cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
How Dry is the Brown Dwarf Desert?: Quantifying the Relative Number of Planets, Brown Dwarfs and Stellar Companions around Nearby Sun-like Stars
Creators: name: Grether, Daniel
name: Lineweaver, Charles H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Sun-like stars have stellar, brown dwarf and planetary companions. To help constrain their formation and migration scenarios, we analyse the close companions (orbital period < 5 years) of nearby Sun-like stars. By using the same sample to extract the relative numbers of stellar, brown dwarf and planetary companions, we verify the existence of a very dry brown dwarf desert and describe it quantitatively. With decreasing mass, the companion mass function drops by almost two orders of magnitude from 1 M_Sun stellar companions to the brown dwarf desert and then rises by more than an order of magnitude from brown dwarfs to Jupiter-mass planets. The slopes of the planetary and stellar companion mass functions are of opposite sign and are incompatible at the 3 sigma level, thus yielding a brown dwarf desert. The minimum number of companions per unit interval in log mass (the driest part of the desert) is at M = 31^{+25}_{-18} M_Jup. Approximately 16% of Sun-like stars have close (P < 5 years) companions more massive than Jupiter: 11% +- 3% are stellar, <1% are brown dwarf and 5% +- 2% are giant planets. The steep decline in the number of companions in the brown dwarf regime, compared to the initial mass function of individual stars and free-floating brown dwarfs, suggests either a different spectrum of gravitational fragmentation in the formation environment or post-formation migratory processes disinclined to leave brown dwarfs in close orbits.
description: Conforms to version accepted by ApJ. 13 pages formatted with emulateapj.cls
title: Модернизация форм и содержания педагогического образования в условиях региона
Creators: name: ELS IPR BOOKS
Publisher: name: Северо-Осетинский государственный педагогический институт
Year: 2018

description: В коллективной монографии рассматривается проблема практико-ориентированного обучения в системе профессионально-педагогического образования, дается обоснование его эффективности в подготовке компетентного педагога, способного к осуществлению предстоящей профессиональной деятельности, к системному действию в ней, и владеющего навыками решения новых задач в сфере образования. Предложенные авторами формы и содержание педагогического образования гарантируют формирование практико-ориентированного педагога, отвечающего социально-экономическим потребностям региона и запросам педагогической практики. Адресуется студентам, магистрантам, аспирантам, преподавателям педагогических направлений подготовки.
Additional file 1 of Ultrastructural and dynamic studies of the endosomal compartment in Down syndrome
Creators: name: Botté, Alexandra
name: Lainé, Jeanne
name: Xicota, Laura
name: Heiligenstein, Xavier
name: Fontaine, Gaëlle
name: Kasri, Amal
name: Rivals, Isabelle
name: Pollyanna Goh
name: Orestis Faklaris
name: Jack-Christophe Cossec
name: Morel, Etienne
name: Anne-Sophie Rebillat
name: Nizetic, Dean
name: Raposo, Graça
name: Potier, Marie-Claude
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 60506 Virology

description: Additional file 1: Supplentary Figure S1. Representative image of a cluster of EEA1-DAB labelled endosomes in a LCL cell from an individual with DS. Electron micrographs along 8 serial 50 nm-thick sections. Note that sections 3 and 6 are missing. Individual endosomes are identified by differently colored dots, and most of them can be seen in 2 successive sections. The cluster contains at least 17 distinct endosomes and would appear as polycyclic if it was fluorescently labelled. Note that the DAB precipitate accumulating around surrounding small vesicles makes them appear as pseudo-coated.
Аффиксация грамматиканинг муҳим объектларидан бири сифатида
Creators: name: Zayniddin Sanakulov
Publisher: name: figshare
Year: 2020
Subjects: subject: 200402 Computational Linguistics
subject: FOS: Languages and literature

description: Ушбу мақола немис ва ўзбек тиллари сўз ясалиши тизимига бағишланган бўлиб, унда сўз ясалиши грамматиканинг муҳим бир объекти сифатида қаралиши ёритилган.
title: Организация проектной деятельности младших школьников
Creators: name: ELS IPR BOOKS
Publisher: name: Северо-Осетинский государственный педагогический институт
Year: 2020

description: В пособии рассматриваются особенности организации современной образовательной технологии – проектной деятельности, являющейся значимым компонентом формирующихся универсальных учебных умений младших школьников. Рекомендуется студентам, педагогическим работникам, а также всем, кто интересуется проектной деятельностью в образовательных учреждениях.
On the mixing coefficients of piecewise monotonic maps
Creators: name: Aaronson, Jon
name: Nakada, Hitoshi
Publisher: name: arXiv
Year: 2004
Subjects: subject: Dynamical Systems (math.DS)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 37A25, 37E05 (37D20, 37C30, 37C40, 60G10)

description: We investigate the mixing coefficients of interval maps satisfying Rychlik's conditions. A mixing Lasota-Yorke map is reverse $ϕ$-mixing. If its invariant density is uniformly bounded away from 0, it is $ϕ$-mixing iff all images of all orders are big in which case it is $ψ$-mixing. Among $\b$-transformations, non-$ϕ$-mixing is generic. In this sense, the asymmetry of $ϕ$-mixing is natural.
description: correction of misprint in the definition of weak mixing
Twisted Electromagnetic Modes and Sagnac Ring-Lasers
Creators: name: Burton, David A.
name: Noble, Adam
name: Tucker, Robin W.
name: Wiltshire, David L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A new approximation scheme, designed to solve the covariant Maxwell equations inside a rotating hollow slender conducting cavity (modelling a ring-laser), is constructed. It is shown that for well-defined conditions there exist TE and TM modes with respect to the longitudinal axis of the cavity. A twisted mode spectrum is found to depend on the integrated Frenet torsion of the cavity and this in turn may affect the Sagnac beat frequency induced by a non-zero rotation of the cavity. The analysis is motivated by attempts to use ring-lasers to measure terrestrial gravito-magnetism or the Lense-Thirring effect produced by the rotation of the Earth.
description: LaTeX 31 pages, 3 Figures
Additional file 1 of 18F-FDG PET-guided diffusion tractography reveals white matter abnormalities around the epileptic focus in medically refractory epilepsy: implications for epilepsy surgical evaluation
Creators: name: Poirier, Stefan E.
name: Kwan, Benjamin Y. M.
name: Jurkiewicz, Michael T.
name: Samargandy, Lina
name: Steven, David A.
name: Suller-Marti, Ana
name: Cheung, Victor Lam Shin
name: Khan, Ali R.
name: Romsa, Jonathan
name: Prato, Frank S.
name: Burneo, Jorge G.
name: Thiessen, Jonathan D.
name: Udunna C. Anazodo
Publisher: name: figshare
Year: 2020
Subjects: subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1: Figure S1. Diffusion MR image analysis pipeline. Table S1. EEG and MRI findings from clinical reports and visual assessment. Table S2. SUV analysis in hypometabolic PET ROIs and contralateral ROIs from AI mapping in 14 MRE patients. Table S3. Regional FA analysis in WM surrounding hypometabolic PET ROIs and contralateral ROIs detected by AI mapping of FDG-PET.
Space Time Matter inflation
Creators: name: Anabitarte, Mariano
name: Bellini, Mauricio
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study a model of power-law inflationary inflation using the Space-Time-Matter (STM) theory of gravity for a five dimensional (5D) canonical metric that describes an apparent vacuum. In this approach the expansion is governed by a single scalar (neutral) quantum field. In particular, we study the case where the power of expansion of the universe is $p \gg 1$. This kind of model is more successful than others in accounting for galaxy formation.
description: accepted in JMP
Tuning the Exo-Space Weather Radio for Stellar Coronal Mass Ejections
Creators: name: Alvarado-Gómez, Julián D.
name: Drake, Jeremy J.
name: Fraschetti, Federico
name: Garraffo, Cecilia
name: Cohen, Ofer
name: Vocks, Christian
name: Poppenhäger, Katja
name: Moschou, Sofia P.
name: Yadav, Rakesh K.
name: Manchester, Ward B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Coronal mass ejections (CMEs) on stars other than the Sun have proven very difficult to detect. One promising pathway lies in the detection of type II radio bursts. Their appearance and distinctive properties are associated with the development of an outward propagating CME-driven shock. However, dedicated radio searches have not been able to identify these transient features in other stars. Large Alfvén speeds and the magnetic suppression of CMEs in active stars have been proposed to render stellar eruptions "radio-quiet". Employing 3D magnetohydrodynamic simulations, we study here the distribution of the coronal Alfvén speed, focusing on two cases representative of a young Sun-like star and a mid-activity M-dwarf (Proxima Centauri). These results are compared with a standard solar simulation and used to characterize the shock-prone regions in the stellar corona and wind. Furthermore, using a flux-rope eruption model, we drive realistic CME events within our M-dwarf simulation. We consider eruptions with different energies to probe the regimes of weak and partial CME magnetic confinement. While these CMEs are able to generate shocks in the corona, those are pushed much farther out compared to their solar counterparts. This drastically reduces the resulting type II radio burst frequencies down to the ionospheric cutoff, which impedes their detection with ground-based instrumentation.
description: 13 Pages, 6 Figures, 2 Tables. Accepted for publication in The Astrophysical Journal
Análise do ambiente institucional e organizacional da piscicultura no estado de Mato Grosso do Sul
Creators: name: Satolani, Monica Ferreira
name: Correa, Cynthia Candida
name: Fagundes, Mayra Batista Bitencourt
name: Satolani, Monica Ferreira
name: Correa, Cynthia Candida
name: Fagundes, Mayra Batista Bitencourt
Publisher: name: Unknown
Year: 2008
Subjects: Institutional and Behavioral Economics

description: The pisciculture can be a gear lever of social and economical development, making possible the effective utilization of the local natural resources, principaly the hídricos and the creation of positions of salaried works. However, countless variables that condition exist or they affect the success of a rural enterprise. In that sense, the present study has as objective demonstrates the organizational and institutional factors capable to affect the development of the fish farming in the state of Mato Grosso do Sul. For so much, it was looked for to investigate as the institutions that compose the organizational and institutional atmospheres affect directly and they influence in the growth or direcionamento of the chain in the State. For accomplishment of this work it was used as technique of collection of data, the documental analysis, considering information collected directly in tied institutions the pisciculture as important supplier of data, moreover other public institutions. It can be concluded that the chain of the pisciculture in the state of Mato Grosso do Sul introduces an organized form, with great growth possibilities and enlargement, however, it exists the professionalization need and their agents' investments.
Complex hyperkähler structures defined by Donaldson-Thomas invariants
Creators: name: Bridgeland, Tom
name: Strachan, Ian A. B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: High Energy Physics - Theory (hep-th)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The notion of a Joyce structure was introduced in arXiv:1912.06504 to describe the geometric structure on the space of stability conditions of a CY3 category naturally encoded by the Donaldson-Thomas invariants. In this paper we show that a Joyce structure on a complex manifold defines a complex hyperkähler structure on the total space of its tangent bundle, and give a characterisation of the resulting hyperkähler metrics in geometric terms.
description: 27 pages
Dissipative iFIR filters for data-driven design
Creators: name: Wang, Zixing
name: Zhang, Yi
name: Forni, Fulvio
Publisher: name: Apollo - University of Cambridge Repository
Year: 2025
Subjects: Identification for control
Robust control
LMI's/BMI's/SOS's

description: We tackle the problem of providing closed-loop stability guarantees with a scalable data-driven design. We combine virtual reference feedback tuning with dissipativity constraints on the controller for closed-loop stability. The constraints are formulated as a set of linear inequalities in the frequency domain. This leads to a convex problem that is scalable with respect to the length of the data and the complexity of the controller. An extension of virtual reference feedback tuning to include disturbance dynamics is also discussed. The proposed data-driven control design is illustrated by a soft gripper impedance control example.
Applications of the duality method to generalizations of the Jordan canonical form
Creators: name: Holtz, Olga
Publisher: name: arXiv
Year: 2005
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 15A21, 15A33, 15A23

description: The Jordan normal form for a matrix over an arbitrary field and the canonical form for a pair of matrices under contragredient equivalence are derived using Ptak's duality method.
description: 6 pages
Cold and warm dust along a merging galaxy sequence
Creators: name: Xilouris, E. M.
name: Georgakakis, A. E.
name: Misiriotis, A.
name: Charmandaris, V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the cold and warm dust properties during galaxy interactions using a merging galaxy sample ordered into a chronological sequence from pre- to post-mergers. Our sample comprises a total of 29 merging systems selected to have far-infrared and sub-millimeter observations. The sub-millimeter data are mainly culled from the literature while for 5 galaxies (NGC 3597, NGC 3690, NGC 6090, NGC 6670 and NGC 7252) the sub-millimeter observations are presented here for the first time. We use the 100-to-850 micron flux density ratio, f_{100}/f_{850}, as a proxy to the mass fraction of the warm and the cold dust in these systems. We find evidence for an increase in f_{100}/f_{850} along the merging sequence from early to advanced mergers and interpret this trend as an increase of the warm relative to the cold dust mass. We argue that the two key parameters affecting the f_{100}/f_{850} flux ratio is the star-formation rate and the dust content of individual systems relative to the stars. Using a sophisticated model for the absorption and re-emission of the stellar UV radiation by dust we show that these parameters can indeed explain both the increase and the observed scatter in the f_{100}/f_{850} along the merging galaxy sequence. We also discuss our results under the hypothesis that elliptical galaxies are formed via disc galaxy mergers.
description: Accepted for publication in MNRAS
Rentabilidade e risco na estocagem do café pelos produtores na região de Viçosa - MG
Creators: name: Aredes, Alan Figueiredo De
name: Pereira, Matheus Wemerson Gomes
name: Santos, Vladimir Faria Dos
name: Santos, Maurinho Luiz Dos
name: Aredes, Alan Figueiredo De
name: Pereira, Matheus Wemerson Gomes
name: Santos, Vladimir Faria Dos
name: Santos, Maurinho Luiz Dos
Publisher: name: Unknown
Year: 2008
Subjects: Financial Economics

description: The objective of this article was to evaluate the yield and risk in the production and storage of the Arabian coffee. Cash flows are elaborated for coffee production in two productive systems, one with low productivity and other with high productivity. Twelve different scenarios are simulated, each one representing the returns and risks in the production and storage for every month of the year. The financial indicators Payback Period (PP), Net Present Value (VPL) and Internal Rate of Return (TIR) and the indicator Average Cost (CMe), suggest that high productivity is important to increase profitability and to decrease the activity risk, being the best periods to sale coffee, on the part of the producers, the months that precede the harvest, January, February and March.
Verlinde gravity effects on the orbits of the planets and the Moon in the Solar System
Creators: name: Yoon, Youngsub
name: Darriba, Luciano Ariel
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work, we address the effects of a phenomenon known as Verlinde gravity. Here we show that its effect over the planets and the Moon in our solar system is quite negligible. We find that the Verlinde gravity effects on the orbits of planets are at least 10 times smaller than the precision with which we can determine the Sun's mass, and the one on the orbit of the Moon is about 100 times smaller than the precision with which we can determine the Earth's mass. These results let us infer that statements in the literature that Verlinde gravity is ruled out by the observed motion of planets in our solar system aren't correct.
description: 16 pages, 1 figure, accepted for publication at Classical and Quantum Gravity
Uma análise da volatilidade condicional da inflação mineira no período pós-plano Real
Creators: name: Caetano, Sidney Martins
name: Correa, Wilson L. Rotatori
name: Caetano, Sidney Martins
name: Correa, Wilson L. Rotatori
Publisher: name: Unknown
Year: 2008
Subjects: subject: Political Economy
subject: Regional inflation
subject: Volatility
subject: ARCH models

description: In this paper we dedicate attention to the inflation dynamics in the metropolitan area of Belo Horizonte – Minas Gerais – through estimating an ARCH model considering its relative significance among those metropolitan areas that compose the national consumer price index (IPCA). Our results indicate that inflation in Minas Gerais presents an inertial component and that shocks hitting the Brazilian economy independent of arising from internal or from external sources only affect the conditional inflation volatility in Minas Gerais with a delay.
title: Организация учебно-исследовательской деятельности в начальной школе
Creators: name: ELS IPR BOOKS
Publisher: name: Северо-Осетинский государственный педагогический институт
Year: 2020

description: Рабочая тетрадь соответствует Федеральному государственному образовательному стандарту начального общего образования, содержит практические задания для самостоятельной работы обучающихся. Предназначена для формирования навыков организации научно-исследовательской деятельности у студентов – будущих учителей начальных классов.
From "best practice" to "best fit" a framework for designing and analyzing pluralistic agricultural advisory services worldwide
Creators: name: Birner, Regina
name: Davis, Kristin E.
name: Pender, John L.
name: Nkonya, Ephraim M.
name: Anandajayasekeram, Ponniah
name: Ekboir, Javier M.
name: Mbabu, Adiel N.
name: Spielman, David J.
name: Horna, J. Daniela
name: Benin, Samuel
name: Cohen, Marc J.
name: Birner, Regina
name: Davis, Kristin E.
name: Pender, John L.
name: Nkonya, Ephraim M.
name: Anandajayasekeram, Ponniah
name: Ekboir, Javier M.
name: Mbabu, Adiel N.
name: Spielman, David J.
name: Horna, J. Daniela
name: Benin, Samuel
name: Cohen, Marc J.
Publisher: name: Unknown
Year: 2006
Subjects: Agribusiness

description: The paper develops a framework for the design and analysis of pluralistic agricultural advisory services and reviews research methods from different disciplines that can be used when applying the framework. Agricultural advisory services are defined in the paper as the entire set of organizations that support and facilitate people engaged in agricultural production to solve problems and to obtain information, skills and technologies to improve their livelihoods and well-being… To classify pluralistic agricultural advisory services, the paper distinguishes between organizations from the public, the private and the third sector that can be involved in (a) providing and (b) financing of agricultural advisory services. The framework for analyzing pluralistic agricultural advisory services presented in the paper addresses the need for analytical approaches that help policy-makers to identify those reform options that best fit country-specific frame conditions. Thus, the paper supports a shift from a “one-size-fits-all” to a “best fit” approach in the reform of public services… Based on a review of the literature, the paper presents a variety of quantitative and qualitative methodological approaches derived from different disciplines that can be applied when using the framework in empirical research projects. The disciplines include agricultural and institutional economics, communication theory, adult education, and public administration and management. The paper intends to inform researchers as well as practitioners, policy-makers and development partners who are interested in supporting evidence-based reform of agricultural advisory services.
Studies of multiplicity in relativistic heavy-ion collisions
Creators: name: Back, B. B.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: In this talk I'll review the present status of charged particle multiplicity measurements from heavy-ion collisions. The characteristic features of multiplicity distributions obtained in Au+Au collisions will be discussed in terms of collision centrality and energy and compared to those of p+p collisions. Multiplicity measurements of d+Au collisions at 200 GeV nucleon-nucleon center-of-mass energy will also be discussed. The results will be compared to various theoretical models and simple scaling properties of the data will be identified.
description: "Focus on Multiplicity" Internationsl Workshop on Particle Multiplicity in Relativistic Heavy Ion Collisions, Bari, Italy, June 17-19, 2003, 16 pages, 15 figures
Has trade liberalization in South Africa affected men and women differently?
Creators: name: Thurlow, James
name: Thurlow, James
Publisher: name: Unknown
Year: 2006
Subjects: International Relations/Trade

description: Trade liberalization is a central part of South Africa’s post-Apartheid development strategy. However, despite considerable reforms, the country has failed to generate pro-poor growth, with both unemployment and inequality worsening over the last ten years. This has raised concern that trade liberalization may have worked against the country’s development objectives. This study uses a dynamic general equilibrium and microsimulation model to assess the effects of trade liberalization on growth, employment and poverty in South Africa. More specifically, it examines how men and women have been affected differently and whether liberalization has contributed to the faster rise in female unemployment and poverty. The results suggest that trade policies have not contributed to increased poverty and that trade-induced technological change has accelerated growth. However, liberalization has changed the sectoral structure of production and has exacerbated income inequality. While male and female workers have benefited from trade-induced growth, it is male-headed households who have benefited more from rising factor incomes. Trade reforms have however contributed to the observed decline in the gender wage gap, but this has been driven by rising employment amongst higher-skilled female workers. As such, the decline in poverty amongst female-headed households has remained small. While further liberalization may increase growth and reduce poverty, it is men and male-headed households who are more likely to benefit. These findings suggest that, while there is no trade-off between trade reform and poverty reduction, the country should not rely on further liberalization to generate pro-poor growth or address the prevailing inequalities between different population groups, such as men and women.
Low-coherence optical diffraction tomography using a ferroelectric liquid crystal spatial light modulator
Creators: name: Park, Chansuk
name: Lee, Kyeoreh
name: Baek, Yoonseok
name: Park, Yongkeun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Optical diffraction tomography (ODT) is a three-dimensional (3D) label-free imaging technique. The 3D refractive index distribution of a sample can be reconstructed from multiple two-dimensional optical field images via ODT. Herein, we introduce a temporally low-coherence ODT technique using a ferroelectric liquid crystal spatial light modulator (FLC SLM). The fast binary-phase modulation provided by the FLC SLM ensures a high spatiotemporal resolution with considerably reduced coherent noise. We demonstrate the performance of the proposed system using various samples, including colloidal microspheres and live epithelial cells.
Integrated Value of Influence: An Integrative Method for the Identification of the Most Influential Nodes within Networks
Creators: name: Salavaty, Abbas
name: Mirana Ramialison
name: Currie, Peter D.
Publisher: name: figshare
Year: 2020
Subjects: subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences
subject: 60114 Systems Biology
subject: FOS: Biological sciences

description: Summary
Biological systems are composed of highly complex networks, and decoding the functional significance of individual network components is critical for understanding healthy and diseased states. Several algorithms have been designed to identify the most influential regulatory points within a network. However, current methods do not address all the topological dimensions of a network or correct for inherent positional biases, which limits their applicability. To overcome this computational deficit, we undertook a statistical assessment of 200 real-world and simulated networks to decipher associations between centrality measures and developed an algorithm termed Integrated Value of Influence (IVI), which integrates the most important and commonly used network centrality measures in an unbiased way. When compared against 12 other contemporary influential node identification methods on ten different networks, the IVI algorithm outperformed all other assessed methods. Using this versatile method, network researchers can now identify the most influential network nodes.
Public investment to reserve Dutch disease: the case of Chad
Creators: name: Levy, Stephanie
name: Levy, Stephanie
Publisher: name: Unknown
Year: 2006
Subjects: Research and Development/Tech Change/Emerging Technologies

description: This paper studies the relevance of agricultural policies for avoiding Dutch Disease, which affects many less developed countries experiencing a resource boom. Using a computable general equilibrium model calibrated for Chad, we study the impact of using this country’s annual oil revenue for public investment, particularly in the development of road and irrigation infrastructure. Our model takes into account the integration of markets and migration processes. We find that improving water access would reduce Chad’s dependence on food aid and entail a substantial improvement in rural household welfare.
Bayesian Surprise in Indoor Environments
Creators: name: Feld, Sebastian
name: Sedlmeier, Andreas
name: Friedrich, Markus
name: Franz, Jan
name: Belzner, Lenz
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: This paper proposes a novel method to identify unexpected structures in 2D floor plans using the concept of Bayesian Surprise. Taking into account that a person's expectation is an important aspect of the perception of space, we exploit the theory of Bayesian Surprise to robustly model expectation and thus surprise in the context of building structures. We use Isovist Analysis, which is a popular space syntax technique, to turn qualitative object attributes into quantitative environmental information. Since isovists are location-specific patterns of visibility, a sequence of isovists describes the spatial perception during a movement along multiple points in space. We then use Bayesian Surprise in a feature space consisting of these isovist readings. To demonstrate the suitability of our approach, we take "snapshots" of an agent's local environment to provide a short list of images that characterize a traversed trajectory through a 2D indoor environment. Those fingerprints represent surprising regions of a tour, characterize the traversed map and enable indoor LBS to focus more on important regions. Given this idea, we propose to use "surprise" as a new dimension of context in indoor location-based services (LBS). Agents of LBS, such as mobile robots or non-player characters in computer games, may use the context surprise to focus more on important regions of a map for a better use or understanding of the floor plan.
description: 10 pages, 16 figures
title: Особенности подготовки учащихся к написанию сочинений по пейзажным картинам в условиях полилингвальной модели поликультурного образования
Creators: name: ELS IPR BOOKS
Publisher: name: Северо-Осетинский государственный педагогический институт
Year: 2020

description: В учебно-методическом пособии, подготовленном в рамках деятельности формирующихся научных школ СОГПИ «Функциональный подход в обучении языку» и «Полилингвальная модель поликультурного образования», рассматриваются особенности подготовки учащихся к написанию сочинений по пейзажным картинам в сравнительно-сопоставительном аспекте. Представленные материалы эффективны и в речевом развитии обучающихся.
Mirage Cosmology of U(1) Gauge Field on Unstable D3 Brane Universe
Creators: name: Psinas, Anastasios
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: An unstable $D3$-brane universe governed by the DBI action of the tachyon field minimally coupled to a U(1) gauge boson is examined. The cosmological evolution of this coupled system, is further analyzed, in terms of the expansion rate of the inflating brane, which is highly affected by the presence of the tachyonic and gauge field charges. We show, that the minimal coupling makes the effective brane density less divergent. However, for some sectors of the theory the tachyon is not able to regulate it in an efficient fashion. Also, a detailed analysis of the dependance of the effective brane density on the scale factor of the universe is performed, which leads to various cosmological models.
description: ReVTeX format 20 pages; v2 1 figure added, one additional paragraph with extra comments added, enlarged list of references, version to appear in JHEP
Assessing potential impact of avian influenza on poultry in West Africa: a spatial equilibrium model analysis
Creators: name: You, Liangzhi
name: Diao, Xinshen
name: You, Liangzhi
name: Diao, Xinshen
Publisher: name: Unknown
Year: 2006
Subjects: subject: Livestock Production/Industries
subject: avian influenza
subject: spatial equilibrium model simulation
subject: West Africa
subject: Nigeria

description: In this paper, the authors analyze the potential economic impacts of avian influenza (AI) in West Africa, taking Nigeria as an example. They find that, depending on the size of the affected areas, the direct impact of the spread of AI along the two major migratory bird flyways would be the loss of about 4 percent of national chicken production. However, the indirect effect-consumers’ reluctance to consume poultry if AI is detected, causing a decline in chicken prices-is generally larger than the direct effect. The study estimates that Nigerian chicken production would fall by 21 percent and chicken farmers would lose US$250 million of revenue if the worst-case scenario occurred. The negative impact of AI would be unevenly distributed in the country, and some states and districts would be seriously hurt. This study is based on a spatial equilibrium model that makes use of the most recent spatial distribution data sets for poultry and human populations in West Africa. The study shows that, while most of the attention has focused on preventing global influenza pandemic, preventive measures are also needed at the national, subnational, and local levels, because AI could potentially have a huge negative impact on the poultry industry and the livelihood of smallholder farmers in many regions in West Africa.
Rate Adaptation in Predictor Antenna Systems
Creators: name: Guo, Hao
name: Makki, Behrooz
name: Svensson, Tommy
Publisher: name: arXiv
Year: 2020
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Predictor antenna (PA) system is referred to as a system with two sets of antennas on the roof of a vehicle, where the PAs positioned in the front of the vehicle are used to predict the channel state observed by the receive antennas (RAs) that are aligned behind the PAs. This letter studies the performance of PA systems in the presence of the mismatching problem, i.e., when the channel observed by the PA is not exactly the same as the channel experienced by the RA. Particularly, we study the effect of spatial mismatching on the accuracy of channel state information estimation and rate adaption. We derive closed-form expressions for instantaneous throughput, outage probability, and the throughput-optimized rate adaptation. Also, we take the temporal evolution of the channel into account and evaluate the system performance in temporally-correlated conditions. The simulation and analytical results show that, while PA-assisted adaptive rate adaptation leads to considerable performance improvement, the throughput and the outage probability are remarkably affected by the spatial mismatch and temporal correlations.
description: arXiv admin note: text overlap with arXiv:2001.09264
On convergence of infinite matrix products
Creators: name: Holtz, Olga
Publisher: name: arXiv
Year: 2005
Subjects: subject: Rings and Algebras (math.RA)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 15A60, 65F10, 65N12, 65F35

description: A necessary and sufficient condition for the convergence of an infinite right product of matrices of the form | I B | A = | 0 C |, with (uniformly) contracting submatrices $C$, is proven.
description: 3 pages
The ground state entanglement in the $XXZ$ model
Creators: name: Gu, Shi-Jian
name: Tian, Guang-Shan
name: Lin, Hai-Qing
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In this paper, we investigate spin entanglement in the $XXZ$ model defined on a $d$-dimensional bipartite lattice. The concurrence, a measure of the entanglement between two spins, is analyzed. We prove rigorously that the ground state concurrence reaches maximum at the isotropic point. For dimensionality $d \ge 2$, the concurrence develops a cusp at the isotropic point and we attribute it to the existence of magnetic long-range order.
description: 5 pages, 2 figures
VeloRouter - Technology for Urban Transport Intermodal Sustainability
Creators: name: Ginters, Egils
Publisher: name: Zenodo
Year: 2016
Subjects: Agent-based simulation
Bicycle route planning
Easy Communication Environment (ECE)

description: The European Commission Decision C (2015) 6776 established the specific European Transport Specific Programme implementing Horizon 2020, Part 11 "Smart, green and integrated transport", which promotes using clean transport methods, one of which is cycling. In order to ensure the successful functioning of an integrated urban transport system cycling has to be one of its components, which naturally fits into the overall intermodal transport system. Due to limited funding it is important to understand which bike path network would be more efficient and ensure the greatest possible population transfer from other types of transport to bicycles.The sustainability of an urban environment depends on quality of planning and correct crafting, which is significantly influenced by the technologies used to rule out acceptance of voluntary and intuitive decisions. One of recommendable solutions is simulation. The multi agent-based (MAS/ABM) bicycle path network and exploitation simulator (VeloRouter) has dual applicability as it is adapted to both the needs of municipalities and cyclists.
Bosonization approach to the edge reconstruction of two dimentional electron systems in a quantum dot
Creators: name: Yanagi, Itaru
name: Kurihara, Susumu
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider the edge reconstruction of electrons in a two dimensional harmonic trap under a strong magnetic field. In this system the edge reconstruction occurs as a result of competition between electron-electron interaction and confining potential. To describe it, we develop a bosonization scheme for two dimensional electron systems. With this method we obtain the excitation spectrum and demonstrate that the edge reconstruction occurs when the value of the magnetic field reaches a critical value. We also show that the edge reconstruction depends on the number of electrons. Additionally, we calculate the third order terms of bosons in Hamiltonian and examine the effect of those terms with a perturbation theory.
description: 5pages, 6figures
title: Практикум по дисциплине «Основы финансовой грамотности»
Creators: name: ELS IPR BOOKS
Publisher: name: Северо-Осетинский государственный педагогический институт
Year: 2019

description: Практикум предназначен для помощи студентам педагогических вузов, обучающимся по направлениям подготовки 44.03.01 Педагогическое образование, 44.03.05 Педагогическое образование (с двумя профилями подготовки), изучающим курс «Основы финансовой грамотности», содержит практические задания и упражнения, способствующие усвоению пройденного материала.
Moving up and moving down: a new way of examining country growth dynamics
Creators: name: Rockmore, Marc
name: Zhang, Xiaobo
name: Rockmore, Marc
name: Zhang, Xiaobo
Publisher: name: Unknown
Year: 2006
Subjects: International Development

description: Do the countries which grow share the same features as those which decline? How can some countries achieve such long-term sustainable growth while others fail so badly? This paper builds on the emerging literature on growth asymmetries by examining movement across income categories in the World Development Reports over a significant period of time. The results confirm the existence of asymmetries and find that the factors which are correlated with movement upwards or downwards are markedly different. Evidence is presented which suggests that growth episodes share some common features while economic collapse may occur for a broader range of reasons.
title: Учебно-методическое пособие по дисциплине «Основы финансовой грамотности»
Creators: name: ELS IPR BOOKS
Publisher: name: Северо-Осетинский государственный педагогический институт
Year: 2019

description: Пособие содержит курс лекций по дисциплине «Основы финансовой грамотности», раскрывающие сущность финансовой грамотности, рекомендации к самостоятельной работе, глоссарий. Данная работа предназначена студентам педагогических вузов, обучающимся по направлениям подготовки 44.03.01 Педагогическое образование, 44.03.05 Педагогическое образование (с двумя профилями подготовки).
Trade liberalization under CAFTA: an analysis of the agreement with special reference to agriculture and smallholders in Central America
Creators: name: Morley, Samuel A.
name: Morley, Samuel A.
Publisher: name: Unknown
Year: 2006
Subjects: International Relations/Trade

description: This paper is a description and an analysis of trade liberalization under CAFTA. It shows that in the short run the impact of the agreement is likely to be small. Since the U.S. already grants tariff-free access under the CBI, trade liberalization in the CAFTA treaty appears to be asymmetric, with most of the tariff reductions being granted by the Central American countries. That is misleading for two reasons. First there really were some significant tariff barriers in the United States for agricultural commodities under the CBI. Many of these are removed under CAFTA. Second, the current favorable special treatment of the five Central American countries under the CBTPA and the CBI will expire in 2008 if CAFTA is not implemented. CAFTA makes permanent the tariff concessions of the CBI and the liberalized rules of origin of the CBTPA. The fact that the tariff reductions and TRQs granted by the Central American countries under CAFTA will not cause significant price reductions does not mean that domestic producers will be unaffected by the agreement. In the long run the level of protection of many important commodities such as rice, pork and poultry will be significantly lower. But the tariff reductions in these sectors are gradual. That gives farmers time to adjust and to become more competitive. What will be critical from a policy perspective is that this time is used wisely to increase productivity, switch to more profitable crops and take advantage of the new opportunities opened up by CAFTA.
Multifractal Behavior of the Korean Stock-market Index KOSPI
Creators: name: Lee, Jae Woo
name: Lee, Kyuoung Eun
name: Rikvold, Per Arne
Publisher: name: arXiv
Year: 2004
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Other Condensed Matter (cond-mat.other)
subject: Physics and Society (physics.soc-ph)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: We investigate multifractality in the Korean stock-market index KOSPI. The generalized $q$th order height-height correlation function shows multiscaling properties. There are two scaling regimes with a crossover time around $t_c =40$ min. We consider the original data sets and the modified data sets obtained by removing the daily jumps, which occur due to the difference between the closing index and the opening index. To clarify the origin of the multifractality, we also smooth the data through convolution with a Gaussian function. After convolution we observe that the multifractality disappears in the short-time scaling regime $tt_c$, regardless of whether or not the daily jumps are removed. We suggest that multifractality in the short-time scaling regime is caused by the local fluctuations of the stock index. But the multifractality in the long-time scaling regime appears to be due to the intrinsic trading properties, such as herding behavior, information outside the market, the long memory of the volatility, and the nonlinear dynamics of the stock market.
description: 12 pages, 4 figures. Physica A, in press
Trajectory annotation using sequences of spatial perception
Creators: name: Feld, Sebastian
name: Illium, Steffen
name: Sedlmeier, Andreas
name: Belzner, Lenz
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: In the near future, more and more machines will perform tasks in the vicinity of human spaces or support them directly in their spatially bound activities. In order to simplify the verbal communication and the interaction between robotic units and/or humans, reliable and robust systems w.r.t. noise and processing results are needed. This work builds a foundation to address this task. By using a continuous representation of spatial perception in interiors learned from trajectory data, our approach clusters movement in dependency to its spatial context. We propose an unsupervised learning approach based on a neural autoencoding that learns semantically meaningful continuous encodings of spatio-temporal trajectory data. This learned encoding can be used to form prototypical representations. We present promising results that clear the path for future applications.
description: 10 pages, 17 figures
On the spectroastrometric separation of binary point-source fluxes
Creators: name: Porter, John M.
name: Oudmaijer, Rene D.
name: Baines, Debbie
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Spectroastrometry is a technique which has the potential to resolve flux distributions on scales of milliarcseconds. In this study, we examine the application of spectroastrometry to binary point sources which are spatially unresolved due to the observational point spread function convolution. The technique uses measurements with sub-pixel accuracy of the position centroid of high signal-to-noise long-slit spectrum observations. With the objects in the binary contributing fractionally more or less at different wavelengths (particularly across spectral lines), the variation of the position centroid with wavelength provides some information on the spatial distribution of the flux. We examine the width of the flux distribution in the spatial direction, and present its relation to the ratio of the fluxes of the two components of the binary. Measurement of three observables (total flux, position centroid and flux distribution width) at each wavelength allows a unique separation of the total flux into its component parts even though the angular separation of the binary is smaller than the observations' point-spread function. This is because we have three relevant observables for three unknowns (the two fluxes, and the angular separation of the binary), which therefore generates a closed problem. This is a wholly different technique than conventional deconvolution methods, which produce information on angular sizes of the sampling scale. Spectroastrometry can produce information on smaller scales than conventional deconvolution, and is successful in separating fluxes in a binary object with a separation of less than one pixel. We present an analysis of the errors involved in making binary object spectroastrometric measurements and the separation method, and highlight necessary observing methodology.
description: 11 pages, 8 figures, accepted for publication in Astronomy and Astrophysics