cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On long-term fatigue damage estimation for a floating offshore wind turbine using a surrogate model
Creators: name: Liu, Ding Peng
name: Ferri, Giulio
name: Heo, Taemin
name: Marino, Enzo
name: Manuel, Lance
Publisher: name: arXiv
Year: 2023
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: This study is concerned with the estimation of long-term fatigue damage for a floating offshore wind turbine. With the ultimate goal of efficient evaluation of fatigue limit states for floating offshore wind turbine systems, a detailed computational framework is introduced and used to develop a surrogate model using Gaussian process regression. The surrogate model, at first, relies only on a small subset of representative sea states and, then, is supplemented by the evaluation of additional sea states that leads to efficient convergence and accurate prediction of fatigue damage. A 5-MW offshore wind turbine supported by a semi-submersible floating platform is selected to demonstrate the proposed framework. The fore-aft bending moment at the turbine tower base and the fairlead tension in the windward mooring line are used for evaluation. Metocean data provide information on joint statistics of the wind and wave along with their relative likelihoods for the installation site in the Mediterranean Sea, near the coast of Sicily. \textcolor{black}{A coupled frequency-domain model} provides needed power spectra for the desired response processes. The proposed approach offers an efficient and accurate alternative to the exhaustive evaluation of a larger number of sea states and, as such, avoids excessive response simulations.
Kalibrieren von Normalen und Messgeräten für die Formmesstechnik : Richtlinie DKD-R 4-4
Creators: name: Mitglieder Des Fachausschusses Länge Des DKD In Der Zeit Bis 2009
Publisher: name: Physikalisch-Technische Bundesanstalt (PTB)
Year: 2018
Subjects: DKD-Richtlinie
Kalibrieren
Normale und Messgeräte für die Formmesstechnik

description: Diese Richtlinie gilt für die Kalibrierung von Rundheitsnormalen (z. B. Kugeln, Halbkugeln, Zylinder), Vergrößerungsnormalen (z. B. Zylinder mit Abflachung, Mehrwellennormale, unrunde Kugeln) und Geradheitsnormalen (z. B. Zylinder, Geradheitslineale). Die verwendeten Begriffe entsprechen den in DIN ISO/TS 12181-1 für Rundheit, DIN ISO/TS 12780-1 für Geradheit und DIN EN ISO 11562 für messtechnische Eigenschaften von phasenkorrekten Filtern. Es gelten die Begriffserklärungen und Festlegungen in DIN EN ISO 1101, VDI/VDE 2631 sowie VIM (Internationales Wörterbuch der Metrologie) und darin zitierte Normen. Die Kalibrierung erfolgt durch Vergleich der Form des zu kalibrierenden Normals mit der Form einer im Messaufbau vorhandenen Formverkörperung.
Resolved millimeter-dust continuum cavity around the very low mass young star CIDA 1
Creators: name: Pinilla, Paola
name: Natta, Antonella
name: Manara, Carlo F.
name: Ricci, Luca
name: Scholz, Aleks
name: Testi, Leonardo
Publisher: name: arXiv
Year: 2018
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context. Transition disks (TDs) are circumstellar disks with inner regions highly depleted in dust. TDs are observed in a small fraction of disk-bearing objects at ages of 1-10 Myr. They are important laboratories to study evolutionary effects in disks, from photoevaporation to planet-disk interactions. Aims. We report the discovery of a large inner dust-empty region in the disk around the very low mass star CIDA 1 (M$_{\star} \sim 0.1-0.2$ M$_{\odot}$). Methods. We used ALMA continuum observations at 887$μ$m, which provide a spatial resolution of $0."21\times0."12$ ($\sim$15$\times$8 au in radius at 140 pc). Results. The data show a dusty ring with a clear cavity of radius $\sim$20 au, the typical characteristic of a TD. The emission in the ring is well described by a narrow Gaussian profile. The dust mass in the disk is $\sim$17 M$_{\oplus}$. CIDA 1 is one of the lowest mass stars with a clearly detected millimeter cavity. When compared to objects of similar stellar mass, it has a relatively massive dusty disk (less than $\sim5$% of Taurus Class II disks in Taurus have a ratio of $M_{\rm{disk}}/M_{\star}$ larger than CIDA 1) and a very high mass accretion rate (CIDA 1 is a disk with one of the lowest values of $M_{\rm{disk}}/\dot M$ ever observed). In light of these unusual parameters, we discuss a number of possible mechanisms that can be responsible for the formation of the dust cavity (e.g., photoevaporation, dead zones, embedded planets, close binary). We find that an embedded planet of a Saturn mass or a close binary are the most likely possibilities.
description: Accepted for publication in A&A, minor correction in one equation
The approximate Coupled-Cluster methods CC2 and CC3 in a finite magnetic field
Creators: name: Kitsaras, Marios-Petros
name: Grazioli, Laura
name: Stopkowicz, Stella
Publisher: name: arXiv
Year: 2023
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In this paper, we report on the implementation of CC2 and CC3 in the context of molecules in finite magnetic fields. The methods are applied to the investigation of atoms and molecules through spectroscopic predictions and geometry optimizations for the study of the atmospheres of highly-magnetized White Dwarfs (WDs). We show that ground-state finite-field (ff) CC2 is a reasonable alternative to CCSD for energies and, in particular for geometrical properties. For excited states ff-CC2 is shown to perform well for states with predominant single-excitation character. Yet, for cases in which the excited-state wavefunction has double-excitation character with respect to the reference, ff-CC2 can easily Ff-CC3, however, is shown to reproduce the CCSDT behaviour very well and enables the treatment of larger systems at a high accuracy.
Transformation Optics Applied to Plasmonics
Creators: name: Luo, Yu
Publisher: name: Imperial College London
Year: 2012

description: Lately, transformation optics (TO) has driven the development of metamaterial science, providing a direct link between a desired electromagnetic phenomenon and the material response required for its occurrence. However, this powerful framework is not restricted to the metamaterial design, and it has recently been exploited to study surface plasmon assisted phenomena. In this thesis, we mainly focus on the general strategy based on TO to design and study analytically plasmonic devices capable of efficiently harvesting light over a broadband spectrum and achieving considerable field confinement and enhancement. Using TO, we show that a finite nanoparticle with sharp geometrical features can behave like an infinite plasmonic system, thereby allowing simultaneously a broadband interaction with the incoming light as well as a spectacular nanofocusing of its energy. Various plasmonic structures are designed and studied, such as 2D crescents, groove/wedge like nanostructures, overlapping nanowires, and rough metal surfaces. Comprehensive discussions are also provided on practical issues of this problem. First, we discuss how the edge rounding at the sharp boundary affects the local field enhancement as well as the energy and bandwidth of each plasmonic resonance. In particular, the necessary conditions for achieving broadband light harvesting with blunt structures are highlighted. The TO approach is then applied to study the interaction between plasmonic nanoparticles. We demonstrate that the energy and spectral shape of the localized surface plasmon resonances can be precisely controlled by tuning the separation between the nanoparticles. Finally, we consider the extension of the TO framework to 3D geometries, and show that the 3D structure is more robust to radiative loss than its 2D counterpart. The physical insights into sharp and blunt plasmonic nanostructures presented in this thesis may be of great interest for the design of broadband light-harvesting devices, invisible and non-invasive biosensors, and slowing-light devices.
Molecular Gas in Mrk 109: Constraining the O2/CO Ratio in Chemically Young Galaxies
Creators: name: Frayer, D. T.
name: Seaquist, E. R.
name: Thuan, T. X.
name: Sievers, A.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on observations of CO(1-0) emission from the chemically young starburst galaxy Mrk 109. These observations were part of a study to constrain the O2/CO ratio in metal-deficient galaxies, which were motivated by theoretical work that suggests the possible enhancement of the O2/CO ratio in chemically young systems. Five low metallicity (Z < 0.5 Z(solar)) IRAS galaxies at redshifts z > 0.02 (required to shift the 118.75 GHz O2 line away from the atmospheric line) were searched for CO emission. We detected the CO line in only Mrk 109. From O2 observations of Mrk 109, we achieved an upper limit for the O2 column density abundance ratio of N(O2)/N(CO) < 0.31. These results provide useful constraints for the theoretical models of chemically young galaxies. We argue that either most of the molecular gas in Mrk 109 does not reside in dark clouds (Av >~ 5), or the standard equilibrium chemistry models are inadequate for metal-poor systems. The molecular gas mass implied by the CO observations of Mrk 109 is M(H2) ~= 4 x 10^{9} M(sun), and the CO data are consistent with a central starburst induced by the interaction with a nearby companion.
description: 20 pages including 5 figures and 1 table (accepted ApJ)
The Hydrogen Atom in Strong Electric Fields: Summation of the Weak Field Series Expansion
Creators: name: Hiraizumi, Ken-ichi
name: Ohshima, Yoshihisa
name: Suzuki, Hiroshi
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The order dependent mapping method, its convergence has recently been proven for the energy eigenvalue of the anharmonic oscillator, is applied to re-sum the standard perturbation series for Stark effect of the hydrogen atom. We perform a numerical experiment up to the fiftieth order of the perturbation expansion. A simple mapping suggested by the analytic structure and the strong field behavior gives an excellent agreement with the exact value for an intermediate range of the electric field, $0.03\leq E\leq0.25$. The imaginary part of the energy (the decay width) as well as the real part of the energy is reproduced from the standard perturbation series.
description: 14 pages, 8 figures
Tabanus exaestuans Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Tabanidae
Tabanus
Tabanus exaestuans

description: Tabanus exaestuans [spec. nov.]
T. oculis viridibus, abdominis segmentis margine albis, tibiis candidis.
Habitat in America meridionali. Rolander.
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 601, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
title: Физика в задачах. Оптика
title: Учебное пособие для СПО
titleType: Subtitle
Creators: name: Паршаков А.Н.
Publisher: name: Профобразование, Ай Пи Ар Медиа
Year: 2020

description: В учебном пособии на примере решения различных практических задач рассмотрены основные методы и подходы, а также базовые понятия геометрической, волновой и квантовой оптики. Подготовлено с учетом требований Федерального государственного образовательного стандарта среднего профессионального образования. Предназначено студентам всех специальностей и профессий среднего профессионального образования, изучающим дисциплину «Физика». Издание также может быть полезно студентам специальности 31.02.04 «Медицинская оптика» и профессии 12.01.03 «Сборщик очков» при изучении дисциплины «Геометрическая оптика».
Machine learning for image-based classification of Alzheimer's disease
Creators: name: Gray, Katherine Rachel
Publisher: name: Imperial College London
Year: 2012

description: Imaging biomarkers for Alzheimer's disease are important for improved diagnosis and monitoring, as well as drug discovery. Automated image-based classification of individual patients could provide valuable support for clinicians. This work investigates machine learning methods aimed at the early identification of Alzheimer's disease, and prediction of progression in mild cognitive impairment. Data are obtained from the Alzheimer's Disease Neuroimaging Initiative (ADNI) and the Australian Imaging, Biomarker and Lifestyle Flagship Study of Ageing (AIBL). Multi-region analyses of cross-sectional and longitudinal FDG-PET images from ADNI are performed. Information extracted from FDG-PET images acquired at a single timepoint is used to achieve classification results comparable with those obtained using data from research-quality MRI, or cerebrospinal fluid biomarkers. The incorporation of longitudinal information results in improved classification performance. Changes in multiple biomarkers may provide complementary information for the diagnosis and prognosis of Alzheimer's disease. A multi-modality classification framework based on random forest-derived similarities is applied to imaging and biological data from ADNI. Random forests provide consistent similarities for multiple modalities, facilitating the combination of different types of features. Classification based on the combination of MRI volumes, FDG-PET intensities, cerebrospinal fluid biomarkers, and genetics out-performs classification based on any individual modality. Multi-region analysis of MRI acquired at a single timepoint is used to show volumetric differences in cognitively normal individuals differing in amyloid-based risk status for the development of Alzheimer's disease. Reduced volumes in temporo-parietal and orbito-frontal regions in high-risk individuals from both ADNI and AIBL could be indicative of early signs of neurodegeneration. This suggests that volumetric MRI can reveal structural brain changes preceding the onset of clinical symptoms. Taken together, these results suggest that image-based classification can support diagnosis in Alzheimer's disease and preceding stages. Future work may lead to more finely meshed prognostic data that may be useful clinically and for research.
Hunterdon County comprehensive economic development strategy
Creators: name: No Name Supplied
Publisher: name: No Publisher Supplied
Year: 2014

description: In 2013, the Hunterdon County Board of Chosen Freeholders saw both the need and the opportunity to join Together North Jersey to forge a partnership and create a comprehensive economic development plan. Hunterdon County was at an economic crossroads and the decision was made to begin an extensive research and outreach project to plan the County’s economic future. This ultimately led to the creation of this Comprehensive Economic Development Strategy (CEDS), which was developed to guide Hunterdon County in regaining and maintaining economic prosperity. This document will serve as a blueprint for creating economic growth and job creation.
Induced current by a cosmic string and a brane in high-dimensional AdS spacetime
Creators: name: Santos, W. Oliveira dos
name: de Mello, E. R. Bezerra
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we investigate the bosonic current induced by a brane and a magnetic flux running along the idealized cosmic string in a $(D+1)$-dimensional anti-de Sitter (AdS) background. We consider the brane is parallel to the AdS boundary and the cosmic string is orthogonal to them. Moreover, we assume that on the brane the charged bosonic field obeys the Robin boundary condition. The brane divides the space into two regions with different properties of the vacuum state. We show that the only nonzero component of the current density is along the azimuthal direction in both regions. In order to develop this analysis we calculate, for both regions, the positive frequency Wightman functions. Both functions present a part associated with the AdS in presence of a cosmic string only, and the other part induced by the brane. In this paper we consider only the contributions induced by the brane. We show that in both regions the azimuthal current densities are odd functions of the magnetic flux along the string. Different analytic and numerical analysis are performed and an application of our results is provided for the Randall-Sundrum braneworld model with a single brane.
description: 19 pages, 2 figures. Version accepted for publication in EPJC
Machine Learning CICY Threefolds
Creators: name: Bull, Kieran
name: He, Yang-Hui
name: Jejjala, Vishnu
name: Mishra, Challenger
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Algebraic Geometry (math.AG)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: The latest techniques from Neural Networks and Support Vector Machines (SVM) are used to investigate geometric properties of Complete Intersection Calabi-Yau (CICY) threefolds, a class of manifolds that facilitate string model building. An advanced neural network classifier and SVM are employed to (1) learn Hodge numbers and report a remarkable improvement over previous efforts, (2) query for favourability, and (3) predict discrete symmetries, a highly imbalanced problem to which both Synthetic Minority Oversampling Technique (SMOTE) and permutations of the CICY matrix are used to decrease the class imbalance and improve performance. In each case study, we employ a genetic algorithm to optimise the hyperparameters of the neural network. We demonstrate that our approach provides quick diagnostic tools capable of shortlisting quasi-realistic string models based on compactification over smooth CICYs and further supports the paradigm that classes of problems in algebraic geometry can be machine learned.
description: 22 pages, 10 figures. V2: Added new results of using permutations of the CICY matrix to reduce the class imbalance when predicting discrete symmetries. V3: Corrected typing errors in table 5
title: ADCO, Ordre cistercien : comptes (1403-1423) (11 H 1161), f. 00135
Creators: name: de la Côte-d'Or, Archives départementales
name: Projet CBMA
name: CBMA/CG21/F.PETOT/2019
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
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: comptes
subject: Chartes de la Bourgogne du Moyen Âge

description: Ordre cistercien : comptes (1403-1423), Archives départementales de la Côte-d'Or, (11 H 1161). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Ordre cistercien : comptes (1403-1423), Archives départementales de la Côte-d'Or, (11 H 1161), f. 00135, in Projet CBMA - Corpus Burgundiae Medii Aevi \[Ressource en ligne\], https:// manuscrits.cbma-project.eu/
Mechanical Characterisation, Processing and Microstructure of Wheat Flour Dough
Creators: name: P Mohammed, Mohd Afandi
Publisher: name: Imperial College London
Year: 2012

description: The mechanical behaviour of dough, gluten and starch was studied in an effort to investigate whether bread dough can be treated as a two phase (starch and gluten) composite material. Mechanical loading tests revealed rate dependent behaviour for both the starch and gluten constituents of dough. There is evidence from Cryogenic Scanning Electron Microscopy (Cryo-SEM) that damage in the form of debonding between starch and gluten occurs when the sample is stretched. In addition, the Lodge material model was found to deviate from the tension and shear stress-strain test data by a considerably larger amount than from the compression test data. This could indicate that ‘damage’ is dominant along the gluten-starch interface, causing debonding; the latter occurs less under compression loading, but is more prevalent in tension and shear loading. A single-particle finite element model was developed using starch as a filler contained in a gluten matrix. The interface between starch and gluten was modelled using cohesive zone elements with damage/debonding occurring under opening/tension and sliding/shear modes. The numerical results are compared to experimental stress-strain data obtained at various loading conditions. A comparison of stress-strain curves obtained from 2D and 3D single-particle models and a multi-particle model led to good agreement, indicating that the single-particle model can be used to adequately represent the microstructure of the dough studied here. Finally, the simulation of extrusion was performed using the finite element method, where demonstration of the predictive capability of a continuum numerical model with small scale experimental results was performed.
Oral history interview with Richard Blackburn Black 1962
Publisher: name: Columbia University
Year: 2019
Subjects: Veterans
Explorers
Navies--Officers
Scientific expeditions--Antarctica

description: Education in North Dakota and on New York University's floating university, 1926-27; mining, rescue, and recovery work; Admiral Richard Byrd and second Antarctic expeditition, 1933-34; Hawaii, 1936; Antarctic Service Expedition, 1939; Hawaii and Pearl Harbor, 1941; Antarctic Support Forces, 1954-56; on Admiral Byrd's staff, 1956-57; Office of Naval Research.
Pedagogical positioning in children’s imaginative play: A cultural-historical study of learning and development of preschool children from diverse settings
Creators: name: ANAMIKA DEVI
Publisher: name: Monash University
Year: 2018
Subjects: subject: Education
subject: 130102 Early Childhood Education (excl. Maori)
subject: FOS: Educational sciences

description: Adult’s involvement in children’s imaginative play to foster better academic learning has become an important research topic in early childhood education. The goal of this study is to capture adult’s day-to-day pedagogical practices and their involvement in children’s imaginative play for supporting their learning and development in everyday social situations. The finding of this study shows the active pedagogical positioning of adults improve children’s learning and development through play. This research contributes to the early childhood community, for example, policymakers, teachers, parents, and other caregivers​, by providing some insights into the present pedagogical practices of the preschool and home settings in Australia.
The Local Luminosity Function at 25 Microns
Creators: name: Shupe, David L.
name: Fang, Fan
name: Hacking, Perry B.
name: Huchra, John P.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The local luminosity function at 25 $μ$m provides the basis for interpreting the results of deep mid-infrared surveys planned or in progress with space astrophysics missions including ISO, WIRE and SIRTF. We have selected a sample of 1458 galaxies from the IRAS Faint Source Survey with a flux density limit of 250 mJy at 25 $μ$m. The local luminosity function is derived using both parametric and non-parametric maximum-likelihood techniques, and the classical $1/V_{max}$ estimator. Comparison of these results shows that the $1/V_{max}$ estimate of the luminosity function is significantly affected by the Local Supercluster. A maximum-likelihood fit to the radial density shows no systematic increase that would be caused by density evolution of the galaxy population. The density fit is used to correct the $1/V_{max}$ estimate. We also demonstrate the high quality and completeness of our sample by a variety of methods. The luminosity function derived from this sample is compared to previously published estimates, showing the prior estimates to have been strongly affected by the Local Supercluster. Our new luminosity function leads to lower estimates of mid-infrared backgrounds and number counts.
description: 33 pages, 14 EPS figures. Accepted by ApJ
Tabanus fervens Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Tabanidae
Tabanus
Tabanus fervens

description: Tabanus fervens [spec. nov.]
T. oculis viridibus, abdomine antennisque luteis, capite thoraceque fusco.
Habitat in America australiore.
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 602, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Parallel MRI: Tools and Applications
Creators: name: Omer, Hammad
Publisher: name: Imperial College London
Year: 2012

description: Magnetic Resonance Imaging (MRI) is a non-ionising imaging modality which can provide excellent soft-tissue contrast because of a large number of flexible contrast parameters. One major limitation of MRI is its long acquisition time. Parallel MRI provides a framework to reduce the scan time. The aim of this thesis is to investigate and develop new methods to improve the performance of Parallel MRI. A new GUI (Graphical User Interface) based platform is developed using Matlab which provides an interactive environment to apply different Parallel MRI algorithms as well as helps to analyse the results. Regularization based reconstruction in Parallel MRI utilizes some prior information about the image to achieve better reconstruction results. The use of regularization in Parallel MRI is investigated and a new algorithm is proposed which uses wavelet-denoising of the coil sensitivity estimates before applying SENSE (a Parallel MRI algorithm). The results show that the proposed method is computationally efficient and offers a good alternative to regularization for lower acceleration factors (AF) in Parallel MRI. A good choice of the regularization parameter in regularization based Parallel MRI reconstructions plays a pivotal role to have good results. A new algorithm to choose the regularization parameter efficiently has been developed. This method uses the g-Factor (noise amplification parameter in Parallel MRI) as a regularization parameter and provides better reconstruction results than the contemporary methods. The proposed algorithm improves the computational efficiency of regularization based reconstructions in Parallel MRI. The use of Parallel MRI in interventional imaging can greatly reduce the time required for imaging. A novel catheter based phased array coil, composed of two independent coil elements has been developed. This phased array receiver coil can implement Parallel MRI. Some initial imaging experiments using this coil system have been performed and the results show a successful implementation of Parallel MRI on the acquired data.
$P$-wave states $T^-_{bb}$ from diquarks
Creators: name: Lin, Zu-Hang
name: An, Chun-Sheng
name: Deng, Cheng-Rong
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the $P$-wave states $T^-_{bb}$ in the isospin singlet and three excited modes [excitation occurring in the diquark $[bb]^{s_1}_{c_1}$ ($ρ$-mode), antidiquark $[\bar{u}\bar{d}]^{s_2}_{c_2}$ ($r$-mode) or between them ($λ$-mode)] from diquarks in a quark model. We analyze the dynamical behaviors of the diquark $[bb]^{s_1}_{c_1}$, antidiquark $[\bar{u}\bar{d}]^{s_2}_{c_2}$ and their correlations in the states $T^-_{bb}$ by decomposing the interactions from various sources in the model. The absolute dominant color-spin configuration, more than $99\%$, in the $ρ$-mode with $1^1P_1$ is $[bb]^0_{\bar{\mathbf{3}}}[\bar{u}\bar{d}]^0_{\mathbf{3}}$. Its energy is lower by about $18$ MeV than the threshold $\bar{B}\bar{B}$ so that it can establish a compact bound state. The chromomagnetic and meson-exchange interactions in the antidiquark $[\bar{u}\bar{d}]^0_{\mathbf{3}}$ are responsible for its binding mechanism. Two other excited modes are higher than their respective threshold. The color configuration $\mathbf{6}\otimes\bar{\mathbf{6}}$ need to be handled discreetly in the tetraquark states.
description: 7 pages, 1 figures, 4 tables, to be published in Phys. Rev. D
A Search for Supersymmetry in Events with Photons and Jets from Proton-Proton Collisions at √s = 7TeV with the CMS Detector
Creators: name: Nandi, Robin James
Publisher: name: Imperial College London
Year: 2012

description: An exclusion of Gauge Mediated Supersymmetry Breaking at 95% confidence level is made in the squark mass vs gluino mass parameter space using 1:1 fb -1 of proton-proton collisions data from the Large Hadron Collider. The event selection is based on the strong production signature of photons, jets and missing transverse energy. Missing transverse energy is used to distinguish signal from background. The background is estimated with a data driven technique. The CLs method is used to exclude models with squark mass and gluino mass up to around 1TeV.
Additional file 1 of Heterosis analysis and underlying molecular regulatory mechanism in a wide-compatible neo-tetraploid rice line with long panicles
Creators: name: Ghaleb, Mohammed
name: Li, Cong
name: Shahid, Muhammad
name: Yu, Hang
name: Liang, Junhong
name: Chen, Ruoxin
name: Wu, Jinwen
name: Liu, Xiangdong
Publisher: name: figshare
Year: 2020
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Environmental Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Additional file 1: Figure S1a. Breeding procedure of Huaduo 8. Figure S1b Panicles of Huaduo 1 (H1), Huaduo 8 (H8) and their F1 hybrid. Figure S1c Plant appearance of parents and F1 hybrid generated by crossing with Huaduo 8 (H8). Figure S2 Original images of genotypes of parental lines at pollen sterility loci (Sa, Sb and Sc) and S5 locus detected by molecular markers. Figure S3 qRT-PCR validation for the quality of transcriptomic data. Figure S4 Hierarchical clustering analysis of all expressed genes based on transcriptome data. Figure S5 Prominent functional categories of genes in the eight tissues detected by Gene ontology enrichment analysis before and 5 days after flowering in two hybrids. Figure S6 Distribution of the common seven yield-related QTLs in the two F1 hybrids, T449 × H1 [17] and T452 × H3 [16], compared to the DEGFu-sp-related QTLs detected in the present study. Figure S7 Cluster analysis of the DNA variations in LP gene of Huaduo 8. Figure S8 Samples used for RNA-seq analysis.
Advances in multi-parametric mixed-integer programming and its applications
Creators: name: Wittmann-Hohlbein, Martina
Publisher: name: Imperial College London
Year: 2013

description: At many stages of process engineering we are confronted with data that have not yet revealed their true values. Uncertainty in the underlying mathematical model of real processes is common and poses an additional challenge on its solution. Multi-parametric programming is a powerful tool to account for the presence of uncertainty in mathematical models. It provides a complete map of the optimal solution of the perturbed problem in the parameter space. Mixed integer linear programming has widespread application in process engineering such as process design, planning and scheduling, and the control of hybrid systems. A particular difficulty arises, significantly increasing the complexity and computational effort in retrieving the optimal solution of the problem, when uncertainty is simultaneously present in the coefficients of the objective function and the constraints, yielding a general multi-parametric (mp)-MILP problem. In this thesis, we present novel solution strategies for this class of problems. A global optimization procedure for mp-MILP problems, which adapts techniques from the deterministic case to the multi-parametric framework, has been developed. One of the challenges in multi-parametric global optimization is that parametric profiles, and not scalar values as in the deterministic case, need to be compared. To overcome the computational burden to derive a globally optimal solution, two-stage methods for the approximate solution of mp-MILP problems are proposed. The first approach combines robust optimization and multi-parametric programming; whereas in the second approach suitable relaxations of bilinear terms are employed to linearize the constraints during the approximation stage. The choice of approximation techniques used in the two-stage method has impact on the conservatism of the solution estimate that is generated. Lastly, multi-parametric programming based two-stage methods are applied in pro-active short-term scheduling of batch processes when faced with varied sources of uncertainty, such of price, demand and operational level uncertainty.
Exact and approximate Strang-Fix conditions to reconstruct signals with finite rate of innovation from samples taken with arbitrary kernels
Creators: name: Uriguen Garaizabal, Jose Antonio
Publisher: name: Imperial College London
Year: 2013

description: In the last few years, several new methods have been developed for the sampling and exact reconstruction of specific classes of non-bandlimited signals known as signals with finite rate of innovation (FRI). This is achieved by using adequate sampling kernels and reconstruction schemes. An example of valid kernels, which we use throughout the thesis, is given by the family of exponential reproducing functions. These satisfy the generalised Strang-Fix conditions, which ensure that proper linear combinations of the kernel with its shifted versions reproduce polynomials or exponentials exactly. The first contribution of the thesis is to analyse the behaviour of these kernels in the case of noisy measurements in order to provide clear guidelines on how to choose the exponential reproducing kernel that leads to the most stable reconstruction when estimating FRI signals from noisy samples. We then depart from the situation in which we can choose the sampling kernel and develop a new strategy that is universal in that it works with any kernel. We do so by noting that meeting the exact exponential reproduction condition is too stringent a constraint. We thus allow for a controlled error in the reproduction formula in order to use the exponential reproduction idea with arbitrary kernels and develop a universal reconstruction method which is stable and robust to noise. Numerical results validate the various contributions of the thesis and in particular show that the approximate exponential reproduction strategy leads to more stable and accurate reconstruction results than those obtained when using the exact recovery methods.
Stepper microactuators driven by ultrasonic power transfer
Creators: name: Denisov, Alexey
Publisher: name: Imperial College London
Year: 2013

description: Advances in miniature devices for biomedical applications are creating ever-increasing requirements for their continuous, long lasting, and reliable energy supply, particularly for implanted devices. As an alternative to bulky and cost inefficient batteries that require occasional recharging and replacement, energy harvesting and wireless power delivery are receiving increased attention. While the former is generally only suited for low-power diagnostic microdevices, the latter has greater potential to extend the functionality to include more energy demanding therapeutic actuation such as drug release, implant mechanical adjustment or microsurgery. This thesis presents a novel approach to delivering wireless power to remote medical microdevices with the aim of satisfying higher energy budgets required for therapeutic functions. The method is based on ultrasonic power delivery, the novelty being that actuation is powered by ultrasound directly rather than via piezoelectric conversion. The thesis describes a coupled mechanical system remotely excited by ultrasound and providing conversion of acoustic energy into motion of a MEMS mechanism using a receiving membrane coupled to a discrete oscillator. This motion is then converted into useful stepwise actuation through oblique mechanical impact. The problem of acoustic and mechanical impedance mismatch is addressed. Several analytical and numerical models of ultrasonic power delivery into the human body are developed. Major design challenges that have to be solved in order to obtain acceptable performance under specified operating conditions and with minimum wave reflections are discussed. A novel microfabrication process is described, and the resulting proof-of-concept devices are successfully characterized.
Noncommutative Superstring Worldsheet
Creators: name: Kamani, Davoud
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we consider the worldsheet of superstring as a noncommutative space. Some additional terms can be added to the superstring action, such that for ordinary worldsheet they are zero. Expansion of this extended action up to the first order of the noncommutativity parameter, leads to the new supersymmetric action for string. For the closed superstring, we obtain the boundary state that describes a brane. From the open string point of view, the new boundary conditions on the worldsheet bosons, generalize the noncommutativity of spacetime. Finally, we suggest some definitions for the noncommutativity parameter of superstring worldsheet.
description: 17 pages, Latex, no figur
title: ADCO, Ordre cistercien et abbaye de Cîteaux : comptes pour l'ordre (1337-1347), comptes du boursier (1377-1402) (11 H 1160), f. 00448
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: CBMA/CG21/F.PETOT/2017
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: comptes
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Ordre cistercien et abbaye de Cîteaux : comptes pour l'ordre (1337-1347), comptes du boursier (1377-1402), Archives départementales de la Côte-d'Or, (11 H 1160). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Ordre cistercien et abbaye de Cîteaux : comptes pour l'ordre (1337-1347), comptes du boursier (1377-1402), Archives départementales de la Côte-d'Or, (11 H 1160), f. 00448, in Projet CBMA - Corpus Burgundiae Medii Aevi \[Ressource en ligne\], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
Critical magnetic field strengths for solar coronal plumes in quiet regions and coronal holes?
Creators: name: Avallone, Ellis A.
name: Tiwari, Sanjiv K.
name: Panesar, Navdeep K.
name: Moore, Ronald L.
name: Winebarger, Amy
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Coronal plumes are bright magnetic funnels found in quiet regions (QRs) and coronal holes (CHs). They extend high into the solar corona and last from hours to days. The heating processes of plumes involve dynamics of the magnetic field at their base, but the processes themselves remain mysterious. Recent observations suggest that plume heating is a consequence of magnetic flux cancellation and/or convergence at the plume base. These studies suggest that the base flux in plumes is of mixed polarity, either obvious or hidden in SDO HMI data, but do not quantify it. To investigate the magnetic origins of plume heating, we select ten unipolar network flux concentrations, four in CHs, four in QRs, and two that do not form a plume, and track plume luminosity in SDO AIA 171 A images along with the base flux in SDO HMI magnetograms, over each flux concentrations lifetime. We find that plume heating is triggered when convergence of the base flux surpasses a field strength of 200 to 600 G. The luminosity of both QR and CH plumes respond similarly to the field in the plume base, suggesting that the two have a common formation mechanism. Our examples of non-plume-forming flux concentrations, reaching field strengths of 200 G for a similar number of pixels as for a couple of our plumes, suggest that a critical field might be necessary to form a plume but is not sufficient for it, thus, advocating for other mechanisms, e.g. flux cancellation due to hidden opposite-polarity field, at play.
description: 20 pages, 12 figures, 3 tables, accepted for publication in The Astrophysical Journal
Efficient Microwave Spin Control of Negatively Charged Group-IV Color Centers in Diamond
Creators: name: Pieplow, Gregor
name: Belhassen, Mohamed
name: Schröder, Tim
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work, we provide a comprehensive overview of the microwave-induced manipulation of electronic spin states in negatively charged group-IV color centers in diamond with a particular emphasis on the influence of strain. Central to our investigation is the consideration of the full vectorial attributes of the magnetic fields involved, which are a dc field for lifting the degeneracy of the spin levels and an ac field for microwave control between two spin levels. We observe an intricate interdependence between their spatial orientations, the externally applied strain, and the resultant efficacy in spin state control. In most work to date the ac and dc magnetic field orientations have been insufficiently addressed, which has led to the conclusion that strain is indispensable for the effective microwave control of heavier group-IV vacancies, such as tin- and lead-vacancy color centers. In contrast, we find that the alignment of the dc magnetic field orthogonal to the symmetry axis and the ac field parallel to it can make the application of strain obsolete for effective spin manipulation. Furthermore, we explore the implications of this field configuration on the spin's optical initialization, readout, and gate fidelities.
description: 13 Pages, 7 figures
Gravitational Lensing Effect on Cosmic Microwave Background Polarization
Creators: name: Zaldarriaga, Matias
name: Seljak, Uros
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the effect of gravitational lensing by matter distribution in the universe on the cosmic microwave background (CMB) polarization power spectra and temperature-polarization cross-correlation spectrum. As in the case of temperature spectrum gravitational lensing leads to smoothing of narrow features and enhancement of power on the damping tail of the power spectrum. Because acoustic peaks in polarization spectra are narrower than in the temperature spectrum the smoothing effect is significantly larger and can reach up to 10\% for $l<1000$ and even more above that. A qualitatively new feature is the generation of $B$ type polarization even when only $E$ is intrinsically present, such as in the case of pure scalar perturbations. This may be directly observed with Planck and other future small scale polarization experiments. The gravitational lensing effect is incorporated in the new version (2.4) of CMBFAST code.
description: 8 pages, 2 figures. New version of CMBFAST is available at http://arcturus.mit.edu/~matiasz/CMBFAST/cmbfast.html
Exploring the nonclassical dynamics of the "classical" Schrödinger equation
Creators: name: Navia, David
name: Sanz, Ángel S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The introduction of nonlinearities in the Schrödinger equation has been considered in the literature as an effective manner to describe the action of external environments or mean fields. Here, in particular, we explore the nonlinear effects induced by subtracting a term proportional to Bohm's quantum potential to the usual (linear) Schrödinger equation, which generates the so-called "classical" Schrödinger equation. Although a simple nonlinear transformation allows us to recover the well-known classical Hamilton-Jacobi equation, by combining a series of analytical results (in the limiting cases) and simulations (whenever the analytical treatment is unaffordable), we find an analytical explanation to why the dynamics in the nonlinear "classical" regime is still strongly nonclassical. This is even more evident by establishing a one-to-one comparison between the Bohmian trajectories associated with the corresponding wave function and the classical trajectories that one should obtain. Based on these observations, it is clear that the transition to a fully classical regime requires extra conditions in order to remove any trace of coherence, which is the truly distinctive trait of quantum mechanics. This behavior is investigated in three paradigmatic cases, namely, the dispersion of a free propagating localized particle, the harmonic oscillator, and a simplified version of Young's two-slit experiment.
description: 20 pages, 8 figures; changes in the text and equations, with respect to previous version
Phase Transitions and Gravitational Waves in a Model of $\mathbb{Z}_{3}$ Scalar Dark Matter
Creators: name: Benincasa, Nico
name: Hryczuk, Andrzej
name: Kannike, Kristjan
name: Laletin, Maxim
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Theories with more than one scalar field often exhibit phase transitions producing potentially detectable gravitational wave (GW) signal. In this work we study the semi-annihilating $\mathbb{Z}_3$ dark matter model, whose dark sector comprises an inert doublet and a complex singlet, and assess its prospects in future GW detectors. Without imposing limits from requirement of providing a viable dark matter candidate, i.e. taking into account only other experimental and theoretical constraints, we find that the first order phase transition in this model can be strong enough to lead to a detectable signal. However, direct detection and the dark matter thermal relic density constraint calculated with the state-of-the-art method including the impact of early kinetic decoupling, very strongly limit the parameter space of the model explaining all of dark matter and providing observable GW peak amplitude. Extending the analysis to underabundant dark matter thus reveals region with detectable GWs from a single-step or multi-step phase transition.
description: 37 pages, 5 figures, references added, version accepted in JHEP