Sökning: "Uno Wennergren"
Visar resultat 1 - 5 av 15 avhandlingar innehållade orden Uno Wennergren.
1. Networks and epidemics - impact of network structure on disease transmission
Sammanfattning : The spread of infectious diseases, between animals as well as between humans, is a topic often in focus. Outbreaks of diseases like for example foot-and-mouth disease, avian influenza, and swine influenza have in the last decades led to an increasing interest in modelling of infectious diseases since such models can be used to elucidate disease transmission and to evaluate the impact of different control strategies. LÄS MER
2. Network analysis and optimization of animal transports
Sammanfattning : This thesis is about animal transports and their effect on animal welfare. Transports are needed in today’s system of livestock farming. Long transports are stressful for animals and infectious diseases can spread via animal transports. LÄS MER
3. Closing nutrient cycles
Sammanfattning : Adequate and balanced crop nutrition – with nitrogen (N), phosphorus (P), and potassium (K) – is vital for sustainable crop production. Inadequate and imbalanced crop nutrition contributes to the crop yield gaps – a difference in actual and potential crop yield. LÄS MER
4. Bifurcations and Exchange of Stability with Density Dependence in a Coinfection Model and an Age-structured Population Model
Sammanfattning : In nature many pathogens and in particular strains of pathogens with negative effects on species coexists. This is for simplicity often ignored in many epidemiological models. It is however still of interest to get a deeper understanding how this coexistence affects the dynamics of the disease. LÄS MER
5. Cattle Shipments and Disease Spread Modeling
Sammanfattning : Spread of transboundary animal diseases can have large impact on animal welfare, public health and economy. The effects of this include economic losses in terms of lower milk production, lower weight gain and culling due to welfare concerns. LÄS MER
