148,282 Works

Semiconductor quantum dots grown in inverted pyramids

Yann Ducommun
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L'intervention des communes dans les politiques publiques

Katia Horber-Papazian
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Etude de la microstructuration du verre par étincelage assisté par attaque chimique:une approche électrochimique

Valia Fascio
We are surrounded by glass! This material has been greatly used for thousand years. More than 2000 years ago in ancient Egypt glass was used to manufacture bottles of perfume. So its first uses were primarily related to decoration and jewellery. The researchers left its decorative use to introduce it to new technologies. Today miniaturisation is a major technological challenge. Material machining to micrometric or submicrometric scale becomes one of the key techniques for the...
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Stabilität von Tragelementen aus Glas

Andreas Luible
Stability of load carrying elements in glass The increasing demand in modern architecture for more slender and lighter structures requires the use of new construction materials. Glass, a material that has been used for a long time in windows as a filling material, has much to offer in this regard due to its very high compressive strength and transparency. For this reason, there is a growing trend to extend the use of glass sheets to...
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A self-sensing active magnetic bearing:modulation approach

Alexandre Schammass
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Fibre optic sensors and behaviour in concrete at early age

Branko Glisic
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Noise and the neural response to current transients

Alix A. Kamakaokalani Herrmann
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Optical properties of semiconductor cluster cations studied in a molecular beam

Jean-Marie Antonietti
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Group communications and database replication:techniques, issues and performance

Matthias Wiesmann
Databases are an important part of today's IT infrastructure: both companies and state institutions rely on database systems to store most of their important data. As we are more and more dependent on database systems, securing this key facility is now a priority. Because of this, research on fault-tolerant database systems is of increasing importance. One way to ensure the fault-tolerance of a system is by replicating it. Replication is a natural way to deal...
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Planning and performance evaluation of integrated services networks

Jürgen Ehrensberger
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Development of the Jungfraujoch multiwavelength lidar system for continuous observations of the aerosol optical properties in the free troposphere

Gilles Larchevêque
Climate changes and global warming are generally associated with the enhanced greenhouse effect, but aerosols can induce a cooling effect and thus regionally mask this warming effect. Unfortunately, the strong variability both in space and in time of the aerosols and thus the difficulty to characterize their global basic properties induce large uncertainties in the predictions of the numerical models. Those uncertainties are as high as the absolute level of the enhanced greenhouse forcing. To...
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Dendritic hyperbranched polymers as reactive additives in thermoplastic materials

Claes Gustav Jannerfeldt
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Photosensitivity and bragg grating technology for upconversion all-fiber lasers

Marcel Zeller
Fiber lasers are compact lightsources with high intrinsic beam quality and high efficiency. The lasing spectrum ranges from the blue to the near infrared and is achievable using fibers with different dopants and glass compositions. All-fiber lasers are characterized by a high attainable stability and are also available in the pulsed regime. A widespread range of applications for all-fiber lasers exists in the domain of telecommunications as well as in the medical domain. The first...
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New algorithmic methods for real-time transportation problems

Frank Crittin
Two of the most basic problems encountered in numerical optimization are least-squares problems and systems of nonlinear equations. The use of more and more complex simulation tools on high performance computers requires solving problems involving an increasingly large number of variables. The main thrust of this thesis the design of new algorithmic methods for solving large-scale instances of these two problems. Although they are relevant in many different applications, we concentrate specifically on real applications...
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Dielectric spectroscopy in a microfabricated flow cytometer

Shady Didier Gawad
In this thesis, a new microfabricated flow cytometer for single cell discrimination based on dielectric spectroscopy is presented. Integrated tools for rapid in-flow cell handling are also demonstrated. Signal amplification and analysis as well as the chip fabrication process are described. Finally, measurements on beads and cells are presented and discussed. Due to differences in their complex dielectric properties and dimensions, specific information from cell sub-structures such as the cell membrane, cytoplasm or nucleus can...
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Optische Augenlängenmessung für klinische Anwendungen

Beate Möller
Cataract is the leading cause of blindness worldwide. The clouding of the human eye lens is called "Grauer Star" in German. In the industrialized countries this process of increased blindness is corrected by the surgical removal of the clouded lens and its replacement by a plastic lens (intraocular lens, IOL). Cataract surgery is the most frequent surgery worldwide. In Europe more than two million operations are performed annually. For the selection of an optimum replacement...
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Etude des propriétés mécaniques des feuilles minces

Moshe Patrick Judelewicz
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An experimental investigation of a lean burn natural gas prechamber spark ignition engine for cogeneration

Roger Röthlisberger
The operation of a cogeneration internal combustion engine with unscavenged prechamber ignition was investigated. The objective was to evaluate the potential to reduce the exhaust gas emissions, particularly the CO emissions, below the Swiss limits (NOx and CO emissions: 250 and 650 mg/m3N, 5% O2 , respectively), without exhaust gas after treatment. The investigation was carried out on a small size gas engine (6 cylinders, 122 mm bore, 142 mm stroke) and required the development...
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Estimation par intervalles au moyen du jackknife et de méthodes asymptotiques

Estelle Martin
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Acoustic goniometry:a spatio-temporal approach

Eric Van Lancker
This work was motivated by the increasing need for acoustic localization systems. The various localization systems that were implemented during this PhD include localization of snow avalanches, artillery and supersonic aircraft in the infrasound domain, the localization of helicopters, civilian aircraft, speakers and auditorium reflections in the audio domain and the localization of chirps in the underwater ultrasound domain. The "goniometer" is defined as an instrument that measures angles. An "acoustic goniometer" is therefore a...
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Registration Year

  • 2010
    148,282

Resource Types

  • Text
    148,282