Skip to main navigation Skip to main content
info(at)avldigital.remove-this.de
Deutsch English
Last searches

Results for *

Displaying results 1 to 10 of 10.

  1. Eyes in the sky, boots on the ground
    assessing satellite- and ground-based approaches to crop yield measurement and analysis in Uganda
    Author: Lobell, David B.; Azzari, George; Burke, Marshall; Gourlay, Sydney; Jin, Zhenong; Kilic, Talip; Murray, Siobhan
    Published: March 2018
    Publisher:  World Bank Group, Development Economics, Development Data Group, Washington, D.C.

    Crop yields in smallholder systems are traditionally assessed using farmer-reported information in surveys, occasionally by crop cuts for a sub-section of a farmer's plot, and rarely using full-plot harvests. Accuracy and cost vary dramatically... more

    Access:
    Verlag (Deutschlandweit zugänglich)

    Location:
    Evangelische Hochschule Berlin, Bibliothek
    Signature:
    eBook
    Inter-library loan:
    No inter-library loan

    Location:
    Max-Planck-Institut für Bildungsforschung, Bibliothek und wissenschaftliche Information
    Inter-library loan:
    No inter-library loan

    Location:
    Staatsbibliothek zu Berlin - Preußischer Kulturbesitz, Haus Potsdamer Straße
    Inter-library loan:
    No inter-library loan

    Location:
    Staats- und Universitätsbibliothek Bremen
    Inter-library loan:
    No inter-library loan

    Location:
    Universitätsbibliothek Clausthal
    Inter-library loan:
    No inter-library loan

    Location:
    Hochschule für Technik und Wirtschaft Dresden, Bibliothek
    Signature:
    World Bank Nationallizenz
    Inter-library loan:
    No inter-library loan

    Location:
    Hochschule Emden/Leer, Hochschulbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Bibliothek der Pädagogischen Hochschule Freiburg/Breisgau
    Inter-library loan:
    No inter-library loan

    Location:
    Universitätsbibliothek Freiburg
    Inter-library loan:
    No inter-library loan

    Location:
    Niedersächsische Staats- und Universitätsbibliothek Göttingen
    Inter-library loan:
    No inter-library loan

    Location:
    Deutsche Akademie der Naturforscher Leopoldina, Bibliothek
    Signature:
    ebook (Nationallizenz)
    Inter-library loan:
    No inter-library loan

    Location:
    Leibniz-Institut für Wirtschaftsforschung Halle, Bibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Max-Planck-Institut für ethnologische Forschung, Bibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Universitäts- und Landesbibliothek Sachsen-Anhalt / Zentrale
    Signature:
    ebook
    Inter-library loan:
    No inter-library loan

    Location:
    Helmut-Schmidt-Universität, Universität der Bundeswehr Hamburg, Universitätsbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Technische Universität Hamburg, Universitätsbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Bibliothek der Hochschule Hannover
    Inter-library loan:
    No inter-library loan
    Location:
    Bibliothek im Kurt-Schwitters-Forum
    Inter-library loan:
    No inter-library loan

    Location:
    Leibniz-Fachhochschule Hannover, Bibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Technische Informationsbibliothek (TIB) / Leibniz-Informationszentrum Technik und Naturwissenschaften und Universitätsbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Duale Hochschule Baden-Württemberg Heidenheim, Bibliothek
    Signature:
    e-Book Nationallizenz
    Inter-library loan:
    No inter-library loan

    Location:
    Universitätsbibliothek Ilmenau
    Signature:
    WIR 2016
    Inter-library loan:
    No inter-library loan

    Location:
    Thüringer Universitäts- und Landesbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Karlsruher Institut für Technologie, KIT-Bibliothek
    Inter-library loan:
    No loan of volumes, only paper copies will be sent
    Location:
    Karlsruher Institut für Technologie, KIT-Bibliothek
    Inter-library loan:
    No loan of volumes, only paper copies will be sent
    Location:
    Karlsruher Institut für Technologie, KIT-Bibliothek
    Inter-library loan:
    No loan of volumes, only paper copies will be sent

    Location:
    Fachhochschule Kiel, Zentralbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Universitätsbibliothek Kiel, Zentralbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
    Signature:
    VS 2 (8374)
    Inter-library loan:
    No inter-library loan

    Location:
    HTWG Hochschule Konstanz Technik, Wirtschaft und Gestaltung, Bibliothek
    Signature:
    eBook WorldBank
    Inter-library loan:
    No loan of volumes, only paper copies will be sent

    Location:
    Hochschule Anhalt , Hochschulbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Universitätsbibliothek Leipzig
    Inter-library loan:
    No inter-library loan

    Location:
    Leuphana Universität Lüneburg, Medien- und Informationszentrum, Universitätsbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Otto-von-Guericke-Universität, Universitätsbibliothek
    Signature:
    ebook worldbank
    Inter-library loan:
    No inter-library loan

    Location:
    Duale Hochschule Baden-Württemberg Mannheim, Bibliothek
    Signature:
    eBook World Bank
    Inter-library loan:
    No inter-library loan

    Location:
    Hochschule für Wirtschaft und Umwelt Nürtingen-Geislingen, Bibliothek Nürtingen
    Signature:
    eBook World Bank
    Inter-library loan:
    No loan of volumes, only paper copies will be sent

    Location:
    Hochschule Offenburg, University of Applied Sciences, Bibliothek Campus Offenburg
    Signature:
    E-Book Worldbank
    Inter-library loan:
    No loan of volumes, only paper copies will be sent

    Location:
    Universitätsbibliothek Osnabrück
    Inter-library loan:
    No inter-library loan

    Location:
    Hochschulbibliothek Pforzheim, Bereichsbibliothek Technik und Wirtschaft
    Signature:
    e-Book World Bank E-Library Archive
    Inter-library loan:
    No inter-library loan

    Location:
    Universität Potsdam, Universitätsbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Duale Hochschule Baden-Württemberg Ravensburg, Bibliothek
    Signature:
    E-Book WorldBank
    Inter-library loan:
    No inter-library loan

    Location:
    Hochschulbibliothek Reutlingen (Lernzentrum)
    Signature:
    eBook
    Inter-library loan:
    No loan of volumes, only paper copies will be sent

    Location:
    Universitätsbibliothek Rostock
    Inter-library loan:
    No inter-library loan

    Location:
    Saarländische Universitäts- und Landesbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Hochschule Albstadt-Sigmaringen, Bibliothek Sigmaringen
    Inter-library loan:
    No inter-library loan

    Location:
    Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim
    Inter-library loan:
    No loan of volumes, only paper copies will be sent

    Location:
    Universitätsbibliothek der Eberhard Karls Universität
    Inter-library loan:
    No inter-library loan

    Location:
    Duale Hochschule Baden-Württemberg Villingen-Schwenningen, Bibliothek
    Signature:
    World Bank eLibrary
    Inter-library loan:
    No inter-library loan

    Location:
    UB Weimar
    Inter-library loan:
    No inter-library loan

    Location:
    Ostfalia Hochschule für angewandte Wissenschaften, Bibliothek
    Inter-library loan:
    No inter-library loan

     

    Crop yields in smallholder systems are traditionally assessed using farmer-reported information in surveys, occasionally by crop cuts for a sub-section of a farmer's plot, and rarely using full-plot harvests. Accuracy and cost vary dramatically across methods. In parallel, satellite data is improving in terms of spatial, temporal, and spectral resolution needed to discern performance on smallholder plots. This study uses data from a survey experiment in Uganda, and evaluates the accuracy of Sentinel-2 imagery-based, remotely-sensed plot-level maize yields with respect to ground-based measures relying on farmer self-reporting, sub-plot crop cutting (CC), and full-plot crop cutting (FP). Remotely-sensed yields include two versions calibrated to FP and CC yields (calibrated), and an alternative based on crop model simulations, using no ground data (uncalibrated). On the ground, self-reported yields explained less than 1 percent of FP (and CC) yield variability, and while the average difference between CC and FP yields was not significant, CC yields captured one-quarter of FP yield variability. With satellite data, both calibrated and uncalibrated yields captured FP yield variability on pure stand plots similarly well, and both captured half of FP yield variability on pure stand plots above 0.10 hectare. The uncalibrated yields were consistently 1 ton per hectare higher than FP or CC yields, and the satellite-based yields were less well correlated with the ground-based measures on intercropped plots compared with pure stand ones. Importantly, regressions using CC, FP and remotely-sensed yields as dependent variables all produced very similar coefficients for yield response to production factors

     
    Export to reference management software   RIS file
      BibTeX file
    Content information
    Volltext (Deutschlandweit zugänglich)
    Source: Staatsbibliothek zu Berlin
    Language: English
    Media type: Book
    Format: Online
    Other identifier:
    Series: Policy research working paper ; 8374
    World Bank E-Library Archive
    Subjects: Mais; Ernteertrag; Satellitenkommunikation; Kleinbauern; Uganda
    Scope: 1 Online-Ressource (circa 29 Seiten), Illustrationen
  2. How much will the Belt and Road Initiative reduce trade costs?
    Author: Soyres, François de; Mulabdic, Alen; Murray, Siobhan; Rocha, Nadia; Ruta, Michele
    Published: October 2018
    Publisher:  World Bank Group, Macroeconomics, Trade and Investment Global Practice, Middle East and North Africa Region, Development Research Group, Washington, D.C.

    This paper studies the impact of transport infrastructure projects of the Belt and Road Initiative on shipment times and trade costs. Based on a new data on completed and planned Belt and Road transport projects, Geographic Information System... more

    Access:
    Verlag (Deutschlandweit zugänglich)

    Location:
    Evangelische Hochschule Berlin, Bibliothek
    Signature:
    eBook
    Inter-library loan:
    No inter-library loan

    Location:
    Max-Planck-Institut für Bildungsforschung, Bibliothek und wissenschaftliche Information
    Inter-library loan:
    No inter-library loan

    Location:
    Staatsbibliothek zu Berlin - Preußischer Kulturbesitz, Haus Potsdamer Straße
    Inter-library loan:
    No inter-library loan

    Location:
    Staats- und Universitätsbibliothek Bremen
    Inter-library loan:
    No inter-library loan

    Location:
    Universitätsbibliothek Clausthal
    Inter-library loan:
    No inter-library loan

    Location:
    Hochschule für Technik und Wirtschaft Dresden, Bibliothek
    Signature:
    World Bank Nationallizenz
    Inter-library loan:
    No inter-library loan

    Location:
    Hochschule Emden/Leer, Hochschulbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Bibliothek der Pädagogischen Hochschule Freiburg/Breisgau
    Inter-library loan:
    No inter-library loan

    Location:
    Universitätsbibliothek Freiburg
    Inter-library loan:
    No inter-library loan

    Location:
    Niedersächsische Staats- und Universitätsbibliothek Göttingen
    Inter-library loan:
    No inter-library loan

    Location:
    Deutsche Akademie der Naturforscher Leopoldina, Bibliothek
    Signature:
    ebook (Nationallizenz)
    Inter-library loan:
    No inter-library loan

    Location:
    Leibniz-Institut für Wirtschaftsforschung Halle, Bibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Max-Planck-Institut für ethnologische Forschung, Bibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Universitäts- und Landesbibliothek Sachsen-Anhalt / Zentrale
    Signature:
    ebook
    Inter-library loan:
    No inter-library loan

    Location:
    Helmut-Schmidt-Universität, Universität der Bundeswehr Hamburg, Universitätsbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Technische Universität Hamburg, Universitätsbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Bibliothek der Hochschule Hannover
    Inter-library loan:
    No inter-library loan
    Location:
    Bibliothek im Kurt-Schwitters-Forum
    Inter-library loan:
    No inter-library loan

    Location:
    Leibniz-Fachhochschule Hannover, Bibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Technische Informationsbibliothek (TIB) / Leibniz-Informationszentrum Technik und Naturwissenschaften und Universitätsbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Duale Hochschule Baden-Württemberg Heidenheim, Bibliothek
    Signature:
    e-Book Nationallizenz
    Inter-library loan:
    No inter-library loan

    Location:
    Universitätsbibliothek Ilmenau
    Signature:
    WIR 2016
    Inter-library loan:
    No inter-library loan

    Location:
    Thüringer Universitäts- und Landesbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Karlsruher Institut für Technologie, KIT-Bibliothek
    Inter-library loan:
    No loan of volumes, only paper copies will be sent
    Location:
    Karlsruher Institut für Technologie, KIT-Bibliothek
    Inter-library loan:
    No loan of volumes, only paper copies will be sent
    Location:
    Karlsruher Institut für Technologie, KIT-Bibliothek
    Inter-library loan:
    No loan of volumes, only paper copies will be sent

    Location:
    Fachhochschule Kiel, Zentralbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Universitätsbibliothek Kiel, Zentralbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
    Signature:
    VS 2 (8614)
    Inter-library loan:
    No inter-library loan

    Location:
    HTWG Hochschule Konstanz Technik, Wirtschaft und Gestaltung, Bibliothek
    Signature:
    eBook WorldBank
    Inter-library loan:
    No loan of volumes, only paper copies will be sent

    Location:
    Hochschule Anhalt , Hochschulbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Universitätsbibliothek Leipzig
    Inter-library loan:
    No inter-library loan

    Location:
    Leuphana Universität Lüneburg, Medien- und Informationszentrum, Universitätsbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Otto-von-Guericke-Universität, Universitätsbibliothek
    Signature:
    ebook worldbank
    Inter-library loan:
    No inter-library loan

    Location:
    Duale Hochschule Baden-Württemberg Mannheim, Bibliothek
    Signature:
    eBook World Bank
    Inter-library loan:
    No inter-library loan

    Location:
    Hochschule für Wirtschaft und Umwelt Nürtingen-Geislingen, Bibliothek Nürtingen
    Signature:
    eBook World Bank
    Inter-library loan:
    No loan of volumes, only paper copies will be sent

    Location:
    Hochschule Offenburg, University of Applied Sciences, Bibliothek Campus Offenburg
    Signature:
    E-Book Worldbank
    Inter-library loan:
    No loan of volumes, only paper copies will be sent

    Location:
    Universitätsbibliothek Osnabrück
    Inter-library loan:
    No inter-library loan

    Location:
    Hochschulbibliothek Pforzheim, Bereichsbibliothek Technik und Wirtschaft
    Signature:
    e-Book World Bank E-Library Archive
    Inter-library loan:
    No inter-library loan

    Location:
    Universität Potsdam, Universitätsbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Duale Hochschule Baden-Württemberg Ravensburg, Bibliothek
    Signature:
    E-Book WorldBank
    Inter-library loan:
    No inter-library loan

    Location:
    Hochschulbibliothek Reutlingen (Lernzentrum)
    Signature:
    eBook
    Inter-library loan:
    No loan of volumes, only paper copies will be sent

    Location:
    Universitätsbibliothek Rostock
    Inter-library loan:
    No inter-library loan

    Location:
    Saarländische Universitäts- und Landesbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Hochschule Albstadt-Sigmaringen, Bibliothek Sigmaringen
    Inter-library loan:
    No inter-library loan

    Location:
    Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim
    Inter-library loan:
    No loan of volumes, only paper copies will be sent

    Location:
    Universitätsbibliothek der Eberhard Karls Universität
    Inter-library loan:
    No inter-library loan

    Location:
    Duale Hochschule Baden-Württemberg Villingen-Schwenningen, Bibliothek
    Signature:
    World Bank eLibrary
    Inter-library loan:
    No inter-library loan

    Location:
    UB Weimar
    Inter-library loan:
    No inter-library loan

    Location:
    Ostfalia Hochschule für angewandte Wissenschaften, Bibliothek
    Inter-library loan:
    No inter-library loan

     

    This paper studies the impact of transport infrastructure projects of the Belt and Road Initiative on shipment times and trade costs. Based on a new data on completed and planned Belt and Road transport projects, Geographic Information System analysis is used to estimate shipment times before and after the Belt and Road Initiative. Two sets of data are computed to address different research questions: a global database based on an analysis of 1,000 cities in 191 countries and 47 sectors and a regional database that focuses on more granular information (1,818 cities) for Belt and Road economies only. The paper uses sectoral estimates of "value of time" to transform changes in shipment times into changes in ad valorem trade costs at the country-sector level. The findings show that the Belt and Road Initiative will significantly reduce shipment times and trade costs. For the world, the average reduction in shipment time will range between 1.2 and 2.5 percent, leading to reduction of aggregate trade costs between 1.1 and 2.2 percent. For Belt and Road economies, the change in shipment times and trade costs will range between 1.7 and 3.2 percent and 1.5 and 2.8 percent, respectively. Belt and Road economies located along the corridors where projects are built experience the largest gains. Shipment times along these corridors decline by up to 11.9 percent and trade costs by up to 10.2 percent. The paper also shows that these effects are magnified by policy reforms that reduce border delays and improve corridor management

     
    Export to reference management software   RIS file
      BibTeX file
    Content information
    Volltext (Deutschlandweit zugänglich)
    Source: Staatsbibliothek zu Berlin
    Language: English
    Media type: Book
    Format: Online
    Other identifier:
    Series: Policy research working paper ; 8614
    World Bank E-Library Archive
    Scope: 1 Online-Ressource (circa 43 Seiten), Illustrationen
  3. How much will the Belt and Road Initiative reduce trade costs?
    Author: Soyres, François de; Mulabdic, Alen; Murray, Siobhan; Rocha, Nadia; Ruta, Michele
    Published: 2020
    Publisher:  Board of Governors of the Federal Reserve System, [Washington, DC]

    Access:
    Resolving-System (kostenfrei)
    Verlag (kostenfrei)
    Verlag (kostenfrei)

    Location:
    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
    Signature:
    VS 201
    Inter-library loan:
    No inter-library loan
    Export to reference management software   RIS file
      BibTeX file
    Source: Union catalogues
    Language: English
    Media type: Book
    Format: Online
    Other identifier:
    Series: International finance discussion papers ; number 1274 (February 2020)
    Scope: 1 Online-Ressource (circa 23 Seiten), Illustrationen
  4. Second-stage sampling for conflict areas
    methods and implications
    Author: Himelein, Kristen; Eckman, Stephanie; Murray, Siobhan; Bauer, Johannes
    Published: March 2016
    Publisher:  World Bank Group, Poverty and Equity Global Practice Group, Washington, D.C.

    The collection of survey data from war zones or other unstable security situations is vulnerable to error because conflict often limits the implementation options. Although there are elevated risks throughout the process, this paper focuses... more

    Location:
    Staatsbibliothek zu Berlin - Preußischer Kulturbesitz, Haus Unter den Linden
    Inter-library loan:
    Unlimited inter-library loan, copies and loan

     

    The collection of survey data from war zones or other unstable security situations is vulnerable to error because conflict often limits the implementation options. Although there are elevated risks throughout the process, this paper focuses specifically on challenges to frame construction and sample selection. The paper uses simulations based on data from the Mogadishu High Frequency Survey Pilot to examine the implications of the choice of second-stage selection methodology on bias and variance. Among the other findings, the simulations show the bias introduced by a random walk design leads to the underestimation of the poverty headcount by more than 10 percent. The paper also discusses the experience of the authors in the time required and technical complexity of the associated back-office preparation work and weight calculations for each method. Finally, as the simulations assume perfect implementation of the design, the paper also discusses practicality, including the ease of implementation and options for remote verification, and outlines areas for future research and pilot testing

     
    Export to reference management software   RIS file
      BibTeX file
    Content information
    Volltext (kostenfrei)
    Source: Staatsbibliothek zu Berlin
    Language: English
    Media type: Book
    Format: Online
    Other identifier:
    hdl: 10986/24158
    Series: Policy research working paper ; 7617
    Subjects: Politische Instabilität; Datenerhebung; Statistischer Fehler; Random Walk; Mogadischu; Somalia; ADMINISTRATIVE RECORDS; ADMINISTRATIVE RECORDS; AGE; ALGORITHMS; BACK OFFICE; BACK-OFFICE; BEST PRACTICE; BUSINESS; CALCULATION; CASE; CASES; CELL PHONES; CLASSIFICATION; CLUSTERING; COMPUTER; CONFIDENCE INTERVALS; CONFIDENCE INTERVALS; COUNTING; DATA COLLECTION; DATA COLLECTION; DESCRIPTION; DOCUMENT; EFFECTS; ENUMERATION; EQUIPMENT; ERRORS; ESTIMATES; ESTIMATING; HUMAN ERROR; IMAGE; IMAGES; IMPLEMENTATION PLANS; IMPLEMENTATIONS; INFORMATION; INTERVIEWS; MEASUREMENT; MEASURES; METHODOLOGIES; METHODOLOGY; METHODS; MISSING VALUES; MISSING VALUES; MODELING; MONITORING; NAVIGATION; NETWORK; OBJECT; OPEN ACCESS; PERFORMANCE; PHONES; PILOT TESTING; PRECISION; PREDICTION; PROBABILITIES; PROBABILITY; PROBABILITY SAMPLES; PROTOCOL; PROTOCOLS; RANDOM SAMPLING; RANDOM SAMPLING; RANDOM WALK; RANDOM WALK; RESEARCH; RESEARCH WORKING PAPERS; RESEARCHERS; RESULT; RESULTS; RISK; ROUTING; SAMPLE DESIGN; SAMPLE DESIGN; SAMPLE SIZE; SAMPLE SIZE; SAMPLES; SAMPLING; SAMPLING DESIGNS; SATELLITE; SCENARIOS; SEARCH; SECURITY; SIMULATION; SIMULATIONS; SIZE; SMART PHONES; SOFTWARE; SPACE; STANDARD; STANDARD DEVIATION; STANDARD DEVIATION; STANDARDS; STATISTICS; SUPERVISION; SURVEY DATA; SURVEY DATA; SURVEY METHODOLOGY; SURVEY METHODOLOGY; SURVEYS; TARGET; TECHNICAL TRAINING; TECHNICAL TRAINING; TECHNIQUES; TECHNOLOGY; TESTING; THEORY; VARIABLES; VERIFICATION; WEB; WEIGHT; WEIGHTING; WWW
    Scope: 1 Online-Ressource (circa 33 Seiten), Illustrationen
  5. Eyes in the sky, boots on the ground
    assessing satellite- and ground-based approaches to crop yield measurement and analysis in Uganda
    Author: Lobell, David B.; Azzari, George; Burke, Marshall; Gourlay, Sydney; Jin, Zhenong; Kilic, Talip; Murray, Siobhan
    Published: March 2018
    Publisher:  World Bank Group, Development Economics, Development Data Group, Washington, D.C.

    Crop yields in smallholder systems are traditionally assessed using farmer-reported information in surveys, occasionally by crop cuts for a sub-section of a farmer's plot, and rarely using full-plot harvests. Accuracy and cost vary dramatically... more

    Access:
    Verlag (Deutschlandweit zugänglich)

    Location:
    Max-Planck-Institut für Bildungsforschung, Bibliothek und wissenschaftliche Information
    Inter-library loan:
    Unlimited inter-library loan, copies and loan

    Location:
    Staatsbibliothek zu Berlin - Preußischer Kulturbesitz, Haus Unter den Linden
    Inter-library loan:
    Unlimited inter-library loan, copies and loan

    Location:
    Universität Potsdam, Universitätsbibliothek
    Inter-library loan:
    Unlimited inter-library loan, copies and loan

     

    Crop yields in smallholder systems are traditionally assessed using farmer-reported information in surveys, occasionally by crop cuts for a sub-section of a farmer's plot, and rarely using full-plot harvests. Accuracy and cost vary dramatically across methods. In parallel, satellite data is improving in terms of spatial, temporal, and spectral resolution needed to discern performance on smallholder plots. This study uses data from a survey experiment in Uganda, and evaluates the accuracy of Sentinel-2 imagery-based, remotely-sensed plot-level maize yields with respect to ground-based measures relying on farmer self-reporting, sub-plot crop cutting (CC), and full-plot crop cutting (FP). Remotely-sensed yields include two versions calibrated to FP and CC yields (calibrated), and an alternative based on crop model simulations, using no ground data (uncalibrated). On the ground, self-reported yields explained less than 1 percent of FP (and CC) yield variability, and while the average difference between CC and FP yields was not significant, CC yields captured one-quarter of FP yield variability. With satellite data, both calibrated and uncalibrated yields captured FP yield variability on pure stand plots similarly well, and both captured half of FP yield variability on pure stand plots above 0.10 hectare. The uncalibrated yields were consistently 1 ton per hectare higher than FP or CC yields, and the satellite-based yields were less well correlated with the ground-based measures on intercropped plots compared with pure stand ones. Importantly, regressions using CC, FP and remotely-sensed yields as dependent variables all produced very similar coefficients for yield response to production factors

     
    Export to reference management software   RIS file
      BibTeX file
    Content information
    Volltext (Deutschlandweit zugänglich)
    Source: Staatsbibliothek zu Berlin
    Language: English
    Media type: Book
    Format: Online
    Other identifier:
    Series: Policy research working paper ; 8374
    World Bank E-Library Archive
    Subjects: Mais; Ernteertrag; Satellitenkommunikation; Kleinbauern; Uganda
    Scope: 1 Online-Ressource (circa 29 Seiten), Illustrationen
  6. How much will the Belt and Road Initiative reduce trade costs?
    Author: Soyres, François de; Mulabdic, Alen; Murray, Siobhan; Rocha, Nadia; Ruta, Michele
    Published: October 2018
    Publisher:  World Bank Group, Macroeconomics, Trade and Investment Global Practice, Middle East and North Africa Region, Development Research Group, Washington, D.C.

    This paper studies the impact of transport infrastructure projects of the Belt and Road Initiative on shipment times and trade costs. Based on a new data on completed and planned Belt and Road transport projects, Geographic Information System... more

    Access:
    Verlag (Deutschlandweit zugänglich)

    Location:
    Max-Planck-Institut für Bildungsforschung, Bibliothek und wissenschaftliche Information
    Inter-library loan:
    Unlimited inter-library loan, copies and loan

    Location:
    Staatsbibliothek zu Berlin - Preußischer Kulturbesitz, Haus Unter den Linden
    Inter-library loan:
    Unlimited inter-library loan, copies and loan

    Location:
    Universität Potsdam, Universitätsbibliothek
    Inter-library loan:
    Unlimited inter-library loan, copies and loan

     

    This paper studies the impact of transport infrastructure projects of the Belt and Road Initiative on shipment times and trade costs. Based on a new data on completed and planned Belt and Road transport projects, Geographic Information System analysis is used to estimate shipment times before and after the Belt and Road Initiative. Two sets of data are computed to address different research questions: a global database based on an analysis of 1,000 cities in 191 countries and 47 sectors and a regional database that focuses on more granular information (1,818 cities) for Belt and Road economies only. The paper uses sectoral estimates of "value of time" to transform changes in shipment times into changes in ad valorem trade costs at the country-sector level. The findings show that the Belt and Road Initiative will significantly reduce shipment times and trade costs. For the world, the average reduction in shipment time will range between 1.2 and 2.5 percent, leading to reduction of aggregate trade costs between 1.1 and 2.2 percent. For Belt and Road economies, the change in shipment times and trade costs will range between 1.7 and 3.2 percent and 1.5 and 2.8 percent, respectively. Belt and Road economies located along the corridors where projects are built experience the largest gains. Shipment times along these corridors decline by up to 11.9 percent and trade costs by up to 10.2 percent. The paper also shows that these effects are magnified by policy reforms that reduce border delays and improve corridor management

     
    Export to reference management software   RIS file
      BibTeX file
    Content information
    Volltext (Deutschlandweit zugänglich)
    Source: Staatsbibliothek zu Berlin
    Language: English
    Media type: Book
    Format: Online
    Other identifier:
    Series: Policy research working paper ; 8614
    World Bank E-Library Archive
    Scope: 1 Online-Ressource (circa 43 Seiten), Illustrationen
  7. Trade and infrastructure integration in Africa
    Author: Fontagné, Lionel; Lebrand, Mathilde; Murray, Siobhan; Ruta, Michele; Santoni, Gianluca
    Published: June 2023
    Publisher:  CEPII, Paris

    Access:
    Verlag (kostenfrei)
    Verlag (kostenfrei)

    Location:
    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
    Signature:
    VSP 1686
    Inter-library loan:
    No inter-library loan
    Export to reference management software   RIS file
      BibTeX file
    Source: Union catalogues
    Language: English
    Media type: Book
    Format: Online
    Series: CEPII working paper ; no. 2023-14 (June 2023)
    Subjects: Infrastructure; Preferential Trade Agreements; Structural Gravity; General Equilibrium
    Scope: 1 Online-Ressource (circa 52 Seiten), Illustrationen
  8. The use of random geographic cluster sampling to survey pastoralists
    Author: Himelein, Kristen; Eckman, Stephanie; Murray, Siobhan
    Published: 2013
    Publisher:  World Bank, Development Research Group, Poverty and Inequality & Computational Tools Teams, Washington, DC

    Location:
    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
    Signature:
    VS 2 (6589)
    Inter-library loan:
    No inter-library loan
    Export to reference management software   RIS file
      BibTeX file
    Content information
    Source: Union catalogues
    Language: English
    Media type: Book
    Format: Online
    Other identifier:
    Series: Policy research working paper ; 6589
    Subjects: Tierhaltung; Nutztiere; Agrarstatistik; Geoinformationssystem; Clusteranalyse; Äthiopien
    Scope: Online-Ressource (23 S.), Ill., graph. Darst., Kt.
  9. Cheaper, faster, and more than good enough
    is GPS the new gold standard in land area measurement?
    Author: Carletto, Calogero; Gourlay, Sydney; Murray, Siobhan; Zezza, Alberto
    Published: July 2016
    Publisher:  World Bank Group, Development Economics, Development Data Group, Washington, D.C.

    Location:
    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
    Signature:
    VS 2 (7759)
    Inter-library loan:
    No inter-library loan
    Export to reference management software   RIS file
      BibTeX file
    Content information
    Source: Union catalogues
    Language: English
    Media type: Book
    Format: Online
    Other identifier:
    Series: Policy research working paper ; 7759
    Subjects: Kartographie; Navigationssystem; Äthiopien; Nigeria; Tansania
    Scope: 1 Online-Ressource (circa 50 Seiten), Illustrationen
  10. Second-stage sampling for conflict areas
    methods and implications
    Author: Himelein, Kristen; Eckman, Stephanie; Murray, Siobhan; Bauer, Johannes
    Published: March 2016
    Publisher:  World Bank Group, Poverty and Equity Global Practice Group, Washington, D.C.

    The collection of survey data from war zones or other unstable security situations is vulnerable to error because conflict often limits the implementation options. Although there are elevated risks throughout the process, this paper focuses... more

    Access:
    Resolving-System (kostenfrei)

    Location:
    Orient-Institut Beirut
    Signature:
    Online
    Inter-library loan:
    No inter-library loan

    Location:
    Staatsbibliothek zu Berlin - Preußischer Kulturbesitz, Haus Potsdamer Straße
    Inter-library loan:
    No inter-library loan

    Location:
    Universitätsbibliothek Clausthal
    Inter-library loan:
    No inter-library loan

    Location:
    Niedersächsische Staats- und Universitätsbibliothek Göttingen
    Inter-library loan:
    No inter-library loan

    Location:
    Helmut-Schmidt-Universität, Universität der Bundeswehr Hamburg, Universitätsbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    Fachhochschule Kiel, Zentralbibliothek
    Inter-library loan:
    No inter-library loan

    Location:
    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
    Signature:
    VS 2 (7617)
    Inter-library loan:
    No inter-library loan

    Location:
    Leuphana Universität Lüneburg, Medien- und Informationszentrum, Universitätsbibliothek
    Inter-library loan:
    No inter-library loan

     

    The collection of survey data from war zones or other unstable security situations is vulnerable to error because conflict often limits the implementation options. Although there are elevated risks throughout the process, this paper focuses specifically on challenges to frame construction and sample selection. The paper uses simulations based on data from the Mogadishu High Frequency Survey Pilot to examine the implications of the choice of second-stage selection methodology on bias and variance. Among the other findings, the simulations show the bias introduced by a random walk design leads to the underestimation of the poverty headcount by more than 10 percent. The paper also discusses the experience of the authors in the time required and technical complexity of the associated back-office preparation work and weight calculations for each method. Finally, as the simulations assume perfect implementation of the design, the paper also discusses practicality, including the ease of implementation and options for remote verification, and outlines areas for future research and pilot testing

     
    Export to reference management software   RIS file
      BibTeX file
    Content information
    Volltext (kostenfrei)
    Source: Staatsbibliothek zu Berlin
    Language: English
    Media type: Book
    Format: Online
    Other identifier:
    hdl: 10986/24158
    Series: Policy research working paper ; 7617
    Subjects: Politische Instabilität; Datenerhebung; Statistischer Fehler; Random Walk; Mogadischu; Somalia; PILOT TESTING; PRECISION; PREDICTION; PROBABILITY SAMPLES; PROTOCOL; PROTOCOLS; RANDOM SAMPLING; RANDOM WALK; RANDOM WALK; RESEARCHERS; RESULT; RESULTS; RISK; ROUTING; SAMPLE DESIGN; SAMPLE SIZE; SAMPLE SIZE; SAMPLES; SAMPLING; SAMPLING DESIGNS; SECURITY; SIMULATION; SIZE; SMART PHONES; SOFTWARE; STANDARD; STANDARD DEVIATION; STATISTICS; SURVEY DATA; SURVEY METHODOLOGY; SURVEYS; TARGET; TECHNOLOGY; THEORY; WEIGHT; WEIGHTING; WWW; PROBABILITIES; PROBABILITY; RANDOM SAMPLING; RESEARCH; RESEARCH WORKING PAPERS; SAMPLE DESIGN; SATELLITE; SCENARIOS; SEARCH; SIMULATIONS; SPACE; STANDARD DEVIATION; STANDARDS; SUPERVISION; SURVEY DATA; SURVEY METHODOLOGY; TECHNICAL TRAINING; TECHNICAL TRAINING; TECHNIQUES; TESTING; VARIABLES; VERIFICATION; WEB; AGE; ALGORITHMS; BACK-OFFICE; BEST PRACTICE; BUSINESS; CASE; CELL PHONES; CONFIDENCE INTERVALS; COUNTING; DATA COLLECTION; DESCRIPTION; ESTIMATES; ESTIMATING; IMAGES; INTERVIEWS; MEASUREMENT; METHODOLOGY; MISSING VALUES; NAVIGATION; NETWORK; OBJECT; PERFORMANCE; PHONES; ADMINISTRATIVE RECORDS; ADMINISTRATIVE RECORDS; BACK OFFICE; CALCULATION; CASES; CLASSIFICATION; CLUSTERING; COMPUTER; CONFIDENCE INTERVALS; DATA COLLECTION; DOCUMENT; EFFECTS; ENUMERATION; EQUIPMENT; ERRORS; HUMAN ERROR; IMAGE; IMPLEMENTATION PLANS; IMPLEMENTATIONS; INFORMATION; MEASURES; METHODOLOGIES; METHODS; MISSING VALUES; MODELING; MONITORING; OPEN ACCESS
    Scope: 1 Online-Ressource (circa 33 Seiten), Illustrationen