This paper proposes one integer frequency offset estimation algorithm for orthogonal frequency division multiplexing (OFDM) based digital radio mondiale (DRM) system. The algorithm exploits the correlation of frequency pilots to construct a novel angle vector. As the power factor of the pilots in the correlated calculation is inevitably disturbed by the multipath and noise, the angle vector onl...

Purpose – The purpose of this paper is to investigate how organizations perceive the impact of radio frequency identification (RFID) on business performance in relation to the perceived technology-organization fit and the perceived risk of the technology. Design/methodology/approach – A survey is conducted with professionals involved in RFID implementation initiatives in their organizations. Th...

The genetic polymorphism of some genes related to meat production in three Egyptian sheep breeds (Barki, Rahmani and Osseimi) was studied. The candidate genes were: Calpastatin, Myostatin, Diacylglycerol-acyltransferase1, Insulin-like growth factor binding protein-3 and Booroola fecundity gene. The technique applied was the restriction fragment length polymorphism for the polymerase chain react...

the modulation response, relative intensity noise and frequency noise characteristics of qd lasers are investigated theoretically, in presence of an additional optical pumping. it is revealed that the modulation response of qd laser enhances under additional optical beam. by small signal analysis of the carriers' and photons' rates, it is proposed that by injecting excess carriers to ...

Background: The average age at menarche (AAM) has declined around the world, which is widely attributed to improvements in nutrition. This study was conducted to investigate the association between dietary patterns and early menarche ( Materials and Methods: This case-control study was carried out on 400 elementary school girls (200 early mena...

This paper presents a new centralized adaptive method under frequency load shedding. Sometimes, after initial frequency drop following severe disturbances, although the system frequency returns to its permissible value, however, the system might become unstable due to voltage problems. In this regard, the paper proposes a new centralized adaptive load shedding method to enhance the voltage stab...

Dimerization process is essential for producing copolymers. The features of dimerization process like thermal-oxidative degradation should be well known to reach maximum efficiency and a superior reactor design. Also, the degradation mechanism of biodegradable polymers is important during sterilization processes. Thermal-oxidative degradation of PGA, PLLA, and their binary copolymers was invest...