power amplifiers (pas) are inherently nonlinear elements and digital predistortion is a highly cost-effective approach to linearize them. although most existing architectures assume that the pa has a memoryless nonlinearity, memory effects of the pas in many applications ,such as wideband code-division multiple access (wcdma) or orthogonal frequency-division multiplexing (ofdm), can no longer b...

in this paper, a novel control method for photovoltaic converter connection to the national gridis presented, so in addition to the injection control by solar arrays to the grid, this method cancompensate reactive power and harmonics in the load current. the system will be connected inparallel between the grid and load. the proposed system supplies all load power consumption(including active po...

a noninteracting quantum-dot arrays side coupled to a quantum wire is studied. transport through the quantum wire is investigated by using a noninteracting anderson tunneling hamiltonian. the conductance at zero temperature develops an oscillating band with resonances and antiresonances due to constructive and destructive interference in the ballistic channel, respectively. moreover, we have fo...

Objectives: Emotional regulation refers to strategies that reduce, maintain or increase an emotion in people. The purpose of this study is to standard the Cognitive Emotion Regulation Questionnaire in Tehran aged population. Methods: The sample was selected randomly from 20 Jahandidhgan associations and consisted of 500 aged people from whom 338 people remained till the end of study. In orde...

La sociología de Pareto es inseparable de su perspectiva económica, en especial su célebre teoría de las élites. Su teoría de los mercados monopólicos requiere factores extra-económicos, por lo tanto, construyó una teoría sociológica de las élites. Aquí se demuestra que su teoría sociológica general de las élites es vacua, ya que la clase de las elites es co-extensiva respecto de la población t...

In this paper, we analyze price competition in a duopolistic newspaper industry, where politically di¤erentiated newspapers compete in two distinct markets: circulation and advertising. We scrutinize the "theory of circulation spiral". This theory argues that the two-sided structure of the newspaper industry creates positive bidirectional cross-network externalities between readers and advertis...

the khorasan region is one of the active seismic zones in iranian plateau, which is located between central iran and kopet-dagh zones. we study the crustal thickness (h) and vp/vs ratio (k) in mashhad, capital of razavi khorasan province by the receiver function method. this study uses teleseismic events recorded by an array of three broadband stations of khorasan seismic network, earthquake re...

The General Packet Radio Service (GPRS) uses the GPRS Encryption Algorithm 3 (GEA3) for data encryption. In this paper, alternative hardware implementations of the GEA3 algorithm are described. GEA3 algorithm is based on the KASUMI block cipher. Various KASUMI block cipher hardware implementations have been examined in order to provide information about the required silicon area and throughput....

s from the Emerging Science Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309 Circulation Topic Review Circulation Editors’ Picks: Most Read Articles in Cardiovascular Imaging The Editors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....