Modern wireless communication standards like HiperLAN/2 or IEEE802.11a provide a high degree of flexibility on the physical layer (PHY) allowing the Data Link Control (DLC) layer to choose transmission parameters with respect to the currently observed link quality. This possibility of so-called Link Adaptation (LA) is also a key element for meeting Quality of Service (QoS) requirements of highe...

Subunit vaccines typically show insufficient immunogenicity. To address this issue, we developed a novel self-adjuvanting particulate carrier system based upon the lipids phytantriol (Phy) and mannide monooleate (MaMo). Phy is a lipid known to form nonlamellar phases in fully hydrated systems, whereas MaMo has been found to promote immune responses in emulsion form. A bulk phase composition of ...

Cross-layer design has been considered recently as a new approach when designing MAC protocols in systems with diversity such as CDMA. This paper goes one step further in the cross layer design by proposing a PHY-MAC dialogue involving the exchange of parameters such as BER and active users. By means of this PHY-MAC dialogue, system performance can be improved. A two-stage receiver is used at P...

OBJECTIVE Demonstrate that occupational exposure to nonhypoxic hypobaria is associated with subcortical white matter hyperintensities (WMHs) on fluid-attenuated inversion recovery magnetic resonance imaging (MRI). METHODS Eighty-three altitude chamber personnel (PHY), 105 U-2 pilots (U2P), and 148 age- controlled and health-matched doctorate degree controls (DOC) underwent high-resolution MRI...

This paper summarizes Wi-SUN communication systems and their physical (PHY) layer and media access control (MAC) specifications. Firstly, the Wi-SUN communication systems are categorized into three. The key PHY and MAC standards, IEEE 802.15.4g and .4e, that configure the systems are explained, and fundamental transmission performances of the systems in the PHY layer and MAC layer are evaluated...

Numerical Relativity (NR) uses advanced numerical techniques in supercomputers to simulate the relativistic, strong-field dynam s and radiation of merging compact binaries, such as black holes and neutron tars, and oth r s milar phenomena that are governed by E nstein's th ory of General R lativi y (GR). Analytical relativity (AR) metho s, based on Po -Newtonian exp ns ons of the GR qua ion nd ...

Numerical Relativity (NR) uses advanced numerical techniques in supercomputers to simulate the relativistic, strong-field dynam s and radiation of merging compact binaries, such as black holes and neutron tars, and oth r s milar phenomena that are governed by E nstein's th ory of General R lativi y (GR). Analytical relativity (AR) metho s, based on Po -Newtonian exp ns ons of the GR qua ion nd ...

This paper presents a solution to increase the throughput of an HF (High Frequency) physical (PHY) layer in particular to allow for services such as IP over HF. Additionally, this new PHY layer can improve the adaptability of the waveform to the channel variations, in particular to limit the retransmissions due to errors. Taking into consideration the existing HF spectrum occupancy and its high...

A renormalizable local supersymmetry for the four dimensional antisymmetric tensor field model in a curved space–time background will be constructed. Contrary to other topological field theories a closed algebra between the BRS and the superdiffeomorphisms operator is realizable only if the vector parameter of the superdiffeomorphisms obeys a definite constraint. This also guarantees that the c...

Heavy-light bound states are studied in Lattice QCD with emphasis on parameters of the B-system relevant to experiment. Results are obtained on lattices with lattice spacings from about 0.15 fm to 0.06 fm corresponding to = 5:74; 6:0 and 6.26, and covering sizes from about 0.7 fm to 2 fm. From our results at the innnite quark mass limit and from propagating heavy quarks with mass of about 1-2.5...