cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Neutral and cationic free-space oxygen-silicon clusters SiOn (1 < n <= 6), and possible relevance to crystals of SiO2 under pressure
Creators: name: Forte, G.
name: Angilella, G. G. N.
name: Pittalà, V.
name: March, N. H.
name: Pucci, R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Motivated by the theoretical study of Saito and Ono (2011) on three crystalline forms of SiO2 under pressure, quantum-chemical calculations on various free-space clusters of SiOn and GeOn for 1 < n <= 6 are reported here. Both neutral and cationic clusters have been examined, for both geometry and equilibrium bond lengths. Coupled clusters and correlation-corrected MP2 calculations are presented. For the cations, we emphasize especially the structural distortions occurring in removing degeneracies.
description: Phys. Lett. A, to appear
Accelerated spatial approximations for time discretized stochastic partial differential equations
Creators: name: Hall, Eric Joseph
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: The present article investigates the convergence of a class of space-time discretization schemes for the Cauchy problem for linear parabolic stochastic partial differential equations (SPDEs) defined on the whole space. Sufficient conditions are given for accelerating the convergence of the scheme with respect to the spatial approximation to higher order accuracy by an application of Richardson's method. This work extends the results of Gyöngy and Krylov [SIAM J. Math. Anal., 42 (2010), pp. 2275--2296] to schemes that discretize in time as well as space.
description: 29 pages
Quantitative palynological analyses of Albian-Cenomanian (Lower to Upper Cretaceous) strata in the Sverdrup Basin: Insights into paleoecology, paleoclimatology and palynostratigraphy
Creators: name: Sulphur, Kyle
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Paleoecology
subject: Palynology
subject: Cretaceous
subject: Biostratigraphy
subject: Paleoecology
subject: Multivariate Statistics

description: Multivariate statistical analyses of terrestrial palynomorphs from Albian to Cenomanian (Lower to Upper Cretaceous), Sverdrup Basin strata reveal a landscape with wet lowlands inhabited by Pteridophytina and Bryophyta, with cooler, moist uplands inhabited by a variety of conifer plants. A humid and temperate climate prevailed at this time. Three sites from eastern Sverdrup Basin contain similar palynofloras with long-ranging taxa, but quantitative palynological analyses reveal important differences in relative abundances between localities. A total of eleven early angiosperm pollen were recovered, providing further evidence of a delay in the dispersal and diversification of angiosperms into the Sverdrup Basin relative to more southern locations. This latitudinal diachroneity may potentially be due to paleogeographic barriers, such as, the Arctic Ocean, the extent of the Western Interior Seaway, or due to limited insect pollination dispersal strategies.
Shortest Path Computation with No Information Leakage
Creators: name: Mouratidis, Kyriakos
name: Yiu, Man Lung
Publisher: name: arXiv
Year: 2012
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Shortest path computation is one of the most common queries in location-based services (LBSs). Although particularly useful, such queries raise serious privacy concerns. Exposing to a (potentially untrusted) LBS the client's position and her destination may reveal personal information, such as social habits, health condition, shopping preferences, lifestyle choices, etc. The only existing method for privacy-preserving shortest path computation follows the obfuscation paradigm; it prevents the LBS from inferring the source and destination of the query with a probability higher than a threshold. This implies, however, that the LBS still deduces some information (albeit not exact) about the client's location and her destination. In this paper we aim at strong privacy, where the adversary learns nothing about the shortest path query. We achieve this via established private information retrieval techniques, which we treat as black-box building blocks. Experiments on real, large-scale road networks assess the practicality of our schemes.
description: VLDB2012
The mechanism of serine protease-mediated barrier enhancement in intestinal epithelial cells
Creators: name: Lahey, Kelcie
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: Inflammatory Bowel Disease
subject: intestinal epithelial barrier
subject: protease

description: Apical exposure of the intestinal epithelium to serine proteases results in an increase in transepithelial electrical resistance (TER); however the underlying mechanism(s) governing this response are unknown. We aimed to determine the requirement for proteolytic activity, epidermal growth factor receptor (EGFR) activation, and downstream intracellular signalling in initiating and maintaining enhanced barrier function following protease treatment. Apical stimulation with trypsin and matriptase significantly increases TER of polarized intestinal epithelial monolayers. Proteolytic activity by proteases is required to initiate and maintain protease-mediated increased TER. Matrix metalloproteinase (MMP)-independent EGFR activation is essential to the sustained phase of the protease response; Src kinases may mediate EGFR activation. Phosphoinositide-3 kinase (PI3K) and ERK1/2 signalling are important in reaching a maximal increase in TER following protease stimulation; however, their upstream activators are yet to be determined. Protein kinase C (PKC)ζ activity is important for epithelial barrier maintenance but likely not involved in protease-mediated increased TER. Our data show a requirement for ongoing proteolytic activity, EGFR transactivation, as well as downstream PI3-K and ERK1/2 signalling in protease-mediated barrier enhancement of intestinal epithelial cells. The enhanced barrier function mediated by proteases may contribute to novel therapeutic targets for intestinal disorders characterized by disrupted epithelial barrier function.
1-DREAM: 1D Recovery, Extraction and Analysis of Manifolds in noisy environments
Creators: name: Canducci, Marco
name: Awad, Petra
name: Taghribi, Abolfazl
name: Mohammadi, Mohammad
name: Mastropietro, Michele
name: De Rijcke, Sven
name: Peletier, Reynier
name: Smith, Rory
name: Bunte, Kerstin
name: Tino, Peter
Publisher: name: arXiv
Year: 2025
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences
subject: G.3; I.2; I.5; J.2

description: Filaments are ubiquitous in astronomical data sets. Be it in particle simulations or observations, filaments are always tracers of a perturbation in the equilibrium of the studied system and hold essential information on its history and future evolution. However, the recovery of such structures is often complicated by the presence of a large amount of background and transverse noise in the observation space. While the former is generally detrimental to the analysis, the latter can be attributed to measurement errors and it can hold essential information about the structure. To further complicate the scenario, 1D manifolds (filaments) are generally non-linear and their geometry difficult to extract and model. In order to study hidden manifolds within the dataset, particular care has to be devoted to background noise removal and transverse noise modelling, while still maintaining accuracy in the recovery of their geometrical structure. We propose 1-DREAM: a toolbox composed of five main Machine Learning methodologies whose aim is to facilitate manifold extraction in such cases. Each methodology has been designed to address issues when dealing with complicated low-dimensional structures convoluted with noise and it has been extensively tested in previously published works. In this work all methodologies are presented in detail, joint within a cohesive framework and demonstrated for three interesting astronomical cases: a simulated jellyfish galaxy, a filament extracted from a simulated cosmic web and the stellar stream of Omega-Centauri as observed with the GAIA DR2. Two newly developed visualization techniques are also proposed, that take full advantage of the results obtained with 1-DREAM. The code is made publicly available to benefit the community. The controlled experiments on a purposefully built data set prove the accuracy of the pipeline in recovering the hidden structures.
Thermal entanglement between non-nearest-neighbor spins on fractal lattices
Creators: name: Xu, Yu-Liang
name: Wang, Lu-Shun
name: Kong, Xiang-Mu
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate thermal entanglement between two non-nearest-neighbor sites in ferromagnetic Heisenberg chain and on fractal lattices by means of the decimation renormalization-group (RG) method. It is found that the entanglement decreases with increasing temperature and it disappears beyond a critical value T_{c}. Thermal entanglement at a certain temperature first increases with the increase of the anisotropy parameter Δ and then decreases sharply to zero when Δ is close to the isotropic point. We also show how the entanglement evolves as the size of the system L becomes large via the RG method. As L increases, for the spin chain and Koch curve the entanglement between two terminal spins is fragile and vanishes when L\geq17, but for two kinds of diamond-type hierarchical (DH) lattices the entanglement is rather robust and can exist even when L becomes very large. Our result indicates that the special fractal structure can affect the change of entanglement with system size.
description: 10 pages, 6 figures
Experimental study of imbibition mechanisms in heavy oil waterflooding using etched glass micromodel
Creators: name: Mei, Songyi
Publisher: name: Graduate Studies
Year: 2012
Subjects: subject: Engineering--Petroleum
subject: Heavy Oil Waterflooding
subject: Imbibition Mechanism
subject: Experimental study
subject: Micromodel

description: Waterflooding in heavy oil reservoirs has an almost 50 years history in western Canada, but its recovery mechanisms, especially in the situation of a high oil to water viscosity ratio, are still not well understood. This thesis studied the water imbibition mechanisms in the process of heavy oil waterflooding, and their effects on oil recovery using a glass made micromodel. In a water-wet environment, waterflooding (water displacing oil) represents a process of water imbibition. This water imbibition experimental study was conducted with varying water injection rates and oil viscosities. The effects of time, viscosity ratio and water injection rate on imbibition rate were studied. The recovery factor was proportional to the square root of time, and it also had a definite relationship with oil viscosity even though it was not linear. The effects of injection rate on imbibition rate were complicated. Images of the imbibition process were recorded and analyzed. Water broke through quickly because of water fingering. A significant amount of oil was produced during the post-breakthrough period under high water cuts. In the cases of low rate water injection, water imbibed into the original oil region perpendicularly to the water channel. At this stage, capillary forces were the key factor. Water film thickening, snap-off and oil refilling were the main mechanisms that made water imbibition work. Emulsification was also another important mechanism observed, with W/O emulsions primarily being formed.
Altitude Limits for Rotating Vector Model Fitting of Pulsar Polarization
Creators: name: Craig, H. A.
name: Romani, Roger W.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Traditional pulsar polarization sweep analysis starts from the point dipole rotating vector model (RVM) approximation. If augmented by a measurement of the sweep phase shift, one obtains an estimate of the emission altitude (Blaskiewicz, Cordes, & Wasserman). However, a more realistic treatment of field line sweepback and finite altitude effects shows that this estimate breaks down at modest altitude ~ 0.1R_{LC}. Such radio emission altitudes turn out to be relevant to the young energetic and millisecond pulsars that dominate the γ-ray population. We quantify the breakdown height as a function of viewing geometry and provide simple fitting formulae that allow observers to correct RVM-based height estimates, preserving reasonable accuracy to R ~ 0.3R_{LC}. We discuss briefly other observables that can check and improve height estimates.
Models of the Compact Jet in GRS 1915+105
Creators: name: Punsly, Brian
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In this article, models are constructed of the compact jet in GRS 1915+105 during an epoch of optimal data capture. On April 02, 2003, the object was observed in the hard X-ray/soft gamma ray band (INTEGRAL), hard X-ray band (RXTE), near IR (ESO/New Technology Telescope) and the VLBA (8.3 GHz and 15 GHz). The source was in a so-called "high plateau state." The large radio flux provides high signal to noise ratios in the radio images. Thus, one can image the jet out to large distances ($ > 10^{15}$ cm). This combined with the broadband coverage make this epoch the best suited for modeling the jet. The parametric method developed in the papers \cite{ghi85,ghi89,ghi96,sam97} that has been successfully utilized in the realm of extragalactic radio jets is implemented. The basic model is one where external inverse Compton (EIC) scattering of accretion disk photons by jet plasma provides the hard X-ray powerlaw. Unlike AGN jets, it is found that the radio jet must be highly stratified in the transverse direction in order to produce the observed surface brightness distribution in the radio images. Various jet models are considered. The jet power is $Q \approx 3-4 \times 10^{38}$ ergs/sec if the hard X-ray powerlaw luminosity is from EIC in the jet and $Q \approx 2 - 9 \times 10^{37}$ ergs/sec if the X-rays are emitted from the accretion disk corona. These estimates indicate that the jet power can be as high as 60% of the total X-ray luminosity.
description: To appear in MNRAS
The Wire and the Democracy of Fiction
Creators: name: Hudelet, Ariane
Publisher: name: Series - International Journal of TV Serial Narratives
Year: 2018
Subjects: The Wire; Fiction; Realism; David Simon; Mise-en-scène

description: Beyond its oft-praised "realism", The Wire (HBO, 2002-2008) – precisely because of its closeness to non-fiction – explores the modalities and functionalities of fiction and investigates what fiction is and what fiction can do. The series above all reflects on the ethical stakes of fiction-making. In the game it establishes with its non-fiction antecedents, and in its meta-narrative story arc in season 5, the show reflects on the fictional process and on the different media which filter reality to try and represent it. This article analyzes how The Wire explores the moral implications of fiction-making and the different meanings of the term, from fiction as counter-fact, or counter-truth, to fiction as experimentation. Through the case study of the final season, we see how the series plays out its ambivalence toward fictional codes and advocates a mode of critical fictional representation as an alternative to the current, devious modes of safety policy and journalism. This article demonstrates how, by delegating fiction-making to characters as it does, more particularly in season 5, The Wire inscribes itself in what Jacques Rancière calls "fictional democracy".
description: Series - International Journal of TV Serial Narratives, Vol 4, No 2 (2018)
Panicum trichidiachne Doll 1877
Creators: name: Fernando O. Zuloaga
name: Diego Giraldo-Cañas
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Poales
Poaceae
Panicum
Panicum trichidiachne

description: 6-2. Panicum trichidiachne Döll,
 Fl. Bras. 2 (2): 339, pl. 49. 1877. Tipo: Brasil. Rio de Janeiro, 4 ene 1875, A. F. M. Glaziou 6979 (holotipo P!; isotipo US-81150!, fragmento ex P).
 Figs. 16, 17
 Plantas perennes. Cañas rastreras a decumbentes en la base, geniculadas y arraigadas en los nudos inferiores, luego ascendentes a erectas, 20-120 cm de altura, ramificadas; entrenudos cilíndricos a comprimidos, esparcidamente pilosos, con largos pelos blanquecinos adpresos, a glabros; nudos oscuros, cubiertos de pelos blanquecinos. Hojas con vainas 2-10 cm de largo, híspidas a glabrescentes, los márgenes cortamente pestañosos; lígulas membranáceo-ciliadas, 0.4-0.9 mm de largo; cuello oscuro, piloso; láminas ovado-lanceoladas a lanceoladas, 11-14(-17) x 1-2(-3) cm, planas, pseudopecioladas, de base angostada y asimétrica, pilosas a glabras en ambas superficies, los márgenes escabrosos, engrosados. Inflorescencia una panoja laxa, 7-14(-18) x 4-8(-11) cm; eje principal anguloso, escabroso, hirsuto a glabro, pulvínulos castaños, pilosos, ramas opuestas o alternas, divergentes del eje principal, desnudas en la base, ejes de las ramificaciones pilosos, dis- minuyendo la pilosidad hacia el ápice, espiguillas apretadas en las ramas sobre pedicelos escabrosos, cortos. Espiguillas elipsoides, 1.6-1.9(-2.2) x 0.8-1 mm, glabras, verdosas, gluma superior y lema inferior subiguales y con nervios marcados. Gluma inferior ovada, 0.3-0.5 mm de largo, enervia a 1-nervia, hialina, de ápice agudo. Gluma superior 5-7-nervia, nervio medio escabroso hacia su ápice. Lema inferior glumiforme, 5-nervia. Pálea inferior ausente. Flor inferior ausente. Antecio superior elipsoide, (1.3-)1.5-1.8 x 0.7-0.9 mm, pajizo, cubierto de largos pelos blanquecinos cilíndricos sobre la lema y la pálea superiores, papiloso, papilas simples distribuidas regularmente. Cariopsis ampliamente elipsoide, 1.1 x 0.8 mm; hilo punctiforme, embrión menos de la mitad del largo de la cariopsis.
 Hábitat y distribución. Ampliamente distribuida desde México y el Caribe hasta Paraguay y Argentina. Panicum trichidiachne en Colombia está en la región Andina, habitando en lugares húmedos y sombríos, desde 1000 hasta 2800 m de altitud.
 Especímenes representativos. Antioquia: municipio Jardín, vereda Las Manguitas, 18 km oeste de Jardín, Pohl 15545 (HUA). Caldas: municipio Salamina, about 6 km SE of Salamina on the road to Pácora, quebrada La Frisolita, 1440 m, 27 feb 1988, Clark 418 (MO). Valle del Cauca: E of the summit of the Western Cordillera, 15 km from Cali, s.f., Wood 4445 (K).
description: Published as part of Fernando O. Zuloaga & Diego Giraldo-Cañas, 2013, 30. Panicum, pp. 1-107 in Flora de Colombia 30 on pages 52-54, DOI: 10.5281/zenodo.259616
Modeling Virtual Organization Architecture with the Virtual Organization Breeding Methodology
Creators: name: Paszkiewicz, Zbigniew
name: Picard, Willy
Publisher: name: arXiv
Year: 2011
Subjects: subject: Other Computer Science (cs.OH)
subject: FOS: Computer and information sciences

description: While Enterprise Architecture Modeling (EAM) methodologies become more and more popular, an EAM methodology tailored to the needs of virtual organizations (VO) is still to be developed. Among the most popular EAM methodologies, TOGAF has been chosen as the basis for a new EAM methodology taking into account characteristics of VOs presented in this paper. In this new methodology, referred as Virtual Organization Breeding Methodology (VOBM), concepts developed within the ECOLEAD project, e.g. the concept of Virtual Breeding Environment (VBE) or the VO creation schema, serve as fundamental elements for development of VOBM. VOBM is a generic methodology that should be adapted to a given VBE. VOBM defines the structure of VBE and VO architectures in a service-oriented environment, as well as an architecture development method for virtual organizations (ADM4VO). Finally, a preliminary set of tools and methods for VOBM is given in this paper.
description: 9 pages, 4 figures
Metabolomic profile, anti-trypanosomal potential and molecular docking studies of Thunbergia grandifolia
Creators: name: El-Nashar, Heba A. S.
name: Sayed, Ahmed M.
name: El-Sherief, Hany A. M.
name: Rateb, Mostafa E.
name: Akil, Lina
name: Khadra, Ibrahim
name: Majrashi, Taghreed A.
name: Al-Rashood, Sara T.
name: Binjubair, Faizah A.
name: Hassab, Mahmoud A. El
name: Eldehna, Wagdy M.
name: Abdelmohsen, Usama Ramadan
name: Mostafa, Nada M.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: Trypanosomiasis is a protozoan disease transmitted via Trypanosoma brucei. This study aimed to examine the metabolic profile and anti-trypanosomal effect of methanol extract of Thunbergia grandifolia leaves. The liquid chromatography-high resolution electrospray ionisation mass spectrometry (LC-HRESIMS) revealed the identification of fifteen compounds of iridoid, flavonoid, lignan, phenolic acid, and alkaloid classes. The extract displayed a promising inhibitory activity against T. brucei TC 221 with MIC value of 1.90 μg/mL within 72 h. A subsequent in silico analysis of the dereplicated compounds (i.e. inverse docking, molecular dynamic simulation, and absolute binding free energy) suggested both rhodesain and farnesyl diphosphate synthase as probable targets for two compounds among those dereplicated ones in the plant extract (i.e. diphyllin and avacennone B). The absorption, distribution, metabolism, excretion, and toxicity (ADMET) profiling of diphyllin and avacennone were calculated accordingly, where both compounds showed acceptable drug-like properties. This study highlighted the antiparasitic potential of T. grandifolia leaves.
Environmental and biotic influences on the abundance and distribution of an introduced grass species : implications for management in the Okanagan Valley, British Columbia
Creators: name: Deane, Thomas James
Publisher: name: University of British Columbia
Year: 2010

description: Introduced plant species exert major influences on the structure and function of ecosystems, and are often implicated in biodiversity declines. The Eurasian annual cheatgrass, Bromus tectorum Linnaeus, has spread extensively in western North America since its introduction over 150 years ago; it extirpates native species, appears to have increased fire cycle periodicities, and provides cattle with inadequate nutrition. Because cheatgrass abundance recently increased in pastures of grassland in the Okanagan Valley of British Columbia, Canada, assessing environmental and biotic factors that influence its abundance is important from a management perspective. In an observational study at five heterogeneous sites, I isolated a number of highly significant correlations; cheatgrass abundance was positively correlated with proximity to focal ponderosa pine (Pinus ponderosa C. Lawson) trees, but negatively correlated with other plant diversity. Also, soil pH and soil moisture were significantly lower in proximity to trees than at distances further away, suggesting soil chemistry could have affected cheatgrass abundance. Because other analyses indicated that cheatgrass abundance differed in relation to the identity of the other species present, I conducted community-wide and species-specific co-occurrence analyses; I asked whether invaded communities featured different assembly patterns and isolated the species that had the strongest co-occurrence patterns with cheatgrass. I found that communities lacking cheatgrass were more diverse in terms of grass species and appeared to be structured non-randomly. Invaded communities, however, displayed patterns indicative of ‘disassembly’ as co-occurrence relationships did not differ from null predictions. Five grass species grew relatively more frequently if cheatgrass was present; these were bluebunch wheatgrass (Pseudoroegnaria spicata, Pursh. A. Love), Kentucky bluegrass (Poa pratensis L.), western needlegrass (Stipa occidentalis Thurb.), sand dropseed (Sporobolus cryptandrus Torr. A. Gray) and needle-and-thread-grass (Stipa comata Trin & Rupr. Barkworth). These results suggest that selective herbicide use in proximity to pine trees could be effective in controlling cheatgrass in these grasslands. I recommend manipulative experiments to assess the potential of this technique, as well as seeding experiments designed to characterize the most effective natural competitors against cheatgrass.
“When you see me again, it won't be me”. Twin Peaks from the Multichannel Era to the Digital Era
Creators: name: Susca, Carlotta
Publisher: name: Series - International Journal of TV Serial Narratives
Year: 2018
Subjects: Twin Peaks; audiovisuality; storytelling; TV series; David Lynch

description: On its debut in 1990, David Lynch and Mark Frost's TV series Twin Peaks aired during the “multichannel era” on the broadcasting channel ABC, one of the three free-to-air US TV networks at the time. ABC imposed major plot developments, e.g. the revelation of Laura Palmer's murderer early in season two, which the two creators intended to keep the mystery unsolved for a much longer time. For the revival of Twin Peaks (2017, during the digital era), distributed by Showtime, Lynch and Frost created a more complex audiovisual product. The Twin Peaks revival was realized with far more authorial liberty, due to the indisputable celebrity of Lynch and the possibility—fostered by the subscription-based premium cable platform Showtime—of aiming at a niche audience, a possibility that George Gilder foresaw in 1990. As a result, not only Twin Peaks – The Return's plot is much more complex than in the first two seasons, but it also proves how television in the digital era can lead to the creation of audiovisual narratives that fully exploit every audiovisual semiotic level.
description: Series - International Journal of TV Serial Narratives, Vol 4, No 2 (2018)
Forecasting Persistent Deep Slab Avalanches
Creators: name: Conlan, Michael Joseph William
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Atmospheric Sciences
subject: FOS: Earth and related environmental sciences
subject: Applied Mechanics
subject: Engineering--Civil
subject: snow avalanche
subject: Persistent weak layer
subject: avalanche mechanics
subject: snowpack tests
subject: weather
subject: forecasting
subject: decision support

description: Persistent deep slab avalanches are often difficult to forecast. For such avalanches to release, fractures are generally initiated in weak layers buried deep in the snowpack, often at depths where induced stresses and strain rates are dampened. The release of these avalanches can occur naturally from influences of the weather or they can be triggered artificially from localized dynamic loads, such as skiers, snowmobiles, and explosives. Improved forecasting for persistent deep slab avalanches requires an understanding of avalanche terrain, snowpack conditions, and weather that causes or influences their release. Natural and artificially triggered avalanches were accessed to examine such factors. Profiles and snowpack tests were conducted near the released start zones. Profiles indicated that persistent weak layers were generally softer than surrounding layers and they exhibited high propagation propensity. Natural avalanches triggered by snowpack warming or artificially triggered avalanches from skiers and snowboarders were often initiated in terrain where the snowpack was relatively thin. Next, a database of naturally triggered persistent deep slab avalanches was obtained to better understand weather conditions that preceded their release. Weather data were obtained from both weather stations and weather model forecasts. Classification trees were created for both data sources and correctly classified 87 and 83 % of the avalanches by their primary cause-of-release, respectively. An expert opinion survey was conducted to compare results of the field and database studies with what avalanche professionals observe in the field. All results of the studies were compiled to create a decision support tool to aid avalanche professionals in forecasting the likelihood of persistent deep slab avalanches. The tool correctly predicted 89 % of natural avalanches and 74 % of non-avalanche days. Lastly, cold laboratory experiments were conducted to determine the strength change of faceted grains above a melt-freeze crust, which is a common weak layer scenario for persistent deep slab avalanches. Shear frame tests indicated that shear strength increased with time, generally following a power law relationship when applying constant overburden load. The results of this dissertation may aid in the decision making process for avalanche professionals when forecasting the likelihood of persistent deep slab avalanches.
Review of the current state of the delayed-mode quality control tools and methods used within the global Argo community
Creators: name: WALICKA, Kamila
name: DONNELLY, Matt
Publisher: name: Zenodo
Year: 2019

description: Review and summary of variety of tools and procedures used by the global Argo community in delayed mode quality control. Assessment of the current state and future improvements require to increase the consistency of the Argo delayed-mode dataset and enhance the efficiency and sustainability of the delayed-mode quality control procedure based on global delayed-mode operator community feedback.
description: Activity carried out in the frame of Workpackage 2, Improvement of the Core Argo mission. This document is a subpart of the deliverable 2.5.
Breeding modernization strategies for rapid product development in Rice considering future climate change scenario
Creators: name: Sunil Nair, Abhinav Sao and Girish Chandel*
Publisher: name: The Science world a Monthly e magazine
Year: 2023

description: Central Indian state Chhattisgarh hosts huge rice diversity and it is being ex-situ stored at IGKV, Raipur. IGKV has a long history of rice breeding starting from 1906 till date and during the green revolution has done a significant contribution in terms of developing high-yielding rice varieties. The domestication and conventional breeding have led to more than 90 rice varieties suitable for the diverse ecology of Chhattisgarh. Plateau in yield over the last decades has been the point of concern for rice breeders and other stakeholders. Indira Gandhi Krishi Vishwavidyalaya (IGKV), Raipur, has been actively involved in rice research for over a century. The university is home to the world's second-largest rice biodiversity collection, which contains 23,250 rice accessions. This rich collection serves as a valuable source of unique traits and rare alleles/genes for developing modern rice varieties.
Phase Diagram of an Integrable Alternating $U_q[sl(2|1)]$ Superspin Chain
Creators: name: Frahm, Holger
name: Martins, Márcio J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We construct a family of integrable vertex model based on the typical four-dimensional representations of the quantum group deformation of the Lie superalgebra $sl(2|1)$. Upon alternation of such a representation with its dual this model gives rise to a mixed superspin Hamiltonian with local interactions depending on the representation parameter $\pm b$ and the deformation parameter $γ$. As a subsector this model contains integrable vertex models with ordinary symmetries for twisted boundary conditions. The thermodynamic limit and low energy properties of the mixed superspin chain are studied using a combination of analytical and numerical methods. Based on these results we identify the phases realized in this system as a function of the parameters $b$ and $γ$. The different phases are characterized by the operator content of the corresponding critical theory. Only part of the spectrum of this effective theory can be understood in terms of the U(1) symmetries related to the physical degrees of freedom corresponding to spin and charge. The other modes lead to logarithmic finite-size corrections in the spectrum of the theory.
description: 62 pages, 8 figures included
Artifact for "Smart Contract Security: a Practitioners' Perspective"
Creators: name: Anonymous
Publisher: name: Zenodo
Year: 2020

description: This is the artifact for the ICSE 2021 paper "Smart Contract Security: a Practitioners' Perspective". What the artifact does:
 1) an interview guide that we used for our semi-structured interviews (PDF); Note that the transcripts cannot be part of the artifacts according to the confidentiality and privacy clauses as specified in the IRB.
 2) a questionnaire that we used for our online survey (PDF);
 3) the valid responses of our online survey (CSV). For the codebook of interviews and scripts to reproduce the figures in the paper, please follow the link below: https://github.com/zhiyuan-wan/ICSE_2021_smart_contract_security
Lethe elwesi subsp. houjiangae Lang & Bozano 2015, ssp. nov.
Creators: name: Lang, Song-Yun
name: Bozano, Gian Cristoforo
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Nymphalidae
Lethe
Lethe elwesi
Lethe elwesi houjiangae lang & bozano

description: Lethe elwesi houjiangae Lang & Bozano ssp. nov.
(Figs. 1–6, 37)
Type material. Holotype ♂, CHINA: Yunnan, Gongshan, East slope of Mts. Gao-li-gong, 3200 m, 25.VII.2015, leg. S-y. Lang (LSY); Paratypes: 10 ♂♂, CHINA: Yunnan, Gongshan, Dulong-jiang valley, West slope of Mts. Gao-li-gong, 2800 m, 19.VII.2015, leg. S-y. Lang (LSY); 39 ♂♂, CHINA: Yunnan, Gongshan, East slope of Mts. Gao-li-gong, 2500–3200 m, 20–26.VII.2015, leg. S-y. Lang (LSY); 1 ♂, ditto (CMNH); 1 ♂, ditto (HH); 1 ♂, CHINA: N. Yunnan, Weixi, Tacheng, Samage Forest, 27°38'45"N 99°22'00"E, 2900 m, 14-7-2015, leg. F. Fantoni (FF).
Description. Male. Forewing length: 24–26 mm. Dorsal: ground color brown with markings the same as in the nominotypical elwesi. Ventral: ground color yellowish brown; unlike creamy white and silvery markings in the nominotypical elwesi, most of pale markings yellowish. Male genitalia (Figs. 17–19, 23–25, 29–31): Similar to the nominotypical elwesi. Female. Unknown.
Diagnosis. The new subspecies can be distinguished from the nominate subspecies by the combination of the following characters: a) Ventral side, ground color is yellowish brown, whereas it is darker reddish brown in the nominotypical subspecies; b) Ventral forewing, postdiscal markings and the pale bar between the two dark stripes in the cell are yellowish, whereas they are creamy white in the nominate subspecies; c) Ventral hindwing, pale discal band is yellow and broader, whereas it is silvery and relatively narrower in the nominate subspecies; d) Ventral hindwing, basal half silvery stripes and lines are slender and weaker, whereas they are more strongly developed in the nominate subspecies; f) Male genitalia: the basal half of the valva is wider than the nominate subspecies.
Etymology. The subspecific name houjiangae is named after Ms. Hou Jiang from CMNH.
Distribution. China (NW Yunnan)
description: Published as part of Lang, Song-Yun & Bozano, Gian Cristoforo, 2015, Lethe elwesi (Moore) stat. rev., a distinct species, with description of a new subspecies from NW Yunnan, China (Lepidoptera, Nymphalidae, Satyrinae), pp. 127-134 in Zootaxa 4058 (1) on pages 128-132, DOI: 10.11646/zootaxa.4058.1.8, http://zenodo.org/record/239787
Panicum (sect. Rudgeana) (Hitchc.) Zuloaga 1987
Creators: name: Fernando O. Zuloaga
name: Diego Giraldo-Cañas
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Poales
Poaceae
Panicum
Panicum rudgei

description: 7.  Panicum sect. Rudgeana  (Hitchc.) Zuloaga,
Ann. Missouri Bot. Gard. 74 (3): 470. 1987.
 Panicum grupo Rudgeana Hitchc., North American Flora 17 (3): 201. 1915.
 Especie tipo. Panicum rudgei Roem. & Schult.
 Plantas anuales o perennes, cespitosas. Cañas erectas. Hojas con lígulas membranáceo-ciliadas; láminas lanceoladas a linear- lanceoladas, planas. Inflorescencia una panoja terminal, exerta, laxa, o panoja terminal y axilares numerosas, formando un conjunto en el tercio superior de la planta. Espiguillas obovoides a elipsoides, biconvexas, abiertas en la madurez, pilosas a glabras, pajizas a violáceas. Gluma inferior 1/2 a 3/4 del largo de la espiguilla. Gluma superior y lema inferior algo mayores que el antecio superior, agudas. Pálea inferior conspicua, membranácea; flor estaminada presente o ausente. Antecio superior ovoide, glabro, estipitado en la base, liso, lustroso, endurecido, pálea con papilas verrugosas en su ápice. Cariopsis con hilo punctiforme, embrión menos de 1/2 del largo de la cariopsis.
 Composición y distribución. Sección con cinco especies que habitan en lugares abiertos, secos y soleados, en sabanas de América Central y Sudamerica, desde el nivel del mar hasta 1500 m de altitud.
 Comentarios. Plantas C4, Kranz del subtipo anatómico PS (= XyMS+), NAD; número cromosómico básico x = 9.    Clave para las especies de Panicum sect. Rudgeana presentes en Colombia
 1. Espiguillas 2.1-2.6 mm de largo; vainas con pelos suaves...........  7-1. Panicum cayennense
 1. Espiguillas 3-3.5 mm de largo; vainas usualmente con pelos urticantes.............................................................................................................................................  7-2. Panicum rudgei
description: Published as part of Fernando O. Zuloaga & Diego Giraldo-Cañas, 2013, 30. Panicum, pp. 1-107 in Flora de Colombia 30 on pages 54-55, DOI: 10.5281/zenodo.259616
V-SMART-Join: A Scalable MapReduce Framework for All-Pair Similarity Joins of Multisets and Vectors
Creators: name: Metwally, Ahmed
name: Faloutsos, Christos
Publisher: name: arXiv
Year: 2012
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: This work proposes V-SMART-Join, a scalable MapReduce-based framework for discovering all pairs of similar entities. The V-SMART-Join framework is applicable to sets, multisets, and vectors. V-SMART-Join is motivated by the observed skew in the underlying distributions of Internet traffic, and is a family of 2-stage algorithms, where the first stage computes and joins the partial results, and the second stage computes the similarity exactly for all candidate pairs. The V-SMART-Join algorithms are very efficient and scalable in the number of entities, as well as their cardinalities. They were up to 30 times faster than the state of the art algorithm, VCL, when compared on a real dataset of a small size. We also established the scalability of the proposed algorithms by running them on a dataset of a realistic size, on which VCL never succeeded to finish. Experiments were run using real datasets of IPs and cookies, where each IP is represented as a multiset of cookies, and the goal is to discover similar IPs to identify Internet proxies.
description: VLDB2012
The radio structure of ultra-high-energy synchrotron peak BL Lacs
Creators: name: Wu, Zhongzu
name: Jiang, D. R.
name: Gu, Minfeng
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the results of EVN and MERLIN 5 GHz observations of nine ultra-high-energy synchrotron peak BL Lacs (UHBLs) selected as all BL Lacs with \textbf{log ($ν_{\rm peak}/ \rm Hz)>20$} from Nieppola et al.. The radio structure was investigated for these sources, in combination with the available VLBA archive data. We found that the core-jet structure is detected in five sources, while four sources only have a compact core on pc scale. The core of all sources shows high brightness temperature (with mean and median values \textbf{log ($T_{\rm b} / {\rm K}) \sim11$}, which implies that the beaming effect likely present in all sources. When the multi-epoch VLBI data are available, we found no significant variations either for core or total flux density in two sources (2E 0414+0057 and EXO 0706.1+5913), and no evident proper motion in 2E 0414+0057, while the superluminal motion is likely detected in EXO 0706.1+5913. Our sources are found to be less compact than the typical HBLs in Giroletti et al, by comparing the ratio of the VLBI total flux to the core flux at arcsec scale. Combining all our results, we propose that the beaming effect might be present in the jets of UHBLs, however, it is likely weaker than that of typical HBLs. Moreover, we found that UHBLs could be less Doppler beamed versions of HBLs with similar jet power, by comparing the distribution of redshift, and radio luminosities. The results are in good consistence with the expectations from our previous work.
description: 14 pages, 15 figures and 5 tables. Accepted by MNRAS
Understanding and Controlling Wettability of Carbon Powders for PEM Fuel Cell Applications
Creators: name: Li, Xiaoan
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Energy
subject: Engineering--Environmental
subject: Materials Science
subject: Wettability
subject: Carbon powders
subject: PEM fuel cell
subject: Heat treatment
subject: Surface functionalization
subject: Nafion

description: The wettability of catalyst layers (CLs), especially of the cathode, is critical to enhancing the performance and lifetime of polymer electrolyte membrane fuel cells (PEMFCs). As the CLs are composed of Pt nanoparticles supported on carbon powders, bound together with Nafion®, the main focus of this work was to understand and control the wettability of carbon materials for their use in PEMFCs. The droplet impacting (DI) method was first used to study the wettability of conventional, microporous Vulcan® carbon (VC)/Nafion composites, showing that the wettability varies with VC content (from hydrophilic to superhydrophobic) and is significantly affected by the presence of Nafion. This is attributed primarily to the orientation and coverage of the Nafion molecular chains on the carbon surface, as well as the roughness of the composite surfaces. Both contact angle kinetics (CAK) and water vapor sorption (WVS) measurements were then used to examine the relative wettability of several other types of carbon powders, but in the absence of Nafion, and using VC as a benchmark material. It was found that colloid-imprinted carbon (CIC) powders, synthesized using silica colloid templates of varying sizes, are much more hydrophilic than VC, due to their high surface oxygen group density. It was also shown that heat treatment at 1500 °C in N2 makes the CICs much more hydrophobic by removing the surface oxygen groups. Ordered mesoporous carbons (OMCs), synthesized using hexagonal mesoporous silica templates but with different carbon precursors, were also found to contain hydrophilic mesopores, but the anthracene-derived OMC contains more large mesopores and is more hydrophilic than the sucrose-derived OMC, which may have a very thin carbon coating on its surface. These differences were explained as being due to the different formation mechanisms of the two OMCs. Both CIC and VC surfaces were also surface modified with pentafluorophenyl groups, using an in-situ diazonium reduction reaction. The fluorination was confirmed to increase the hydrophobicity of these carbons, but the reaction was also found to introduce nitro groups onto the carbon surfaces. Overall, this thesis work has demonstrated that the three methods used here for wettability assessment, DI, CAK and WVS, can all contribute to the understanding of the properties of carbon powder surfaces. The as-synthesized mesoporous carbons have been shown to be very hydrophilic, and either heat treatment or surface fluorination converts them to a hydrophobic state.
Evaluating potential for data assimilation in a flux-transport dynamo model by assessing sensitivity and response to meridional flow variation
Creators: name: Dikpati, Mausumi
name: Anderson, Jeffrey L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We estimate here a flux-transport dynamo model's response time to changes in meridional flow speed. Time-variation in meridional flow primarily determines the shape of a cycle in this class of dynamo models. In order to simultaneously predict the shape, amplitude and timing of a solar cycle by implementing an Ensemble Kalman Filter in the framework of Data Assimilation Research Testbed (DART), it is important to know the model's sensitivity to flow variation. Guided by observations we consider a smooth increase or decrease in meridional flow speed for a specified time (a few months to a few years), after which the flow speed comes back to the steady speed, and implement that time-varying meridional flow at different phases of solar cycle. We find that the model's response time to change in flow speed peaks at four to six months if the flow change lasts for one year. The longer the changed flow lasts, the longer the model takes to respond. Magnetic diffusivity has no influence in model's response to flow variation as long as the dynamo operates in the advection-dominated regime. Experiments with more complex flow variations indicate that the shape and amplitude of flow-perturbation have no influence in the estimate of model's response time.
description: Accepted in ApJ
High-resolution observations of two OVI absorbers at z=2 towards PKS 1448-232
Creators: name: Draganova, N.
name: Richter, P.
name: Fechner, C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: To explore the ionization conditions in highly-ionized absorbers at high redshift we have studied in detail two intervening OVI absorbers at z=2 towards the quasar PKS1448-232, based on high (R=75,000) and intermediate (R=45,000) resolution optical VLT/UVES spectra. We find that both absorption systems are composed of several narrow subcomponents with CIV/OVI Doppler-parameters b<10 km/s, typically. This implies that the gas temperatures are T<10^5 K and that the absorbers are photoionized by the UV background. The system at z=2.1098 represents a simple, isolated OVI absorber that has only two absorption components and that is relatively metal-rich (Z\sim 0.6 solar). Ioinization modeling implies that the system is photoionized with OVI, CIV, and HI coexisting in the same gas phase. The second system at z=2.1660 represents a complicated, multi-component absorption system with eight OVI components spanning almost 300 km/s in radial velocity. The photoionization modeling implies that the metallicity is non-uniform and relatively low (<= 0.1 solar) and that the OVI absorption must arise in a gas phase different from that traced by CIV, CIII, and HI. Our detailed study of the two OVI systems towards PKS1448-232 shows that multi-phase, multi-component high-ion absorbers like the one at z=2.1660 require a detailed ionization modeling of the various subcomponents to obtain reliable results on the physical conditions and metal-abundances in the gas.