2,659 research outputs found

    Replication Data for: Shades of Darkness or Light? A Systematic Review of Geographic Bias in Impact Evaluations of Electricity Access

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    Replication package for Hamburger, David, Joel Jaeger, Patrick Bayer, Ryan Kennedy, Joonseok Yang, and Johannes Urpelainen. 2019: "Shades of Darkness or Light? A Systematic Review of Geographic Bias in Impact Evaluations of Electricity Access

    Replication Data for: Shades of Darkness or Light? A Systematic Review of Geographic Bias in Impact Evaluations of Electricity Access

    No full text
    Replication package for Hamburger, David, Joel Jaeger, Patrick Bayer, Ryan Kennedy, Joonseok Yang, and Johannes Urpelainen. 2019: "Shades of Darkness or Light? A Systematic Review of Geographic Bias in Impact Evaluations of Electricity Access

    Group portrait / Bayer, Curtis F.; Amidon, David C., Jr. / Linderman Library; Bayer Galleria

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    Curtis F. Bayer and David C. Amidon shaking hands. Description on the back

    IMAGE COMPRESSION BEFORE BAYER DEMOSAICING

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    This disclosure presents compression of a raw bayer image using standard compression hardware that preserves more data from the raw bayer image such as by only interpolating the green channel prior to compression. As a result, high quality images may be produced with little to no artifacts in post-processing

    Influence of the external DEM on PS-InSAR processing and results on Northern Appennine slopes.

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    We present an InSAR analysis of slow moving landslide in the Northern Appennines, Italy, and assess the dependencies on the choice of DEM. In recent years, advanced processing techniques for synthetic aperture radar interferometry (InSAR) have been applied to measure slope movements. The persistent scatterers (PS-InSAR) approach is probably the most widely used and some codes are now available in the public domain. The Stanford method of Persistent Scatterers (StamPS) has been successfully used to analyze landslide areas. One problematic step in the processing chain is the choice of an external DEM that is used to model and remove the topographic phase in a series of interferograms in order to obtain the phase contribution caused by surface deformation. The choice is not trivial, because the PS InSAR results differ significantly in terms of PS identification, positioning, and the resulting deformation signal. We use four different DEMs to process a set of 18 ASAR (Envisat) scenes over a mountain area (~350 km2) of the Northern Appennines of Italy, using StamPS. Slow-moving landslides control the evolution of the landscape and cover approximately 30% of the territory. Our focus in this presentation is to evaluate the influence of DEM resolution and accuracy by comparing PS-InSAR results. On an areal basis, we perform a statistical analysis of displacement time-series to make the comparison. We also consider two case studies to illustrate the differences in terms of PS identification, number and estimated displacements. It is clearly shown that DEM accuracy positively influences the number of PS, while line-of-sight rates differ from case to case and can result in deformation signals that are difficult to interpret. We also take advantage of statistical tools to analyze the obtained time-series datasets for the whole study area. Results indicate differences in the style and amount of displacement that can be related to the accuracy of the employed DEM

    Supplementary data for manuscript:"High intraspecific diversity of Restorer-of-fertility-like genes in barley"

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    <b>External Organisations</b><br/>Leibniz Institute of Plant Genetics and Crop Plant Research<b>Associated Persons</b><br/>Ruonan Zhou (Creator)Title: High intraspecific diversity of Restorer-of-fertility-like genes in barley 
 Authors: Melonek, Joanna; Zhou, Ruonan; Bayer, Philipp; Edwards, David; Stein, Nils; Small, Ian 
 Corresponding Author: Ian Small [email protected] and Nils Stein [email protected]

    Ibn-i Kemal's View in his Epistle "al-Usloobu'l-Hakeem" in Relevant Verses and Criticism Against al-Sakkaki

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    In this article, investigation of Ibn Kemal about rhetorical art, “al-usloobu’l-hakeem”, in his epistle “Risâletun fî Beyâni’l-Uslûbi’l-Hakîm” has been handled. General subjects of the work are the definition of aforesaid art which al-Sakkaki is the eponym of, examples of it and especially its reflections in the Koran. The author who has attracted the attention to that there is not a complete consistency between the examples and the definition presented by al-Sakkaki, firstly tried to make reformation on the existing definition in order to build the subject on a more convenient base. Kemal Pashazade who has discussed the examples of al-Sakkaki from both of the two perspectives, has contributed to the understanding of the related art by presenting new examples. In addition, practical examples of the author about how to do text and context synthesizing for a better understanding of verses of the Koran, have valuable data in terms of Tafsir.Makalede, İbn-i Kemâl’in “Risâletun fî Beyâni’l-Uslûbi’l-Hakîm” adlı risalesinde “el-üslûbu’lhakîm” belâğî sanatını incelemesi ele alınmıştır. es-Sekkâkî’nin isim babası olduğu söz konusu sanatın tanımı, örnekleri ve özellikle Kur’ân’daki yansımaları eserin genel konularıdır. es-Sekkâkî’nin tanımıyla sunduğu bazı örnekler arasında tam bir uygunluk olmadığına dikkatleri çeken müellif, konuyu daha doğru bir zemine oturtabilmek için öncelikle mevcut tanımı ıslah etmeye gayret etmiştir. es-Sekkâkî’nin örneklerini her iki bakış açısıyla tartışan Kemâl Paşazâde, yeni örnekler sunarak ilgili sanatın anlaşılmasına önemli katkılarda bulunmuştur. Ayrıca müellifin, âyetlerin daha doğru anlaşılması için metin ve bağlam sentezlemesinin nasıl yapılacağına dair uygulama örnekleri tefsir açısından kıymetli veriler taşımaktadır

    Ioannis Bayeri Rhainani I.C. Uranometria [cartographic material] : omnium asterismorum continens schemata, nova methodo delineata, aereis laminis expressa.

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    Fully engraved t.p. ; head pieces, tail pieces and initials.; Engravings by Alexander Mair. Cf. colophon.; Names in Latin and in Greek.; The main work is preceded by three laudatory poems about the author, one in Greek, two in Latin.; "Corrigenda": leaf b2, verso.; Signatures: a-b, A-3C.; Imprint from colophon.; D. Warner. The sky explored. p. 18.; Dict. Scien. Biogr. v. 1, p. 530.; Also available in an electronic version via the Internet at: http://nla.gov.au/nla.map-ra307; Library's copy includes preliminary manuscript index page, a double-page plate of Ursus Minor loosely inserted, a double-page dedication plate "To the University of Oxford" with a bifolium of accompanying text and six pages of manuscript astronomical notes by the mathematician John Collins (1625-1683), also loosely inserted.; Library's copy includes bookplate on verso cover and has signature 2R after 2V. This first edition of Johann Bayer's atlas includes 48 maps of individual Ptolemaic constellations; the 49th displays twelve newly observed southern constellations derived from expeditions into the southern hemisphere, including that of Vespucci, Corsali, Keyser and Houtman. The atlas is the first printed to show the southern hemisphere constellations. Maps 50 and 51 are celestial planispheres, entitled "Synopsis coeli superioris borea" and "Synopsis coeli inferioris austrina" respectively. Discussion of the various names of constellations, and a list of stars including Ptolemaic number, Bayer's letter, position within constellation figure, magnitude and astrological association is printed on the back of each map. Bayer's atlas includes many innovations such as his revolutionary classification system and the use of a grid for accurately determining the position of each star to fractions of a degree. The basis for this atlas was the catalog of 1,005 stars recorded by Tycho Brahe, although Bayer revised some of the magnitudes and added an additional 1,000 stars.Uranometria.Bayeri UranometriaVranometria

    Aritmètica en l'anell dels quaternions de Hurwitz

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    Treballs Finals de Grau de Matemàtiques, Facultat de Matemàtiques, Universitat de Barcelona, Any: 2016, Director: Pilar Bayer i IsantThis work begins with a brief study of quaternion algebras in order to introduce the division algebra of Hamilton’s quaternions. Then we proceed to describe the ring of Hurwitz integers, named after his author, and to study the main properties of it. Finally, using all the previous theory, we prove some results to stress the importance of this ring
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