Sökning: "Trade-off theory"

Visar resultat 1 - 5 av 88 avhandlingar innehållade orden Trade-off theory.

  1. 1. Avian thermoregulation across age and seasons

    Författare :Fredrik Andreasson; Evolutionär ekologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ambient temperature; body temperature; Cyanistes caeruleus; energy expenditure; hypothermia; life-history theory; metabolic rate; Parus major; thermoregulation; trade-off; winter ecology;

    Sammanfattning : Animals constantly need to relate to prevailing environmental conditions and regulate their body temperature accordingly. Body temperature regulation in birds and mammals is inherently linked to energy expenditure and, thus, thermoregulation is a physiological mechanism that could trade-off with other costly processes, with potential long-term fitness consequences. LÄS MER

  3. 2. Evolution of Plants : a mathematical perspective

    Författare :Magnus Lindh; Åke Brännström; Jacob Johansson; Mats G Larson; Lennart Persson; Claus Rüffler; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Evolution; plants; mathematics; optimization; optimal control; adaptive dynamics; flowering; seasons; tree crown; drought; taproot; trade-off; strategy; trait; ESS; NPP; LAI; Red Queen; Mathematics; matematik;

    Sammanfattning : The Earth harbors around 300 000 plant species. The rich and complex environment provided by plants is considered a key factor for the extraordinary diversity of the terrestrial fauna by, for example, providing food and shelter. LÄS MER

  4. 3. In Search of Strategic Consistency - A Model for Evaluation of how Stategies Support Objectives

    Författare :Mikael Weimarck; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; decision-making; strategizing; process; management; consistency; strategic management; trade-off; consonance; objective; model; strategy;

    Sammanfattning : Developments during recent years have brought a divergence between strategic management theory and practice. While practitioners perceive an undiminished need for identification and implementation of appropriate strategic directions of companies, theorists have stressed the limitations that apply to rational strategic analysis and decision-making. LÄS MER

  5. 4. Gonad and ejaculate allocation in alternative reproductive tactics of salmon and trout with reference to sperm competition

    Författare :Tomislav Vladić; Michael Taborsky; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; alternative reproductive tactics; sperm competition; brown trout; Atlantic salmon; ATP; ejaculate expenditure; motility; sperm morphology; trade-off; loaded raffle; zoologi; Zoology;

    Sammanfattning : Atlantic salmon, Salmo salar L., and brown trout, Salmo trutta L., exhibit alternative male maturation phenotypes, anadromous and precociously mature parr, which commonly endure in sperm competition at the spawning grounds. LÄS MER

  7. 5. Optimisation of Clinical Trials using Bayesian Decision Theory

    Författare :Sebastian Jobjörnsson; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; decision theory; drug regulation; ; Bayesian statistics; subgroup analysis; clinical trials; health economics; multiple testing; decision theory;

    Sammanfattning : A decision maker confronted with the task of designing a clinical trial has to consider a multitude of aspects. Large trials lead to more evidence,which in turn makes it less likely that harmful decisions are taken when deciding on future treatments for patients. LÄS MER