Sökning: "Conceptual model"

Visar resultat 21 - 25 av 692 avhandlingar innehållade orden Conceptual model.

1. 21. Model based aircraft design : high angle of attack aerodynamics and weight estimation methods

   Författare :Christopher Jouannet; John Fielding; Linköpings universitet; []
   Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

   Sammanfattning : This thesis addresses modelling of high angle of attack aerodynamic characteristics and weight estimation for highly maneuverable aircraft during conceptual design. In order to allow configuration selection with sufficient confidence, especially with unconventional configurations, high angle of attack aerodynamic prediction and weight estimations methods need to be improved. LÄS MER

3. 22. Corrective maintenance maturity model : problem management

   Författare :Mira Kajko-Mattsson; Ned Chapin; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; System design; Maintenance process models; Systemutveckling; data- och systemvetenskap; Computer and Systems Sciences;

   Sammanfattning : Maintenance has become one of the most complex, crucial and costly disciplines within software engineering. Despite this, very few maintenance process models have been suggested. The extant models are too general, covering all maintenance categories, i.e. LÄS MER

4. 23. Product innovation processes : conceptual and methodological considerations

   Författare :Sven Andersson; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Redovisning och styrning; Accounting and Control;

   Sammanfattning : This thesis addresses the social dimension of individuals engaging in the product innovation process in order to develop and choose techniques for knowledge creation about the social evolvement of a product innovation. The social dimensions of product innovation processes are particular interesting, since many firms today organize their processes by combining individuals from different functions and knowledge areas. LÄS MER

5. 24. Model-based execution monitoring

   Författare :Marcus Bjäreland; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Computer science; Datavetenskap;

   Sammanfattning : The task of monitoring the execution of a software-based controller in order to detect, classify, and recover from discrepancies between the actual effects of control actions and the effects predicted by a model, is the topic of this thesis. Model-based execution monitoring is proposed as a technique for increasing the safety and optimality of operation of large and complex industrial process controllers, and of controllers operating in complex and unpredictable environments (such as unmanned aerial vehicles). LÄS MER

7. 25. On aircraft fuel systems : conceptual design and modeling

   Författare :Hampus Gavel; Petter Krus; Johan Ölvander (Andersson); Dieter Scholz; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Aircraft; morphological matrix; simulation; Saab; Gripen; Construction engineering; Konstruktionsteknik;

   Sammanfattning : The largest and most important fluid system in an aircraft is the fuel system. Obviously, future aircraft projects involve the design of fuel system to some degree. In this project design methodologies for aircraft fuel systems are studied, with the aim to shortening the system development time. LÄS MER