Sökning: "directional problem"

Visar resultat 21 - 25 av 43 avhandlingar innehållade orden directional problem.

  1. 21. Process modeling of liquid composite molding processes

    Författare :Da Wu; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Resin cure; Porous media theory; Process modeling; Polymer composites; Liquid composite molding; Fabric composites;

    Sammanfattning : The polymer matrix composites (PMCs) are carving out a niche amid the keen market competition to replace the other material counterparts, e.g., metals. Due to the low weight and the corrosion resistance, the PMCs are wildly utilized from aerospace to automobile industries, both in the sectors of civilian and defense. LÄS MER

  3. 22. Boundary Detection in Cardiovascular Ultrasonic Images Based on Multiscale Dynamic Programming

    Författare :Quan Liang; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; multiscale dynamic programming; artery measurement; cardiac measurement; edge-preserving smoothing; ultrasonic imaging; boundary detection;

    Sammanfattning : Non-invasive ultrasonic imaging is widely used in cardiovascular studies as well as clinical diagnostics. This is due to its non-invasiveness, low cost and easy operation. However, ultrasonic images are noisy and present artifacts, speckles, and echo dropouts. LÄS MER

  4. 23. Transport, Mobility, and Workplace Location : Models and Applications

    Författare :Fatemeh Naqavi; Muriel Beser Hugosson; Nathalie Picard; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Transportsystem; Transport Systems;

    Sammanfattning : Travel demand analysis is one of the core constituents of transportation studies. Therequired insight to maintain and develop a sustainable transportation system, in additionto learning from previous research globally and locally, is generated from studyingthe effects of previous policies, investigating future possibilities and potential outcomes,and describing the current situation. LÄS MER

  5. 24. Analysis and Optimization for Robust Millimeter-Wave Communications

    Författare :Cristian Tatino; Di Yuan; Nikolaos Pappas; Carlo Fischione; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Spectrum scarcity is a longstanding problem in mobile telecommunications networks. Specifically, accommodating the ever-growing data rate and communications demand in the extensively used spectrum between 800 MHz and 6 GHz is becoming more challenging. LÄS MER

  7. 25. A new look at parenting during adolescence : reciprocal interactions in everyday life

    Författare :Kari Trost; Håkan Stattin; Margaret Kerr; Rutger C.M.E. Engels; Örebro universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Adolescent adjustment; parent-child relationship; parenting; reciprocal interactions; psykologi; Psychology; Psykologi; Psychology; Psykologi;

    Sammanfattning : In this dissertation I pose the question: Under what conditions are parent-child relationships linked to good, or bad, adolescent adjustment and under what conditions are they not? Study I focused on subjects with multiproblematic adjustment. It was proposed that multiproblematic adjustment in adolescence (as well as in late childhood and early adulthood) has to be seen in terms of individual and family characteristics early in life. LÄS MER