cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Reconfigurable predictive systems for event streams
Creators: name: Guo, Ce
Publisher: name: Imperial College London
Year: 2016

description: The study of event streams involves modelling arrival times of discrete random events. Predictive systems for event streams infer information about future occurrences of random events. These systems are useful for various applications such as stock trading modelling and earthquake analysis, but the computational burdens limit their predictive power. This thesis addresses the design and optimisation of reconfigurable predictive systems for event streams. The first contribution of this thesis is the reconfigurable acceleration solution for the calculations in the Hawkes point process models. We propose reconfigurable dataflow engines for intensity evaluation and likelihood evaluation for univariate and multivariate Hawkes point process models. We also establish an efficient collaboration scheme between the CPU platform and the reconfigurable accelerator to speed up parameter estimation. The second contribution of this thesis is a novel predictive model for event streams. As the Hawkes point process models have limited predictive accuracy and low computational efficiency, we propose a predictive model for event streams using regression techniques. We derive the model from the intensity function of the Hawkes point process, but the final form of the proposed model works without point process models. A software system based on the proposed model reduces the prediction error by 3\%--7\% compared to a system based on the Hawkes process. A hardware-accelerated system based on the proposed model is 5--66 times faster in model fitting compared to the accelerated system based on the Hawkes process, while the two systems produce similar predictive accuracy. The third contribution of this thesis is the design of two reconfigurable accelerators for time series analysis. One accelerator is for the estimation of correlation for multivariate time series. The other accelerator is for the ordinal pattern encoding for univariate time series. We design the two accelerators by transforming the calculations of the corresponding statistical metrics into pipeline-friendly forms. Compared to multicore CPUs, both accelerators show high efficiency for large time series data.
Modelling Accretion in Protobinary Systems
Creators: name: Bate, M. R.
name: Bonnell, I. A.
name: Price, N. M.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A method for following fragmentation simulations further in time using smoothed particle hydrodynamics (SPH) is presented. In a normal SPH simulation of the collapse and fragmentation of a molecular cloud, high-density regions of gas that form protostars are represented by many particles with small separations. These high-density regions require small time steps, limiting the time for which the simulation can be followed. Thus, the end result of the fragmentation can never be definitively ascertained, and comparisons between cloud fragmentation calculations and the observed characteristics of stellar systems cannot be made. In this paper, each high-density region is replaced by a single, non-gaseous particle, with appropriate boundary conditions, which contains all the mass in the region and accretes any infalling mass. This enables the evolution of the cloud and the resulting protostars to be followed for many orbits or until most of the original cloud mass has been accreted.
description: 15 pages, uuencoded compressed postscript. Accepted MNRAS. Contains 1 of 8 figures. The full version with all 8 figures is available at http://www.ast.cam.ac.uk/preprint/PrePrint.html
Pairing Mechanism in Hunds Metal Superconductors and the Universality of the Superconducting Gap to Critical Temperature Ratio
Creators: name: Lee, Tsung-Han
name: Chubukov, Andrey
name: Miao, Hu
name: Kotliar, Gabriel
Publisher: name: arXiv
Year: 2018
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We analyze a simple model containing the physical ingredients of a Hund's metal, the local spin fluctuations with power-law correlators, $(Ω_0/|Ω|)^γ$, with $γ$ greater than one, interacting with electronic quasiparticles. While the critical temperature and the gap change significantly with varying parameters, the $2Δ_{max}/k_BT_c$ remains close to twice the BCS value in agreement with experimental observations in the iron-based superconductors (FeSC).
Psittacus paradisi Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Psittaciformes
Psittacidae
Psittacus
Psittacus paradisi

description: Psittacus paradisi [spec. nov.]
P. brachyurus luteus, angulo abdominis rectricibusque basi rubris.
Psittacus paradisi ex cuba. Catesb. car. 1. p. 10. t. 10.
Habitat in America.
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 101, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
South Asian precipitation response to regional sulphur dioxide emissions in a global climate model
Creators: name: Shawki, Dilshad
Publisher: name: Imperial College London
Year: 2017

description: Aerosols have an inhomogeneous distribution across the globe because of their short lifetimes in the atmosphere. They impose a localised radiative forcing close to their emission source that is effective at driving circulation changes and influencing the hydrological cycle. One such type of circulation that has recently been suggested to be affected by aerosols is the South Asian summer monsoon, which provides 80% of annual rainfall to over a billion people during the summer months. I used the UK Met Office HadGEM3 coupled global climate model to investigate, for the first time, the centennial-scale South Asian precipitation responses to removing regional anthropogenic sulphur dioxide emissions. This study is unique since these experiments have never been attempted on a scale that is multi-regional, centennial and in a fully coupled ocean-atmosphere model setup. Despite the imposed localised heating in my experiments resulting from emissions removals over the United States, Europe, East Asia, South Asia or the northern mid-latitudes as a whole, the large-scale spatial pattern and magnitude of the precipitation response over South Asia was similar for all experiments. This was due to the ocean responding to the atmosphere enabling the full response to be realised and the ocean dynamics driving a structurally similar global climate response. The sum of the responses from the experiments where the emissions are removed from the United States, Europe and East Asia resemble the response seen in the experiment where emissions are removed in the entire northern mid-latitude band, suggesting that the response is roughly linear, with East Asia being the largest contributor to the response. East Asia’s proximity to South Asia meant that it was more effective at influencing the land-sea thermal contrast, pressure gradients, and therefore the local monsoon circulation itself. On the other hand, local emissions removals, i.e. over South Asia itself, led to decreases in precipitation over central and northern India, a result not seen in any other experiment. Moreover, the response of the circulation was still found to be the main driver of the response in this case, despite changes to the clouds making them thinner and less reflective. In the future, further work is warranted to allow for comparisons with other coupled ocean-atmosphere models performing similar multi-regional experiments, to enhance confidence in our results and to further our understanding of the processes involved. Similar experiments can also be performed to explore the role of other short-lived pollutants, such as tropospheric ozone. The insight provided could prove invaluable for informing emissions reduction policies and for understanding the implications for short-term regional climate prediction.
FedSV: Byzantine-Robust Federated Learning via Shapley Value
Creators: name: Otmani, Khaoula
name: Elazouzi, Rachid
name: Labatut, Vincent
Publisher: name: arXiv
Year: 2025
Subjects: subject: Machine Learning (cs.LG)
subject: Cryptography and Security (cs.CR)
subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: In Federated Learning (FL), several clients jointly learn a machine learning model: each client maintains a local model for its local learning dataset, while a master server maintains a global model by aggregating the local models of the client devices. However, the repetitive communication between server and clients leaves room for attacks aimed at compromising the integrity of the global model, causing errors in its targeted predictions. In response to such threats on FL, various defense measures have been proposed in the literature. In this paper, we present a powerful defense against malicious clients in FL, called FedSV, using the Shapley Value (SV), which has been proposed recently to measure user contribution in FL by computing the marginal increase of average accuracy of the model due to the addition of local data of a user. Our approach makes the identification of malicious clients more robust, since during the learning phase, it estimates the contribution of each client according to the different groups to which the target client belongs. FedSV's effectiveness is demonstrated by extensive experiments on MNIST datasets in a cross-silo context under various attacks.
Perceptual Noise-Masking with Music through Deep Spectral Envelope Shaping
Creators: name: Berger, Clémentine
name: Badeau, Roland
name: Essid, Slim
Publisher: name: arXiv
Year: 2025
Subjects: subject: Sound (cs.SD)
subject: Artificial Intelligence (cs.AI)
subject: Audio and Speech Processing (eess.AS)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: People often listen to music in noisy environments, seeking to isolate themselves from ambient sounds. Indeed, a music signal can mask some of the noise's frequency components due to the effect of simultaneous masking. In this article, we propose a neural network based on a psychoacoustic masking model, designed to enhance the music's ability to mask ambient noise by reshaping its spectral envelope with predicted filter frequency responses. The model is trained with a perceptual loss function that balances two constraints: effectively masking the noise while preserving the original music mix and the user's chosen listening level. We evaluate our approach on simulated data replicating a user's experience of listening to music with headphones in a noisy environment. The results, based on defined objective metrics, demonstrate that our system improves the state of the art.
title: ADCO, Sixième cartulaire de Saint-Étienne de Dijon (1662), Cart. 30 (G 133), 441 folios, f. 842
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
name: Petot, Frédéric
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: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Sixième cartulaire de Saint-Étienne de Dijon (1662), Archives départementales de la Côte-d'Or, Cart. 30 (G 133), 441 folios, f. 842, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Sixième cartulaire de Saint-Étienne de Dijon (1662), Archives départementales de la Côte-d'Or, Cart. 30 (G 133), 441 folios, f. 842, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: http://www.wikidata.org/entity/Q15945019
description: Provenance: abbaye Saint-Étienne de Dijon
SCUBA: A common-user submillimetre camera operating on the James Clerk Maxwell Telescope
Creators: name: Holland, Wayne S.
name: Robson, E. I.
name: Gear, Walter K.
name: Cunningham, Colin R.
name: Lightfoot, John F.
name: Jenness, Tim
name: Ivison, Rob J.
name: Stevens, Jason A.
name: Ade, Peter A. R.
name: Griffin, M. J.
name: Duncan, William D.
name: Murphy, J. A.
name: Naylor, David A.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: SCUBA, the Submillimetre Common-User Bolometer Array, built by the Royal Observatory Edinburgh for the James Clerk Maxwell Telescope, is the most versatile and powerful of a new generation of submillimetre cameras. It combines a sensitive dual-waveband imaging array with a three-band photometer, and is sky-background limited by the emission from the Mauna Kea atmosphere at all observing wavelengths from 350 microns to 2 mm. The increased sensitivity and array size mean that SCUBA maps close to 10,000 times faster than its single-pixel predecessor (UKT14). SCUBA is a facility instrument, open to the world community of users, and is provided with a high level of user support. We give an overview of the instrument, describe the observing modes and user interface, performance figures on the telescope, and present a sample of the exciting new results that have revolutionised submillimetre astronomy.
description: 15 pages, 15 figures, accepted for Monthly Notices of RAS
Quark-hadron continuity under rotation: Vortex continuity or boojum?
Creators: name: Chatterjee, Chandrasekhar
name: Nitta, Muneto
name: Yasui, Shigehiro
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Quark-hadron continuity was proposed as crossover between hadronic matter and quark matter without a phase transition, based on the matching of the symmetry and excitations in both phases. In the limit of a light strange-quark mass, it connects hyperon matter and the color-flavor-locked (CFL) phase exhibiting color superconductivity. Recently, it was proposed that this conjecture could be generalized in the presence of superfluid vortices penetrating both phases (arXiv:1803.05115 [hep-ph]), and it was suggested that one hadronic superfluid vortex in hyperon matter could be connected to one non-Abelian vortex (color magnetic flux tube) in the CFL phase. Here, we argue that their proposal is consistent only at large distances; instead, we show that three hadronic superfluid vortices must combine with three non-Abelian vortices with different colors with the total color magnetic fluxes canceled out, where the junction is called a colorful boojum. We rigorously prove this in both a macroscopic theory based on the Ginzburg-Landau description in which symmetry and excitations match (including vortex cores), and a microscopic theory in which the Aharonov-Bohm phases of quarks around vortices match.
description: 8 pages, 1 figure. The content of Sec. III revised with the conclusion unchanged. References added
A multi-dimensional evidence toolkit for the evaluation of point-of-care diagnostic tests
Creators: name: Huddy, Jeremy Richard
Publisher: name: Imperial College London
Year: 2017

description: Point-of-care tests (POCT) allow for near patient or bedside tests that provide instant or rapid results that facilitate real time clinical decision making within patient pathways. Advances in technology has lead to more POCT becoming available and therefore an efficient evaluation process is required to identify the tests that bring demonstrable benefits to patients and society. This thesis provides a novel evidence-based toolkit for the multi-dimensional assessment of POCT that aims to improve the efficiency of the evidence generation process and increase the uptake of POCT devices into clinical practice where their impact can be realised. This is achieved through the development of an overarching framework, the point-of-care key evidence tool (POCKET). This generalisable checklist, developed through a mixed method approach, incorporating relevant POCT stakeholders, facilitates the robust reporting of POCT evaluation by outlining the evidence that is required for adoption by policy and decision makers. Public and patient engagement is a fundamental component of healthcare research and particularly important in the evaluation of POCT to ensure tests are acceptable to patients. To improve this process in the evaluation of POCT two innovative tools were piloted. Sequential simulation (SqS) of clinical pathways was used to demonstrate the downstream pathway implications of incorporating a POCT and the HT-36 questionnaire was created to measure the impact to life of home POCT for patients. This information will allow meaningful comparisons between different devices and inform device design. Finally, evidence alone is not enough to justify the adoption of POCT and barriers and facilitators exist. These factors are determined through the analysis of stakeholder interviews with the same methodology being applied to a case study to understand the barriers that apply to a specific device and develop mitigating strategies. The thesis concludes with an algorithm to guide the approach to the evaluation of POCT.
Towards understanding the special stability of ${\text{SrCo}\text{O}_{2.5}}$ and ${\text{HSrCo}\text{O}_{2.5}}$
Creators: name: Tsang, Sze-Chun
name: Zhang, Jingzhao
name: Tse, Kinfai
name: Zhu, Junyi
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Reversible hydrogen incorporation was recently attested [N. Lu, $\textit{et al.}$, Nature $\textbf{546}$, 124 (2017)] in ${\text{SrCo}\text{O}_{2.5}}$, the brownmillerite phase (BM) of strontium cobalt oxide (SCO), opening new avenues in catalysis and energy applications. However, existing theoretical studies of BM-SCO are insufficient, and that of ${\text{HSrCo}\text{O}_{2.5}}$, the newly-reported hydrogenated SCO (H-SCO), is especially scarce. In this work, we demonstrate how the electron-counting model (ECM) can be used in understanding the phases, particularly in explaining the stability of the oxygen-vacancy channels (OVCs), and in examining the Co valance problem. Using density-functional theoretical (DFT) methods, we analyze the crystalline, electronic, and magnetic structures of BM- and H-SCO. Based on our structure search, we discovered stable phases with large bandgaps (> 1 eV) for both BM-SCO and H-SCO, agreeing better with experiments on the electronic structures. Our calculations also indicate limited charge transfer from H to O that may explain the special stability of the H-SCO phase and the reversibility of H incorporation observed in experiments. In contrary to the initial study, our calculation also suggests intrinsic antiferromagnetism (AFM) of H-SCO, showing how the measured ferromagnetism (FM) has possible roots in hole doping.
description: 9 pages, 10 figures, 4 tables + supplemental material; post-peer review version with amendments and additional contents
Data and Pre-Trained Models from "Inter Extreme Points Geodesics for End-to-End Weakly Supervised Image Segmentation"
Creators: name: Dorent, Reuben
name: Joutard, Samuel
name: Shapey, Jonathan
name: Kujawa, Aaron
name: Modat, Marc
name: Ourselin, Sebastien
name: Vercauteren, Tom
Publisher: name: Zenodo
Year: 2021
Subjects: InExtremIS
Weakly supervised
Medical Image Segmentation

description: Data and pre-trained models from InExtremIS: Dorent, et al: ""Inter Extreme Points Geodesics for End-to-End Weakly Supervised Image Segmentation". MICCAI (2021)

 "InExtremIS_labels.zip" contains: Manual segmentations performed in consensus by the treating neurosurgeon and physicist. Manual extreme points performed by a biomedical engineer Simulated extreme points generated using the manual segmentations The pre-computed geodesics using the image gradient information only and with the Euclidean distance term "models.zip" contains the pre-trained models used in the experiments.
Electron beam driven generation of frequency-tunable isolated relativistic sub-cycle pulses
Creators: name: Thiele, Illia
name: Siminos, Evangelos
name: Fülöp, Tünde
Publisher: name: arXiv
Year: 2018
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We propose a novel scheme for frequency-tunable sub-cycle electromagnetic pulse generation. To this end a pump electron beam is injected into an electromagnetic seed pulse as the latter is reflected by a mirror. The electron beam is shown to be able to amplify the field of the seed pulse while upshifting its central frequency and reducing its number of cycles. We demonstrate the amplification by means of 1D and 2D particle-in-cell simulations. In order to explain and optimize the process, a model based on fluid theory is proposed. We estimate that using currently available electron beams and terahertz pulse sources, our scheme is able to produce mJ-strong mid-infrared sub-cycle pulses.
description: 8 figures
Psittacus festivus Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Psittaciformes
Psittacidae
Psittacus
Psittacus festivus

description: Psittacus festivus [spec. nov.]
P. brachyurus viridis, fronte purpurascente, superciliis gulaque caeruleis, dorso sanguineo.
Habitat in Indiis.
Corpus magnitudine Columbae.
Psittaci monogami, per paria incedunt, garrulae, loquaces, dociles, longaevae, victitant imprimis nucibus, glandibus, sem. cucurbitarum, Carthami; scandunt rostro, irati pennas erigunt, meditabundi.
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 101, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
An Open Science Approach to Machine Learning in Biomedical Research
Creators: name: Almarzouq, Batool
Publisher: name: Zenodo
Year: 2021
Subjects: open science
saudi arabia
biomedical research
machine learning
git
data science
version control
global south

description: A talk titled "An Open Science Approach to Machine Learning in Biomedical Research" delivered at the Saudi Data Community. It is a part of a series of talks and workshops to introduce open Science practices to the Saudi Community. The talk briefly gives an overview of the impact of machine learning methodologies in biomedical research. It then explains how an open science approach could help overcome the "replication crisis" and present "the turing way" as a guide to reproducible and collaborative research practices. The talk is available online
Characterization of nanoparticles generated in reacting flows
Creators: name: Garcia Gonzalez, Carlos Enol
Publisher: name: Imperial College London
Year: 2018

description: In this thesis, particle formation in reacting flows is investigated experimentally. Two separate systems are considered. First, silica particle synthesis is characterized in a cold, turbulent jet doped with trace amounts of silane gas that issues into a vitiated co-flow. Additionally, soot formation is characterized in a laminar ethylene diffusion flame. Laser diagnostic techniques are the cornerstone of this work and make it possible to perform measurements with minimal disruption to the system. In both scenarios, elastic light scattering (ELS) and OH-PLIF are employed to obtain experimental signals that contain information about temperature, particle formation, OH concentration and other physical quantities. Additionally, line-of-sight extinction is used in the soot-forming system to recover integrated soot volume fraction profiles and multi-angle light scattering (MALS) is demonstrated on the silica-forming system to obtain in-situ information about particle size. Laser-based datasets are supplemented by probe measurements, including temperature profiles measured using radiation-corrected thermocouples and TEM analysis of particle samples obtained by location-specific thermophoretic sampling. Fully-defined numerical models, available in both scenarios, are validated following an unconventional approach based on the comparison of “predicted signals” with experimentally-obtained signals, as a means to avoid introducing additional assumptions. Satisfactory agreement is found, even though some discrepancies remain concerning silica particle formation, which are likely related to uncertainties in precursor chemistry and nucleation. Nevertheless, this is one of a few joint numerical and experimental studies that address particle formation under turbulent conditions. Regarding soot formation in laminar flames, a consistent underprediction of soot formation on the centreline is identified, which is believed to be a limitation of the acetylene-based model. In summary, this work uses optical diagnostic techniques to generate extensive datasets of particle-forming reacting jets, making a major contribution towards the validation of computational tools to predict particle formation in turbulent reacting flows as well as soot formation in laminar flames.
Physical Conditions in the Seyfert Galaxy NGC 2992
Creators: name: Allen, Mark G.
name: Dopita, Michael A.
name: Tsvetanov, Zlatan I.
name: Sutherland, Ralph S.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This paper presents long slit spectral maps of the bi-cone shaped extended narrow line region (ENLR) in the Seyfert galaxy NGC 2992. We investigate the physical properties of the ENLR via emission line diagnostics, and compare the observations to shock and photoionization models for the excitation mechanism of the gas. The line ratios vary as a function of position in the ENLR, and the loci of the observed points on line ratio diagrams are shown to be most consistent with shock+precursor model grids. We consider the energetics of a nuclear ionizing source for the ENLR, and perform the q-test in which the rate of ionizing photons from the nucleus is inferred from measurements of the density and ionization parameter. The q-test is shown to be invalid in the case of NGC 2992 because of the limitations of the [S II]6717/6731 density diagnostic. The excitation of the gas is shown to be broadly consistent with the kinematics, with higher [N II]6583/H-alpha present in the more dynamically active region. We also show that the pressure associated with the X-ray emitting plasma may provide a large fraction of the pressure required to power the ENLR via shocks.
description: 55 pages, 49 figures, ApJ accepted September 9, 1998. Figures 1a-f are provided in jpeg format
Dorylaimus macrodorus de Man.
Creators: name: Menzel, Rich.
Publisher: name: Zenodo
Year: 1913
Subjects: Biodiversity
Taxonomy
Animalia
Nematoda
Chromadorea
Rhabditida
Criconematidae
Dorylaimus
Dorylaimus macrodorus

description: Dorylaimus macrodorus de Man.
1884. de Man, Monographie, 168—169.
 1912. id. Helminthologische Beiträge. Zool. Jahrb. Suppl. XV, 1. Ed. Festschrift f. Prof. Dr. J. W. Spengel. S. 454—456.
 Von dieser seltenen Art war bis vor kurzem nur das Weibchen bekannt, welches de Man in feuchter Erde bei Leiden fand. Neuerdings (l. c. 1912) beschreibt er auch das Männchen, von welchem 2 Exemplare>im Mai 1911 in sandiger mit Moos bedeckter Erde beim Fuß eines Baumes in dem Liesbosch unweit Breda" gefunden wurden. In der Schweiz ist die Art im ganzen Alpengebiet verbreitet, in Höhen von 2000 — 4000 m, und zwar in beiden Geschlechtern.
description: Published as part of Menzel, Rich., 1913, Mononchus zschokkei n. sp. und einige wenig bekannte, für die Schweiz neue freilebende Nematoden, pp. 408-413 in Zoologischer Anzeiger 42 on page 412, DOI: 10.5281/zenodo.10797276
Analysis of Galaxy Morphology and Evolution using the Pointwise Dimension
Creators: name: Best, Jason S.
name: Charlton, Jane C.
name: Mayer-Kress, Gottfried
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we explore the application of the pointwise dimension (PD) analysis as a large-scale structure descriptor to the RC3 catalog of galaxies (de Vaucouleurs et al. 1991). This technique, which originated in the field of fractal geometry (Mandelbrot 1983) and found many applications in non-linear dynamics, is particularly illuminating in the study of correlations between morphology and environment. To our knowledge the technique is being applied for the first time to the study of galaxy morphology and evolution. The PD is the slope of the curve representing the number of galaxies within some radius, determined separately for each galaxy in the catalog. Thus the distributions of PD's can be compared for subsamples based on morphological type or luminosity. The conclusions of this analysis of RC3 are: 1) The PD elucidates the tendency for early-type galaxies to cluster more than late-type galaxies; however, there is considerable overlap between these populations. 2) The PD statistic does not find a significant relationship between luminosity and clustering in RC3, but it could be an effective diagnostic in larger 2D catalogs. 3) The majority of galaxies in RC3 (excluding clusters) are spread out in space much like a random distribution. A population of objects that traces the distribution of galaxies, but avoids clusters, would have only small correlations. It is worthwhile to pursue application of the PD to larger catalogs with a wider range of luminosities.
description: 13 pages uuencoded and compressed Postscript file. Full text, including figures, available at http://www.astro.psu.edu/users/best/Kingdom@/Academic@/fractal_paper.html or at ftp://ftp.astro.psu.edu/pub/best . To be published in January 1, 1996 issue of Astrophysical Journal
Psittacus brasiliensis Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Psittaciformes
Psittacidae
Psittacus
Psittacus brasiliensis

description: Psittacus brasiliensis [spec. nov.]
P. brachyurus viridis, facie rubra, temporibus caeruleis.
Psittacus viridis brasiliensis. Edw. av. 161. t. 161.
Habitat in Brasilia.
Avis viridis flavo contaminata. Rubrum infra flexuram alae & in exteriore latere rectricum 2. 2; caeruleum in latere exteriore remigum rectricumque primorum.
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 102, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
The effects of tidally induced disc structure on white dwarf accretion in intermediate polars
Creators: name: Murray, J. R.
name: Armitage, P. J.
name: Ferrario, L.
name: Wickramasinghe, D. T
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the effects of tidally induced asymmetric disc structure on accretion onto the white dwarf in intermediate polars. Using numerical simulation, we show that it is possible for tidally induced spiral waves to propagate sufficiently far into the disc of an intermediate polar that accretion onto the central white dwarf could be modulated as a result. We suggest that accretion from the resulting asymmetric inner disc may contribute to the observed X-ray and optical periodicities in the light curves of these systems. In contrast to the stream-fed accretion model for these periodicities, the tidal picture predicts that modulation can exist even for systems with weaker magnetic fields where the magnetospheric radius is smaller than the radius of periastron of the mass transfer stream. We also predict that additional periodic components should exist in the emission from low mass ratio intermediate polars displaying superhumps.
description: 9 pages, 5 figures, accepted for publication in MNRAS
Metamaterial MRI-based sensor for the post-operative monitoring of colorectal anastomosis
Creators: name: Kamel, Hanan
Publisher: name: Imperial College London
Year: 2018

description: Anastomotic leakage (AL) is the leading cause of morbidity and mortality after bowel anastomosis, a surgical procedure used to restore luminal continuity after bowel tumour resection. Even after years of research, its occurrence has not decreased, and new methods of monitoring the wound and predicting anastomotic failure are therefore urgently required. Here we propose the use of an internal coil to increase the signal-to-noise ratio (SNR) during Magnetic Resonance Imaging (MRI ) and/or Spectroscopy (MRS). Both methods may be used to identify ischemia and oedema, considered to be clinical indications of AL. The annular nature of the anastomotic surgical wound suggests the use of a coil with an annular field-of view, mounted on a Biodegradable Anastomosis Ring (BAR), a surgical device commonly used as a temporary mechanical support that is fragmented and excreted from the body after wound healing. The proposed solution is a Magneto-Inductive (MI) ring resonator, based on a set of magnetically coupled L-C resonators. Its advantages are that its separate elements fit comfortably inside the BAR, are not mechanically connected, and consequently may be fragmented and excreted with the BAR itself. A coupled pair of 8-element MI ring resonators is proposed, operating on an anti-symmetric spatial mode to avoid coupling to the B1 field during the excitation phase of MRI. However, the electrical response of an early prototype shows that insufficient rejection of uniform fields is achieved using the most obvious arrangement. Therefore, a search of the effect of design parameters on the spectra of resonant modes supported by the electrical system is carried out to identify an arrangement offering improved decoupling. A suitable design is developed, based on physical overlap between adjacent elements in the same ring, which alters the sign and magnitude of a key magnetic coupling coefficient. MRI fields-of-view are theoretically estimated for several different arrangements for signal extraction, including devices that are mutually coupled to an external read coil and directly coupled devices. Difficulties with combining mutual coupling and B1 field rejection are identified, and wired connections are proposed as a solution. It is found that a device with a single such connection gives a sensitivity pattern with partial symmetry, whereas a quadrature tap restores full symmetry. In vitro 1H MRI is then carried out at 1.5 T and 3.0 T using agar gel immersion phantoms, both for mutually coupled systems and for directly coupled systems. As expected, mutual coupling is found to be an unsuitable readout method for a device operating on its anti-symmetric mode, but does allow analysis of the effectiveness of B1 field decoupling. Directly coupled devices operate essentially as expected, providing up to 15-fold local enhancement in SNR, compared to the system body coil.
The Influence of Binary Stars on Dwarf Spheroidal Galaxy Kinematics
Creators: name: Hargreaves, J. C.
name: Gilmore, G.
name: Annan, J. D.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have completed a Monte-Carlo simulation to estimate the effect of binary star orbits on the measured velocity dispersion in dwarf spheroidal galaxies. This paper analyses previous attempts at this calculation, and explains the simulations which were performed with mass, period and ellipticity distributions similar to that measured for the solar neighbourhood. The conclusion is that with functions such as these, the contribution of binary stars to the velocity dispersion is small. The distributions are consistent with the percentage of binaries detected by observations, although this is quite dependent on the measuring errors and on the number of years over which measurements have been taken. For binaries to be making a significant contribution to the dispersion measured in dSph galaxies, the distributions of the orbital parameters would need to be very different from those of stars in the solar neighbourhood. In particular more smaller period orbits with higher mass secondaries would be required. The shape of the velocity distribution may help to resolve this issue when more data becomes available. In general, the scenarios producing a larger apparent dispersion have a velocity distribution which deviates more clearly from Gaussian.
description: MNRAS in press, uuencoded ps file
ASPETTI PALEOAMBIENTALI DELLA ZONA DI RACCORDO TRA L' ALTO DI CANZO ED IL BACINO DEL M. GENEROSO. CONTRIBUTI MINERALOGICI E SEDIMENTOLOGICI.
Creators: name: Brambilla, Fabio
Publisher: name: Zenodo
Year: 1982
Subjects: Formazione di Sogno
Canzo
Mesozoic
Jurassic
Toarcian
Maglio
Gajum
Geologia
Lombardia
Sudalpino
Geologia della Lombardia
Southern Alps
Glauconite
Giurassico
Toarciano

description: Il presente lavoro-si riferisce a uno studio su di un affioramento, precedentemente ignoto, che ho scoperto e segnalato al prof. Gaetani, della Formazione di Sogno (Toarciano), nei pressi di Canzo (Como).

Da questa interpretazione dei vari livelli costituenti la sezione Maglio della F. di Sogno possiamo cosi ipotizzare l'evoluzione del margine inferiore del pendio del paleoalto di Canzo.All'inizio del Toarciano si delinea ai piedi del paleo-alto un piccolo truogolo, con acque frequentemente stagnanti sul fondo, che tende a divenire anossigenico.La contemporanea trasgressione toarciana su aree emerse mette in circolazione nel mare le argille (illite, clorite, montmorillonite) che si erano formate sulle aree continentali invase dal mare.Questo innalzamento del livello marino, oltre a causare quindi un maggior apporto della sedimentazione detritica fine, argillosa e conseguente diluizione dei carbonati,sicuramente arricchisce le acque, circolanti sul margine della piattaforma continentale, degli ioni Fe2+ Fe3+ e K+.Ciò favorirà, dove le condizioni ambientali sono adeguate, la genesi dei minerali autigeni come la glauconite, l'ematite, la pirite, la goethite e la siderite.In seguito, la sedimentazione tenderà a colmare il truogolo e riprenderà la normale deposizione marina rappresentata dal Rosso Ammonitico Lombardo.Notiamo infine che, secondo Jen Kyns (1980), il Toarciano basale è caratterizzato, in diverse zone del globo, dalla deposizione di argille bituminose e ciò potrebbe indicarel'esistenza in quel periodo di un evento anossigenico di dimensione mondiale, di cui la formazione di Sogno può costituire un aspetto particolare.
description: La ricerca è stata condotta mediante osservazioni di campagna, rilevamento di una sezione litostratigrafica didettaglio accompagnata da una fitta campionatura, osservazione al microscopio delle sezioni sottili, riconoscimento dei minerali presenti nei vari campioni tramite diffrattogrammi ed analisi calcimetriche.Attraverso i dati ottenuti si è riconosciuto ed interpretato l'ambiente di sedimentazione e gli eventi che hanno caratterizzato la sua evoluzione.
description: Il presente testo è una copia digitalizzata (OCR) della sottotesi, con alcune necessarie revisioni grafiche, senzarevisione rielaborazioni o altre modifiche dei contenuti espressi al tempo della sua scrittura originale
Characterisation of the MICE experiment
Creators: name: Middleton, Sophie Charlotte
Publisher: name: Imperial College London
Year: 2018

description: Muon beams of low emittance would deliver intense, well-characterised neutrino beams necessary to explicate the physics of flavour at a Neutrino Factory and for high-luminosity lepton-antilepton collisions at a multi- TeV muon collider. The International Muon Ionisation Cooling Experiment (MICE), based at the Rutherford Appleton Laboratory, aims to demonstrate ionisation cooling, the technique proposed to reduce the emittance of muon beams at such facilities. An ionisation cooling channel has been constructed. The muon beam traverses a low-Z absorber material, losing energy via ionisation. The phase space volume occupied by the beam is reduced, resulting in transverse cooling. This thesis presents two independent analyses accomplished through exploiting data obtained during the “Step IV” commissioning of MICE. Muons can decay within the cooling channel. The presence of electron contaminants within MICE will generate systematic uncertainties on the cooling measurement. The angular distribution of decay electrons is dependent upon the muon polarisation. It is, therefore, imperative to characterise the impact of depolariza- tion in the channel. Chapter 4 presents a unique measurement of the polarisation of the MICE muon beam at the downstream calorimeter. For an initially unpolarised muon beam a polarisation of: -0.021 ± 0.243 (stat.) ± 0.185 (sys.) ± 0.007 (depol.) ± 0.001 (det.) is obtained, appropriately identifying the polarisation of the beam at the point of decay, within acknowledged errors. MICE is devised to possess an on-axis magnetic field. It is paramount that misalignment in the cooling channel is characterised. Chapter 5 ascertains a measurement of the central Focus Coil’s transverse position using single particle transfer matrices. No misalignment of the Focus Coil’s magnetic axis, relative to the beam axis, is observed, within the limits of the analysis. This innovative technique can be employed by any multi-element accelerator system where particle co-ordinates are quantified upon entering and exiting a constituent magnet.
Tilted accretion discs in cataclysmic variables: tidal instabilities and superhumps
Creators: name: Murray, J. R.
name: Armitage, P. J.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the growth of tidal instabilities in accretion discs in a binary star potential, using three dimensional numerical simulations. As expected from analytic work, the disc is prone to an eccentric instability provided that it is large enough to extend to the 3:1 resonance. The eccentric disc leads to positive superhumps in the light curve. It has been proposed that negative superhumps might arise from a tilted disc, but we find no evidence that the companion gravitational tilt instability can grow fast enough in a fluid disc to create a measurable inclination. The origin of negative superhumps in the light curves of cataclysmic variables remains a puzzle.
description: 7 pages, 7 figures, accepted for publication in MNRAS
$χ_{b}(3P)$ Multiplet Revisited: Ultrafine Mass Splitting and Radiative Transitions
Creators: name: Anwar, Muhammad Naeem
name: Lu, Yu
name: Zou, Bing-Song
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Invoked by the recent CMS observation regarding candidates of the $χ_b(3P)$ multiplet, we analyze the ultrafine and mass splittings among $3P$ multiplet in our unquenched quark model (UQM) studies. The mass difference of $χ_{b2}$ and $χ_{b1}$ in $3P$ multiplet measured by CMS collaboration ($10.6 \pm 0.64 \pm 0.17$ MeV) is very close to our theoretical prediction ($12$ MeV). Our corresponding mass splitting of $χ_{b1}$ and $χ_{b0}$ enables us to predict more precisely the mass of $χ_{b0}(3P)$ to be ($10490\pm 3$) MeV. Moreover, we predict ratios of the radiative decays of $χ_{bJ}(nP)$ candidates, both in UQM and quark potential model. Our predicted relative branching fraction of $χ_{b0}(3P)\toΥ(3S)γ$ is one order of magnitude smaller than $χ_{b2}(3P)$, this naturally explains the non-observation of $χ_{b0}(3P)$ in recent CMS search. We hope these results might provide useful references for forthcoming experimental searches.
Quantum Extension of the Kruskal Space-time
Creators: name: Ashtekar, Abhay
name: Olmedo, Javier
name: Singh, Parampreet
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A new description of macroscopic Kruskal black holes that incorporates the quantum geometry corrections of loop quantum gravity is presented. It encompasses both the `interior' region that contains classical singularities and the `exterior' asymptotic region. Singularities are naturally resolved by the quantum geometry effects of loop quantum gravity. The resulting quantum extension of space-time has the following features: (i) It admits an infinite number of trapped, anti-trapped and asymptotic regions; (ii) All curvature scalars have uniform (i.e., mass independent) upper bounds; (iii) In the large mass limit, all asymptotic regions of the extension have the same ADM mass; (iv) In the low curvature region (e.g., near horizons) quantum effects are negligible, as one would physically expect; and (v) Final results are insensitive to the fiducial structures that have to be introduced to construct the classical phase space description (as they must be). Previous effective theories [1-10] shared some but not all of these features. We compare and contrast our results with those of these effective theories and also with expectations based on the AdS/CFT conjecture [11]. We conclude with a discussion of limitations of our framework, especially for the analysis of evaporating black holes.
description: 47 pages, 5 figures, A short addendum is added after the last section to address misleading remarks in a recent pre-print [50] that may confuse the reader
Pairing and superconductivity in the flat band: Creutz lattice
Creators: name: Mondaini, Rubem
name: Batrouni, G. George
name: Grémaud, Benoît
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We use unbiased numerical methods to study the onset of pair superfluidity in a system that displays flat bands in the noninteracting regime. This is achieved by using a known example of flat band systems, namely the Creutz lattice, where we investigate the role of local attractive interactions in the $U < 0$ Hubbard model. Going beyond the standard approach used in these systems where weak interactions are considered, we map the superfluid behavior for a wide range of interaction strengths and exhibit a crossover between BCS and tightly bound bosonic fermion pairs. We further contrast these results with a standard two-leg fermionic ladder, showing that the pair correlations, although displaying algebraic decay in both cases, are longer ranged in the Creutz lattice, signifying the robustness of pairing in this system.
description: 11 pages, 12 figures; as published