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- Fiorenzi, Marco, et al.
(författare)
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Enhancing TCP over HSDPA by cross-layer signalling
- 2007
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Ingår i: GLOBECOM 2007: 2007 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE. - 9781424410422 ; , s. 5362-5366
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Konferensbidrag (refereegranskat)abstract
- A comprehensive performance evaluation of a cross-layer solution to increase users' downlink data rates over HSDPA is provided. The solution consists of a proxy entity between a server and the Radio Network Controller, and cross-layer signalling from the base station to the proxy. The performance of the solution is evaluated though a detailed ns-2 simulator environment, which includes all HSDPA features, as well as some existing TCP enhancing protocols widely adopted for internet traffic over wireless links. Numerical results show that the proxy significantly increases the users' throughput, while also improving the utilization of the radio resources.
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- Lang, Niklaus P., et al.
(författare)
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Implant surfaces and design (Working Group 4)
- 2009
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Ingår i: Clinical Oral Implants Research. - 0905-7161 .- 1600-0501. ; 20 Suppl 4, s. 228-231
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Tidskriftsartikel (refereegranskat)abstract
- INTRODUCTION: The remit of this working group (4) was to update existing knowledge on the effects of implant surface topography, composition and design on bone integration and re-osseointegration. MATERIAL AND METHODS: Based on five narrative reviews that were performed following a defined search strategy, clinical implications as well as suggestions for further research have been formulated. RESULTS: The results and conclusions of the review processes in the following papers together with the group consensus, clinical implications and directions for future research are presented: 1. Effects of titanium surface topography on bone integration. 2. Effects of implant surface coatings and composition on bone integration (two reviews). 3. Effects of different implant surfaces and designs on marginal bone level alterations. 4. Re-osseointegration onto previously contaminated implant surfaces.
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| 6. |
- Lang, Niklaus P., et al.
(författare)
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Implant surfaces and design (Working Group 4)
- 2009
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Ingår i: Clinical Oral Implants Research. - : Blackwell Munksgaard. - 0905-7161 .- 1600-0501. ; 20 Suppl 4, s. 228-231
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Tidskriftsartikel (refereegranskat)abstract
- INTRODUCTION: The remit of this working group (4) was to update existing knowledge on the effects of implant surface topography, composition and design on bone integration and re-osseointegration. MATERIAL AND METHODS: Based on five narrative reviews that were performed following a defined search strategy, clinical implications as well as suggestions for further research have been formulated. RESULTS: The results and conclusions of the review processes in the following papers together with the group consensus, clinical implications and directions for future research are presented: 1. Effects of titanium surface topography on bone integration. 2. Effects of implant surface coatings and composition on bone integration (two reviews). 3. Effects of different implant surfaces and designs on marginal bone level alterations. 4. Re-osseointegration onto previously contaminated implant surfaces.
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- Torrisi, Lorenzo, et al.
(författare)
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Single crystal silicon carbide detector of emitted ions and soft x rays from power laser-generated plasmas
- 2009
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Ingår i: Journal of Applied Physics. - : American Institute of Physics (AIP). - 0021-8979 .- 1089-7550. ; 105, s. 123304-1-123304-7
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Tidskriftsartikel (refereegranskat)abstract
- A single-crystal silicon carbide SiC detector was used for measurements of soft x rays, electrons, and ion emission from laser-generated plasma obtained with the use of the Prague Asterix Laser System PALS at intensities of the order of 1016 W/cm2 and pulse duration of 300 ps. Measurements were performed by varying the laser intensity and the nature of the irradiated target. The spectra obtained by using the SiC detector show not only the photopeak due to UV and softx-ray detection, but also various peaks due to the detection of energetic charged particles. Time-of-flight technique was employed to determine the ion kinetic energy of particles emitted from the plasma and to perform a comparison between SiC and traditional ion collectors. The detector was also employed by inserting absorber films of different thickness in front of the SiC surface inorder to determine, as a first approximation, the mean energy of the soft x-ray emission from the plasma.
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