Sökning: "Ulf Westberg"

Hittade 2 avhandlingar innehållade orden Ulf Westberg.

  1. 1. Applications of the PEXE-concept for maintenance policies and proportional hazards models

    Författare :Ulf Westberg; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Kvalitetsteknik; Quality Technology and Management;

    Sammanfattning : .... LÄS MER

  3. 2. On efficient use of censored data and covariate factors in survival analysis and maintenance scheduling

    Författare :Ulf Westberg; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Kvalitetsteknik; Quality Technology and Management;

    Sammanfattning : This thesis deals with survival analysis and maintenance scheduling, two important issues to achieve efficient use of different production systems. In survival analysis of failure time data, the survival function and the cumulative hazard function are important reliability characteristics. LÄS MER