Search for dissertations about: "Model Validation"

Showing result 6 - 10 of 876 swedish dissertations containing the words Model Validation.

  2. 6. Optimization and Model Validation of Transonic Compressors

    Author : Lars R Ellbrant; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; compressor; optimization; design; metamodels; CFD; validation; multiobjective;

    Abstract : Economical aspects such as reduced specific fuel consumptions and ever growing environmental requirements on emissions and percieved noise levels, are the major drivers in the search for improvement of aircraft engines. For turbofan engines, the global trend is towards higher efficiency which is accomplished by increasing component efficiencies, the bypass ratio and overall pressure ratio while keeping the engine weight low. READ MORE

  4. 7. Definition and validation of requirements management measures

    Author : Annabella Loconsole; Jürgen Börstler; Björn Regnell; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Requirement; Measures; Volatility; Theoretical Validation; Empirical Validation; Prediction Model; Correlational Study; Subjective Estimation.; Software engineering; Programvaruteknik;

    Abstract : The quality of software systems depends on early activities in the software development process, of which the management of requirements is one. When requirements are not managed well, a project can fail or become more costly than intended, and the quality of the software developed can decrease. READ MORE

  5. 8. On dependability validation of safety critical systems

    Author : Sven Svensson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; VHDL; fault tolerance; coverage model; experimental validation; jet engine control; fault injection; FADEC; error detection; Markov model;

    Abstract : .... READ MORE

  6. 9. On Standardized Model Integration : Automated Validation in Aircraft System Simulation

    Author : Robert Hällqvist; Petter Krus; Magnus Eek; Robert Braun; Henrik Tidefelt; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Designing modern aircraft is not an easy task. Today, it is not enough to optimize aircraft sub-systems at a sub-system level. Instead, a holistic approach is taken whereby the constituent sub-systems need to be designed for the best joint performance. READ MORE

  7. 10. Methods for Early Model Validation : Applied on Simulation Models of Aircraft Vehicle Systems

    Author : Magnus Carlsson; Johan Ölvander; Hampus Gavel; Lars Eriksson; Linköpings universitet; []
    Keywords : ;

    Abstract : Simulation  models of physical systems, with or without control software, are widely used in the aeronautic industry in applications ranging from system development to verification and end-user training. With the main drivers of reducing the cost of physical testing and in general enhancing the ability to take early model-based design decisions, there is an ongoing trend of further increasing the portion of modeling and simulation. READ MORE