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Visar resultat 21 - 25 av 140 avhandlingar som matchar ovanstående sökkriterier.

  1. 21. Performance modeling and control of web servers

    Författare :Mikael Andersson; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This thesis deals with the task of modeling a web server and designing a mechanism that can prevent the web server from being overloaded. Four papers are presented. The first paper gives an M/G/1/K processor sharing model of a single web server. The model is validated against measurements ands imulations on the commonly usedw eb server Apache. LÄS MER

  3. 22. Markov Decision Problems in ATM Traffic Control

    Författare :Ernst Nordström; Lars Asplund; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Computer Systems; Datorteknik;

    Sammanfattning : This thesis discusses how to make cost-effective use of the communication resources in the Broadband Integrated Services Digital Network (B-ISDN), which is based on the Asynchronous Transfer Mode (ATM) switching and multiplexing technique.The thesis deals with two important functions in ATM traffic control, namely Call Admission Control (CAC) and routing, which affects both the network operator's revenue over time and the users' Quality of Service (QOS) and Grade of Service (GOS). LÄS MER

  4. 23. Error and Traffic Control for High-Speed Networks

    Författare :Henrik Lundqvist; Gunnar Karlsson; Shivkumar Kalyanaraman; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telecommunication; Telecommunication; Telekommunikation;

    Sammanfattning : The Internet evolves rapidly, both in terms of the applications that use it and the networks that carry the traffic. This creates many important research tasks, both to adapt the networks that carry the traffic to work well together with the Internet protocols and to make the protocols robust to tolerate various underlying networks. LÄS MER

  5. 24. Active Resource Management in Middleware and Service-oriented Architectures

    Författare :Niklas Widell; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telekommunikationsteknik; Telecommunication engineering; Intelligent Networks; TINA; web systems; distributed systems; resource allocation; stochastic optimization; simulation models; performance analysis; overload control; load balancing;

    Sammanfattning : In this thesis, we study load balancing and overload control in two distributed architectures: Distributed Object Computing (DOC) systems and Services-oriented Architecture (SOA) systems. While DOC and SOA have differences in terms of implementation, they are similar from a performance viewpoint. LÄS MER

  7. 25. Effects of higher education and the role of admission selection

    Författare :Björn Öckert; Niels Westergård-Nielsen; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Higher education; Sweden; Högskolan; antagning; Sverige; Economics; nationalekonomi;

    Sammanfattning : Study I Using Admission Selection Rules to Estimate the University Earnings Premium - A Regression-Discontinuity DesignThis study estimates the earnings premiums for university admission and graduation, using unique data from the admission selection process. Applicants and non-applicants for university in Sweden in 1982 are studied in terms of earnings in 1996. LÄS MER