Sökning: "angle"

Visar resultat 1 - 5 av 1367 avhandlingar innehållade ordet angle.

  1. 1. Low-angle estimation : Models, methods and bounds

    Författare :Katarina Boman; Peter Stoica; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signal Processing; Signalbehandling;

    Sammanfattning : In this work we study the performance of elevation estimators and lower bounds on the estimation error variance for a low angle target in a smooth sea scenario using an array antenna. The article is structured around some key assumptions on multipath knowledge, signal parameterization and noise covariance, giving the reader a framework in which Maximum Likelihood estimators exploiting different á priori information can be found. LÄS MER

  3. 2. Studies of the fibre direction and local bending stiffness of Norway spruce timber : for application on machine strength grading

    Författare :Min Hu; Marie Johansson; Mats Ekevad; Linnéuniversitetet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; digital image correlation; diving angle; fibre angle; grain angle; indicating property; laser scanning; modulus of elasticity; tracheid effect; Forestry and Wood Technology; Skog och träteknik;

    Sammanfattning : Machine strength grading is a production process in the sawmill industry used to grade sawn timber boards into different strength classes with specific characteristic values of the bending strength, modulus of elasticity (MOE) and density. These properties are called grade determining properties. LÄS MER

  4. 3. Torque and angle controlled tightening over the yield point of a screw

    Författare :Göran Toth; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; clevis; permanent elongation factor; Monte-Carlo simulations; bolted screwed joints; final preload; torque and angle controlled tightening; extreme-value method; plastic deformation; Taylor s series expansions; plastic spring constant of the screw; yield; elastic angle; momentary elongation factor; snug torque; torque controlled tightening; final torque; turn-of-nut method;

    Sammanfattning : .... LÄS MER

  5. 4. Aspects of screening for open-angle glaucoma

    Författare :Johan Aspberg; Oftalmologi (Malmö); []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Open-angle glaucoma; Screening; Preclinical detectable phase; Vision impairment; Blindness;

    Sammanfattning : .... LÄS MER

  7. 5. Power angle control of grid-connected voltage source converter in a wind energy application

    Författare :Jan Svensson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; voltage angle control; simulation; wind power; power angle control; Linear Quadric control LQ ; bandwidth; Kalman filter; control; pulse width modulation PWM ; wind energy; voltage source converter VSC ; harmonics;

    Sammanfattning : .... LÄS MER