cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Realization of a causal-modeled delayed-choice experiment using single photons
Creators: name: Yu, Shang
name: Sun, Yong-Nan
name: Liu, Wei
name: Liu, Zhao-Di
name: Ke, Zhi-Jin
name: Wang, Yi-Tao
name: Tang, Jian-Shun
name: Li, Chuan-Feng
name: Guo, Guang-Can
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Wave-particle duality constitutes one of the most intriguing features in quantum physics. A well-known gedanken experiment that provides evidence for this is the Wheeler's delayed-choice experiment based on a Mach-Zehnder interferometer. Many different versions of delayed-choice experiments have been conducted with both classical and quantum detecting devices. Recently, it was proposed that the delayed-choice experiment could be devised from the perspective of device-independent prepare-and-measure scenario. In our work, we experimentally realize this modified version with a deterministic single-photon source, and examine the wave-particle objective in a causal-modeled scheme without assistance of entanglement, which is achieved by violating the dimension witness inequalities. Our experiment also provides an intriguing perspective and exhibits the benefits of studying quantum theory from the casual model point of view.
description: manuscript need to be revised
Fast Random Integer Generation in an Interval
Creators: name: Lemire, Daniel
Publisher: name: arXiv
Year: 2018
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: In simulations, probabilistic algorithms and statistical tests, we often generate random integers in an interval (e.g., [0,s)). For example, random integers in an interval are essential to the Fisher-Yates random shuffle. Consequently, popular languages like Java, Python, C++, Swift and Go include ranged random integer generation functions as part of their runtime libraries. Pseudo-random values are usually generated in words of a fixed number of bits (e.g., 32 bits, 64 bits) using algorithms such as a linear congruential generator. We need functions to convert such random words to random integers in an interval ([0,s)) without introducing statistical biases. The standard functions in programming languages such as Java involve integer divisions. Unfortunately, division instructions are relatively expensive. We review an unbiased function to generate ranged integers from a source of random words that avoids integer divisions with high probability. To establish the practical usefulness of the approach, we show that this algorithm can multiply the speed of unbiased random shuffling on x64 processors. Our proposed approach has been adopted by the Go language for its implementation of the shuffle function.
description: to appear in ACM Transactions on Modeling and Computer Simulation
title: ADCO, Ordre cistercien : comptes (1403-1423) (11 H 1161), f. 00039
Creators: name: de la Côte-d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CBMA/CG21/F.PETOT/2019
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: comptes

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. 00039, in Projet CBMA - Corpus Burgundiae Medii Aevi \[Ressource en ligne\], https:// manuscrits.cbma-project.eu/
GSAE: an autoencoder with embedded gene-set nodes for genomics functional characterization
Creators: name: Chen, Hung-I Harry
name: Chiu, Yu-Chiao
name: Zhang, Tinghe
name: Zhang, Songyao
name: Huang, Yufei
name: Chen, Yidong
Publisher: name: arXiv
Year: 2018
Subjects: subject: Machine Learning (stat.ML)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Genomics (q-bio.GN)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Bioinformatics tools have been developed to interpret gene expression data at the gene set level, and these gene set based analyses improve the biologists' capability to discover functional relevance of their experiment design. While elucidating gene set individually, inter gene sets association is rarely taken into consideration. Deep learning, an emerging machine learning technique in computational biology, can be used to generate an unbiased combination of gene set, and to determine the biological relevance and analysis consistency of these combining gene sets by leveraging large genomic data sets. In this study, we proposed a gene superset autoencoder (GSAE), a multi-layer autoencoder model with the incorporation of a priori defined gene sets that retain the crucial biological features in the latent layer. We introduced the concept of the gene superset, an unbiased combination of gene sets with weights trained by the autoencoder, where each node in the latent layer is a superset. Trained with genomic data from TCGA and evaluated with their accompanying clinical parameters, we showed gene supersets' ability of discriminating tumor subtypes and their prognostic capability. We further demonstrated the biological relevance of the top component gene sets in the significant supersets. Using autoencoder model and gene superset at its latent layer, we demonstrated that gene supersets retain sufficient biological information with respect to tumor subtypes and clinical prognostic significance. Superset also provides high reproducibility on survival analysis and accurate prediction for cancer subtypes.
description: Presented in the International Conference on Intelligent Biology and Medicine (ICIBM 2018) at Los Angeles, CA, USA and published in BMC Systems Biology 2018, 12(Suppl 8):142
Strengths and Weaknesses of the ETSI Adaptive DCC Algorithm: A Proposal for Improvement
Creators: name: Soto, Ignacio
name: Amador, Oscar
name: Urueña, Manuel
name: Calderon, Maria
Publisher: name: arXiv
Year: 2024
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: This letter studies the adaptive Decentralized Congestion Control (DCC) algorithm defined in the ETSI TS 102 687 V1.2.1 specification. We provide insights on the parameters used in the algorithm and explore the impact of those parameters on its performance. We show how the algorithm achieves good average medium utilization while protecting against congestion, but we also show how the chosen parameters can result in slow speed of convergence and long periods of unfairness in transitory situations. Finally, we propose a modification to the algorithm which results in significant improvements in speed of convergence and fairness.
Kinematically Lopsided Spiral Galaxies
Creators: name: Swaters, R. A.
name: Schoenmakers, R. H. M.
name: Sancisi, R.
name: van Albada, T. S.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Asymmetries in the distribution of light and neutral hydrogen are often observed in spiral galaxies. Here, attention is drawn to the presence of large-scale asymmetries in their kinematics. Two examples of kinematically lopsided galaxies are presented and discussed. The shape of the rotation curve --rising more steeply on one side of the galaxy than on the other-- is the signature of the kinematic lopsidedness. It is shown that kinematic lopsidedness may be related to lopsidedness in the potential, and that even a mild perturbation in the latter can produce significant kinematical effects. Probably at least half of all spiral galaxies are lopsided.
description: 6 pages, accepted for MNRAS
Corrosion scale dynamics
Creators: name: Tautschnig, Markus Peter
Publisher: name: Imperial College London
Year: 2017

description: This work presents a methodology for simulating ionic and electronic grain boundary transport through thin films, scales or membranes with columnar grain structure. In the model developed the grain structure is idealized as a lattice of identical hexagonal cells - a honeycomb pattern. Reactions with the environment constitute the boundary conditions and drive the transport between the surfaces. Time-dependent simulations solving the Poisson equation self-consistently with the Nernst-Planck flux equations for the mobile species are performed. In the resulting Poisson-Nernst-Planck system of equations, the electrostatic potential is obtained from the Poisson equation in its integral form by summation. An object oriented C++ code has been implemented to solve the system of equations numerically. First, the model is used to interpret alumina membrane oxygen permeation experiments, in which different oxygen gas pressures are applied at opposite membrane surfaces and the resulting flux of oxygen molecules through the membrane is measured. Simulation results involving four mobile species, charged aluminum and oxygen vacancies, electrons, and holes, provide a complete description of the measurements. Second, the model is extended to simulate internal oxidation and stress generation within a thin film of alumina at conditions of high-temperature metal oxidation. The steady-state stresses predicted are compatible with experimental measurements of lateral growth stresses in alumina scale growth experiments. The hypothesized p-n ionic transition within the alumina grain boundaries is observed. In limiting cases the more general simulations are closely related to the Wagner theory of metal oxidation. The Wagner theory assumes local ionic equilibrium while the simulation results demonstrate the possibility of a significant deviation from local Schottky equilibrium within an oxide scale at conditions of steady-state growth. The deviation is related to stress generation, and limits the applicability of the Wagner theory.
Noncompact complete Riemannian manifolds with dense eigenvalues embedded in the essential spectrum of the Laplacian
Creators: name: Jitomirskaya, Svetlana
name: Liu, Wencai
Publisher: name: arXiv
Year: 2018
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We prove sharp criteria on the behavior of radial curvature for the existence of asymptotically flat or hyperbolic Riemannian manifolds with prescribed sets of eigenvalues embedded in the spectrum of the Laplacian. In particular, we construct such manifolds with dense embedded point spectrum and sharp curvature bounds.
description: References updated, GAFA to appear
A single-molecule view of CTCF-mediated DNA looping
Creators: name: Bloznelyte, Kotryna
Publisher: name: Imperial College London
Year: 2017

description: Genome folding is a key aspect of nuclear processes in eukaryotic cells, underlying proper gene expression, orderly DNA replication and genomic stability. CTCF and cohesin have emerged as two key architectural proteins that mediate long-range DNA interactions and are essential for proper genome folding. Both proteins are found enriched at the base of chromatin loops and the borders of self-interacting chromatin domains, which are a major structural and functional feature of genome organisation in interphase. CTCF binding sites at the base of chromatin loops show a strong preference for convergent orientation along the linear DNA sequence. The mechanistic features underlying the role of CTCF in loop formation are incompletely understood. In particular, it is unclear how CTCF binding directionality controls loop formation. There is growing support from computational and experimental studies for the loop extrusion model, which proposes that a cohesin-based complex extrudes DNA loop until it is blocked by encountering convergently oriented CTCF sites. This thesis focuses on investigating molecular features of CTCF-DNA interaction to gain insight into how CTCF executes its functions in genome folding, and touches on the role of cohesin in this context. In particular, we investigated whether CTCF binding induces a bend in DNA, which might provide a mechanism for biasing loop formation or halting loop extrusion. We did not detect bending in single molecule imaging assays. However, we discovered that CTCF protein alone can induce DNA loop formation in vitro. The frequency of these looping events did not depend on the orientation of the CTCF binding sites, suggesting that additional factors are required to impose the preference for convergence in vivo. To investigate this further, we erformed mass spectrometry analysis to identify interaction partners of DNA-bound CTCF, and generated tools to study the particular contribution of cohesin towards CTCF-based DNA looping with single molecule fluorescence microscopy.
Kinetic magnetised transport in ablating laser-produced plasmas
Creators: name: Hill, Dominic
Publisher: name: Imperial College London
Year: 2018

description: Irradiation nonuniformity is a major source of degrading target performance at ongoing spherical- direct-drive experiments at OMEGA [2, 3] and polar-direct-drive experiments at the National Ignition Facility [4]. Laser energy is deposited in the underdense plasma and transported, through the conduction zone, towards the cold target surface. The damage of irradiation nonuniformity is mitigated by thermal smoothing in this conduction zone. Heat flow, tangen- tial to the target surface, attenuates perturbation amplitudes before they imprint themselves onto the target surface, whereupon they seed hydrodynamic instabilities. Epperlein [5] showed that nonlocal suppression of the heat flux tangential to the target surface may severely reduce the thermal smoothing efficiency relative to local models. However, in this transverse direction, nonlocal suppression of the heat flux also competes with the magnetised Righi-Leduc heat flow [6]. Furthermore, nonlocality modifies the thermal response time of the plasma [7], which becomes pertinent when considering perturbations seeded by rapidly varying laser speckles of an optically smoothed beam [8]. In this thesis, I study the effects of how nonlocal modification of the lateral transport, the temporal response and magnetised transport may combine and interplay to influence thermal smoothing. Two dimensional Vlasov-Fokker-Planck simulations of the conduction zone of planar ablating targets are performed. These simulations are novel in the inclusion of both ablation and mag- netic field within a kinetic study of thermal smoothing. The key result is that magnetic fields may significantly reduce thermal smoothing efficiency. A novel phase inversion is discovered, caused by the magnetised Righi-Leduc heat flow. It is shown that magnetised transport effects become important even for small Hall parameters (ωτ <0.05). The thermal smoothing of a time evolving speckle-like perturbation is investigated. Self- generated magnetic fields are found to significantly affect the plasma temporal response. The perturbation correlation time may grow to more than double the laser heating value as a result of magnetic field build-up within the conduction zone.
title: ADCO, Cartulaire de Cîteaux pour les domaines de Beaune (XVe siècle), Cart. 177 (11 H 289), 197 folios, f. 0071
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/2015
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Cartulaire de Cîteaux pour les domaines de Beaune (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 177 (11 H 289), 197 folios, f. 0071, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de Cîteaux pour les possessions d’Izeure (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 177 (11 H 289), 197 folios, f. 0071, 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
ИЗУЧЕНИЕ КИНЕТИКА ЭКСТРАКЦИИ ИРИДОИДОВ ИЗ CISTANCHE SALSA
Creators: name: Базарбаева, А.Б.
name: Сотимов, Г.Б.
name: Бахтиёров, Ж.Г.
Publisher: name: Zenodo
Year: 2024

description: Растения рода Cistanche salsa широко использовались для лечения различных заболеваний, особенно в Китайский и Японский медицине. Китайский медицине C. salsa рекомендуют при нарушениях в мужской и женской половой сфере и для улучшения памяти. За свой лечебные свойства растения привлекает внимания ученых всего мира [1].
title: Деловые коммуникации
title: Практикум
titleType: Subtitle
Creators: name: Захарова И.В.
Publisher: name: Ай Пи Ар Медиа
Year: 2019

description: Практикум содержит задания для анализа индивидуального и группового поведения работников в процессе делового общения и социально-психологические тесты, диагностирующие личностные качества, значимые при деловых коммуникациях. Обучающимся предлагаются упражнения, направленные на формирование навыков делового общения в ситуациях совещаний, публичного выступления, переговоров, деловой переписки, электронных коммуникаций, кросскультурных коммуникаций. Материалы практикума могут быть использованы на практических занятиях по дисциплинам «Деловые коммуникации», «Психология делового общения», «Менеджмент», при проведении деловых игр, психологических тренингов, а также при подготовке творческих проектов. Практикум соответствует Федеральному государственному образовательному стандарту высшего образования. Для студентов, обучающихся по направлениям подготовки бакалавров 38.03.01 «Экономика», 38.03.04 «Государственное и муниципальное управление», 43.03.01 «Сервис», 43.03.02 «Туризм», 39.03.01 «Социология».
A new radio double lens from CLASS: B1127+385
Creators: name: Koopmans, L. V. E.
name: de Bruyn, A. G.
name: Marlow, D. R.
name: Jackson, N.
name: Blandford, R. D.
name: Browne, I. W. A.
name: Fassnacht, C. D.
name: Myers, S. T.
name: Pearson, T. J.
name: Readhead, A. C. S.
name: Wilkinson, P. N.
name: Womble, D.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the discovery of a new gravitational lens system with two compact radio images separated by 0.701+-0.001 arcsec. The lens system was discovered in the Cosmic Lens All Sky Survey (CLASS) as a flat spectrum radio source. Both radio components show structure in a VLBA 8.4 GHz radio image. No further extended structure is seen in either the VLA, MERLIN or VLBA images. Hubble Space Telescope (HST) WFPC2 images in F555W and F814W show two extended objects close to the radio components, which we identify as two lens galaxies. Their colours and mass-to-light ratios seem to favour two late-type spiral galaxies at relatively high redshifts (z_d>~0.5). Faint emission is also detected at positions corresponding to the radio images. A two-lens mass model can explain the observed VLBA structure. The best fit model has a reduced chi^2 of 1.1. The relative positions of the VLBA subcomponents are reproduced within 0.08 mas, the flux density ratios within 0.19. We also reproduce the position angle and separation of the two VLBA subcomponents in A and B within the observational errors, which we consider strong evidence for the validity of the lens model. Moreover, we find a surface density axis ratio of 0.74^{+0.10}_{-0.12} for the primary lens (G1), consistent with the surface brightness axis ratio of 0.69+-0.15. Also, the surface density position angle of 4.9^{+28.2}_{-22.4} degree of G1 compares well with the -6+-13 degree position angle of the surface brightness distribution. The errors indicate the 99 per cent confidence interval.
description: 9 pages, 6 figures, MNRAS in press
Arveson extreme points span free spectrahedra
Creators: name: Evert, Eric
name: Helton, J. William
Publisher: name: arXiv
Year: 2018
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: Primary 47L07, Secondary 46L07, 90C22

description: Let $ SM_n(\mathbb{R})^g$ denote $g$-tuples of $n \times n$ real symmetric matrices. Given tuples $X=(X_1, \dots, X_g) \in SM_{n_1}(\mathbb{R})^g$ and $Y=(Y_1, \dots, Y_g) \in SM_{n_2}(\mathbb{R})^g$, a matrix convex combination of $X$ and $Y$ is a sum of the form \[ V_1^* XV_1+V_2^* Y V_2 \quad \quad \quad V_1^* V_1+V_2^* V_2=I_n \] where $V_1:\mathbb{R}^n \to \mathbb{R}^{n_1}$ and $V_2:\mathbb{R}^n \to \mathbb{R}^{n_2}$ are contractions. Matrix convex sets are sets which are closed under matrix convex combinations. A key feature of matrix convex combinations is that the $g$-tuples $X, Y$, and $V_1^* XV_1+V_2^* Y V_2$ do not need to have the same size. As a result, matrix convex sets are a dimension free analog of convex sets. While in the classical setting there is only one notion of an extreme point, there are three main notions of extreme points for matrix convex sets: ordinary, matrix, and absolute extreme points. Absolute extreme points are closely related to the classical Arveson boundary. A central goal in the theory of matrix convex sets is to determine if one of these types of extreme points for a matrix convex set minimally recovers the set through matrix convex combinations. This article shows that every real compact matrix convex set which is defined by a linear matrix inequality is the matrix convex hull of its absolute extreme points, and that the absolute extreme points are the minimal set with this property. Furthermore, we give an algorithm which expresses a tuple as a matrix convex combination of absolute extreme points with optimal bounds. Similar results hold when working over the field of complex numbers rather than the reals.
description: 28 pages; includes a table of contents and an index
Subcellular localisation of the cir multigene family in plasmodium chabaudi
Creators: name: Amis, Sarah
Publisher: name: Imperial College London
Year: 2018

description: The pir genes are a multigene family found in every species of the malaria parasite Plasmodium so far sequenced. Their preservation in large numbers in the parasite genome implies they fulfill a function or functions of evolutionary importance. Other Plasmodium multigene families, most notably the P. falciparum var family, have been linked to immune evasion and pathogenesis, and it has been speculated that pirs may have similar functions. Previous RNA Sequencing (RNA Seq) data has demonstrated that pir expression both varies with parasite lifecycle stage, and changes dramatically between mosquito transmitted and serially blood passaged infections – concurrent with changes in parasite virulence. This thesis uses the P. chabaudi murine model of malaria to investigate the localisation of both specific candidate CIRs (PIR in P. chabaudi) identified from prior RNA Seq data, and that of CIR subfamilies. Robust localisation may shed light on the potential PIR functions that have been hypothesized. A twofold approach was taken, generating transgenic parasite lines expressing epitope-tagged candidate CIRs, and designing peptide motifs characteristic of CIR subfamilies which were used to produce anti-CIR antisera. Candidate CIRs were also expressed as recombinant proteins for use in assays in this and future projects. Peptides conserved in the two major CIR subfamilies were designed and synthesized. Antisera were generated and tested against recombinant CIR proteins and whole parasite lysates. Although there was some cross-reactivity, two antisera successfully recognized their target subfamily. Immunofluorescence assays with these antisera showed the two subfamilies have different localisations. Parasite lines expressing tagged candidate CIRs from three different subfamilies were successfully generated and characterised. These showed each CIR has a different pattern of localisation across the asexual lifecycle stages, verified when probed with the anti-CIR antisera. This provides further evidence for the differential localisation of PIRs, and the hypothesis that the superfamily may have multiple functions.
title: Journal of Historical Network Research, Vol. 7 No. 1 (2022): Regular Issue
title: Regular Issue
titleType: AlternativeTitle
Creators: name: Journal Of Historical Network Research
Publisher: name: Journal of Historical Network Research
Year: 2023

description: Bewegungsnetze am Werk: Der Bauern- und Arbeiterbund Baselland und seine Netzwerke...216-253
An Empire of Networks: The Political Economy of the Habsburgs in the Caribbean (1492–1556)...181-215
Lindian Chronicle Connections: Contrasting Rhodian Networks Real and Imagined...155-180
Tracking the Evolution of Communities in a Social Network of Intellectual Influences...114-154
Visualizing the Evolution of Historical Networks Using Small Multiples in Grid Charts...86–113
Recreating the Network of Early Modern Natural Philosophy: A Mono- and Multilingual Text Data Vectorization Method...33-85
Studying Professional Careers as Hierarchical Networks: A Case Study on the Careers of Chief Judges in the Ottoman Empire (1516–1622)...1-32
Broadband ferromagnetic resonance in Mn-doped Li ferrite nanoparticles
Creators: name: Hernandez-Gomez, P.
name: Muñoz, J. M.
name: Valente, M. A.
name: Graça, M. P. F.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Lithium ferrites are well known materials due to their numerous technological applications especially in microwave devices. Mn-doped lithium ferrite nanoparticles were prepared by sol-gel technique by means of Pechini method, and then annealed at different temperatures in 250 to 1000 °C range. XRD confirms spinel formation with particle size in the 15 to 200 nm range, with increased size with annealing temperature. Microwave magnetoabsorption data of annealed lithium ferrite nanoparticles, obtained with a broadband system based on a network analyzer operating up to 8.5 GHz are presented. At fields up to 200 mT we can observe a broad absorption peak that shifts to higher frequencies with magnetic field according to ferromagnetic resonance theory. The amplitude of absorption, up to 85%, together with the frequency width of about 4.5 GHz makes this material suitable as wave absorber. Samples annealed at higher temperatures show a behaviour similar to polycrystalline samples, thus suggesting their multidomain character
Theoretical aspects of the inverse Tully-Fisher relation as a distance indicator: incompleteness in log(V_Max), the relevant slope, and the calibrator sample bias
Creators: name: Teerikorpi, P.
name: Ekholm, T.
name: Hanski, M. O.
name: Theureau, G.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the influence of the assumption behind the use of the inverse Tully-Fisher relation: that there should be no observational cutoffs in the TF parameter log(V_M). It is noted how lower and upper cutoffs would be seen in a log(H_0) vs. ``normalized distance'' diagram. Analytical expressions, under the simplifying assumption of a normal distribution and the use of the correct TF slope, are derived for the resulting biases, especially the average bias which log(V_M) cutoffs produce in the derived value of H_0. This bias is shown to be relatively weak, and as such cannot explain the large differences in the reported values of H_0 derived from direct and inverse TF relations. Some problems of slope and calibration are shown to be more serious. In particular, one consequence of fitting through the calibrators either the slope relevant for field galaxies or the steeper slope followed by calibrators is that the derived value of the Hubble constant comes to depend on the nature of the calibrator sample. If the calibrator sample is not representative of the cosmic distribution of log(V_M), large errors in the derived value of H_0 are possible. Analytical expressions are given for this error that we term the calibrator sample bias.
description: A&A in press
Propagating wave in the flock of self-propelled particles
Creators: name: Ngamsaad, Waipot
name: Suantai, Suthep
Publisher: name: arXiv
Year: 2018
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We investigate the linearized hydrodynamic equations of interacting self-propelled particles in two dimensional space. It is found that the small perturbations of density and polarization fields satisfy the hyperbolic partial differential equations---that admit analytical propagating wave solutions. These solutions uncover the questionable traveling band formation in the flocking state of self-propelled particles. Below the critical noise strength, an unstable disordered state (random motion) undergoes a transient vortex and evolves to an ordered state (flocking motion) as unidirectional traveling waves. There appear two possible longitudinal wave patterns depending on the noise strength, including single band in stable state and multiplebands in unstable state. A comparison of theoretical and experimental studies is presented.
description: 6 pages, Accepted for publication in Physical Review E
Maintien de la paix de l’ONU avec participation hongroise: Namibie
Creators: name: János, Besenyő
Publisher: name: figshare
Year: 2018
Subjects: subject: Sociology
subject: FOS: Sociology

description: Au cours des dernières années les specialistes du maintien de la paix et des gens qui ne sont pas du métier peuvent obtenir des informations sur les operations policières et militaires de maintien de paix de la Republique de Hongrie en afrique.Pourtant, il y a quand même des évenements dont on ne s’occupe pratiquement pas ou peu. Dans l’article suivant nous traiterons la Namibie, du rôle des opérations policières hongroises dans ce pays.
Ring formation in a statistical associating fluid theory framework
Creators: name: Febra, Sara
Publisher: name: Imperial College London
Year: 2018

description: Hydrogen bonds (HB) form, most commonly, between independent molecules (intermolecular HB), leading to the formation of linear or branched chain-like networks, which can extend in open form and can include ring-like networks (closed loops). In addition, hydrogen bonds may involve atoms in different parts of the same molecule (intramolecular HB), on occasion leading to bent X-H...X conformations in smaller molecules (e.g., Schiff bases) where strong steric conditions apply, or from within large macromolecules (polymers [1,2,3,4,5] and proteins [6,7,8]) with little constraint from the covalent bonds otherwise binding the atoms. The formation of HB leads to long-lived molecular aggregates and the macroscopic manifestation of these two types of HB bond can be rather different and striking [9, 10, 11, 12, 13]. The direct result of the formation of hydrogen bonds is the decrease in the availability of the donor/acceptor sites of the chemical groups involved to associate. In the development of equations of state (EOSs) based on Wertheim’s thermodynamic perturbation theory (TPT), including the statistical associating fluid theory (SAFT), the formation of any ring clusters, that are formed by inter- or intramolecular hydrogen bonding, is typically neglected. As a consequence, the applicability of SAFT-like EOSs is limited to systems where the anomalies arising from ring formation are insignificant. Previous attempts to extend the TPT formalism to account for rings have not provided all the answers. The issue is addressed here whereby the TPT treatment is extended to account for ring formation, under the approximation that the appropriate many-body distribution function of the ring aggregate can be expressed as a power of a (pair) radial distribution function in a homogeneous fluid. The theory developed in this thesis constitutes an improvement to the existing theories of association in that it can be used to account for the competition between free monomers, linear-chain, branched-chain, inter- and intramolecular ring aggregates by hydrogen bonding. The theory requires as input the size of rings formed and one extra parameter per ring type to capture the probability associated with the two sites in a chain molecule/aggregate meeting each other. The resulting generic framework is applicable to mixtures with an arbitrary number of association sites and ring types. The newly developed treatment is then compared to the standard framework for reference, to examine the impact of ring formation on the phase equilibria of model systems and to model the solubility of ring-forming statins in simple alcohols. The formation of both inter- and intramolecular rings is favoured by the increase of the association energy, low temperature and low density. For fixed parameters, the formation of rings may result in either the enhancement or the decrease of the solubility of statins, depending on the nature of the solvent.
Late-type dwarf irregular galaxies in the Virgo cluster.I. H-alpha and red continuum data
Creators: name: Heller, Ana
name: Almoznino, Elchanan
name: Brosch, Noah
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present H-alpha and red continuum observations for a sample of late-type low surface brightness (LSB) dwarf irregular galaxies(DIGs), consisting of all the m_B<17.2 ImIV and V galaxies in the Virgo cluster (VC), and compare them with a representative sample of VC high surface brightness (HSB) DIGs. Line fluxes and equivalent widths are listed for individual HII regions and total H-alpha emission is measured for the entire DIG. The HII regions we identified do not produce all the line emission. For LSBs with line emission we find star formation rates (SFR) of 6.9-43.0 10^{-3} M_sol/yr, ~10x weaker than for HSB objects. About 2 HII regions are detected per LSB galaxy; they are smaller and fainter than in HSB galaxies in the VC, have line equivalent widths ~50% of those in HSBs, and cover similar fractions of the galaxies. The line-emitting regions of LSB galaxies are preferentially located at the periphery of a galaxy, while in HSBs they tend to be central. The line strength of an HII region is correlated with the red continuum light underneath the region. No fundamental differences were identified in the star formation properties of the LSB and HSB dwarf galaxies we studied and infer that these galaxies must be similar, with the difference being the intensity of the present star-formation burst.
description: Accepted for publication in the MNRAS. 44 pages, 15 figures
Sturnus vulgaris Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Passeriformes
Sturnidae
Sturnus
Sturnus vulgaris

description: Sturnus vulgaris [spec. nov.]
S. rostro flavescente, corpore nigro punctis albis. Fn. svec. 183.
Sturnus. Gesn. av. 747. Bell. av. 81. a. Aldr. orn. l. 16. c. 19. Will. orn. 144. t. 37. Raj. av. 67. n. 1. Alb. av. 1. p. 38. t. 40. Olin. av. 18. Hasselqv. itin. 284.
Habitat in Europa, Africa, victitans insectis. Nidisicat in cavis arborum; migrat in Scaniam; garrula imitatrix; Mas nitens; gregaria avis.
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 167, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Energy dependent chemical potentials of light particles and quarks from yield ratios of antiparticles to particles in high energy collisions
Creators: name: Lao, Hai-Ling
name: Gao, Ya-Qin
name: Liu, Fu-Hu
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We collect the yields of charged pions ($π^-$ and $π^+$), charged kaons ($K^-$ and $K^+$), anti-protons ($\bar p$), and protons ($p$) produced in mid-rapidity interval (in most cases) in central gold-gold (Au-Au), central lead-lead (Pb-Pb), and inelastic or non-single-diffractive proton-proton ($pp$) collisions at different collision energies. The chemical potentials of light particles and quarks are extracted from the yield ratios, $π^-/π^+$, $K^-/K^+$, and $\bar p/p$, of antiparticles to particles over an energy range from a few GeV to above 10 TeV. At a few GeV ($\sim4$ GeV), the chemical potentials show, and the yield ratios do not show, different trends comparing with those at other energies, though the limiting values of the chemical potentials and the yield ratios at very high energy are 0 and 1 respectively.
description: 10 pages, 3 figures. Universe, accepted
Global analysis of human genetic variations in protein-coding regions
Creators: name: Alhuzimi, Eman
Publisher: name: Imperial College London
Year: 2018

description: Do genes enriched in genetic variations that have been linked to human disease have different biological properties than genes enriched in variants that have never been related to disease? What are the characteristics of genes enriched in rare variants, and can they represent the missing link in disease aetiology? The answers to these questions could shed light on the architecture of pathogenesis process and may improve the future studies of genetic disorders. To that end, we analysed 481,277 rare variants (minor allele frequency <0.01), 81,822 common variants (minor allele frequency ≥0.01), and 26,884 disease-causing variants occurring in the coding region of 17,975 human protein-coding genes. Three novel sets of genes were identified: genes enriched in rare variants (32 genes), genes enriched in common variants (282 genes), and genes enriched in disease-causing variants (800 genes). Our analysis presented consistent results obtained from several well-established tools which showed that genes enriched in rare variants have far greater similarities in the biological and network properties to genes enriched in disease-causing variants, than to genes enriched in common variants. Thus, genetic variants in these genes are strong candidates for disease, and their identification should prompt further in vitro analyses as they may represent the missing link in disease heritability. All the data used in the analysis in addition to other biological data will be publicly available through the development of a dedicated database and website. We expect the website to become the foundation for understanding the molecular details of the different types of genetic variants, which in turn will be of a great benefit to the medical community.
3D Simulation of the Gas Dynamics in the Central Parsec of the Galaxy
Creators: name: Coker, R.
name: Melia, F.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It is thought that many characteristics of the gaseous features within the central parsec of our Galaxy, are associated with the accretion of ambient plasma by a central concentration of mass. Using a 3D hydrodynamical code, we have been simulating this process in order to realistically model the gaseous flows in the center of our Galaxy. In the most recent simulation, we have taken into account the multi-point-like distribution of stellar wind sources, as well as the magnetic heating and radiative cooling of these stellar winds. As expected, we find that the structure of the flow is significantly different from that due to a uniform medium. We also investigate the possibility that Sgr A* is due to a distributed mass concentration instead of the canonical point mass of a black hole. We discuss the physical state of the accreting gas and how our results suggest that Sgr A* is unlikely to be associated with a ``dark cluster''.
description: 10 pages, 3 figures, GC98 conference proceedings, uses paspconf.sty
A Spatiotemporal Illumination Model for 3D Image Fusion in Optical Coherence Tomography
Creators: name: Ploner, Stefan
name: Won, Jungeun
name: Schottenhamml, Julia
name: Girgis, Jessica
name: Lam, Kenneth
name: Waheed, Nadia
name: Fujimoto, James
name: Maier, Andreas
Publisher: name: arXiv
Year: 2024
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Optical coherence tomography (OCT) is a non-invasive, micrometer-scale imaging modality that has become a clinical standard in ophthalmology. By raster-scanning the retina, sequential cross-sectional image slices are acquired to generate volumetric data. In-vivo imaging suffers from discontinuities between slices that show up as motion and illumination artifacts. We present a new illumination model that exploits continuity in orthogonally raster-scanned volume data. Our novel spatiotemporal parametrization adheres to illumination continuity both temporally, along the imaged slices, as well as spatially, in the transverse directions. Yet, our formulation does not make inter-slice assumptions, which could have discontinuities. This is the first optimization of a 3D inverse model in an image reconstruction context in OCT. Evaluation in 68 volumes from eyes with pathology showed reduction of illumination artifacts in 88\% of the data, and only 6\% showed moderate residual illumination artifacts. The method enables the use of forward-warped motion corrected data, which is more accurate, and enables supersampling and advanced 3D image reconstruction in OCT.
description: Presented orally & as poster on 20th April 2023 at the IEEE International Symposium on Biomedical Imaging (ISBI) in Cartagena, Colombia. 6 pages, 3 figures. You can find the official version with broken equations and bad contrast figures under https://ieeexplore.ieee.org/document/10230526
The Power Spectrum of Matter
Creators: name: Einasto, J.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We calculate the mean power spectrum of galaxies using published power spectra of galaxies and clusters of galaxies. The mean power spectrum has a relatively sharp maximum on scale 120 Mpc (for Hubble constant h=1), followed by an almost exact power-law spectrum of index n = -1.9 toward smaller scales. The power spectrum found from APM 2-D galaxy distribution and from LCRS and IRAS 1.2 Jy surveys is flatter around the maximum. Power spectra of galaxies and matter are similar in shape, we find the bias parameter of galaxies relative to matter 1.3 + - 0.1. We compare the empirical power spectrum of matter with analytical power spectra and show that the primordial power spectrum has a break in amplitude and a spike.
description: LaTex (sty files added), 5 pages, 4 PostScript figures embedded, Proceedings: Evolution of Large Scale Structure, Garching, August 1998
Form factors for semileptonic $B_{c}$ decays into $η^{(')}$ and Glueball
Creators: name: Zhu, Ruilin
name: Ma, Yan
name: Han, Xin-Ling
name: Xiao, Zhen-Jun
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: We calculated the form factors of $B_{c}$ transitions into $η^{(')}$ meson and pseudoscalar Glueball, where the $B_{c}$ meson is a bound state of two different heavy flavors and is treated as a nonrelativistic state, while the mesons $η^{(')}$ and Glueball are treated as light-cone objects since their masses are smaller enough compared to the transition momentum scale. The mechanism of two gluon scattering into $η^{(')}$ dominated the form factors of $B_{c}$ decays into $η^{(')}$. We considered the $η-η'-$Glueball mixing effect, and then obtained their influences on the form factors. The form factors of $B_{c}$ transitions into $η^{(')}$ and pseudoscalar Glueball in the maximum momentum recoil point were obtained as follows: $f^η_{0,+}(q^2=0)=1.38^{+0.00}_{-0.02}\times 10^{-3}$,$f^{η'}_{0,+}(q^2=0)=0.89^{+0.11}_{-0.10}\times 10^{-2}$ and $f^{G}_{0,+}(q^2=0)=0.44^{+0.13}_{-0.05}\times 10^{-2}$. Also phenomenological discussions for semileptonic $B_{c}\toη^{(')}+\ell+\barν_\ell$, $B_{c}\to G(0^{-+})+\ell+\barν_\ell$ and $D_{s}\to η+\ell+\barν_\ell$ decays are given.
description: 11 pages, 8 figures, and 5 tables
Unravelling the role of a eukaryote-like serine/threonine kinase in how escherichia coli adapts to sustained nitrogen starvation
Creators: name: Switzer, Amy
Publisher: name: Imperial College London
Year: 2018

description: Nitrogen is an essential component of the bacterial cell, thus rapid adaptation to nitrogen starvation is essential for survival. In Escherichia coli and related bacteria the response to nitrogen starvation is initially coordinated by transcriptional reprogramming, and occurs through signalling from the NtrBC two component system, where NtrC is the master transcriptional regulator required for σ54-dependent transcription. This NtrC-coordinated response has been extensively studied and is initially required for “scavenging” of alternative nitrogen sources. The yeaGH operon is one of the most highly upregulated and only uncharacterised operon expressed in an NtrC-dependent manner upon nitrogen starvation. Previous work in the laboratory revealed that the eukaryote-like serine/threonine kinase, YeaG, is required by E. coli to cope with sustained nitrogen starvation. However, the molecular basis by which YeaG achieves this remains elusive. The main objective of the work presented here was to expand on how YeaG contributes to adaptation to sustained nitrogen starvation by using a transcriptomics based approach. Results revealed that YeaG is required throughout nitrogen starvation for repression of two energetically costly pathways, flagellar and methionine biosynthesis, in a temporal manner. Understanding how YeaG affects temporal transcriptome dynamics inspired further research into how the transcriptome is affected during adaptation to sustained nitrogen starvation. Utilising global transcriptome studies, two genes, abgR and yedL, were identified to contribute towards maintenance of viability during sustained nitrogen starvation, and revealed new avenues for investigation of temporal transcriptional adaptation to stress. Overall, this study suggests that adaptation to sustained nitrogen starvation is likely dynamic, and is required for optimal adaptation and maintenance of survival, whilst being prepared to resume growth once nitrogen becomes available. YeaG is required in this adaptive process to act as a temporal metabolic brake in repressing energetically costly pathways, required for survival.