Sökning: "bend"

Visar resultat 16 - 20 av 72 avhandlingar innehållade ordet bend.

  1. 16. Rhetorical business : A study of marketing work in the spirit of contradiction

    Författare :Tomas Nilsson; Institutionen för tjänstevetenskap; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; ethnography; consulting; professional services; knowledge-intensive services; sophists; argumentation; rhetoric; marketing work; marketing practice; Marketing; rhetorical analysis; Marketing; Marketing;

    Sammanfattning : Marketing has traditionally been understood from the perspective of marketing management. This causes problems when we study marketing practices because the normative discourse of marketing management is not particularly useful for describing the day-to-day work of marketing practitioners. This calls for marketing research from new perspectives. LÄS MER

  3. 17. Experimental investigation of a Kaplan runner under steady-state and transient operations

    Författare :Kaveh Amiri; Gabriel Dan Ciocan; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strömningslära; Fluid Mechanics;

    Sammanfattning : Hydropower is a key part in electricity production nowadays. Hydropower electricity production rose to 3579.5 TWh in 2013, ranked as the second source of electricity production in the world after fossil fuels. It is the principle source of renewable electricity production, producing 16. LÄS MER

  4. 18. Studies of sound generation and propagation in flow ducts

    Författare :Fabrice Ducret; Mats Åbom; Andy Moorhouse; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; two-port; plane wave; HVAC system; tailpipe; exhaust system; flexible duct; pipe; reflection coefficient; impedance; flow noise; vorticity; damping; scaling laws; impedance; transmission loss; perforated plate; slit; non linearity; Acoustics; Akustik;

    Sammanfattning : This thesis contains three papers investigating problems of interest for noise control in ducts. The first part of this thesis treats the sound propagation in rectangular ducts with flexible walls. Various experimental techniques are performed to measure the internal sound propagation and radiation to the surrounding. LÄS MER

  5. 19. Utilization of Decomposition Techniques for Analyzing and Characterizing Flows

    Författare :Christian Carlsson; Strömningsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Decomposition techniques; Proper orthogonal decomposition; Dynamic mode decomposition; Extended dynamic mode decomposition; Swirl switching; Swirling flow; Low swirl burner; Fluid-structure interaction;

    Sammanfattning : This thesis presents the utilization of two different decomposition techniques, proper orthogonal decomposition (POD) and dynamic mode decomposition (DMD), for enhanced understanding of flow structures and their stability. The advantages of these techniques are shown for a range of flow situations, most of which are turbulent. LÄS MER

  7. 20. Dynamic Mechanical Studies of Wood, Paper and some Polymers Subjected to Humidity Changes

    Författare :Reza Ebrahimzadeh Pirshahid; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wood; paper; mechanosorption; hygroscopic polymers; PEO; cellophane; PVAc; PA6; diffusion; dynamic mechanical properties;

    Sammanfattning : The dynamic mechanical response of several hygroscopic materials including wood (Scots pineveneer), paper (unbleached sulphate), cellophane, polyamide 6 (PA6) and poly(vinyl acetate)(PVAc) have been studied especially under conditions of a stepwise varying humidity in the atmosphere surrounding the samples. In all cases the in phase and out of phase components of the force necessary to achieve a given deformation were measured for various oscillation frequencies (from 0. LÄS MER