Sökning: "production disturbance"

Visar resultat 16 - 20 av 78 avhandlingar innehållade orden production disturbance.

1. 16. Pollinators, Enemies, Drought, and the Evolution of Reproductive Traits in Primula farinosa

   Författare :Per Toräng; Jon Ågren; Johan Ehrlén; Rebecca Irwin; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Ecology; Alternative reproductive strategies; climate change; facilitation; floral display; flowering phenology; frequency-dependent selection; genetic diversity; life-history strategies; local adaptation; pollination; predation; Primula farinosa; reproductive effort; soil disturbance; stochastic growth rate; Ekologi;

   Sammanfattning : In this thesis, I combined comparative and experimental approaches to examine selection on reproductive traits and population differentiation in the insect-pollinated, self-incompatible, perennial herb Primula farinosa. More specifically, I (1) determined whether the effects of floral display and interactions with pollinators and seed predators, and plant reproductive success were frequency-dependent and affected by surrounding vegetation context, (2) examined the consequences of intermittent drought years on population dynamics using numerical simulations based on demographic data collected over seven years, (3) analyzed among-population differentiation in flowering phenology and reproductive allocation, and its relationship to soil-depth at the site of origin. LÄS MER

3. 17. Towards increasing operator wellbeing and performance in complex assembly

   Författare :Sandra Mattsson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Complex systems; assembly; operator wellbeing; performance; smart wearables;

   Sammanfattning : This thesis provides insights on complex assembly issues and presents pragmatic models, methods, measurable parameters and prototypes that can be used to support operators in complex assembly. Assembly systems are complex partly because of a high degree of product variety and the strategy of having mass-customised products. LÄS MER

4. 18. Computer Visualization in Participatory and Cognitive Engineering

   Författare :Peter Bengtsson; Ergonomi och aerosolteknologi; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Utvecklingspsykologi; Development psychology; Dynamic Decision Making; Operator Process Interfaces; Action Research; Learning; Ergonomics; Engineering; Participatory; Virtual Reality; Animation; Computer; Visualization; Systems engineering; computer technology; Data- och systemvetenskap; Architecture; interior design; Arkitektur; inredningsarkitektur; Engineering Psychology;

   Sammanfattning : This thesis tells the initiation story of a computer visualization methodology and a participatory engineering methodology. The two methodologies are tightly coupled and for the purpose of this thesis, as a unit, named Computer Visualization in Par-ticipatory Engineering (VIPE). LÄS MER

5. 19. Managing the risk for antagonistic threats against the transport network

   Författare :Daniel Ekwall; Högskolan i Borås; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; supply chain management; supply chain security; risk management; transport networks; crime prevention; Kvalitetsdriven logistik;

   Sammanfattning : The World Trade Centre terror attack in 2001 changed the world and with it the conditions for logistics worldwide. The aftermath of the attack brought needed attention to the vulnerability of modern supply chains. This thesis addresses the antagonistic threats that exploit the vulnerability in a supply chain. LÄS MER

7. 20. Antagonistic Gateways in the Transport Network in a Supply Chain Perspective

   Författare :Daniel Ekwall; Högskolan i Borås; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; transport networks; supply chain management; risk management; crime prevention; cargo crimes;

   Sammanfattning : The World Trade Centre terror attack in 2001 changed the world and with it the conditions for logistics world-wide. The aftermath to the attack brought needed attention to the vulnerability of modern supply chains. LÄS MER