cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Integrated analyses of growth differentiation factor-15 concentration and cardiometabolic diseases in humans.
Creators: name: Lemmelä, Susanna
name: Wigmore, Eleanor M
name: Benner, Christian
name: Havulinna, Aki S
name: Ong, Rachel MY
name: Kempf, Tibor
name: Wollert, Kai C
name: Blankenberg, Stefan
name: Zeller, Tanja
name: Peters, James E
name: Salomaa, Veikko
name: Fritsch, Maria
name: March, Ruth
name: Palotie, Aarno
name: Daly, Mark
name: Butterworth, Adam S
name: Kinnunen, Mervi
name: Paul, Dirk S
name: Matakidou, Athena
Publisher: name: Apollo - University of Cambridge Repository
Year: 2022
Subjects: Research Article
Epidemiology and Global Health
Genetics and Genomics
GDF15
genetics
causality
Mendelian randomisation
BMI
obesity
Human

description: Funder: Sydäntutkimussäätiö; FundRef: http://dx.doi.org/10.13039/501100005633
description: Growth differentiation factor-15 (GDF15) is a stress response cytokine that is elevated in several cardiometabolic diseases and has attracted interest as a potential therapeutic target. To further explore the association of GDF15 with human disease, we conducted a broad study into the phenotypic and genetic correlates of GDF15 concentration in up to 14,099 individuals. Assessment of 772 traits across 6610 participants in FINRISK identified associations of GDF15 concentration with a range of phenotypes including all-cause mortality, cardiometabolic disease, respiratory diseases and psychiatric disorders, as well as inflammatory markers. A meta-analysis of genome-wide association studies (GWAS) of GDF15 concentration across three different assay platforms (n=14,099) confirmed significant heterogeneity due to a common missense variant (rs1058587; p.H202D) in GDF15, potentially due to epitope-binding artefacts. After conditioning on rs1058587, statistical fine mapping identified four independent putative causal signals at the locus. Mendelian randomisation (MR) analysis found evidence of a causal relationship between GDF15 concentration and high-density lipoprotein (HDL) but not body mass index (BMI). Using reverse MR, we identified a potential causal association of BMI on GDF15 (IVW pFDR = 0.0040). Taken together, our data derived from human population cohorts do not support a role for moderately elevated GDF15 concentrations as a causal factor in human cardiometabolic disease but support its role as a biomarker of metabolic stress.
Bubble spreading during the boiling crisis: modelling and experimenting in microgravity
Creators: name: Nikolayev, Vadim
name: Beysens, D
name: Garrabos, Y
name: Lecoutre, C
name: Chatain, D
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Boiling is a very efficient way to transfer heat from a heater to the liquid carrier. We discuss the boiling crisis, a transition between two regimes of boiling: nucleate and film boiling. The boiling crisis results in a sharp decrease in the heat transfer rate, which can cause a major accident in industrial heat exchangers. In this communication, we present a physical model of the boiling crisis based on the vapor recoil effect. Under the action of the vapor recoil the gas bubbles begin to spread over the heater thus forming a germ for the vapor film. The vapor recoil force not only causes its spreading, it also creates a strong adhesion to the heater that prevents the bubble departure, thus favoring the further spreading. Near the liquid-gas critical point, the bubble growth is very slow and allows the kinetics of the bubble spreading to be observed. Since the surface tension is very small in this regime, only microgravity conditions can preserve a convex bubble shape. In the experiments both in the Mir space station and in the magnetic levitation facility, we directly observed an increase of the apparent contact angle and spreading of the dry spot under the bubble. Numerical simulations of the thermally controlled bubble growth show this vapor recoil effect too thus confirming our model of the boiling crisis.
description: arXiv admin note: text overlap with arXiv:0707.3009, Microgravity Sciences and Technology, 2006
Overlapping Resonances in Open Quantum Systems
Creators: name: Merkli, Marco
name: Song, Haifeng
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 82C10 81S22

description: An $N$-level quantum system is coupled to a bosonic heat reservoir at positive temperature. We analyze the system-reservoir dynamics in the following regime: The strength $λ$ of the system-reservoir coupling is fixed and small, but larger than the spacing $σ$ of system energy levels. For vanishing $σ$ there is a manifold of invariant system-reservoir states and for $σ>0$ the only invariant state is the joint equilibrium. The manifold is invariant for $σ=0$ but becomes quasi-invariant for $σ>0$. Namely, on a first time-scale of the order $1/λ^2$, initial states approach the manifold. Then they converge to the joint equilibrium state on a much larger time-scale of the order $λ^2/σ^2$. We give a detailed expansion of the system-reservoir evolution showing the above scenario.
description: Annales Henri Poincare 2014
Spilomicrus crassiclavis Kieffer 1911
Creators: name: Notton, David G.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Diapriidae
Spilomicrus
Spilomicrus crassiclavis

description: Spilomicrus crassiclavis Kieffer, 1911a: 788.
Valid name
Spilomicrus crassiclavis Kieffer, 1911.
Summary of types
Lectotype ♀, BMNH number 9.645a, designated by Notton (1999).
Primary type data
Mugdock/ 11-7; Cameron Coll./ 1910-302.; Mugdock; Determined by/ Dr Kieffer.; Spilomicrus / crassiclavis, K.; Spilomicrus / formosus Janss. / G.Nixon det. 1972; ♀ Lectotype / Spilomicrus / crassiclavis/ Kieffer, 1911: 788/ des. D. Notton, 1999.
Type locality
Scotland, Mugdock.
Remarks
This species was described from an unspecified number of females and males. The lectotype is mounted on a card, left antenna missing, right fore wing disarticulated. Spilomicrus crassiclavis was previously confused with Spilomicrus formosus Jansson, 1942 by Nixon (1980), but this is a different species (Notton 1999).
description: Published as part of Notton, David G., 2014, A catalogue of the types of Diapriinae (Hymenoptera, Diapriidae) at the Natural History Museum, London, pp. 1-123 in European Journal of Taxonomy 75 on page 56, DOI: 10.5852/ejt.2014.75, http://zenodo.org/record/3862773
Sansevieria hyacinthoides Druce 1913
Creators: name: Jarvis, Charlie
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Asparagaceae
Sansevieria
Sansevieria hyacinthoides

description: Aletris hyacinthoides (Linnaeus) Linnaeus, Species Plantarum, ed. 2, 1: 456. 1762. "Habitat α in Zeylona, β in Guinea." RCN: 2504. Basionym: Aloë hyacinthoides L. (1753). Lectotype (Stearn, Cat. Bot. Books Miller Hunt 2(1): liii. 1961): [icon] " Aloe Guineensis radice geniculata fol. variegato " in Commelin, Praeludia Bot.: 84, t. 33. 1703. Current name:  Sansevieria hyacinthoides (L.) Druce (Agavaceae / Liliaceae).
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 274, DOI: 10.5281/zenodo.291971
Exact regularized point particle method for multi-phase flows in the two-way coupling regime
Creators: name: Gualtieri, P.
name: Picano, F.
name: Sardina, G.
name: Casciola, C. M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Particulate flows have been largely studied under the simplifying assumptions of one-way coupling regime where the disperse phase do not react-back on the carrier fluid. In the context of turbulent flows, many non trivial phenomena such as small scales particles clustering or preferential spatial accumulation have been explained and understood. A more complete view of multiphase flows can be gained calling into play two-way coupling effects, i.e. by accounting for the inter-phase momentum exchange between the carrier and the suspended phase, certainly relevant at increasing mass loading. In such regime, partially investigated in the past by the so-called Particle In Cell (PIC) method, much is still to be learned about the dynamics of the disperse phase and the ensuing alteration of the carrier flow. In this paper we present a new methodology rigorously designed to capture the inter-phase momentum exchange for particles smaller than the smallest hydrodynamical scale, e.g. the Kolmogorov scale in a turbulent flow. In fact, the momentum coupling mechanism exploits the unsteady Stokes flow around a small rigid sphere where the transient disturbance produced by each particle is evaluated in a closed form. The particles are described as lumped, point masses which would lead to the appearance of singularities. A rigorous regularization procedure is conceived to extract the physically relevant interactions between particles and fluid which avoids any "ah hoc" assumption. The approach is suited for high efficiency implementation on massively parallel machines since the transient disturbance produced by the particles is strongly localized in space around the actual particle position. As will be shown, hundred thousands particles can therefore be handled at an affordable computational cost as demonstrated by a preliminary application to a particle laden turbulent shear flow.
description: Submitted to Journal of Fluid Mechanics, 56 pages, 15 figures
Population Properties of Brown Dwarf Analogs to Exoplanets
Creators: name: Faherty, Jacqueline K.
name: Riedel, Adric R.
name: Cruz, Kelle L.
name: Gagne, Jonathan
name: Filippazzo, Joseph C.
name: Lambrides, Erini
name: Fica, Haley
name: Weinberger, Alycia
name: Thorstensen, John R.
name: Tinney, C. G.
name: Baldassare, Vivienne
name: Lemonier, Emily
name: Rice, Emily L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a kinematic analysis of 152 low surface gravity M7-L8 dwarfs by adding 8 parallaxes, 38 radial velocities, and 19 proper motions. We find 39 objects to be high-likelihood or bona fide members of nearby moving groups, 92 objects to be ambiguous members and 21 objects that are non-members. We find that gravity classification and photometric color separate 5-150 Myr sources from > 3 Gyr field objects, but they do not correlate one-to-one with the narrower 5 -150 Myr age range. The absolute magnitudes of low-gravity sources from J band through W3 show a flux redistribution when compared to equivalent field sources that is correlated with spectral subtype. Clouds, which are a far more dominant opacity source for L dwarfs, are the likely cause. On CMDs, the latest-type low-gravity L dwarfs drive the elbow of the L/T transition up to 1 mag redder and 1 mag fainter than field dwarfs at M_J but are consistent with or brighter than the elbow at M_W1 and M_W2. Furthermore, there is an indication on CMD's (such as M_J versus (J-W2) of increasingly redder sequences separated by gravity classification. Examining bolometric luminosities for planets and low-gravity objects, we confirm that young M dwarfs are overluminous while young L dwarfs are normal compared to the field. This translates into warmer M dwarf temperatures compared to the field sequence while lower temperatures for L dwarfs.
description: Accepted for Publication in ApJs. 84 pages, 43 Figures, 19 Tables
Detection of Bessel beams with digital axicons
Creators: name: Trichili, Abderrahmen
name: Mhlanga, Thandeka
name: Ismail, Yaseera
name: Roux, Filippus
name: McLaren, Melanie
name: Zghal, Mourad
name: Forbes, Andrew
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We propose a simple method for the detection of Bessel beams with arbitrary radial and azimuthal indices, and then demonstrate it in an all-digital setup with a spatial light modulator. We confirm that the fidelity of the detection method is very high, with modal cross-talk below 5%, even for high orbital angular momentum carrying fields with long propagation ranges. To illustrate the versatility of the approach we use it to observe the modal spectrum changes during the self-reconstruction process of Bessel beams after encountering an obstruction, as well as to characterize modal distortions of Bessel beams propagating through atmospheric turbulence.
Sansevieria hyacinthoides Druce 1913
Creators: name: Jarvis, Charlie
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Asparagaceae
Sansevieria
Sansevieria hyacinthoides

description: Aletris hyacinthoides (Linnaeus) Linnaeus var. guineensis (Linnaeus) Linnaeus, Species Plantarum, ed. 2, 1: 456. 1762. "Habitat in Guinea." RCN: 2504. Basionym: Aloë hyacinthoides L. var. guineensis L. (1753). Lectotype (Stearn, Cat. Bot. Books Miller Hunt 2(1): liii. 1961): [icon] " Aloe Guineensis radice geniculata fol. variegato " in Commelin, Praeludia Bot.: 84, t. 33. 1703. Current name:  Sansevieria hyacinthoides (L.) Druce (Agavaceae / Liliaceae).
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 pages 274-275, DOI: 10.5281/zenodo.291971
Husimi distribution for nucleon tomography
Creators: name: Hatta, Yoshitaka
name: Hagiwara, Yoshikazu
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We define the QCD Husimi distribution as the phase space distribution of partons inside the nucleon. Compared to the more well-known Wigner distribution, the Husimi distribution is better behaved and positive. It thus allows for a probabilistic interpretation and can be used to define the `entropy' of the nucleon as a measure of complexity of the partonic structure. A possible connection to the Color Glass Condensate approach at small-$x$ is also discussed.
description: Talks given at POETIC VI and PacSPIN2015, to appear in the proceedings
Harm and Shaming through Naming: Examining Why Calling the Coronavirus, “COVID-19 Virus,” Not the “Chinese Virus,” Matters
Creators: name: Holt, Lanier Frush
name: Kjærvik, Sophie L.
name: Bushman, Brad J.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Neuroscience
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Plant Biology
subject: FOS: Biological sciences
subject: 60506 Virology

description: In an effort to stave off racial and geographic prejudices, The World Health Organization (WHO) has advised against naming pathogens for geographic regions. Despite this, some media reports, and prominent politicians, have persisted in calling the coronavirus the “Chinese Virus,” or some variant thereof. In this pre-registered online experiment (N = 614), we examined the effect media frames and individual factors (i.e., political affiliation and party) had on perceptions of COVID-19, prejudice against Chinese- and Asian-Americans, and attributing blame to China for the coronavirus. We found that articles that labeled the coronavirus the “Chinese Virus” (versus the “COVID-19 Virus”) were perceived less favorably by Democrats and liberals, in comparison to Republicans and conservatives, who were also more likely to express greater racial prejudice against Chinese- and Asian-Americans and to blame China for the pandemic. Findings from this study suggest that amongst a host of other variables, media framing has an effect on the public’s attitudes and feelings of blame for the pandemic.
Direct frequency comb laser cooling and trapping
Creators: name: Jayich, A. M.
name: Long, X.
name: Campbell, W. C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Continuous wave (CW) lasers are the enabling technology for producing ultracold atoms and molecules through laser cooling and trapping. The resulting pristine samples of slow moving particles are the de facto starting point for both fundamental and applied science when a highly-controlled quantum system is required. Laser cooled atoms have recently led to major advances in quantum information, the search to understand dark energy, quantum chemistry, and quantum sensors. However, CW laser technology currently limits laser cooling and trapping to special types of elements that do not include highly abundant and chemically relevant atoms such as hydrogen, carbon, oxygen, and nitrogen. Here, we demonstrate that Doppler cooling and trapping by optical frequency combs may provide a route to trapped, ultracold atoms whose spectra are not amenable to CW lasers. We laser cool a gas of atoms by driving a two-photon transition with an optical frequency comb, an efficient process to which every comb tooth coherently contributes. We extend this technique to create a magneto-optical trap (MOT), an electromagnetic beaker for accumulating the laser-cooled atoms for further study. Our results suggest that the efficient frequency conversion offered by optical frequency combs could provide a key ingredient for producing trapped, ultracold samples of nature's most abundant building blocks, as well as antihydrogen. As such, the techniques demonstrated here may enable advances in fields as disparate as molecular biology and the search for physics beyond the standard model.
description: 10 pages, 5 figures
Synthetic aperture radar and Hyperspectral Airborne Campaign (SHAC2000) documents
Creators: name: Unknown
Publisher: name: Zenodo
Year: 2000
Subjects: data and information

description: Documents summarising the SHAC2000 data that are available from the NEODC/CEDA Catalogue. The following Excel spreadsheets summarise the SHAC data that are available from the NEODC: SHAC HyMAP data summary, SHAC E-SAR data summary, SHAC Extra HyMAP data summary Use the following Excel spreadsheet to select which data files you require: SHAC data files. Additional documents relating to the HyMap data: HyMap data notes, HyMap geocorrection information, HyMap system specifications.
description: Previously curated at: http://cedadocs.ceda.ac.uk/1124/ The publish date on this item was its original published date. Main files in this record: Extra_hymap_data_listing.xls Hymap_data_notes.doc HYMAP_GEOCORRECTION_INFORMATION.doc Hymap_specs.pdf SHAC_DATA_FILES.xls SHAC_ESAR_DATA_SUMMARY.xls SHAC_HYMAP_DATA_SUMMARY.xls Item originally deposited with Centre for Environmental Data Analysis (CEDA) document repository by Miss Poppy Townsend. Transferred to CEDA document repository community on Zenodo on 2022-11-24
Relation between Financial Market Structure and the Real Economy: Comparison between Clustering Methods
Creators: name: Musmeci, Nicolo
name: Aste, Tomaso
name: Di Matteo, Tiziana
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences

description: We quantify the amount of information filtered by different hierarchical clustering methods on correlations between stock returns comparing it with the underlying industrial activity structure. Specifically, we apply, for the first time to financial data, a novel hierarchical clustering approach, the Directed Bubble Hierarchical Tree and we compare it with other methods including the Linkage and k-medoids. In particular, by taking the industrial sector classification of stocks as a benchmark partition, we evaluate how the different methods retrieve this classification. The results show that the Directed Bubble Hierarchical Tree can outperform other methods, being able to retrieve more information with fewer clusters. Moreover, we show that the economic information is hidden at different levels of the hierarchical structures depending on the clustering method. The dynamical analysis on a rolling window also reveals that the different methods show different degrees of sensitivity to events affecting financial markets, like crises. These results can be of interest for all the applications of clustering methods to portfolio optimization and risk hedging.
description: 31 pages, 17 figures
Bounding quantum gravity inspired decoherence using atom interferometry
Creators: name: Minář, Jiří
name: Sekatski, Pavel
name: Sangouard, Nicolas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Hypothetical models have been proposed in which explicit collapse mechanisms prevent the superposition principle to hold at large scales. In particular, the model introduced by Ellis and co-workers [Phys. Lett. B ${\bf 221}$, 113 (1989)] suggests that quantum gravity might be responsible for the collapse of the wavefunction of massive objects in spatial superpositions. We here consider a recent experiment reporting on interferometry with atoms delocalized over half a meter for timescale of a second [Nature ${\bf 528}$, 530 (2015)] and show that the corresponding data strongly bound quantum gravity induced decoherence and rule it out in the parameter regime considered originally.
description: 3 pages
Sansevieria zeylanica Willd.
Creators: name: Jarvis, Charlie
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Asparagaceae
Sansevieria
Sansevieria zeylanica

description: Aletris hyacinthoides Linnaeus var. zeylanica (Linnaeus) Linnaeus, Species Plantarum, ed. 2, 1: 456. 1762. "Habitat in Zeylona." RCN: 2504. Basionym: Aloë hyacinthoides L. var. zeylanica L. (1753). Lectotype (Wijnands in Taxon 22: 109. 1973): [icon] " Aloe Zeylanica pumila foliis variegatis " in Commelin, Hort. Med. Amstelod. Pl. Rar. 2: 41, t. 21. 1701. Current name:  Sansevieria zeylanica (L.) Willd. (Agavaceae / Liliaceae).
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 275, DOI: 10.5281/zenodo.291971
Walk softly and carry a large carrot: how to give credit for academic work
Creators: name: Callaghan, Sarah
name: Carpenter, Todd
name: Kratz, John Ernest
Publisher: name: Zenodo
Year: 2015
Subjects: data and information

description: Researchers want to know how their work impacts their communities, and the wider world; including research outputs other than peer-reviewed journal publications. The journal paper provides a way of claiming and defining an area of intellectual work, and citation of articles allows the acknowledgement of that work by others. Yet the paper can only give an overview of the work - it is not possible to publish everything into a paper that is needed to make it fully reproducible. For providing credit (and for making recruitment and promotion decisions) we abstract the paper further. Instead of reading every citing paper, we instead count the citations, reckoning this an appropriate proxy for the quality of the paper, and hence the described work. Citation counts for datasets are one of the "carrots" promised to researchers for their efforts in citing and publishing data, also producing a metric by which the quality of a dataset can be evaluated. Quality is a slippery concept when it comes to data, which can be good quality for one purpose, and bad for another. Measuring the impact of research directly is difficult, so we resort to measuring what we can (number of citations). Care must be taken with indirect measurements to ensure that they map appropriately to what we really want to measure. This presentation will address the issue of providing credit, especially for non-article research outputs, using recent surveys on researchers' desires for evaluating their work's impact.
description: Previously curated at: http://cedadocs.ceda.ac.uk/1125/ Event type: conference. The publish date on this item was its original published date. This item was not refereed before the publication Main files in this record: FORCE2015_poster_final.pdf Item originally deposited with Centre for Environmental Data Analysis (CEDA) document repository by Dr Sarah Callaghan. Transferred to CEDA document repository community on Zenodo on 2022-11-24
Stability in the energy space of the sum of N peakons for the Degasperis-Procesi equation
Creators: name: Kabakouala, André
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: The Degasperis-Procesi equation possesses well-known peaked solitary waves that are called peakons. Their stability has been established by Lin and Liu in [5]. In this paper, we localize the proof (in some suitable sense detailed in Section 3) of the stability of a single peakon. Thanks to this, we extend the result of stability to the sum of N peakons traveling to the right with respective speeds c1, . . . , cN , such that the difference between consecutive locations of peakons is large enough.
description: arXiv admin note: text overlap with arXiv:0803.0261 by other authors
Suppression and splitting of modulational instability sidebands in periodically tapered optical fibers due to fourth-order dispersion
Creators: name: Armaroli, Andrea
name: Biancalana, Fabio
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We study the modulational instability induced by periodic variations of group-velocity dispersion in the proximity of the zero dispersion point. Multiple instability peaks originating from parametric resonance coexist with the conventional modulation instability due to fourth order dispersion, which in turn is suppressed by the oscillations of dispersion. Moreover isolated unstable regions appear in the space of parameters due to imperfect phase matching. This confirms the dramatic effect of periodic tapering in the control and shaping of MI sidebands in optical fibers.
Band magnetism with inter-site correlations and interactions
Creators: name: Mizia, J.
name: Górski, G.
name: Kucab, K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We introduce the Hamiltonian to describe narrow band electrons. The physics of driving forces towards ferromagnetism is re-examined. Using different approximations it has been shown that the magnetic moments created by inter-site interaction and inter-site kinetic correlation decrease quickly with temperature. As a result of these interactions and the realistic density of states (DOS) the Curie temperatures calculated after fitting magnetic moments to their low temperature values are realistic. In the past the Curie temperatures calculated using only the on-site interaction were much higher than the experimental temperatures.
description: 6 pages, 1 figure
RAE format SPEC (LANDSAT)
Creators: name: Unknown
Publisher: name: Zenodo
Year: 9999
Subjects: data and information

description: Documentation about RAE format SPEC (LANDSAT)
description: Previously curated at: http://cedadocs.ceda.ac.uk/1126/ The publish date on this item was its original published date. Main files in this record: RAE_format_SPEC_(LANDSAT).pdf Item originally deposited with Centre for Environmental Data Analysis (CEDA) document repository by Miss Poppy Townsend. Transferred to CEDA document repository community on Zenodo on 2022-11-24
Kniphofia uvaria Oken 1841
Creators: name: Jarvis, Charlie
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Xanthorrhoeaceae
Kniphofia
Kniphofia uvaria

description: Aletris uvaria (Linnaeus) Linnaeus, Systema Vegetabilium, ed. 13: 277. 1774. ["Habitat ad Cap. b. Spei."] Sp. Pl. 1: 323 (1753). RCN: 2506. Basionym: Aloë uvaria L. (1753). Lectotype (Codd in Dyer, Fl. Pl. Africa 33: t. 1289. 1959): Herb. Clifford: 133, Aloë 14 (BM-000558546). Current name:  Kniphofia uvaria (L.) Oken (Liliaceae / Asphodelaceae).
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 275, DOI: 10.5281/zenodo.291971
Identifying non-k-separability of a class of N-qubit complete graph states using correlation tensors
Creators: name: Ananth, N.
name: Senthilvelan, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive a general expression for standard tensor norm of $N$-body correlation tensors for $N$-qubit complete graph states. With the help of this expression, we formulate a separability criterion that identifies non-$k$-separability of a class of $N$-qubit complete graph states, including GHZ state. We illustrate the performance of our criterion by considering the $N$-qubit complete graph states added with colored product noise. We also demonstrate that few local measurement settings are sufficient to evaluate our criterion.
description: 14 pages, 4 figures, To appear in EPJD
Phase separation near half-filling point in superconducting compounds
Creators: name: Kucab, K.
name: Górski, G.
name: Mizia, J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present the model of superconducting ceramics using the single band extended Hubbard Hamiltonian. We investigate the simultaneous presence of antiferromagnetism (AF) and d-wave superconductivity (SC) in the coherent potential (CP) approximation applied to the on-site Coulomb repulsion $U$. We consider the hopping interaction, $Δt$, the inter-site charge-charge interaction, $V$, (creating SC), and the single site Hund's type exchange interaction, $F_{in}$, (creating AF). The influence of these interactions on the separation of superconducting and antiferromagnetic phases near the half-filling point is investigated. Results are compared with the experimental data for YBaCuO and NdCeCuO compounds.
description: 4 pages, 4 figures
ARSF related documents
Creators: name: Unknown
Publisher: name: Zenodo
Year: 9999
Subjects: data and information

description: ARSF related documents
description: Previously curated at: http://cedadocs.ceda.ac.uk/1127/ The publish date on this item was its original published date. Main files in this record: ARSF_related_document.pdf Item originally deposited with Centre for Environmental Data Analysis (CEDA) document repository by Miss Poppy Townsend. Transferred to CEDA document repository community on Zenodo on 2022-11-24
Echinodorus cordifolius Griseb.
Creators: name: Jarvis, Charlie
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Alismatales
Alismataceae
Echinodorus
Echinodorus cordifolius

description: Alisma cordifolia Linnaeus, Species Plantarum 1: 343. 1753. "Habitat in Virginia." RCN: 2631. Lectotype (Haynes & Holm-Nielsen in Brittonia 38: 329. 1986): [icon] " Sagittaria Virginiana obtusiore lato folio floribus minoribus albis " in Morison, Pl. Hist. Univ. 3: 618, s. 15, t. 4, f. 6. 1699. Current name:  Echinodorus cordifolius (L.) Griseb. (Alismataceae). Note: Fernald (in Rhodora 49: 108. 1947) cited an unspecified LINN sheet as “type”, presumably the post-1753, 473.4 (LINN) from Patrick 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 275, DOI: 10.5281/zenodo.291971
Automatic Weather Stations
Creators: name: Unknown
Publisher: name: Zenodo
Year: 9999
Subjects: data and information

description: Information about Automatic Weather Stations supplied by Munro.
description: Previously curated at: http://cedadocs.ceda.ac.uk/1128/ The publish date on this item was its original published date. Main files in this record: Automatic_Weather_Stations.pdf Item originally deposited with Centre for Environmental Data Analysis (CEDA) document repository by Miss Poppy Townsend. Transferred to CEDA document repository community on Zenodo on 2022-11-24
Droplet formation near first-order phase transitions: A mechanism for heterogeneity and phase separation away from the coexistence curve
Creators: name: Kirkpatrick, T. R.
name: Belitz, D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Phase separation, i.e., the coexistence of two different phases, is observed in many systems away from the coexistence curve of a first-order transition, leading to a stable heterogeneous phase or region. Examples include various quantum ferromagnets, heavy-fermion systems, rare-earth nickelates, and others. These observations seem to violate basic notions of equilibrium thermodynamics, which state that phase separation can occur only on the coexistence curve. We show theoretically that quenched disorder allows for phase separation away from the coexistence curve even in equilibrium due to the existence of stable minority-phase droplets within the majority phase. Our scenario also answers a related question: How can a first-order transition remain sharp in the presence of quenched disorder without violating the rigorous lower bound $ν\geq 2/d$ for the correlation-length exponent? We discuss this scenario in the context of experimental results for a large variety of systems.
description: 10pp, 2 figs
Tunable coupled-mode dispersion compensation and its application to on-chip resonant four-wave mixing
Creators: name: Gentry, Cale M.
name: Zeng, Xiaoge
name: Popovic, Milos A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We propose and demonstrate localized mode coupling as a viable dispersion engineering technique for phase-matched resonant four-wave mixing (FWM). We demonstrate a dual-cavity resonant structure that employs coupling-induced frequency splitting at one of three resonances to compensate for cavity dispersion, enabling phase-matching. Coupling strength is controlled by thermal tuning of one cavity enabling active control of the resonant frequency-matching. In a fabricated silicon microresonator, we show an 8 dB enhancement of seeded FWM efficiency over the non-compensated state. The measured four-wave mixing has a peak wavelength conversion efficiency of -37.9 dB across a free spectral range (FSR) of 3.334 THz ($\sim$27 nm). Enabled by strong counteraction of dispersion, this FSR is, to our knowledge, the largest in silicon to demonstrate FWM to date. This form of mode-coupling-based, active dispersion compensation can be beneficial for many FWM-based devices including wavelength converters, parametric amplifiers, and widely detuned correlated photon-pair sources. Apart from compensating intrinsic dispersion, the proposed mechanism can alternatively be utilized in an otherwise dispersionless resonator to counteract the detuning effect of self- and cross-phase modulation on the pump resonance during FWM, thereby addressing a fundamental issue in the performance of light sources such as broadband optical frequency combs.
Ellipsometry studies of Si/Ge superlattices with embedded Ge dots
Creators: name: Kalem, Seref
name: Arthursson, Orjan
name: Werner, Peter
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this paper, we present an analysis for treating the spectroscopic ellipsometry response of Si/Ge superlattices (SL) with embedded Ge dots. Spectroscopic ellipsometry (SE) measurement at room temperature was used to investigate optical and electronic properties of Si/Ge SL which were grown on silicon (Si) wafers having <111> crystallographic orientation. The results of the SE analysis between 200 nm and 1000 nm indicate that the SL system can effectively be described using interdiffusion/intermixing model by assuming a multicrystalline Si and Si1-xGex intermixing layers. The electronic transitions deduced from analysis reveal Si, Ge and alloying related critical energy points.
A New Class of Multiple-rate Codes Based on Block Markov Superposition Transmission
Creators: name: Liang, Chulong
name: Hu, Jingnan
name: Ma, Xiao
name: Bai, Baoming
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Hadamard transform~(HT) as over the binary field provides a natural way to implement multiple-rate codes~(referred to as {\em HT-coset codes}), where the code length $N=2^p$ is fixed but the code dimension $K$ can be varied from $1$ to $N-1$ by adjusting the set of frozen bits. The HT-coset codes, including Reed-Muller~(RM) codes and polar codes as typical examples, can share a pair of encoder and decoder with implementation complexity of order $O(N \log N)$. However, to guarantee that all codes with designated rates perform well, HT-coset coding usually requires a sufficiently large code length, which in turn causes difficulties in the determination of which bits are better for being frozen. In this paper, we propose to transmit short HT-coset codes in the so-called block Markov superposition transmission~(BMST) manner. At the transmitter, signals are spatially coupled via superposition, resulting in long codes. At the receiver, these coupled signals are recovered by a sliding-window iterative soft successive cancellation decoding algorithm. Most importantly, the performance around or below the bit-error-rate~(BER) of $10^{-5}$ can be predicted by a simple genie-aided lower bound. Both these bounds and simulation results show that the BMST of short HT-coset codes performs well~(within one dB away from the corresponding Shannon limits) in a wide range of code rates.
Damasonium alisma Mill.
Creators: name: Jarvis, Charlie
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Alismatales
Alismataceae
Damasonium
Damasonium alisma

description: Alisma damasonium Linnaeus, Species Plantarum 1: 343. 1753. "Habitat in Angliae, Galliae aquosis." RCN: 2630. Lectotype (Siddiqi & Ghafoor in Jafri & El-Gadi, Fl. Libya 85: 2. 1980): Herb. Linn. No. 473.3 (LINN). Current name:  Damasonium alisma Mill. (Alismataceae). Note: See discussion by Rich & Nicholls-Vuille (in Edinburgh J. Bot. 58: 50. 2001).
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 275, DOI: 10.5281/zenodo.291971
Optical realization of nonlinear quantum dynamics
Creators: name: Soto-Eguibar, F.
name: Arrizon, V.
name: Zúñiga-Segundo, A.
name: Moya-Cessa, H. M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In a cavity filled with a Kerr medium it is possible to generate the superposition of coherent states, i.e. Schroodinger cat states may be realized in this system. We show that such a medium may be mimicked by the propagation of a conveniently shaped Gaussian beam in a GRIN device. This is attained by introducing a second order correction to the paraxial propagation of the beam. An additional result is that a Gaussian beam propagating in GRIN media, may split into two Gaussian beams.
The exterior field of slowly and rapidly rotating neutron stars: Rehabilitating spacetime metrics involving hyperextreme objects
Creators: name: Manko, V. S.
name: Ruiz, E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The 4-parameter exact solution presumably describing the exterior gravitational field of a generic neutron star is presented in a concise explicit form defined by only three potentials. In the equatorial plane, the metric functions of the solution are found to be given by particularly simple expressions that make them very suitable for the use in concrete applications. Following Pappas and Apostolatos, we perform a comparison of the multipole structure of the solution with the multipole moments of the known physically realistic Berti-Stergioulas numerical models of neutron stars to argue that the hyperextreme sectors of the solution are not less (but possibly even more) important for the correct description of rapidly rotating neutron stars than the subextreme sector involving exclusively the black-hole constituents. We have also worked out in explicit form an exact analog of the well-known Hartle-Thorne approximate metric.
description: 14 pages, 1 figure
Minimum Noise Optical Coatings for Interferometric Detectors of Gravitational Waves
Creators: name: Principe, Maria
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Coating Brownian noise is the dominant noise term, in a frequency band from a few tens to a few hundreds Hz, for all Earth-bound detectors of gravitational waves. Minimizing such noise is mandatory to increase the visibility distance of these instruments, and eventually reach their quantum limit. Several strategies are possible to achieve this goal. Layer thickness optimization is the simplest option, yielding a sensible noise reduction with limited technological challenges. Experimental results confirm the accuracy of the underlying theory, and the robustness of the design.
description: 6 pages, 9 figures, 50 references, Proc of the IEEE International Workshop on Metrology for Aerospace 2014
Slow light microfluidics: a proposal
Creators: name: Sumetsky, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The resonant slow light structures created along a thin-walled optical capillary by nanoscale deformation of its surface can perform comprehensive simultaneous detection and manipulation of microfluidic components. This concept is illustrated with a model of a 0.5 millimeter long 5 nm high triangular bottle resonator created at a 50 micron radius silica capillary containing floating microparticles. The developed theory shows that the microparticle positions can be determined from the bottle resonator spectrum. In addition, the microparticles can be driven and simultaneously positioned at predetermined locations by the localized electromagnetic field created by the optimized superposition of eigenstates of this resonator, thus, exhibiting a multicomponent near field optical tweezers.
Phase diagram and multicritical behaviors of mixtures of 3D bosonic gases
Creators: name: Ceccarelli, Giacomo
name: Nespolo, Jacopo
name: Pelissetto, Andrea
name: Vicari, Ettore
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the Bose-Einstein condensation patterns, the critical and multicritical behaviors of three-dimensional mixtures of bosonic gases with short-range density-density interactions. These systems have a global U(1)+U(1) symmetry, as the system Hamiltonian is invariant under independent U(1) transformations acting on each species. In particular, we consider the three-dimensional Bose-Hubbard model for two lattice bosonic gases coupled by an on-site inter-species density-density interaction. We study the phase diagram and the critical behaviors along the transition lines characterized by the Bose-Einstein condensation of one or both species. We present mean-field calculations and numerical finite-size scaling analyses of quantum Monte Carlo data. We also consider multicritical points, close to which it is possible to observe the condensation of both gas components. We determine the possible multicritical behaviors by using field-theoretical perturbative methods. We consider the U(1)+U(1)-symmetric Landau-Ginzburg-Wilson Phi4 theory and determine the corresponding stable fixed points of the renormalization-group flow. The analysis predicts that, in all cases, the multicritical behavior is analogous to the one that would be observed in systems of two identical gases, with an additional Z_2 exchange symmetry.
description: 16 pages
Ground-state entanglement of spin-1 bosons undergoing superexchange interactions in optical superlattices
Creators: name: Barasiński, Artur
name: Leoński, Wiesław
name: Sowiński, Tomasz
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We discuss a model with ultra-cold atoms confined in optical superlattices. In particular, we study the ground-state properties of two spin-1 bosons trapped in a double-well potential. Depending on the external magnetic field and biquadratic interactions different phases of magnetic order are realized. Applying von Neumann entropy and number of relevant orbitals, we quantify the bipartite entanglement between particles. Changing the values of the parameters determining superlattices, we can switch the system between differently entangled states.
Limnocharis flava Buchenau 1868
Creators: name: Jarvis, Charlie
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Alismatales
Alismataceae
Limnocharis
Limnocharis flava

description: Alisma flava Linnaeus, Species Plantarum 1: 343. 1753. "Habitat in America meridionali." RCN: 2629. Lectotype (Howard, Fl. Lesser Antilles 3: 19. 1979): [icon] " Butomus foliis cordato-ovatis " in Plumier in Burman, Pl. Amer.: 105, t. 115. 1757. Current name:  Limnocharis flava (L.) Buchenau (Alismataceae).
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 275, DOI: 10.5281/zenodo.291971