Sökning: "Back and front stage"

Visar resultat 1 - 5 av 10 avhandlingar innehållade orden Back and front stage.

1. 1. Extended Application of Robust Design Methodology

   Författare :Vanajah Siva Subramaniam; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; practices; life cycle approach; Robust design methodology; back-end data; sustainable product development;

   Sammanfattning : Robust Design Methodology (RDM), a subset of Quality Management (QM), is an approach applied to the design phase of product development in order to manage variability in product performance by creating insensitivity to noise factors. Noise factors are sources of variation that cannot be readily controlled. LÄS MER

3. 2. Rhine cities - urban flood integration (UFI) : German and Dutch adaptation and mitigation strategies

   Författare :Cornelia Redeker; V.J. Meyer; Netherlands Delft Department of Urbanism Faculty of Architecture and The Built Environment Delft University of Technology; []
   Nyckelord :HUMANIORA; HUMANITIES; Flood management; Rhine; Germany; Netherlands; Urban Flood Integration; climate change; klimatförändringar; sustainability; hållbarhet; design; design;

   Sammanfattning : Flood Risk Management along the Rhine today combines river expanding measures and adaptive strategies with the existing defensive system to cope with the risk increase as a consequence of previous interventions and developments and fluctuations in water levels due to climate change. Differences in landscapes and urgencies and differences in planning cultures between the Upper and Lower Rhine and the Delta have also led to different strategic approaches. LÄS MER

4. 3. ZrN Back-Contact Reflectors and Ga Gradients in Cu(In,Ga)Se2 Solar Cells

   Författare :Sebastian Michael Schleussner; Marika Edoff; Tobias Törndahl; Uwe Zimmermann; Dieter Schmid; Uppsala universitet; []
   Nyckelord :Solar cells; CIGS; ZrN; three-stage process; multi-stage process; grading; SIMS; electrical modelling; NATURAL SCIENCES; NATURVETENSKAP; Teknisk fysik med inriktning mot elektronik; Engineering Science with specialization in Electronics;

   Sammanfattning : Solar cells constitute the most direct way of converting solar energy to electricity, and thin-film solar-cell technologies have lately been growing in importance, allowing the fabrication of less expensive modules that nonetheless have good power-conversion efficiencies. This thesis focuses on solar cells based on Cu(In,Ga)Se2, which is the thin-film technology that has shown the highest conversion efficiency to date, reaching 20. LÄS MER

5. 4. InP DHBT Amplifiers and Circuit Packaging up to Submillimeter-Wave Frequencies

   Författare :Klas Eriksson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; InP; WR05; packaging; noise figure; substrate modes; WR03.; multiple layer interconnect; double heterojunction bipolar transistor DHBT ; G-band; wideband; H-band; waveguide transition; distributed amplifier DA ; millimeter-wave; amplifier; low-noise amplifier LNA ; membrane technology; waveguide module; submillimeter-wave;

   Sammanfattning : This thesis treats the design and characterization of amplifiers operating up tosubmillimeter-wave frequencies and packaging of such circuits into waveguidemodules. The circuits use an advanced indium phosphide (InP) double heterojunctionbipolar transistor (DHBT) process with a multilayer back-end. LÄS MER

7. 5. Signal Shaping and Sampling-based Measurement Techniques for Improved Radio Frequency Systems

   Författare :Charles Nader; Peter Händel; Niclas Björsell; Wendy Van Moer; Lee Barford; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : Wireless communication systems are omnipresent in our day-to-day life, with high expectations regarding capacity, reliability and power efficiency. In order to satisfy the capacity and reliability expectations, today's wireless systems are adopting sophisticated modulation schemes, such as orthogonal frequency division multiplexing (OFDM), which shape today's wireless signals with large bandwidths and high crest factors. LÄS MER