Essays about: "non-stationarity"

Showing result 6 - 10 of 14 essays containing the word non-stationarity.

  1. 6. The First Time Assurance on Sustainability Reports and Risk Premiums

    University essay from Umeå universitet/Företagsekonomi

    Author : Nawras Akkam; Bih Norberter Andusa Ambele; [2016]
    Keywords : Sustainability; Assurance; Cost of Equity; Reporting; Risk; Environment; Sweden.;

    Abstract : The economic utility of sustainability has been a recent domain under scrutiny by several academicians. More specifically, researchers have investigated the positive effects of sustainability reporting on firms from different angles. READ MORE

  3. 7. Updating Rainfall Intensity-Duration-Frequency Curves in Sweden Accounting for the Observed Increase in Rainfall Extremes

    University essay from Uppsala universitet/Luft-, vatten- och landskapslära

    Author : Sofia Eckersten; [2016]
    Keywords : IDF curves; climate change; non-stationarity; stationary; Sweden; return level; re- turn period; NEVA; GEV; extreme value analysis;

    Abstract : Increased extreme precipitation has been documented in many regions around the world, in- cluding central and northern Europe. Global warming increases average temperature, which in turn enhances atmospheric water holding capacity. These changes are believed to increase the frequency and/or intensity of extreme precipitation events. READ MORE

  4. 8. Exploring the spatial relationship between NDVI and rainfall in the semi-arid Sahel with geographically weighted regression

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Stefanos Georganos; [2016]
    Keywords : geomatics; rainfall; Sahel; scale dependency; non-stationarity; physical geography and ecosystem analysis; geographically weighted regression; Earth and Environmental Sciences;

    Abstract : The Normalized Vegetation Difference Index (NDVI) is frequently used as a surrogate for vegetation properties and is often correlated with climatic variables such as rainfall. However, studies have shown that conventional regression models used to study the spatial relationship between NDVI and rainfall are often plagued by non-stationarity and are scale dependent. READ MORE

  5. 9. The Integration of Swedish and global grain markets : a price transmission analysis of wheat

    University essay from SLU/Dept. of Economics

    Author : Julia Haking; [2014]
    Keywords : market integration; cointegration; price transmission; VECM;

    Abstract : Increased trade and eased policy restrictions have brought markets closer together. Prices at different locations are much likely to affect each other to a certain extent. Since the adaption of Common Agricultural Policy in 1995 the Swedish wheat market has been exposed to the world market and Swedish farmers are facing new challenges. READ MORE

  6. 10. Demodulation Techniques in Gearbox Diagnostics

    University essay from Signaler och System

    Author : Andreas Meisingseth; [2012]
    Keywords : Gearbox diagnostics; demodulation;

    Abstract : This thesis covers the scope of one out of many ways to diagnose gearboxes, demodulating the excited vibrational signals to enhance fault detection and identification. The topic is not only of academic interest since the achievements that can be made by successful machine condition monitoring in the industry. READ MORE