cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
32246: Working from Home
Creators: name: Project, Lockdown2020 and Beyond
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 479999
subject: Other language, communication and culture not elsewhere classified

description: 6.30, up and shower. Decide hair has 'to do' debate cutting fringe.
7am. No time for breakfast, out with dog for 90 min walk to get 8 of my 10 k steps in for the day. Drop in on disabled Mum and 'do' (chores) for her. At desk, half of the dining table, for 9am. Check diary and emails
10 stop for breakfast, 2 min porridge, eat it at 'desk'. Must change the table cloth, but that means moving clutter, move lap top to hide stain in case becomes visible in Team/ Zoom/ Blue Jeans meetings
c1pm join retired husband for lunch and attempt puzzles in today's paper.
Take a break at 4.45 for a tea and watching today's graphs from no 10. Check further emails and start to close down for the day. Usual day is very much more physical, now online meetings/phone calls/emails accompanied by too much chocolate and an expanding waistline.
Approximate Born-Infeld Effects on the Relativistic Hydrogen Spectrum
Creators: name: Franklin, J.
name: Garon, T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The Born-Infeld form of the hydrogen atom has a spectrum that can be used to determine the physical viability of the theory, and place an experimentally relevant bound on the single parameter found in it. We compute this spectrum using the relativistic Dirac equation, and a form of the Born-Infeld potential that approximates the self-field corrections of the electron. Using these together, we can establish that if the Born-Infeld nonlinear electrodynamics is to be physically relevant, it must contain a fundamental constant that is well below the original value proposed by Born. This work extends the original Schrodinger spectrum from Carley and Kiessling (2006) [1] for the self-field correction, and shows that using the Dirac equation introduces minor corrections - but also gives access to a range for the fundamental constant that is below that attainable from non-relativistic considerations.
description: to appear, Phys. Lett. A
Essays on economics of transport infrastructure : pricing, investment and competition
Creators: name: Wang, Kun
Publisher: name: University of British Columbia
Year: 2018

description: This dissertation focuses on three major topics in transportation. The first one is related to the seaports adaptation to climate change related disasters (Chapter 2). We investigate the disaster adaptation investments made by two landlord ports with each serving its captive markets while competing for a common hinterland. The impact of “Knightian uncertainty” of disaster occurrence on port adaptation investment is investigated. We also investigate the impacts of inter-port and intra-port competition and cooperation on the port adaptation investment. The second topic is related to competition between airlines and high-speed rail (HSR) (Chapter 3). We investigate, both theoretically and empirically, the effect of HSR speed on airline traffic and price, taking into account the degree of air-HSR service substitutability. We consider two countervailing effects of HSR speed on airlines, i.e., the “travel time” effect and the “safety” effect. A rare natural experiment in HSR speed reduction in China is used to empirically test the theoretical findings. The incident is a rare quasi-natural experiment of HSR speed change as it was forced by the government due to safety concern and implemented system-wide regardless of market heterogeneity. A difference-in-differences method is used for estimation of the HSR speed effect on airlines as well as for verification of the theoretical predictions. The last topic addresses two important issues in the air transport economics, aiming to provide new insights. In Chapter 4, we develop a structural discrete-choice model to study airline competition in Chinese domestic market, explicitly taking into account the potential effects of “legacy” regulation on airlines’ competition behavior. Finally, in Chapter 5, we explore the effect of airport congestion on airport’s concession revenue. We model and empirically test two countervailing effects of airport congestion on airport concession demand: namely a “dwell time” effect (passenger spends more, due to longer dwell time within the airport) and a “stress” effect (passenger spends less when he/she feels stressful because of the congestion). The implications on airport optimal pricing and social welfare are investigated.
Macbrideola argentea Nann.
Creators: name: Treviño-Zevallos, Italo
name: García-Cunchillos, Iván
name: Basanta, Diana Wrigley De
name: Lado, Carlos
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Protozoa
Mycetozoa
Myxomycetes
Stemonitidales
Stemonitidaceae
Macbrideola
Macbrideola argentea

description: 97. Macbrideola cf. argentea Nann. -Bremek. & Y. Yamam., Proc. Kon. Ned. Akad. Wetensch., C. 86(2): 228 (1983)
 Specimens examined. PERU. Ancash: Yungay, Yungay, Huascaran N.P., Llanganuco sector, Chinancocha lagoon, route AN-106, km 25,500, 3844 m, 9º04′41.6”S, 77º39′06.9”W, 19 Apr 2013, branches of Polylepis sp., Lado 22924a (MA-Fungi 95126), Lado 22926 (MA-Fungi 95130).
 Notes. Similar to some Lamproderma species due to the iridescent peridium, however, the hollow stalk base, as seen with transmitted light, relates this taxon to the genus Macbrideola. This material has persistent peridium and capillitium with pale anastomoses towards the surface. Uncertainty in the identification comes from the capillitium of the Peruvian material, without the few primary branches and anastomoses towards the periphery described in M. argentea (Singer et al. 2009). The prominent groups of warts on the spores of the species do not occur either in this material.
description: Published as part of Treviño-Zevallos, Italo, García-Cunchillos, Iván, Basanta, Diana Wrigley De & Lado, Carlos, 2023, Diversity of Myxomycetes from Peru Part III: The high Andes and the altiplano, pp. 1-92 in Phytotaxa 624 (1) on page 51, DOI: 10.11646/phytotaxa.624.1.1, http://zenodo.org/record/10150721
Thermal emittance measurements of a cesium potassium antimonide photocathode
Creators: name: Bazarov, Ivan
name: Cultrera, Luca
name: Bartnik, Adam
name: Dunham, Bruce
name: Karkare, Siddharth
name: Li, Yulin
name: Liu, Xianghong
name: Maxson, Jared
name: Roussel, William
Publisher: name: arXiv
Year: 2011
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Thermal emittance measurements of a CsK2Sb photocathode at several laser wavelengths are presented. The emittance is obtained with a solenoid scan technique using a high voltage dc photoemission gun. The thermal emittance is 0.56+/-0.03 mm-mrad/mm(rms) at 532 nm wavelength. The results are compared with a simple photoemission model and found to be in a good agreement.
description: APL 2011
Pilochrota brevidens Topsent 1896, n. sp.
Creators: name: Topsent, Émile
Publisher: name: Zenodo
Year: 1896
Subjects: Biodiversity
Taxonomy
Animalia
Porifera
Demospongiae
Tetractinellida
Ancorinidae
Pilochrota
Pilochrota brevidens

description: Pilochrota brevidens n. sp. PI. XXI, fig. 28. Le spécimen qui sert de type à cette espèce est, basée sur un amas de débris calcaires, une petite masse jaunâtre, globuleuse, de 2 mm. de diamètre à peine, à surface inégale, hispide, sans orifices apparents, mais déjà surmontée de quelques appendices gemmipares, avec bourgeons prêts à se détacher. L'exiguïté de sa taille peut laisser supposer que ses mégasclères n'ont pas les dimensions qu'ils seraient capables d'acquérir chez de plus gros individus; mais la forme de ses divers spicules se montre si constante dans toutes les parties du corps qu'il n'y a pas lieu d'admettre qu'elle changerait avec la croissance de l'Éponge. Par sa spiculation, cette Pilochrota se place au voisinage de P. Moseleyi, P. Lenclenfeldi, P. cingalensis, sans cependant se confondre avec aucune d'elles. Ce qui la caractérise, ce sont ses anatrioenes, qui ne ressemblent qu'à ceux de Anthastra oeruginosa. D'autre part, l'existence d'une seule sorte d'asters, à actines toujours tylotes, écarte toute velléité d'identification de ces deux Stellettides. Spiculation. I. Mégasclères: 1. Oxes. 2. Orthotrioenes à clades pointus se recourbant très vite pour s'étendre horizontalement; rhabdome, 500-700 ^; clades, 133 (u; corde du cladome, 270,u. 3. Anatrioenes à cladome petit, arrondi, formé de trois clades courts, épais, coniques, très vite recourbés pour devenir parallèles au rhabdome; rhabdome, 825,u; corde du cladome, 40,u; sagitta, 20 p seulement. IL Microsclères: 4. Chiasters sans centrum, à actines droites, grêles, linéaires, rugueuses sur leur longueur et renflées en un bouton à leur extrémité (tylotes), peu nombreuses (8 à 12), longues de 8 à 10 p.
description: Published as part of Topsent, Émile, 1896, Spongiaires de la baie d'Amboine. (Voyage de MM. M. Bedot et C. Pictet dans l'archipel Malais.), pp. 421-487 in Revue Suisse de Zoologie 4 (3) on pages 433-434, DOI: 10.5962/bhl.part.35507
CMB power spectra from cosmic strings: predictions for the Planck satellite and beyond
Creators: name: Bevis, Neil
name: Hindmarsh, Mark
name: Kunz, Martin
name: Urrestilla, Jon
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a significant improvement over our previous calculations of the cosmic string contribution to cosmic microwave background (CMB) power spectra, with particular focus on sub-WMAP angular scales. These smaller scales are relevant for the now-operational Planck satellite and additional sub-orbital CMB projects that have even finer resolutions. We employ larger Abelian Higgs string simulations than before and we additionally model and extrapolate the statistical measures from our simulations to smaller length scales. We then use an efficient means of including the extrapolations into our Einstein-Boltzmann calculations in order to yield accurate results over the multipole range 2 < l < 4000. Our results suggest that power-law behaviour cuts in for l > 3000 in the case of the temperature power spectrum, which then allows cautious extrapolation to even smaller scales. We find that a string contribution to the temperature power spectrum making up 10% of power at l=10 would be larger than the Silk-damped primary adiabatic contribution for l > 3500. Astrophysical contributions such as the Sunyaev-Zeldovich effect also become important at these scales and will reduce the sensitivity to strings, but these are potentially distinguishable by their frequency-dependence.
description: 18 pages, 16 figures
Metatrichia floriformis Nann.
Creators: name: Treviño-Zevallos, Italo
name: García-Cunchillos, Iván
name: Basanta, Diana Wrigley De
name: Lado, Carlos
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Protozoa
Mycetozoa
Myxomycetes
Trichiales
Trichiaceae
Metatrichia
Metatrichia floriformis

description: 98. Metatrichia floriformis (Schwein.) Nann. -Bremek., Proc. Kon. Ned. Akad. Wetensch., C. 88(1): 127 (1985)
 Specimen examined. PERU. Ancash: Carhuaz, Shilla, Huascaran N.P., Punta Olímpica, route AN-107, km 42,500, 4582 m, 9º07′22.7”S, 77º31′05.0”W, 21 Apr 2013, wood of Polylepis racemosa, Lado 23008 (MA-Fungi 95176).
description: Published as part of Treviño-Zevallos, Italo, García-Cunchillos, Iván, Basanta, Diana Wrigley De & Lado, Carlos, 2023, Diversity of Myxomycetes from Peru Part III: The high Andes and the altiplano, pp. 1-92 in Phytotaxa 624 (1) on page 51, DOI: 10.11646/phytotaxa.624.1.1, http://zenodo.org/record/10150721
Tetilla Ridleyi Sollas.
Creators: name: Topsent, Émile
Publisher: name: Zenodo
Year: 1896
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Geraniales
Francoaceae
Tetilla

description: Tetilla Ridleyi Sollas. PI. XVIII, fig. 3. Deux spécimens, malheureusement incomplets. Le plus beau présente, du côté supérieur, une face plane, plateau hirsute, gris, mesurant 35 et 40 mm. de largeur et percé, à peu près en son milieu, d'un orifice, probablement Poscule, non surélevé, large de 3 mm.; par-dessous, il s'est trouvé coupé en un tronçon conique avec lignes squelettiques rayonnantes entièrement à nu. L'autre spécimen, de 27 mm. de diamètre, est un peu plus bombé, plus irrégulier, du côté supérieur; il est également déchiré par-dessous. Je rapporte ces Éponges à l'espèce Tetilla Ridleyi Sollas, surtout à cause des sigmaspires. Ces microsclères ne mesurent en effet que 11 ju de longueur et affectent presque toujours la forme très simple d'un C, quelquefois avec l'un des bouts rejeté obliquement, rarement la forme d'une S; ils sont relativement épais (1 p) et se montrent finement rugueux sur leur bord externe. Ils rappellent de la sorte un peu, et en plus petit, les sigmaspires de T. japonica. Ce sont les seuls microsclères présents. Il existe des oxes, des protrisenes et des anatrisenes. Les oxes, droits et acérés, ont 2 mm,5 de longueur sur 30,u d'épaisseur; les clades des protrisenes atteignent 150^ de long; ceux des anatrisenes mesurent 70 à 90 fx; la corde des anatrisenes n'est pas inférieure à 90 $x. Je donne ces chiffres seulement à titre d'indications, car je ne crois pas que les dimensions des mégasclères des Tetilla, Craniella, etc. puissent servir de caractères spécifiques; elles dépendent sans doute de variations individuelles capables aussi d'augmenter ou de diminuer la protrusion de ces spicules, et de modifier la régularité de leur cladome. Distribution. Iles Glorieuses; Amboine.
description: Published as part of Topsent, Émile, 1896, Spongiaires de la baie d'Amboine. (Voyage de MM. M. Bedot et C. Pictet dans l'archipel Malais.), pp. 421-487 in Revue Suisse de Zoologie 4 (3) on pages 436-437, DOI: 10.5962/bhl.part.35507
High Accuracy Classification of Developmental Toxicants by In Vitro Tests of Human Neuroepithelial and Cardiomyoblast Differentiation
Creators: name: Seidel, Florian
name: Cherianidou, Anna
name: Kappenberg, Franziska
name: Marta, Miriam
name: Dreser, Nadine
name: Blum, Jonathan
name: Waldmann, Tanja
name: Blüthgen, Nils
name: Meisig, Johannes
name: Madjar, Katrin
name: Henry, Margit
name: Rotshteyn, Tamara
name: Scholtz-Illigens, Andreas
name: Marchan, Rosemarie
name: Edlund, Karolina
name: Leist, Marcel
name: Rahnenführer, Jörg
name: Sachinidis, Agapios
name: Hengstler, Jan Georg
Publisher: name: Humboldt-Universität zu Berlin
Year: 2022
Subjects: subject: alternative testing strategies
subject: in vitro test
subject: induced pluripotent stem cells
subject: developmental and reproductive toxicity
subject: drug screening
subject: toxicogenomics
subject: transcriptomics
subject: gene expression
subject: 570 Biologie
subject: 610 Medizin und Gesundheit

description: Human-relevant tests to predict developmental toxicity are urgently needed. A currently intensively studied approach makes use of differentiating human stem cells to measure chemically-induced deviations of the normal developmental program, as in a recent study based on cardiac differentiation (UKK2). Here, we (i) tested the performance of an assay modeling neuroepithelial differentiation (UKN1), and (ii) explored the benefit of combining assays (UKN1 and UKK2) that model different germ layers. Substance-induced cytotoxicity and genome-wide expression profiles of 23 teratogens and 16 non-teratogens at human-relevant concentrations were generated and used for statistical classification, resulting in accuracies of the UKN1 assay of 87–90%. A comparison to the UKK2 assay (accuracies of 90–92%) showed, in general, a high congruence in compound classification that may be explained by the fact that there was a high overlap of signaling pathways. Finally, the combination of both assays improved the prediction compared to each test alone, and reached accuracies of 92–95%. Although some compounds were misclassified by the individual tests, we conclude that UKN1 and UKK2 can be used for a reliable detection of teratogens in vitro, and that a combined analysis of tests that differentiate hiPSCs into different germ layers and cell types can even further improve the prediction of developmental toxicants.
An H-alpha nuclear spiral structure in the E0 active galaxy Arp102B
Creators: name: Fathi, Kambiz
name: Axon, David
name: Storchi-Bergmann, Thaisa
name: Kharb, Preeti
name: Robinson, Andrew
name: Marconi, Alessandro
name: Maciejewski, Witold
name: Capetti, Alessandro
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We report the discovery of a two-armed mini-spiral structure within the inner kiloparsec of the E0 LINER/Seyfert 1 galaxy Arp102B. The arms are observed in H-alpha emission and located East and West of the nucleus, extending up to about 1 kpc from it. We use narrow-band imaging from the Hubble Space Telescope Advanced Camera for Surveys, in combination with archival VLA radio images at 3.6 and 6 cm to investigate the origin of the nuclear spiral. From the H-alpha luminosity of the spiral, we obtain an ionized gas mass of the order of one million solar masses. One possibility is that the nuclear spiral represents a gas inflow triggered by a recent accretion event which has replenished the accretion disk, giving rise to the double-peaked emission-line profiles characteristic of Arp102B. However, the radio images show a one-sided curved jet which correlates with the eastern spiral arm observed in the H-alpha image. A published milliarcsecond radio image also shows one-sided structure at position angle about 40 degrees, approximately aligned with the inner part of the eastern spiral arm. The absence of a radio counter-part to the western spiral arm is tentatively interpreted as indicating that the jet is relativistic, with an estimated speed of 0.45c. Estimates of the jet kinetic energy and the ionizing luminosity of the active nucleus indicate that both are capable of ionizing the gas along the spiral arms. We conclude that, although the gas in the nuclear region may have originated in an accretion event, the mini-spiral is most likely the result of a jet-cloud interaction rather than an inflowing stream.
description: 9 pages, 5 figures, accepted for publication in ApJ
Unusual signatures of the ferromagnetic transition in the heavy Fermion compound UMn$_2$Al$_{20}$
Creators: name: Wang, C. H.
name: Lawrence, J. M.
name: Bauer, E. D.
name: Kothapalli, K.
name: Gardner, J. S.
name: Ronning, F.
name: Gofryk, K.
name: Thompson, J. D.
name: Nakotte, H.
name: Trouw, F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Magnetic susceptibility results for single crystals of the new cubic compounds UT$_2$Al$_{20}$ (T=Mn, V, and Mo) are reported. Magnetization, specific heat, resistivity, and neutron diffraction results for a single crystal and neutron diffraction and inelastic spectra for a powder sample are reported for UMn$_2$Al$_{20}$. For T = V and Mo, temperature independent Pauli paramagnetism is observed. For UMn$_2$Al$_{20}$, a ferromagnetic transition is observed in the magnetic susceptibility at $T_c$ = 20 K. The specific heat anomaly at $T_c$ is very weak while no anomaly in the resistivity is seen at $T_c$. We discuss two possible origins for this behavior of UMn$_2$Al$_{20}$: moderately small moment itinerant ferromagnetism, or induced local moment ferromagnetism.
description: 5 pages, 5 figures, to be published in Phys. rev. B
Decontamination of rough implant surfaces in vitro using glycine powder air polishing
Creators: name: Leung, Kyla Elizabeth Karr Yee
Publisher: name: University of British Columbia
Year: 2018

description: Objectives: The prevalence of peri-implantitis and subsequent failure of implants continues to rise. The majority of cases are bacterial in etiology. In peri-implantitis, the subsequent bone loss around dental implants exposes their micro-roughened surfaces to bacterial colonization, further aggravating inflammation, bone loss and progression of disease. The challenge of peri-implantitis treatment is the complete decontamination of roughened implant surfaces once colonized with a biofilm. Many chemical agents are not effective in decontamination of the rough-surface implants with mature biofilms. Therefore, we examined if air-flow with glycine (AFG) would be effective in decontamination of implants with mature subgingival mature biofilms. Methods: SLA® (sand-blasted acid-etched) titanium discs were inoculated with dental plaque and anaerobically incubated at 37°C for 21 days to allow for the formation of a structurally mature oral biofilm on the disc surface. Discs were then separated into different treatment groups: AFG with or without the powder and with or without prior rinsing with 0.9% sterile saline. Control groups included no saline rinse, single rinse and double rinse controls. For assessment of decontamination, discs were imaged, and bacterial cells counted, under a scanning electron microscope (SEM) at 5000X magnification. Results: The no-rinse control group contained multi-species undisrupted biofilm. Saline rinsing removed most of the biofilm except the rough-surface-associated microorganisms. Numerous cocci and some rods remaining on the pits of the SLA® surface. AFG without the powder was not effective in decontamination of the rough SLA® surface. However, AFG with the powder produced practically clean SLA® surfaces. In addition, prior rinsing with saline was not necessary for this effect. Conclusions: AFG appears be an effective method to decontaminate mature biofilm contaminated implant surfaces when used directly on the contaminated implant surface.
Reply to "Comment on 'Ensemble Kalman filter with the unscented transform'"
Creators: name: Luo, Xiaodong
name: Moroz, Irene M.
name: Hoteit, Ibrahim
Publisher: name: arXiv
Year: 2010
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: This is a reply to the comment of Dr Sakov on the work "Ensemble Kalman filter with the unscented transform" of Luo and Moroz (2009).
description: To apprea in Physica D
Planetary nebulae in the elliptical galaxy NGC 821: kinematics and distance determination
Creators: name: Teodorescu, A. M.
name: Mendez, R. H.
name: Bernardi, F.
name: Riffeser, A.
name: Kudritzki, R. P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Using a slitless spectroscopy method with the 8.2 m Subaru telescope and its FOCAS Cassegrain spectrograph, we have increased the number of planetary nebula (PN) detections and PN velocity measurements in the flattened elliptical galaxy NGC 821. A comparison with the detections reported previously by the Planetary Nebula Spectrograph (PN.S) group indicates that we have confirmed most of their detections. The velocities measured by the two groups, using different telescopes, spectrographs and slitless techniques, are in good agreement. We have built a combined sample of 167 PNs and have confirmed the keplerian decline of the line-of-sight velocity dispersion reported previously. We also confirm misaligned rotation from the combined sample. A dark matter halo may exist around this galaxy, but it is not needed to keep the PN velocities below the local escape velocity as calculated from the visible mass. We have measured the m(5007) magnitudes of 145 PNs and produced a statistically complete sample of 40 PNs in NGC 821. The resulting PN luminosity function (PNLF) was used to estimate a distance modulus of 31.4 mag, equivalent to 19 Mpc. We also estimated the PN formation rate. NGC 821 becomes the most distant galaxy with a PNLF distance determination. The PNLF distance modulus is smaller than the surface brightness fluctuation (SBF) distance modulus by 0.4 mag. Our kinematic information permits to rule out the idea that a shorter PNLF distance could be produced by the contamination of the PNLF by background galaxies with emission lines redshifted into the on-band filter transmission curve.
description: Accepted for publication in ApJ; 16 figures
32255: Lockdown in college accommodation - GAB family
Creators: name: Project, Lockdown2020 and Beyond
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 479999
subject: Other language, communication and culture not elsewhere classified

description: I am a biochemistry 3rd year and following the lockdown arrangements for Trinity Term, my exams got postponed till next year. Nonetheless, I decided to stay in Oxford for TT and live in off-site college accommodation rather than returning at home. I was extremely lucky to spend my lockdown with three of my friends who also decided to stay in Oxford and now I can comfortably call them my "lockdown family" who I will remember for many years to come. Over the past three months they were the people who supported me the most and I grew so close to while dealing with feelings of homesickness, loss of motivation and restlessness. They helped me maintain a routine and were always there as a welcoming face or someone to have dinner with and chat. They made this lockdown as good as it could be and an extremely valuable experience that helped me grow as a person. Two of my friends had their finals this term and being there for them helped to get my mind of things and in holding each other accountable we managed to create a routine, which I found to be extremely important during lockdown. A typical day usually had a slow start in the morning and some work ("light revision" as I like to call it because I had not much else to do apart from some tutorial work). As many other people during the lockdown I took up baking and running to stay busy which was a good opportunity to explore Oxford outside the usual places I visit during term. Another habit I tried to maintain was afternoon Skype calls with mum to fight the homesickness and to keep in touch with things happening outside the Oxford bubble. The evenings were usually the best part of lockdown as they started with quick dinners which devolved into 4-hour long catch up sessions in one of our kitchens playing games of would you rather and making tik toks.
Nonparametric tests of the Markov hypothesis in continuous-time models
Creators: name: Aït-Sahalia, Yacine
name: Fan, Jianqing
name: Jiang, Jiancheng
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: We propose several statistics to test the Markov hypothesis for $β$-mixing stationary processes sampled at discrete time intervals. Our tests are based on the Chapman--Kolmogorov equation. We establish the asymptotic null distributions of the proposed test statistics, showing that Wilks's phenomenon holds. We compute the power of the test and provide simulations to investigate the finite sample performance of the test statistics when the null model is a diffusion process, with alternatives consisting of models with a stochastic mean reversion level, stochastic volatility and jumps.
description: Published in at http://dx.doi.org/10.1214/09-AOS763 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Metatrichia floripara Rammeloo, Icon. Mycol.
Creators: name: Treviño-Zevallos, Italo
name: García-Cunchillos, Iván
name: Basanta, Diana Wrigley De
name: Lado, Carlos
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Protozoa
Mycetozoa
Myxomycetes
Trichiales
Trichiaceae
Metatrichia
Metatrichia floripara

description: 99. Metatrichia floripara (Rammeloo) Rammeloo, Icon. Mycol. 1, pl. 47 (1984)
 Specimen examined. PERU. Huancavelica: Hauytara, Pilpichaca, route PE-28A, km 208, 10 km west of Licapa, 4020 m, 13º24′18”S, 74º53′54”W, 23 Apr 2017, leaves of Puya raimondii, Lado 25103 (MA-Fungi 96291).
description: Published as part of Treviño-Zevallos, Italo, García-Cunchillos, Iván, Basanta, Diana Wrigley De & Lado, Carlos, 2023, Diversity of Myxomycetes from Peru Part III: The high Andes and the altiplano, pp. 1-92 in Phytotaxa 624 (1) on page 51, DOI: 10.11646/phytotaxa.624.1.1, http://zenodo.org/record/10150721
Paraglacial landscape evolution in a rapidly deglaciating environment : a case study of Taan Fjord, Southeast Alaska, USA
Creators: name: Williams, Haley
Publisher: name: University of British Columbia
Year: 2018

description: The rapid thinning and retreat of Tyndall Glacier in Taan Fjord in Southeast Alaska has exposed 8 fluvial tributary watersheds to fast-acting paraglacial denudation processes. An average base-level fall of ~400 m has resulted in increased sediment yields and basin-averaged erosion rates in the watersheds over the first decades following the exposure of their outlets to the ocean. We used structure from motion photogrammetry to reconstruct the rate of surface thinning of Tyndall Glacier since 1957 and the rate of base-level fall for the tributaries. We modelled each fan-delta to obtain a minimum estimate of total sediment volume evacuated from each watershed and used geometric relations to determine sediment yields and erosion rates for each tributary through time. Between 1969 and 2014, the tributary basins contributed 165.7 ± 16.0 million m³ of total sediment to the fjord, or double the amount of sediment contributed by Tyndall Glacier. On average, the tributaries eroded their watersheds at a rate of 36.0 ± 5.7 mm yr-¹ and yielded three times more sediment annually than the glacier at 4.3 ± 0.3 million m³ yr-¹. Base-level fall led to knickpoint formation in most watersheds with an average rate of migration exceeding 20 m yr-¹. Those tributaries that have had the most time to respond to base-level fall have passed their peak sediment yields that are expected during the paraglacial period and have experienced the greatest landscape relaxation since the retreat of Tyndall Glacier. In contrast, the tributaries that have experienced base-level fall most recently at the head of the fjord are eroding their watersheds at a rapid pace, indicating that they are in the throes of the highly dynamic paraglacial period. In addition to the small-magnitude unravelling of the tributary basins, a large tsunamigenic landslide occurred in the fjord in 2015. This event as well as the high sediment yields observed in the tributary basins highlight the potential hazards associated with paraglacial landscapes. These rapidly changing environments are becoming more important to study in order to understand the changes that might occur in glaciated regions as climate continues to warm and glaciers continue to retreat.
Spirastrella solida Ridley et Dendy.
Creators: name: Topsent, Émile
Publisher: name: Zenodo
Year: 1896
Subjects: Biodiversity
Taxonomy
Animalia
Porifera
Demospongiae
Clionaida
Spirastrellidae
Spirastrella
Spirastrella solida

description: Spirastrella solida Ridley et Dendy. Plusieurs fragments. Distribution. Iles Philippines; Amboine.
description: Published as part of Topsent, Émile, 1896, Spongiaires de la baie d'Amboine. (Voyage de MM. M. Bedot et C. Pictet dans l'archipel Malais.), pp. 421-487 in Revue Suisse de Zoologie 4 (3) on page 440, DOI: 10.5962/bhl.part.35507
Noise and seasonal effects on the dynamics of plant-herbivore models with monotonic plant growth functions
Creators: name: Kang, Yun
name: Armbruster, Dieter
Publisher: name: arXiv
Year: 2011
Subjects: subject: Dynamical Systems (math.DS)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Mathematics
subject: FOS: Biological sciences
subject: 37, 39, 92

description: We formulate general plant-herbivore interaction models with monotone plant growth functions (rates). We study the impact of monotone plant growth functions in general plant-herbivore models on their dynamics. Our study shows that all monotone plant growth models generate a unique interior equilibrium and they are uniform persistent under certain range of {parameters} values. However, if the attacking rate of herbivore is too small or the quantity of plant is not enough, then herbivore goes extinct. Moreover, these models lead to noise sensitive bursting which can be identified as a dynamical mechanism for almost periodic outbreaks of the herbivore infestation. Monotone and non-monotone plant growth models are contrasted with respect to bistability and crises of chaotic attractors.
description: 20 pages, 8 figures
Spirastrella decumbens Ridley.
Creators: name: Topsent, Émile
Publisher: name: Zenodo
Year: 1896
Subjects: Biodiversity
Taxonomy
Animalia
Porifera
Demospongiae
Clionaida
Spirastrellidae
Spirastrella
Spirastrella decumbens

description: Spirastrella decumbens Ridley. Quatre échantillons ou fragments. Distribution. Détroit de Torrès; îles Philippines; Amboine.
description: Published as part of Topsent, Émile, 1896, Spongiaires de la baie d'Amboine. (Voyage de MM. M. Bedot et C. Pictet dans l'archipel Malais.), pp. 421-487 in Revue Suisse de Zoologie 4 (3) on page 440, DOI: 10.5962/bhl.part.35507
Five feedback strategies for intensive care medicine trainees
Creators: name: Bearman, Margaret
name: Ajjawi, Rola
name: Castanelli, Damian
name: Crawford, Nicole
name: Indermaur Denniston, Charlotte
name: Hilder, Joanne
name: Mahoney, Paige
name: Woodward‐Kron, Robyn
name: Watling, Christopher J.
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 390110
subject: Medicine, nursing and health curriculum and pedagogy
classificationCode: 390402
subject: Education assessment and evaluation

description: Feedback in the ICU challenges supervisors and trainees, and they often have different views about what it is and what it means. These five strategies for trainees are drawn from a four-year research project to understand feedback in intensive care medicine. They are based on approaches that other trainees have found beneficial.
Amplitude-mode dynamics of polariton condensates
Creators: name: Brierley, R. T.
name: Littlewood, P. B.
name: Eastham, P. R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the stability of collective amplitude excitations in non-equilibrium polariton condensates. These excitations correspond to renormalized upper polaritons and to the collective amplitude modes of atomic gases and superconductors. They would be present following a quantum quench or could be created directly by resonant excitation. We show that uniform amplitude excitations are unstable to the production of excitations at finite wavevectors, leading to the formation of density-modulated phases. The physical processes causing the instabilities can be understood by analogy to optical parametric oscillators and the atomic Bose supernova.
description: 4 pages, 2 figures
ShinyTPs: Curate transformation products from text mining results
Creators: name: Palm, Emma
name: Chirsir, Parviel
name: Krier, Jessy
name: Schymanski, Emma
Publisher: name: Zenodo
Year: 2023
Subjects: ShinyTPs
transformation products
literature mining

description: Platform Presentation at SETAC Europe 2023, Dublin, 30 April - 4 May 2023 Presentation 3.12.T-02, EcoCen Room, 9:05 am Thursday 4 May.
title: Teaching Reproducibility to First Year College Students: Reflections From an Introductory Data Science Course
Creators: name: Bean, Brennan L
Publisher: name: Utah State University
Year: 2023

description: Access the online Pressbooks version of this article here.
Modern technology threatens traditional modes of classroom assessment by providing students with automated ways to write essays and take exams. At the same time, modern technology continues to expand the accessibility of computational tools that promise to increase the potential scope and quality of class projects. This paper presents a case study where students are asked to complete a “reproducible” final project in an introductory data science course using the R programming language. A reproducible project is one where an instructor can easily regenerate the results and conclusions from the submitted materials. Experiences in two small sections of this introductory class suggest that reproducible projects are feasible to implement with only a little increase in assessment difficulty. The sample assignment presented in this paper, along with some proposed adaptations for non-data science classes, provide a pattern for directly assessing a student’s analysis, rather than just the final results.
Scaled unscented transform Gaussian sum filter: theory and application
Creators: name: Luo, Xiaodong
name: Moroz, Irene M.
name: Hoteit, Ibrahim
Publisher: name: arXiv
Year: 2010
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: In this work we consider the state estimation problem in nonlinear/non-Gaussian systems. We introduce a framework, called the scaled unscented transform Gaussian sum filter (SUT-GSF), which combines two ideas: the scaled unscented Kalman filter (SUKF) based on the concept of scaled unscented transform (SUT), and the Gaussian mixture model (GMM). The SUT is used to approximate the mean and covariance of a Gaussian random variable which is transformed by a nonlinear function, while the GMM is adopted to approximate the probability density function (pdf) of a random variable through a set of Gaussian distributions. With these two tools, a framework can be set up to assimilate nonlinear systems in a recursive way. Within this framework, one can treat a nonlinear stochastic system as a mixture model of a set of sub-systems, each of which takes the form of a nonlinear system driven by a known Gaussian random process. Then, for each sub-system, one applies the SUKF to estimate the mean and covariance of the underlying Gaussian random variable transformed by the nonlinear governing equations of the sub-system. Incorporating the estimations of the sub-systems into the GMM gives an explicit (approximate) form of the pdf, which can be regarded as a "complete" solution to the state estimation problem, as all of the statistical information of interest can be obtained from the explicit form of the pdf ... This work is on the construction of the Gaussian sum filter based on the scaled unscented transform.
Neutral skyrmion configurations in the low-energy effective theory of spinor condensate ferromagnets
Creators: name: Cherng, R. W.
name: Demler, E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the low-energy effective theory of spinor condensate ferromagnets for the superfluid velocity and magnetization degrees of freedom. This effective theory describes the competition between spin stiffness and a long-ranged interaction between skyrmions, topological objects familiar from the theory of ordinary ferromagnets. We find exact solutions to the non-linear equations of motion describing neutral configurations of skyrmions and anti-skyrmions. These analytical solutions provide a simple physical picture for the origin of crystalline magnetic order in spinor condensate ferromagnets with dipolar interactions. We also point out the connections to effective theories for quantum Hall ferromagnets.
description: 13 pages, 7 figures
Spirastrella carnosa Topsent 1896, n. sp.
Creators: name: Topsent, Émile
Publisher: name: Zenodo
Year: 1896
Subjects: Biodiversity
Taxonomy
Animalia
Porifera
Demospongiae
Clionaida
Spirastrellidae
Spirastrella
Spirastrella carnosa

description: Spirastrella carnosa n. sp. Deux spécimens et des fragments. Éponge massive, amorphe, lobée ou aplatie, charnue, très souple, grise dans l'alcool. Surface irrégulière et comme froncée, très finement hispide. Ectosome spiculeux, envahi par des Oscillaires, et, malgré tout, semi-transparent, laissant apercevoir les pores et les canaux superficiels, sous l'aspect de petites taches ou de traînées plus sombres. Choanosome caverneux. Texture compacte. Oscules assez larges (l,5 de diamètre), peu nombreux, épars. L'un des spécimens, fixé sur une branche de Polypier, se découpe en trois ou quatre lobes arrondis, à peu près de la grosseur d'un pois et brièvement pédicellés. L'autre, brisé en deux morceaux, forme une grande plaque longue de 75 mm., haute de 20 mm. en moyenne, épaisse de 3 à 7 mm., la plus grande épaisseur s'observant sur son bord supérieur où s'ouvrent deux ou trois oscules. Il n'a pas été recueilli de support, mais une dépression verticale en gouttière sur le milieu de l'une des faces semble indiquer que l'Eponge était attachée suivant cette ligne à quelque corps cylindrique grêle. Simulation. I. Mégasclères: 1. Tijlostyles généralement courbes, à tête bien marquée, ovoïde ou subtrilobée en coupe optique, c'est-à-dire plus large dans sa moitié en continuité avec la tige que dans sa moitié basilaire libre; la tige, légèrement fusiforme, s'atténue progressivement en une pointe acérée. Assez inégaux, ils mesurent le plus souvent 330^ de longueur sur 6 à 8 ^ d'épaisseur en leur milieu. IL Microsclères: 2. Spirasters pour la plupart très petites (6 à 8 y. seulement) et ornées d'épines acérées, grêles, disposées sans ordre ; quelques-unes, dans l'intérieur du corps, atteignent 16 y. de longueur, deviennent assez grosses et sont sinueuses et épineuses aux angles. A noter que les spirasters sont très peu nombreuses, même dans l'ectosome, de sorte que, à moins d'un examen attentif, l'Éponge pourrait passer pour un Suberites. Spirastrella carnosa se distingue des autres espèces du genre par sa mollesse, par la faiblesse relative de ses tylostyles, par la rareté et l'exiguïté de ses spirasters. Chez d'autres Spirastrella les spirasters superficielles restent parfois très petites aussi, mais alors elles se montrent plutôt verruqueuses que franchement épineuses comme c'est ici le cas.
description: Published as part of Topsent, Émile, 1896, Spongiaires de la baie d'Amboine. (Voyage de MM. M. Bedot et C. Pictet dans l'archipel Malais.), pp. 421-487 in Revue Suisse de Zoologie 4 (3) on pages 441-442, DOI: 10.5962/bhl.part.35507
Oligonema flavidum Peck, Annual Rep.
Creators: name: Treviño-Zevallos, Italo
name: García-Cunchillos, Iván
name: Basanta, Diana Wrigley De
name: Lado, Carlos
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Oligonema
Oligonema flavidum

description: 100. Oligonema cf. flavidum (Peck) Peck, Annual Rep. New York State Mus. 31: 42 (1878)
 Specimen examined. PERU. Arequipa: Caylloma, Caylloma-Chivay community, route AR-109 to Chivay, km 57, 4823 m, 15º44′00”S, 71º35′45”W, 23 Apr 2016, leaves of Pycnophyllum sp., Lado 24711 (MA-Fungi 95970).
 Notes. The material studied matched the description of the species according to Nannenga-Bremekamp (1991) and Martin & Alexopoulos (1969) yet differed by having more abundant capillitium and spores of larger diameter, 15–18 µm in the Peruvian material vs. 13–15 µm (Martin & Alexopoulos 1969) or 13–16 µm (Nannenga-Bremekamp 1991). Since only one collection matched this description, we cannot ascertain the stability of this character in the area studied.
description: Published as part of Treviño-Zevallos, Italo, García-Cunchillos, Iván, Basanta, Diana Wrigley De & Lado, Carlos, 2023, Diversity of Myxomycetes from Peru Part III: The high Andes and the altiplano, pp. 1-92 in Phytotaxa 624 (1) on page 51, DOI: 10.11646/phytotaxa.624.1.1, http://zenodo.org/record/10150721
A Very Close Binary Black Hole in a Giant Elliptical Galaxy 3C 66B and its Black Hole Merger
Creators: name: Iguchi, Satoru
name: Okuda, Takeshi
name: Sudou, Hiroshi
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent observational results provide possible evidence that binary black holes (BBHs) exist in the center of giant galaxies and may merge to form a supermassive black hole in the process of their evolution. We first detected a periodic flux variation on a cycle of $93\pm1$ days from the 3-mm monitor observations of a giant elliptical galaxy \object{3C 66B} for which an orbital motion with a period of $1.05\pm0.03$ years had been already observed. The detected signal period being shorter than the orbital period can be explained by taking into consideration the Doppler-shifted modulation due to the orbital motion of a BBH. Assuming that the BBH has a circular orbit and that the jet axis is parallel to the binary angular momentum, our observational results demonstrate the presence of a very close BBH that has the binary orbit with an orbital period of $1.05\pm0.03$ years, an orbital radius of $(3.9\pm1.0) \times 10^{-3}$ pc, an orbital separation of $(6.1^{+1.0}_{-0.9}) \times 10^{-3}$ pc, the larger black hole mass of $(1.2^{+0.5}_{-0.2}) \times 10^9$ $M_{\sun}$, and the smaller black hole mass of $(7.0^{+4.7}_{-6.4}) \times 10^8$ $M_{\sun}$. The BBH decay time of $(5.1^{+60.5}_{-2.5})\times 10^2$ years provides evidence for the occurrence of black hole mergers. This Letter will demonstrate the interesting possibility of black hole collisions to form a supermassive black hole in the process of evolution, one of the most spectacular natural phenomena in the universe.
description: 5 pages, 4 figures. Accepted for publication in The Astrophysical Journal Letters
On Oblivious PTAS's for Nash Equilibrium
Creators: name: Daskalakis, Constantinos
name: Papadimitriou, Christos H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Computation (stat.CO)
subject: FOS: Computer and information sciences
subject: F.2.0

description: If a game has a Nash equilibrium with probability values that are either zero or Omega(1) then this equilibrium can be found exhaustively in polynomial time. Somewhat surprisingly, we show that there is a PTAS for the games whose equilibria are guaranteed to have small-O(1/n)-values, and therefore large-Omega(n)-supports. We also point out that there is a PTAS for games with sparse payoff matrices, which are known to be PPAD-complete to solve exactly. Both algorithms are of a special kind that we call oblivious: The algorithm just samples a fixed distribution on pairs of mixed strategies, and the game is only used to determine whether the sampled strategies comprise an eps-Nash equilibrium; the answer is yes with inverse polynomial probability. These results bring about the question: Is there an oblivious PTAS for Nash equilibrium in general games? We answer this question in the negative; our lower bound comes close to the quasi-polynomial upper bound of [Lipton, Markakis, Mehta 2003]. Another recent PTAS for anonymous games is also oblivious in a weaker sense appropriate for this class of games (it samples from a fixed distribution on unordered collections of mixed strategies), but its runtime is exponential in 1/eps. We prove that any oblivious PTAS for anonymous games with two strategies and three player types must have 1/eps^c in the exponent of the running time for some c>1/3, rendering the algorithm in [Daskalakis 2008] essentially optimal within oblivious algorithms. In contrast, we devise a poly(n) (1/eps)^O(log^2(1/eps)) non-oblivious PTAS for anonymous games with 2 strategies and any bounded number of player types. Our algorithm is based on the construction of a sparse (and efficiently computable) eps-cover of the set of all possible sums of n independent indicators, under the total variation distance. The size of the cover is poly(n) (1/ eps^{O(log^2 (1/eps))}.
description: extended version of paper of the same title that appeared in STOC 2009
Conrad Ferdinand Meyer
Creators: name: (:Unkn) Unknown
Publisher: name: Zentralbibliothek Zürich
Year: 1898
Subjects: subject: 700 Künste, Bildende und angewandte Kunst
subject: 830 Literaturen germanischer Sprachen; Deutsche Literatur
subject: 920 Biografien, Genealogie, Insignien
subject: Nachruf
subject: Meyer, Conrad Ferdinand
subject: Zürich
subject: Kilchberg (Kanton Zürich)

description: Enthält: diverse Nachrufe aus Zeitungen