Disclaimer: Best effort has been made in the preparation of this report. However, NanoDotTek™ makes no representations or warranties with respect to the accuracy or completeness of the contents of this report, and specifically disclaims any implied warranties of merchantability or fitness for any purpose. NanoDotTek™ shall not be liable for any loss of profit or any other commercial damages, in...

In this paper a multiband UWB signal with polarization diversity is considered in order to maintain as constant as possibile the performance (and consequently the QoS) of a short range communication link.

In this paper we propose a tick time model for dealer quote interactions using ultra-high-frequency data. We include duration functions to measure the time dependence of volatility as well as information. In order to asses price discovery we define several measures in tick time. These measures can be aggregated to calender time and we define a comparative measure to Hasbrouck (1995) information...

The ultra-wideband wireless personal area networks are expected to be most commonly employed in desktop environments. This paper presents a measurement campaign conducted on a typical office desk. A pair of omnidirectional UWB antennas and a vector network analyzer were used to measure the impulse responses over a frequency range spanning from 6 GHz to 8.5 GHz, in accordance with the UWB regula...

OBJECTIVE To assess beliefs about the tar and nicotine delivery characteristics and health benefits of Light and Ultra Light cigarettes among cigarette smokers. DESIGN Random digit dialed telephone survey conducted in September 1999. SUBJECTS Daily smokers (n = 2120) of Regular (46%), Light (39%), and Ultra Light (15%) cigarettes in the USA. The sample was weighted to match the US smoker po...

Millions of ultra-poor households in sub-Saharan Africa rely exclusively on savings groups to meet their financial needs. However, the ability of savings groups to fully meet these needs remains unclear. We randomly assign ultra-poor Ugandan households to savings groups containing different proportions of ultra-poor members. We find evidence that groups may be unable to satisfy the borrowing ne...