Sökning: "temporal variation"

Visar resultat 1 - 5 av 123 uppsatser innehållade orden temporal variation.

1. 1. FROM SPACE TO THE SUBSURFACE. Examining Relations Between Vegetation Indices and Local Groundwater Storage.

   Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaper

   Författare :Gustav Antonsson; [2023-11-06]
   Nyckelord :;

   Sammanfattning : This study aimed to examine the relationship between vegetation indices, NDVI and NDWI, and groundwater levels in the county of Kalmar, utilizing correlation and regression analysis. Further, by examining related geospatial features the study aimed to interpret the statistical outcomes to identify significant temporal and spatial patterns. LÄS MER

3. 2. Gun violence and school achievement: Evidence from Sweden

   Master-uppsats, Göteborgs universitet/Graduate School

   Författare :Ellinor Stensson; [2023-06-29]
   Nyckelord :Gun violence; Educational outcomes; Sweden;

   Sammanfattning : This paper examines how educational outcomes in grade six are affected by gun violence that occurs in proximity to primary schools in Sweden. With geo-referenced data on gun violence over the period between 2018 and 2022, the thesis geographically matches spatial data on 1,811 shootings with national test results in mathematics and background data on 2,304 Swedish primary schools. LÄS MER

4. 3. Predicting user churn using temporal information : Early detection of churning users with machine learning using log-level data from a MedTech application

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Love Marcus; [2023]
   Nyckelord :User churn; Customer attrition; Artificial neural networks; Log-level analysis; Random forests; Decision trees; Användarbortfall; Kundbortfall; Artificiella neurala nätverk; logganalys; Slumpskogar; Beslutsträd;

   Sammanfattning : User retention is a critical aspect of any business or service. Churn is the continuous loss of active users. A low churn rate enables companies to focus more resources on providing better services in contrast to recruiting new users. LÄS MER

5. 4. Can spawning site temperature regimes cause spawning time divergence in sympatric whitefish ecotypes? : Comparison of two hypotheses

   Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

   Författare :Joni Riihimaa; [2023]
   Nyckelord :Coregonus lavaretus; Hatching time; Spawning habitat; Spawning time; Temperature dependence;

   Sammanfattning : The spawning time differs between sympatric ecotypes of lake-dwelling whitefish (Coregonus lavaretus) and this temporal divergence can be linked to the type of spawning habitat used (i.e., streams, littoral or profundal). LÄS MER

7. 5. A bear-y strong comeback: Investigating temporal genomic consequences of a recent demographic bottleneck in the Scandinavian brown bear

   Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

   Författare :Amanda Lindahl; [2023]
   Nyckelord :Evolutionary biology; ancient DNA; bottleneck; whole-genome sequencing;

   Sammanfattning : The Scandinavian brown bear went through a severe bottleneck due to human actions in the early 1900’s that reduced the population to low numbers. After protective measures were taken, the population recovered and today it consists of around 3000 individuals. LÄS MER