Essays about: "temporal variation"

Showing result 16 - 20 of 117 essays containing the words temporal variation.

  1. 16. Modeling the Head Effect in Hydropower River Systems using MILP and BLP Approaches

    University essay from Linköpings universitet/Tillämpad matematik; Linköpings universitet/Tekniska fakulteten

    Author : Lina Larsson; Mikaela Lindberg; [2022]
    Keywords : Hydropower optimization; Hydropower scheduling; The head effect; Bilinear programming; Mixed-integer linear programming;

    Abstract : With a fast-growing electricity demand and a larger proportion of intermittent energy sources follows a greater need for flexible and balancing sources of electricity, such as hydropower. Planning of hydropower production is considered to be a difficult problem to solve due to several nonlinearities, combinatorial properties and the fact that it is a large scale system with spatial-temporal coupling. READ MORE

  3. 17. Methane tree stem flux over the course of the spring flood : Spatial and temporal effects in a boreal riparian zone

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Elin Berg; [2022]
    Keywords : Methane; tree stem flux; boreal forest; riparian zones; spring flood;

    Abstract : Methane (CH4) tree stem-atmosphere flux is viewed as a new frontier in the global carbon cycle and may be of great importance. The effect on flux from different tree species, forest ecosystems and seasons is still uncertain. READ MORE

  4. 18. Evaluation of Crop Water Use and Rice Yield Using Remote Sensing and AquaCrop Model for Three Irrigation Schemes in Sri Lanka

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Veronika Widengren; [2022]
    Keywords : WaPOR; remote sensing; evapotranspiration; crop water productivity; irrigation scheme; AquaCrop; Malwathu Oya; Sri Lanka; paddy rice; humid tropical climate; WaPOR; fjärranalys; evapotranspiration; vattenproduktivitet; bevattningssystem; AquaCrop; Malwathu Oya; Sri Lanka; ris; fuktigt tropiskt klimat;

    Abstract : With a changing climate and an increased competition over water resources for agricultural irrigation, the need to improve crop water productivity using time and cost-efficient methodologies have become critically important. The Malwathu Oya river basin in Sri Lanka is struggling with water scarcity, which threatens food security and the income of farmers. READ MORE

  5. 19. Dynamic streams in a pre-alpine catchment

    University essay from Göteborgs universitet/Institutionen för geovetenskaper

    Author : Andreas Sølberg; [2021-07-12]
    Keywords : Temporary streams; Streamflow; Stream mapping; Pre-Alpine catchment; Stream dynamics; Topographic wetness index; Upslope accumulated area;

    Abstract : This thesis aims to investigate the factors controlling the dynamics of temporary streams, i.e., streams that do not flow throughout the year. Temporary stream hydrology is a relative unexplored scientific field. READ MORE

  6. 20. Compensating for ultrasound frequency attenuation in tissue when determining tissue effective particle size

    University essay from Lunds universitet/Avdelningen för Biomedicinsk teknik

    Author : Karolina Sandell; [2021]
    Keywords : Technology and Engineering;

    Abstract : Giant cell arteritis is a disease the affects the arteries, for example the temporal artery. When affecting the temporal artery, it can cause serious consequences such as blindness and stroke. The existing methods for diagnosing the disease are invasive, time consuming and costly. READ MORE