cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Korneli Kekelidse beim Konzil der georgischen Kirche 1917 und die Zuordnung zweier kanonischer Dokumente
Creators: name: Papuašvili, Nugzar
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 92 (2008): Oriens christianus, Band 92
Growth, nutrition and genetic factors that affect pigmentation of wood-sapstain fungi
Creators: name: Fleet, Carlos Antonio
Publisher: name: University of British Columbia
Year: 2009

description: In this thesis, we examine several factors, including growth, nutrition and genetic identity, which affect pigmentation of sapstain fungi that discolour softwood in Canada from both chemical and molecular approaches. The presented results suggest that there are some chemical and physical factors to living host tissue that may stimulate growth and pigmentation by Ceratocystis resinifera. It was observed that reduced fungal growth on wood with closed border pits was concatenate with reduced consumption of wood nutrients. Nutrients in wood (such as mannose or TG-bound glycerol and fatty acids) play an important role in pigmentation and growth, but it appears that other factors, such as changes to wood ultrastructure or other biochemical factors, are also critical. Thus, some explanation for the differences in fungal distribution between logs and lumber may lie in the access that fungal species have to the host nutrients. Additionally, the presence of the DHN melanin biosynthesis pathway was demonstrated in all tested sapstain fungi using both chemical inhibitors (including tricyclazole, carpropamid and cerulenin) and molecular techniques. Furthermore, since no fungus has ever been found, to our knowledge, to have more than one melanin synthesis pathway, we can speculate with some confidence that the tested species only use the DHN pathway for melanin production. In addition, partial DNA sequences for the genes encoding scytalone dehydratase (SD), 1,3,8-trihyhydroxynaphthalene reductase (3HNR), 1,3,6,8-tetrahydroxynaphthalene reductase (4HNR) and polyketide synthase (PKS) were obtained from species of Ceratocystis and Ophiostoma and found to have homology with known respective DHN biosynthesis gene sequences. Sequence analysis of the partial SD amino acid sequences showed greater than 80% similarity among the sapstain species, and corresponded well with known parsimony analyses of sapstain fungi based on rDNA sequences. Sequence analysis for the genes encoding 3HNR and PKS showed that these sequences had lower interspecies similarities than the gene encoding SD. It is anticipated that this information will contribute to the development of safe and effective means to control sapstain by both researchers and the forest products industry.
Statistical Cost Analysis of the Existing North Dakota Country Elevator Industry
Creators: name: Chase, Craig A.
name: Helgeson, Delmer L.
name: Shaffer, Terry L.
name: Chase, Craig A.
name: Helgeson, Delmer L.
name: Shaffer, Terry L.
Publisher: name: Unknown
Year: 1983
Subjects: Agribusiness

description: The grain elevator industry is an essential and integrated part of the marketing system in North Dakota. A more efficient marketing system can benefit society either in the form of increasing producer income through higher grain prices, reducing consumer expenditures through lower retail prices, or both. The grain marketing system also is currently moving through a period of change brought on by a larger supply of grain, proposed branch line abandonment and deregulated rail rates. The purpose of this study was to analyze the cost characteristics of the elevator industry and determine the relative efficiency and existence of economies of size during the 1978-79 period. A statistical costing method was used to empirically analyze the cost structure of the country elevator system as it existed during that period. Few elevators were found to be operating near the minimum average cost. Decreasing average total costs were apparent within the elevator industry indicating the existence of economies of size. Upper Great Plains Transportation Institute Report No.43
Effective quantum dimer model for trimerized kagome antiferromagnet
Creators: name: Zhitomirsky, M. E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: An effective spin-orbit Hamiltonian is derived for a spin-1/2 trimerized kagome antiferromagnet in the second-order of perturbation theory in the ratio of two coupling constants. Low-energy singlet states of the obtained model are mapped to a quantum dimer model on a triangular lattice. The quantum dimer model is dominated by dimer resonances on a few shortest loops of the triangular lattice. Characteristic energy scale for the dimer model constitutes only a small fraction of the weaker exchange coupling constant.
description: 7 pages, 3 figures
Distributing the chiral and flavour components of Dirac-Kahler fermions across multiple lattices
Creators: name: Watterson, Steven
name: Sexton, J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We use a specific implementation of discrete differential geometry to describe Dirac-Kahler fermions in such a way that we can separate their chiral and flavour components. The formulation introduces additional lattices so that on each lattice there is a single field of definate chirality. Within this framework, we define an non-compact Abelian gauge theory.
description: Proceedings of talk given at Lattice 2005
AN ECONOMIC ASSESSMENT OF WETLAND MITIGATION IN NORTHWEST MINNESOTA
Creators: name: Sip, Robert L.
name: Leitch, Jay A.
name: Meyer, Aaron J.
name: Sip, Robert L.
name: Leitch, Jay A.
name: Meyer, Aaron J.
Publisher: name: Unknown
Year: 1998
Subjects: subject: Land Economics/Use
subject: Wetland(s)
subject: mitigation
subject: economics
subject: values
subject: Minnesota
subject: Red River
subject: Wetland Conservation Act
subject: Minnesota Routine Assessment Method
subject: restoration

description: The economic efficiency of wetland mitigation in Minnesota's Red River Valley was examined using the Minnesota Routine Assessment Method on ten wetland case studies to rate the functions of impacted and replacement wetlands. Secondary sources were used to assign dollar values to wetland functions of impacted and replacement wetlands. Mitigation costs for projects ranged from $279 to $4,171 per acre. Estimated annual social values ranged from $207 to $1,027 per acre for impacted wetlands and from $268 to $927 per acre for replacement wetlands. Social values of replacement wetlands exceeded the social value of impacted wetlands in seven cases. Values of replacement wetlands were 1.8 to 4 times greater than the values of impacted wetlands due to 2-to-1 replacement ratios. When society gains benefits from mitigation, public cost-sharing may be appropriate. In one case the value of the impacted wetlands was higher than the value of the replacement wetland. There were insufficient data to evaluate two cases. Results are only indicators of efficiency, since not all social costs and benefits of the impact-mitigation activity are addressed by legislation. These results suggest wetland mitigation policy in Minnesota needs to be reevaluated if efficient use of society's resources is a legislative goal.
The Initial Value Problem, Scattering and Inverse Scattering, for Non-Linear Schrödinger Equations with a Potential and a Non-Local Non-Linearity
Creators: name: Romero, María de los Ángeles Sandoval
name: Weder, Ricardo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 35Q55, 35P25, 35R30, 81U40

description: We consider non-linear Schrödinger equations with a potential, and non-local non-linearities, that are models in mesoscopic physics, for example of a quantum capacitor, and that also are models of molecular structure. We study in detail the initial value problem for these equations. In particular, existence and uniqueness of local and global solutions, continuous dependence on the initial data and regularity. We allow for a large class of unbounded potentials. We have no restriction on the growth at infinity of the positive part of the potential. We also construct the scattering operator in the case of potentials that go to zero at infinity. Furthermore, we give a method for the unique reconstruction of the potential from the small amplitude limit of the scattering operator. In the case of the quantum capacitor, our method allows us to uniquely reconstruct all the physical parameters from the small amplitude limit of the scattering operator.
CHARACTERISTICS OF NATURE-BASED TOURISM ENTERPRISES IN NORTH DAKOTA
Creators: name: Hodur, Nancy M.
name: Bangsund, Dean A.
name: Leistritz, F. Larry
name: Hodur, Nancy M.
name: Bangsund, Dean A.
name: Leistritz, F. Larry
Publisher: name: Unknown
Year: 2004
Subjects: subject: Resource /Energy Economics and Policy
subject: nature-based tourism
subject: outdoor recreation
subject: enterprise characteristics
subject: rural businesses
subject: economic development

description: Recreational activities related to North Dakota's wealth of natural resources are well-established in North Dakota. In recent years, North Dakota's abundant resources have attracted visitors from around the country and the world. In addition to providing recreational activities for residents and visitors alike, natural resource-based tourism is a basic sector that may have considerable potential for creating economic opportunities in rural areas. Recognition of the potential importance of resource-based tourism to rural economies is well-advanced in other parts of the United States. However, little attention has historically been paid to tourism in North Dakota. While much anecdotal evidence exists suggesting that natural resource-based tourism is growing in North Dakota, no basic research on the sector has to date been completed. The goal of this study is to identify and analyze existing agricultural and natural resource-based tourism enterprises in North Dakota.
Anisotropic, non-monotonic behavior of the superconducting critical current in thin YBa2Cu3O7-d films on vicinal SrTiO3 surfaces
Creators: name: Cantoni, C.
name: Verebelyi, D. T.
name: Specht, E. D.
name: Budai, J.
name: Christen, D. K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The critical current density of epitaxial YBCO films grown on vicinal SrTiO3 substrates was investigated by electrical transport measurements along and across the steps of the SrTiO3 surface for a range of temperatures of 10 K to 85 K and in applied magnetic fields varying from 0 to 14 T. For vicinal angles of 4 and 8 degrees, we found evidence of enhanced pinning in the longitudinal direction at low magnetic fields for a wide region of temperatures and attribute this phenomenon to anti-phase boundaries in the YBCO film. The transverse Jc data showed a peak in the Jc(H) curve at low magnetic fields, which was explained on the basis of magnetic interaction between Abrikosov and Abrikosov-Josephson vortices. The in-plane Jc anisotropy observed for vicinal angles of 0.4 degrees was reversed with respect to the 8 degree and 4 degree samples. This phenomenon was interpreted on the basis of strain induced in the YBCO film by the stepped substrate's surface.
description: accepted for publication in Phys. Rev. B
2004 OUTLOOK OF THE U.S. AND WORLD SUGAR MARKETS, 2003-2013
Creators: name: Koo, Won W.
name: Taylor, Richard D.
name: Koo, Won W.
name: Taylor, Richard D.
Publisher: name: Unknown
Year: 2004
Subjects: subject: Crop Production/Industries
subject: sugar
subject: production
subject: exports
subject: consumption
subject: ending stocks

description: This report evaluates the U.S. and world sugar markets for 2003-2013 using the Global Sugar Policy Simulation Model. This analysis is based on assumptions about general economic conditions, agricultural policies, population growth, weather conditions, and technological changes. Both the U.S. and world sugar economies are predicted to improve over the next 10 years after the current over-supply is reduced. World demand for sugar is expected to grow faster than world supply, resulting in Caribbean sugar prices gradually increasing from 7.57 cents/lb in 2003 to 8.75 cents/lb in 2013. The U.S. wholesale price of sugar is projected to increase from 25.35 cents/lb in 2003 to 27.0 cents/lb in 2013, if the United States maintains its sugar programs. The CAFTA agreement is expected to increase U.S. imports slightly, but with little impact on U.S. prices. World trade volumes of sugar are expected to increase throughout the forecast period.
High Precision Fundamental Constants using Lattice Perturbation Theory
Creators: name: Mason, Quentin
name: Trottier, Howard
name: Horgan, Ron
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The HPQCD collaboration has a program for determining the fundamental constants of the Standard Model Lagrangian from lattice QCD. The most accurate method of doing this uses the n_f=2+1 improved staggered MILC ensembles with chiral fitting and multi-loop perturbative renormalisation to connect to the continuum \msbar scheme. This program has already been very successful with the recent strong coupling constant determination at three-loops from 28 observables at three lattice spacings, and the one-loop light quark mass calculation last year. Here a preliminary result is presented for the first-ever lattice determination of the two-loop multiplicative quark mass renormalisation. The perturbative calculation involved was automated in the generation of the Feynman rules, and the generation and coding of all of the roughly 30 Feynman diagrams. The full formal framework for lattice quark mass renormalisation is given, including the cancellation of infrared divergences in intermediate diagrams. The result was checked by evaluation in three separate gauges and by two authors independently, showing the incredible flexibility and power of this perturbative methodology. Our preliminary result for the two-loop perturbative matching factor, and of systematic errors associated with higher-orders, gives \msbar masses at a 2 GeV scale of $m_s = 87(0)(4)(4)(0)$ MeV, and $\frac12(m_u+m_d) = 3.3(0)(2)(2)(0)$ MeV, where the respective uncertainties are from lattice statistical, lattice systematic, perturbative, and electromagnetic and isospin effects. The perturbative errors are a factor of two smaller than in our previous study, and we anticipate reducing this somewhat further from additional analysis of the systematics.
description: Proceedings of Science format, 15 pages. Uses updated feynmp.mp and feynmp.sty for Feynman diagrams. Plenary presented at lattice 2005. PoS(latt2005)011
Alpacas and Ecosystems Management
Creators: name: Charry, Al A.
name: Kemp, David R.
name: Lawrie, J.W.
name: Charry, Al A.
name: Kemp, David R.
name: Lawrie, J.W.
Publisher: name: Unknown
Year: 2003
Subjects: subject: Environmental Economics and Policy
subject: Livestock Production/Industries
subject: Sustainable farm management
subject: farming systems research
subject: alpacas

description: Alpacas are a species that present physiological, anatomical, morphological and behavioural distinctive characteristics compared to other species used in animal production. Empirical observation of a herd, grazing under time management controlled conditions, allowed to approximate some initial observations about the effect of alpacas in the management of ecosystems. Larger green matter availability in the paddocks grazed by alpacas, evident natural weed control, better plants distribution and increasing stocking capacity were the relevant observed issues. It is considered that the special behavioural characteristics of alpacas in terms of excretion habits, low hoof pressure, food conversion efficiency and grazing habits should be factors to be rigourously studied to explore the value of alpacas as an environmentally friendly species.
Semi Conditional Variational Auto-Encoder for Flow Reconstruction and Uncertainty Quantification from Limited Observations
Creators: name: Gundersen, Kristian
name: Oleynik, Anna
name: Blaser, Nello
name: Alendal, Guttorm
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We present a new data-driven model to reconstruct nonlinear flow from spatially sparse observations. The model is a version of a conditional variational auto-encoder (CVAE), which allows for probabilistic reconstruction and thus uncertainty quantification of the prediction. We show that in our model, conditioning on the measurements from the complete flow data leads to a CVAE where only the decoder depends on the measurements. For this reason we call the model as Semi-Conditional Variational Autoencoder (SCVAE). The method, reconstructions and associated uncertainty estimates are illustrated on the velocity data from simulations of 2D flow around a cylinder and bottom currents from the Bergen Ocean Model. The reconstruction errors are compared to those of the Gappy Proper Orthogonal Decomposition (GPOD) method.
title: Synthese zwischen Bibliothek und Fachbereich – Der Darmstädter Weg zur Bibliothek als Lernort neuer Qualität
Creators: name: Bergmann, Holger
name: Streib, Simon
name: Holländer, Stephan
name: Sühl-Strohmenger, Willy
name: Syré, Ludger
Publisher: name: b.i.t.verlag gmbh
Year: 2021

description: Die einzelnen Beiträge im Buch, so unterschiedlich sie letztlich von den Verfasserinnen und Verfassern geschrieben wurden, stellen die jeweiligen Lernzentrumsgestaltungen nicht ausschließlich unter bibliothekarischem Blickwinkel dar; sie betten sie darüber hinaus teilweise in innenarchitektonische und lerntheoretische, teilweise auch in raum- und gruppensoziologische Überlegungen ein.
Bush fallowing and forest resources conservation in Akamkpa LGA of Cross River State, Nigeria.pdf
Creators: name: Oyamo, Vincent  Ita
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 399999
subject: Other education not elsewhere classified

description: This paper examined the relationship between bush fallowing and forest resources conservation in Akampka Local Government area of Cross River State, Nigeria. One hypothesis was formulated to guide the study. Ex-post facto research design was considered most suitable for the study. Purposive and stratified random sampling techniques were adopted in selecting the 487 respondents sampled for the study…
Permeability of fractures in shale rocks – Influence of pressure, temperature, stress and fluid chemistry
Creators: name: Herrmann, J.
name: Rybacki, E.
name: Wang, W.
name: Milsch, H. H.
Publisher: name: Zenodo
Year: 2020
Subjects: Groundwater hydrology
Groundwater transport
Rocks: physical properties
Numerical approximations and analysis

description: We conducted fracture permeability experiments on shales at elevated confining pressures, pc, temperatures, T, and differential stresses, 𝜎, representing in situ conditions (z≈2-3km). Examined rocks were Wissenbach shale, which is of Variscan age, recovered from the `Hahnenklee' drill site (Harz mountains, Germany). Petrophysical (He-pycnometry, Energy dispersive X-ray diffraction) as well as microstructural observations (scanning electron microscopy) reveal a fine grained, anisotropic shale matrix (grain size d ≤ 50 µm) with porosity values of 𝜙He = 1-2%. Main shale components were identified as mechanically weak phyllosilicates, intermediate strong carbonates and strong quartz minerals. Constant strain rate deformation experiments performed at pc = 50 MPa and T = 100 °C prior to fracture conductivity tests reveal predominantly brittle deformation behavior. Peak strength was substantially higher for samples loaded perpendicular to the visible bedding orientation compared to bedding-parallel loading. Fracture permeability tests were done on samples prepared with a saw-cut of given roughness, allowing to measure the evolution of fracture permeability with time under pre-defined pc-T-𝜎 conditions using water and reservoir representative fluids. With increasing pc and 𝜎, fracture permeability, k, decreases, approaching a minimum value at high pc (> 20 MPa) and 𝜎 (> 45 MPa), possibly induced by a change from fluid flow through the entire fracture towards flow through localized channels. Comparing the initial and final roughness of the fracture surfaces after experiments reveals that the amount of asperities is reduced. Above T = 40°C, the influence of increasing temperature on permeability is relatively low as k remains nearly constant up to 100 °C, after an initial reduction if temperature was increased from 20 to 40 °C. However, we found a higher concentration of Na+ rather than Si4+ at enhanced temperatures of T = 70°C and T=90°C, respectively. In addition, Na- and Si-bearing minerals exhibited a higher dissolution rate at T=90°C, if compared to T=70°C. Our results suggest that the investigated shales may be considered as a potential host rock for (unconventional) Enhanced Geothermal Systems (EGS) as the influence of mechanical in situ boundary conditions as well as (fluid) chemistry is relatively low.
Total Galaxy Magnitudes and Effective Radii from Petrosian Magnitudes and Radii
Creators: name: Graham, Alister W.
name: Driver, Simon P.
name: Petrosian, Vahe'
name: Conselice, Christopher J.
name: Bershady, Matthew A.
name: Crawford, Steven M.
name: Goto, Tomotsugu
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Petrosian magnitudes were designed to help with the difficult task of determining a galaxy's total light. Although these magnitudes (taken here as the flux within 2R_P, with the inverted Petrosian index 1/eta(R_P)=0.2) can represent most of an object's flux, they do of course miss the light outside of the Petrosian aperture (2R_P). The size of this flux deficit varies monotonically with the shape of a galaxy's light-profile, i.e., its concentration. In the case of a de Vaucouleurs R^{1/4} profile, the deficit is 0.20 mag; for an R^{1/8} profile this figure rises to 0.50 mag. Here we provide a simple method for recovering total (Sersic) magnitudes from Petrosian magnitudes using only the galaxy concentration (R_90/R_50 or R_80/R_20) within the Petrosian aperture. The corrections hold to the extent that Sersic's model provides a good description of a galaxy's luminosity profile. We show how the concentration can also be used to convert Petrosian radii into effective half-light radii, enabling a robust measure of the mean effective surface brightness. Our technique is applied to the SDSS DR2 Petrosian parameters, yielding good agreement with the total magnitudes, effective radii, and mean effective surface brightnesses obtained from the NYU--VAGC Sersic R^{1/n} fits by Blanton et al. (2005). Although the corrective procedure described here is specifically applicable to the SDSS DR2 and DR3, it is generally applicable to all imaging data where any Petrosian index and concentration can be constructed.
description: AJ, in press after minor additions to the text (7 pages of text, plus 6 of figures and tables)
Responses of Egyptian Food Crops Producers to New Economic Policies: Cases of Wheat and Rice
Creators: name: Abdou, Amin I.
name: Abdou, Amin I.
Publisher: name: Unknown
Year: 2003
Subjects: Crop Production/Industries

description: The formerly neglected wheat production is recovering under policies of economic reform and liberalization. The most effective factors are the continuous price raises and the relatively low production costs which should continue, along with attempts to improve yields and reduce costs, if to avoid imports re-expansion. As for rice, its production expansion potentials are constrained by water limitations. However, the ongoing price increases may motivate attempts to reduce both production costs and post-harvest enormous losses. Exports may be promoted as such, hardly threatening satisfaction of domestic needs, at least in the foreseen future.
Magnetic ground state of CeNi$_{1-x}$Cu$_{x}$: A calorimetric investigation
Creators: name: Marcano, N.
name: Espeso, J. I.
name: Sal, J. C. Gomez
name: Fernandez, J. Rodriguez
name: Herrero-Albillos, J.
name: Bartolome, F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a detailed specific heat study of the CeNi$_{1-x}$Cu$_{x}$series in a large temperature range of 0.2 K to 300 K. The analysis of these data, considering also previous neutron scattering, magnetic characterization and $μ$SR results, allows us to present a convenient description of the system as inhomogeneous on the nanometric scale. Two regimes are detected in the compositional range depending on the dominant RKKY or Kondo interactions. We propose that the long-range magnetic order at low temperatures is achieved by a percolative process of magnetic clusters that become static below the freezing temperature $T_{f}$. In this scenario the existence of a Quantum Critical Point at the magnetic-nonmagnetic crossover must be discarded.
description: 13 pages, 12 figures, submitted to Phys. Rev. B
Das griechische Tropologion-Fragment aus dem Kastellion-Kloster und seine georgischen Parallelen
Creators: name: Chronz, Tinatin
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 92 (2008): Oriens christianus, Band 92
Spin Light of Neutrino in Dense Matter
Creators: name: Grigoriev, Alexander
name: Studenikin, Alexander
name: Ternov, Alexei
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We develop the quantum theory of the spin light of neutrino ($SLν$) exactly accounting for the effect of background matter. Contrary to the already performed studies of the $SLν$, in this paper we derive explicit and closed expressions for the $SLν$ rate and power and for the emitted photon energy, which are valid for an arbitrary matter density (including very high values). The spatial distribution of the radiation power and the dependence of the emitted photon energy on the direction of radiation are also studied in detail for the first time. We analyze the $SLν$ polarization properties and show that within a wide range of neutrino momenta and matter densities the $SLν$ radiation is circularly polarized. Conditions for effective $SLν$ photon propagation in the electron plasma are discussed. It is also shown that in dense matter the average energy of the emitted photon can reach values in the range from one third of the neutrino momentum up to one half of the neutrino energy in matter. The main features of the studied radiation are summarized, and possibilities for the $SLν$ production during different astrophysical and cosmology processes are discussed.
description: 15 pages, 7 figures, in: Proceedings of Les Recontres de Physique de la Vallee d'Aoste ("Results and Perspectives in Particle Physics", March 2005, La Thuile, Italy), ed. by Mario Greco, Frascati Physics Series, Italy, 2005; modified version is accepted for publication in Phys.Lett.B
Proposed Miami Impact Crater Identified as a Solutional Doline of Oolictic Limestone
Creators: name: Paris, Antonio
name: Robinson, Ryan
name: Schwartz, Skye
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: This investigation addresses the discovery of a proposed impact crater located off the coast of Miami, FL under the North Atlantic Ocean. A preliminary analysis of bathymetry data obtained from the National Oceanic and Atmospheric Administration implied a morphology consistent with a complex crater produced by a hypervelocity impact event of extraterrestrial origin. The proposed impact features include a central peak, concentric rings, and an ejecta field to the northwest. Analysis of geological data from the US Geological Survey places the strata overlying the proposed impact site as Miami Limestone, Pleistocene, accumulated during Marine Isotope Stage 5e, thereby placing the maximum age of the proposed impact crater at 80 ka to 130 ka. Three other competing hypotheses for the formation of the structure, namely a controlled maritime explosion, radial lava flow from volcano, or a depressed bioherm, doline, or karst (solutional depression) were explored throughout the investigation. To confirm the proposed structure as an impact crater, an in-situ underwater expedition was organized by Planetary Sciences, Inc. specifically to ascertain whether planar formations, shatter cones, and shock metamorphic and or other meteoritic properties were present. After analyzing the geological samples collected at the proposed impact crater, examining the morphology of analogous geologic structures, and evaluating competing hypotheses, we conclude that the structure is a solutional doline formed by the uneven dissolution of the Miami Limestone, and, accordingly, do not recommend that the structure be indexed in the Earth Impact Database
description: 10 Pages, 11 Figures
Is the Farm Prospering and Why? A Method to Spot Good or Weak Performance and To Do "Benchmarking"
Creators: name: Nelson, Bert-Owe
name: Nelson, Bert-Owe
Publisher: name: Unknown
Year: 2003
Subjects: Farm Management

description: In Swedish agriculture "mixed farming" is common. The manager may choose among several crops, with or without livestock production, or to produce services to other farmers or to customers outside the farm sector. Farmers with diversified production feel the need to know which enterprises that do really contribute to farm profitability on the whole even if gross margins appears to be rather good. With our method we evaluate the economic result of the most recent year in cooperation with the farmer. We analyse the profit and loss account based on farm records on quantities and monetary information. Revenues and costs are allocated to the enterprises where they belong. The systematic approach includes even farm enterprises that produce "internal products" i.e. feed production, straw production etc. This procedure is implemented, not only for the easily found variable costs, but also for labour, machinery and energy costs as well as for for buildings and some other capacity costs. We use definitions of gross margin 1, gross margin 2, etc in steps down towards finally computing the rate of the return on investments. The system produces results both on the farm business- and enterprise level on many key numbers regarding economic and technical efficiency. In the end we undertake "benchmarking actvities" individually (with the farm-staff) and with groups of farmers through organized workshops. This method has been in use since 1949 with 120 customers currently utilising the system.
Non--quasi--projective moduli spaces
Creators: name: Kollár, János
Publisher: name: arXiv
Year: 2005
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14D22, 14L30 (primary) 14M25 (secondary)

description: We show that every smooth toric variety (and many other algebraic spaces as well) can be realized as a moduli space for smooth, projective, polarized varieties. Some of these are not quasi--projective. This contradicts a recent paper (Quasi--projectivity of moduli spaces of polarized varieties, Ann. of Math. 159 (2004) 597--639.).
description: 20 pages, published version
Changing Farming Systems - Case Studies Assessing the Financial Implications
Creators: name: Bennett, Anne L.
name: Bennett, Anne L.
Publisher: name: Unknown
Year: 2003
Subjects: Farm Management

description: The ability to adapt to changing circumstance is a determinant of future farm prosperity. Managers need to assess the performance of their current farming system and alternative farming options to identify possible profitable management changes. This paper uses the STEP (Simulated Transitional Economic Planning) model to provide case study analyses of the financial implications of changing a farming system. STEP simulates the process of transition allowing the user to assess the financial costs and benefits of transition. The case studies examined in this paper use financial data from farms at Wickepin, and Meckering in Western Australia. The case studies demonstrate how the rate of transition into a new farming system can affect the distribution of profit, and how environmental benefits can alter the profitability of a transition strategy.
Additional file 1 of Status of parasitological indicators and morbidity burden of onchocerciasis after years of successive implementation of mass distribution of ivermectin in selected communities of Yeki and Asosa districts, Ethiopia
Creators: name: Gebrezgabiher, Gebremedhin
name: Zeleke Mekonnen
name: Delenasaw Yewhalaw
name: Asrat Hailu
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Ecology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1. Interview Guide. This face-to-face interview guide was used to obtain the personal information (socio-demographic profile) of the study participants.
title: Climate Change and Sustainable Development: Selected Elements of a Sustainable Development Model Law
Creators: name: Houston, Larissa Jane
Publisher: name: Universität Graz
Year: 2021

description: 2020 was the beginning of the critical decade for Climate Change. Under the United Nations Framework Convention on Climate Change, the Paris Agreement was an opportunity for countries to commit to temperature rises of no more than 2 degrees Celsius while aiming to keep rises in temperatures below 1.5 degrees Celsius. Countries were to revisit their National Determined Contributions in 2020, during the first Global Stocktake, and strengthen emissions reduction targets for 2030. In the first 5 years of the Paris Agreement there has been a rather restricted way of viewing Climate Change mitigation and adaptation procedures and many countries have failed to provide express legislative reform or national plans and agendas to help decrease carbon emissions and curb the impacts of climate change. In order for there to be meaningful change that is all encompassing, there must be wholistic change across all present and future legislative reforms. Climate Change mitigation and adaptation must be considered in all future policy and national agenda considerations. And Covid-19 Recovery has provided an opportunity to do so.
As the globe finds ways to recover from the Covid-19 pandemic there has been greater focus and attempts to include Sustainable Development Goals and Climate Change agendas within pandemic recovery plans. There should be greater effort to incorporate the two into a uniform legislative instrument for change. Sustainable Development as a concept includes environmental development and Climate Action is expressly considered in Sustainable Development Goal 13. In formulating Sustainable Development legislation as a tool to address development agendas and Climate Change strategies, nations would be better equipped to ensure that climate considerations are present in all forms of development.
While considering the United nations Agenda 2030, the Paris Agreement as well as development incentives, a Sustainable Development Act may be the tool to ensure the protection of present and future generations in Climate Change mitigation and adaptation. Sustainable Development legislation that brings together economic, social and environmental concerns would be beneficial in addressing Sustainable Development and Climate Change simultaneously and with better effect.
description: Keywords: Sustainable Development, Climate Change, Model Law, Development, Law
description: ALJ 2021, 285–304
Prayers attributed to Severus of Antioch
Creators: name: Yūsuf, Yūḥannā Nasīm
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 92 (2008): Oriens christianus, Band 92
Trends in care for HIV positive pregnant women in British Columbia, 1994-1999
Creators: name: Ogilvie, Gina Suzanne
Publisher: name: University of British Columbia
Year: 2009

description: Background: With the increasing prevalence of HIV in Canadian women of child bearing age, there is an attendant risk for increased perinatal HIV transmission. Use of combination antiretroviral therapy in the HIV positive pregnancy, coupled with AZT during labour and for the infant can significantly decrease risk of perinatal HIV transmission to less than five percent. There is a need to establish i f Canadian HIV positive pregnant women are receiving this intervention, and i f this has lead to a decrease in perinatal HIV transmission in the Canadian setting. It is also important to establish i f use of these medications in the antepartum period has any negative consequences on the developing fetus. Methods: This study used data gathered both retrospectively and prospectively from the Oak Tree Clinic, the provincial centre providing clinical care for HIV positive pregnant women in British Columbia. Care that HIV positive maternal infant pairs received between January 1994 and December 1999 was evaluated. Chi square tests were conducted to compare event rates between cohorts, and odds ratios with confidence intervals were conducted to provide a measure of the strength of association between two variables. A p value of 0.05 was considered statistically significant, and all reported p values are two sided. Results: One hundred and forty five HIV positive pregnancies were evaluated at Oak Tree Clinic. Ninety-nine HIV positive women gave birth to 116 infants. Sixty five maternal infant pairs received some type of antiretroviral treatment during pregnancy. Twenty four pairs received combination antiretroviral therapy, twelve received dual therapy and twenty nine received AZT monotherapy. Eighteen infants contracted HIV, for an overall transmission rate of 15.5%. There has been a significant increase in the use of combination treatment in pregnancy since 1996 (38.3% vs 75%; OR 6.37; 95% CI 2.4 -17.1) and a reduction in the perinatal transmission rate in the same time period (25% vs 5.4%, OR 5.9; 95% CI 1.6-21.6). In this study, no specific treatment regimen was linked consistently with any adverse effects in the pregnancy or in the infant. Conclusion: In one Canadian province, there has been a significant increase in the use of combination antiretroviral treatment for HIV positive maternal infant pairs. This has lead to a reduction in the perinatal transmission of HIV.
Seismology of triple-mode classical Cepheids of the Large Magellanic Cloud
Creators: name: Moskalik, P.
name: Dziembowski, W. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We interpret the three periods detected in OGLE LMC Cepheids SC3-360128 and SC5-338399 as corresponding to the first three overtones of radial pulsations. This interpretation imposes stringent constraints on parameters of the stars and on their evolutionary status, which could only be the first crossing of the instability strip. Evolutionary models reproducing measured periods exist only in a restricted range of metallicities (Z=0.004-0.007). The models impose an upper limit on the extent of overshooting from the convective core. Absolute magnitude of each star is confined to a narrow interval. This allows to derive a new estimate of the distance to the LMC. We obtain m-M ranging from 18.34mag to 18.53mag, with a systematic difference between the two stars of about 0.13mag. The rates of period change predicted by the models are formally in conflict with the derived observational limits, though the uncertainities of measured dP/dt may be underestimated. If the discrepancy is confirmed, it would constitute a significant challenge to the stellar evolution theory.
description: 9 pages, 2 figures, accepted for publication in A&A
Parameter Study of Star-Discs Encounters
Creators: name: Pfalzner, S.
name: Vogel, P.
name: Scharwaechter, J.
name: Olczak, C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Interactions between disc-surrounded stars might play a vital role in the formation of planetary systems. Here a first parameter study of the effects of encounters on low-mass discs is presented. The dependence of the mass and angular momentum transport on the periastron distance, the relative mass of the encountering stars and eccentricity of the encounter is investigated in detail. This is done for prograde and retrograde coplanar encounters as well as non-coplanar encounters. For distant coplanar encounters our simulation results agree with the analytical approximation of the angular momentum loss by Ostriker(1994). However, for close or high-mass encounters, significant differences to this approximation are found. This is especially so in the case of retrograde encounters, where the analytical result predict no angular momentum loss regardless of the periastron distance whereas the simulations find up to ~ 20% loss for close encounters. For the non-coplanar case a more complex dependency on the inclination between orbital path and disc plane is found than for distant encounters. For the coplanar prograde case new fitting formulae for the mass and angular momentum loss are obtained, which cover the whole range from grazing to distant encounters. In addition, the final disc size and the mass exchange between discs is examined, demonstrating that for equal mass stars in encounters as close as 1.5 the disc radius, the disc size only is reduced by approximately 10%.
description: 11 pages, 9 figures
Generalized stationary random fields with linear regressions - an operator approach
Creators: name: Matysiak, Wojciech
name: Szabłowski, Paweł J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G12, 60G10, 47B35

description: Existence, $L^2$-stationarity and linearity of conditional expectations $\wwo{X_k}{...,X_{k-2},X_{k-1}}$ of square integrable random sequences $\mathbf{X}=(X_{k})_{k\in\mathbb{Z}}$ satisfying \[ \wwo{X_k}{...,X_{k-2},X_{k-1},X_{k+1},X_{k+2},...}=\sum_{j=1}^\infty b_j(X_{k-j}+X_{k+j}) \] for a real sequence $(b_n)_{n\in\nat}$, is examined. The analysis is reliant upon the use of Laurent and Toeplitz operator techniques.
description: The current, final version of the paper has a slightly different title (the previous title was "Non-Markov random fields with linear regressions -- a Toeplitz operators approach")
High-resolution proper motions in a sunspot penumbra
Creators: name: Marquez, I.
name: Almeida, J. Sanchez
name: Bonet, J. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Local correlation tracking techniques are used to measure proper motions in a series of high angular resolution (~0.1 arcsec) penumbra images. If these motions trace true plasma motions, then we have detected converging flows that arrange the plasma in long narrow filaments co-spatial with dark penumbral filaments. Assuming that these flows are stationary, the vertical stratification of the atmosphere and the conservation of mass suggest downflows in the filaments of the order of 200 m/s. The association between downflows and dark features may be a sign of convection, as it happens with the non-magnetic granulation. Insufficient spatial resolution may explain why the estimated vertical velocities are not fast enough to supply the radiative losses of penumbrae.
description: To appear in ApJ. 11 pages with 9 figures. Movie at http://www.iac.es/proyect/solarhr/pencork.html
Dynamic Vehicle Routing Problem: A Monte Carlo approach
Creators: name: Okulewicz, Michał
name: Mańdziuk, Jacek
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: In this work we solve the Dynamic Vehicle Routing Problem (DVRP). DVRP is a modification of the Vehicle Routing Problem, in which the clients' requests (cities) number and location might not be known at the beginning of the working day Additionally, all requests must be served during one working day by a fleet of vehicles with limited capacity. In this work we propose a Monte Carlo method (MCTree), which directly approaches the dynamic nature of arriving requests in the DVRP. The method is also hybridized (MCTree+PSO) with our previous Two-Phase Multi-swarm Particle Swarm Optimization (2MPSO) algorithm. Our method is based on two assumptions. First, that we know a bounding rectangle of the area in which the requests might appear. Second, that the initial requests' sizes and frequency of appearance are representative for the yet unknown clients' requests. In order to solve the DVRP we divide the working day into several time slices in which we solve a static problem. In our Monte Carlo approach we randomly generate the unknown clients' requests with uniform spatial distribution over the bounding rectangle and requests' sizes uniformly sampled from the already known requests' sizes. The solution proposal is constructed with the application of a clustering algorithm and a route construction algorithm. The MCTree method is tested on a well established set of benchmarks proposed by Kilby et al. and is compared with the results achieved by applying our previous 2MPSO algorithm and other literature results. The proposed MCTree approach achieves a better time to quality trade-off then plain heuristic algorithms. Moreover, a hybrid MCTree+PSO approach achieves better time to quality trade-off then 2MPSO for small optimization time limits, making the hybrid a good candidate for handling real world scale goods delivery problems.