cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
New Abelian-like monopoles and the dual Meissner effect
Creators: name: Hiraguchi, Atsuki
name: Ishiguro, Katsuya
name: Suzuki, Tsuneo
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Violation of non-Abelian Bianchi identity can be regarded as $N^2-1$ Abelian-like monopole currents in the continuum SU(N) QCD. Three Abelian-like monopoles, when defined in SU(2) gluodynamics on the lattice à la DeGrand-Toussaint, are shown to have the continuum limit with respect to the color-invariant monopole density and the effective monopole action. Since each Abelian-like monopole is not gauge invariant, we have introduced various partial gauge fixing for the purpose of reducing lattice artifact monopoles in the thermalized vacuum. Here we investigate Abelian and monopole dominances and the Abelian dual Meissner effects adopting the same gauges like the maximal center gauge (MCG) in comparison with the maximal Abelian gauge (MAG). Abelian and monopole contributions to the string tension in these gauges are observed to be a little smaller than the non-Abelian string tension. However, we find that the monopole dominance is improved well when use is made of the block-spin transformations with respect to Abelian-like monopoles. We find each electric field is squeezed by the corresponding colored Abelian-like monopole in such gauges and the Abelian dual Meissner effect is observed independently for each color. Moreover, we confirm the dual Ampère's law in these new gauges as well as in MAG. The SU(2) vacuum is shown to be near the border between the type 1 and type 2 dual superconductors. The penetration length is almost equal for the four gauge fixings and the vacuum type in MCG is almost the same value as the previous results. These results are consistent with the previous results suggesting the continuum limit and the gauge-independence of Abelian monopoles.
title: Dagstuhl Reports, Table of Contents, Volume 4, Issue 11, 2014
Creators: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2015
Subjects: subject: Dagstuhl Reports
subject: Table of Contents
subject: Volume 4
subject: Issue 11
subject: 2014

description: Table of Contents, Frontmatter
description: Dagstuhl Reports, Volume 4, Issue 11, pages i-ii
Catalytic nanomaterials for amplified biosensing
Creators: name: Loynachan, Colleen N
Publisher: name: Imperial College London
Year: 2018

description: Accurate, timely, and sensitive diagnosis is the first step in appropriately treating disease. The development of diagnostics that can be used in non-hospital and point-of-care (PoC) settings is key for democratizing access to disease diagnosis and treatment when it is most effective. The application of PoC diagnostics in early disease detection is often limited due to insufficient sensitivity for the short time frames and limited resources available in these settings. To overcome these challenges, this thesis presents the synthesis, characterization, and application of catalytic nanomaterials for signal amplification and enhanced sensitivity in PoC diagnostic platforms. The nanomaterials developed here span a broad size regime from 1.5 nm clusters of atoms to 300 nm diameter particles and have been demonstrated for use in both in vitro and in vivo biosensing platforms. The platinum and gold nanomaterials exhibited robust and efficient peroxidase-like activity in their ability to oxidize chromogenic substrates in the presence of hydrogen peroxide to generate additional colored signals that could be used for amplification of disease detection, even after exposure to harsh conditions such as elevated temperatures. The larger catalytic nanomaterials were employed as extraordinarily stable and highly amplifying labels in a simple paper-based lateral flow assay (LFA). The nanocatalyst-labeled LFA surpassed the sensitivities of both commercial and published reports to date for paper-based detection of p24, one of the earliest and most conserved biomarkers of HIV. The smaller catalytic nanoclusters were efficiently renally cleared and were deployed in a modular nanosensor platform to monitor disease-associated protease activity in vivo. Catalytic activity of cleared gold nanoclusters in collected urine provided a simple, sensitive, and rapid colorimetric urinary readout of disease state. The clinical utility of both platforms presented here was investigated through detection of acute phase HIV in clinical human plasma samples using the nanocatalyst-labeled LFA, and successful non-invasive detection of tumors in a mouse model of colorectal cancer using the protease-nanosensors with colorimetric urinary readout. This thesis demonstrates the broad applicability and versatility of catalytic nanoparticle amplification for use in disease detection. A pipeline for further development of both sensing platforms for detection of other biomolecules at the PoC is presented.
Asymptotically nonflat Einstein-Born-Infeld-dilaton black holes with Liouville-type potential
Creators: name: Sheykhi, A.
name: Riazi, N.
name: Mahzoon, M. H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct some classes of electrically charged, static and spherically symmetric black hole solutions of the four-dimensional Einstein-Born-Infeld-dilaton gravity in the absence and presence of Liouville-type potential for the dilaton field and investigate their properties. These solutions are neither asymptotically flat nor (anti)-de Sitter. We show that in the presence of the Liouville-type potential, there exist two classes of solutions. We also compute temperature, entropy, charge and mass of the black hole solutions, and find that these quantities satisfy the first law of thermodynamics. We find that in order to fully satisfy all the field equations consistently, there must be a relation between the electric charge and other parameters of the system..
description: 15pages
Transformation fields in the Extended Space Model (ESM)- prediction and secondary test experiment
Creators: name: Yu, Tsipenyuk D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: Repeated series of experiments by checking of a prediction concerning capability of gravitational field generation at braking of charged massive particles in the substance are conducted. The prediction was made within the framework of the extended 5-D space model with the metric (1 + 4). The new scheme of experiment has allowed receiving results that qualitatively coincide with results of the first experimental series. Quantitatively in comparison with the first series in repeated experimental series results increased more than in 60 times. Additional force equal to 6,7*10-5 N was reached in experiments with stopping charged massive particles in the substance.
description: 9 pages, 4 fiqures, 21 reference, PDF only, submited to BAUMAN-PIRT2005 Conference "Physical Interpretation of Relativity Theory", Moscow,Russia,4-7 July, 2005
Filming a Makah village for Jim Jarmusch's Dead Man
Creators: name: Tubutis, Todd J.
Publisher: name: University of British Columbia
Year: 2009

description: This thesis looks at ethnographic film using Jim Jarmusch's 1996 Dead Man as a "site." Dead Man's penultimate scene portrays a Northwest Coast village using Makah actors and Makahmade set pieces. The production of this scene provides a setting where mainstream American culture, represented by a Hollywood film crew, comes into contact with Makah culture in a collaborative filmmaking effort, making Dead Man a site of cultural negotiation and mediation. By contextualizing Dead Man with earlier films from the Northwest Coast by Edward S. Curtis and Franz Boas, by examining the film's production through the words of the participants, and by incorporating theoretical notions of contact zones, authenticity, and experience, the author gleans an understanding of the contemporary Makah experience of Dead Man.
Transit Photometry of the Core-Dominated Planet HD 149026b
Creators: name: Charbonneau, David
name: Winn, Joshua N.
name: Latham, David W.
name: Bakos, Gaspar
name: Falco, Emilio E.
name: Holman, Matthew J.
name: Noyes, Robert W.
name: Csak, Balazs
name: Esquerdo, Gilbert A.
name: Everett, Mark E.
name: O'Donovan, Francis T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report g, V, and r photometric time series of HD 149026 spanning predicted times of transit of the Saturn-mass planetary companion, which was recently discovered by Sato and collaborators. We present a joint analysis of our observations and the previously reported photometry and radial velocities of the central star. We refine the estimate of the transit ephemeris to Tc [HJD] = 2453527.87455^{+0.00085}_{-0.00091} + N * 2.87598^{+0.00012}_{-0.00017}. Assuming that the star has a radius of 1.45 +/- 0.10 R_Sun and a mass of 1.30 +/- 0.10 M_Sun, we estimate the planet radius to be 0.726 +/- 0.064 R_Jup, which implies a mean density of 1.07^{+0.42}_{-0.30} g/cm^3. This density is significantly greater than that predicted for models which include the effects of stellar insolation and for which the planet has only a small core of solid material. Thus we confirm that this planet likely contains a large core, and that the ratio of core mass to total planet mass is more akin to that of Uranus and Neptune than that of either Jupiter or Saturn.
description: 18 pages, 4 figures, submitted to ApJ
Recursion formulae in logarithmic gromov-witten theory and quasimap theory
Creators: name: Nabijou, Navid
Publisher: name: Imperial College London
Year: 2019

description: The primary theme of this thesis is the study of recursion formulae in enumerative geometry. In Chapter 2 we define moduli spaces of relative stable quasimaps in genus zero, and derive a recursion formula which allows us to compute the resulting relative quasimap invariants. We apply this formula to obtain a quantum Lefschetz theorem for quasimap invariants (this is joint work with Luca Battistella). In Chapter 3 we present work in progress towards a recursion formula for log Gromov–Witten invariants. Along the way, we introduce auxiliary moduli spaces and use them to probe the geometry of the moduli space of log stable maps. Finally in Chapter 4, we express a fundamental object in ordinary Gromov–Witten theory – Givental’s Lagrangian cone – using relative stable maps. As a corollary, we obtain a sequence of universal relations involving the Gromov–Witten invariants.
Artifact - TLA+ Model Checking Made Symbolic
Creators: name: IGOR KONNOV
name: JURE KUKOVEC
name: THANH-HAI TRAN
Publisher: name: Zenodo
Year: 2019

description: After the rebuttal, we agreed with the reviewers to add new optimizations in our model checker, and new benchmarks in the second submission. This artifact version, named "25_v2", contains new benchmarks with intended bugs, and a new version of our model checker which can be downloaded from our Github repository https://github.com/konnov/apalache, the unstable branch. This artifact also comes in the form of a virtual machine (user: oopsla19, pass: ae). The VM contains the Apache license, the source code, the benchmarks, and our model checker, already installed. The updates in our model checker, the benchmarks, amd experimental results are already described in the second submission of our paper.
Artifact - TLA+ Model Checking Made Symbolic
Creators: name: IGOR KONNOV
name: JURE KUKOVEC
name: THANH-HAI TRAN
Publisher: name: Zenodo
Year: 2019

description: This artifact version, named "25_ae", contains the same materials which we submitted in the artifact evaluation, and two new files README, and LICENSE. Our artifact comes in the form of a virtual machine (user: oopsla19, pass: ae). Our model checker v0.5.0 is already installed on the VM. After the rebuttal, we agreed with the reviewers to add new optimizations in our model checker, and new benchmarks in the second submission. However, these changes are included only in the later version of our artifact, named "25_v2". Please check the version "25_v2" for updates in our second submission.
Detectability assessment of an x-ray imaging system using the nodes in a wavelet packet decomposition of a star-bar object
Creators: name: González-López, Antonio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Medical Physics (physics.med-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Purpose: Using linear transformation of the data allows studying detectability of an imaging system on a large number of signals. An appropriate transformation will produce a set of signals with different contrast and different frequency contents. In this work both strategies are explored to present a task-based test for the detectability of an x-ray imaging system. Methods: Images of a new star-bar phantom are acquired with different entrance air KERMA and with different beam qualities. Then, after a wavelet packet is applied to both input and output of the system, conventional statistical decision theory is applied to determine detectability on the different images or nodes resulting from the transformation. A non-prewhitening matching filter is applied to the data in the spatial domain, and ROC analysis is carried out in each of the nodes. Results: AUC maps resulting from the analysis present the area under the ROC curve over the whole 2D frequency space for the different doses and beam qualities. Also, AUC curves, obtained by radially averaging the AUC maps allows comparing detectability of the different techniques as a function of the frequency in one only figure. The results obtained show differences between images acquired with different doses for each of the beam qualities analyzed. Conclusions: Combining a star-bar as test object, a wavelet packet as linear transformation, and ROC analysis results in an appropriate task-based test for detectability performance of an imaging system. The test presented in this work allows quantification of system detectability as a function of the 2D frequency interval of the signal to detect. It also allows calculation of detectability differences between different acquisition techniques and beam qualities.
description: 18 pages, 10 figures
Effective Field Theories for Electrons in Crystalline Structures
Creators: name: Bottesi, Federico L.
name: Zemba, Guillermo R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Astrophysics (astro-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present an effective field theory formulation for a class of condensed matter systems with crystalline structures for which some of the discrete symmetries of the underlying crystal survive the long distance limit, up to mesoscopic scales, and argue that this class includes interesting materials, such as $Si$-doped $GaAs$. The surviving symmetries determine a limited set of possible effective interactions, that we analyze in detail for the case of $Si$-doped $GaAs$ materials. These coincide with the ones proposed in the literature to describe the spin relaxation times for the $Si$-doped $Ga As$ materials, obtained here as a consequence of the choice of effective fields and their symmetries. The resulting low-energy effective theory is described in terms of three (six chiral) one-dimensional Luttinger liquid systems and their corresponding intervalley transitions. We also discuss the Mott transition within the context of the effective theory.
description: 24 pages, 3 figures
Test di Configurabiltà e Prestazioni del Router Juniper
Creators: name: Brasolin, Franco
name: Veloce, Angelo
Publisher: name: INFN Open Access Repository
Year: 2003

description: Questo documento illustra le modalità e i risultati dei test dei nuovi router Juniper della famiglia M5. Il lavoro si inserisce nelle attivita' del Netgroup, afferente alla Commissione Nazionale di Calcolo e Reti dell'INFN. L'obiettivo è verificare la configurabilità e le performance di questi apparati in previsione della sostituzione degli attuali router di accesso alla rete GARR. This document shows procedures and tests of the new router Juniper of M5 family. This work is requested by the Netgroup belonging to the INFN National Commission of Network and Computing. The purpose is to verify how to set this Router and his performances. This is due to the future substitution of the INFN current Routers.
Hahn, Udo (Hrsg.), Der Glaube ist keine Privatsache
Creators: name: Schütz, J. Georg
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 43 Nr. 1 (1994): Ökumenische Rundschau, Band 43, Heft 1
Understanding and engineering the factors that control fatty acid biosynthesis in escherichia coli
Creators: name: Gallagher, Danielle
Publisher: name: Imperial College London
Year: 2018

description: This research identified and characterised several genetic and environmental factors that contribute to controlling the metabolic flux through fatty acid synthesis (FAS) in Escherichia coli, to enable high yield in production of fatty acids (FA) which can be further processed towards industrially relevant commodity products. Due to their essentiality to growth, high energy and carbon investment, E. coli have evolved several mechanisms that tightly coordinate FAS with phospholipid synthesis and the energy status of the cell. This makes the outcome of systematic engineering manipulations difficult to predict, but is an area of research that benefits greatly from computationally driven solutions that can be gained from modelling metabolism. In order to model metabolism effectively, parameters of the kinetic system must be obtained and enable subsequent associations with in vivo metabolism and physiology. To adequately make this association, mathematical formulas describing biochemical pathways must account for the control and regulation the system is subject to, so that metabolic engineers can design towards specific phenotypes and product yield. This work investigated FAS regulation under a range of perturbations and how the system responds in vivo to these changes, to gain insight into the control and regulations that are in place during fluctuating conditions. Furthermore, the experiments of this study found adaptive evolution to FA to be a promising strategy in complementing a directed engineering approach in E. coli, in order to adapt to the burden that presents itself during FA overproduction. As a directed approach towards FA overproduction, three novel bypass routes to malonyl-CoA production were also investigated, and found to improve in vivo rates of malonyl-CoA. However, improving this rate-limiting step alone was not sufficient for to overcome the native regulatory and energetic limitations that are present in FAS. The bypass routes were therefore combined with specific process optimisations identified during this research, which was found to improve yield compared to non-optimised cultivations.
Implementazione di un VPN Server  Utilizzando il Cisco VPN Concentrator 3005
Creators: name: Veraldi, Riccardo
name: Corso, Francesca Del
Publisher: name: INFN Open Access Repository
Year: 2004

description: Le VPN rappresentano una soluzione valida per il transito di traffico di tipo privato su rete pubblica, offrendo un servizio importante agli utenti che al di fuori delle sezioni INFN abbiano l'esigenza di potere accedere alle risorse e all'ambiente della LAN in modo trasparente, sicuro ed economico. Di seguito è presentato uno studio di implementazione del servizio VPN attraverso l'utilizzo del Cisco VPN Concentrator 3005. Sono delineate le procedure per la configurazione del servizio con soluzioni che vogliono privilegiare l'aspetto della sicurezza attraverso l'uso dei certificati digitali. Il seguente documento vuole essere una guida operativa per il LAN Manager che intende adottare questa soluzione.
The role of IL-33 in regulating skin immunity and skin carcinogenesis
Creators: name: Ward, Sophie
Publisher: name: Imperial College London
Year: 2019

description: Lymphoid stress-surveillance (LSS) refers to the capacity of tissue resident intraepithelial lymphocytes (IEL) to directly sense epithelial cell (EC) dysregulation and initiate a reparative response. Dendritic epidermal T cells (DETC) in the skin are potent producers of IL-13 upon epithelial dysregulation, which regulates EC function, promotes tissue homeostasis and protects against skin carcinogenesis. This may be due to its prominent effect on basal EC, where IEL-derived IL-13 enables a canonical EC stress-response with the expression of Il33 RNA. IL-33 is an abundant cytokine ‘alarmin’ which is constitutively expressed in the nucleus of basal skin EC but is rapidly released upon epithelial challenge. Here I show that LSS in the skin regulates the expression of IL-33 protein in EC during health as well as its release following epithelial damage. LSS does not regulate the fellow family member epithelial alarmin, IL-1, in EC. The IL-33 receptor, ST2, is predominantly expressed on skin resident and infiltrating regulatory T cells (TReg), with skin ST2+TReg localizing in close association with IL-33+ basal EC. I demonstrate that ST2-signalling in skin TReg promotes a more immunosuppressive and reparative phenotype in these cells. Absence of the IL-33/ST2 axis alters EC differentiation and phenotype, with EC aberrantly expressing stress-antigens, distinct keratins and pro-inflammatory cytokines, and the tissue displays reduced barrier integrity, as demonstrated by an increase in trans-epidermal water loss. Moreover, IL-33/ST2-signalling aids in restoring the skin barrier after epidermal abrasion by tape stripping, regulates immune infiltration during skin inflammation and protects against EC tumour outgrowth during cutaneous two-stage chemical carcinogenesis. Together my findings suggest, that IL-33, downstream of LSS, mediate direct EC-TReg cross-communication, and that this molecular axis further supports tissue homeostasis and protects against skin cancer development.
Duality and domain wall dynamics in a twisted Kitaev chain
Creators: name: Morris, C. M.
name: Desai, Nisheeta
name: Viirok, J.
name: Huvonen, D.
name: Nagel, U.
name: Room, T.
name: Krizan, J. W.
name: Cava, R. J.
name: McQueen, T. M.
name: Koohpayeh, S. M.
name: Kaul, Ribhu K.
name: Armitage, N. P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The Ising chain in transverse field is a paradigmatic model for a host of physical phenomena, including spontaneous symmetry breaking, topological defects, quantum criticality, and duality. Although the quasi-1D ferromagnet CoNb$_2$O$_6$ has been put forward as the best material example of the transverse field Ising model, it exhibits significant deviations from ideality. Through a combination of THz spectroscopy and theory, we show that CoNb$_2$O$_6$ in fact is well described by a different model with strong bond dependent interactions, which we dub the {\it twisted Kitaev chain}, as these interactions share a close resemblance to a one-dimensional version of the intensely studied honeycomb Kitaev model. In this model the ferromagnetic ground state of CoNb$_2$O$_6$ arises from the compromise between two distinct alternating axes rather than a single easy axis. Due to this frustration, even at zero applied field domain-wall excitations have quantum motion that is described by the celebrated Su-Schriefer-Heeger model of polyacetylene. This leads to rich behavior as a function of field. Despite the anomalous domain wall dynamics, close to a critical transverse field the twisted Kitaev chain enters a universal regime in the Ising universality class. This is reflected by the observation that the excitation gap in CoNb$_2$O$_6$ in the ferromagnetic regime closes at a rate precisely twice that of the paramagnet. This originates in the duality between domain walls and spin-flips and the topological conservation of domain wall parity. We measure this universal ratio `2' to high accuracy -- the first direct evidence for the Kramers-Wannier duality in nature.
description: 6 pages, 3 figures; 5 pages, 7 figures (Supplemental)
First--order continuous models of opinion formation
Creators: name: Aletti, Giacomo
name: Naldi, Giovanni
name: Toscani, Giuseppe
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study certain nonlinear continuous models of opinion formation derived from a kinetic description involving exchange of opinion between individual agents. These models imply that the only possible final opinions are the extremal ones, and are similar to models of pure drift in magnetization. Both analytical and numerical methods allow to recover the final distribution of opinion between the two extremal ones.
description: 17 pages, 4 figures
title: Dagstuhl Reports, Table of Contents, Volume 4, Issue 12, 2014
Creators: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2015
Subjects: subject: Dagstuhl Reports
subject: Table of Contents
subject: Volume 4
subject: Issue 12
subject: 2014

description: Table of Contents, Frontmatter
description: Dagstuhl Reports, Volume 4, Issue 12, pages i-ii
Study of the tau- --> 3h-2h+nu Decay
Creators: name: Aubert, B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The branching fraction of the tau- --> 3h- 2h+ nu decay (h= pi, kaon) is measured with the BaBar detector to be (8.56 +/- 0.05 +/- 0.42)E-04 where the first error is statistical and the second systematic. The observed structure of this decay is significantly different from the phase space prediction, with the rho resonance playing a strong role. The decay tau- --> f1 pi nu with the f1 meson decaying to four charged pions, is observed and the branching fraction is measured to be (3.9 +/- 0.7 +/- 0.5)E-04.
description: 3 figures. submitted to Phys. Rev. D
Group-velocity dispersion engineering of tantala integrated photonics
Creators: name: Black, Jennifer A.
name: Streater, Richelle
name: Lamee, Kieran F.
name: Carlson, David R.
name: Yu, Su-Peng
name: Papp, Scott B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Designing integrated photonics, especially to leverage Kerr-nonlinear optics, requires accurate and precise knowledge of refractive index across the visible to infrared spectral ranges. Tantala (Ta_2O_5) is an emerging material platform for integrated photonics and nanophotonics that offers broadband ultralow loss, moderately high nonlinearity, and advantages for scalable and heterogeneous integration. We present refractive-index measurements on a thin film of tantala, and we explore the efficacy of this data for group-velocity dispersion (GVD) engineering with waveguide and ring-resonator devices. In particular, the observed spectral extent of supercontinuum generation in fabricated waveguides, and the wavelength dependence of free spectral range (FSR) in optical resonators provide a sensitive test of our integrated-photonics design process. Our work opens up new design possibilities with tantala, including with octave-spanning soliton microcombs.
Structural performance of steel buildings under travelling fires and blast
Creators: name: Teslim-Balogun, Adeyanju Ashabi
Publisher: name: Imperial College London
Year: 2019

description: Previous records of fire and blast incidents have shown the extensive damage that these actions can cause in building structures in general and steel buildings in particular. Therefore, it is crucial that strategic facilities are designed to withstand these extreme loads with as little damage as possible. However, the design of structures to resist blast and fire actions has typically been carried out prescriptively and without consideration for the uneven distribution of temperatures in large building compartments typical of today’s architectural practice. Blast pressures due to explosions are also likely to be followed by travelling fires in these compartments. Moreover, due to the significant level of uncertainty involved, a performance-based framework is likely to be more suited for the design and assessment of structures subjected to these loads. This thesis aims to investigate the structural performance of steel structures under travelling fires as well as multi-hazard conditions involving blast and travelling fires from a performance-based perspective. Non-linear finite element analyses are carried out on steel frames considering various travelling fires and post-blast travelling fire scenarios. The PEER performance-based framework, originally developed for seismic actions, is tailored and used to assess the building performance under these actions. The results show that the structural response could be underestimated or overestimated by up to 30 % when there is significant correlation between the maximum compartment temperature and the length of travelling fire for very low probabilities of exceedance. Under post-blast travelling fires, the first storey is likely to be the most critical storey, and blast and fire parameters can significantly affect the structural response. Moreover, correlation effects between maximum compartment temperature and blast overpressure are found to be more significant when low exceedance rates are considered. The results of this research demonstrate that a performance-based assessment can be used to examine the response of steel structures under these extreme loads and to assess the efficiency of different structural systems. It can also potentially lead to great savings in the cost of blast and fire protection required.
Effects of functional communication training for reducing challenging behaviours of nonverbal individuals with developmental disabilities
Creators: name: Tong, Jennifer
Publisher: name: University of British Columbia
Year: 2009

description: Although previous narrative reviews have found functional communication training to be an effective intervention to reduce aberrant behaviour, until now, there has not been sufficient data to statistically analyze the various parameters. The current meta-analysis used a regression approach (Center, Skiba & Casey, 1985-1986) to objectively and systematically compare findings across single-case studies in an empirical fashion to examine the growing body of literature demonstrating the effectiveness of functional communication training for nonverbal individuals with developmental disabilities who engage in aberrant behaviour. Fifteen primary research studies generated a total of 76 baseline/treatment comparisons which resulted in 228 effect sizes. The effect sizes were used as the dependent variable in the analysis. The 7 parameters under investigation were: 1) diagnosis/type of disability, 2) form of behaviour, 3) function of behaviour, 4) alternative communicative response, 5) setting, 6) maintenance, and 7) generalization. Analysis on subject sex, primary disability and preintervention mode of communication were also examined. The findings indicated that functional communication had a significant impact on reducing challenging behaviours of nonverbal individuals with various developmental disabilities and was equally effective across all parameters except for the function of behaviour, alternative communicative response, and pre-intervention mode of communication. Additional analyses were conducted on the assessment method, treatment design and treatment package. Results indicated that effectiveness varied depending upon the form of assessment that was used prior to intervention. The analyses also indicated a significant 2-way interaction between the assessment method prior to intervention and the treatment package. Methodological characteristics and their implications for both research and practice as well as areas for future research are discussed.
The mixing time of the giant component of a random graph
Creators: name: Benjamini, Itai
name: Kozma, Gady
name: Wormald, Nicholas
Publisher: name: arXiv
Year: 2006
Subjects: subject: Probability (math.PR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C80, 60J10

description: We show that the total variation mixing time of the simple random walk on the giant component of supercritical Erdos-Renyi graphs is log^2 n. This statement was only recently proved, independently, by Fountoulakis and Reed. Our proof follows from a structure result for these graphs which is interesting in its own right. We show that these graphs are "decorated expanders" - an expander glued to graphs whose size has constant expectation and exponential tail, and such that each vertex in the expander is glued to no more than a constant number of decorations.
description: 21 pages. New version fixes a small mistake in the proof of Theorem 2.3 discovered by Johannes Blank
Time-dependent inertia of self-propelled particles: the Langevin rocket
Creators: name: Sprenger, Alexander R.
name: Jahanshahi, Soudeh
name: Ivlev, Alexei V.
name: Löwen, Hartmut
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Many self-propelled objects are large enough to exhibit inertial effects but still suffer from environmental fluctuations. The corresponding basic equations of motion are governed by active Langevin dynamics which involve inertia, friction and stochastic noise for both the translational and orientational degrees of freedom coupled via the self-propulsion along the particle orientation. In this paper, we generalize the active Langevin model to time-dependent parameters and explicitly discuss the effect of time-dependent inertia for achiral and chiral particles. Realizations of this situation are manifold ranging from minirockets which are self-propelled by burning their own mass, dust particles in plasma which lose mass by evaporating material to walkers with expiring activity. Here we present analytical solutions for several dynamical correlation functions such as the mean-square displacement and the orientational and velocity autocorrelation functions. If the parameters exhibit a slow power-law in time, we obtain anomalous superdiffusion with a non-trivial dynamical exponent. Finally we constitute the "Langevin rocket" model by including orientational fluctuations in the traditional Tsiolkovsky rocket equation. We calculate the mean reach of the Langevin rocket and discuss different mass ejection strategies to maximize it. Our results can be tested in experiments on macroscopic robotic or living particles or in self-propelled mesoscopic objects moving in media of low viscosity such as complex plasma.
description: 17 pages, 9 figures
title: Dagstuhl Reports, Table of Contents, Volume 5, Issue 1, 2015
Creators: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2015
Subjects: subject: Dagstuhl Reports
subject: Table of Contents
subject: Volume 5
subject: Issue 1
subject: 2015

description: Table of Contents, Frontmatter
description: Dagstuhl Reports, Volume 5, Issue 1, pages i-ii
Mechanosensitivity of the failing myocardium: Role of mechanical unloading
Creators: name: Bello, Sean
Publisher: name: Imperial College London
Year: 2019

description: Left ventricular assist devices (LVADs) were initially developed primarily to serve as a means of bridging heart failure patients to transplantation. However, reports show that significant myocardial functional recovery occurs in some LVAD patients to the extent that device explantation can be achieved without the need for transplantation. This phenomenon, described as reverse remodelling only occurs in about 4-10% of patients treated with LVADs and the basis for this is unknown. Myocardial fibrosis worsens with mechanical unloading but the mechanism remains poorly understood. Unloading is however associated with a reduction in microvascular luminal diameter suggesting a negative autoregulatory effect of unloading on the coronary collateral circulation. Coronary reperfusion after myocardial injury is associated with heightened regenerative responses in the zebrafish heart. However, the effect coronary reperfusion coupled with unloading has on cardiomyocyte proliferation is unknown. It is known that cardiomyocyte excitation-contraction coupling is improved by unloading but the effect of unloading on whole-heart contractility and on proteins that facilitate efficient excitation-contraction coupling such as; JPH2, BIN1, and Tcap, is unknown. In this thesis, we hypothesised that mechanical unloading of the reperfused ischaemic heart ameliorates unloading-induced increases in fibrosis and stimulates an upregulation of cardiomyocyte proliferation. We also hypothesised that these positive effects of mechanical unloading are associated with improvements in the expression and function of JPH2, BIN1, and Tcap, and in whole-heart contractility. Hearts of animal models of ischaemic cardiomyopathy, achieved following coronary artery ligation, were mechanically unloaded via heterotopic abdominal heart and lung transplantation after either being revascularised or left permanently ligated. We found that following acute myocardial infarction, ischaemia-reperfusion coupled with mechanical unloading was associated with a remarkable amelioration of the deleterious effect of unloading on myocardial fibrosis and a significant upregulation of cardiomyocyte proliferation. Two major findings that could have significant clinical implications for LVAD-induced myocardial recovery.
Stiffness of the Edwards-Anderson Model in all Dimensions
Creators: name: Boettcher, Stefan
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: A comprehensive description in all dimensions is provided for the scaling exponent $y$ of low-energy excitations in the Ising spin glass introduced by Edwards and Anderson. A combination of extensive numerical as well as theoretical results suggest that its lower critical dimension is {\it exactly} $d_l=5/2$. Such a result would be an essential feature of any complete model of low-temperature spin glass order and imposes a constraint that may help to distinguish between theories.
description: 4 RevTex pages, 2 eps Figures included; related information available at http://www.physics.emory.edu/faculty/boettcher/publications.html#EO, as to appear in PRL
Analysis of the displacement of terrestrial mobile robots in corridors using paraconsistent annotated evidential logic eτ
Creators: name: Bernardini, Flavio Amadeu
name: da Silva, Marcia Terra
name: Abe, Jair Minoro
name: de Lima, Luiz Antonio
name: Miatluk, Kanstantsin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This article proposes an algorithm for a servo motor that controls the movement of an autonomous terrestrial mobile robot using Paraconsistent Logic. The design process of mechatronic systems guided the robot construction phases. The project intends to monitor the robot through its sensors that send positioning signals to the microcontroller. The signals are adjusted by an embedded technology interface maintained in the concepts of Paraconsistent Annotated Logic acting directly on the servo steering motor. The electric signals sent to the servo motor were analyzed, and it indicates that the algorithm paraconsistent can contribute to the increase of precision of movements of servo motors.
Improved Guarantees for k-means++ and k-means++ Parallel
Creators: name: Makarychev, Konstantin
name: Reddy, Aravind
name: Shan, Liren
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: In this paper, we study k-means++ and k-means++ parallel, the two most popular algorithms for the classic k-means clustering problem. We provide novel analyses and show improved approximation and bi-criteria approximation guarantees for k-means++ and k-means++ parallel. Our results give a better theoretical justification for why these algorithms perform extremely well in practice. We also propose a new variant of k-means++ parallel algorithm (Exponential Race k-means++) that has the same approximation guarantees as k-means++.
Hot stamping of titanium alloys
Creators: name: Kopec, Mateusz
Publisher: name: Imperial College London
Year: 2020

description: Demand for low density and high strength materials in the aviation sector has expanded greatly due to ambitious carbon emission and fuel consumption targets. In order to meet these targets, manufacturers have focused on weight reduction via the use of lightweight materials. In the aerospace sector, high strength structural components are made from titanium alloys. However, the forming of complex-shaped components from titanium alloys is time, energy and cost intensive. One promising solution to overcome these difficulties proposed in the literature is using the hot stamping process to form complex-shaped components from sheet metal with cold dies, and rapidly quenching the workpiece in the dies simultaneously. The hot stamping process promises to reduce the tool wear commonly found in conventional hot forming processes and be an overall more efficient and economical process when compared to conventionally used isothermal hot forming techniques. A novel hot stamping process for titanium alloys using cold forming tools and a hot blank was studied systematically in this thesis. This work aims to investigate the microstructural evolution and flow behavior of a titanium alloy (Ti6Al4V) under hot stamping conditions experimentally, and to model these parameters using the constitutive equations proposed. The material behavior was modelled using mechanism-based viscoplastic constitutive equations to replicate the material response of a two-phase titanium alloy Ti6Al4V under hot stamping conditions. Finally, the developed model's accuracy was validated by comparing to experimental uniaxial tensile tests and microstructural maps of the deformed alloy. Microstructural analysis revealed that the heating and soaking conditions are vital to the microstructure and post-form strength, whereas the plastic deformation during the hot stamping only has a negligible effect on both recrystallization and phase transformation due to the very short deformation time. The developed material model was implemented into the Finite Element (FE) simulation to study the deformation characteristics during the hot stamping process. The verified simulation data were analysed through a novel hot stamping technique with good agreements achieved between the predicted and experimental results. A complex shaped wing stiffener panel component was successfully formed from TC4 titanium alloy, demonstrating the great potential of investigated technology in forming complex shaped titanium alloys components. Finally, Fast light Alloys Stamping Technology (FAST) is proposed for titanium alloys, where fast heating to a twophase titanium alloy sheet with equiaxed microstructure is employed.
Gauge invariant MSSM inflaton
Creators: name: Allahverdi, Rouzbeh
name: Garcia-Bellido, Juan
name: Enqvist, Kari
name: Mazumdar, Anupam
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We argue that all the necessary ingredients for successful inflation are present in the flat directions of the Minimally Supersymmetric Standard Model. We show that out of many gauge invariant combinations of squarks, sleptons and Higgses, there are two directions, ${\bf LLe}$, and ${\bf udd}$, which are promising candidates for the inflaton. The model predicts more than $10^3$ e-foldings with an inflationary scale of $H_{\rm inf}\sim {\cal O}(1-10)$ GeV, provides a tilted spectrum with an amplitude of $δ_H\sim 10^{-5}$ and a negligible tensor perturbation. The temperature of the thermalized plasma could be as low as $T_{rh}\sim {\cal O}(1-10)$~TeV. Parts of the inflaton potential can be determined independently of cosmology by future particle physics experiments.
description: 4 revtex pages, some references added, stabilization of moduli and supergravity effects are discussed
MPEC 2024-T214 : 2024 TB7
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 TB7

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Jet momentum broadening in the pre-equilibrium Glasma
Creators: name: Ipp, Andreas
name: Müller, David I.
name: Schuh, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Jets are important probes of heavy ion collisions as they can provide information on the interaction of a highly energetic parton with the medium it traverses. In the hydrodynamic stage of dense, strongly interacting matter, these interactions can be explained in terms of scattering processes, soft gluon emission and collinear parton splittings. However, jets originate even before the hydrodynamic stage. Here we report on the first numerical simulation of transverse momentum broadening of jets stemming from the interaction of partons with boost-invariantly expanding Glasma flux tubes. The Glasma stage is a pre-hydrodynamic stage based on the Color Glass Condensate framework. Our calculation shows strong time-dependence and an intrinsic anisotropy of momentum broadening in the directions transverse to the jet propagation direction.
description: 6 pages, 4 figures, published in PLB