Search for dissertations about: "assumption"

Showing result 1 - 5 of 1162 swedish dissertations containing the word assumption.

  2. 1. Essays on the Assumption of Proportional Hazards in Cox Regression

    Author : Inger Persson; Kenneth Carling; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Informatics; computer and systems science; Proportional hazards; Cox regression; Proportionality assumption; Informatik; data- och systemvetenskap; Informatics; computer and systems science; Informatik; data- och systemvetenskap; statistik; Statistics;

    Abstract : This thesis consists of four papers about the assumption of proportional hazards for the Cox model in survival analysis. The first paper compares the hazard ratio estimated from the Cox model to an exact calculation of the geometric average of the hazard ratio when the underlying assumption of proportional hazards is false, i.e. READ MORE

  4. 2. Metaethical Relativism: Against the Single Analysis Assumption

    Author : Ragnar Francén; Göteborgs universitet; []
    Keywords : HUMANIORA; HUMANITIES; moral relativism; metaethical relativism; speaker relativism; appraiser;

    Abstract : This dissertation investigates the plausibility of metaethical relativism, or more specifically, what I call “moral truth-value relativism”: the idea that the truth of a moral statement or belief depends on who utters or has it, or who assesses it. According to the most prevalent variants of this view in philosophical literature – “standard relativism” – the truth-values are relative to people’s moralities, often understood as some subset of their affective or desire- like attitudes. READ MORE

  5. 3. Bell tests and the no-signalling assumption

    Author : Massimiliano Smania; Mohamed Bourennane; Ingemar Bengtsson; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; quantum; quantum optics; Bell tests; CHSH inequality; entanglement; fysik; Physics;

    Abstract : Bell's theorem was originally meant for testing fundamental properties of Nature, namely local realism. However, through the years it has become a powerful device for certifying encryption security, randomness, and entanglement among other properties. READ MORE

  6. 4. Experimental Investigation of the Influence of Local Flow Features on the Aerodynamic Damping of an Oscillating Blade Row

    Author : Antonio Sanz Luengo; Torsten Fransson; Damian Vogt; Guillermo Paniagua; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Turbomachinery; Aeroelasticity; Flutter; Experimental Aerodynamics; CFD; Local Flow Features; Influence Coefficient; Linearity Assumption; Aerospace Engineering; Flyg- och rymdteknik;

    Abstract : The general trend of efficiency increase, weight and noise reduction has derived in the design of more slender, loaded, and 3D shaped blades. This has a significant impact on the stability of fan, and low pressure turbine blades, which are more prone to aeroelastic phenomena such as flutter. READ MORE

  7. 5. Understanding Technical Debt and Assumption-Related Challenges in the Domain of Cyber-Physical Systems

    Author : Md Abdullah Al Mamun; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Technical Debt; Cyber-Physical Systems; Assumptions; Software Engineering;

    Abstract : In today's world software is contributing a substantial part of the new functionalities and innovations of the automotive industry. So the size and the complexity of the software is dramatically increasing with time, which comes with additional challenges, e.g., implicit assumptions or technical debt. READ MORE