This paper presents a distributed architecture for the provision of seamless and responsive mobile multimedia services. This architecture allows its user applications to use concurrently all the wireless network interface cards (NICs) a mobile terminal is equipped with. In particular, as mobile multimedia services are usually implemented using the UDP protocol, our architecture enables the tran...

Rate limiting is an important primitive for managing server network resources. Unfortunately, software-based rate limiting suffers from limited accuracy and high CPU overhead, and modern NICs only support a handful of rate limiters. We present SENIC, a NIC design that can natively support 10s of thousands of rate limiters—100x to 1000x the number available in NICs today. The key idea is that th...

One of the key concerns for practitioners and academicians is that there are almost no platforms based on analytical models for testing the impact of various architectural and design modifications for intelligent Network Interface Cards (NICs). Simulations are typically time-consuming, especially for experimenting different scenarios and what-if analysis. In this research, we study the performa...

We present a measurement study of how well 802.11n works in practice. Our goal is to understand the performance impact of the multiple antenna (spatial) techniques that are the key new capability of 802.11n. We experiment with a 10 node indoor testbed equipped with commodity Intel 802.11n NICs that have three antennas, i.e., 3x3 MIMO, and lowlevel instrumentation to let us to measure RF channel...

Monosilicon analogs of phenolates and phenylthiolates are studied by quantum chemical calculations. Three different silaphenolates and three different silaphenylthiolates are possible; the ortho-, meta-, and para-isomers. For the silaphenolates, the meta-isomer is the thermodynamically most stable, regardless if the substituent R at Si is H, t-Bu or SiMe(3). However, with R = H and SiMe(3) the ...

The stability and aromaticity of thirteen known thymine tautomers were studied in the gas phase at the B3LYP/6-311++G(2d,2p) computational level. It was found that they do not follow the Hückel 4N + 2 rule when the energetic criterion is considered, but they follow it when aromaticity indices, such as NICS, HOMA and the sum of the Wiberg bond indices, are applied. It was shown that the stabilit...

Division of Biopesticides and Environmental Toxicology, Sri Paramakalyani Centre for Environmental Sciences (SPKCES), Manonmaniam Sundaranar University, Alwarkurichi 627 412, Tirunelveli, Tamil Nadu, India Department of Rice and Winter Cereal Crop, Honam Agricultural Research Institute (HARI), National Institute of Crop Science (NICS), Rural Development Administration (RDA), #381 Songhak-dong, ...