This paper concerns the extent to which the precedence effect is observed when leading and lagging sounds occupy different spectral regions. Subjects, listening under headphones, were asked to match the intracranial lateral position of an acoustic pointer to that of a test stimulus composed of two binaural noise bursts with asynchronous onsets, parametrically varied frequency content, and diffe...

Very often, the data we study as linguists are discrete in nature. That is, the linguistic elements we study come in different categories and, trivially, if two elements are labeled the same, they belong to the same category, and if they are labeled differently, they belong to different categories. In statistical approaches, this kind of scenario is usually described with the terminology of var...

Consider the frequency synchronization in global niobile satellite coiiiniunications systems. Let fc ( n , %: t ) be the t,raiismitt,ed ca.rrier frequency from the SAN t o the i-th user in the n-th spot bea.m, D c ( t ) be the fractional Doppler of t.he feeder link, fc6 be t,he translation frequency at. t.he sat.ellit,e, J f ( t ) be the fractional satel1it.e translation error, atid D,(n , i , ...

Radio Frequency Identification (RFID) systems are increasingly being deployed in a variety of applications. In this paper, we propose a light weight mutual authentication protocol which is an improvement over extended LMAP+ protocol. In mutual authentication, the tag and the reader of the RFID systems will authenticate each other before transmitting unique ID of tag. The proposed protocol provi...

1. INTRODUCTION When put into the magnetic field, a tiny but detectable fraction of the protons present in water in the body will align with this strong, steady magnetic field. During imaging, the tissue of interest is occasionally subjected to a brief electromagnetic radio-frequency (RF) pulse, essentially tilting the aligned protons off the axis of the main magnetic field. The protons then pr...

Radio Frequency Identification (RFID) has started to revolutionize the way today’s organizations do business. Since its highly publicized adoption by Wal-Mart, several companies have started using RFID in their supply chains with varying results. On the academic level, many new research streams have been launched concerning the applications of RFID in business. However, whether or not the acade...

Abstract: In this paper we extend the theory of Radio Frequency (RF) propagation as it relates to propagation within metal circular pipes. This work is motivated by a need to understand the operation of UHF Radio Frequency IDentification (RFID) systems when the tags are placed within the pipes. These circular pipes are shown to be similar to metal tube waveguides which are hollow. We derive the...

In signal processing, four functions of one variable are commonly used. They are the signal in time, the spectrum, the auto-correlation function of the signal, and the auto-correlation function of the spectrum. The variables of these functions are denoted, respectively, as time, frequency, lag, and doppler. In time-frequency analysis, these functions of one variable are extended to quadratic fu...

RFID technologies are currently considered a hot topic in the IT arena and have been described as a major enabling technology for automated, contactless, wireless data collection. Little is known about the perceived strategic importance of RFID among IT decision makers, current RFID usage, companies' intentions to invest in RFID and companies’ visions of RFID application. This research contribu...