نتایج جستجو برای: mc simulation
تعداد نتایج: 573595 فیلتر نتایج به سال:
OBJECTIVES Third-body wear is believed to be one trigger for adverse results with metal-on-metal (MOM) bearings. Impingement and subluxation may release metal particles from MOM replacements. We therefore challenged MOM bearings with relevant debris types of cobalt-chrome alloy (CoCr), titanium alloy (Ti6Al4V) and polymethylmethacrylate bone cement (PMMA). METHODS Cement flakes (PMMA), CoCr a...
In this paper we describe the theoretical background and practical application of QNA-MC (Queueing Network Analyzer supporting MultiCast), a tool for the analytical evaluation of multicast protocols. QNA-MC is based on the QNA tool which (approximately) analyses open networks consisting of GI|G|m nodes. While the input of the standard QNA tool is restricted to non-deterministic (probabilistic) ...
Abstract Multi-carrier direct sequence code division multiple access (MC DS-CDMA) is a combination of time-domain spreading and orthogonal frequency division multiplexing (OFDM), while multi-carrier code division multiple access (MC-CDMA) is a combination of frequency-domain spreading and OFDM. In MC-CDMA, a good bit error rate (BER) performance can be achieved by using frequency-domain equaliz...
This article presents the methodology we have developed for the simulation of hydrogen transfer reactions, including multiple proton transfer and proton-coupled electron transfer reactions. The central method discussed is molecular dynamics with quantum transitions (MDQT), which is a mixed quantum/classical surface hopping method that incorporates nonadiabatic transitions between the proton vib...
Multi-carrier Code Division Multiple Access (MC-CDMA) has been an attractive technique for wireless communication because it offers high data rate, high spectral efficiency, large system capacity, less transmit power and less implementation complexity. But due to Carrier Frequency Offset (CFO), which comes into account due to asynchrony between transmitter and receiver local oscillators or by D...
Orthogonal multi-carrier direct sequence code division multiple access (orthogonal MC DS-CDMA) is a combination of orthogonal frequency division multiplexing (OFDM) and time-domain spreading, while multi-carrier code division multiple access (MC-CDMA) is a combination of OFDM and frequency-domain spreading. In MC-CDMA, a good bit error rate (BER) performance can be achieved by using frequencydo...
A fundamental challenge in wireless multicast hasbeen how to simultaneously achieve high-throughput and low-delay for reliably serving a large number of users. In this paper,we show how to harness substantial throughput and delay gainsby exploiting multi-channel resources. We develop a new schemecalled Multi-Channel Moving Window Codes (MC-MWC) formulti-channel multi-ses...
background: gold nanoparticles (gnps) have been shown as a good radiosensitizer. in combination with radiotherapy, several studies with orthovoltage x-rays have shown considerable dose enhancement effects. this paper reports the dose enhancement factor (def) due to gnps in 18 megavoltage (mv) beams. materials and methods: different geometrical 50-nm gnps configurations at a concentration of 5 m...
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