordered systems
Creators: name: Jaeck, Thomas
name: Pulé, Joseph V.
name: Zagrebnov, Valentin
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study the perfect Bose gas in random external potentials and show that there is generalized Bose-Einstein condensation in the random eigenstates if and only if the same occurs in the one-particle kinetic-energy eigenstates, which corresponds to the generalized condensation of the free Bose gas. Moreover, we prove that the amounts of both condensate densities are equal. Our method is based on the derivation of an explicit formula for the occupation measure in the one-body kinetic-energy eigenstates which describes the repartition of particles among these non-random states. This technique can be adapted to re-examine the properties of the perfect Bose gas in the presence of weak (scaled) non-random potentials, for which we establish similar results.
Performance of an auger dredging cutter for subsea dredging and mining
Creators: name: Sarkar, MK
Publisher: name: University Of Tasmania
Year: 2023

description: Increasing use of deep-water dredger and miner vehicles has been anticipated for resource collection, engineering construction and environmental protection. Among existing deep-dredging equipment designs submersible dredgers have advantages over others such as surface designs. Considering the limitations of commercially available and conceptualised submersible dredgers, a different type - the 'Swimming Remotely Operated Submersible Dredger' (SROSD) is conceptualised in this research. In its working mode, it imitates a walking motion by using spuds that are also used for station keeping during dredging. When required, the vehicle can swim by means of vector thrusters. The vector thrusters also help in position-keeping and motion-control during swimming. To offset high forces generated during excavation of hard materials, spuds, variable buoyancy tanks and control planes are included as secondary station-keeping devices. The general arrangement and the sub-systems of the conceptualised vehicle are described. For swimming and control in a submerged condition, the vehicle is ballasted to a neutrally buoyant condition. Balancing of the excavation forces is necessary for efficient production and this is a design problem with submersible dredgers. A transverse axis auger cutter capable of surgical cutting with low force fluctuations is used in the design. A theoretical model of the cutting forces in vertical and horizontal directions generated by this type of cutter is proposed. An experiment was designed to measure the cutting forces generated by this cutter. Comparisons between the power requirements derived from the experiment and the theoretical model were done to validate the model. The measured experimental power requirements were found to be within the calculated power ranges for dredging loose to slightly compacted sand in similar operating conditions. In a further experiment to assess the spillage from the cutter in operation, near and far field turbidity generation by the auger was measured by using turbidity sensors. Measurements of turbidity were taken to indicate the environmental impact of the auger. It was observed that the turbidity increase was dependent on the relative position between the probes and the auger and its shroud. It is hoped that, through this work, a new design of vehicle, along with the reaction force analysis of the excavation and the turbidity measurements will significantly contribute to the evolution of existing deep-dredging and mining equipment leading to improved efficiency, increased mobility and position control while minimising environmental disturbance.
Design Of An Induction Probe For Simultaneous Measurements Of Permittivity And Resistivity
Creators: name: Settimi, A.
name: Zirizzotti, A.
name: Baskaradas, J. A.
name: Bianchi, C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Geophysics (physics.geo-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: In this paper, we propose a discussion of the theoretical design and move towards the development and engineering of an induction probe for electrical spectroscopy which performs simultaneous and non invasive measurements on the electrical RESistivity ρand dielectric PERmittivity εr of non-saturated terrestrial ground and concretes (RESPER probe). In order to design a RESPER which measures ρand εr with inaccuracies below a prefixed limit (10%) in a band of low frequencies (LF) (B=100kHz), the probe should be connected to an appropriate analogical digital converter (ADC), which samples in uniform or in phase and quadrature (IQ) mode, otherwise to a lock-in amplifier. The paper develops only a suitable number of numerical simulations, using Mathcad, which provide the working frequencies, the electrode-electrode distance and the optimization of the height above ground minimizing the inaccuracies of the RESPER, in galvanic or capacitive contact with terrestrial soils or concretes, of low or high resistivity. As findings of simulations, we underline that the performances of a lock-in amplifier are preferable even when compared to an IQ sampling ADC with high resolution, under the same operating conditions. As consequences in the practical applications: if the probe is connected to a data acquisition system (DAS) as an uniform or an IQ sampler, then it could be commercialized for companies of building and road paving, being employable for analyzing "in situ" only concretes; otherwise, if the DAS is a lock-in amplifier, the marketing would be for companies of geophysical prospecting, involved to analyze "in situ" even terrestrial soils.
description: 37 pages, 7 figures, 3 tables
Refinement of the crystal structure of praseodymium orthoscandate, PrScO3
Creators: name: Gesing, T.M.
name: Uecker, R.
name: Buhl, J.-C.
Publisher: name: Berlin : de Gruyter
Year: 2009
Subjects: subject: Crystal structure
subject: Chemistry
subject: Crystallography
subject: 540

description: O3PrSc, Prima (no. 62), a = 5.780(1) Å, b = 8.025(2) Å, c = 5.608(1) Å, V= 260.1 Å3, Z = 4, R gr(F) = 0.025, wRref(F2) = 0.060, T= 298 K. © by Oldenbourg Wissenschaftsverlag, München.
title: Officer Leadership Program
Creators: name: National Highway Traffic Safety Administration
Publisher: name: Not Available
Year: 1997
Subjects: classificationCode: https://trt.trb.org/term/90917
subject: Traffic law enforcement
classificationCode: https://trt.trb.org/term/91703
subject: Law enforcement personnel
classificationCode: https://trt.trb.org/term/92147
subject: Interagency relations
classificationCode: https://trt.trb.org/term/88644
subject: Education and training

description: The National Highway Traffic Safety Administration (NHTSA), Office of

Enforcementa and Emergency Services, sponsors an ongoing, cooperative program

with participating law enforcement agencies around the country.  In this

program, law enforcement agencies send an officer to the NHTSA Washington, D.C.

office for approximately a one year assignment.  These officers help develop

state-of-the-art materials on technological subjects, as well as improve

traffic enforcement strategies and training programs on a myriad of traffic

safety initiatives. Traffic safety priority programs and initiatives are

enhanced when officers review and play an active role in the development of

our national programs. Officers return to their agency with better understanding

of the Federal contract and grant processes, how to respond to requests for

proposals, and be more familiar with the long-term, highway safety and law

enforcement traffic safety programs of NHTSA and the Federal Highway

Administration.  3p.
Pseudogap in underdoped cuprates and spin-density-wave fluctuations
Creators: name: Sedrakyan, Tigran A.
name: Chubukov, Andrey V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We analyze fermionic spectral function in the spin-density-wave (SDW) phase of quasi-2D cuprates at small but finite T. We use a non-perturbative approach and sum up infinite series of thermal self-energy terms, keeping at each order nearly-divergent (T/J) |log epsilon| terms, where epsilon is a deviation from a pure two-dimensionality, and neglecting regular T/J corrections. We show that, as SDW order decreases, the spectral function in the antinodal region acquires peak/hump structure: the coherent peak position scales with SDW order parameter, while the incoherent hump remains roughly at the same scale as at T=0 when SDW order is the strongest. We identify the hump with the pseudogap observed in ARPES and argue that the presence of coherent excitations at low energies gives rise to magneto-oscillations in an applied field. We show that the same peak/hump structure appears in the density of states and in optical conductivity.
description: 14 pages, 12 figures, to be published in PRB
Preferential concentration vs. clustering in inertial particle transport by random velocity fields
Creators: name: Olla, Piero
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The concept of preferential concentration in the transport of inertial particles by random velocity fields is extended to account for the possibility of zero correlation time and compressibility of the velocity field. It is shown that, in the case of an uncorrelated in time random velocity field, preferential concentration takes the form of a condition on the field history leading to the current particle positions. This generalized form of preferential concentration appears to be a necessary condition for clustering in the uncorrelated in time case. The standard interpretation of preferential concentration is recovered considering local time averages of the velocity field. In the compressible case, preferential concentration occurs in regions of negative divergence of the field. In the incompressible case, it occurs in regions of simultaneously high strain and negative field skewness.
description: 7 pages
Benthic diatom communities of coastal marine environments in the Windmill Islands, Antarctica
Creators: name: Cunningham, LK
Publisher: name: University Of Tasmania
Year: 2023

description: This project examined the effects of ecological factors and anthropogenic contaminants on benthic diatom communities near Casey Station, in the Windmill Islands, Antarctica. Preliminary sampling indicated significant compositional differences occurred between diatom communities in bays immediately adjacent to Casey Station and those more distant. Subsequently, a more detailed appraisal of spatial variability in benthic diatom communities was undertaken. Significant differences in community composition were demonstrated for all scales examined, however, increased distances between samples typically corresponded to increased dissimilarity. The influence of environmental factors on spatial variability was assessed using direct gradient ordination techniques. Grainsize, particularly the mud content, accounted for the majority of variation in diatom abundances explained by the measured environmental variables. Differences in light availability, water depth and grain-size explained 60% of the variation in community composition observed between locations. The remaining 40% of the variation in diatom community composition remains unexplained; potential causes include freshwater input, and chemical contamination. A preliminary analysis of temporal variability in benthic diatom communities from the Windmill Islands is presented. Seasonal, short-term (l00's of years) and long term (1000's of years) changes in community composition were examined at several locations. Temporal variability of the diatom communities within Brown Bay was also assessed, in conjunction with metal and Pb210 data. Within one core, a shift in community composition was detected subsequent to the onset of chemical contamination. Some changes in species abundance exceeded the natural variability observed in control cores, and thus were attributable to chemical contamination. Relationships between diatom abundances and concentrations of different metals within Brown Bay were examined using direct gradient analyses. Approximately 50% of the variation in the diatom community composition was related to metal concentrations. Further clarification of the interactions between metals, sediment grain-size and diatom community composition would be required prior to the development of predictive models. Direct gradient analyses also demonstrated a weak correlation between diatom community composition and hydrocarbon distribution. Manipulative field experiments were used to demonstrate that the composition of diatom communities can be influenc.ed by both metal and hydrocarbon contaminants at concentrations comparable to levels produced by station activities. This supports the conclusion that anthropogenic contaminants are responsible for some compositional differences observed in diatom communities, both within Brown Bay and between Brown Bay and reference locations.
Polaron relaxation in a quantum dot due to anharmonic coupling within a mean-field approach
Creators: name: Stauber, T.
name: Vasilevskiy, M. I.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the electronic relaxation in a quantum dot within the polaron approach, by focusing on the {\it reversible} anharmonic decay of longitudinal optical (LO) phonons forming the polaron into longitudinal acoustic (LA) phonons. The coherent coupling between the LO and LA phonons is treated within a mean-field approach. We derive a temperature-dependent inter-level coupling parameter, related to the Grüneisen parameter and the thermal expansion coefficient, that characterizes an effective decay channel for the electronic (or excitonic) states. Within this theory, we obtain a characteristic anharmonic decay time of 1ns, 2-3 orders of magnitude longer than previous predictions based on the Fermi's Golden Rule. We suggest that coherent relaxation due to carrier-carrier interaction is an efficient alternative to the (too slow) polaron decay.
description: 5 pages, 1 figure
Comments on the Tetrad (Vielbeins)
Creators: name: Fukuyama, Takeshi
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We want to correct the misunderstandings on the tetrad (or veilbeins in general) appeared in many text books or review articles. The tetrad should be defined without any condition. $e_{μa}=\partial_μX_a$ with local Lorentz coordinates $X_a$ ia wrong in many sences: it gives the condition $\partial_μe_{νa}=\partial_νe_{μa}$, which leads us to the trivial result that the cyclic coefficients vanish identically and to the null Riemannian tensor. Also $e_{μa}e_ν^a=g_{μν}$ is not scalar under the local Lorentz transformation etc. We show how these deficits are remedied by the correct definition, $e_{μa}=D_μZ_a$ with local (Anti) de Sitter coordinates $Z_A$.
description: 8 pages, no Figure
Some results in the theory of radicals of associative rings
Creators: name: Heinicke, Allan George
Publisher: name: University of British Columbia
Year: 2011

description: Several aspects of the theory of radical classes in associative ring theory are investigated. In Chapter three, the Andrunakievic-Rjabuhin construction of radicals by means of annihilators of modules is employed to define several radical properties. One of these is shown to be the "weak radical" of Koh and Mewborn. The relations between these radicals, their properties and some of their applications to the study of classical quotient rings are investigated. In Chapter four, the ideals of a ring K of the form R(K), for a hereditary radical, R, are studied. A closure operation on the lattice of ideals is introduced, and the "closed" ideals are precisely the ideals of this type. It is proved that the ascending and descending chain conditions on the closed ideals of a ring imply that the ring has only a finite number of closed ideals. In Chapter five, finite subdirect sums of rings are studied. The properties of hereditary radicals and of the various structure spaces, in a situation where one has a finite subdirect sum of rings, are investigated.
Chiral Topological Insulators, Superconductors and other competing orders in three dimensions
Creators: name: Hosur, Pavan
name: Ryu, Shinsei
name: Vishwanath, Ashvin
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We discuss the proximate phases of a three-dimensional system with Dirac-like dispersion. Using the cubic lattice with plaquette $π$-flux as a model, we find, among others phases, a chiral topological insulator and singlet topological superconductor. While the former requires a special "chiral" symmetry, the latter is stable as long as time reversal and SU(2) spin rotation symmetry are present. These phases are characterized by stable surface Dirac fermion modes, and by an integer topological invariant in the bulk. The key features of these phases are readily understood in a two dimensional limit with an appropriate pairing of Dirac nodes between layers. This Dirac node-pairing picture is also shown to apply to $Z_2$ topological insulators protected by time-reversal symmetry (TRS). The nature of point-like topological defects in these phases is also investigated, revealing an interesting duality relation between these topological phases and the Neel phase.
description: PRB published version
An analytical and comparative history of master and servant legislation in Tasmania
Creators: name: Davidson, AP
Publisher: name: University Of Tasmania
Year: 2023

description: When I began to research the topic of master and servant legislation in Tasmania my main object was to examine the factors leading to the passage of the Master and Servant Act in 1856, to explain how it worked and to examine its implications, principally in relation to the economic torts of modern industrial law. However, I found that certain aspects of the Act could not be explained without reference to the 1854 Master and Servant Act and that, in turn, the 1852 Servants and Apprentices Act and the 1840 Apprentices and Servants Act called for attention. Although the 1840 legislation was the first of its type in Van Diemen's Land it had been preceded in New South Wales by similar legislation in 1828, and since the intention of the governments of both colonies was to clear up doubts as to the applicability of English law it became necessary to examine the English provisions which treated breaches of contracts of employment as criminal offences. The thesis is therefore much more of an historical study than was originally intended, although Chapter 10 does attempt to show why the continued existence of the 1856 Act still constitutes a danger to unions and their members in Tasmania and in other states possessing similar statutes. An analysis of each colonial Act is prefaced by a chapter which seeks to place it in its political, social and economic context with particular emphasis on the legal aspects of various contemporary schemes of immigration.
title: Traffic safety outlook : health care/injury control
Creators: name: United States Department of Transportation
Publisher: name: United States Department of Transportation
publisherIdentifier: https://ror.org/02xfw2e90
publisherIdentifierScheme: ROR
Year: 1995
Subjects: classificationCode: https://trt.trb.org/term/91758
subject: Impaired drivers
classificationCode: https://trt.trb.org/term/90848
subject: Drunk driving
classificationCode: https://trt.trb.org/term/93814
subject: Seat belts
classificationCode: https://trt.trb.org/term/90769
subject: Crash injuries
classificationCode: https://trt.trb.org/term/90775
subject: Fatalities
classificationCode: https://trt.trb.org/term/90638
subject: Driver education
classificationCode: https://trt.trb.org/term/90602
subject: Highway safety

description: 1p.
description: This one page brochure announces Secretary of Transportation Federico Peqa's

goals to increase seatbelt use and curb impaired driving, thus bringing down

the medical costs of accidents to the American public.
The atmospheric Ekman spiral for piecewise-uniform eddy viscosity
Creators: name: Stefanescu, Eduard
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 86A10, 34B05

description: We investigate the boundary-value problem of atmospheric Ekman flows with piecewise-uniform eddy viscosity. In addition we present a method for finding more general solutions by considering eddy viscosity as an arbitrary step-function. We discuss the existence and uniqueness of the solutions obtained through this method, providing detailed proofs for cases with one and two "jumps" in eddy viscosity. For scenarios with more "jumps," we establish results inductively. Furthermore, we examine the angle between the bottom surface of the Ekman layer and geostrophic winds by extremizing variables such as the eddy viscosity and its point of change. These calculations reveal how the angle can differ from $45^\circ$, demonstrating that the extreme values of $0^\circ$ and $90^\circ$ are achievable, indicating the potential range of the deflection angle.
Population III Star Clusters in the Reionized Universe
Creators: name: Johnson, Jarrett L.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In reionized regions of the Universe, gas can only collapse to form stars in dark matter (DM) haloes which grow to be sufficiently massive. If star formation is prevented in the minihalo progenitors of such DM haloes at redshifts z >~ 20, then these haloes will not be self-enriched with metals and so may host Population (Pop) III star formation. We estimate an upper limit for the abundance of Pop III star clusters which thus form in the reionized Universe, as a function of redshift. Depending on the minimum DM halo mass for star formation, between of the order of one and of the order of a thousand Pop III star clusters per square degree may be observable at 2 ~ 3 and within ~ 40 arcsec (~ 1 Mpc comoving) of DM haloes with masses of ~ 10^11 M_Sun, the descendants of the haloes at z ~ 20 which host the first galaxies that begin reionization. If the stellar initial mass function (IMF) is top-heavy the clusters may have sufficiently high luminosities in both Ly_alpha and He II lambda1640 to be detected and for constraints to be placed on the Pop III IMF. While a small fraction of DM haloes with masses as high as ~10^9 M_Sun at redshifts z
description: 13 pages, 6 figures, accepted for publication in MNRAS
Tailoring Magnetic Features in Zigzag-Edged Nanographenes by Controlled Diels–Alder Reactions
Creators: name: Ajayakumar, M.R.
name: Fu, Yubin
name: Liu, Fupin
name: Komber, Hartmut
name: Tkachova, Valeriya
name: Xu, Chi
name: Zhou, Shengqiang
name: Popov, Alexey A.
name: Liu, Junzhi
name: Feng, Xinliang
Publisher: name: Weinheim : Wiley-VCH
Year: 2020
Subjects: subject: circumacenes
subject: Diels–Alder reaction
subject: peri-acenes
subject: singlet biradicals
subject: zigzag edges
subject: 540
subject: 660

description: Nanographenes (NGs) with tunable electronic and magnetic properties have attracted enormous attention in the realm of carbon-based nanoelectronics. In particular, NGs with biradical character at the ground state are promising building units for molecular spintronics. However, most of the biradicaloids are susceptible to oxidation under ambient conditions and photolytic degradation, which hamper their further applications. Herein, we demonstrated the feasibility of tuning the magnetic properties of zigzag-edged NGs in order to enhance their stability via the controlled Diels–Alder reactions of peri-tetracene (4-PA). The unstable 4-PA (y0=0.72; half-life, t1/2=3 h) was transformed into the unprecedented benzo-peri-tetracenes (BPTs) by a one-side Diels–Alder reaction, which featured a biradical character at the ground state (y0=0.60) and exhibited remarkable stability under ambient conditions for several months. In addition, the fully zigzag-edged circumanthracenes (CAs) were achieved by two-fold or stepwise Diels–Alder reactions of 4-PA, in which the magnetic properties could be controlled by employing the corresponding dienophiles. Our work reported herein opens avenues for the synthesis of novel zigzag-edged NGs with tailor-made magnetic properties. © 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
Secure Microservice Communication in Optical Networks
Creators: name: Jangid, Jagdish
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 460609
subject: Networking and communications

description: As optical network functions increasingly adopt microservice architectures, traditional con- tainer security mechanisms are proving insufficient against sophisticated attacks targeting these critical infrastructure components. This paper introduces a novel framework for securing microser- vice communications in optical networks through the application of Memory Protection Keys (MPK) for enhanced container isolation. Converging containerization technologies with optical networking introduces unique security challenges, particularly in maintaining isolation between sensitive optical control functions while preserving the ultra-low latency requirements essential for network operations. The proposed approach leverages hardware-enforced memory isolation provided by Intel MPK to establish secure domains for optical control functions without sacrificing performance in latency-sensitive applications. The framework includes zero-copy communication protocols between isolated domains, runtime verification through eBPF-based monitoring, and hardware-assisted security mechanisms specifically designed for optical control plane operations. This work addresses the growing tension between security requirements and performance con- straints in software-defined optical networks, offering a balanced approach that improves container security while respecting the strict operational parameters of modern optical control systems.
Quantum chaos and critical behavior on a chip
Creators: name: Lambert, Neill
name: Chen, Yueh-nan
name: Johannsson, Robert
name: Nori, Franco
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The Dicke model describes N qubits (or two-level atoms) homogenously coupled to a bosonic mode. Here we examine an open-system realization of the Dicke model, which contains critical and chaotic behaviour. In particular, we extend this model to include an additional open transport qubit (TQ) (coupled to the bosonic mode) for passive and active measurements. We illustrate how the scaling (in the number of qubits N) of the superradiant phase transition can be observed in both current and current-noise measurements through the transport qubit. Using a master equation, we also investigate how the phase transition is affected by the back-action from the transport qubit and losses in the cavity. In addition, we show that the non-integrable quantum chaotic character of the Dicke model is retained in an open-system environment. We propose how all of these effects could been seen in a circuit QED system formed from an array of superconducting qubits, or an atom chip, coupled to a quantized resonant cavity (e.g., a microwave transmission line).
description: 7 pages
Naturally inflating on steep potentials through electromagnetic dissipation
Creators: name: Anber, Mohamed M.
name: Sorbo, Lorenzo
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In models of natural inflation, the inflaton is an axion-like particle. Unfortunately, axion potentials in UV-complete theories appear to be too steep to drive inflation. We show that, even for a steep potential, natural inflation can occur if the coupling between axion and gauge fields is taken into account. Due to this coupling, quanta of the gauge field are produced by the rolling of the axion. If the coupling is large enough, such a dissipative effect slows down the axion, leading to inflation even for a steep potential. The spectrum of perturbations is quasi-scale invariant, but in the simplest construction its amplitude is larger than $10^{-5}$. We discuss a possible way out of this problem.
description: 7 pages, some sections are extended, two appendices are added, few references are added.
A Higgs Test of Horizontal Symmetry
Creators: name: Lam, C. S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Identical interactions found in the three families of quarks and leptons suggest the presence of a horizontal symmetry. We discuss how such a symmetry can be tested by measuring the decay rates of Higgs into fermion pairs, and the Higgs production cross section. Depending on the details, there is a chance that the decay widths to the bottom-pair and the tau-pair may be down by more than a factor of 3 or more compared to the usual values, and the fusion production cross section of the Higgs also altered. Whatever the outcome, such a test also serves to constraint horizontal symmetry models.
description: version to be published in Physics Letters
L’ITALIANO NEO-STANDARD OGGI: STATO DELL’ARTE
Creators: name: Ballarè, Silvia
Publisher: name: Italiano LinguaDue
Year: 2021

description: In questo contributo si discute, con attenzione a aspetti teorici e empirici, la nozione di italiano neo-standard nel quadro sociolinguistico contemporaneo. Dopo aver introdotto di alcuni contributi che per primi hanno registrato la nascita di questa nuova varietà, si presenta il processo che ha portato l’emergere di un nuovo standard in Italia e la sua relazione rispetto al vecchio standard e agli standard regionali. Successivamente, si discute la compresenza del nuovo e del vecchio standard nella contemporaneità, anche considerando il diverso ruolo assunto dalle forze sociali che determinano cosa sia “standard” e alcuni recenti studi empirici che provano l’esistenza di queste due varietà da una prospettiva soggettiva e oggettiva. Infine, si presentano alcuni tratti linguistici che caratterizzano questa varietà, anche discutendo la loro traiettoria di movimento in relazione ai cambiamenti dall’alto e dal basso laboviani. Neo-standard Italian today: state of the art This paper discusses the notion of neo-standard Italian in today’s sociolinguistic scenario, paying attention to both theoretical and empirical aspects. After tracing the emergence of this new variety, the process that has led to the emergence of neo-standard Italian and its relationship with the old standard and regional standards is presented. The co-existence of new and old standards is discussed, taking into account the different roles played by social forces that determine what is “standard”, as well as recent empirical studies that show the existence of these two varieties from subjective and objective perspectives. Finally, some linguistic features that characterize this variety, also highlighting the trajectory in relation with the Labovian distinction of changes from above and from below, is discussed.
description: Italiano LinguaDue, V. 12 N. 2 (2020)
IL PROFILO DELLO STUDENTE CINESE DEI PROGRAMMI MARCO POLO E TURANDOT (2019)
Creators: name: Scolaro, Silvia
Publisher: name: Italiano LinguaDue
Year: 2021

description: Il presente contributo riporta i dati di una ricerca qualitativa sullo studente cinese afferente ai Programmi Marco Polo e Turandot. Dopo più di 10 anni dall’istituzione dei Programmi, lo studio mira a delineare un profilo dell’apprendente sinofono che intende proseguire i suoi studi accademici in Italia. In primo luogo si analizzano i dati anagrafici, la tipologia di famiglia di provenienza, si indagano i loro interessi, le percezioni su come si apprende una lingua e le tecniche di studio di una LS. Infine, rifacendosi a scale parametriche create e verificate da specifici studi del settore, si indagano alcuni aspetti psico-sociologici, iniziando dalle aspettative sugli studi futuri e sul lavoro, si prosegue indagando il role model, la proactive personality, la perseverance, il determinism e il coinvolgimento nelle questioni sociali. In fase conclusiva, attraverso l’analisi dei dati, si cerca di descrivere lo studente cinese contemporaneo che si iscrive ai Programmi Marco Polo e Turandot portando alla luce aspetti di cui si dovrebbe tener conto in fase di progettazione e di erogazione dei corsi di italiano propedeutici agli studi di Alta Formazione affinché essi possano essere più efficaci e tali apprendenti possano ottenere maggiore successo accademico. The Chinese student profile of the Marco Polo and Turandot programs (year 2019) The present work displays the data from a qualitative study which involved Chinese students who applied for the Marco Polo and Turandot Programs. More than 10 years after the establishment of the two programs, this study aims to outline a profile of the type of student who chooses Italy for higher education. Thus we examine features such as demographic data, the type of family and the students’ interests as well as their perception on how a foreign language is learned. Socio-psychological aspects, such as the expectations about their future studies and work, their role models, proactive personality, perseverance, determinism and engagement in social issues are investigated through specific parametric scales. Finally, thanks to the data gathered, it is possible to draw a profile of the contemporary Chinese student enrolling in the Marco Polo and Turandot Programs, bringing to light some factors that should be addressed when planning and issuing the preparatory Italian language courses to make them more effective so that the students are more successful in their academic studies in Italy.
description: Italiano LinguaDue, V. 12 N. 2 (2020)
Supplementary document for Carbon nanotube-based multiple source C-arm CT system: feasibility study with prototype system - 6705049.pdf
Creators: name: Moon, Seunghyuk
name: Kang, Jungsu
name: Kim, Youngkwang
name: Jo, Eunha
name: Jeong, Pilsoo
name: Roh, Youngjun
name: Baek, Jongduk
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Detail description of the calibration phantom and calibration algorithm
Strong coupling in extended Horava-Lifshitz gravity
Creators: name: Papazoglou, Antonios
name: Sotiriou, Thomas P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: An extension of Horava-Lifshitz gravity was recently proposed in order to address the pathological behavior of the scalar mode all previous versions of the theory exhibit. We show that even in this new extension the strong coupling persists, casting doubts on whether such a model can constitute an interesting alternative to general relativity (GR).
description: 4 pages; v2: minor changes and references added; v3: clarification regarding the strong coupling scale added; v4: version accepted for publication in PLB, addresses issues raised in arXiv:0912.0550
INSEGNAMENTO LINGUISTICO ED EMERGENZA SANITARIA: RIFLESSIONI SULLA DAD
Creators: name: Fragai, Eleonora
name: Fratter, Ivana
name: Jafrancesco, Elisabetta
Publisher: name: Italiano LinguaDue
Year: 2021

description: La prima fase di emergenza sanitaria determinata dal COVID-19 ha avuto come effetto l’avvio esteso di pratiche di didattica a distanza (DAD) nel settore educativo a ogni grado di istruzione e di formazione. Durante questa fase i docenti hanno avuto l’opportunità di confrontarsi, in modo più o meno consapevole, con ambienti di apprendimento non sempre familiari, affinando o sperimentando in alcuni casi per la prima volta approcci e-learning focalizzati sull’uso di risorse digitali per l’apprendimento a distanza. Il presente lavoro intende proporre alcune riflessioni sull’insegnamento dell'Italiano L2 online, maturate dall’analisi dei dati di un questionario elaborato attraverso lo strumento Moduli di Google Suite e somministrato online nel mese di maggio 2020 a docenti con profili professionali diversificati. L’esame delle risposte ai quesiti del questionario ha restituito informazioni quantitative e qualitative su atteggiamenti e comportamenti degli insegnanti. Tali informazioni sono state trattate nel contributo focalizzando l’attenzione su tre macroaree di interesse: modalità di interazione online e gestione della classe “virtuale”, formazione degli insegnanti e approcci adottati nell’e-learning, pratiche tradizionali e nuove modalità di valutazione. Language teaching and the health emergency: reflections on DL The first phase of the COVID-19 health emergency had a widespread effect on the start of distance learning practices (DL) in the educational sector at every level of education and on training. During this phase, teachers had the opportunity to deal, more or less consciously, with learning environments that were not always familiar, refining or experimenting in some cases for the first time with e-learning approaches focused on the use of digital resources for distance learning. The aim of this work is to offer some reflections on the teaching of Italian L2 online. These reflections are based on the analysis of data from a questionnaire developed using the Google Suite Modules tool, and conducted online in May 2020 with teachers with different professional profiles. The answers to the questionnaire returned quantitative and qualitative information on teacher attitudes and behaviors. This information presented in the article focuses on three macro areas of interest: online interaction methods and “virtual” classroom management, teacher training and e-learning approaches, traditional practices and new evaluation methods.
description: Italiano LinguaDue, V. 12 N. 2 (2020)
LA FORMAZIONE DEI DOCENTI DI ITALIANO L2 ALL’ESTERO: RISULTATI DI UN’INDAGINE INTERNAZIONALE
Creators: name: Cinganotto, Letizia
name: Turchetta, Barbara
Publisher: name: Italiano LinguaDue
Year: 2021

description: Il contributo fornisce una lettura dalla situazione attuale della didattica dell’Italiano L2 nel mondo, a partire da alcuni risultati di un’indagine condotta in ambito internazionale su un campione non censuario e non esaustivo di docenti di Italiano L2 in servizio all’estero. L’indagine focalizza l’attenzione sulla formazione dei docenti, con particolare riferimento alle aree dell’educazione linguistica, della didattica dell’Italiano L2, delle competenze digitali. Emerge un quadro molto ampio e variegato, che potrebbe fornire utili spunti di riflessione per la pianificazione di future iniziative formative sulla didattica dell’Italiano all’estero, con riferimento ai temi del translanguaging, particolarmente efficace in contesti multiculturali, multietnici e multilingui e ai temi del digitale e delle tecnologie multimediali e multimodali, in cui emergono forti bisogni formativi, peraltro confermati dalla recente didattica a distanza forzata dell’emergenza da COVID-19, che nonostante le numerose difficoltà, sembra aver comunque garantito qualità e successo formativo. Training of Italian L2 teachers abroad: results from an international survey This contribution provides an overview of the current situation regarding Italian L2 in the world, starting from the main results of a survey carried out at the international level on a non-censorious and non-exhaustive sample of Italian L2 teachers working abroad. The survey focuses on teacher training for teachers abroad, with particular reference to the areas of language education, Italian L2 and digital skills. A very wide and varied picture emerged from the survey, which provided useful food for thought for future teacher training initiatives, with reference to the topics of translanguaging, particularly effective in multicultural, multi-ethnic and multilingual contexts, as well digital, multimedia and multimodal technologies, for which strong training needs were identified. These needs were further reinforced by the recent, forced, remote teaching during lockdown due to the COVID-19 emergency. Despite the many difficulties teachers had to face, this seems to have nevertheless guaranteed educational quality and success.
description: Italiano LinguaDue, V. 12 N. 2 (2020)
Communicating Disease assessment student guide
Creators: name: Julien, Brianna
name: Lexis, Louise
Publisher: name: La Trobe
Year: 2020
Subjects: subject: 110316 Pathology (excl. Oral Pathology)
subject: FOS: Clinical medicine

description: Student guide to accompany the Communicating Disease assessment task that is part of the subject HBS3HPT Human Pathophysiology.
Residential burglary and repeat burglary victimisation in Tasmania
Creators: name: Goodwin, V
Publisher: name: University Of Tasmania
Year: 2023

description: This thesis presents the findings from one of the most comprehensive research studies on residential burglary undertaken to date in Australia. One of the key strengths of the study is the use of different methods to examine various aspects of the burglary problem in Tasmania. The study involved interviews with 60 imprisoned burglars, 50 repeat burglary victims, ten insurance industry representatives and ten police officers. In addition, police data relating to the residential burglaries committed in Southern Tasmania over the threeyear period from 2000-2002 were analysed, with a particular focus on six suburbs, three of which were public housing areas. The study makes an important empirical contribution to the existing research on burglary. The empirical findings relate to various aspects of the residential burglary problem in Tasmania, such as the different profile of burglary in public housing areas compared to other suburbs, the_nature and extent of repeat victimisation, the reasons why people make false reports to police, the nature and extent of insutance fraud and the main methods of disposal of stolen goods. The study also tests some of the theoretical assumptions about burglary, such as the importance ofthe drug-crime relationship, and the relevance of flag and boost accounts of repeat victimisation, and explores the extent to which burglars are rational decision-makers. The study provides a range of new insights into the burglary problem and confirms some of the findings from research conducted elsewhere. The analysis of the six suburbs reveals that both the burglary rate and the proportion of repeat burglaries are much higher in the three public housing areas. The high burglary rate in these areas is partly attributable to the large number of burglaries of vacant public housing dwellings, usually involving the theft of household items such as wood heaters, stoves and hot-water cylinders. Various research and policy implications emerge from the study, such as: the need to address police data quality issues; the need for greater clarification in defining what is meant by repeat burglary victimisation; the need to review public housing allocation policies and implement strategies to facilitate the development of social capital; the need to provide rehabilitative programs for offenders; the need for greater cooperation between the police and lhe insurance industry to enhance fraud prevention; and the potential benefit of focusing more attention on collecting forensic evidence at the burglary scene.
Some generalizations of nilpotence in ring theory
Creators: name: Biggs, Richard Gregory
Publisher: name: University of British Columbia
Year: 2011

description: The study of certain series of groups has greatly aided the development and understanding of group theory. Normal series and central series are particularly important. This paper attempts to define analogous concepts in the theory of rings and to study what interrelationships exist between them. Baer and Freidman have already studied chain ideals, the ring theory equivalent of accessible subgroups. Also, Kegel has studied weakly nilpotent rings, the ring theory equivalent of groups possessing upper central series. Some of the more important results of these authors are given in the first three sections of this paper. Power nilpotent rings, the ring theory equivalent of groups possessing lower central series, are defined in section 4. The class of power nilpotent rings is not homomorphically closed. However, it does possess many of the other properties that the class of weakly nilpotent rings has. In section 5 meta* ideal and U*-ring are defined in terms of descending chains of subrings of the given ring. Not every power nilpotent ring is a U*-ring. This is contrary to the result for semigroups. It is also shown that an intersection of meta* ideals is always a meta* ideal. It follows that not every meta* ideal is a meta ideal since the intersection of meta ideals is not always a meta ideal. Section 6 is concerned with rings in which only certain kinds of multiplicative decomposition take place. The rings studied here are called prime products rings and it is proved that all weakly nilpotent and power nilpotent rings are prime products rings. A result given in the section on U-rings suggests that all U-rings may be prime products rings. The class of prime products rings is very large but does not include any rings with a non-zero idempotent. The last section studies ring types which are defined analogously to group types. The study of which ring types actually occur is nearly completed here. Finally, it is shown that every weakly nilpotent ring has a ring type similar to that of some ring which is power nilpotent. This suggests (but does not prove) the conjecture that all weakly nilpotent rings are power nilpotent.
INTRODUCTION. AUTOBIOGRAPHIES LANGAGIÈRES: POUR UNE CONSCIENTISATION DES TRAJETS EXISTENTIELS ET PROFESSIONNELS DES ENSEIGNANTS
Creators: name: Blondeau, Nicole
name: Salvadori, Eleonora
Publisher: name: Italiano LinguaDue
Year: 2021

description: INTRODUCTION. AUTOBIOGRAPHIES LANGAGIÈRES: POUR UNE CONSCIENTISATION DES TRAJETS EXISTENTIELS ET PROFESSIONNELS DES ENSEIGNANTS
description: Italiano LinguaDue, V. 12 N. 2 (2020)