cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A collective coordinate framework to study the dynamics of travelling waves in stochastic partial differential equations
Creators: name: Cartwright, Madeleine C.
name: Gottwald, Georg A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We propose a formal framework based on collective coordinates to reduce infinite-dimensional stochastic partial differential equations (SPDEs) with symmetry to a set of finite-dimensional stochastic differential equations which describe the shape of the solution and the dynamics along the symmetry group. We study SPDEs arising in population dynamics with multiplicative noise and additive symmetry breaking noise. The collective coordinate approach provides a remarkably good quantitative description of the shape of the travelling front as well as its diffusive behaviour, which would otherwise only be available through costly computational experiments. We corroborate our analytical results with numerical simulations of the full SPDE.
description: includes now pathwise matching
Additional file 1: of Autozygosity islands and ROH patterns in Nellore lineages: evidence of selection for functionally important traits
Creators: name: Peripolli, Elisa
name: Metzger, Julia
name: Lemos, Marcos De
name: Nedenia Stafuzza
name: Kluska, Sabrina
name: Olivieri, Bianca
name: Fabieli Feitosa
name: Berton, Mariana
name: Lopes, Fernando
name: Danísio Munari
name: Raysildo Lôbo
name: Magnabosco, Cláudio De Ulhoa
name: Croce, Fernando Di
name: Osterstock, Jason
name: Denise, Sue
name: Pereira, Angélica
name: Baldi, Fernando
Publisher: name: figshare
Year: 2018
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Marine Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Autozygosity islands across the Nellore cattle genome. (DOCX 20 kb)
Length effects in elastic imperfect cylindrical shells under uniform bending
Creators: name: Fajuyitan, Oluwole Kunle
Publisher: name: Imperial College London
Year: 2018

description: Recent computational investigations into the buckling behaviour of perfect elastic thin-walled cylindrical shells under uniform bending, a ubiquitous reference structural system that enjoys wide practical applications, have demonstrated that the stability behaviour of this shell system depends largely on the length. Consequently, four distinct length domains – short, medium, transitional and long – were introduced to categorise the response of the system based on the relative influence of end boundary restraint and cross-sectional ovalisation. However, most investigations on this particular shell system have only focussed on near-perfect geometric cases despite the vast research efforts that were made on the subject of imperfection sensitivity in a related reference system of cylindrical shells under uniform axial compression. Furthermore, the potential coupling between length and imperfection sensitivity has never been studied for any shell system. This research thus seeks to understand and characterise the effect of length on the elastic stability of imperfect cylindrical shells under uniform bending, considering diverse forms of geometric imperfections. The stability investigations were performed over a wide parametric variation of length, radius-to-thickness ratio, end boundary condition, form and amplitude of geometric imperfection, using a combination of modern finite element analysis software and programming languages. It was confirmed that there exists a relationship between the length of the shell system and imperfection sensitivity and this relationship was characterised into realistic, but conservative closed-form, algebraic expressions as a proxy to undertaking further computational investigations by analysts. The study also offers an efficient computational strategy that may be adopted in managing large computational analyses through most modern finite element suites and it is envisaged that this strategy will appeal to computational analysts who are encouraged to adopt the automation methodology described herein to explore other structural systems.
Towards efficient big data processing in data centres
Creators: name: Mai, Luo
Publisher: name: Imperial College London
Year: 2017

description: Large data processing systems require a high degree of coordination, and exhibit network bottlenecks due to massive communication data. This motivates my PhD study to propose system control mechanisms that improve monitoring and coordination, and efficient communication methods by bridging applications and networks. The first result is Chi, a new control plane for stateful streaming systems. Chi has a control loop that embeds control messages in data channels to seamlessly monitor and coordinate a streaming pipeline. This design helps monitor system and application-specific metrics in a scalable manner, and perform complex modification with on-the-fly data. The behaviours of control messages are customisable, thus enabling various control algorithms. Chi has been deployed into production systems, and exhibits high performance and scalability in test-bed experiments. With effective coordination, data-intensive systems need to remove network bottlenecks. This is important in data centres as their networks are usually over-subscribed. Hence, my study explores an idea that bridges applications and networks for accelerating communication. This idea can be realised (i) in the network core through a middlebox platform called NetAgg that can efficiently execute application-specific aggregation functions along busy network paths, and (ii) at network edges through a server network stack that provides powerful communication primitives and traffic management services. Test-bed experiments show that these methods can improve the communication of important analytics systems. A tight integration of applications and networks, however, requires an intuitive network programming model. My study thus proposes a network programming framework named Flick. Flick has a high-level programming language for application-specific network services. The services are compiled to dataflows and executed by a high-performance runtime. To be production-friendly, this runtime can run in commodity network elements and guarantee fair resource sharing among services. Flick has been used for developing popular network services, and its performance is shown in real-world benchmarks.
Additional file 6: of Heterogeneous combinatorial expression of Hoxd genes in single cells during limb development
Creators: name: P. Fabre
name: M. Leleu
name: B. Mascrez
name: Q. Lo Giudice
name: J. Cobb
name: D. Duboule
Publisher: name: figshare
Year: 2018
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology

description: Figure S5. Cyclone analysis of the cell cycle in single cells from autopod and zeugopod. A-B. Graphic representation showing the autopod (A) and zeugopod (B) cells based on their combinatorial expression of Hoxd genes associated with their predicted cell cycle phase as color coded with the above circles in blue (G1), yellow (G2) and green (S phase). C shows the G1 cyclone scores for each of the six main combinations in autopod cells (Right) and zeugopod cells (Left). Error bars represents standard deviation. D. Barplots showing the proportions of G1 and G2 putative state for the cells in all possible combination of posterior Hoxd genes (Hoxd 9 to Hoxd13) observed. (PDF 201 kb)
Bright-Dark Exciton Interplay Evidenced by Spin Polarization in CdSe/CdMnS Nanoplatelets
Creators: name: Shornikova, Elena V.
name: Yakovlev, Dmitri R.
name: Tolmachev, Danil O.
name: Prosnikov, Mikhail A.
name: Christianen, Peter C. M.
name: Shendre, Sushant
name: Isik, Furkan
name: Delikanli, Savas
name: Demir, Hilmi Volkan
name: Bayer, Manfred
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Diluted magnetic semiconductor (DMS) colloidal nanocrystals demonstrate remarkable magneto-optical properties. However, the behavior of circular polarization of their emission in high magnetic fields remains unclear. We measure magneto-optical properties of colloidal CdSe/CdMnS nanoplatelets in high magnetic fields up to 30 T and at cryogenic temperatures. The degree of circular polarization of photoluminescence demonstrates non-monotonous behavior in a magnetic field. In low magnetic fields, the polarization degree is positive, due to an exchange interaction of excitons with localized spins of magnetic Mn ions. The exchange interaction is strong enough to overcome the intrinsic Zeeman splitting, which provides negatively polarized emission in nonmagnetic CdSe/CdS nanoplatelets. After reaching a maximum the polarization degree starts to decrease and reverses the sign to negative in high magnetic fields. The critical magnetic field, in which the sign is reversed, increases when temperature is elevated. We develop a model, which explains this behavior by an interplay of bright and dark exciton recombination.
A chemical biology approach to understanding the basis of voltage-gated sodium channel modulation
Creators: name: Tzakoniati, Foteini
Publisher: name: Imperial College London
Year: 2018

description: The voltage-gated sodium channel, Nav1.7, is involved in the propagation of pain signals from the peripheral nervous system. Genomic data from individuals with non-functional Nav1.7 expression strongly suggest it has potential to be the target of novel analgesics; loss of Nav1.7 function completely abolishes pain sensations in otherwise healthy phenotypes. The focus of this thesis is the development of chemical tools to elucidate mechanisms of Nav1.7 modulation in the cell. The design, synthesis, characterisation and potency data of photocrosslinking probes that target two distinct Nav1.7 domains is reported. Domain II is targeted by photoprobes derived from the spider venom inhibitory cystine knot peptide Huwentoxin-IV. Moreover, a photoprobe based on the novel family of Nav1.7-selective aryl sulfonamide inhibitors targets domain IV of Nav1.7. Determining the binding sites that lead to modulation of gating was firstly attempted in bacterial/hNav1.7 chimeric proteins that have been purified and used for crystallographic and biophysical studies. According to gel shift assays, certain photoprobes exhibited efficient photocrosslinking capabilities and were taken forward to proteomic mass spectrometry analysis in pursuit of photocrosslinking sites. Additionally, a series of approaches were explored in order to optimise the identification of Nav1.7 by proteomic mass spectrometry in an engineered cell line. Finally, the maturation of induced pluripotent stem cells from patients that carry a Nav1.7 mutation was followed by quantitative proteomics as an initial approach to understand Nav1.7-related mechanisms in a disease model.
Muon catalyzed fusion - an investigation of reactor design
Creators: name: Kelly, Richard
Publisher: name: Imperial College London
Year: 2018

description: In this dissertation, we calculate the power capacity and tritium replacement ratios for muon catalyzed fusion vessels containing mixtures of deuterium and tritium (dt). This calculation is done for various wall thicknesses, types of metal and dt densities. This allows us to ascertain which of these configurations (wall thickness, metal and dt density) has the most promise. In order to calculate these quantities, we start with an assumed wall thickness and metal type and determine the muon energy necessary to penetrate the wall and emerge in the dt mixture. From the energy of the emerging muon we determine the vessel size for the different dt densities. For each vessel configuration we find a) the relationship between the steady state dt temperature, the vessel wall temperature and the muon flux; b) the maximum pressure the vessel can contain and c) the number of tritons bred per fusion neutron. Using the equation of state for the dt, we relate this maximum pressure to a maximum dt temperature from which we infer a maximum muon flux. Assuming 150 fusion reactions catalyzed per muon, we can then extract the power generated for each configuration and assess the ratio of the rates of tritium creation to tritium decay.
title: ADCO, Septième cartulaire de Saint-Étienne de Dijon (1661-1665), Cart. 29 (G 134), 996 folios, f. 0275
Creators: name: de la Côte d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire

description: Septième cartulaire de Saint-Étienne de Dijon (1661-1665), Archives départementales de la Côte-d'Or, Cart. 29 (G 134), 996 folios, f. 0275, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Septième cartulaire de Saint-Étienne de Dijon (1661-1665), Archives départementales de la Côte-d'Or, Cart. 29 (G 134), 996 folios, f. 0275, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Effects of Superradiance in Active Galactic Nuclei
Creators: name: Sarmah, Priyanka
name: Verma, Himanshu
name: Cheung, Kingman
name: Silk, Joseph
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A supermassive black hole (SMBH) at the core of an active galactic nucleus (AGN) provides room for the elusive ultra-light scalar particles (ULSP) to be produced through a phenomenon called \textit{superradiance}. This phenomenon produces a cloud of scalar particles around the black hole by draining its spin angular momentum. In this work, we present a study of the superradiant instability due to a scalar field in the vicinity of the central SMBH in an AGN. We begin by showing that the time-evolution of the gravitational coupling $α$ in a realistic ambiance created by the accretion disk around the SMBH in AGN leads to interesting consequences such as the amplified growth of the scalar cloud, enhancement of the gravitational wave emission rate, and appearance of higher modes of superradiance within the age of the Universe. We then explore the consequence of superradiance on the characteristics of the AGN. Using the Novikov-Thorne model for an accretion disk, we divide the full spectrum into three wavelength bands- X-ray ($10^{-4}-10^{-2}~μ$m), UV (0.010-0.4~$μ$m), and Vis-IR (0.4-100~$μ$m) and observe sudden drops in the time-variations of the luminosities across these bands and Eddington ratio ($f_{\textrm{Edd}}$) with a characteristic timescale of superradiance. Using a uniform distribution of spin and mass of the SMBHs in AGNs, we demonstrate the appearance of depleted regions and accumulations along the boundaries of these regions in the planes of different band-luminosities and $f_{\textrm{Edd}}$. Finally, we discuss some possible signatures of superradiance that can be drawn from the observed time-variation of the AGN luminosities.
description: 20 pages, 10 figures, 1 table; MNRAS accepted version: Discussion of self-interaction is included
Magnetic moments of the spin-${3\over 2}$ singly heavy baryons
Creators: name: Meng, Lu
name: Wang, Guang-Juan
name: Leng, Chang-Zhi
name: Liu, Zhan-Wei
name: Zhu, Shi-Lin
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We calculate the magnetic moments of spin-$3\over 2$ singly charmed baryons in the heavy baryon chiral perturbation theory (HBChPT). The analytical expressions are given up to $\mathcal{O}(p^3)$. The heavy quark symmetry is used to reduce the number of low energy constants (LECs). With the lattice QCD simulation data as the magnetic moments of the charmed baryons, the numerical results are given up to $\mathcal{O}(p^3)$ in three scenarios. In the first scenario, we use the results in the quark model as the leading order input. In the second scenario, we use the heavy quark symmetry and neglect the contribution of heavy quark. In the third scenario, the heavy quark contribution is considered on the basis of the scenario II and the magnetic moments of singly bottom baryons are given as a by-product.
description: 18 pages, 2 figures
Brain Derived Neurotrophic Factor (BDNF) As a Predictive Biomarker of the Occurrence of Post Traumatic Stress Disorder (PTSD)
Creators: name: H. Belhadj-Tahar
name: N. Sadeg
Publisher: name: Zenodo
Year: 2021
Subjects: Post traumatic stress
PTSD
brain-derived neurotrophic factor
BDNF
biomarker

description: The primary goal of the pilot study was to determine the rate of serum BDNF and the initial clinical course of a subject who had been exposed to a potentially traumatic incident over the course of three months. In this study 12 volunteers were recruited, 7 have been exposed to a traumatic event and 5 negative controls without psycho-trauma history. In this study, there is no correlation between circulating levels of cortisol and BDNF. The following are the findings of this study: In comparison to the control group, the rate of BDNF was substantially lower in the trauma group of volunteers: 6.20±1.73 ng / ml for the group with trauma versus 21.79±1.76 ng / ml for the control group with p<0.001. When compared to those who have experienced a traumatic event, the rate of serum BDNF is substantially reduced in victims of physical aggression: 4.36±0.37 ng / ml Assault group versus 6.94±1.44 ng / ml control group event with p = 0.03. The level of BDNF is significantly inversely correlated with the intensity of the Peritraumatic distress (r = -0.75, p <0.05). When compared to the group without PTSD, the rate of serum BDNF was significantly lower in the group with acute PTSD: 7.5±0.9 ng / ml in the absence of PTSD (n = 4) versus 4.5 ±0.4 in the presence of PTSD (n = 3), p = 0.001.
Binary evolution with relativistic jets
Creators: name: Kolb, Ulrich
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Relativistic jets can extract mass-energy from a black hole. In semi-detached black hole binaries the jet ejection process constitutes a `consequential angular momentum loss' (CAML) process. The effect of this jet-induced CAML is to lower the transfer rate below the value set by systemic driving and to stabilize otherwise unstable systems. Implications of jet-induced CAML for GRO J1655-40 are discussed.
description: 4 pages, 2 figures; to appear in 2nd Workshop of Relativistic Jets from Galactic Sources, R.N.Ogley and S.J.Bell Burnell (eds.), NewAR 42, in press
The metabolic phenotype of the infant of the mother with gestational diabetes
Creators: name: Logan, Karen Mary
Publisher: name: Imperial College London
Year: 2016

description: Offspring of mothers with diabetes are at greater risk of adverse metabolic outcomes in later life. Altered adiposity in infancy is a plausible mediator. I aimed to compare the metabolic phenotype of infants of mothers with (IDM) and without gestational diabetes mellitus (NIDM). I performed a meta-analysis of studies examining adiposity in offspring of mothers with and without diabetes (all types). In a prospective cohort study, I used magnetic resonance imaging and spectroscopy to compare the quantity and distribution of adipose tissue (AT) and intrahepatocellular lipid (IHCL), in IDM and NIDM in early infancy. I also used nuclear magnetic resonance (NMR) spectroscopy to explore urinary metabolic profiles. Meta-analysis: Over 24,000 infants and 17,000 children were included in the body composition meta-analyses. Maternal diabetes was associated with greater fat mass in offspring (mean difference [95% CI]): 83g [49, 117], p<0.00001 in infants, and 1.69kg [0.96, 2.43], p<0.00001 in children. Prospective cohort study: Mothers with gestational diabetes had good pregnancy glycaemic control. There was no difference in AT volume between newborn IDM and NIDM. At a median age of 10 weeks, and following adjustment for body size, total AT was 16% greater in IDM (mean % difference [95% CI]); 16.0 [6.7, 24.1], p=0.002. This difference remained significant following adjustment for maternal pre-pregnancy BMI. There were no differences in AT distribution or IHCL between groups. Urinary metabolic profiles differed in newborn IDM, including alterations in the tricarboxylic acid cycle. No differences were apparent at <2 weeks or 10 weeks of life, although there was some evidence of a relationship between newborn urinary metabolic profile and adiposity at 8-12 weeks of life. Adiposity in IDM is amplified in early infancy, despite good maternal glycaemic control. Reduction in postnatal adiposity may be a therapeutic target to reduce later health risks.
The parent bodies of fine-grained micrometeorites: A petrologic & spectroscopic perspective
Creators: name: Suttle, Martin David
Publisher: name: Imperial College London
Year: 2018

description: Micrometeorites are millimetre-scale cosmic dust grains, derived from asteroids and comets. They represent the largest flux of extraterrestrial material currently falling to Earth, with an estimated contribution of 20,000-60,000 tons per year. In this thesis, the geological history, parent body properties and atmospheric entry of fine-grained micrometeorites are investigated through micro-analysis and spectroscopic techniques. The degree of aqueous alteration within fine-grained micrometeorites was investigated using criteria initially developed for CM chondrites (Chapt.3). This revealed that most particles are intensely altered, with petrologic subtypes
Anas clypeata Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Anseriformes
Anatidae
Anas
Anas clypeata

description: Anas clypeata [spec. nov.]
A. rostri extremo dilatato rotundato, ungue incurvo. Fn. svec. 102. It. gotl. 167.
Anas latirostra major. Gesn. av. 120. Aldr. orn. 3. p. 227.
Anas platyrhynchos altera. Will. orn. 283. t. 74. Raj. av. 143.
Anas clypeata germanica. Alb. av. l. p. 93. t. 97. 98.
Habitat in Europae maritimis.
description: Published as part of Linnaeus, Carolus, 1758, Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Stockholm :Laurentius Salvius on pages 124-125, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Interactive modelling of the evolutionary tribological phenomena in cold stamping
Creators: name: Hu, Yiran
Publisher: name: Imperial College London
Year: 2018

description: Tribological contacts are responsible for approximately 23% of world's total energy consumption with the majority of energy consumption involved in manufacturing operations. Manufacturing is one of the main energy consuming sectors and the optimizing of its friction and wear performance can significantly increase the lifetime and reduce the maintenance work of equipment. In cold stamping, friction and wear that are generated between the tool and work-piece are important tribological responses infuencing the material ow, surface quality and tool-life. It has been found that these responses are not material properties but highly nonlinear phenomena, which vary spatially and historically with operation parameters, such as contact pressure, sliding speed and sliding distance of forming processes. It has been widely observed that galling and lubricant breakdown phenomena that occur during cold stamping cause evolutionary surface morphology changes and thus involve the simultaneous interaction between friction and wear: the galling generated on a tool surface during forming can cause coefficient of friction (COF) to increase and wear rate to decrease; the lubricant lm breakdown with time during single path sliding leads to a rapid increase in the COF and wear at the contact. In this thesis, interactive friction models were developed to predict the evolution of COF with the effect of galling and lubricant breakdown. In these models, the historical and pressure dependencies of these phenomena combining the effects of operation parameters were addressed. These interactive friction models could be applied to situations involving galling and lubricant breakdown in a dynamic environment such as the metal forming industry, where the use of traditional constant COF values present limits in predictive accuracy.
Anas platyrhynchos Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Anseriformes
Anatidae
Anas
Anas platyrhynchos

description: Anas platyrhynchos [spec. nov.]
A. macula alari purpurea utrinque nigra albaque, pectore rufescente. Fn. svec. 103.
Anas platyrhynchos, pedibus luteis. Aldr. orn. l. 19. c. 32. Will. orn. 284. Raj. av. 144.
Habitat in Europae maritimis.
description: Published as part of Linnaeus, Carolus, 1758, Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Stockholm :Laurentius Salvius on page 125, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
High-frequency analysis of parabolic stochastic PDEs
Creators: name: Chong, Carsten
Publisher: name: arXiv
Year: 2018
Subjects: subject: Statistics Theory (math.ST)
subject: Probability (math.PR)
subject: Methodology (stat.ME)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We consider the problem of estimating stochastic volatility for a class of second-order parabolic stochastic PDEs. Assuming that the solution is observed at a high temporal frequency, we use limit theorems for multipower variations and related functionals to construct consistent nonparametric estimators and asymptotic confidence bounds for the integrated volatility process. As a byproduct of our analysis, we also obtain feasible estimators for the regularity of the spatial covariance function of the noise.
description: Including supplementary material; accepted for publication in the Annals of Statistics
Supercontinua from integrated gallium nitride waveguides
Creators: name: Fan, Weichen
name: Ludwig, Markus
name: Rousseau, Ian
name: Arabadzhiev, Ivo
name: Ruhnke, Bastian
name: Wildi, Thibault
name: Herr, Tobias
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Supercontinua are broadband spectra that are essential to optical spectroscopy, sensing, imaging, and metrology. They are generated from ultrashort laser pulses through nonlinear frequency conversion in fibers, bulk media, and chip-integrated waveguides. For any generating platform, balancing the competing criteria of strong nonlinearity, transparency, and absence of multiphoton absorption is a key challenge. Here, we explore supercontinuum generation in integrated gallium nitride (GaN) waveguides, which combine a high Kerr-nonlinearity, mid-infrared transparency, and a large bandgap that prevents two- and three-photon absorption in the technologically important telecom C-band, where compact erbium-based pump lasers exist. Using this type of laser, we demonstrate tunable dispersive waves and gap-free spectra extending to almost 4 micron in wavelength, relevant to functional group chemical sensing. Additionally, leveraging the material's second-order nonlinearity, we implement on-chip f-2f interferometry to detect the pump laser's carrier-envelope offset frequency, which enables precision metrology. These results demonstrate the versatility of GaN-on-sapphire as a new platform for broadband nonlinear photonics.
Seeking to develop global SYK-ness
Creators: name: Khveshchenko, D. V.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Inspired by the recent interest in the Sachdev-Ye-Kitaev (SYK) model we study a class of multi-flavored one- and two-band fermion systems with no bare dispersion. In contrast to the previous work on the SYK model that would routinely assume spatial locality, thus unequivocally arriving at the so-called 'locally-critical' scenario, we seek to attain a spatially-dispersing 'globally-SYK' behavior. To that end, a variety of the Lorentz-(non)invariant space-and/or-time dependent algebraically decaying interaction functions is considered and some of the thermodynamic and transport properties of such systems are discussed.
description: Latex, no figures
Anas strepera Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Anseriformes
Anatidae
Anas
Anas strepera

description: Anas strepera [spec. nov.]
A. macula alarum rufa nigra alba. Fn. svec. 101.
Anas strepera. Gesn. av. 121.
Anas platyrhynchos, rostro nigro & plano. Aldr. orn. l. 19. c. 32. Raj. av. 145.
The godwall or gray. Will. orn. 287. t. 72.
Habitat in Europae aquis dulcibus.
description: Published as part of Linnaeus, Carolus, 1758, Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Stockholm :Laurentius Salvius on page 125, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Blockchain Price vs. Quantity Controls
Creators: name: Ndiaye, Abdoulaye
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Economics (econ.GN)
subject: FOS: Economics and business

description: This paper studies the optimal transaction fee mechanisms for blockchains, focusing on the distinction between price-based ($\mathcal{P}$) and quantity-based ($\mathcal{Q}$) controls. By analyzing factors such as demand uncertainty, validator costs, cryptocurrency price fluctuations, price elasticity of demand, and levels of decentralization, we establish criteria that determine the selection of transaction fee mechanisms. We present a model framed around a Nash bargaining game, exploring how blockchain designers and validators negotiate fee structures to balance network welfare with profitability. Our findings suggest that the choice between $\mathcal{P}$ and $\mathcal{Q}$ mechanisms depends critically on the blockchain's specific technical and economic features. The study concludes that no single mechanism suits all contexts and highlights the potential for hybrid approaches that adaptively combine features of both $\mathcal{P}$ and $\mathcal{Q}$ to meet varying demands and market conditions.
Probing valley phenomena with gate-defined valley splitters
Creators: name: Luna, Juan Daniel Torres
name: Vilkelis, Kostas
name: Manesco, Antonio L. R.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Despite many reports of valley-related phenomena in graphene and its multilayers, current transport experiments cannot probe valley phenomena without the application of external fields. Here we propose a gate-defined valley splitter as a direct transport probe for valley phenomenon in graphene multilayers. First, we show how the device works, its magnetotransport response, and its robustness against fabrication errors. Secondly, we present two applications for valley splitters: (i) resonant tunneling of quantum dots probed by a valley splitter shows the valley polarization of dot levels; (ii) a combination of two valley splitters resolves the nature of order parameters in mesoscopic samples.
description: 16 pages, 7 figures
Anas bucephala Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Anseriformes
Anatidae
Anas
Anas bucephala

description: Anas bucephala [spec. nov.]
A. albida, dorso remigibusque nigris, capite supra infraque tumido sericeo nitente.
Anas minor, purpureo capite. Catesb. car. 1. p. 95. t. 95.
Habitat in aquis dulcibus Americae septentrionalis.
description: Published as part of Linnaeus, Carolus, 1758, Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Stockholm :Laurentius Salvius on page 125, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
A Bijection Between the Adjoint and Coadjoint Orbits of a Semidirect Product
Creators: name: Arathoon, Philip
Publisher: name: arXiv
Year: 2018
Subjects: subject: Representation Theory (math.RT)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We prove that there exists a geometric bijection between the sets of adjoint and coadjoint orbits of a semidirect product, provided a similar bijection holds for particular subgroups. We also show that under certain conditions the homotopy types of any two orbits in bijection with each other are the same. We apply our theory to the examples of the affine group and the Poincaré group, and discuss the limitations and extent of this result to other groups.
description: 13 pages
MEASURES OF ECONOMIC WELFARE AND THE SKEWNESS OF INCOME DISTRIBUTIONS
Creators: name: Silber, Jacques
name: Silber, Jacques
Publisher: name: Unknown
Year: 1986
Subjects: Community/Rural/Urban Development

description: This study suggests that high values of the Gini Index of Inequality may be related to the skewness rather than to the dispersion of income distributions. Since skewness to the right and dispersion should have opposite effects on social welfare, a new index GA is proposed, which adjusts the Gini Index for the asymmetry of income distributions. Illustrations based on data on the distributions of household incomes in various countries in 1968 confirm the relevance of the suggestions made.
High pseudomoments of the Riemann zeta function
Creators: name: Brevig, Ole Fredrik
name: Heap, Winston
Publisher: name: arXiv
Year: 2018
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: The pseudomoments of the Riemann zeta function, denoted $\mathcal{M}_k(N)$, are defined as the $2k$th integral moments of the $N$th partial sum of $ζ(s)$ on the critical line. We improve the upper and lower bounds for the constants in the estimate $\mathcal{M}_k(N) \asymp_k (\log{N})^{k^2}$ as $N\to\infty$ for fixed $k\geq1$, thereby determining the two first terms of the asymptotic expansion. We also investigate uniform ranges of $k$ where this improved estimate holds and when $\mathcal{M}_k(N)$ may be lower bounded by the $2k$th power of the $L^\infty$ norm of the $N$th partial sum of $ζ(s)$ on the critical line.
description: This paper has been accepted for publication in Journal of Number Theory
An Explainable and Conformal AI Model to Detect Temporomandibular Joint Involvement in Children Suffering from Juvenile Idiopathic Arthritis
Creators: name: Christensen, Lena Todnem Bach
name: Straadt, Dikte
name: Vassis, Stratos
name: Lillelund, Christian Marius
name: Stoustrup, Peter Bangsgaard
name: Pauwels, Ruben
name: Pedersen, Thomas Klit
name: Pedersen, Christian Fischer
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Juvenile idiopathic arthritis (JIA) is the most common rheumatic disease during childhood and adolescence. The temporomandibular joints (TMJ) are among the most frequently affected joints in patients with JIA, and mandibular growth is especially vulnerable to arthritic changes of the TMJ in children. A clinical examination is the most cost-effective method to diagnose TMJ involvement, but clinicians find it difficult to interpret and inaccurate when used only on clinical examinations. This study implemented an explainable artificial intelligence (AI) model that can help clinicians assess TMJ involvement. The classification model was trained using Random Forest on 6154 clinical examinations of 1035 pediatric patients (67% female, 33% male) and evaluated on its ability to correctly classify TMJ involvement or not on a separate test set. Most notably, the results show that the model can classify patients within two years of their first examination as having TMJ involvement with a precision of 0.86 and a sensitivity of 0.7. The results show promise for an AI model in the assessment of TMJ involvement in children and as a decision support tool.
description: Accepted at EMBC 2024
title: ADCO, Huitième cartulaire de Saint-Étienne de Dijon (1661-1667), Cart. 31 (G 135), 549 folios, f. 0791
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP

description: Huitième cartulaire de Saint-Étienne de Dijon (1661-1667), Archives départementales de la Côte-d'Or, Cart. 31 (G 135), 549 folios, f. 0791, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Huitième cartulaire de Saint-Étienne de Dijon (1661-1667), Archives départementales de la Côte-d'Or, Cart. 31 (G 135), 549 folios, f. 0791, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Interaction in the Bimodal Galaxy Cluster A3528
Creators: name: Schindler, S.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: X-ray and radio continuum observations of the bimodal cluster A3528 in the Shapley Supercluster are presented. From a ROSAT PSPC pointed observation we find a marginal tendency of the intracluster gas to be hotter in the region between the two subclusters. This effect can be interpreted as the signature of interaction of the subclusters. We infer that the centres of the subclusters in A3528 will meet within a few 10^8 years. In continuum observations at 20cm and at 90cm with the Very Large Array we find four galaxies having radio emission. One of these galaxies shows a head-tail structure suggesting a motion of the galaxy through the intracluster medium. The radio tail shows an imbalance between the thermal pressure of the intra-cluster gas and the pressure of the relativistic electrons.
description: 8 pages, postscript file including 7 figures, accepted for publication in M.N.R.A.S
Additional file 5: of Heterogeneous combinatorial expression of Hoxd genes in single cells during limb development
Creators: name: P. Fabre
name: M. Leleu
name: B. Mascrez
name: Q. Lo Giudice
name: J. Cobb
name: D. Duboule
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Hematology

description: Figure S4. HoxA vs HoxD expression. Cumulative barplots showing Hoxa and Hoxd genes relative expression levels in autopod cells (A), zeugopod cells (B) and all cells together (C). (PDF 734 kb)
Quantum thermodynamics with a Josephson-photonics setup
Creators: name: Dambach, Simon
name: Egetmeyer, Paul
name: Ankerhold, Joachim
name: Kubala, Björn
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Josephson-photonics devices have emerged in the last years as versatile platforms to study light-charge interactions far from equilibrium and to create nonclassical radiation. Their potential to operate as nanoscale heat engines has also been discussed. The complementary mode of cooling is investigated here in the regimes of low and large photon occupancy, where nonlinearities are essential.
description: 6 pages, 4 figures; invited contribution to the special volume "Non-equilibrium Dynamics: Quantum Systems and Foundations of Quantum Mechanics"
The effects of military deployment and critical illness on energy homeostasis
Creators: name: Hill, Neil Edward
Publisher: name: Imperial College London
Year: 2012

description: Maintaining energy balance is critical to military performance. Severely injured military personnel in intensive care inevitably develop a catabolic state which prolongs the recovery period. Understanding the effects of deployment and injury on energy homeostasis will aid tailoring of nutritional provision to military personnel. Body composition, physical fitness, dietary intake, gut hormone and leptin levels were measured in 249 Royal Marines before, during and after a six month operational deployment in Afghanistan. Wounded volunteers were followed up during recovery and rehabilitation. Royal Marines lost significant total, lean and fat mass in the first half of their tour, which did not affect physical fitness. Leptin was significantly correlated with fat mass changes. The cohort of wounded Royal Marines was too small and heterogeneous to draw meaningful conclusions from. The orexigenic gastric hormone ghrelin has been proposed to attenuate the loss of lean body mass seen after critical illness. To investigate the effect of ghrelin on recovery from critical illness a rodent model of prolonged critical illness with gradual recovery was developed. Male Wistar rats received intraperitoneal injections of the fungal wall derivative zymosan. Biochemical, metabolic and gut hormone profiles were characterised. Continuous subcutaneous infusion of ghrelin was started 48 hours after the insult and continued for 10 days. Muscle strength and histology, and body composition were determined. Zymosan caused significant weight loss and muscle mass and reduced food intake. Ghrelin-treated rats ate more food and gained more body mass than controls, but did not alter total body protein, muscle strength or muscle morphology, though it increased adiposity and promoted fat over carbohydrate metabolism. These studies suggest loss of moderate amounts of body mass in Royal Marines did not adversely affect measures of strength, and that the gastric hormone ghrelin is unlikely to accelerate recovery of lean body mass or muscle function in critical illness cachexia.
Structural and functional studies of the Als3 adhesin from Candida albicans
Creators: name: Lin, Jing
Publisher: name: Imperial College London
Year: 2012

description: Candida spp.are the fourth most common cause of nosocomial bloodstream infections. Candida albicans, a commensal microbe, causes 90%Candidiasis. The Alsfamily (agglutinin-like sequences),a key factorinC. albicans pathogenesis, encodes large cell-surface glycoproteins which are involved in host-pathogen interactions and morphogenesis. Members of the Alsprotein family bind peptides with broad specificity and have been implicated in the binding of host cell surface and extracellular matrix proteins. Recentwork shows that Als3 is essential for C. albicans adhesion, and it can also work like an invasin and induce endocytosis in normal host cells. Previous studyfrom this laboratory shows that the N-terminal domainof Als1 isable to bind peptides and fold into the same overall topology observed for the two-domain N-terminal fragment of the clumping factor (ClfA) from Staphylococcus aureus.This observation and the promiscuous ligand specificity displayed by the Als adhesins opens the possibility of a common mechanism of adhesion shared by bacterial and fungal pathogens based on the binding of unstructured polypeptides. Such a mechanism would provide a unique mode of binding, as it circumvents the strict surface complementarity observed in most pathogen/host cell interactions.The project aims to focus on the structural and functional properties of Als3 and unravel the binding mechanism and range of affinities to ligands. Three different Als3 structures were solved during this project. Firstly, the crystal structure ofthe peptide-freeformofAls3299was solved at 1.8 Å. After that, the crystal structure of the bound formofAls3299 was available at 1.4 Å, which illustrates a promising possibility of Als3 binding mechanism. The third structure, Triple-Mutant Als3 (K59M, V116A, and Y298F), was diffracted well under micro-focus beam in Diamond light source, UK. Those three structures provide valuable information to elucidate the structure,function, and binding modeof Als3 in different angles.
Nuclear architecture and genome function in mammalian nuclei
Creators: name: Lavitas, Liron-Mark
Publisher: name: Imperial College London
Year: 2011

description: Large-scale chromatin folding is a key mechanism in gene regulation leading to variable and dynamic gene activation in each cell. Multiple mechanisms contribute to gene regulation including the binding of regulatory factors to specific genomic sequences, chromatin interactions and repositioning of genomic regions relative to specific nuclear landmarks. The aim of this thesis was to explore genome architecture at single allele-resolution either in a gene-specific context in relation to its expression pattern or in a genome-wide context. Upon viral infection, Interferon β (IFNβ), a critical player in innate immunity, is expressed stochastically only in a fraction of cells. I used Sendai virus infected mouse embryonic fibroblasts (MEFs) as a model system to study the influence of nuclear positioning on the stochastic activity of the IFNβ gene. A mouse fibroblast cell line (L929) overexpressing the IFNβ transcription factor IRF7 was used as a model of constitutive expression, for comparison. IFNβ was found to associate with the nuclear lamina in MEFs and L929 cells prior to infection and dissociate upon infection. Induced repositioning of the IFNβ gene away from the lamina by TSA treatment, in MEFs, or by IRF7 overexpression, in L929 cells, lead to higher IFNβ expression with retention of stochasticity in MEFs, but complete attenuation of stochasticity in L929 cells. Thus, the IFNβ association with the lamina correlates with its on/off state and stochastic behaviour. Identification of long-range chromatin interactions by 3C approaches plays major roles in advancing our understanding of gene regulation. However, current methodologies have several limitations. I contributed to the development of a novel genome-wide mapping technology to measure chromatin contacts. In contrast with 3C technologies, this approach is compatible with mapping high multiplicity interactions at single allele and cell resolution, in complex tissues. The dynamic nature of gene regulation lies in diverse features of large-scale chromatin folding. The IFNβ study highlights a role of lamina association in the mechanism of gene-specific stochastic transcriptional activation. The novel mapping technology will provide a genome-wide qualitative tool to study the dynamics of chromatin contacts in single cells.