Search for dissertations about: "6 SIGMA"

Showing result 1 - 5 of 38 swedish dissertations containing the words 6 SIGMA.

  2. 1. Continuous-Time Delta-Sigma Modulators for Wireless Communication

    Author : Mattias Andersson; Institutionen för elektro- och informationsteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; return-to-zero; A D converter; loop delay; delta-sigma; ADC; CMOS; STF; continuous-time; sigma; delta; filtering; CT; RZ;

    Abstract : The ever increasing data rates in wireless communication require analog to digital converters (ADCs) with greater requirements on speed and accuracy, while being power efficient to prolong battery life. This dissertation contains an introduction to the field and five papers that focus on the continuous-time (CT) Delta-Sigma modulator (DSM) as ADC. READ MORE

  4. 2. Six Sigma management. Action research with some contributions to theories and methods

    Author : Peter Cronemyr; Bo Bergman; Bjarne Bergquist; Swedeb Gothenburg Chalmers University of Technology Department of Technology Management and Economics; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Six Sigma; Process Management; Action Research; Customer Feedback; Process Door; Knowledge Overlapping; DMADC; Process Simulations.;

    Abstract : Many companies around the world have implemented Six Sigma as a problem solving methodology especially useful for dealing with recurring problems in business processes. Since the 1980s when it was developed at Motorola, many companies have tried to implement Six Sigma to fit their own company’s culture and goals. READ MORE

  5. 3. Digitally Enhanced Continuous-Time Sigma-Delta Analogue-to-Digital Converters

    Author : Julian Garcia; Ana Rusu; Maurits Ortmanns; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; analogue-to-digital conversion; sigma-delta modulation; digital enhancement; continuous-time; multi-channel applications;

    Abstract : The continuous downscaling of CMOS technology presents advantagesand difficulties for IC design. While it allows faster, denser and more energy efficient digital circuits, it also imposes several challenges which limit the performance of analogue circuits. READ MORE

  6. 4. General stress proteins: Novel function and signals for induction of stationary phase genes in E.coli

    Author : Örjan Persson; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; general stress response; universal stress protein; sigma S; DNA damage; fructose-6-phosphate; ruvC;

    Abstract : Survival during conditions when nutrients become scarce requires adaptation and expression of genes for maintenance in order for the cell to survive. Among the numerous proteins involved in adaptation and regulation under these conditions, the stationary phase sigma factor, σS, and the Universal stress proteins contribute to survival and bestow the cell with general stress protective functions during growth arrest. READ MORE

  7. 5. Sigma-delta based techniques for future multi-standard wireless radios

    Author : Steffen Albrecht; Mohammed Ismail Elnaggar; Franz Dielacher; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Electronic structure; Elektronstruktur;

    Abstract : Improvements in process technology and design innovations have resulted in compact and cost effective digital baseband solutions. The radio part, however, has remained a bottleneck in terms of chip area and power consumption as the feature size of analog devices does not directly benefit from scaling. READ MORE