Essays about: "doctoral thesis"

Showing result 1 - 5 of 24 essays containing the words doctoral thesis.

1. 1. Relating the Arnoldi approximation to the best Chebyshev approximation of the characteristic polynomial - A study using a complex valued variant of the Remez algorithm

   University essay from Lunds universitet/Matematik (naturvetenskapliga fakulteten); Lunds universitet/Matematikcentrum

   Author : Thomas Renström; [2022]
   Keywords : Chebyshev; Arnoldi; Remez; Tang; approximation; matrix; complex; characteristic polynomial; Mathematics and Statistics;

   Abstract : The Remez algorithm is a beautiful algorithm that finds the best approximation to a function by finding points satisfying the alternation condition. In 1987 Ping Tang published his doctoral thesis detailing a version of the Remez algorithm modified for functions of complex values with complex coefficients. READ MORE

3. 2. Identifying Transit Timing Variations in K2 and TESS light curves

   University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

   Author : Linn Friis-Liby; [2022]
   Keywords : Exoplanets; TESS; K2; Transit Timing Variations;

   Abstract : Aims. The aim of this work is to investigate any presence of transit timing variations (TTVs) in a sample of observed targets that has light curves in both K2 mission data and TESS mission data.  Methods. The original sample utilised here was one from the doctoral thesis of D. READ MORE

4. 3. CFD Based External Heat Transfer Coefficient Predictions on a Transonic Film-Cooled Gas Turbine Guide Vane : A Computational Fluid Dynamics Study on the Von Karman Institute LS94 Test Case

   University essay from Linköpings universitet/Mekanisk värmeteori och strömningslära

   Author : Rosalie Johnsson; Lilian Asiegbu; [2022]
   Keywords : gas turbine; turbine inlet guide vane; film-cool; film cool; Computational Fluid Dynamics; CFD; heat transfer coefficient; Shear Stress Transport k-ω; SST k-ω; Scale Resolving Hybrid; SRH; turbulence modelling;

   Abstract : The turbine inlet guide vanes of a gas-turbine are subjected to extreme hot gas temperatures which increases the risk of mechanical failure and overall reduces the component lifespan. Hence, it is of great interest for gas-turbine manufacturers to establish methods for accurately estimating the temperature distribution along the vane surface. READ MORE

5. 4. Diagnosing Tuberculosis - A critical review of palaeopathological literature on tuberculosis in human skeletal and mummified remains

   University essay from Lunds universitet/Historisk osteologi

   Author : Lina Andersson; [2021]
   Keywords : Tuberculosis; critical review; methods; palaeopathology; Pott´s disease; ribs; History and Archaeology;

   Abstract : To analyse tuberculosis both in present and historic times becomes very important in order to understand the magnitude of this disease. The presented information in this thesis was based on a quantitative analysis of skeletal traits and aDNA used to diagnose tuberculosis in skeletal material and mummified remains. READ MORE

6. 5. Shear strength of prestressed concrete beams without shear reinforcement : A comparison between equations

   University essay from KTH/Betongbyggnad

   Author : Bawan Azad; [2021]
   Keywords : Shear force; prestress concrete; design provisions; Eurocode; carrying capacity; parametric study; concrete beam; Tvärkraft; förspänd betong; dimensioneringsbestämmelser; Eurokod; bärförmåga; parameterstudie; betongbalk;

   Abstract : A new version of EN 1992-1-1, Eurocode 2 for Design of Concrete Structures, is under development and one of the most discussed topics is shear capacity for prestressed concrete beams without shear reinforcement, partly because shear failure occurs suddenly and can have catastrophic consequences. For the new version of Eurocode, there are a total of three proposed equations to replace the two equations that currently exist in EN 1992-1-1 for shear capacity of prestressed concrete beams without shear reinforcement. READ MORE