cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Formation of embryos of the Earth and the Moon from the common rarefied condensation and their subsequent growth
Creators: name: Ipatov, S. I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Embryos of the Moon and the Earth may have formed as a result of contraction of a common parental rarefied condensation. The required angular momentum of this condensation could largely be acquired in a collision of two rarefied condensations producing the parental condensation. With the subsequent growth of embryos of the Moon and the Earth taken into account, the total mass of as-formed embryos needed to reach the current angular momentum of the Earth-Moon system could be below 0.01 of the Earth mass. For the low lunar iron abundance to be reproduced with the growth of originally iron-depleted embryos of the Moon and the Earth just by the accretion of planetesimals, the mass of the lunar embryo should have increased by a factor of 1.3 at the most. The maximum increase in the mass of the Earth embryo due to the accumulation of planetesimals in a gas-free medium is then threefold, and the current terrestrial iron abundance is not attained. If the embryos are assumed to have grown just by accumulating solid planetesimals (without the ejection of matter from the embryos), it is hard to reproduce the current lunar and terrestrial iron abundances at any initial abundance in the embryos. For the current lunar iron abundance to be reproduced, the amount of matter ejected from the Earth embryo and infalling onto the Moon embryo should have been an order of magnitude larger than the sum of the overall mass of planetesimals infalling directly on the Moon embryo and the initial mass of the Moon embryo, which had formed from the parental condensation, if the original embryo had the same iron abundance as the planetesimals. The greater part of matter incorporated into the Moon embryo could be ejected from the Earth in its multiple collisions with planetesimals (and smaller bodies).
description: 16 pages
title: Learning and Teaching Online: Structuring Computer-Mediated Communication Systems to Support Interaction at a Distance
Creators: name: Wilson, Martina E.
Publisher: name: The Open University
Year: 2002

description: The aim of this thesis is to investigate the effects and benefits of different ways of structuring conferences in Computer Mediated Communication (CMC) environments for learning. To this end, the thesis uses two studies of a conventional distance learning course in undergraduate computer science which was supplemented with a structured CMC environment. The research was undertaken over a period of twenty months. Tile first theme of the thesis is an investigation of the possibilities of using conference structures to improve navigation and organisation. The second theme of the thesis investigates the likely benefits of such structuring. Categorical analysis was used to find out the extent to which this structure was beneficial to students. The effects and benefits of various CMC structures were assessed through analysis of data collected using a variety of techniques- observation, user opinions, and interpretation of naturally occurring online interactions. Categorical analysis was undertaken with rich data on actual behaviour obtained from online conferences and compared with students' perceptions gathered through open responses in interviews and questionnaires. The categorical analysis used an approach influenced by grounded theory. The pilot study revealed the need for a new staff role to support the structured CMC. This role, called the Interactive Media Facilitator (IMF), was created during the course of the study to design the CMC structure and monitor activity within the structure. A conceptual framework consisting of a three-dimensional taxonomy was created and used to guide the IMF in the development of the broad conference structure in the main study. The framework was also used to organise the fine detail of the different discussion areas within the CMC structure. This taxonomy, developed from elements of online interaction types found in the CMC literature, is a generalisable framework, applicable in a distance learning context to any electronically supplemented course.
The Taming of Closed Time-like Curves
Creators: name: Biswas, Rahul
name: Keski-Vakkuri, Esko
name: Leigh, Robert G.
name: Nowling, Sean
name: Sharpe, Eric
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider a $R^{1,d}/Z_2$ orbifold, where $Z_2$ acts by time and space reversal, also known as the embedding space of the elliptic de Sitter space. The background has two potentially dangerous problems: time-nonorientability and the existence of closed time-like curves. We first show that closed causal curves disappear after a proper definition of the time function. We then consider the one-loop vacuum expectation value of the stress tensor. A naive QFT analysis yields a divergent result. We then analyze the stress tensor in bosonic string theory, and find the same result as if the target space would be just the Minkowski space $R^{1,d}$, suggesting a zero result for the superstring. This leads us to propose a proper reformulation of QFT, and recalculate the stress tensor. We find almost the same result as in Minkowski space, except for a potential divergence at the initial time slice of the orbifold, analogous to a spacelike Big Bang singularity. Finally, we argue that it is possible to define local S-matrices, even if the spacetime is globally time-nonorientable.
description: 37 pages, LaTeX2e, uses amssymb, amsmath and epsf macros, 8 eps and 3 ps figures; (v2): Two additional comments + one reference added; (v3): corrections in discussion of CTCs + some clarifications
Eisenhower Symposium welcome and keynote address
Creators: name: Goodman, Louis Wolf
name: Hagel, 1946-, Chuck
Publisher: name: American University
Year: 2023

description: Panel on topic The Path Taken and Not: President Dwight Eisenhower’s Visions of International Relations. Chair: Louis W. Goodman, American University. Keynote speaker: Senator Chuck Hagel.
El Cultivo del Ñame (Dioscorea spp.) y De Otoe (Xanthosoma spp.) en la Provincia de Herrera, Panama
Creators: name: Jimenez, J.M.
name: Rodriguez, W.G.
name: Jimenez, J.M.
name: Rodriguez, W.G.
Publisher: name: Unknown
Year: 1984
Subjects: subject: Crop Production/Industries
subject: Farm Management
subject: Farming systems description
subject: Tannia
subject: Yams
subject: Panamá
subject: Rooc Crops

description: During 1982, 30% of the commercial producers of yams (Dioscorea spp) and tannia (Xanthosoma spp.) in the Herrera province of Panamá were surveyed in order to describe their farming systems, agroecosystems and management practices. Yams are planted without supports, generally associated with maize (Zea mays) or pigeon pea (Cajanus cajan) in 82 % of the samples; anthracnosis and weeds are the main problems that limit production. Tannia are less important (16% of the samples). Both products were for the national market.
Eisenhower Symposium welcome and keynote address
Creators: name: Goodman, Louis Wolf
name: Hagel, 1946-, Chuck
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 4408
subject: Political science
subject: FOS: Political science

description: Panel on topic The Path Taken and Not: President Dwight Eisenhower’s Visions of International Relations. Chair: Louis W. Goodman, American University. Keynote speaker: Senator Chuck Hagel.
The continuous-time frog model can spread arbitrarily fast
Creators: name: Bezborodov, Viktor
name: Di Persio, Luca
name: Krueger, Tyll
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K35, 82C22

description: The aim of this work is to demonstrate that the continuous-time frog model can spread arbitrary fast. The set of sites visited by an active particle can become infinite in a finite time.
description: 8 pages
The Environment of AGNs in the Sloan Digital Sky Survey
Creators: name: Miller, Christopher J.
name: Nichol, Robert C.
name: Gomez, Percy
name: Hopkins, Andrew
name: Bernardi, Mariangela
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the observed fraction of galaxies with an Active Galactic Nucleus (AGN) as a function of environment in the Early Data Release of the Sloan Digital Sky Survey (SDSS). Using 4921 galaxies between 0.05 <= z <= 0.095, and brighter than M_r* = -20.0 (or M* +1.45), we find at least ~ 20% of these galaxies possess an unambiguous detection of an AGN, but this fraction could be as high as ~40% after we model the ambiguous emission line galaxies in our sample. We have studied the environmental dependence of galaxies using the the distance to the 10^th nearest neighbor. As expected, we observe that the fraction of star--forming galaxies decreases with density, while the fraction of passive galaxies increases with density. In contrast, the fraction of galaxies with an AGN remains constant from the cores of galaxy clusters to the rarefied field population. We conclude that the presence of an AGN is independent of the disk component of a galaxy. Our analyses are robust against measurement error, definition of an AGN, aperture bias, stellar absorption, survey geometry and signal--to--noise. Our observations are consistent with the hypothesis that a supermassive black hole resides in the bulge of all massive galaxies and ~40% of these black holes are seen as AGNs in our sample. A high fraction of local galaxies with an AGN suggests that either the mean lifetime of these AGNs is longer than previously thought (>10^8 years), or that the AGN burst more often than expected; ~40 times over the redshift range of our sample.
description: Accepted for publication in ApJ. 10 pages, 12 Figures. Uses emulateapj.cls
title: Firm-Specific Shocks and Aggregate Fluctuations
Creators: name: Karasik, Leonid
name: Leung, Danny
name: Tomlin, Ben
Publisher: name: Bank of Canada
Year: 2016

description: In order to understand what drives aggregate fluctuations, many macroeconomic models point to aggregate shocks and discount the contribution of firm-specific shocks. Recent research from other developed countries, however, has found that aggregate fluctuations are in part driven by idiosyncratic shocks to large firms. Using data on Canadian firms, this paper examines the contribution of large firms to industry-level fluctuations in gross output, investment and employment in the manufacturing sector. The data suggest that shocks to large firms can explain as much as 46% and 37% of the fluctuations in gross output and investment, respectively, but do not contribute to fluctuations in employment.
description: Pour comprendre ce qui entraîne les fluctuations agrégées, de nombreux modèles macroéconomiques se tournent vers les chocs agrégées sans tenir compte de la contribution des chocs propres à l’entreprise. De récentes recherches menées par d’autres pays développés ont, toutefois, permis de constater que les fluctuations agrégées sont en partie attribuables aux chocs encaissés par les grandes entreprises. À l’aide de données sur des entreprises canadiennes, cet article examine la contribution des grandes entreprises aux fluctuations sectorielles de la production brute, de l’investissement et de l’emploi dans le secteur de la fabrication. Les données laissent supposer que les chocs encaissés par les grandes entreprises peuvent expliquer jusqu’à 46 % et 37 % des fluctuations de la production brute et de l’investissement, respectivement, sans toutefois contribuer aux fluctuations de l’emploi.
Additional file 4 of Near patient chlamydia and gonorrhoea screening and treatment in further education/technical colleges: a cost analysis of the ‘Test n Treat’ feasibility trial
Creators: name: Kerry-Barnard, Sarah
name: Huntington, Susie
name: Fleming, Charlotte
name: Reid, Fiona
name: S. Tariq Sadiq
name: Vari M. Drennan
name: Adams, Elisabeth
name: Oakeshott, Pippa
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 4. Practical Notes and Considerations. A description of some practical details and considerations to be taken into account when implementating the TnT service in a real-world setting.
El Cultivo del Tiquisque (Xanthosoma spp.), la Malanga (Colocasia esculenta), el Ñame (Dioscorea spp) y el Plátano (Musa sp AAB) en Costa Rica
Creators: name: Jimenez, J.M.
name: Rodriguez, A.
name: Rodriguez, W.G.
name: Jimenez, J.M.
name: Rodriguez, A.
name: Rodriguez, W.G.
Publisher: name: Unknown
Year: 1984
Subjects: subject: Crop Production/Industries
subject: Farm Management
subject: Farming systems description
subject: tannia
subject: yams
subject: Plantain
subject: Costa Rica
subject: Root Crops

description: During 1982, 24 and 30% of the tannia (Xanthosoma spp), taro (Colocasia esculenta) and yams (Dioscorea spp) comercial producers were surveyed in the Atlantic and Northern Regions of Costa Rica, respectively. This information was used to describe the farm system, agroecosystems and management. Production of ataceas in the north is for national consumption while that of the Atlantic Region is for exportation. Yams are produced only in the Atlantic Region, especially for exportation. Weeds and diseases are the principal production problems for these crops.
title: Can the Common-Factor Hypothesis Explain the Observed Housing Wealth Effect?
Creators: name: Bulusu, Narayan
name: Duarte, Jefferson
name: Vergara-Alert, Carles
Publisher: name: Bank of Canada
Year: 2016

description: The common-factor hypothesis is one possible explanation for the housing wealth effect. Under this hypothesis, house price appreciation is related to changes in consumption as long as the available proxies for the common driver of housing and non-housing demand are noisy and housing supply is not perfectly elastic. We simulate a model in which a common factor drives the relation between house prices and consumption to examine the extent to which the common-factor hypothesis can explain the housing wealth effect. Our results indicate that the common-factor hypothesis can easily explain the strong housing wealth effect estimated with US state-level data.
description: L’hypothèse du facteur commun offre une piste pour comprendre l’effet de richesse immobilière. Selon cette hypothèse, l’appréciation du prix des logements est corrélée à l’évolution de la consommation tant que les variables d’approximation du facteur commun à la demande de logements et à la demande hors logements sont mesurées de manière imprécise et que l’offre de logement n’est pas parfaitement élastique. Nous procédons à une modélisation afin d’évaluer la validité de l’hypothèse du facteur commun. Dans le modèle, la relation entre les prix des logements et la consommation est déterminée par un facteur commun. D’après les résultats, l’hypothèse du facteur commun permet de bien expliquer l’importance de l’effet de richesse immobilière estimé à partir de données des États américains.
Black Brane World from Gravitating Half $σ$-lump
Creators: name: Kim, Donghyun
name: Kim, Yoonbai
name: Lee, JungJai
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study O($N+1$) nonlinear $σ$-model in $(p+1+N)$-dimensional curved spacetime with negative cosmological constant, and find a new $σ$-lump solution with half-integer winding and divergent energy. When the spatial structure of $N$ extra-dimensions is determined by this global defect, a black $σp$-brane surrounded by the degenerated horizon is formed and its near-horizon geometry is identified as a warp geometry of cigar type.
description: 23 pages, 4 figures, Published version
El Cultivo del Quequisque (Xanthosoma spp.) y Plátano (Musa sp AAB) en el Trópico Húmedo y Bajo de Nicaragua
Creators: name: Jimenez, J.M.
name: Rodriguez, W.G.
name: Jimenez, J.M.
name: Rodriguez, W.G.
Publisher: name: Unknown
Year: 1984
Subjects: subject: Crop Production/Industries
subject: Farm Management
subject: Farming systems description
subject: Tannia
subject: Plantain
subject: Nicaragua
subject: Root Crops

description: During 1982, 25% of the commercial producers of tannia (Xanthosoma spp) and plantain (Musa sp AAB) in Nueva Guinea, Nicaragua were surveyed in order to describe their farming systems, agroecosystems and management practices. Cocoyam is planted in 1 ha. parcels especially in May and June. Marketing is the principal limiting factor with this crop. Plantain is planted in 1,6 ha. parcels, with no defined date of planting. Plantain populations used were 880 pi/ha. The most common cultivars, 'criollo' and '300', are susceptible to Black Sigatoka, the principal agronomic problem for this crop.
Petrocephalus okavangensis Kramer & Bills & Skelton & Wink 2012, sp. nov.
Creators: name: Kramer, Bernd
name: Bills, Roger
name: Skelton, Paul
name: Wink, Michael
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Osteoglossiformes
Mormyridae
Petrocephalus
Petrocephalus okavangensis

description: Petrocephalus okavangensis sp. nov.
 SAIAB 030046, holotype, specimen R22, 6.1 cm SL, Botswana, Okavango, Thoage River, Nguma (Guma) Lagoon, 18 ◦ 56 ′ 60 ′′ S, 22 ◦ 22 ′ 59.99 ′′ E, 3 January 1987, coll. G. Merron,
 SAIAB 186062 (41), paratypes, 4.2–7.8 cm SL, Botswana, Okavango, Thoage River, Nguma (Guma) Lagoon, 18 ◦ 56 ′ 60 ′′ S, 22 ◦ 22 ′ 59.99 ′′ E, 3 January 1987, coll. G. Merron,
 Non-types: ZSM 38665(3), 8.0– 8.1 cm SL, Botswana, Okavango, Thoage River, Guma Lagoon, 18 ◦ 57 ′ 46.6 ′′ S, 22 ◦ 22 ′ 25.3 ′′ E, 10 August 2004, coll. F. H. Van der Bank and B. Kramer,
 one specimen for EOD only, Botswana, Okavango, Thoage River, 19 ◦ 03 ′ 45.3 ′′ S, 22 ◦ 23 ′ 24.3 ′′ E, 23 March 2002, 26 ◦ C water temperature, 50 µS / cm, EOD recorded 7 March 2003 Regensburg,
 one specimen for EOD only, Botswana, Okavango, Thoage River, Guma Lagoon, 18 ◦ 57 ′ 46.6 ′′ S, 22 ◦ 22 ′ 25.3 ′′ E, 17.1 ◦ C water temperature, 38 µS / cm, EOD recorded 12 August 2004,
 SAIAB 36841 (24), 3.7–6.6 cm SL, Namibia, Okavango River, Popa Rapids, 18 ◦ 06 ′ 00 ′′ S, 21 ◦ 36 ′ 00 ′′ E, 15 July 1986, coll. P. Skelton,
SAIAB 36823 (12), 3.6–7.8 cm SL, same location, second island, 14 July 1986, coll. T. Andrew, G. Merron, P. Skelton,
 SAIAB 19769 (21), 4.5–8.3 cm SL, Botswana, Okavango Delta, Moanachira River, Gadikwe Lagoon, mid island 19 ◦ 10 ′ 00 ′′ S, 23 ◦ 14 ′ 00 ′′ E, 3 November 1983, coll. G. Merron,
 SAIAB 19705 (11), 5.6–9.5 cm SL, Botswana, Okavango Delta, Moremi Game Reserve, Xakanixa Channel, opposite Safari Lodge, upper swamp 19 ◦ 10 ′ 00 ′′ S, 23 ◦ 24 ′ 00 ′′ E, 2 November 1983, coll. G. Merron,
 SAIAB 21271 (38), 3.6–9.3 cm SL, Botswana, Okavango Delta, Moremi Game Reserve, Xakanixa River, 19 ◦ 15 ′ 00 ′′ S, 23 ◦ 15 ′ 00 ′′ E, 24 June 1984, coll. G. Merron and G. May.
description: Published as part of Kramer, Bernd, Bills, Roger, Skelton, Paul & Wink, Michael, 2012, A critical revision of the churchill snoutfish, genus Petrocephalus Marcusen, 1854 (Actinopterygii: Teleostei: Mormyridae), from southern and eastern Africa, with the recognition of Petrocephalus tanensis, and the description of five new species, pp. 2179-2258 in Journal of Natural History 46 (35 - 36) on page 2192, DOI: 10.1080/00222933.2012.708452, http://zenodo.org/record/4590828
title: Managing Risk Taking with Interest Rate Policy and Macroprudential Regulations
Creators: name: Cociuba, Simona E.
name: Shukayev, Malik
name: Ueberfeldt, Alexander
Publisher: name: Bank of Canada
Year: 2016

description: We develop a model in which a financial intermediary’s investment in risky assets—risk taking—is excessive due to limited liability and deposit insurance and characterize the policy tools that implement efficient risk taking. In the calibrated model, coordinating interest rate policy with state-contingent macroprudential regulations, either capital or leverage regulation, and a tax on profits achieves efficiency. Interest rate policy mitigates excessive risk taking by altering both the return and the supply of collateralizable safe assets. In contrast to commonly used capital regulation, leverage regulation has stronger effects on risk taking and calls for higher interest rates.
description: Nous construisons un modèle dans lequel les montants des placements en actifs risqués effectués par un intermédiaire financier ‒ la prise de risques ‒ sont excessifs en raison d’une limitation de la responsabilité et de l’assurance-dépôts. Nous définissons également les instruments de politique qui permettent une prise de risques efficiente. Dans ce modèle étalonné, coordonner la politique de taux d’intérêt avec une réglementation macroprudentielle conditionnelle à l’état de l’économie – qu’il s’agisse de la réglementation des fonds propres, de celle du levier financier ou de l’impôt sur les bénéfices – permet d’atteindre l’efficience. La politique de taux d’intérêt atténue la prise de risques excessifs en influant sur l’offre d’actifs sûrs pouvant servir de garanties, ainsi que sur leur rendement. Contrairement à la réglementation des fonds propres couramment utilisée, la réglementation du levier financier a des effets plus importants sur la prise de risques et nécessite le relèvement des taux d’intérêt.
On the scalability of CFD tool for supersonic jet flow configurations
Creators: name: Junqueira-Junior, Carlos
name: Azevedo, João Luiz F.
name: Panetta, Jairo
name: Wolf, William R.
name: Yamouni, Sami
Publisher: name: arXiv
Year: 2020
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: New regulations are imposing noise emissions limitations for the aviation industry which are pushing researchers and engineers to invest efforts in studying the aeroacoustics phenomena. Following this trend, an in-house computational fluid dynamics tool is build to reproduce high fidelity results of supersonic jet flows for aeroacoustic analogy applications. The solver is written using the large eddy simulation formulation that is discretized using a finite difference approach and an explicit time integration. Numerical simulations of supersonic jet flows are very expensive and demand efficient high-performance computing. Therefore, non-blocking message passage interface protocols and parallel Input/Output features are implemented into the code in order to perform simulations which demand up to one billion grid points. The present work addresses the evaluation of code improvements along with the computational performance of the solver running on a computer with maximum theoretical peak of 2.727 PFlops. Different mesh configurations, whose size varies from a few hundred thousand to approximately one billion grid points, are evaluated in the present paper. Calculations are performed using different workloads in order to assess the strong and weak scalability of the parallel computational tool. Moreover, validation results of a realistic flow condition are also presented in the current work.
description: 13 pages journal article. arXiv admin note: text overlap with arXiv:2003.08746
GMRT observations of the field of INTEGRAL X-ray sources- I
Creators: name: Pandey, M.
name: Manchanda, R. K.
name: Rao, A. P.
name: Durouchoux, P.
name: Ishwara-Chandra
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The INTEGRAL observatory has discovered a variety of hard X-ray sources in the Galactic plane since its launch. Using GMRT, we have made repeated observations of these sources to search for the radio counterparts of seventeen of them at low frequencies. The source positions were taken from the various ATEL and IAUC reporting their discovery. Possible radio counterparts for seven of these sources namely, IGR J06074+2205, IGR J15479-4529, IGR J16479-4514, IGR J17091-3624, IGR J18027-1455, IGR J18539+0727 and IGR J21247+5058 were detected within 3$σ$ of the position uncertainty derived from the INTEGRAL observations. The offset in the radio position was calculated using the positions mentioned in the ATEL. We have also analyzed the available NVSS images for a few of these fields at 1.4 GHz along with our observations. In this paper we present the radio images and the best fit positions for the positive detections. The X-ray variability for few of the sources within the time scales of 100 s to 1 ks as seen in the RXTE/PCA light curves suggests their Galactic origin and possible binary nature. We discuss briefly the characteristics of these sources from the available information at different wave bands.
description: 14 pages, 10 figures,accepted in A&A
Petrocephalus petersi Kramer & Bills & Skelton & Wink 2012, sp. nov.
Creators: name: Kramer, Bernd
name: Bills, Roger
name: Skelton, Paul
name: Wink, Michael
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Osteoglossiformes
Mormyridae
Petrocephalus
Petrocephalus petersi

description: Petrocephalus petersi sp. nov.
 SAIAB 060846, holotype, specimen R1, 6.4 cm SL, Mozambique, stream near campsite 1, edge of wet Zambezi River System, Zambezi River, 18 ◦ 33 ′ 54 ′′ S, 35 ◦ 39 ′ 46 ′′ E, 1 August 1999, coll. R. Bills,
 SAIAB 186054 (10), paratypes, 4.1–6.1 cm SL, Mozambique, stream near campsite 1, edge of wet Zambezi River System, Zambezi River, 18 ◦ 33 ′ 54 ′′ S, 35 ◦ 39 ′ 46 ′′ E, 1 August 1999, coll. R. Bills,
 SAIAB 055875 (4), non-types, 7.1–7.3 cm SL, Mozambique, Zambesia, Mulela Village, Mulela River, Mulalae, 16 ◦ 53 ′ 42 ′′ S, 38 ◦ 17 ′ 27 ′′ E, 20 July 1997, coll. R. Bills.
description: Published as part of Kramer, Bernd, Bills, Roger, Skelton, Paul & Wink, Michael, 2012, A critical revision of the churchill snoutfish, genus Petrocephalus Marcusen, 1854 (Actinopterygii: Teleostei: Mormyridae), from southern and eastern Africa, with the recognition of Petrocephalus tanensis, and the description of five new species, pp. 2179-2258 in Journal of Natural History 46 (35 - 36) on page 2193, DOI: 10.1080/00222933.2012.708452, http://zenodo.org/record/4590828
Additional file 3 of Near patient chlamydia and gonorrhoea screening and treatment in further education/technical colleges: a cost analysis of the ‘Test n Treat’ feasibility trial
Creators: name: Kerry-Barnard, Sarah
name: Huntington, Susie
name: Fleming, Charlotte
name: Reid, Fiona
name: S. Tariq Sadiq
name: Vari M. Drennan
name: Adams, Elisabeth
name: Oakeshott, Pippa
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 3 Supplementary Table 2. Processes required to deliver Test n Treat as research and as a service. All the procedures performed in the study by either patient or staff are listed in Supplementary Table 2, the time taken to perform the task, the type of delivery and the people involved are also listed.
A concordance scenario for the observed neutrino from a Tidal Disruption Event
Creators: name: Winter, Walter
name: Lunardini, Cecilia
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: During a tidal disruption event, a star is torn apart by the tidal forces of a supermassive black hole, with about 50% of the star's mass eventually accreted by the black hole. The resulting flare can, in extreme cases of super-Eddington mass accretion, result in a relativistic jet. While tidal disruption events have been theoretically proposed as sources of high-energy cosmic rays and neutrinos, stacking searches indicate that their contribution to the diffuse extragalactic neutrino flux is very low. However, a recent association of a track-like astrophysical neutrino with a tidal disruption event (AT2019dsg) indicates that some tidal disruption events can accelerate cosmic rays to PeV energies. Here we introduce a phenomenological concordance scenario with a relativistic jet to explain this association: an expanding cocoon progressively obscures the X-rays emitted by the accretion disk, while at the same time providing a sufficiently intense external target of back-scattered X-rays for the production of neutrinos via proton-photon interactions. We also reproduce the delay (relative to the peak) of the neutrino emission by scaling the production radius with the black body radius. Our energetics and assumptions for the jet and the cocoon are compatible with expectations from numerical simulations of tidal disruption events.
description: LaTeX, 25 pages, 3 figures. One figure and various clarifications added. Title and text modified to meet journal requirements. Results unchanged. Version accepted for publication in Nature Astronomy; available at https://www.nature.com/articles/s41550-021-01305-3 . Free read-only access at https://rdcu.be/cfDWF
Additional file 5 of Novel monoclonal antibodies against thymidine kinase 1 and their potential use for the immunotargeting of lung, breast and colon cancer cells
Creators: name: Velazquez, Edwin J.
name: Brindley, Taylor D.
name: Shrestha, Gajendra
name: Bitter, Eliza E.
name: Cress, Jordan D.
name: Townsend, Michelle H.
name: Berges, Bradford K.
name: Robison, Richard A.
name: Weber, K. Scott
name: O’Neill, Kim L.
Publisher: name: figshare
Year: 2020
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 5. Flow cytometry analysis of HT-29 cells with the custom TK1 antibodies.
Use of Bacillus thuringiensis in Pest Management of the Tomato Ecosystem in Trinidad
Creators: name: Jones, Mona T.
name: Jones, Mona T.
Publisher: name: Unknown
Year: 1984
Subjects: Crop Production/Industries
Research and Development/Tech Change/Emerging Technologies

description: Major pests of tomatoes in Trinidad include: the pin worm, Keiferia lycopersicella: the army worm, Spodoptera eridania; the fruit worm, Heliothis virescens; leaf miners, Liromyza spp.; fruit piercing bugs, Nezera viridula, and Phthia picta; the mole cricket, Scapteriscus vicinus. Commercial producers have resorted to excessive application of chemical pesticides with consequent increase in leaf miner infestations, serious outbreaks of mites and developing resistances in mole cricket populations. Too frequent use of pesticides is also a deterrent to implementation of classical biological control. Utilization of the relatively specific bacterial insecticide, Bacillus thuringiensis, seems encouraging as a pest control strategy for the tomato ecosystem.
USDA Initiatives to Assist Small Scale Agriculture
Creators: name: Kerr Jr., Howard W.
name: Kerr Jr., Howard W.
Publisher: name: Unknown
Year: 1984
Subjects: Agricultural and Food Policy
Teaching/Communication/Extension/Profession

description: Dr. Orville G. Bentley, Assistant Secretary, Science and Education Department, recently announced the creation of a USDA Working Group on Small Farm Resource Development. The Working Group is responsible for 1) providing program and policy leadership and facilitating communications for USDA on Small Farm Resource Development; 2) identifying existing programs and activities in order to determine what steps should be taken to strengthen support for small farm operators; 3) establishing an orderly method to provide technical assistance and information to small farm operators; 4) recommending steps USDA should take to further address this national concern; and 5) reviewing, and as feasible, implementing the pertinent recommendations filed by the various Departmental Task Forces bearing upon small-scale agriculture. The effort is relatively new; however, the gains are already significant. Discussed were achievements and how the Working Group may impact or benefit "Small Farm Systems in the Caribbean."
The logistic equation and a linear stochastic resonance
Creators: name: Gora, P. F.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We show analytically that a linear transmitter with correlated Gaussian white noises displays a stochastic resonance. We discuss the relation of this problem to a generalized noisy logistic equation.
description: 13 pages and 3 EPS figures, submitted to Acta Phys. Pol. B
The Quest for Increased Food Production in the Caribbean
Creators: name: Kigoda, Mokiwa A.
name: Blase, Melvin G.
name: Kigoda, Mokiwa A.
name: Blase, Melvin G.
Publisher: name: Unknown
Year: 1984
Subjects: Agricultural and Food Policy
Crop Production/Industries
Research and Development/Tech Change/Emerging Technologies

description: The issue of economic incentives and improved technology for increasing small farmers' food production has dominated the small farming systems in the developing world. However, the agricultural policies for small farmers encounter priority problems in the form of major constraints on food production. The question is either to: (1) concentrate on increased output prices and input subsidies, or (2) replace crude tool technology (hand hoe, bush machete, etc.) with bottleneck-breaking technology in order to increase small farmers' food production. Recommendations favor increased output prices to increase food production. In labor surplus, hand hoe technology-oriented economies, prices paid to food producers affect output up to a level dictated by physical and technical factors. Crude tool technology creates physical constraints upon the supply of food and limits the production capacity. A study using linear programming indicated little or no additional food production is likely to be forthcoming due to labor shortages for key activities during crop year, e.g., weeding, harvesting, etc. In order to obtain sustained increases in food production, it is necessary to introduce bottleneck- breaking technology that performs better than crude tool technology now being used. This should precede the other policies to ensure increased levels of food production.
Non-Traditional Agriculture for the Caribbean
Creators: name: Krochmal, Arnold
name: Krochmal, Connie
name: Krochmal, Arnold
name: Krochmal, Connie
Publisher: name: Unknown
Year: 1984
Subjects: Crop Production/Industries
International Development
Teaching/Communication/Extension/Profession

description: Non-traditional agriculture is a multi-phased approach to the production of farm crops, and their marketing. Here we refer only to plant crops, not animal. There are parallel approaches required to insure maximum possibility of a successful and continuing program. Rather than being compartmentalized, techniques required include information on production possibilities, market needs, packing and grading standards, shipment to markets and subsequent sales. Best results usually follow from using a crop somewhat familiar in cultural requirements to those grown by local farmers, and one for which there is an existing market. Packaging and grading must be uniform and are often best served by being done at one central point. One of the promising areas of production is the harvesting of marketable forest understory plants concurrently with planting of small plots of the same plant to produce a marketable volume.
Additional file 1 of Tablet vs. station-based laptop ultrasound devices increases internal medicine resident point-of-care ultrasound performance: a prospective cohort study
Creators: name: Glogoza, Matt
name: Urbach, Jonathan
name: Rosborough, Terry K.
name: Olet, Susan
name: Hill, Catherine A. St.
name: Smith, Claire S.
name: Tierney, David M.
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer

description: Additional file 1: Digital Content S1. “IMBUS Certification Areas & Items”. Listing of exam items by area that are tracked within the IMBUS program for certification. Minimum number of exams required to be eligible for certification assessment within each exam item is listed. Achievement of minimum quantities is requisite for but not the only aspect required for certification in the item. Core elements noted are required for residency graduation.
Potentials for Beekeeping Expansion in the Caribbean
Creators: name: Krochmal, Connie
name: Krochmal, Arnold
name: Krochmal, Connie
name: Krochmal, Arnold
Publisher: name: Unknown
Year: 1984
Subjects: International Development

description: The advantage of increased beekeeping is that it is a small-scale farm and rural activity which can be established at low cost, and does not require private land ownership at all. In the Caribbean, the Dominican Republic is by far the largest honey producer, with substantial production of beeswax, both of which move into the overseas market, generating hard currency. The recent development of pollen export in that country is another important source of foreign currency. A first step required is the development of a source of package bees and queens, and the needed hardware for hives and associated activities. A second and major step is to inventory the local nectar and pollen plants, as well as time of nectar flow. Bees make honey from nectar, not pollen as a forester erroneously reported in a U.S. Department of Agriculture report. The first author has prepared such a study for Puerto Rico, and a preliminary one for the Caribbean area.
Petrocephalus tanensis
Creators: name: Kramer, Bernd
name: Bills, Roger
name: Skelton, Paul
name: Wink, Michael
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Osteoglossiformes
Mormyridae
Petrocephalus
Petrocephalus tanensis

description: Petrocephalus tanensis (Whitehead and Greenwood, 1959), elevated to species rank
 Holotype BMNH 1963.11.29.1, Petrocephalus catostoma tanensis Whitehead and Greenwood, 1959, 6.7 cm SL, Lower Tana River, Garsen, Kenya; BMNH 1963.11.29.2-8, 8 paratypes, 3.0– 4.5 cm SL, same locality,
 Non-types: NMK nos 24102, 24108, 24109, 24111, 24112, 24126, 24143, 24144, 24151, 24159, 23902, 23903, 23905, 23906, 23910, 23911, 23912, 23913, 239NotLegible, 23915, 6371, 6372, 6373, 6375, 6378, 63713, 63714, 63715, 63717, 29 specimens of “ Petrocephalus catostoma tanensis ”, 5.6–8.1 cm SL, Kenya, Lower Tana River, Garsen,
 ZSM 38661(3), Ta 01na, Ta 04na, Ta09na, 8.0– 8.2 cm SL; ZSM 38662(3), Ta 15na, Ta 17na, Ta26na, 8.3–9.7 cm SL; ZSM 38663(1), Ta 06na, 9.6 cm SL; ZSM 38664(2), Ta 39na, Ta 44na, 6.6–6.7 cm SL; SAIAB 85906 (8), Ta35na, Ta36na, Ta37na, Ta38na, Ta40na, Ta41na, Ta42na, Ta43na, 5.8–8.5 cm SL; SAIAB 8907 (5), Ta 02na, Ta 03na, Ta 05na, Ta07na, Ta 08na, 8.3–8.8 cm SL, SAIAB 85908 (5), SinEOD2, SinEOD3, SinEOD6, R1, R2, 6.4–9.8 cm SL; Lower Tana River at Tana Primate Research Reserve near village Wenje, east of road B8, 1 ◦ 52 ′ 38.1 ′′ S, 40 ◦ 8 ′ 22.5 ′′ E, 48 m above sea level, 3–6 September 2001, coll. L. De Vos and B. Kramer, 23 specimens for EOD, 186 µS / cm and 25.7 ◦ C
description: Published as part of Kramer, Bernd, Bills, Roger, Skelton, Paul & Wink, Michael, 2012, A critical revision of the churchill snoutfish, genus Petrocephalus Marcusen, 1854 (Actinopterygii: Teleostei: Mormyridae), from southern and eastern Africa, with the recognition of Petrocephalus tanensis, and the description of five new species, pp. 2179-2258 in Journal of Natural History 46 (35 - 36) on page 2193, DOI: 10.1080/00222933.2012.708452, http://zenodo.org/record/4590828
The space of almost calibrated $(1,1)$ forms on a compact Kähler manifold
Creators: name: Chu, Jianchun
name: Collins, Tristan C.
name: Lee, Man-Chun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics

description: The space $\mathcal{H}$ of "almost calibrated" $(1,1)$ forms on a compact Kähler manifold plays an important role in the study of the deformed Hermitian-Yang-Mills equation of mirror symmetry as emphasized by recent work of the second author and Yau, and is related by mirror symmetry to the space of positive Lagrangians studied by Solomon. This paper initiates the study of the geometry of $\mathcal{H}$. We show that $\mathcal{H}$ is an infinite dimensional Riemannian manifold with non-positive sectional curvature. In the hypercritical phase case we show that $\mathcal{H}$ has a well-defined metric structure, and that its completion is a ${\rm CAT}(0)$ geodesic metric space, and hence has an intrinsically defined ideal boundary. Finally, we show that in the hypercritical phase case $\mathcal{H}$ admits $C^{1,1}$ geodesics, improving a result of the second author and Yau. Using results of Darvas-Lempert we show that this result is sharp.
description: 50 pages
Curved Buildings Reconstruction from Airborne LiDAR Data by Matching and Deforming Geometric Primitives
Creators: name: Song, Jingwei
name: Xia, Shaobo
name: Wang, Jun
name: Chen, Dong
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Airborne LiDAR (Light Detection and Ranging) data is widely applied in building reconstruction, with studies reporting success in typical buildings. However, the reconstruction of curved buildings remains an open research problem. To this end, we propose a new framework for curved building reconstruction via assembling and deforming geometric primitives. The input LiDAR point cloud are first converted into contours where individual buildings are identified. After recognizing geometric units (primitives) from building contours, we get initial models by matching basic geometric primitives to these primitives. To polish assembly models, we employ a warping field for model refinements. Specifically, an embedded deformation (ED) graph is constructed via downsampling the initial model. Then, the point-to-model displacements are minimized by adjusting node parameters in the ED graph based on our objective function. The presented framework is validated on several highly curved buildings collected by various LiDAR in different cities. The experimental results, as well as accuracy comparison, demonstrate the advantage and effectiveness of our method. {The new insight attributes to an efficient reconstruction manner.} Moreover, we prove that the primitive-based framework significantly reduces the data storage to 10-20 percent of classical mesh models.
description: 12 pages. 14 figures
Dynamical collapse of cylindrical symmetric Dipolar Bose-Einstein condensates
Creators: name: Bellazzini, Jacopo
name: Forcella, Luigi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We study the formation of singularities for cylindrical symmetric solutions to the Gross-Pitaevskii equation describing a dipolar Bose-Einstein condensate. We prove that solutions arising from initial data with energy below the energy of the Ground State and that do not scatter collapse in finite time. The main tools to prove our result are the variational characterization of the Ground State energy, suitable localized virial identities for cylindrical symmetric functions, and general integral and pointwise estimates for operators involving powers of the Riesz transforms.
description: 34 pages, final version. Calculus of Variations and Partial Differential Equations, to appear
title: Women in crofting in Shetland from the 1930s to the present day: a reciprocal relationship
Creators: name: Jack, Claire Anne Hamilton
Publisher: name: The Open University
Year: 2004

description: In this thesis, I explore the role of women in Shetland in crofting from the 1930s to the present day. I analyse the changing nature of women's participation in crofting in Shetland during this period, and the changing impact that crofting has had in structuring the identity of Shetland women. Explored against a backdrop of profound communication and technological developments, it is evident that whilst crofting continues to exert a significant influence on women's lives at the start of the new millennium, the meanings that women attach to 'crofting have shifted since the 1930s. At a conceptual level, it is evident that crofting is actively involved in the structuring of social relations. It is characterised by a high degree of fluidity, which allows women to define it in a variety of ways in relation to other aspects of their lives. However, the connotations associated with crofting are not limitless, and 'being a crofter' requires a appropriation of a particular set of values associated with 'tradition', 'family' and a 'crofting way of life'. I explore in detail the nature of Shetland women's croft work, and the ways in which they contextualize crofting in relation to other aspects of their lives. The ways in which gender relations are structured in relation to crofting constitutes a major theme. This analysis challenges several popular 'myths' about Shetland women and crofting, such as the fact that Shetland society 'of the past' is perceived to be more 'egalitarian' than mainland Scottish society. I also explore the role of 'myths' in influencing the ways in which individual women think, and talk, about their lives in crofting and show that, in many cases, popularised 'communal stories' of crofting are accorded a higher value by women in comparison to their own personal experiences of crofting which may fail to live up to the 'ideal'. Crofting in Shetland is explored in the context of shifting policy developments since the 1930s, with a particular emphasis on recent policy directives. This thesis has an applied value as it provides an exploration of the ways in which younger women in Shetland respond to recent, and proposed future, policies. With specific reference to recent developments in crofting, including a focus on more inclusive rural development policies and a focus on diversificiation and environmentally friendly agriculture, I suggest that women in Shetland will potentially identify themselves more clearly as 'crofters', as the definition of 'crofter' changes, than they have done for much of the twentieth century.
North American Women and Their Children: Valuable Resources in Food Production
Creators: name: Light, Harriet K.
name: Hertsgaard, Doris
name: Light, Harriet K.
name: Hertsgaard, Doris
Publisher: name: Unknown
Year: 1984
Subjects: Farm Management
Labor and Human Capital

description: The production of the world's food supply is a complex process involving technical skills and human resources. While often thought of as a male's occupation, agriculture has profited from the work contributions of women. This paper reports the results of a study designed to determine the current work role of women and their children in agricultural production in North Dakota, U.S.A. Results indicate that women and children make significant contributions through various types of farm work. Furthermore, women are increasingly seeking employment off the farm in order to earn the income that will allow the family to continue farming during difficult financial times. As agricultural technologies become more complex, additional skills will be required to manage finances, utilize computers, analyze market infotmaton, and program farm operations. These skills do not require physical strength, but do require time and energy. Women can make significant contributions to agriculture by performance of these skills, The integration of technological skills performed by women with physical farm work performed by men will contribute greatly to the increased effectiveness of agricultural production and management.