cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Predictive performance of the World Bank's commodity price projections
Creators: name: Warr, Peter G.
name: Warr, Peter G.
Publisher: name: Unknown
Year: 1990
Subjects: Agribusiness
Demand and Price Analysis

description: The World Bank's commodity price projections are widely used for various planning purposes. Two aspects of the Bank's projections of relative prices are studied in this paper. The first is whether the forecasts make efficient use of the information available at the time the forecast is made. The second JS whether the forecasts predict future prices with greater accuracy than alternative forecasting methods. These matters are studied by comparing the World Bank's past price projections with the actual prices that were subsequently observed. The results show that, overall, the World Bank forecasts do not pass either test. First, the World Bank forecasts are informationally inefficient. Prediction error (projection minus actual price) tends to be positively correlated with the projections themselves. Although the direction of future price movements tends to be correctly predicted, the magnitude of these movements tends to be overpredicted. Second, the World Bank forecasts do not perform well even compared with the simplest of alternative forecasting methods - the prediction of no change.
The integration of water quality into transboundary allocation agreements Lessons from the southwestern United States
Creators: name: Bennett, Lynne Lewis
name: Bennett, Lynne Lewis
Publisher: name: Unknown
Year: 2000
Subjects: subject: Production Economics
subject: Research and Development/Tech Change/Emerging Technologies
subject: Water allocation
subject: Water quality
subject: Interstate compacts

description: There is now a fairly substantial literature that addresses transboundary water allocation both at the international and interstate level. However, most of this literature deals almost exclusively with the question of allocation and ignores quality considerations. At the same time, there is a growing literature on trans boundary pollution control and upstream/downstream externalities. What is missing is an attempt to integrate quality consideration into allocation agreements. This paper examines several allocation agreements and disputes in the southwestern United States and Mexico and looks at the ramifications of omitting pollution control and quality considerations in these negotiations.© 2000 Elsevier Science B.V. All rights reserved.
Near-group categories
Creators: name: Siehler, Jacob
Publisher: name: arXiv
Year: 2002
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 18D10

description: We consider the possibility of semisimple tensor categories whose fusion rule includes exactly one noninvertible simple object. Conditions are given for the existence or nonexistence of coherent associative structures for such fusion rules, and an explicit construction of matrix solutions to the pentagon equations in the cases where we establish existence. Many of these also support (braided) commutative and tortile structures and we indicate when this is possible. Small examples are presented in detail.
description: Published by Algebraic and Geometric Topology at http://www.maths.warwick.ac.uk/agt/AGTVol3/agt-3-25.abs.html
THE STATUS OF POLYFUNCTIONAL WORDS IN THE LANGUAGE SYSTEM
Creators: name: Xonboboeva, Shoira
Publisher: name: Zenodo
Year: 2025

description: Different approaches to the description of linguistic units, in particular, service words are being examined. The author substantiates the status of polyfunctional function words as a special class, identifies the criteria for including units in this class. The status of polyfunctional words as a special class is substantiated. The principles of description system of polyfunctionality, service words on on the basis of polyfunctionality/ polysemantics/monosemantics. It has been established that the proposed approach allows describing other units of the language system (service and full denominative), which meets the need for an integrative description of the language system.
Upgraded Giant Metrewave Radio Telescope timing of NGC 1851A: a possible millisecond pulsar-neutron star system
Creators: name: Ridolfi, Alessandro
name: Freire, Paulo C. C.
name: Gupta, Yashwant
name: Ransom, Scott M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: (abridged) In this work we present the results of one year of upgraded Giant Metrewave Radio Telescope timing measurements of PSR~J0514$-$4002A, a 4.99-ms pulsar in a 18.8-day, eccentric ($e \, =\, 0.89$) orbit with a massive companion located in the globular cluster NGC~1851. Combining these data with earlier Green Bank Telescope data, we greatly improve the precision of the rate of advance of periastron, $\dotω \, = \, 0.0129592(16)\, °\, \rm yr^{-1}$ which, assuming the validity of general relativity, results in a much refined measurement of the total mass of the binary, $M_{\rm tot} \, = \, 2.4730(6) \, M_{\odot}$. Additionally, we measure the Einstein delay parameter, $γ\,, = \, 0.0216(9) \, \rm s$. Furthermore, we measure the proper motion of the system ($μ_α \, = \, 5.19(22)$ and $μ_δ = -0.56(25)\rm~mas ~ yr^{-1}$), which is not only important for analyzing its motion in the cluster, but is also essential for a proper interpretation of $γ$, given the latter parameter's correlation with the variation of the projected semi-major axis. The measurements of $γ$ and the proper motion enable a separation of the system component masses: we obtain a pulsar mass of $M_{p} \, = \, 1.25^{+0.05}_{-0.06} \, M_{\odot}$ and a companion mass of $M_{c} \, = \, 1.22^{+0.06}_{-0.05} \, M_{\odot}$. This raises the possibility that the companion is also a neutron star. Searches for radio pulsations from the companion have thus far been unsuccessful, hence we cannot confirm the latter hypothesis. The low mass of this millisecond pulsar - one of the lowest ever measured for such objects - clearly indicates that the recycling process can be achieved with a relatively small amount of mass transfer.
description: 16 pages, 6 figures, accepted for publication in MNRAS
Laparocerus abditus Roudier 1963
Creators: name: Machado, Antonio
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Curculionidae
Laparocerus
Laparocerus abditus

description: Laparocerus abditus Roudier, 1963
 Laparocerus (Atlantis) abditus Roudier 1963, p 136, Figure 2 (aedeagus).
 Type locality. Rosario, Island of Madeira.
 Holotype: 1„ [Madeira Rosario/ 2-7-1957 /Lindberg] [Type] [Laparocerus (Atlantis) / abditus Roudier n. sp. /A. Roudier det. Type] [Mus. Zool. H:fors/Spec. typ. No. 15213/ Laparocerus / abditus Roud.]. ZMUH (Coll. Lindberg), Helsinki. Aedeagus and ventrites mounted on a second card (Figure 2A). Paratypes: 1„ fully immature [Madeira /Corujeira/ 2-5-1959 Lindberg] [Paratype] [Laparocerus (Atlantis) / abditus Roudier n.sp. /A Roudier det. Paratype]/ Laparocerus / abditus Roud.], ZMUH (Coll. Lindberg), Helsinki. 1„ [Madeira / Valparaiso/ 13-6-1957 H. Lindberg] [Paratypus] [Genit. 43]. MNHN (Coll. Roudier), Paris.
description: Published as part of Machado, Antonio, 2006, The type material of the species of Laparocerus Schönherr, 1834 (Coleoptera, Curculionidae, Entiminae), pp. 2001-2055 in Journal of Natural History 40 (35 - 37) on page 2005, DOI: 10.1080/00222930601046659, http://zenodo.org/record/5232123
title: Ökologische Nachhaltigkeit als Herausforderung für das Controlling in der Kaffeebranche
Creators: name: Haselwander, Alfred
Publisher: name: FH CAMPUS 02 (CAMPUS 02 Fachhochschule der Wirtschaft)
Year: 2024
Subjects: subject: 658 Allgemeines Management

description: Die Kaffeebranche steht vor der Herausforderung, inwieweit sich ökologische, ökonomische und soziale Nachhaltigkeitsaspekte in die jeweiligen Unternehmen implementieren lassen und wie die einzelnen Unternehmen ihrer Verantwortung gegenüber der Gesellschaft gerecht werden können. Bei diesen Themen muss das Controlling die Unternehmensführung maßgeblich unterstützen. Nachhaltigkeit führt dabei zu einer Erweiterung der entscheidungsrelevanten Informationen und zu einer Veränderung der Sichtweise, deren Schwerpunkt bis dato auf rein ökonomische Ziele mit ihrem Schwerpunkt auf dem Shareholdervalue und Gewinn bestand. Das Ziel der hier vorliegenden Forschungsarbeit ist es, die Implementierung von Nachhaltigkeit in das Controlling und ihre Auswirkungen und Herausforderungen, die sich daraus ergeben, zu untersuchen. Die umfassende Literaturrecherche bildete die Basis für die leitfadengestützten ExpertInneninterviews. Diese wurden im Anschluss, nach der inhaltlich-strukturierten Inhaltsanalyse nach Kuckartz ausgewertet. Die Forschungsergebnisse zeigen, dass es schwer fällt die ökologische Nachhaltigkeit getrennt von der ökonomischen und sozialen zu betrachten. Dazu sind diese zu eng miteinander verwoben. Die steigende Bedeutung von Nachhaltigkeit wird durch Theorie und Empirie dargelegt. Die Umsetzung von Nachhaltigkeitsaspekten in den Unternehmen wird stark von der Einstellung und der Ideologie der Unternehmensführung beeinflusst. Genauso hat diese Ideologie Einfluss darauf, inwieweit diese Verantwortung gegenüber der Gesellschaft wahrgenommen wird. Des Weiteren zeigt die Empirie, dass die Größe der Unternehmen und die Dauer des Unternehmensbestehens Einfluss auf die Umsetzung des Controllings in den jeweiligen Unternehmen haben. Dieser Einfluss zeigt sich auch bei der Preiskalkulation und bei den dafür verwendetet Werkzeugen. Durch die Implementierung von Nachhaltigkeitsaspekten entstehen für das Controlling neue Herausforderungen. Ehemals kennzahlenbasierte, klassische, auf den Gewinn fokussierte Methoden müssen durch neue ersetzt werden, um auf diese Herausforderungen zu reagieren. Weitere Forschung könnte ergründen, welche das sind und inwieweit sie sich von den klassischen Methoden unterscheiden.
Structural and productivity change in US agriculture, 1950-1982
Creators: name: Huffman, Prof. Wallace E.
name: Evenson, Prof. Robert E.
name: Huffman, Prof. Wallace E.
name: Evenson, Prof. Robert E.
Publisher: name: Unknown
Year: 2001
Subjects: subject: Production Economics
subject: Productivity Analysis
subject: Farm structure
subject: Total factor productivity
subject: Farm size
subject: Specialization
subject: Part-time farming
subject: Research and development
subject: United States

description: This paper tests whether structural change in US agriculture is an important channel to TFP growth and evaluates the relative impact of (i) public research and education policies, (ii) private R&D and market forces, and (iii) government farm programs on structural change. We specify a structural econometric model, fit it to US state aggregate data, 1953-1982, and use the associated reduced-form model to perform counter-factual policy simulations. The findings include: structural change is a channel to TFP growth in both crop and livestock subsector, i.e. specialization, size, and part-time farming do impact TFP, holding other variables constant. Public R&D and education have been at least as important as private R&D and market forces for changing livestock specialization, farm size, and farmers' off-farm work participation over the study period, but private R&D and market forces have been relatively more important for crop specialization. Changes in farm commodity programs had little impact on farm structure over these study period. Overall, we conclude that if public R&D and education policies had been unchanged at their 1950 values over 1950-1982, major structural changes in US agriculture would have occurred anyway. The forces of private R&D and market forces were at work, including a decline in the price of machinery services and agricultural chemicals, relative to the farm wage. © 2001 Elsevier Science B.V. All rights reserved.
Gains and structural effects of exploiting scale-economies in Norwegian dairy production
Creators: name: Loyland, Knut
name: Ringstad, Vidar
name: Loyland, Knut
name: Ringstad, Vidar
Publisher: name: Unknown
Year: 2001
Subjects: subject: Livestock Production/Industries
subject: Production Economics
subject: Dairy production
subject: Economies of scale
subject: Cost functions
subject: Technical change

description: In this paper, we present calculations of the economic gains in terms of reduced costs by exploiting scale-economies in dairy production in Norway, and the effect this would have had on the number of farms. We also explore whether or not optimal scale and unexploited scale-economies change over time due to scale-augmenting technical change. The analysis is based on homothetic cost functions estimated by means of data for individual dairy farms for the period 1972-1996. For 1972, we find that, by full exploitation of scale-economies, the costs could have been reduced by almost 40%, while the number of farms would have been reduced by more than 85%. The number of small farms has been substantially reduced in the period considered. This fact, combined with small scale-augmenting technical change, implies that the gains and structural effects of exploiting scale-economies have decreased over time. In 1996, costs could have been reduced by close to 30% by full exploitation of scale-economies, while the number of farms would have been reduced by slightly more than 70%. Thus, both gains and structural effects are substantially less than in 1972. Nevertheless, the calculated gains for 1996 make almost 5 billion NOK. This corresponds almost exactly to the total public support to the dairy farms in 1996. The unexploited scale-economies are largely due to the agricultural policy. Thus, a substantial share of the same can be considered as part of the 'price' the Norwegian society has to pay for this policy. In addition, there are likely to be large hidden costs of this policy due in particular to the quota system and other direct production regulations. They imply that technical innovations and other efficiency-improving investments requiring increased production to be profitable are not carried out. This is the more likely explanation for the extremely poor efficiency development in Norwegian dairy production in the period studied. © 2001 Elsevier Science B.V. All rights reserved.
Methodology to estimate ionospheric scintillation risk maps and their contribution to position dilution of precision on the ground
Creators: name: Koulouri, Alexandra
name: Smith, Nathan D.
name: Vani, Bruno C.
name: Rimpilainen, Ville
name: Astin, Ivan
name: Forte, Biagio
Publisher: name: arXiv
Year: 2019
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: Satellite-based communications, navigation systems and many scientific instruments rely on observations of trans-ionospheric signals. The quality of these signals can be deteriorated by ionospheric scintillation which can have detrimental effects on the mentioned applications. Therefore, monitoring of ionospheric scintillation and quantifying its effect on the ground are of significant interest. In this work, we develop a methodology which estimates the scintillation induced ionospheric uncertainties in the sky and translates their impact to the end-users on the ground. First, by using the risk concept from decision theory and by exploiting the intensity and duration of scintillation events (as measured by the S4 index), we estimate ionospheric risk maps that could readily give an initial impression on the effects of scintillation on the satellite-receiver communication. However, to better understand the influence of scintillation on the positioning accuracy on the ground, we formulate a new weighted dilution of precision (WPDOP) measure that incorporates the ionospheric scintillation risks as weighting factors for the given satellite-receiver constellations. These weights depend implicitly on scintillation intensity and duration thresholds which can be specified by the end-user based on the sensitivity of the application, for example. We demonstrate our methodology by using scintillation data from South America, and produce ionospheric risk maps which illustrate broad scintillation activity, especially at the equatorial anomaly. Moreover, we construct ground maps of WPDOP over a grid of hypothetical receivers which reveal that ionospheric scintillation can also affect such regions of the continent that are not exactly under the observed ionospheric scintillation structures. Particularly, this is evident in cases when only the Global Positioning System (GPS) is available.
description: Keywords: Ionospheric scintillation risk, dilution of precision, statistics error covariances, weights, South America, S4 index, GNSS positioning uncertainty
Additional file 2 of A systematic review and meta-analysis on the preventive behaviors in response to the COVID-19 pandemic among children and adolescents
Creators: name: Li, Feifei
name: Liang, Wei
name: Rhodes, Ryan E.
name: Duan, Yanping
name: Wang, Xiang
name: Shang, Borui
name: Yang, Yide
name: Jiao, Jiao
name: Yang, Min
name: Supriya, Rashmi
name: Baker, Julien S.
name: Yi, Longyan
Publisher: name: figshare
Year: 2022
Subjects: Medicine
Biotechnology
Biological Sciences not elsewhere classified
Science Policy
Mental Health

description: Additional file 2. Summary of included studies with their characteristics.
Laparocerus aenescens
Creators: name: Machado, Antonio
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Curculionidae
Laparocerus
Laparocerus aenescens

description: Laparocerus aenescens (Wollaston, 1854)
 Omias aenescens Wollaston 1854, p 383.
 Type locality. c. Fonte das Moças – Pico do Arieiro, Island of Madeira.
Lectotype: 1„ [735], Spring 1849 between Fonte das Moças and Pico do Arieiro, leg. Wollaston [Type]. NHM, London (Figure 3B). Paralectotypes: 2 exx [832], same data NHM, London. 11 exx, same data. UMO, Oxford. 7 exx, same data. MNHN (Coll. Oberthür-Wollaston), Paris.
description: Published as part of Machado, Antonio, 2006, The type material of the species of Laparocerus Schönherr, 1834 (Coleoptera, Curculionidae, Entiminae), pp. 2001-2055 in Journal of Natural History 40 (35 - 37) on pages 2005-2006, DOI: 10.1080/00222930601046659, http://zenodo.org/record/5232123
A microscopic quantum dynamics approach to the dilute condensed Bose gas
Creators: name: Koehler, Thorsten
name: Burnett, Keith
Publisher: name: arXiv
Year: 2001
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We derive quantum evolution equations for the dynamics of dilute condensed Bose gases. The approach contains, at different orders of approximation, for cases close to equilibrium, the Gross Pitaevskii equation and the first order Hartree Fock Bogoliubov theory. The proposed approach is also suited for the description of the dynamics of condensed gases which are far away from equilibrium. As an example the scattering of two Bose condensates is discussed.
description: 8 pages, submitted to Phys. Rev. A
Isotopic analytical methods document. The nature and age of basement host rocks and fissure fills in the Lancaster field fractured reservoir, West of Shetland
Creators: name: R.E. Holdsworth
name: R. Trice
name: K. Hardman
name: K.J.W. McCaffrey
name: A. Morton
name: D. Frei
name: E. Dempsey
name: A. Bird
name: S. Rogers
Publisher: name: Geological Society of London
Year: 2019
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Isotopic analytical methods document
ESR Study of (C_5H_{12}N)_2CuBr_4
Creators: name: Zvyagin, S.
name: Watson, B. C.
name: Park, Ju-Hyun
name: Jensen, D. A.
name: Angerhofer, A.
name: Brunel, L. -C.
name: Talham, D. R.
name: Meisel, M. W.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: ESR studies at 9.27, 95.4, and 289.7 GHz have been performed on (C$_5$H$_{12}$N)$_2$CuBr$_4$ down to 3.7 K. The 9.27 GHz data were acquired with a single crystal and do not indicate the presence of any structural transitions. The high frequency data were collected with a polycrystalline sample and resolved two absorbances, consistent with two crystallographic orientations of the magnetic sites and with earlier ESR studies performed at 300 K. Below $B_{C1}=6.6$ T, our data confirm the presence of a spin singlet ground state.
description: 2 pages, 4 figs., submitted 23rd International Conference on Low Temperature Physics (LT-23), Aug. 2002
Aspects of the S transformation Bootstrap
Creators: name: Brehm, Enrico M.
name: Das, Diptarka
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We review and systematize two (analytic) bootstrap techniques in two-dimensional conformal field theories using the S-modular transformation. The first one gives universal results in asymptotic regimes by relating extreme temperatures. Along with the presentation of known results, we use this technique to also derive asymptotic formulae for the Zamolodchikov recursion coefficients which match previous conjectures from numerics and from Regge asymptotic analysis. The second technique focuses on intermediate temperatures. We use it to sketch a methodology to derive a bound on off-diagonal squared OPE coefficients, as well as to improve existing bounds on the spectrum in case of non-negative diagonal OPE coefficients.
description: 27+7 pages, 3 figures, v2 : improved the numerics for torus-one-point function bootstrap, corrected a missing factor in the torus-two-point function, conclusions unchanged, and new references added
Wheat demand in Japanese flour milling industry: a production theory approach
Creators: name: Koo, Won W.
name: Mao, Weining
name: Sakurai, Takeshi
name: Koo, Won W.
name: Mao, Weining
name: Sakurai, Takeshi
Publisher: name: Unknown
Year: 2001
Subjects: subject: Crop Production/Industries
subject: Production Economics
subject: Productivity Analysis
subject: Import demand
subject: Japan
subject: Wheat
subject: Production theory
subject: Translog cost function

description: A production approach based on the translog cost function is used to analyze import demand for wheat differentiated by class and country of origin in the Japanese wheat flour milling industry. Results indicate that US wheat faces strong competition in the Japanese wheat market, but its multiple classes and end-use characteristics enable the US to preserve the largest market share in Japan.© 2001 Elsevier Science B.V. All rights reserved.
Technical change in Senegal's irrigated rice sector: impact assessment under uncertainty
Creators: name: Fisher, Monica G.
name: Masters, William A.
name: Sidibe, Mamadou
name: Fisher, Monica G.
name: Masters, William A.
name: Sidibe, Mamadou
Publisher: name: Unknown
Year: 2001
Subjects: Crop Production/Industries
Research and Development/Tech Change/Emerging Technologies

description: This paper addresses the prospects for technical change in the in·igated rice sector of Senegal, and measures ex-ante the economic returns to recent research efforts. In 1994, three new rice varieties were released to farmers in the Senegal River Valley (SRV), the major irrigated rice region in Senegal. The productivity advantage of the new varieties is based primarily on early maturity, which permits double-cropping. (The seeds are also higher yielding than existing cultivars.) We use a conventional [Akino and Hayami (1975), Am. J. Agric. Econ. 57, l-10] partial-equilibrium model adapted to the Senegalese situation, to assess the social benefits of research and compare those to its costs in calculating the internal rate of return (IRR). To account for uncertainty regarding the future values of model variables we use simulation which allows us to generate a distribution of all possible outcomes of the IRR. We find that rice research is almost certain to have a very high payoff over the 1995-2004 period. The expected value of the IRR is calculated to be 121% per year, with a 97.5% probability that it lies above annual capital costs of 18%. © 2001 Elsevier Science B.V. All rights reserved.
Future competitive bioenergy technologies in the German heat sector: Findings from an economic optimization approach
Creators: name: Jordan, Matthias
name: Lenz, Volker
name: Millinger, Markus
name: Oehmichen, Katja
name: Thrän, Daniela
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Economics (econ.GN)
subject: FOS: Economics and business

description: Meeting the defined greenhouse gas (GHG) reduction targets in Germany is only possible by switching to renewable technologies in the energy sector. A major share of that reduction needs to be covered by the heat sector, which accounts for ~35% of the energy based emissions in Germany. Biomass is the renewable key player in the heterogeneous heat sector today. Its properties such as weather independency, simple storage and flexible utilization open up a wide field of applications for biomass. However, in a future heat sector fulfilling GHG reduction targets and energy sectors being increasingly connected: which bioenergy technology concepts are competitive options against other renewable heating systems? In this paper, the cost optimal allocation of the limited German biomass potential is investigated under longterm scenarios using a mathematical optimization approach. The model results show that bioenergy can be a competitive option in the future. Especially the use of biomass from residues can be highly competitive in hybrid combined heat and power (CHP) pellet combustion plants in the private household sector. However, towards 2050, wood based biomass use in high temperature industry applications is found to be the most cost efficient way to reduce heat based emissions by 95% in 2050.
Theoretical investigation of one-dimensional cavities in two-dimensional photonic crystals
Creators: name: Foteinopoulou, S.
name: Soukoulis, C. M.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We study numerically the features of the resonant peak of one-dimensional (1-D) dielectric cavities in a two-dimensional (2-D) hexagonal lattice. We use both the transfer matrix method and the finite difference time-domain (FDTD) method to calculate the transmission coefficient. We compare the two methods and discuss their results for the transmission and quality factor Q of the resonant peak. We also examine the dependence of Q on absorption and losses, the thickness of the sample and the lateral width of the cavity. The Q- factor dependence on the width of the source in the FDTD calculations is also given.
description: 25 pages, 8 figures
Formation rate of LB-1-like systems through dynamical interactions
Creators: name: Tanikawa, Ataru
name: Kinugawa, Tomoya
name: Kumamoto, Jun
name: Fujii, Michiko S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We estimate formation rates of LB-1-like systems through dynamical interactions in the framework of the theory of stellar evolution before the discovery of the LB-1 system. The LB-1 system contains $\sim 70M_\odot$ black hole (BH), so-called pair instability (PI)-gap BH, and B-type star with solar metallicity, and has nearly zero eccentricity. The most efficient formation mechanism is as follows. In an open cluster, a naked helium (He) star (with $\sim 20M_\odot$) collides with a heavy main-sequence (MS) star (with $\sim 50M_\odot$) which has a B-type companion. The collision results in a binary consisting of the collision product and B-type star with a high eccentricity. The binary can be circularized through the dynamical tide with radiative damping of the collision-product envelope. Finally, the collision product collapses to a PI-gap BH, avoiding pulsational pair instability and pair instability supernovae because its He core is as massive as the pre-colliding naked He star. We find that the number of LB-1-like systems in the Milky Way galaxy is $\sim 0.01 (ρ_{\rm oc} / 10^4 M_\odot \mbox{pc}^{-3})$, where $ρ_{\rm oc}$ is the initial mass densities of open clusters. If we take into account LB-1-like systems with O-type companion stars, the number increases to $\sim 0.03 (ρ_{\rm oc} / 10^4 M_\odot \mbox{pc}^{-3})$. This mechanism can form LB-1-like systems at least 10 times more efficiently than the other mechanisms: captures of B-type stars by PI-gap BHs, stellar collisions between other type stars, and stellar mergers in hierarchical triple systems. We conclude that no dynamical mechanism can explain the presence of the LB-1 system.
description: 9 pages, 1 figure, accepted for publication in PASJ
Laparocerus australis
Creators: name: Machado, Antonio
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Curculionidae
Laparocerus
Laparocerus australis

description: Laparocerus australis (Wollaston, 1854) *
 Atlantis australis Wollaston 1854, p 370.
 Type locality. Quinta das Palmeiras, supra Funchal, Island of Madeira.
 Lectotype: 1„ without anterior legs [637] Quinta das Palmeiras, til tree, 1850, leg. Wollaston [„] [lauripotens, Woll. elim.]. NHM, London. Paralectotypes: 2♀♀ one immature [637]. Same data. [type] [♀] [Atlantis / (noctivagans) / australis /Type Woll.]. NHM, London.
 Remarks. Wollaston (1857, p 114) synonymized this species and A. lauripotens Wollaston, 1854 with A. noctivagans Wollaston, 1854, but later he recognized A. lauripotens as a valid species, to which A. australis should be ascribed as synonym (Wollaston 1871, p 273).
description: Published as part of Machado, Antonio, 2006, The type material of the species of Laparocerus Schönherr, 1834 (Coleoptera, Curculionidae, Entiminae), pp. 2001-2055 in Journal of Natural History 40 (35 - 37) on page 2007, DOI: 10.1080/00222930601046659, http://zenodo.org/record/5232123
Recovery of massless Dirac fermions at charge neutrality in strongly interacting twisted bilayer graphene with disorder
Creators: name: Thomson, Alex
name: Alicea, Jason
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Stacking two graphene layers twisted by the 'magic angle' $θ\approx 1.1^\circ$ generates flat energy bands, which in turn catalyzes various strongly correlated phenomena depending on filling and sample details. At charge neutrality, transport measurements reveal superficially mundane semimetallicity (as expected when correlations are weak) in some samples yet robust insulation in others. We propose that the interplay between interactions and disorder admits either behavior, even when the system is strongly correlated and locally gapped. Specifically, we argue that strong interactions supplemented by weak, smooth disorder stabilize a network of gapped quantum valley Hall domains with spatially varying Chern numbers determined by the disorder landscape--even when an entirely different order is favored in the clean limit. Within this scenario, sufficiently small samples that realize a single domain display insulating transport characteristics. Conversely, multi-domain samples exhibit re-emergent massless Dirac fermions formed by gapless domain-wall modes, yielding semimetallic behavior except on the ultra-long scales at which localization becomes visible. We discuss experimental tests of this proposal via local probes and transport. Our results highlight the crucial role that randomness can play in ground-state selection of twisted heterostructures, an observation that we expect to have further ramifications at other fillings.
description: 16 pages main text + 24 pages appendix, 11 figures (minor edits)
title: Política Nacional Ambiental Para el Desarrollo Sostenible de los Espacios Oceánicos y las Zonas Costeras e Insulares de Colombia
Creators: name: Ministerio Del Medio Ambiente De Colombia
name: Andrade Pérez, Ángela. Navarrete-Le-Bas
Publisher: name: Ministerio del Medio Ambiente
Year: 2001
Subjects: mizc; zonas costeras; gobernabilidad

description: El documento de Política aprobado el día 5 de diciembre de 2000, se fundamenta en la promoción de la utilización de las herramientas que nos brinda el ordenamiento territorial para asignar usos sostenibles al territorio marítimo y costero nacional, a propiciar formas mejoradas de gobierno que armonicen y articulen la planificación del desarrollo costero sectorial, a la conservación y restauración de los bienes y servicios que proveen sus ecosistemas, a la generación de conocimiento que permita la obtención de información estratégica para la toma de decisiones de manejo integrado de esta áreas y a impulsar procesos de autogestión comunitaria y de aprendizaje que permitan integrar a los múltiples usuarios de la zona costera en la gestión de su manejo sostenible.
USING EFFECTIVE TECHNOLOGICAL TOOLS IN TEACHING ESL
Creators: name: Sodiqjonova, Gulhayo
Publisher: name: Zenodo
Year: 2025

description: This article explores the role of technological tools in teaching English as a Second Language (ESL). It discusses interactive platforms, virtual classrooms, multimedia resources, and AI-powered tools, highlighting their benefits and challenges. The study emphasizes the transformative impact of these tools on ESL education and provides strategies for overcoming common barriers.
Additional file 6 of A systematic review and meta-analysis on the preventive behaviors in response to the COVID-19 pandemic among children and adolescents
Creators: name: Li, Feifei
name: Liang, Wei
name: Rhodes, Ryan E.
name: Duan, Yanping
name: Wang, Xiang
name: Shang, Borui
name: Yang, Yide
name: Jiao, Jiao
name: Yang, Min
name: Supriya, Rashmi
name: Baker, Julien S.
name: Yi, Longyan
Publisher: name: figshare
Year: 2022
Subjects: Medicine
Biotechnology
Biological Sciences not elsewhere classified
Science Policy
Mental Health

description: Additional file 6. R syntax.
Untitled ItemChinua Achebe’s Romantics and the Limits of Discourse
Creators: name: Amechi Akwanya
Publisher: name: figshare
Year: 2019
Subjects: Art

description: Many readings of Chinua Achebe’s novels come with expectations as regards the protagonists. To those whose expectations are not met, the tendency is to unleash moral judgments on these characters. Reading with an ‘open’ mind, on the other hand, really amounts to reading against the backdrop of the whole literary tradition, which would allow the spotting of similar and contrasting feature to existents in other works. Attempting such a reading is what enables us to see shared features with other literary works. Such are the romantic traits we see in the characters. In this paper, we shall explore the way in which the romantic traits of Achebe’s characters reflect in their judgments and actions, giving rise to the particular quality of the tragedies they are caught up in.
Laparocerus azoricus Drouet 1859
Creators: name: Machado, Antonio
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Curculionidae
Laparocerus
Laparocerus azoricus

description: Laparocerus azoricus Drouet, 1859
 Laparocerus azoricus Drouet 1859, p 256.
 Type locality. Horta–Caldeira, Island of Faial, Azores.
 Lectotype: 1„ [Açores]. Road from Horta to Caldeira, May to September 1857, leg. Drouet (ex litt.). The box label5[Laparocerus Azoricus A.Drouet / Otiorrhynchus Hartungi Heer, Iles Açores]. MHN, Troyes. Paralectotypes: 6 exx [Açores]+one of them [Laparocerus n.sp.]. MHN, Troyes. 2 exx [Azores], MNHN, Paris.
 Remarks. According to Drouet (1859) the original series was almost 100 specimens. I have found many very old specimens of L. azoricus in several institutional collections, but unfortunately they do not bear any supporting evidence of being syntypes. Hartung and Morelet also collected the species in abundance during the same trip. L. azoricus is the type species of the subgenus Droetius Méquignon, 1942, by original designation. The abovementioned Otiorhynchus hartungi Heer is a nomen nudum.
description: Published as part of Machado, Antonio, 2006, The type material of the species of Laparocerus Schönherr, 1834 (Coleoptera, Curculionidae, Entiminae), pp. 2001-2055 in Journal of Natural History 40 (35 - 37) on page 2007, DOI: 10.1080/00222930601046659, http://zenodo.org/record/5232123
Well-posedness of Hibler's dynamical sea-ice model
Creators: name: Liu, Xin
name: Thomas, Marita
name: Titi, Edriss
Publisher: name: Weierstrass Institute
Year: 2021
Subjects: subject: Well-posedness
subject: ice rheology
subject: sea-ice
subject: Hibler sea-ice model
subject: 35A01
subject: 35A02
subject: 35Q86
subject: 86A05

description: This paper establishes the local-in-time well-posedness of solutions to an approximating system constructed by mildly regularizing the dynamical sea ice model of it W.D. Hibler, Journal of Physical Oceanography, 1979. Our choice of regularization has been carefully designed, prompted by physical considerations, to retain the original coupled hyperbolic-parabolic character of Hibler's model. Various regularized versions of this model have been used widely for the numerical simulation of the circulation and thickness of the Arctic ice cover. However, due to the singularity in the ice rheology, the notion of solutions to the original model is unclear. Instead, an approximating system, which captures current numerical study, is proposed. The well-posedness theory of such a system provides a first-step groundwork in both numerical study and future analytical study.
Filling Control of the Pyrochlore Oxide Y2Ir2O7
Creators: name: Fukazawa, Hideto
name: Maeno, Yoshiteru
Publisher: name: arXiv
Year: 2002
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report the filling control of the pyrochlore oxide Y2Ir2O7. Metallic ground state appears with increasing substitution content x (x >= 0.3). We have revealed that the density of states at the Fermi level rapidly changes with x by this filling control of Y2Ir2O7.
description: 2 pages, 3 figures, submitted to J. Phys. Soc. Jpn
title: Chancen und Risiken des Megatrends Mobilität für den steirischen Automobilhandel
Creators: name: Gruber, Anja
Publisher: name: FH CAMPUS 02 (CAMPUS 02 Fachhochschule der Wirtschaft)
Year: 2024
Subjects: subject: 658 Allgemeines Management

description: Globale Megatrends, insbesondere die Elektromobilität, Mobilitätsdienstleistungen sowie autonome und vernetzte Fahrzeuge, führen einen Umbruch in der Automobilbranche herbei. Ein weiterer Treiber für die Transformation sind Zielvorgaben der Europäische Kommission, die den CO2- Austoß von Neufahrzeugen bis 2035 zur Gänze zu verbieten. Um die Klimaziele der EU zu erreichen sind alternative Antriebsformen, allen voran Elektrofahrzeuge, gefragt. Darüber hinaus leiten sozio-kulturelle Veränderungen, der Wandel des Konsumverhaltens und der Besitzkultur in der Gesellschaft neue Formen der Mobilitätsnutzung ein. Durch den Einfluss der Digitalisierung in der Automobilwirtschaft wird der Weg hin zu vernetzten und autonom gesteuerten Fahrzeugen geebnet. Die intelligente Verknüpfung dieser vier Mobilitätstrends stellt die Grundlage für die Revolution in der Automobilbranche dar. Aufgrund dieser Megatrends müssen Automobilhändler nicht nur ihre traditionellen Geschäftsmodelle kontinuierlich verbessern, sondern auch neue innovative Geschäftsmodelle entwickeln. Nur so besteht die Möglichkeit nicht durch neuen Konkurrenten außerhalb der Branche verdrängt zu werden und den Wandel erfolgreich zu meistern. Daher untersucht die vorliegende Masterarbeit Chancen und Risiken, die sich aufgrund des Megatrends Mobilität und den damit verbundenen Mobilitätstrends für den steirischen Automobilhandel ergeben. Die Auswirkungen der Trendentwicklungen auf die Automobilbranche, sowie die dadurch entstehenden neuen Geschäftsmodelle und Wertschöpfungspotenziale werden im theoretischen Teil dieser Arbeit dargestellt. Die empirische Untersuchung erfolgt anhand von Experteninterviews, um die Bedeutung und künftige Entwicklung der Megatrends auf den steirische Automobilhandel aufzuzeigen und welche Strategien in der Zukunft für den wirtschaftlichen Erfolg angewendet werden müssen. Die Ergebnisse der Untersuchung zeigen, dass die Megatrends bereits Einzug in die steirische Automobilbranche gehalten haben und bisherige Geschäftsmodelle in Frage stellen bzw. neue, innovative Geschäftsmodelle für die Bereiche Vertrieb und After Sales erforderlich machen. In Zukunft werden sich klassische Automobilhändler zu Servicedienstleistern rund um das Thema Mobilität transformieren müssen, um den Trendentwicklungen gerecht zu werden und auch weiterhin wirtschaftlich erfolgreich sein zu können.
Mass limits for the progenitor star of supernova 2001du and other type II-P supernovae
Creators: name: Smartt, S. J.
name: Maund, J. R.
name: Gilmore, G. F.
name: Tout, C. A.
name: Kilkenny, D.
name: Benetti, S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The supernova SN2001du in the galaxy NGC1365 (19+/-2Mpc), is a core-collapse event of type II-P. Images of this galaxy, have been taken with HST approximately 6.6 years before discovery and include the supernova position on the WFPC2 field of view. We have observed the supernova with the WFPC2 to allow accurate differential astrometry of SN2001du on the pre-explosion frames. There is a marginal detection (3-sigma) of a source close to the supernova position on the prediscovery V-band frame, however it is not precisely coincident and we do not believe it to be a robust detection of a point source. We conclude that there is no stellar progenitor at the supernova position and derive sensitivity limits of the prediscovery images which provide an upper mass limit for the progenitor star. We estimate that the progenitor had a mass of less than 15M_sol. We revisit two other nearby SNe II-P which have high quality pre-explosion images, and refine the upper mass limits for the progenitor stars. Finally we compile all the direct information available for the progenitors of eight nearby core-collapse supernovae and compare their mass estimates. These are compared with the latest stellar evolutionary models of pre-supernova evolution which have attempted to relate metallicity and mass to the supernovae type. Reasonable agreement is found for the lower mass events (generally the II-P), but some discrepancies appear at higher masses. (abridged).
description: Minor changes, accepted for publication in MNRAS, full resolution version on http://www.ast.cam.ac.uk/~sjs/papers/sn2001du_smartt.ps
Cosmological constraints from the redshift dependence of the Alcock-Paczynski effect: Fourier space analysis
Creators: name: Luo, Xiaolin
name: Wu, Ziyong
name: Li, Xiao-Dong
name: Li, Miao
name: Li, Zhigang
name: Sabiu, Cristiano G.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The tomographic Alcock-Paczynski (AP) method utilizes the redshift evolution of the AP distortion to place constraints on cosmological parameters. It has proved to be a robust method that can separate the AP signature from the redshift space distortion (RSD) effect, and deliver powerful cosmological constraints using the $\lesssim 40h^{-1}\ \rm Mpc$ clustering region. In previous works, the tomographic AP method was performed via the anisotropic 2-point correlation function statistic. In this work we consider the feasibility of conducting the analysis in the Fourier domain and examine the pros and cons of this approach. We use the integrated galaxy power spectrum (PS) as a function of direction, $\hat P_{Δk}(μ)$, to quantify the magnitude of anisotropy in the large-scale structure clustering, and use its redshift variation to do the AP test. The method is tested on the large, high resolution Big-MultiDark Planck (BigMD) simulation at redshifts $z=0-1$, using the underlying true cosmology $Ω_m=0.3071,\ w=-1$. Testing the redshift evolution of $\hat P_{Δk}(μ)$ in the true cosmology and cosmologies deviating from the truth with $δΩ_m=0.1,\ δw=0.3$, we find that the redshift evolution of the AP distortion overwhelms the effects created by the RSD by a factor of $\sim1.7-3.6$. We test the method in the range of $k\in(0.2,1.8)\ h\ \rm Mpc^{-1}$, and find that it works well throughout the entire regime. We tune the halo mass within the range $2\times 10^{13}$ to $10^{14}\ M_{\odot}$, and find that the change of halo bias results in $\lesssim 5 \%$ change in $\hat P_{Δk}(μ)$, which is less significant compared with the cosmological effect. Our work shows that it is feasible to conduct the tomographic AP analysis in the Fourier space.
description: 7 pages, 7 figures
Transients due to instabilities hinder Kardar-Parisi-Zhang scaling: a unified derivation for surface growth by electrochemical and chemical vapor deposition
Creators: name: Cuerno, Rodolfo
name: Castro, Mario
Publisher: name: arXiv
Year: 2001
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We propose a unified moving boundary problem for surface growth by electrochemical and chemical vapor deposition, which is derived from constitutive equations into which stochastic forces are incorporated. We compute the coefficients in the interface equation of motion as functions of phenomenological parameters. The equation features the Kardar-Parisi-Zhang (KPZ) non-linearity and instabilities which, depending on surface kinetics, can hinder the asymptotic KPZ scaling. Our results account for the universality and the experimental scarcity of KPZ scaling in the growth processes considered.
description: 4 double-column pages, Revtex4, no figures; to appear in Physical Review Letters
Minutes of annual general assembly meetings 2 (D8.15)
Creators: name: IMI ConcePTION Project Management Office
Publisher: name: Zenodo
Year: 2021

description: This deliverable summarizes the second virtual General Assembly that was held on April 13 and 14, 2021. It shares insights on this meeting that provided the work packages and a flash-forward of a year of the project in order to highlight its key accomplishments.
Laparocerus bacalladoi Machado 2005
Creators: name: Machado, Antonio
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Curculionidae
Laparocerus
Laparocerus bacalladoi

description: Laparocerus bacalladoi Machado, 2005
 Laparocerus bacalladoi Machado 2005, p 540, Figures 1, 2 (habitus, aedeagus).
 Type locality. Valle San Lorenzo, Tenerife, Canary Islands (UTM 28 R 03383 31041).
 Holotype: 1„ [Tenerife, Islas Canarias /Valle de San Lorenzo, 200 m / 27-12-2002, Kleinia, Lavand. / # 2580 leg. A. Machado] [Holotypus / Laparocerus bacalladoi n.sp. /A. Machado] TFMC (reg. CO-15501), Santa Cruz de Tenerife. Paratypes: 2 exx, same data, NHM, London. 2 exx same data. MNCN, Madrid. 2 exx same data, DEI, Müncheberg. 2 exx, same data; 1 ex (immature) [Tenerife, El Médano, 8-1-1978 J.M. Fernández] TFMC, Santa Cruz de Tenerife. 99 exx, same data as holotype, 2 exx, idem. 25 January 2002, leg. A. Machado, AMC, La Laguna. 5 exx, 4 February 1964, Los Cristianos, leg. Th. Palm. MZLU, Lund.
 Remarks. The holotype is no longer in my private collection. Following the recommendations of the ICZN, I have donated it to the Natural History Museum of Tenerife (September 2006).
description: Published as part of Machado, Antonio, 2006, The type material of the species of Laparocerus Schönherr, 1834 (Coleoptera, Curculionidae, Entiminae), pp. 2001-2055 in Journal of Natural History 40 (35 - 37) on page 2008, DOI: 10.1080/00222930601046659, http://zenodo.org/record/5232123