cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Lao and Assam jar sites: A landscape archaeology perspective.
Creators: name: Skopal, Nicholas
Publisher: name: The Australian National University
Year: 2024

description: The megalithic jar sites of Laos and Assam remain largely under-researched. While Colani led major archaeological investigations in Laos during the 1930's, further research in the country has been limited. In Assam, research on the megalithic sites has been almost non-existent aside from some minor surveys during the early 1900's by Mills and Hutton. Archaeological investigations by these scholars have primarily focused on the function of the sites as prehistoric burials. However, little research has focused on the people who made the jars; motivating factors associated with site selection; and if links exist between Lao and Assam jar sites. Recently, scholars such as Thakuria, Jameer, Luangkhoth, O'Reilly and Shewan have launched archaeological research projects in Laos and Assam seeking to answer many of these questions. This thesis complements their research from a landscape archaeology perspective, investigating site location to determine motivating factors for site selection in order to develop an understanding of the people that made the jars. To explore site placement, the author first conducted field surveys in Laos and Assam to confirm and locate jar sites. At each site, primary spatial data was obtained and applied in geographical information systems to discern patterns. This included the analysis of the sites' viewsheds, least cost paths, topography, spatial distribution, slope, aspect and proximity to watercourses. Interpretation of the results suggests that in both Laos and Assam, visibility, elevation and topographical prominence influenced jar site positioning. Additionally, this thesis identifies that the Lao jar builders were not inhibited by transportation costs, with evidence demonstrating their ability to gather the resources required to move such large megaliths through the landscape often through difficult terrain. Finally, the preliminary comparison between the siting of Assam and Lao jars in the landscape, suggests that these two cultures may have been related in some way with potentially similar cultural, political and ritual values and considerations at play.
Thorsten Burkard – Markus Schauer, Lehrbuch der lateinischen Syntax und Semantik
Creators: name: Weitz, Friedemann
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Thorsten Burkard – Markus Schauer, Lehrbuch der lateinischen Syntax und Semantik. Begründet von Hermann Menge. Darmstadt: Wissenschaftliche Buchgesellschaft, 5., durchgesehene und verbesserte Auflage 2012, XLII + 1018 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 16 (2013): Göttinger Forum für Altertumswissenschaft
SHREC 2021: Retrieval and classification of protein surfaces equipped with physical and chemical properties
Creators: name: Raffo, Andrea
name: Fugacci, Ulderico
name: Biasotti, Silvia
name: Rocchia, Walter
name: Liu, Yonghuai
name: Otu, Ekpo
name: Zwiggelaar, Reyer
name: Hunter, David
name: Zacharaki, Evangelia I.
name: Psatha, Eleftheria
name: Laskos, Dimitrios
name: Arvanitis, Gerasimos
name: Moustakas, Konstantinos
name: Aderinwale, Tunde
name: Christoffer, Charles
name: Shin, Woong-Hee
name: Kihara, Daisuke
name: Giachetti, Andrea
name: Nguyen, Huu-Nghia
name: Nguyen, Tuan-Duy
name: Nguyen-Truong, Vinh-Thuyen
name: Le-Thanh, Danh
name: Nguyen, Hai-Dang
name: Tran, Minh-Triet
Publisher: name: arXiv
Year: 2021
Subjects: subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences
subject: I.3.8; I.6.3; J.3

description: This paper presents the methods that have participated in the SHREC 2021 contest on retrieval and classification of protein surfaces on the basis of their geometry and physicochemical properties. The goal of the contest is to assess the capability of different computational approaches to identify different conformations of the same protein, or the presence of common sub-parts, starting from a set of molecular surfaces. We addressed two problems: defining the similarity solely based on the surface geometry or with the inclusion of physicochemical information, such as electrostatic potential, amino acid hydrophobicity, and the presence of hydrogen bond donors and acceptors. Retrieval and classification performances, with respect to the single protein or the existence of common sub-sequences, are analysed according to a number of information retrieval indicators.
Archive Apparitions
Creators: name: DeCourcy, Elisa
Publisher: name: The Australian National University
Year: 2022

description: I am the primary author of this exhibition catalogue, which is research informed and referenced. It was written in conjunction with a series of portraits I made in collaboration that consider the history and personalities of early colonial Australian photography. Each portrait has an extended entry situating it historically, and in relation to Australian collection material. Honorary Associate Professor Martyn Jolly (ANU) wrote a concluding reflective essay
Christian Zgoll, Römische Prosodie und Metrik. Ein Studienbuch mit Audiodateien
Creators: name: Weitz, Friedemann
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Christian Zgoll, Römische Prosodie und Metrik. Ein Studienbuch mit Audiodateien. Darmstadt: Wissenschaftliche Buchgesellschaft 2012, 215 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 16 (2013): Göttinger Forum für Altertumswissenschaft
Many-body exchange-correlation effects in graphene
Creators: name: Hwang, E. H.
name: Hu, Ben Yu-Kuang
name: Sarma, S. Das
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We calculate, within the leading-order dynamical-screening approximation, the electron self-energy and spectral function at zero temperature for extrinsic (or gated/doped) graphene. We also calculate hot carrier inelastic scattering due to electron-electron interactions in graphene. We obtain the inelastic quasiparticle lifetimes and associated mean free paths from the calculated self-energy. The linear dispersion and chiral property of graphene gives energy dependent lifetimes that are qualitatively different from those of parabolic-band semiconductors.
description: Submitted on July 8, 2007 to EP2DS-17, Genova, Italy
Fitting $f(Q,T)$ gravity models with a $Λ$CDM limit using H(z) and Pantheon data
Creators: name: Nájera, Antonio
name: Fajardo, Amanda
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We proposed five $f(Q,T)$ models, which are an extension of symmetric teleparallel gravity, where $Q$ is the non-metricity and $T$ is the trace of the stress-energy tensor. By taking specific values of their parameters, these models have a $Λ$CDM limit. Using cosmic chronometers and supernovae Ia data, we found that our models are consistent with $Λ$CDM at a 95\% confidence level. To see whether one of these models can challenge $Λ$CDM at a background perspective, we computed the Bayesian evidence for them and $Λ$CDM. According to it, the concordance model is preferred over four of them, showing a weak preference against $f(Q,T) = -Q/G_N + bT$ and $f(Q,T) = -(Q+2Λ)/G_N +bT$, a substantial preference against $f(Q,T) = -(Q+2 H_0^2 c (Q/(6H_0^2))^{n+1})/G_N + bT $, and a strong preference against $f(Q,T) = -(Q+2H_0^2c(Q/(6H_0^2))^{n+1} + 2Λ)/G_N + bT$. Interestingly, a model includying a $T^2$ dependence ($f(Q,T) = -(Q+2Λ)/G_N - ((16π)^2 G_N b)/(120 H_0^2) T^2$) showed a {substantial} preference against $Λ$CDM. {Therefore, we encourage further analyses of this model to test its viability outside the background perspective.}
description: V3: Accepted version in Physics of the Dark Universe. Minor changes plus corrections in the results of the sixth model
An investigation of structure in a turbulent boundary layer developing on a smooth wall
Creators: name: MacAulay, Phillip N.
Publisher: name: University of British Columbia
Year: 2010

description: The structure of a stable smooth wall zero pressure gradient turbulent boundary layer is investigated experimentally in order to determine the dominant outer region structure and to develop a hypothetical generalized boundary layer flow model. Three hot wire configurations, two vertically separated X-wires and a leading straight wire, a horizontal rake of 5 straight wires, and a vertical rake of 5 straight wires were used in the experiments, conducted at Reɵ = 8200. The basis for data reduction procedures came from crosscorrelations and the Variable Interval Time Average (VITA) technique. Three structure types are reported in the literature to be important: streaks and counter rotating streamwise vorticity, wall scaled hairpins or ring vortices, and large scale (0(ઠ)) bulges. A simple pictorial model consisting of three Reɵ dependent interdeveloping stages, which integrate all three structure types, is presented and discussed in relation to the literature and experiments performed. The rake data indicate that the positive ([formula omitted]u/[formula omitted]t) VITA detected velocity front has a scale much larger than that of the wall scaled eddies which typically have a scale of 100-300 y[formula omitted], and that this velocity front exhibits characteristics that are consistent with the trailing velocity front described in the model. The general convection velocity from basic crosscorrelations and the convection velocity of the positive VITA detected velocity front both had values 90-100% of the local mean velocity over most of the boundary layer. Evidence of small scale structure concentration on the downstream edge of the trailing velocity front is presented. A new method used to determine the average structure inclination angle associated with the trailing velocity front is presented and demonstrates that the generalized structure inclination angle, calculated from basic crosscorrelations between vertically separated sensors, does not indicate structure shape, but is associated with the bulk flow associated with the structure. The new method appears to give results that are consistent with flow visualization and more accurately estimates the inclination angle associated with the most dominant feature of the outer flow, the positive VITA velocity front. Although the model presented is somewhat crude and further development and refinement are required, the model appears to agree with most data in the literature, as well as the present experimental results.
Can pulsational instabilities impact a massive star's rotational evolution?
Creators: name: Townsend, Rich
name: MacDonald, Jim
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate whether angular momentum transport due to unstable pulsation modes can play a significant role in the rotational evolution of massive stars. We find that these modes can redistribute appreciable angular momentum, and moreover trigger shear-instability mixing in the molecular weight gradient zone adjacent to stellar cores, with significant evolutionary impact.
description: 6 pages, to appear in Proc. IAU Symposium 250: Massive Stars as Cosmic Engines
Trajan, sein Pferd, sein Triumph und ein verschlungener Weg zu den Göttern
Creators: name: Kersten, Markus
name: Syré, Evelyn
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 16 (2013): Göttinger Forum für Altertumswissenschaft
Melchior Cano ‚De locis theologicis‘ – Neue Überlegungen zur Entstehung
Creators: name: Hogenmüller, Boris
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 16 (2013): Göttinger Forum für Altertumswissenschaft
A Search for correlations between turbulence and star formation in LITTLE THINGS dwarf irregular galaxies
Creators: name: Hunter, Deidre A.
name: Elmegreen, Bruce G.
name: Archer, Haylee
name: Simpson, Caroline E.
name: Cigan, Phil
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Turbulence has the potential for creating gas density enhancements that initiate cloud and star formation (SF), and it can be generated locally by SF. To study the connection between turbulence and SF, we looked for relationships between SF traced by FUV images, and gas turbulence traced by kinetic energy density (KED) and velocity dispersion ($v_{disp}$) in the LITTLE THINGS sample of nearby dIrr galaxies. We performed 2D cross-correlations between FUV and KED images, measured cross-correlations in annuli to produce correlation coefficients as a function of radius, and determined the cumulative distribution function of the cross correlation value. We also plotted on a pixel-by-pixel basis the locally excess KED, $v_{disp}$, and HI mass surface density, $Σ_{\rm HI}$, as determined from the respective values with the radial profiles subtracted, versus the excess SF rate density $Σ_{\rm SFR}$, for all regions with positive excess $Σ_{\rm SFR}$. We found that $Σ_{\rm SFR}$ and KED are poorly correlated. The excess KED associated with SF implies a $\sim0.5$% efficiency for supernova energy to pump local HI turbulence on the scale of resolution here, which is a factor of $\sim2$ too small for all of the turbulence on a galactic scale. The excess $v_{disp}$ in SF regions is also small, only $\sim0.37$ km s$^{-1}$. The local excess in $Σ_{\rm HI}$ corresponding to an excess in $Σ_{\rm SFR}$ is consistent with an HI consumption time of $\sim1.6$ Gyr in the inner parts of the galaxies. The similarity between this timescale and the consumption time for CO implies that CO-dark molecular gas has comparable mass to HI in the inner disks.
description: In press in the Astronomical Journal
Ein literarisches Akrostichon aus der ersten Hälfte des vierten Jahrhunderts v. Chr.?
Creators: name: Schubert, Christoph
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 16 (2013): Göttinger Forum für Altertumswissenschaft
Acabonack Harbor Canoe Race Route Map with Drawn Markers
Creators: name: Unknown
name: Springs Historical Society/Library
Publisher: name: Unknown
Year: 0
Subjects: Springs
East Hampton
Maps
Canoes
Regattas

description: This map shows the highlight route for the Great Bonac Canoe Race within Acabonack Harbor.
description: This material was lent to the Long Island Collection by the Springs Historical Society Library for digitization purposes.
Universal Effective Medium Theory to Predict the Thermal Conductivity in Nanostructured Materials
Creators: name: Hosseini, S. Aria
name: Khanniche, Sarah
name: Greaney, P. Alex
name: Romano, Giuseppe
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Nanostructured materials enable high thermal transport tunability, holding promises for thermal management and heat harvesting applications. Predicting the effect that nanostructuring has on thermal conductivity requires models, such as the Boltzmann transport equation (BTE), that capture the non-diffusive transport of phonons. Although the BTE has been well validated against several key experiments, notably those on nanoporous materials, its applicability is computationally expensive. Several effective model theories have been put forward to estimate the effective thermal conductivity; however, most of them are either based on simple geometries, e.g., thin films, or simplified material descriptions such as the gray-model approximation. To fill this gap, we propose a model that takes into account the whole mean-free-path (MFP) distribution as well as the complexity of the material's boundaries in infinitely thick films with extruded porosity using uniparameter logistic regression. We validate our approach, which is called the "Ballistic Correction Model" (BCM), against full BTE simulations of a selection of three base materials (GaAs, InAs, and Si) with nanoscale porosity, obtaining excellent agreement. While the key parameters of our method, associated with the geometry of the bulk material, are obtained from the BTE, they can be decoupled and used in arbitrary combinations and scales. We tabulated these parameters for a few cases, enabling the exploration of systems that are beyond those considered in this work. Providing a simple yet accurate estimation of thermal transport in nanostructures, our work sets out to accelerate the discovery of materials for thermal-related applications.
On the effect of helium enhancement on bolometric corrections and Teff-colour relations
Creators: name: Girardi, L.
name: Castelli, F.
name: Bertelli, G.
name: Nasi, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We evaluate the effects that variations in He content have on bolometric corrections and Teff-colour relations. To this aim, we compute ATLAS9 model atmospheres and spectral energy distributions for effective temperatures ranging from 3500 K to 40000 K for dwarfs and from 3500 K to 8000 K for giants, considering both ``He-non enhanced'' and ``He-enhanced'' compositions. The considered variations in He content are of DeltaY = +0.1 and +0.2 for the metallicity [M/H]=+0.5 and DeltaY=+0.1 for [M/H]=-0.5 and -1.5. Then, synthetic photometry is performed in the UBVRIJHK system. We conclude that the changes in bolometric corrections, caused by the adopted He-enhancements are in general too small (less than 0.01 mag), for both dwarfs and giants, to be affecting present-day tables of bolometric corrections at a significant level. The only possible exceptions are found for the U-band at Teff between 4000 K and 8000 K, where |Delta BC_U| amounts to ~0.02 mag, and for Teff equal to 3500 K, where |Delta BC_lambda| values become clearly much higher (up to 0.06 mag for passbands from U to V). However, even in the latter case the overall uncertainty caused by variations in the He content may be not so significant, because the ATLAS9 results are still approximative at their lowest temperature limit.
description: 6 pages, to appear in Astronomy & Astrophysics
Spent Convictions Scheme: Steps of the legal analysis
Creators: name: Stammers, Mira
Publisher: name: Zenodo
Year: 2019
Subjects: Australian spent convictions scheme
Legal analysis

description: Legislation relating to spent convictions in Australia is complex and inconsistent. Other than Victoria, which does not have a legislated spent conviction scheme, each jurisdiction has a different legislative regime to determine whether a conviction becomes hidden from public view after a set period of time. The multifaceted and varying nature of these jurisdictional regimes weighs heavily on government resources. Currently, Australian police agencies and accredited bodies manually screen criminal records data and making decisions about whether to disclose spent convictions. During 2016-2017, 4.74 million checks were processed, of which 1.42 million were sent for further analysis. Importantly, automated technical solutions using Compliance through Design (CtD) modelling has the possibility of unburdening government agencies of this time-consuming responsibility. To demonstrate a proof of concept on Compliance through Design modelling, a sample use case was analysed, and legal analysis steps were determined. These steps were then used to form the basis of the computational modelling. This deliverable provides an overview of the steps of the legal analysis.
description: DC25008: Compliance by Design (CbD) and Compliance through Design (CtD) solutions to support automated information sharing (2018-19). Law and Policy. Project C. Spent Convictions Use Case. Australian Government funded Data to Decisions Cooperative Research Centre (2018-2019), end-user: Australian Criminal Intelligence Commission.
In silico design of metal-dielectric nanocomposites for solar energy applications
Creators: name: Trice, Justin
name: Garcia, Hernando
name: Sureshkumar, Radhakrishna
name: Kalyanaraman, Ramki
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Recently, a homogenization procedure has been proposed, based on the tight lower bounds of the Bergman-Milton formulation, and successfully applied to dilute ternary nanocomposites to predict optical data without using any fitting parameters [Garcia et al. Phys. Rev. B, 75, 045439 (2007)]. The procedure has been extended and applied to predict the absorption coefficient of a quaternary nanocomposite consisting of Cu, Ag, and Au nanospheres embedded in a SiO2 host matrix. Significant enhancement of the absorption coefficient is observed over the spectral range 350-800 nm. The magnitude of this enhancement can be controlled by varying the nanosphere diameter and the individual metal volume fraction with respect to the host matrix. We have determined the optimal composition resulting in enhanced broadband (350nm-800nm) absorption of the solar spectrum using a simulated annealing algorithm. Fabricating such composite materials with a desired optical absorption has potential applications in solar energy harvesting.
description: submitted to SPIE Optics+Photonics, 2007
Atene in età adrianea: la funzione ecumenica della 'pólis' nell’ideologia del principato
Creators: name: Giudice, Alberto
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 16 (2013): Göttinger Forum für Altertumswissenschaft
High-precision Quantum Transmitometry of DNA and Methylene-Blue using a Frequency-Entangled Twin-Photon Beam in Type-I SPDC
Creators: name: Motazedifard, Ali
name: Madani, S. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Using the coincidence-count (CC) measurement of the generated frequency-entangled twin-photons beam (TWB) via the process of type-I spontaneous parametric-down conversion (SPDC) in BBO nonlinear crystal (NLC), we have precisely measured the transmittance of very diluted Rabbit- and Human-DNA, Methylene-Blue (MB), as a disinfectant, and thin-film multilayer at near IR wavelength 810nm with an accuracy in order of $\% 0.01 $ due to the quantum correlation, while accuracy of classical-like measurement, single-count (SC), is in order of $\% 0.1 $ in our setup. Moreover, using quantum measurement of the transmittance, the different types of DNA with the same concentration, and also very diluted (in order of pg/$ μ$l) different concentrations of DNA and MB solutions are distinguished and detected with high-reliability. Interestingly, in case of Human-DNA samples in contrast to our classical-like measurement we could precisely detect and distinguish two very diluted concentrations $ 0.01\rm ng/μl $ and $ 0.1\rm ng/μl $ with high reliability while commercial standard spectrometer device of our DNA-manufacturer never could detect and distinguish them. Surprisingly, measurement on the thin-film multilayer illustrates that the introduced method in this work might be performed to cancer/brain tissues or Stem cells for cancer therapy, and may hopefully open a pave and platform for non-invasive quantum diagnosis in future.
description: This is the first quantum optical experiment in IRAN in the context of quantum sensing and measurement and in the field of quantum biology and quantum diagnosis ; 21 pages; 4 figures; 3 tables
Statistical inference in stochastic/deterministic epidemic models to jointly estimate transmission and severity
Creators: name: Corbella, Alice
Publisher: name: Apollo - University of Cambridge Repository
Year: 2019
Subjects: Bayesian Methods
Evidence Synthesis
Monte Carlo methods
State-space models
Epidemic models
Infectious disease dynamics
Multiple data
Transmission
Severity
Influenza

description: This thesis explores the joint estimation of transmission and severity of infectious diseases, focussing on the specific case of influenza. Transmission governs the speed and magnitude of viral spread in a population, while severity determines morbidity and mortality and the resulting effect on health care facilities. Their quantification is crucial to inform public health policies, motivating the routine collection of data on influenza cases. The estimation of severity is compromised by the high degree of censoring affecting the data early during the epidemic. The challenge of estimating transmission is that each influenza data source is often affected by noise and selection bias and individually provides only partial information on the underlying process. To address severity estimation with high censored data, new methods, inspired by demographic models and by parametric survival analysis, are formulated. A comprehensive review of these methods and existing methods is also carried out. To jointly estimate transmission and severity, an initial Bayesian epidemic model is fitted to historical data on severe cases, assuming a deterministic severity process and using a single data source. This model is then extended to describe a more stochastic and hence more realistic process of severe events, with the data generating process governed by hidden random variables in a state-space framework. Such increased realism necessitates the use of multiple data sources to enhance parameter identifiability, in a Bayesian evidence synthesis context. In contrast to the literature in the field, the model introduced accounts for dependencies between datasets. The added stochasticity and unmeasured dependencies result in an intractable likelihood. Inference therefore requires a new approach based on Monte Carlo methods. The method proposed proves its potential and usefulness in the concluding application to real data from the latest (2017/18) epidemic of influenza in England.
description: MRC PhD scholarship Cambridge Philosophical Society scholarship
Accuracy of state space collapse for earliest-deadline-first Queues
Creators: name: Kruk, Łukasz
name: Lehoczky, John
name: Shreve, Steven
Publisher: name: arXiv
Year: 2006
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K25 (Primary) 60G57, 60J65, 68M20 (Secondary)

description: This paper presents a second-order heavy traffic analysis of a single server queue that processes customers having deadlines using the earliest-deadline-first scheduling policy. For such systems, referred to as real-time queueing systems, performance is measured by the fraction of customers who meet their deadline, rather than more traditional performance measures, such as customer delay, queue length or server utilization. To model such systems, one must keep track of customer lead times (the time remaining until a customer deadline elapses) or equivalent information. This paper reviews the earlier heavy traffic analysis of such systems that provided approximations to the system's behavior. The main result of this paper is the development of a second-order analysis that gives the accuracy of the approximations and the rate of convergence of the sequence of real-time queueing systems to its heavy traffic limit.
description: Published at http://dx.doi.org/10.1214/105051605000000809 in the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
A thermoelastic theory with microtemperatures of type III
Creators: name: Aouadi, Moncef
name: Ciarletta, Michele
name: Passarella, Francesca
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In this paper, we use the Green-Naghdi theory of thermomechanics of continua to derive a nonlinear theory of thermoelasticity with microtemperatures of type III. This theory permits propagation of both thermal and microtemperatures waves at finite speeds with dissipation of energy. The equations of the linear theory are also obtained. With the help of the semigroup theory of linear operators we establish that the linear anisotropic problem is well posed and we study the asymptotic behavior of the solutions. Finally, we investigate the impossibility of the localization in time of solutions.
description: arXiv admin note: text overlap with arXiv:2103.10753
Reorganization of mitochondrial architecture during apoptosis and mitophagy as investigated by correlative microscopy
Creators: name: Ader, Nicholas
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: cell biology
structural biology
apoptosis
electron cryo-tomography
CLEM
Bax
cryo focused ion beam
mitochondria
parkin
mitophagy
autophagy

description: In this thesis, I detail the use of various forms of correlative microscopy to investigate reorganization of mitochondrial architecture during two processes, apoptosis and mitophagy, in an effort to better understand the contribution of membrane remodeling to these biological processes. During apoptosis, Bax/Bak oligomerize and accumulate in and adjacent to the outer mitochondrial membrane, resulting in outer membrane ruptures several hundred nanometers wide. Using correlative microscopy, it was found that Bax clusters accumulated next to outer membrane ruptures and appeared to be amorphous. Electron cryo-tomography of vitreous cells was used to discern a higher-order organization to cluster components. In these near- native conditions, Bax clusters appeared to contain a sponge-like meshwork, suggesting that components of the outer membrane may be bound by Bax and then sequestered in the cytosol. Mitochondria with outer membrane ruptures presented a diverse array of inner membrane morphologies, such as dilution of the matrix and cristae unfolding. This unfolding was found to be linked to a loss of typical ATP synthase dimer organization. A new, comprehensive model of Bax-mediated apoptosis is presented, linking molecular reorganizations of the inner membrane with sequestration of outer membrane components into Bax clusters in an interplay to drive rupture formation. In mitophagy, the PINK1 kinase is stabilized on the outer mitochondrial membrane, where it recruits Parkin. Parkin then ubiquitinates a host of outer membrane proteins, targeting a mitochondrion for autophagy. While most literature details a wholesale removal of all mitochondria from a cell, recent work describes a localized form of mitophagy that removes selective parts of the network. Mitochondria targeted by Parkin during localized mitophagy were observed, and this process was compared between cells intact for Drp1, the mitochondrial fission protein, and those with Drp1 knocked out. Fluorescently-tagged Parkin was found on mitochondrial fragments, mitochondria-containing autophagosomes, and mitochondria-containing lysosomes. In both lines, the fragmentation that led to isolation of a mitochondrion targeted for degradation occurred prior to the recruitment of autophagic machinery. In some cases, mitochondria surrounded by multiple autophagosomes were observed. These results reveal new details on the tight link between mitochondrial membrane dynamics and the functional state of the mitochondrion. Overall, I present a thesis that describes the insights into mitochondrial biology gained from various correlative microscopy approaches.
description: Marshall Aid Commemoration Commission, The International Biomedical Research Alliance, the NIH OxCam Program, the MRC LMB, and Hughes Hall.
Error estimates for the Smagorinsky turbulence model: enhanced stability through scale separation and numerical stabilization
Creators: name: Burman, Erik
name: Hansbo, Peter
name: Larson, Mats G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 65M12, 76F65

description: In the present work we show some results on the effect of the Smagorinsky model on the stability of the associated perturbation equation. We show that in the presence of a spectral gap, such that the flow can be decomposed in a large scale with moderate gradient and a small amplitude fine scale with arbitratry gradient, the Smagorinsky model admits stability estimates for perturbations, with exponential growth depending only on the large scale gradient. We then show in the context of stabilized finite element methods that the same result carries over to the approximation and that in this context, for suitably chosen finite element spaces the Smagorinsky model acts as a stabilizer yielding close to optimal error estimates in the $L^2$-norm for smooth flows in the pre-asymptotic high Reynolds number regime.
Numerical method for binary black hole/neutron star initial data: Code test
Creators: name: Tsokaros, Antonios A.
name: Uryu, Koji
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A new numerical method to construct binary black hole/neutron star initial data is presented. The method uses three spherical coordinate patches; Two of these are centered at the binary compact objects and cover a neighborhood of each object; the third patch extends to the asymptotic region. As in the Komatsu-Eriguchi-Hachisu method, nonlinear elliptic field equations are decomposed into a flat space Laplacian and a remaining nonlinear expression that serves in each iteration as an effective source. The equations are solved iteratively, integrating a Green's function against the effective source at each iteration. Detailed convergence tests for the essential part of the code are performed for a few types of selected Green's functions to treat different boundary conditions. Numerical computation of the gravitational potential of a fluid source, and a toy model for a binary black hole field are carefully calibrated with the analytic solutions to examine accuracy and convergence of the new code. As an example of the application of the code, an initial data set for binary black holes in the Isenberg-Wilson-Mathews formulation is presented, in which the apparent horizons are located using a method described in Appendix A.
description: 19 pages, 18 figures
Living Together: A Capability Approach to Spatially Segregated Areas of Bogota
Creators: name: Bucheli Guevara, Juan Fernando
Publisher: name: Apollo - University of Cambridge Repository
Year: 2019
Subjects: Capability approach
neighbourhood effects
spatial justice
young adults
urban fragmentation
Bogota

description: The rapid and ongoing process of urbanisation in Bogota has brought about significant socio-spatial segregation between city-dwellers. Such segregation is becoming increasingly complex as patterns of fragmentation are evolving towards a more ‘cellular’ differentiation between rich and poor –urban segregation which changes in terms of scale: from macro (neighbourhoods) to micro scales (blocks, streets). Urban segregation has been associated as a barrier for disadvantaged communities, especially when it becomes an intensifier of inequalities. Unequal access to services, availability of local employment, urban facilities, opportunities and supportive social relationships are examples of how segregation affects the distribution of quality of life, undermines attempts for social inclusion and, ultimately, creates unjust geographies. Alongside this context, public policy and measurements of quality of life have frequently overlooked spatial contexts of inequalities since a utility-based definition of well-being is often taken for granted. With the city of Bogota as a testing ground, this thesis analyses how and to what extent new patterns of urban segregation affect the distribution of capabilities and quality of life among young adults. Based on a capability place-based approach to well-being, this research will attempt to conceptualise urban quality of life, look at how patterns of urban segregation affect urban functionings, and quantify to what extent microsegregation explains differentials in capability achievement of quality of life among young adults in Bogota.
Il discorso di Bruto (BC 2.19.138-140) e l’introduzione ai Bella Civilia (BC 1.1.7-8) in Appiano: studio sulla comunicazione appianea
Creators: name: Santamato, Emanuele
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 16 (2013): Göttinger Forum für Altertumswissenschaft
Sull’uso di συμβάλλομαι e di συλλαμβάνω nella lingua di Erodoto
Creators: name: Lembo, Domenico
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 16 (2013): Göttinger Forum für Altertumswissenschaft
Nuove riflessioni sul 'Pap.Vat.Gr. 11 verso': Favorino, '[L'esilio]'
Creators: name: Tepedino Guerra, Adele
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 16 (2013): Göttinger Forum für Altertumswissenschaft
Forschungen über die rechtlichen Grundlagen der römischen Außenbeziehungen während der Republik bis zum Beginn des Prinzipats
Creators: name: Zack, Andreas
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 16 (2013): Göttinger Forum für Altertumswissenschaft
Zur Rolle des Patriarchen von Konstantinopel bei der Erhebung eines Kaisers im 5. u. 6. Jhd.
Creators: name: Szidat, Joachim
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 16 (2013): Göttinger Forum für Altertumswissenschaft
Case Law on Spent Convictions: Analysis
Creators: name: O'Toole, Suzanne
name: Keyzer, Patrick
Publisher: name: Zenodo
Year: 2019
Subjects: Spent convictions case law
Frugtniet v Australian Securities and Investments Commission

description: Under federal legislation, if a person's conviction for a Commonwealth (or Territory) offence is more than ten years old, the person is not required to disclose to any person, the fact that the person has been charged with, or convicted of, the offence. Further, if a person's conviction of a State (or foreign) offence is more than ten years old, the person is not required to disclose to any Commonwealth authority in a State (or in a foreign country), the fact that the person has been charged with, or convicted of, the offence. Spent conviction rules are important to ensure that people are not tainted by the stigma associated with prior criminal conviction. Spent conviction provisions also ensure that people have behaved lawfully for a substantial period of time before they are able to resume full participation in society. Spent conviction laws also operate in State and Territory jurisdictions in Australia. The law governing spent convictions is particularly important to people seeking a federal professional licence, such as to be a tax agent, migration agent, or to provide credit services under federal law. It is important because applicants for these licences need to demonstrate that they are a “fit and proper person” to hold such a licence. A criminal conviction would ordinarily disqualify a person from complying with that requirement. This paper explores the operation of the spent convictions legislation in federal law. It is clear that federal legislation ensures that federal agencies cannot have regard to spent convictions when making a determination that a person is fit and proper. However it is equally clear that federal criminal law authorises appellate tribunals, such as the Administrative Appeals Tribunal, to have regard to any matter that they think is relevant when considering an appeal from an unsuccessful applicant, and, paradoxically, that can include a person’s spent convictions. This anomalous position has been confirmed in a decision of the Federal Court and a decision of the Full Court of the Federal Court. In practical terms, this undermines the efficacy of the federal spent convictions legislation, from the perspective of the person affected. It means that if a person contests an agency determination that they are not a fit and proper person, the agency need only appeal to the Administrative Appeals Tribunal or a court, which can then have regard to the spent convictions as an otherwise relevant matter. The spent convictions provision will therefore only be relevant to persons who seek to rely on it in circumstances where no appeal is taken.
description: DC25008: Compliance by Design (CbD) and Compliance through Design (CtD) solutions to support automated information sharing (2018-19). Law and Policy. Project C. Spent Convictions Use Case. Australian Government funded Data to Decisions Cooperative Research Centre (2018-2019), end-user: Australian Criminal Intelligence Commission.
Quantum Energy Teleportation in Spin Chain Systems
Creators: name: Hotta, Masahiro
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a protocol for quantum energy teleportation which transports energy in spin chains to distant sites only by local operations and classical communication. By utilizing ground-state entanglement and notion of negative energy density region, energy is teleported without breaking any physical laws including causality and local energy conservation. Because not excited physical entity but classical information is transported in the protocol, the dissipation rate of energy in transport is expected to be strongly suppressed.
description: 22 pages, 4 figure, to be published in JPSJ
Analytical WKB theory for high-harmonic generation and its application to massive Dirac electrons
Creators: name: Taya, Hidetoshi
name: Hongo, Masaru
name: Ikeda, Tatsuhiko N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose an analytical approach to high-harmonic generation (HHG) for nonperturbative low-frequency and high-intensity fields based on the (Jeffreys-)Wentzel-Kramers-Brillouin (WKB) approximation. By properly taking into account Stokes phenomena of WKB solutions, we obtain wavefunctions that systematically include the repetitive dynamics of production and acceleration of electron-hole pairs and quantum interference due to phase accumulation between different pair production times (Stückelberg phase). Using the obtained wavefunctions without relying on any phenomenological assumptions, we explicitly compute electric current (including intra- and inter-band contributions) as the source of HHG for a massive Dirac system in (1+1)-dimensions under an ac electric field. We demonstrate that the WKB approximation agrees well with numerical results obtained by solving the time-dependent Schrödinger equation and point out that the quantum interference is important in HHG. We also predict in the deep nonperturbative regime that (1) harmonic intensities oscillate with respect to electric-field amplitude $E_0$ and frequency $Ω$, with a period determined by the Stückelberg phase; (2) the cutoff order of HHG is determined by $2eE_0/\hbar Ω^2$, with $e$ being the electron charge; and that (3) non-integer harmonics, controlled by the Stückelberg phase, appear as a transient effect. Our WKB theory is particularly suited for a parameter regime, where the Keldysh parameter $γ=(Δ/2)Ω/eE_0$, with $Δ$ being the gap size, is small. This parameter regime corresponds to intense lasers in the terahertz regime for realistic massive Dirac materials. Our analysis implies that the so-called HHG plateau can be observed at the terahertz frequency within the current technology.
description: 5+5 pages, 3 figures; v2: discussion on cutoff law improved, experimental realization with terahertz lasers discussed, to be published in PRB Letter
'petis, ut tibi ... scribam ...' (Plinius epist. 6,16 und 20)
Creators: name: Beck, Jan-Wilhelm
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Göttinger Forum für Altertumswissenschaft, Bd. 16 (2013): Göttinger Forum für Altertumswissenschaft
Arnd Hennemeyer, Das Athenaheiligtum von Priene: die Nebenbauten – Altar, Halle und Propylon – und die bauliche Entwicklung des Heiligtums
Creators: name: Hellner, Nils
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Arnd Hennemeyer, Das Athenaheiligtum von Priene: die Nebenbauten – Altar, Halle und Propylon – und die bauliche Entwicklung des Heiligtums. Archäologische Forschungen Bd. 27. Wiesbaden: Reichert Verlag 2013, 280 S., 170 Taf. und 9 Faltpläne in rückwärtiger Tasche
description: Göttinger Forum für Altertumswissenschaft, Bd. 17 (2014): Göttinger Forum für Altertumswissenschaft
Pierluigi Leone Gatti, Ovid in Antike und Mittelalter. Geschichte der philologischen Rezeption
Creators: name: Lingenberg, Wilfried
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Pierluigi Leone Gatti, Ovid in Antike und Mittelalter. Geschichte der philologischen Rezeption. Hermes Einzelschriften Bd. 106. Stuttgart: Franz Steiner Verlag 2014, 260 S., 15 Taf.
description: Göttinger Forum für Altertumswissenschaft, Bd. 17 (2014): Göttinger Forum für Altertumswissenschaft
Correlations between H$α$ Equivalent Width and Galaxy Properties at $z = 0.47$: Physical or Selection-driven?
Creators: name: Khostovan, Ali Ahmad
name: Malhotra, Sangeeta
name: Rhoads, James E.
name: Harish, Santosh
name: Jiang, Chunyan
name: Wang, Junxian
name: Wold, Isak
name: Zheng, Zhen-Ya
name: Barrientos, L. Felipe
name: Coughlin, Alicia
name: Hu, Weida
name: Infante, Leopoldo
name: Perez, Lucia A.
name: Pharo, John
name: Valdes, Francisco
name: Walker, Alistair R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The H$α$ equivalent width (EW) is an observational proxy for specific star formation rate (sSFR) and a tracer of episodic star-formation activity. Previous assessments show that EW strongly anti-correlates with stellar mass as $M^{-0.25}$ similar to the sSFR -- stellar mass relation. However, such a correlation may be driven/formed by selection effects. In this study, we investigate how H$α$ EWs correlate with galaxy properties and how selection biases could alter such correlations using a $z = 0.47$ narrowband-selected sample of 1572 H$α$ emitters from the Ly$α$ Galaxies in the Epoch of Reionization (LAGER) survey. The sample covers 3 deg$^2$ of COSMOS and $1.1\times10^5$ cMpc$^3$. We assume an intrinsic EW distribution to form mock samples of H$α$ emitters (HAEs) and propagate the selection criteria to match observations, giving us control on how selection biases can affect the underlying results. We find EW intrinsically correlates with stellar mass as $W_0 \propto M^{-0.16\pm0.03}$ and decreases by a factor of $\sim 3$ from $10^{7}$ to $10^{10}$ M$_\odot$. We find low-mass HAEs to be $\sim 320$ times more likely to have rest-frame EW$ > 200$Åcompared to high-mass HAEs. Combining the intrinsic EW -- stellar mass correlation with an observed SMF correctly reproduces the observed H$α$ LF, while not correcting for selection effects underestimates the number of bright HAEs. This suggests that the intrinsic EW -- stellar mass correlation is physically significant and reproduces three statistical distributions of galaxy populations (LF, SMF, EW distribution). At lower masses, we find there are more high-EW outliers compared to high masses, even after taking into account selection effects. Our results suggest that high sSFR outliers indicative of bursty SF activity are intrinsically more prevalent in low-mass HAEs and not a byproduct of selection effects.
description: 21 Pages, 13 Figures, 2 Tables, accepted to MNRAS