cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Haumea rehderi
Creators: name: Dijkstra, Henk H.
name: Maestrati, Philippe
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Bivalvia
Pectinoida
Pectinidae
Haumea
Haumea rehderi

description: Haumea rehderi (Grau, 1960)
 Chlamys (Argopecten) rehderi Grau, 1960: 15, pl. 2, figs 1-3.
 Haumea rehderi – Dijkstra 1998a: 44, pl. 9, figs 1-4. — Raines & Poppe 2006: 318, pl. 274, fig. 2. — Dijkstra & Maestrati 2012: 403.
 MATERIAL EXAMINED. — Society Islands. Bora Bora Island, Tereia Point, 24-29 m, leg. H. A. Rehder, 04.04.1957, holotype spm (USNM 612201). Tarasoc, stn CP 3428, 16˚45.5’S, 151˚0.3’W, 32-38 m, 2 rv.
DISTRIBUTION. — Thailand, Philippines, Indonesia, NE Australia, Papua New Guinea, New Caledonia, Loyalty Islands, Fiji Islands, Vanuatu, and Society Islands; living at 3-55 m (coll. HD, pers. data).
REMARKS
The present single valves are morphologically indistinguishable from the type material.
description: Published as part of Dijkstra, Henk H. & Maestrati, Philippe, 2013, Pectinoidea (Bivalvia: Propeamussiidae, Entoliidae and Pectinidae) from the Tarava Seamounts, Society Islands and the Tuamotu Archipelago (French Polynesia), pp. 361-375 in Zoosystema 35 (3) on page 374, DOI: 10.5252/z2013n3a2, http://zenodo.org/record/4539386
Automated Segmentation of Left Ventricle in 2D echocardiography using deep learning
Creators: name: Azarmehr, Neda
name: Ye, Xujiong
name: Janan, Faraz
name: Howard, James P
name: Francis, Darrel P
name: Zolgharni, Massoud
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Following the successful application of the U-Net to medical images, there have been different encoder-decoder models proposed as an improvement to the original U-Net for segmenting echocardiographic images. This study aims to examine the performance of the state-of-the-art proposed models as well as the original U-Net model by applying them to segment the endocardium of the Left Ventricle in 2D automatically. The prediction outputs of the models are used to evaluate the performance of the models by comparing the automated results against the expert annotations (gold standard). Our results reveal that the U-Net model outperforms other models by achieving an average Dice coefficient of 0.92$ \pm 0.05$, and Hausdorff distance of 3.97$ \pm 0.82$.
description: 4 pages, 1 figure, Extended Abstract MIDL conference
title: The regency and administration of James Douglas, fourth earl of Morton
Creators: name: Hewitt, George R.
Publisher: name: The Open University
Year: 1979

description: Morton, the obvious successor to Mar in November, 1572, effectively commenced his regency in June, 1573, by which date all opposition had been pacified or overcome. His overthrow in March, 1578 was, at least partly, the result of his own maladroit tactics. Although he was subsequently reinstated, he never recovered his former dominance - hence, so it would appear, a stratagem such as the proscription of the Hamiltons. He was disastrously indecisive in 1580, thus permitting the Lennox-Arran faction to attain an overwhelming supremacy against which he and his supporters found it impossible to offer a serious challenge. His reorganisation of the Kirk's finances and accompanying reforms provoked some criticism, albeit not on a considerable scale until 1578. While he did not halt dilapidation, there is no evidence of excessive plundering of ecclesiastical wealth, and questions of patrimony seem to have been overshadowed by those of polity. Here, an ill-defined policy led to growing hostility particularly towards episcopacy. This was largely a consequence of Morton's equivocal treatment of the second Book of Discipline. Nonetheless, it seems conceivable that both sides, aware of the consequences, exercised some measure of restraint. The kernel of his foreign policy was the English alliance. He failed to secure a permanent league with England primarily because Elizabeth saw no necessity, even in 1580, for such a commitment. His border administration was notable competent while he remained regent but latterly, with his own decline, the frontier was governed less satisfactorily. His other domestic achievements were limited and there is a controversial taint of corruption.
Photometric study of the variable star population in the globular cluster NGC 6397
Creators: name: Kaluzny, J.
name: Thompson, I. B.
name: Krzeminski, W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of a photometric survey for variable stars in the central region of the nearby globular cluster NGC 6397.Time series photometry was obtained for 30 variable objects. The sample includes 12 new objects, of which 6 show periodic lightcurves and 2 are eclipsing binaries of unknown period. Six variables possess certain and three possess likely X-ray counterparts detected with the Chandra observatory. Among them four are cataclysmic variables and one is a foreground eclipsing binary. The cataclysmic variable CV2 exhibited a likely dwarf nova type outburst in May 2003. The cataclysmic variable CV3 was observed at 18.522. We have found that thelight curve of the optical companion to the millisecond pulsar PSRJ1740-5340 exhibits noticeable changes of its amplitude on a time scale of a few months. A shallow eclipse with Delta_V=0.03 mag was detected in one of the cluster turnoff stars suggesting the presence of a large planet or brown dwarf in orbit.
description: 8 pages, 9 figures, submitted to MNRAS on 21 April 2005
Zrzeszanie się producentów rolnych jako przykład współdziałania w sektorze rolnictwa – doświadczenia wybranych krajów członkowskich Unii Europejskiej
Creators: name: Zielińska-Szczepkowska, Joanna
name: Kisiel, Roman
name: Zielińska-Szczepkowska, Joanna
name: Kisiel, Roman
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Farm Management
subject: Industrial Organization
subject: International Relations/Trade
subject: producer organisations
subject: cooperation
subject: rural areas
subject: / grupy producenckie
subject: współpraca
subject: rynek rolny

description: The need for integration of farmers began with the mechanisms of the market economy, in which manufacturers had to make decisions taking into account the economic situation of the market, including in particular: the laws of supply and demand, high competition and prices of products. The aim of this paper is to characterize the creation and functions of agricultural producer groups. The following issues were examined: determinants of organizational relationships between agricultural producers, their characteristics, and the legal conditions needed to function. As examples, models of agricultural producer groups functioning in selected countries of the European Union were described. / Synopsis. Potrzeba integracji rolników znajduje swoje źródło w mechanizmach gospodarki rynkowej, w której producenci muszą podejmować decyzje gospodarcze uwzględniając sytuację na rynku, w tym przede wszystkim: prawo popytu, podaży, ogromną konkurencję, a także poziomy cen produktów. W artykule poruszono zagadnienia związane z procesem organizowania się producentów rolnych w różne grupy. Kolejno analizowano następujące kwestie: uwarunkowania więzi organizacyjnych producentów rolnych, ewolucję ustawodawstwa oraz specyfikę funkcjonowania wybranych form kooperacji w rolnictwie. Za przykład posłużyły tu modele funkcjonujące w wybranych krajach Unii Europejskiej (UE).
A PROBABILISTIC DEMAND APPLICATION IN THE AMERICAN CRACKER MARKET
Creators: name: Johnson, Rutherford Cd.
name: Johnson, Rutherford Cd.
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agricultural and Food Policy
subject: Consumer/Household Economics
subject: Demand and Price Analysis
subject: Food Consumption/Nutrition/Food Safety
subject: Marketing
subject: FOS: Economics and business
subject: Probabilistic demand
subject: Choice Waves
subject: quasi-rationality
subject: private labels
subject: volatility
subject: decision modeling
subject: information

description: Knowledge of the distribution of consumer buying strategies by producers may permit improved marketing strategies and improved ability to respond to volatile market conditions. In order to investigate potential ways of gaining such knowledge, this study extends the work of Kahneman, Russell, and Thaler through the application of a probabilistic demand framework using Choice Wave theory, based on the Schrödinger Wave Equation in quantum mechanics. Probabilistic variability of response to health information and its potential influence on buying strategies is also investigated, extending the work of Clement, Johnson, Hu, Pagoulatos, and Debertin. In the present study, the domestic cracker market within fourteen U.S. metropolitan areas is segmented, using the Choice Wave Probabilistic Demand approach, into two statistically independent “Consumer Types” of seven metropolitan areas each. The two Consumer Types are shown to have statistically different elasticities than each other and from the combined market as a whole. This approach may provide not only improved marketing strategies through improved awareness of consumer preferences and buying strategies, especially in the volatile agricultural sector, but also may be useful in aiding producers of store brand/private label products in finding desirable markets in which to compete against national brands. The results also suggest that supply/producer-side strategies should take into account the ways in which information, whether under the direct control of the producer or not, may influence and change consumer buying strategies
LOFAR early-time search for coherent radio emission from Short GRB 181123B
Creators: name: Rowlinson, A.
name: Starling, R. L. C.
name: Gourdji, K.
name: Anderson, G. E.
name: ter Veen, S.
name: Mandhai, S.
name: Wijers, R. A. M. J.
name: Shimwell, T. W.
name: van der Horst, A. J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The mergers of two neutron stars are typically accompanied by broad-band electromagnetic emission from either a relativistic jet or a kilonova. It has also been long predicted that coherent radio emission will occur during the merger phase or from a newly formed neutron star remnant, however this emission has not been seen to date. This paper presents the deepest limits for this emission from a neutron star merger folowing triggered LOFAR observations of the short gamma-ray burst (SGRB) 181123B, starting 4.4 minutes after the GRB occurred. During the X-ray plateau phase, a signature of ongoing energy injection, we detect no radio emission to a 3$σ$ limit of 153 mJy at 144 MHz (image integration time of 136 seconds), which is significantly fainter than the predicted emission from a standard neutron star. At a redshift of 1.8, this corresponds to a luminosity of $2.5 \times 10^{44}$ erg s$^{-1}$. Snapshot images were made of the radio observation on a range of timescales, targeting short duration radio flashes similar to fast radio bursts (FRBs). No emission was detected in the snapshot images at the location of GRB 181123B enabling constraints to be placed on the prompt coherent radio emission model and emission predicted to occur when a neutron star collapses to form a black hole. At the putative host redshift of 1.8 for GRB 181123B, the non detection of the prompt radio emission is two orders of magnitude lower than expected for magnetic reconnection models for prompt GRB emission and no magnetar emission is expected.
description: MNRAS Accepted, 11 pages, 6 figures
ALMA Observations of PSR B1259-63/LS 2883 in an Inactive Period: Variable Circumstellar Disk?
Creators: name: Fujita, Yutaka
name: Akahori, Hiroshi Nagai. Takuya
name: Kawachi, Akiko
name: Okazaki, Atsuo T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report Atacama Large Millimeter/submillimeter Array (ALMA) observations of the gamma-ray binary system containing the pulsar PSR B1259-63 orbiting around a massive star LS 2883 in an inactive period between the 2017 and 2021 periastron passages. We detected radio continuum emission from the binary system at 97 GHz (Band 3) and 343 GHz (Band 7). Compared with our previous ALMA observations performed soon after the 2017 periastron passage, the fluxes have decreased by an factor of six at 97 GHz and two at 343 GHz. The flux at 343 GHz is large relative to that at 97 GHz and appears to be thermal emission from the circumstellar disk around LS 2883. The decrease of the 343 GHz flux may indicate that the disk has expanded and become partially optically-thin since the disk is no longer affected by pulsar winds. The flux at 97 GHz is consistent with that expected from the pulsed emission from the pulsar, which indicates that the unpulsed emission that had been produced through pulsar-disk or pulsar-stellar wind interaction has disappeared. The image of the system is consistent with a point source and shows no sign of ejecta.
description: Accepted for publication in PASJ
Quantum Hall fractions in ultracold fermionic vapors
Creators: name: Jolicoeur, Thierry
name: Regnault, Nicolas
Publisher: name: arXiv
Year: 2004
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We study the quantum Hall states that appear in the dilute limit of rotating ultracold fermionic gases when a single hyperfine species is present. We show that the p-wave scattering translates into a pure hard-core interaction in the lowest Landau level. The Laughlin wavefunction is then the exact ground state at filling fraction nu=1/3. We give estimates of some of the gaps of the incompressible liquids for nu = p/(2p+-1). We estimate the mass of the composite fermions at nu =1/2. The width of the quantum Hall plateaus is discussed by considering the equation of state of the system.
description: RevTex, 4 pages, 3 figs
Enhancing sustainability of household water filters by mixing metallic iron with porous materials
Creators: name: Noubactep, C.
name: Caré, S.
Publisher: name: FID GEO
Year: 2010

description: This study conceptually discusses the feasibility of enhancing the sustainability of conventional iron/sand filter (Fe0/sand filter) for safe drinking water by partially or totally substituting sand (quartz) by porous materials. Relevant materials included activated carbon, dolomites, limestone, pumice, sandstone, and zeolites. The rational was to use the internal volume of porous additives as storage room for in-situ generated iron oxyhydroxides (iron corrosion products) and thus delay time to filter clogging. Based on previous works a filter with a volumetric Fe0:quartz ratio of 51:49 was used as reference system. The reference system is clogged upon Fe0 depletion. Results showed that totally substituting quartz by pumice particles having a porosity of 80 % yields to a residual porosity of 41 %. This encouraging result suggested that the possibility of using Fe0/MnO2/pumice systems for a synergic promotion of Fe0 reactivity (by MnO2) and filter permeability (by pumice) should be investigated in more details.
LAND ALLOCATION AMONG THE MAIN CROPS IN ARGENTINA: ESTIMATION OF PRICE AND LAND ELASTICITIES
Creators: name: Arancibia, Rodrigo García
name: Guiguet, Edith Depetris
name: Rossini, Gustavo
name: Coronel, Mariano
name: Arancibia, Rodrigo García
name: Guiguet, Edith Depetris
name: Rossini, Gustavo
name: Coronel, Mariano
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Community/Rural/Urban Development
subject: Crop Production/Industries
subject: Demand and Price Analysis
subject: Land Economics/Use
subject: Political Economy
subject: Differential Approach
subject: Rotterdam Model
subject: Agricultural production
subject: Soybean

description: In the past twenty years, there have been significant changes in land allocation among the main crops in Argentina. The aim of this paper was to analyze how those changes responded to variations in their relative prices in the short-term and quantify their responses. Additionally, it focused on understanding how the hectares devoted to a particular crop responded to changes in the total planted area. For this purpose a system of land allocation equations was estimated for the period 1980-2014. The results showed that the area planted with corn, soybean, sunflower and wheat responded to their own prices, being inelastic in all cases. A statistically significant and negative cross-price elasticity was observed for sunflower and corn. The other cross-price elasticities showed substitution for land use but they were not statistically significant. The land elasticities revealed to be elastic for wheat and inelastic for corn, soybean and sunflowers, while not significant for sorghum
Structural Vulnerability of the North American Power Grid
Creators: name: Albert, Reka
name: Albert, Istvan
name: Nakarado, Gary L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The magnitude of the August 2003 blackout affecting the United States has put the challenges of energy transmission and distribution into limelight. Despite all the interest and concerted effort, the complexity and interconnectivity of the electric infrastructure have so far precluded us from understanding why certain events happened. In this paper we study the power grid from a network perspective and determine its ability to transfer power between generators and consumers when certain nodes are disrupted. We find that the power grid is robust to most perturbations, yet disturbances affecting key transmision substations greatly reduce its ability to function. We emphasize that the global properties of the underlying network must be understood as they greatly affect local behavior.
description: 10 pages, 4 figures, to appear in PRE
Base de datos de Artículos sobre Interfaces Adaptativas Segun el Estado de Animo
Creators: name: Villacorta, Flavio
name: Cortez, Frank
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 400901
subject: Analog electronics and interfaces

description: Esta es una base de datos de una revisión de la literatura acerca del tema de interfaces adaptativas según estado de animo
MODELLING CONSUMERS' DEMAND FOR ORGANIC FOOD PRODUCTS: THE SWEDISH EXPERIENCE
Creators: name: Irandoust, Manuchehr
name: Irandoust, Manuchehr
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Demand and Price Analysis
subject: Food Consumption/Nutrition/Food Safety
subject: Research Methods/ Statistical Methods
subject: Consumer behavior
subject: Proportional odds model
subject: Organic food
subject: Willingness to pay
subject: Cultural background
subject: Marketing strategy

description: This paper attempts to examine a few factors characterizing consumer preferences and behavior towards organic food products in the south of Sweden using a proportional odds model which captures the natural ordering of dependent variables and any inherent nonlinearities. The findings show that consumer's choice for organic food depends on perceived benefits of organic food (environment, health, and quality) and consumer's perception and attitudes towards labelling system, message framing, and local origin. In addition, high willingness to pay and income level will increase the probability to buy organic food, while the cultural differences and socio-demographic characteristics have no effect on consumer behaviour and attitudes towards organic food products. Policy implications are offered.
Logarithmic divergence of the block entanglement entropy for the ferromagnetic Heisenberg model
Creators: name: Popkov, Vladislav
name: Salerno, Mario
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Recent studies have shown that logarithmic divergence of entanglement entropy as function of size of a subsystem is a signature of criticality in quantum models. We demonstrate that the ground state entanglement entropy of $ n$ sites for ferromagnetic Heisenberg spin-1/2 chain of the length $L$ in a sector with fixed magnetization $y$ per site grows as ${1/2}\log_{2} \frac{n(L-n)}{L}C(y)$, where $C(y)=2πe({1/4}-y^{2})$
description: 4 pages, 2 figs
title: Darwin in context: the London years, 1837-1842
Creators: name: Erskine, Fiona
Publisher: name: The Open University
Year: 1987

description: This thesis explores Darwin's life in London in the context of the social relationships he formed there. Recent studies have highlighted the paradox between his speculative work, with its dangerous associations with political radicalism and infidelity, and his intense desire for social respectability, evidenced by his determination to shun controversy and by his retirement to the security of family life in the Kent countryside. How Darwin coped with the tension arising from this mismatch of intellectual radicalism and social conservatism has not been explained; it is widely assumed that it was a major factor in prompting his prolonged and frequent attacks of debilitating illness. The problem is addressed here by looking at the support Darwin drew from the friends he made in London. His experiences during the Beagle voyage had led him to focus on philosophical issues which had not previously troubled him. Having returned to England, he deliberately chose to surround himself with friends who were not afraid to adopt heterodox positions on religion and society; in their company his personal anxieties were assuaged and he could pursue new ideas with enthusiasm. These friends had specialist knowledge in subjects which had a close bearing on Darwin's theories. His relationship with them throws light on issues such as how the debate about religion influenced his evolutionary thinking, and the nature of the contribution made to it by Malthus. The esteem in which they were held, notwithstanding their intellectual radicalism, explains how Darwin was able to find in their company the self-confidence to develop his iconoclastic conclusions. His identification with them, and their contribution to the intellectual re-evaluation of the 1830s and 1840s, helps to account for the wide acceptance of Darwin's views, published twenty years later, when the social ideology being formulated in his youth had become the prevailing orthodoxy of mid-Victorian England.
Universal scaling and characterisation of gelation in associative polymer solutions
Creators: name: Santra, Aritra
name: Dünweg, B.
name: Prakash, J. Ravi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A Brownian dynamics algorithm is used to describe the static behaviour of associative polymer solutions. Predictions for the fractions of stickers bound by intra-chain and inter-chain association, as a function of system parameters, such as the number of stickers, the number of monomers between stickers, the solvent quality, and concentration are obtained. A systematic comparison with the scaling relations predicted by the mean-field theory of Dobrynin (Macromolecules, 37, 3881, 2004) is carried out. Different regimes of scaling behaviour are identified depending on the monomer concentration, the density of stickers on a chain, and the solvent quality for backbone monomers. Simulation results validate the predictions of the mean-field theory across a wide range of parameter values in all the scaling regimes. The value of the des Cloizeaux exponent proposed by Dobrynin for sticky polymer solutions, is shown to lead to a collapse of simulation data for all the scaling relations considered here. Three different signatures for the characterisation of gelation are identified, with each leading to a different value of the concentration at the sol-gel transition. The modified Flory-Stockmayer expression is found to be validated by simulations for all three gelation signatures. Simulation results confirm the prediction of scaling theory for the gelation line that separates sol and gel phases, when the modified Flory-Stockmayer expression is used. Phase separation is found to occur with increasing concentration for systems in which the backbone monomers are under theta-solvent conditions, and is shown to coincide with a breakdown in the predictions of scaling theory.
description: 34 pages, 22 figures, includes Supplemental Material, accepted version
Technical Note: In-situ derivatization thermal desorption GC-TOFMS for direct analysis of particle-bound non-polar and polar organic species
Creators: name: Orasche, J.
name: Schnelle-Kreis, J.
name: Abbaszade, G.
name: Zimmermann, R.
Publisher: name: FID GEO
Year: 2011

description: An in-situ derivatization thermal desorption method followed by gas chromatography and time-of-flight mass spectrometry (IDTD-GC-TOFMS) was developed for determination of polar organic compounds together with non-polar compounds in one measurement. Hydroxyl and carboxyl groups of compounds such as anhydrous sugars, alcohols and phenols, fatty acids and resin acids are targets of the derivatization procedure. Derivatization is based on silylation with N-Methyl-N-trimethylsilyltrifluoroacetamide (MSTFA) during the step of thermal desorption. The high temperature of 300 C during desorption is utilized for the in-situ derivatization on the collection substrate (quartz fibre filters) accelerating the reaction rate. Thereby, the analysis time is as short as without derivatization. At first the filter surface is dampened with derivatization reagent before insertion of the sample into the thermal desorption unit. To ensure ongoing derivatization during thermal desorption the carrier gas is enriched with MSTFA until the desorption procedure is finished. The precisions of all studied analytes were below 17% within a calibration range from 22 pg (abietic acid) up to 342 ng (levoglucosan). Limits of quantification (LOQ) for polycyclic aromatic hydrocarbons (PAH) were between 1 pg (fluoranthene) and 8 pg (indeno[1,2,3-cd]pyrene), for resin acids 37–102 pg and for studied phenols 4–144 pg. LOQ for levoglucosan was 17 pg.
Mechanism of Uranium Removal from the Aqueous Solution by Elemental Iron
Creators: name: Noubactep, C.
name: Schöner, A.
name: Meinrath, G.
Publisher: name: FID GEO
Year: 2006

description: The effectiveness of elemental iron (Fe0) to remove uranium (U) from the aqueous phase has been demonstrated. While the mitigation effect is sure, discrepancies in the removal mechanism have been reported. The objective of this study was to investigate the mechanism of U(VI) removal from aqueous phases by Fe0. For this purpose a systematic sequence of bulk experiments was conducted to characterize the effects of the availability and the abundance of corrosion products on U(VI) removal. Results indicated that U(VI) removal reactions did not primary occur at the surface of the metallic iron. It is determined that U(VI) co-precipitation with aging corrosion products is a plausible explanation for the irreversible fixation under experimental conditions. Results of XRD analyses did no show any U phases, whereas SEMEDX analyses showed that U tended to associate with rusted areas on the surface of Fe0. Recovering U with different leaching solutions varied upon the dissolution capacity of the individual solutions for corrosion products, showing that the irreversibility of the removal depends on the stability of the corrosion products. U(VI) co-precipitation as removal mechanism enables a better discussion of reported discrepancies.
Adapting Deep Learning Methods for Mental Health Prediction on Social Media
Creators: name: Sekulić, Ivan
name: Strube, Michael
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Mental health poses a significant challenge for an individual's well-being. Text analysis of rich resources, like social media, can contribute to deeper understanding of illnesses and provide means for their early detection. We tackle a challenge of detecting social media users' mental status through deep learning-based models, moving away from traditional approaches to the task. In a binary classification task on predicting if a user suffers from one of nine different disorders, a hierarchical attention network outperforms previously set benchmarks for four of the disorders. Furthermore, we explore the limitations of our model and analyze phrases relevant for classification by inspecting the model's word-level attention weights.
description: W-NUT at EMNLP 2019
Feathery and network-like filamentous textures as indicators for the re-crystallization of quartz from a metastable silica precursor at the Rusey Fault Zone, Cornwall, UK
Creators: name: Yilmaz, Tim I.
name: Duschl, Florian
name: Di Genova, Danilo
Publisher: name: FID GEO
Year: 2016

description: Hydrothermal quartz crystals, which occur in the Rusey Fault Zone (Cornwall, UK), show feathery textures and network-like filamentous textures. Optical hotcathodoluminescence (CL) analysis and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) investigations on quartz samples revealed that positions exhibiting feathery textures (violet luminescence) contain higher amounts of Al and Li than quartz positions without feathery textures (blue luminescence), while concentrations of Al and Li are significantly lower in feathery textures. Both Al and Li correlate negatively with Si. Raman spectroscopy investigations revealed the presence of a weak peak at 507– 509 cm􀀀1 in quartz affected by feathery textures, which we attribute to the presence of 5% moganite, a microcrystalline silica polymorph, intergrown with chalcedony. The combined occurrence of feathery textures and network-like filamentous textures in quartz samples from the Rusey Fault Zone points to the presence of a metastable silica precursor (i.e., amorphous silica or silica gel) before or during the crystallization.
Kink manifolds in a three-component scalar field theory
Creators: name: Izquierdo, A. Alonso
name: Sanchez, J. C. Bueno
name: Leon, M. A. Gonzalez
name: Mayado, M. de la Torre
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work we identify the manifold of solitary waves arising in a three-component scalar field model using the Bogomol'nyi arrangement of the energy functional. A rich structure of topological and non-topological kinks exists in the different sub-models contained in the theory.
description: 23 pages, 13 figures
Black dimensional stones: geology, technical properties and deposit characterization of the dolerites from Uruguay
Creators: name: Morales Demarco, Manuela
name: Oyhantçabal, Pedro
name: Stein, Karl-Jochen
name: Siegesmund, Siegfried
Publisher: name: Springer-Verlag
Year: 2010

description: Dimensional stones with a black color occupy a prominent place on the international market. Uruguayan dolerite dikes of andesitic and andesitic–basaltic composition are mined for commercial blocks of black dimensional stones. A total of 16 dikes of both compositions were studied and samples collected for geochemical and petrographical analysis. Color measurements were performed on different black dimensional stones in order to compare them with the Uruguayan dolerites. Samples of the two commercial varieties (Absolute Black and Moderate Black) were obtained for petrophysical analysis (e.g. density, porosity, uniaxial compressive strength, tensile strength, etc.). Detailed structural analyses were performed in several quarries. Geochemistry and petrography determines the intensity of the black color. The Uruguayan dolerite Absolute Black is the darkest black dimensional stone analyzed in this study. The petrophysical properties of Uruguayan dolerites make them one of the highest quality black dimensional stones. Structural analyses show that five joint sets have been recognized: two sub-vertical joints, one horizontal and two diagonal. These joint sets are one of the most important factors that control the deposits, since they control the block size distribution and the amount of waste material.
Characeae-derived carbonate deposits in Lake Ganau, Kurdistan Region, Iraq
Creators: name: Khanaqa, Polla
name: Karim, Kamal
name: Thiel, Volker
Publisher: name: Springer Berlin Heidelberg
Year: 2012

description: Characeae, a family of calcifying green algae, are common in carbonate-rich freshwaters. The southwestern shoreline of Lake Ganau (Kurdistan Region, northeastern Iraq) harbors dense and thick mats of these algae (genus Chara). On the lake bottom and along the shore, carbonate sands and rocks rich in the remains of stems, branches, nodes, and whorls of Chara are deposited. These deposits show all stages of growth and degradation of characean algae, including replacement and lithification into limestone. The replacement of the fragments by fine-grained calcite preserved delicate microstructures of Chara, such as cortical walls, cell shape, inner and outer layers of the stems, and reproductive organs. Based on roundness, sorting, the degree of lithification, and preserved microstructures of the grains (fragments), three facies were recognized. The first is represented by a newly formed lime sand facies showing elongated grains, poor sorting, and reduced roundness, with pristine preservation of characean surface microstructures. The second is a weathered lime sand facies, which shows better sorting and good roundness, whereas internal structures of characean fragments are still well preserved. The third is comprised of a lithified lime sand facies (grainstone), with very well sorted and rounded grains, and poorly preserved external and internal structures of the characeans. As compared to the newly formed lime sand facies, the grainstone facies shows an increase in grain size by more than 30 %, owing to precipitation of micritic lamina of possible microbial origin. Eventually, the Characeae-derived lime sands are lithified into oolitic limestones with sparry calcite cement, forming a grainstone microfacies. The present study has important implications for the interpretation of pre-Quaternary environments, as it records all stages of the fossilization process of characean green algae and highlights the role of these algae in the formation of oolitic carbonate rocks.
title: The energy analysis of burner reactor power systems
Creators: name: Mortimer, Nigel David
Publisher: name: The Open University
Year: 1978

description: Currently most commercial nuclear power stations are based on thermal reactor designs called burner reactors which are. net consumers of fissile material. These power stations form one part of a larger system that generates electricity from uraniura. However, in addition to producing energy, such systems also consume energy, in the form of various fuels, during construction and operation. This thesis describes the use of energy analysis to determine the total energy required by these systems.

A number of factors are shown to influence energy consumption and, in particular, the effect of extracting uranium from different sources is studied in detail. For ores, an important inverse relationship between energy use and ore grade is investigated and quantified. The physical limit at which the energy input to the system is equal to its output is shown to correspond to an average grade of 15 parts per million of "triuranium octoxide". Analysis of proposals for extracting uranium from seawater indicates that the only schemes giving a positive energy balance are'costly ($500/lb U308) and limited to low production rates.

The effects of feedback within fuel systems are analysed and. the results are used to formulate an economic model in which nuclear electricity prices determine uranium ore costs as well as vice versa. The model demonstrates-that, with present'techniques, the average 6 economic limit to ore grade is 50 ppm U308 with subsequent resources, on current assessment, of only 107 tonnes U308. This contradicts most traditional studies which, by assuming fixed, non-dependent fuel costs, suggest an ore grade limit of less than 4 ppm U308 and economically recoverable resources in excess of 1010 tonnes U308.
Distribution of the sheet current in a magnetically shielded superconducting filament
Creators: name: Yampolskii, S. V.
name: Genenko, Yu. A.
name: Rauh, H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The distribution of the transport current in a superconducting filament aligned parallel to the flat surface of a semi-infinite bulk magnet is studied theoretically. An integral equation governing the current distribution in the Meissner state of the filament is derived and solved numerically for various filament-magnet distances and different relative permeabilities. This reveals that the current is depressed on the side of the filament adjacent to the surface of the magnet and enhanced on the averted side. Substantial current redistributions in the filament can already occur for low values of the relative permeability of the magnet, when the distance between the filament and the magnet is short, with evidence of saturation at moderately high values of this quantity, similar to the findings for magnetically shielded strips.
description: 11 pages, 5 figures; submitted to Physica C
Graduate recitals
Creators: name: Bain, Megan Janet
Publisher: name: University of British Columbia
Year: 2011

description: The thesis for the Master of Music degree in Orchestral Instruments consists of two full-length recitals, or the equivalent, with emphasis on solo works, but also including representative chamber works. My two full-length recitals were performed on Wednesday, March 15, 2006 and Monday, August 21st, 2006.
Wood Packaging Material as a Pathway for the Movement of Exotic Insect Pests into and within the Greater Caribbean Region
Creators: name: Messiner, Heike E.
name: Culliney, Thomas W.
name: Lemay, Andrea V.
name: Newton, Leslie P.
name: Bertone, Christie A.
name: Messiner, Heike E.
name: Culliney, Thomas W.
name: Lemay, Andrea V.
name: Newton, Leslie P.
name: Bertone, Christie A.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Food Security and Poverty
subject: International Relations/Trade
subject: Wood packaging material
subject: pest interception
subject: pallets

description: Pallets, crates, and dunnage made of wood are commonly used packaging materials in international trade. Our objective was to use data collected by the United States Department of Agriculture (USDA) to discuss the current role of wood packaging material (WPM) in the movement of pest species into and within the Greater Caribbean Region. For both maritime and air cargo, significant differences were found between countries of origin in terms of the percentage of shipments that contain WPM. A list of species intercepted on WPM at U.S. ports-of-entry after full enforcement of the international standard ISPM 15, as well as a list of species associated with WPM that have the potential to establish in the Greater Caribbean Region, are presented.
A new method of measuring electric dipole moments in storage rings
Creators: name: Farley, F. J. M.
name: Jungmann, K.
name: Miller, J. P.
name: Morse, W. M.
name: Orlov, Y. F.
name: Roberts, B. L.
name: Semertzidis, Y. K.
name: Silenko, A.
name: Stephenson, E. J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A new highly sensitive method of looking for electric dipole moments of charged particles in storage rings is described. The major systematic errors inherent in the method are addressed and ways to minimize them are suggested. It seems possible to measure the muon EDM to levels that test speculative theories beyond the standard model.
description: 4 pages, Phys. Rev. Lett. 93, 052001, 2004
Search range in experimental quantum annealing
Creators: name: Chancellor, Nicholas
name: Kendon, Viv
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We construct an Ising Hamiltonian with an engineered energy landscape such that it has a local energy minimum which is near to the true global minimum solution, and further away from a false minimum. Using a technique established in previous experiments, we design our experiment such that (at least on timescales relevant to our study) the false minimum is reached preferentially in forward annealing due to high levels of quantum fluctuations. This allows us to demonstrate the key principle of reverse annealing, that the solution space can be searched locally, preferentially finding nearby solutions, even in the presence of a false minimum. The techniques used here are, to the best of our knowledge, distinct from previously used experimental techniques, and allow us to probe the fundamental search range of the device in a way which has not been previously explored. We perform these experiments on two flux qubit quantum annealers, one with higher noise levels than the other. We find evidence that the lower noise device is more likely to find the more distant energy minimum (the false minimum in this case), suggesting that reducing noise fundamentally increases the range over which flux qubit quantum annealers are able to search. Our work explains why reducing the noise leads to improved performance on these quantum annealers. This supports the idea that these devices may be able to search over broad regions of the solution space quickly, one of the core reasons why quantum annealers are viewed as a potential avenue for a quantum computational advantage.
description: 13 pages, 10 figures, now matching the final PRA submission, associated data repository can be found at http://doi.org/10.15128/r2kp78gg42f
Oxypiloidea Roy, 2013, S. S.
Creators: name: Roy, Roger
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Mantodea
Hymenopodidae
Oxypiloidea

description: KEY FOR THE MALES OF OXYPILOIDEA S. S.
1. Main tubercles of pronotum about its middle; process of vertex short or hardly elongated; process of the right side of hypophallus with at least three teeth................................. 2
— Main tubercles of pronotum distinctly after her middle; process of vertex variable in length................................................................................................................................... 5
 2. Hind process of hypophallus solid, with wide base (from Kenya to South Africa).............................................................................................. O. (O.) tridens (Saussure, 1872)
— Hind process of hypophallus long, with narrow base, curved on the right, ended by a point.......................................................................................................................... 3
 3. Pseudophallus in thick hook (from Namibia to South Africa)...................................................................................................................................... O. (O.) namibiana n. sp.
— Pseudophallus in thin hook, with bulging base (Angola)............................................ 5
 4. Pronotum with lateral sides very granular, metazone nearly twice long as prozone, main tubercles with blunt apex...................................................... O. (O.) denticulata n. sp.
 — Pronotum with lateral sides scarcely granular; metazone about 1.75 long as prozone, main tubercules acute.......................................................................... O. (O.) angolica n. sp.
5. Pronotum at most twice longer as wide, with angular sides........................................ 6
— Pronotum more than twice longer as wide.................................................................. 8
 6. Process of vertex ended by two large lobes and with two other lobes laterally (Tanzania)........................................................................... O. (O.) zernyi (Beier, 1942) n. comb.
— Process of vertex more or less elongated, with a simpler shape.................................... 7
description: Published as part of Roy, Roger, 2013, RÉVision du genre africain Oxypiloidea Schulthess, 1898 (Dictyoptera, Mantodea, Hymenopodidae), pp. 277-359 in Zoosystema 35 (3) on page 283, DOI: 10.5252/z2013n3a1, http://zenodo.org/record/4539218
Characterizing the reactivity of metallic iron in Fe0/EDTA/H2O systems with column experiments
Creators: name: Noubactep, C.
Publisher: name: FID GEO
Year: 2010

description: Characterizing the intrinsic reactivity of iron materials for environmental remediation has received relative little interest. Available results are mostly based on the removal extent of selected contaminants in batch systems. Under static conditions however, contaminant removal depends on the properties of the oxide-film. The present study was performed to investigate the chemical reactivity of nine Fe0 materials under conditions that minimize the formation of an oxide-film on the metal surface. Ethylenediaminetetraacetate (EDTA) was used to sustain Fe0 dissolution during column testing for two months. The results confirm Fe0 dissolution rate in 2 mM EDTA as a good tool for comparative reactivity characterization. Moreover, long-term column studies with 2 mM EDTA enable: (i) the evidence of increased powdered Fe0 reactivity relative to granular materials, and (ii) a clear differentiation among granular materials which exhibited very closed extents of iron dissolution under static conditions. Future works comparing Fe0 intrinsic reactivity should ideally characterize material behaviour in an oxide-free system and compare the results to those obtained under relevant experimental conditions.
Arecibo 430 MHz Pulsar Polarimetry: Faraday Rotation Measures and Morphological Classifications
Creators: name: Weisberg, J. M.
name: Cordes, J. M.
name: Kuan, B.
name: Devine, K. E.
name: Green, J. T.
name: Backer, D. C.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have measured Faraday Rotation Measures (RMs) at Arecibo Observatory for 36 pulsars, 17 of them new. We combine these and earlier measurements to study the galactic magnetic field and its possible temporal variations. Many RM values have changed significantly on several-year timescales, but these variations probably do not reflect interstellar magnetic field changes. By studying the distribution of pulsar RMs near the plane in conjunction with the new NE2001 electron density model, we note the following structures in the first galactic longitude quadrant: (1) The local field reversal can be traced as a null in RM in a 0.5-kpc wide strip interior to the Solar Circle, extending \~7 kpc around the Galaxy. (2) Steadily increasing RMs in a 1-kpc wide strip interior to the local field reversal, and also in the wedge bounded by 42
description: Accepted by Astrophysical Journal Supplement, 56 pages, 22 figs