Sökning: "Karlsson 2008"

Visar resultat 1 - 5 av 69 avhandlingar innehållade orden Karlsson 2008.

  1. 1. Modelling and analysis of multiphysical interactions in hydropower rotor systems

    Författare :Martin Karlsson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Datorstödd maskinkonstruktion; Computer Aided Design;

    Sammanfattning : In this thesis the objective is to develop rotordynamical models of hydropower units, where coupling between mechanical, electromagnetic and fluid dynamical system systems is of certain interest. Both fluid-rotor and electromechanical interactions are known to change the system coefficients of the rotor system, which affects eigenfrequencies, damping, stability and response. LÄS MER

  3. 2. Kan symboler överföra mening? : en teoretisk diskussion om kommunikation

    Författare :Stefan Karlsson; Luleå tekniska universitet; []
    Nyckelord :;

    Sammanfattning : This work is divided into two parts - a practical/technical view of communication, followed by a change to a broader view with a theoretical language perspective. The overarching purpose is:To increase the understanding of how meaning is transferred between people through the use of symbols. LÄS MER

  4. 3. Low-delay sensing and transmission in wireless sensor networks

    Författare :Johannes Karlsson; Mikael Skoglund; Markus Flierl; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cooperative communication; wireless sensor networks; low-delay transmission; joint source-channel coding; estimation; quantization; Telecommunication; Telekommunikation;

    Sammanfattning : With the increasing popularity and relevance of ad-hoc wireless sensor networks, cooperative transmission is more relevant than ever. In this thesis, we consider methods for optimization of cooperative transmission schemes in wireless sensor networks. LÄS MER

  5. 4. Older people`s public health care and social services : Functional ability, health complaints, agreement in needs assessment and care satisfaction

    Författare :Staffan Karlsson; Ingalill Rahm Hallberg; Anna-Karin Edberg; Albert Westergren; Kenneth Asplund; Institutionen för hälsovetenskaper; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Sammanfattning : The overall aim was to describe and compare functional ability and health complaints of older people receiving municipal care in relation to housing and informal care, and factors associated with medical health care, municipal care and informal care. Further, the aim was to investigate agreement in needs assessments between personnel and older people and to investigate care satisfaction and health-related quality of life among older people receiving municipal care and services. LÄS MER

  7. 5. New Mass Spectrometric Methods for Structure Analysis of Carboxymethyl Cellulose

    Författare :Jonas Enebro; Sigbritt Karlsson; Dane Momcilovic; Ulf Germgård; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; carboxymethyl cellulose; substituent distribution; rheology; enzyme hydrolysis; cellulase; permethylation; liquid chromatography; MALDI; ESI; mass spectrometry; Polymer chemistry; Polymerkemi;

    Sammanfattning : Carboxymethyl cellulose (CMC) is a cellulose derivative, made from cellulose by introduction of carboxymethyl groups along the molecules. The properties of CMC are affected by several parameters where the molar mass and molar mass distribution, degree of substitution (DS) and the distribution pattern along, and between, the cellulose molecules are the most prominent. LÄS MER