Sökning: "Boolean operation"

Hittade 4 avhandlingar innehållade orden Boolean operation.

  1. 1. Investigations of Issues Relevant to the Application of Photon Echoes in Information Technology

    Författare :Ulf Elman; Atomfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; nonlinear optics; fibre amplifier; Boolean operation; rare earth metals; Atom- och molekylärfysik; Atomic and molecular physics; optical processing; photon echo; optical storage; Fysicumarkivet A:1998:Elman;

    Sammanfattning : Photon echoes have been studied both experimentally and theoretically, with the main part of the work centred around the concept of using photon echoes for all-optical data storage and processing. The four basic Boolean operators, AND, OR, NOT and XOR have been experimentally demonstrated using photon echoes. LÄS MER

  3. 2. Techniques for Efficient Constraint Propagation

    Författare :Mikael Zayenz Lagerkvist; Seif Haridi; Christian Schulte; Pierre Flener; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; constraint programming; constraint propagation; optimization; Computer science; Datalogi;

    Sammanfattning : This thesis explores three new techniques for increasing the efficiency of constraint propagation: support for incremental propagation, improved representation of constraints, and abstractions to simplify propagation.  Support for incremental propagation is added to a propagator centered propagation system by adding a new intermediate layer of abstraction, advisors, that capture the essential aspects of a variable centered system. LÄS MER

  4. 3. Symbolic Methods and Tools for Discrete Event Dynamic Systems

    Författare :Johan Gunnarsson; Lennart Ljung; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Decision diagrams; Polynomial relational representation; Landing gear controller;

    Sammanfattning : The interest in Discrete Event Dynamic Systems (DEDS) has increased during the last years, due to the lack of methods and tools that are capable of handling the complexity of problems and tasks present in industry today. In this thesis we will consider a framework based on relations over finite domains. LÄS MER

  5. 4. Fuel-Efficient Look-Ahead Control for Heavy-Duty Vehicles with Varying Velocity Demands

    Författare :Manne Held; Jonas Mårtensson; Oscar Flärdh; Ardalan Vahidi; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; look-ahead control; optimal control; powertrain control; advanced driver assistance systems; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : The fuel consumption of heavy-duty vehicles can be reduced by using information about the upcoming road section when controlling the vehicles. Most manufacturers of heavy-duty vehicles today offer such look-ahead controllers for highway driving, where the information consists of the road grade and the velocity only has small variations. LÄS MER