Essays about: "genetic adaptation"

Showing result 6 - 10 of 31 essays containing the words genetic adaptation.

1. 6. Exploring Swedish Oat (Avena sativa) Genetic History - from AD 1440 to today

   University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

   Author : Amanda Raud Westberg; [2021]
   Keywords : ;

   Abstract : Oats (Avena sativa) have been one of the most important cereals in Swedish crop history, completely dominating domestic cereal production in the 19th and early 20th centuries. During this time, oats were mainly used as horse feed and since then, production has decreased with decreased use of horses. READ MORE

3. 7. Self-adaptive random walk with pesudo-gradients for genetic evolution of an artificial neural network

   University essay from Lunds universitet/Beräkningsbiologi och biologisk fysik - Genomgår omorganisation

   Author : Robin Emanuelsson; [2020]
   Keywords : Physics and Astronomy;

   Abstract : To optimize the weights in an artificial neural network most methods rely gradients, which are not always obtainable or desirable. Evolutionary algorithms are instead based on Darwinian evolution where no derivative is needed. READ MORE

4. 8. WSN Routing Schedule Based on Energy-aware Adaptation

   University essay from Mittuniversitetet/Institutionen för informationssystem och –teknologi

   Author : Tingqing Peng; [2020]
   Keywords : Multi-objective Optimization Problem; Routing schedule; KSP; Wireless sensor network;

   Abstract : In view of the problem of uneven load distribution and energy consumption among nodes in a multi-hop wireless sensor network, this research constructs the routing schedule problem as a MOP (Multi-objective Optimization Problem), and proposed an energy-aware routing optimization scheme RDSEGA based on multi-objective optimization. In this scheme, in order to avoid the searching space explosion problem caused by the increase of nodes, KSP Yen's algorithm was applied to prune the searching space, and the candidate paths selected after pruning are recoded based on priority. READ MORE

5. 9. Genetic diversity and hardiness in Scots pine from Scandinavia to Russia

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

   Author : Jenny Olsson; [2019]
   Keywords : Pinus sylvestris; recolonization history; genetic diversity; cold hardiness; clinal variation;

   Abstract : The postglacial recolonization of northern Europe supposedly originated from Western Europe and the Russian Plain, however, recent molecular and macrofossil-based investigations suggest that the history may be more complex than previously thought. This study aims to investigate the genetic diversity and population structure of Scots pine from Scandinavia to Russia to re-evaluate its recolonization history, and to examine whether the pattern of spatial genetic diversity has any adaptive significance. READ MORE

6. 10. Growth and timber quality evaluation of 33 European beech (Fagus sylvatica L.) provenances from a site in Southern Sweden

   University essay from SLU/Southern Swedish Forest Research Centre

   Author : John Bergkvist; [2019]
   Keywords : trial; climate change; adaptation; growth; survival; Sweden;

   Abstract : This study aims to shed more light on the differences in growth and timber quality characteristics between European beech provenances at its northern distribution margin. Data was collected from a provenance trial established in 1998 in southern Sweden to determine the growth and development of 33 provenances of European beech (Fagus sylvatica L. READ MORE