cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Non-standard neutrino interactions in the Earth and the flavor of astrophysical neutrinos
Creators: name: Gonzalez-Garcia, M. C.
name: Maltoni, Michele
name: Martinez-Soler, Ivan
name: Song, Ningqiang
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study the modification of the detected flavor content of ultra high-energy astrophysical neutrinos in the presence of non-standard interactions of neutrinos with the Earth matter. Unlike the case of new physics affecting the propagation from the source to the Earth, non-standard Earth matter effects induce a dependence of the flavor content on the arrival direction of the neutrino. We find that, within the current limits on non-standard neutrino interaction parameters, large deviations from the standard 3-nu oscillation predictions can be expected, in particular for fluxes dominated by one flavor at the source. Conversely they do not give sizable corrections to the expectation of equalized flavors in the Earth for sources dominated by production via pion-muon decay-chain.
description: 12 pages, 6 figures
Asymptotic solvers for ordinary differential equations with multiple frequencies
Creators: name: Condon, Marissa
name: Deano, Alfredo
name: Gao, Jing
name: Iserles, Arieh
Publisher: name: arXiv
Year: 2015
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65L05, 65D30, 42B20, 42A10

description: We construct asymptotic expansions for ordinary differential equations with highly oscillatory forcing terms, focussing on the case of multiple, non-commensurate frequencies. We derive an asymptotic expansion in inverse powers of the oscillatory parameter and use its truncation as an exceedingly effective means to discretize the differential equation in question. Numerical examples illustrate the effectiveness of the method.
description: This paper has been accepted for publication in SCIENCE CHINA Mathematics
UKCP09 gridded observation data sets frequently asked questions
Creators: name: Unknown
Publisher: name: Zenodo
Year: 2017
Subjects: subject: https://id.loc.gov/authorities/subjects/sh2018002590.html
subject: https://id.loc.gov/authorities/subjects/sh85084334.html
subject: https://id.loc.gov/authorities/subjects/sh85101653.html

description: UKCP09 gridded observation data sets frequently asked questions
description: Previously curated at: http://cedadocs.ceda.ac.uk/1323/ This item was not refereed before the publication Main files in this record: UKCP09 gridded observation data sets frequently asked questions.pdf Item originally deposited with Centre for Environmental Data Analysis (CEDA) document repository by Miss Kate Winfield. Transferred to CEDA document repository community on Zenodo on 2022-11-24
3D tracking the Brownian motion of colloidal particles using digital holographic microscopy and joint reconstruction
Creators: name: Verrier, Nicolas
name: Fournier, Corinne
name: Fournel, Thierry
Publisher: name: arXiv
Year: 2015
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In-line digital holography is a valuable tool for sizing, locating and tracking micro- or nano-objects in a volume. When a parametric imaging model is available, Inverse Problems approaches provide a straightforward estimate of the object parameters by fitting data with the model, thereby allowing accurate reconstruction. As recently proposed and demonstrated, combining pixel super-resolution techniques with Inverse Problems approaches improves the estimation of particle size and 3D-position. Here we demonstrate the accurate tracking of colloidal particles in Brownian motion. Particle size and 3D-position are jointly optimized from video holograms acquired with a digital holographic microscopy set up based on a "low-end" microscope objective ($\times 20$, $\rm NA\ 0.5$). Exploiting information redundancy makes it possible to characterize particles with a standard deviation of 15 nm in size and a theoretical resolution of 2 x 2 x 5 nm$^3$ for position under additive white Gaussian noise assumption.
Sun-tracking optical element realized using thermally activated transparency-switching material
Creators: name: Apostoleris, Harry
name: Stefancich, Marco
name: Lilliu, Samuele
name: Chiesa, Matteo
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a proof of concept demonstration of a novel optical element: a light-responsive aperture that can track a moving light beam. The element is created using a thermally-activated transparency-switching material composed of paraffin wax and polydimethylsiloxane (PDMS). Illumination of the material with a focused beam causes the formation of a localized transparency at the focal spot location, due to local heating caused by absorption of a portion of the incident light. An application is proposed in a new design for a self-tracking solar collector.
description: 6 pages, 5 figures
UKCP09 Storm projections
Creators: name: Ferguson, Stephanie
Publisher: name: Zenodo
Year: 2010
Subjects: subject: https://id.loc.gov/authorities/subjects/sh2018002590.html
subject: https://id.loc.gov/authorities/subjects/sh85084334.html

description: The following text summarizes the information available on storms in UKCIP02, UKCP09 and selected other sources. It must be emphasized that different publications can define storms differently and so readers must be clear how a storm is being defined within the resource they are reading. The following text regarding UKCIP02 and UKCP09 is not referring to thunderstorms or convective activity, nor is it looking at storm surges. In terms of timescales, it is referring to storm activity up to the end of the 21st century.
description: Previously curated at: http://cedadocs.ceda.ac.uk/1325/ The publish date on this item was its original published date. Main files in this record: tech_note_on_storm_projections.pdf Item originally deposited with Centre for Environmental Data Analysis (CEDA) document repository by Miss Kate Winfield. Transferred to CEDA document repository community on Zenodo on 2022-11-24
Ambrosia maritima Linnaeus 1753
Creators: name: Jarvis, Charlie
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Ambrosia
Ambrosia maritima

description: Ambrosia maritima Linnaeus, Species Plantarum 2: 988. 1753. "Habitat in Hetruriae, Cappadociae maritimis arenosis." RCN: 7160. Lectotype (Alavi in Jafri & El-Gadi, Fl. Libya 107: 120. 1983): Herb. Clifford: 443, Ambrosia 1 (BM-000647392). Generitype of Ambrosia Linnaeus (vide Green, Prop. Brit. Bot.: 188. 1929). Current name:  Ambrosia maritima L. (Asteraceae).
description: Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part A), pp. 252-342 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 286, DOI: 10.5281/zenodo.291971
Dynamics of a small planetoid in Newtonian gravity field of Lagrangian configuration of three primaries
Creators: name: Ershkov, Sergey V.
name: Leshchenko, Dmytro
name: Rachinskaya, Alla
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences
subject: 70F15, 70F07

description: Novel method for semi-analytical solving of equations of a trapped dynamics for a planetoid m4 close to the plane of mutual motion of main bodies around each other (in case of a special type of Bi-Elliptic Restricted 4-Bodies Problem) is presented. We consider here three primaries m1, m2, m3 orbiting around their center of mass on elliptic orbits which are permanently forming Lagrangian configuration of an equilateral triangle. Our aim is to obtain appoximate coordinates of quasi planar trajectory of the infinitesimal planetoid m4, when the primaries have masses equal to 1/3. Results are as follows: 1) equations for coordinates {x, y} are described by system of coupled 2-nd order ordinary differential equations with respect to true anomaly f, 2) expression for z stems from solving second order Riccati ordinary differential equation that determines the quasi-periodical oscillations of planetoid m4 not far from invariant plane {x, y, 0}.
description: 17 pages, 7 figures; Keywords: Bi-elliptic Restricted Problem of Four Bodies, trapped dynamics of planetoid, BiER4BP, Lagrangian configuration of equilateral triangle, Riccati ODE
Ambrosia trifida Linnaeus 1753
Creators: name: Jarvis, Charlie
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Ambrosia
Ambrosia trifida

description: Ambrosia trifida Linnaeus, Species Plantarum 2: 987. 1753. "Habitat in Virginia, Canada." RCN: 7157. Lectotype (Reveal in Jarvis & Turland in Taxon 47: 351. 1998): Herb. Linn. No. 1114.1 (LINN). Current name:  Ambrosia trifida L. (Asteraceae).
description: Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part A), pp. 252-342 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 286, DOI: 10.5281/zenodo.291971
Emergent collective chemotaxis without single-cell gradient sensing
Creators: name: Camley, Brian A.
name: Zimmermann, Juliane
name: Levine, Herbert
name: Rappel, Wouter-Jan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Cell Behavior (q-bio.CB)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Many eukaryotic cells chemotax, sensing and following chemical gradients. However, experiments have shown that even under conditions when single cells cannot chemotax, small clusters may still follow a gradient. This behavior has been observed in neural crest cells, in lymphocytes, and during border cell migration in Drosophila, but its origin remains puzzling. Here, we propose a new mechanism underlying this "collective guidance", and study a model based on this mechanism both analytically and computationally. Our approach posits that the contact inhibition of locomotion (CIL), where cells polarize away from cell-cell contact, is regulated by the chemoattractant. Individual cells must measure the mean attractant value, but need not measure its gradient, to give rise to directional motility for a cell cluster. We present analytic formulas for how cluster velocity and chemotactic index depend on the number and organization of cells in the cluster. The presence of strong orientation effects provides a simple test for our theory of collective guidance.
description: Updated with additional simulations. Aspects of v1 of this paper about adaptation and amplification have been extended and turned into a separate paper, and removed from the current version
Hunting for Dark Matter Coannihilation by Mixing Dijet Resonances and Missing Transverse Energy
Creators: name: Buschmann, Malte
name: Hedri, Sonia El
name: Kaminska, Anna
name: Liu, Jia
name: de Vries, Maikel
name: Wang, Xiao-Ping
name: Yu, Felix
name: Zurita, Jose
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Simplified models of the dark matter (co)annihilation mechanism predict striking new collider signatures untested by current searches. These models, which were codified in the coannihilation codex, provide the basis for a dark matter (DM) discovery program at the Large Hadron Collider (LHC) driven by the measured DM relic density. In this work, we study an exemplary model featuring $s$-channel DM coannihilation through a scalar diquark mediator as a representative case study of scenarios with strongly interacting coannihilation partners. We discuss the full phenomenology of the model, ranging from low energy flavor constraints, vacuum stability requirements, and precision Higgs effects to direct detection and indirect detection prospects. Moreover, motivated by the relic density calculation, we find significant portions of parameter space are compatible with current collider constraints and can be probed by future searches, including a proposed analysis for the novel signature of a dijet resonance accompanied by missing transverse energy (MET). Our results show that the $13$ TeV LHC with $100~\mathrm{fb}^{-1}$ luminosity should be sensitive to mediators as heavy as 1 TeV and dark matter in the 400--500 GeV range. The combination of searches for single and paired dijet peaks, non-resonant jets + MET excesses, and our novel resonant dijet + MET signature have strong coverage of the motivated relic density region, reflecting the tight connections between particles determining the dark matter abundance and their experimental signatures at the LHC.
description: 35 pages, 9 figures
Fundamental Green Tradeoffs: Progresses, Challenges, and Impacts on 5G Networks
Creators: name: Zhang, Shunqing
name: Wu, Qingqing
name: Xu, Shugong
name: Li, Geoffrey Ye
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: With years of tremendous traffic and energy consumption growth, green radio has been valued not only for theoretical research interests but also for the operational expenditure reduction and the sustainable development of wireless communications. Fundamental green tradeoffs, served as an important framework for analysis, include four basic relationships: spectrum efficiency (SE) versus energy efficiency (EE), deployment efficiency (DE) versus energy efficiency (EE), delay (DL) versus power (PW), and bandwidth (BW) versus power (PW). In this paper, we first provide a comprehensive overview on the extensive on-going research efforts and categorize them based on the fundamental green tradeoffs. We will then focus on research progresses of 4G and 5G communications, such as orthogonal frequency division multiplexing (OFDM) and non-orthogonal aggregation (NOA), multiple input multiple output (MIMO), and heterogeneous networks (HetNets). We will also discuss potential challenges and impacts of fundamental green tradeoffs, to shed some light on the energy efficient research and design for future wireless networks.
description: revised from IEEE Communications Surveys & Tutorials
Amellus asteroides Druce
Creators: name: Jarvis, Charlie
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Amellus
Amellus asteroides

description: Amellus lychnitis Linnaeus, Systema Naturae, ed. 10, 2: 1225. 1759, typ. cons. ["Habitat ad Cap. b. spei."] Sp. Pl. ed. 2, 2: 1276. 1763. RCN: 6511. Type not designated. Original material: Herb. Linn. No. 1023.1 (LINN). Generitype of Amellus Linnaeus, nom. cons. Current name:  Amellus asteroides (L.) Druce (Asteraceae). Note: Amellus Linnaeus, nom. cons. against Amellus P. Browne.
description: Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part A), pp. 252-342 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 286, DOI: 10.5281/zenodo.291971
The model of neutrino vacuum flavour oscillations and quantum mechanics
Creators: name: Goryachev, Boris I.
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Physics (physics.gen-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is shown that the model of vacuum flavour oscillations is in disagreement with quantum mechanics theorems and postulates. Features of the model are analyzed. It is noted that apart from the number of mixed mass states neutrino oscillations are forbidden by Fock-Krylov theorem. A possible reason of oscillation model inadequacy is discussed.
description: 12 pages
A note on the anomalous magnetic moment of the muon
Creators: name: Palle, Davor
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The anomalous magnetic moment of the muon is an important observable that tests radiative corrections of all three observed local gauge forces: electromagnetic, weak and strong interactions. High precision measurements reveal some discrepancy with the most accurate theoretical evaluations of the anomalous magnetic moment. We show in this note that the UV finite theory cannot resolve this discrepancy. We believe that more reliable estimate of the nonperturbative hadronic contribution and the new measurements can resolve the problem.
description: 9 pages, 1 figure; to appear in Acta Phys. Pol. B (2016)
Performance Comparison Analysis of ArangoDB, MySQL, and Neo4j: An Experimental Study of Querying Connected Data
Creators: name: Sandell, Johan
name: Asplund, Einar
name: Ayele, Workneh Yilma
name: Duneld, Martin
Publisher: name: arXiv
Year: 2024
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Choosing and developing performant database solutions helps organizations optimize their operational practices and decision-making. Since graph data is becoming more common, it is crucial to develop and use them in big data with complex relationships with high and consistent performance. However, legacy database technologies such as MySQL are tailored to store relational databases and need to perform more complex queries to retrieve graph data. Previous research has dealt with performance aspects such as CPU and memory usage. In contrast, energy usage and temperature of the servers are lacking. Thus, this paper evaluates and compares state-of-the-art graphs and relational databases from the performance aspects to allow a more informed selection of technologies. Graph-based big data applications benefit from informed selection database technologies for data retrieval and analytics problems. The results show that Neo4j performs faster in querying connected data than MySQL and ArangoDB, and energy, CPU, and memory usage performances are reported in this paper.
description: https://hdl.handle.net/10125/107319
Few-photon imaging at 1550 nm using a low-timing-jitter superconducting nanowire single-photon detector
Creators: name: Zhou, H.
name: He, Y.
name: You, L.
name: Chen, S.
name: Zhang, W.
name: Wu, J.
name: Wang, Z.
name: Xie, X.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: Superconductivity (cond-mat.supr-con)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We demonstrated a laser depth imaging system based on the time-correlated single-photon counting technique, which was incorporated with a low-jitter superconducting nanowire single-photon detector (SNSPD), operated at the wavelength of 1550 nm. A sub-picosecond time-bin width was chosen for photon counting, resulting in a discrete noise of less than one/two counts for each time bin under indoor/outdoor daylight conditions, with a collection time of 50 ms. Because of the low-jitter SNSPD, the target signal histogram was significantly distinguishable, even for a fairly low retro-reflected photon flux. The depth information was determined directly by the highest bin counts, instead of using any data fitting combined with complex algorithms. Millimeter resolution depth imaging of a low-signature object was obtained, and more accurate data than that produced by the traditional Gaussian fitting method was generated. Combined with the intensity of the return photons, three-dimensional reconstruction overlaid with reflectivity data was realized.
description: 7 pages, 9 figures
Implementation of the Met Office global model upgrade at PS39
Creators: name: Tennant, Warren
name: Walters, David
Publisher: name: Zenodo
Year: 2017
Subjects: subject: https://id.loc.gov/authorities/subjects/sh2018002590.html

description: This document is taken from the Met Office Numerical Weather Prediction (NWP) Wiki. It describes some of the technical changes included in the global upgrade at PS39.
description: Previously curated at: http://cedadocs.ceda.ac.uk/1327/ This item was not refereed before the publication Main files in this record: GlobalOPCHANGE.pdf Item originally deposited with Centre for Environmental Data Analysis (CEDA) document repository by Miss Kate Winfield. Transferred to CEDA document repository community on Zenodo on 2022-11-24
Liabum umbellatum Sch. Bip.
Creators: name: Jarvis, Charlie
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Liabum
Liabum umbellatum

description: Amellus umbellatus Linnaeus, Systema Naturae, ed. 10, 2: 1225. 1759. ["Habitat in Jamaica."] Sp. Pl. ed. 2, 2: 1276. 1763. RCN: 6512. Lectotype (Moore in Fawcett & Rendle, Fl. Jamaica 7: 267. 1936): Herb. Linn. No. 1023.3 (LINN). Current name:  Liabum umbellatum (L.) Sch. Bip. (Asteraceae).
description: Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part A), pp. 252-342 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 286, DOI: 10.5281/zenodo.291971
Large-sensitive-area superconducting nanowire single-photon detector at 850 nm with high detection efficiency
Creators: name: Li, Hao
name: Zhang, Lu
name: You, Lixing
name: Yang, Xiaoyan
name: Zhang, Weijun
name: Liu, Xiaoyu
name: Chen, Sijing
name: Wang, Zhen
name: Xie, Xiaoming
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: Superconductivity (cond-mat.supr-con)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Satellite-ground quantum communication requires single-photon detectors of 850-nm wavelength with both high detection efficiency and large sensitive area. We developed superconducting nanowire single-photon detectors (SNSPDs) on one-dimensional photonic crystals, which acted as optical cavities to enhance the optical absorption, with a sensitive-area diameter of 50 um. The fabricated multimode fiber coupled NbN SNSPDs exhibited a maximum system detection efficiency (DE) of up to 82% and a DE of 78% at a dark count rate of 100 Hz at 850-nm wavelength as well as a system jitter of 105 ps.
description: 8 pages, 4 figures
The Sloan Digital Sky Survey Reverberation Mapping Project: Biases in z>1.46 Redshifts due to Quasar Diversity
Creators: name: Denney, K. D.
name: Horne, Keith
name: Brandt, W. N.
name: Grier, C. J.
name: Ho, Luis C.
name: Peterson, B. M.
name: Trump, J. R.
name: Ge, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We use the coadded spectra of 32 epochs of Sloan Digital Sky Survey (SDSS) Reverberation Mapping Project observations of 482 quasars with z>1.46 to highlight systematic biases in the SDSS- and BOSS-pipeline redshifts due to the natural diversity of quasar properties. We investigate the characteristics of this bias by comparing the BOSS-pipeline redshifts to an estimate from the centroid of HeII 1640. HeII has a low equivalent width but is often well-defined in high-S/N spectra, does not suffer from self-absorption, and has a narrow component that, when present (the case for about half of our sources), produces a redshift estimate that, on average, is consistent with that determined from [OII] to within 1-sigma of the quadrature sum of the HeII and [OII] centroid measurement uncertainties. The large redshift differences of ~1000 km/s, on average, between the BOSS-pipeline and HeII-centroid redshifts suggest there are significant biases in a portion of BOSS quasar redshift measurements. Adopting the HeII-based redshifts shows that CIV does not exhibit a ubiquitous blueshift for all quasars, given the precision probed by our measurements. Instead, we find a distribution of CIV centroid blueshifts across our sample, with a dynamic range that (i) is wider than that previously reported for this line, and (ii) spans CIV centroids from those consistent with the systemic redshift to those with significant blueshifts of thousands of kilometers per second. These results have significant implications for measurement and use of high-redshift quasar properties and redshifts and studies based thereon.
description: 13 pages, 7 figures, submitted to ApJ
Normalisers of abelian ideals of a Borel subalgebra and $\mathbb Z$-gradings of a simple Lie algebra
Creators: name: Panyushev, Dmitri I.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 17B20, 17B22, 20F55

description: Let $\mathfrak g$ be a simple Lie algebra and $\mathfrak{Ab}$ the poset of all abelian ideals of a fixed Borel subalgebra of $\mathfrak g$. If $\mathfrak a\in\mathfrak{Ab}$, then the normaliser of $\mathfrak a$ is a standard parabolic subalgebra of $\mathfrak g$. We give an explicit description of the normaliser for a class of abelian ideals that includes all maximal abelian ideals. We also elaborate on a relationship between abelian ideals and $\mathbb Z$-gradings of $\mathfrak g$ associated with their normalisers.
description: 13 pp
Efficiency of dispersive wave generation in dual concentric core microstructured fiber
Creators: name: Modotto, Daniele
name: Andreana, Marco
name: Krupa, Katarzyna
name: Manili, Gabriele
name: Minoni, Umberto
name: Tonello, Alessandro
name: Couderc, Vincent
name: Barthélémy, Alain
name: Labruyère, Alexis
name: Shalaby, Badr Mohammed
name: Leproux, Philippe
name: Wabnitz, Stefan
name: Aceves, Alejandro B.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We describe the generation of powerful dispersive waves that are observed when pumping a dual concentric core microstructured fiber by means of a sub-nanosecond laser emitting at the wavelength of~1064 nm. The presence of three zeros in the dispersion curve, their spectral separation from the pump wavelength, and the complex dynamics of solitons originated by the pump pulse break-up, all contribute to boost the amplitude of the dispersive wave on the long-wavelength side of the pump. The measured conversion efficiency towards the dispersive wave at 1548 nm is as high as 50%. Our experimental analysis of the output spectra is completed by the acquisition of the time delays of the different spectral components. Numerical simulations and an analytical perturbative analysis identify the central wavelength of the red-shifted pump solitons and the dispersion profile of the fiber as the key parameters for determining the efficiency of the dispersive wave generation process.
description: 11 pages, 12 figures
Accelerated vascular aging: Ethnic differences in basilar artery length and diameter, and its association with cardiovascular risk factors and cerebral small vessel disease.
Creators: name: Sudre, Carole H
name: Moriconi, Stefano
name: Rehwald, Rafael
name: Smith, Lorna
name: Tillin, Therese
name: Barnes, Josephine
name: Atkinson, David
name: Ourselin, Sébastien
name: Chaturvedi, Nish
name: Hughes, Alun D
name: Jäger, H Rolf
name: Cardoso, M Jorge
Publisher: name: Apollo - University of Cambridge Repository
Year: 2022
Subjects: Cardiovascular Medicine
basilar artery (BA)
white matter hyperintensities (WMH)
aging
ethnicity
early vascular aging
cerebral small vessel disease

description: Background and aims: Risk of stroke and dementia is markedly higher in people of South Asian and African Caribbean descent than white Europeans in the UK. This is unexplained by cardiovascular risk factors (CVRF). We hypothesized this might indicate accelerated early vascular aging (EVA) and that EVA might account for stronger associations between cerebral large artery characteristics and markers of small vessel disease. Methods: 360 participants in a tri-ethnic population-based study (120 per ethnic group) underwent cerebral and vertebral MRI. Length and median diameter of the basilar artery (BA) were derived from Time of Flight images, while white matter hyperintensities (WMH) volumes were obtained from T1 and FLAIR images. Associations between BA characteristics and CVRF were assessed using multivariable linear regression. Partial correlation coefficients between WMH load and BA characteristics were calculated after adjustment for CVRF and other potential confounders. Results: BA diameter was strongly associated with age in South Asians (+11.3 μm/year 95% CI = [3.05; 19.62]; p = 0.008), with unconvincing relationships in African Caribbeans (3.4 μm/year [-5.26, 12.12]; p = 0.436) or Europeans (2.6 μm/year [-5.75, 10.87]; p = 0.543). BA length was associated with age in South Asians (+0.34 mm/year [0.02; 0.65]; p = 0.037) and African Caribbeans (+0.39 mm/year [0.12; 0.65]; p = 0.005) but not Europeans (+0.08 mm/year [-0.26; 0.41]; p = 0.653). BA diameter (rho = 0.210; p = 0.022) and length (rho = 0.261; p = 0.004) were associated with frontal WMH load in South Asians (persisting after multivariable adjustment for CVRF). Conclusions: Compared with Europeans, the basilar artery undergoes more accelerated EVA in South Asians and in African Caribbeans, albeit to a lesser extent. Such EVA may contribute to the higher burden of CSVD observed in South Asians and excess risk of stroke, vascular cognitive impairment and dementia observed in these ethnic groups.
Stochastic Battery Model for Aggregation of Thermostatically Controlled Loads
Creators: name: Khan, Sohail
name: Shahzad, Mohsin
name: Habib, Usman
name: Gawlik, Wolfgang
name: Palensky, Peter
Publisher: name: arXiv
Year: 2016
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The potential of demand side as a frequency reserve proposes interesting opportunity in handling imbalances due to intermittent renewable energy sources. This paper proposes a novel approach for computing the parameters of a stochastic battery model representing the aggregation of Thermostatically Controlled Loads (TCLs). A hysteresis based non-disruptive control is used using priority stack algorithm to track the reference regulation signal. The parameters of admissible ramp-rate and the charge limits of the battery are dynamically calculated using the information from TCLs that is the status (on/off), availability and relative temperature distance till the switching boundary. The approach builds on and improves on the existing research work by providing a straight-forward mechanism for calculation of stochastic parameters of equivalent battery model. The effectiveness of proposed approach is demonstrated by a test case having a large number of residential TCLs tracking a scaled down real frequency regulation signal.
description: IEEE ICIT 2016 conference
Preperiodic portraits for unicritical polynomials over a rational function field
Creators: name: Doyle, John R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Dynamical Systems (math.DS)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Let $K$ be an algebraically closed field of characteristic zero, and let $\mathcal{K} := K(t)$ be the rational function field over $K$. For each $d \ge 2$, we consider the unicritical polynomial $f_d(z) := z^d + t \in \mathcal{K}[z]$, and we ask the following question: If we fix $α\in \mathcal{K}$ and integers $M \ge 0$, $N \ge 1$, and $d \ge 2$, does there exist a place $\mathfrak{p} \in \operatorname{Spec} K[t]$ such that, modulo $\mathfrak{p}$, the point $α$ enters into an $N$-cycle after precisely $M$ steps under iteration by $f_d$? We answer this question completely, concluding that the answer is generally affirmative and explicitly giving all counterexamples. This extends previous work by the author in the case that $α$ is a constant point.
description: 18 pages + references
Effect of Misfit Strain in (Ga,Mn)(Bi,As) Epitaxial Layers on their Magnetic and Magneto-Transport Properties
Creators: name: Levchenko, K.
name: Andrearczyk, T.
name: Domagala, J. Z.
name: Sadowski, J.
name: Kowalczyk, L.
name: Szot, M.
name: Figielski, T.
name: Wosinski, T.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Effect of misfit strain in the layers of (Ga,Mn)(Bi,As) quaternary diluted magnetic semiconductor, epitaxially grown on either GaAs substrate or (In,Ga)As buffer, on their magnetic and magneto-transport properties has been investigated. High-resolution X-ray diffraction, applied to characterize the structural quality and misfit strain in the layers, proved that the layers were fully strained to the GaAs substrate or (In,Ga)As buffer under compressive or tensile strain, respectively. Ferromagnetic Curie temperature and magnetocrystalline anisotropy of the layers have been examined by using magneto-optical Kerr effect magnetometry and low-temperature magneto-transport measurements. Post-growth annealing treatment of the layers has been shown to enhance the hole concentration and Curie temperature in the layers.
description: 8 pages, 3 figures
The Rotation-Activity Correlations in K and M dwarfs. I. Stellar parameters, compilations of $v\sin i$ and $P/\sin i$ for a large sample of late-K and M dwarfs
Creators: name: Houdebine, E. R.
name: Mullan, D. J.
name: Paletou, F.
name: Gebran, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Reliable determination of Rotation-Activity Correlation (RAC's) depends on precise measurements of the following stellar parameters: $T_{eff}$, parallax, radius, metallicity, and rotational speed $v\sin i$. In this paper, our goal is to focus on the determination of these parameters for a sample of K and M dwarfs. In a future paper (Paper II), we will combine our rotational data with activity data in order to construct RAC's. Here, we report on a determination of effective temperatures based on the (R-I)$_C$ color from the calibrations of Mann et al. (2015) and Kenyon \& Hartmann (1995) for four samples of late-K, dM2, dM3 and dM4 stars. We also determine stellar parameters ($T_{eff}$, $log(g)$ and [M/H]) using the PCA-based inversion technique for a sample of 105 late-K dwarfs. We compile all effective temperatures from the literature for this sample. We determine empirical radius-[M/H] correlations in our stellar samples. This allows us to propose new effective temperatures, stellar radii, and metallicities for a large sample of 612 late-K and M dwarfs. Our mean radii agree well with those of Boyajian et al. (2012). We analyze HARPS and SOPHIE spectra of 105 late-K dwarfs, and have detected $v\sin i$ in 92 stars. In combination with our previous $v\sin i$ measurements in M and K dwarfs, we now derive $P/sin i$ measures for a sample of 418 K and M dwarfs. We investigate the distributions of $P/sin i$ and we show that they are different from one spectral sub-type to another at a 99.9\% confidence level.
description: 51 pages, 15 Figures, 7 Tables
Amethystea caerulea Linnaeus 1753
Creators: name: Jarvis, Charlie
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Lamiales
Lamiaceae
Amethystea
Amethystea caerulea

description: Amethystea caerulea Linnaeus, Species Plantarum 1: 21. 1753. "Habitat in Sibiriae montis." RCN: 168. Lectotype (Press in Jarvis & al., Regnum Veg. 127: 17. 1993): Herb. Linn. No. 37.1 (LINN). Generitype of Amethystea Linnaeus. Current name:  Amethystea caerulea L. (Lamiaceae).
description: Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part A), pp. 252-342 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 286, DOI: 10.5281/zenodo.291971
Heritability and cross-species comparisons of human cortical functional organization asymmetry.
Creators: name: Wan, Bin
name: Bayrak, Şeyma
name: Xu, Ting
name: Schaare, H Lina
name: Bethlehem, Richard AI
name: Bernhardt, Boris C
name: Valk, Sofie L
Publisher: name: Apollo - University of Cambridge Repository
Year: 2022
Subjects: Research Article
Neuroscience
asymmetry
functional gradients
heritability
evolution
large-scale organization
cerebral cortex
Human
Rhesus macaque

description: Funder: Max-Planck-Gesellschaft; FundRef: http://dx.doi.org/10.13039/501100004189
description: Funder: Azrieli Center for Autism Research
description: Funder: Canada First Research Excellence Fund; FundRef: http://dx.doi.org/10.13039/501100010785
description: Funder: International Max Planck Research School on Neuroscience of Communication: Function, Structure, and Plasticity
description: The human cerebral cortex is symmetrically organized along large-scale axes but also presents inter-hemispheric differences in structure and function. The quantified contralateral homologous difference, that is asymmetry, is a key feature of the human brain left-right axis supporting functional processes, such as language. Here, we assessed whether the asymmetry of cortical functional organization is heritable and phylogenetically conserved between humans and macaques. Our findings indicate asymmetric organization along an axis describing a functional trajectory from perceptual/action to abstract cognition. Whereas language network showed leftward asymmetric organization, frontoparietal network showed rightward asymmetric organization in humans. These asymmetries were heritable in humans and showed a similar spatial distribution with macaques, in the case of intra-hemispheric asymmetry of functional hierarchy. This suggests (phylo)genetic conservation. However, both language and frontoparietal networks showed a qualitatively larger asymmetry in humans relative to macaques. Overall, our findings suggest a genetic basis for asymmetry in intrinsic functional organization, linked to higher order cognitive functions uniquely developed in humans.
Transmission of a microwave cavity coupled to localized Shiba states
Creators: name: Chirla, Razvan
name: Manolescu, Andrei
name: Moca, Catalin Pascu
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider a strongly correlated quantum dot, tunnel coupled to two superconducting leads and capacitively coupled to a single mode microwave cavity. When the superconducting gap is the largest energy scale, multiple Shiba states are formed inside the gap. The competition of these states for the ground state signals a quantum phase transition. We demonstrate that photonic measurements can be used to probe such localized Shiba states. Moreover, the quantum phase transition can be pinpointed exactly from the sudden change in the transmission signal. Calculations were performed using the numerical renormalization group approach.
description: 9 pages, 8 figures
Met Office NWP global model revision history
Creators: name: Unknown
Publisher: name: Zenodo
Year: 2017
Subjects: subject: https://id.loc.gov/authorities/subjects/sh2018002590.html
subject: https://id.loc.gov/authorities/subjects/sh85084334.html

description: This page lists the full operational history of the Met Office deterministic global model since the introduction of the UM in 1991. Whilst other sources will contain more detailed information, this page highlights the most significant changes.
description: Previously curated at: http://cedadocs.ceda.ac.uk/1329/ Main files in this record: historyNWPScience.pdf Item originally deposited with Centre for Environmental Data Analysis (CEDA) document repository by Miss Kate Winfield. Transferred to CEDA document repository community on Zenodo on 2022-11-24
Gas Sensing with h-BN Capped MoS2 Heterostructure Thin Film Transistors
Creators: name: Liu, G.
name: Rumyantsev, S. L.
name: Jiang, C.
name: Shur, M. S.
name: Balandin, A. A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have demonstrated selective gas sensing with molybdenum disulfide (MoS2) thin films transistors capped with a thin layer of hexagonal boron nitride (h-BN). The resistance change was used as a sensing parameter to detect chemical vapors such as ethanol, acetonitrile, toluene, chloroform and methanol. It was found that h-BN dielectric passivation layer does not prevent gas detection via changes in the source-drain current in the active MoS2 thin film channel. The use of h-BN cap layers (thickness H=10 nm) in the design of MoS2 thin film gas sensors improves device stability and prevents device degradation due to environmental and chemical exposure. The obtained results are important for applications of van der Waals materials in chemical and biological sensing.
description: 3 pages; 4 figures
Field of view for near-field aperture synthesis imaging
Creators: name: Buscher, David F.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Aperture synthesis techniques are increasingly being employed to provide high angular resolution images in situations where the object of interest is in the near field of the interferometric array. Previous work has showed that an aperture synthesis array can be refocused on an object in the near field of an array, provided that the object is smaller than the effective Fresnel zone size corresponding to the array-object range. We show here that, under paraxial conditions, standard interferometric techniques can be used to image objects which are substantially larger than this limit. We also note that interferometric self-calibration and phase-closure image reconstruction techniques can be used to achieve near-field refocussing without requiring accurate object range information. We use our results to show that the field of view for high-resolution aperture synthesis imaging of geosynchronous satellites from the ground can be considerably larger than the largest satellites in Earth orbit.
description: Accepted for publication in Optics Letters [\c{opyright} 2015 Optical Society of America.]. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited
title: Full quantum crossed products, invariant measures, and type-I lifting
Creators: name: Chirvasitu, Alexandru
Publisher: name: Mathematisches Institut (Universität Münster)
Year: 2023
Subjects: subject: 510 Mathematics

description: We show that, for a closed embedding H ≤ G of locally compact quantum groups (LCQGs) with G/H admitting an invariant probability measure, a unitary G-representation is type-I if its restriction to H is. On a related note, we also prove that if an action G 0 A of an LCQG on a unital C*-algebra admits an invariant state, then the full group algebra of G embeds into the resulting full crossed product (and into the multiplier algebra of that crossed product if the original algebra is not unital). We also prove a few other results on crossed products of LCQG actions, some of which seem to be folklore; among them are (a) the fact that two mutually dual quantum-group morphisms produce isomorphic full crossed products, and (b) the fact that full and reduced crossed products by dual-coamenable LCQGs are isomorphic.
Minimalist design of a robust real-time quantum random number generator
Creators: name: Kravtsov, K. S.
name: Radchenko, I. V.
name: Kulik, S. P.
name: Molotkov, S. N.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a simple and robust construction of a real-time quantum random number generator (QRNG). Our minimalist approach ensures stable operation of the device as well as its simple and straightforward hardware implementation as a stand-alone module. As a source of randomness the device uses measurements of time intervals between clicks of a single-photon detector. The obtained raw sequence is then filtered and processed by a deterministic randomness extractor, which is realized as a look-up table. This enables high speed on-the-fly processing without the need of extensive computations. The overall performance of the device is around 1 random bit per detector click, resulting in 1.2 Mbit/s generation rate in our implementation.
Short codes and terminology used in the UKCP09 CSV Archive
Creators: name: Unknown
Publisher: name: Zenodo
Year: 2017
Subjects: subject: https://id.loc.gov/authorities/subjects/sh2018002590.html
subject: https://id.loc.gov/authorities/subjects/sh85084334.html

description: Short codes and terminology used in the UKCP09 CSV Archive
description: Previously curated at: http://cedadocs.ceda.ac.uk/1328/ Main files in this record: csv_archive_template.pdf Item originally deposited with Centre for Environmental Data Analysis (CEDA) document repository by Miss Kate Winfield. Transferred to CEDA document repository community on Zenodo on 2022-11-24
NWP Global Atmosphere Model (PS39, implemented on 11 Jul 2017)
Creators: name: Unknown
Publisher: name: Zenodo
Year: 2017
Subjects: subject: https://id.loc.gov/authorities/subjects/sh2018002590.html
subject: https://id.loc.gov/authorities/subjects/sh85084334.html

description: Brief description of the Met Office Numerical Weather Prediction (NWP) global atmospheric model (PS39) that was implemented on 11th July 2017.
description: Previously curated at: http://cedadocs.ceda.ac.uk/1330/ Main files in this record: PS39NWPScience.pdf Item originally deposited with Centre for Environmental Data Analysis (CEDA) document repository by Miss Kate Winfield. Transferred to CEDA document repository community on Zenodo on 2022-11-24
Progress in coupling MPGD-based Photon Detectors with Nanodiamond Photocathodes
Creators: name: Brunbauer, F. M.
name: Chatterjee, C.
name: Cicala, G.
name: Cicuttin, A.
name: Crespo, M. L.
name: D'Ago, D.
name: Torre, S. Dalla
name: Dasgupta, S.
name: Gregori, M.
name: Levorato, S.
name: Ligonzo, T.
name: Lisowska, M.
name: Leone, M. S.
name: Rai, R.
name: Ropelewski, L.
name: Tessarotto, F.
name: Triloki
name: Valentini, A.
name: Velardi, L.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The next generation of gaseous photon detectors is requested to overcome the limitations of the available technology, in terms of resolution and robustness. The quest for a novel photocathode, sensitive in the far vacuum ultra violet wavelength range and more robust than present ones, motivated an R&D programme to explore nanodiamond based photoconverters, which represent the most promising alternative to cesium iodine. A procedure for producing the novel photocathodes has been defined and applied on THGEMs samples. Systematic measurements of the photo emission in different Ar/CH4 and Ar/CO2 gas mixtures with various types of nanodiamond powders have been performed. A comparative study of the response of THGEMs before and after coating demonstrated their full compatibility with the novel photocathodes.