This paper is devoted to the mathematical analysis of a general recursive linearization algorithm for solving inverse medium problems with multi-frequency measurements. Under some reasonable assumptions, it is shown that the algorithm is convergent with error estimates. The work is motivated by our effort to analyze recent significant numerical results for solving inverse medium problems. Based...

The formation keeping characteristics for nonholonomic autonomous mobile robots are investigated in this paper. A novel approach of compound control is presented, which deals with the formation task based on two different algorithms: a flexible feedback linearization control algorithm and an optimal approximate target algorithm. And the algorithms are selected according to robot’s expected loca...

A digital look-up table adaptive predistortion technique using a six-port receiver for power amplifier linearization is presented. The system is designed in Ka-band for a DVB-S2 satellite link. We use a six-port receiver at the linearizationloop in place of classic heterodyne receivers. The six-port receiver is implemented by the use of passive microwavecircuits and detector diodes. This approa...

This paper is an empirical attempt to investigate bilateral trade flow between Iran and Russia. To this end, we used statistical analyses on macroeconomic series over the period of 1991-2017. Results revealed that there is a significant statistical difference in terms of exports between Iran and Russia, and that there has always been a buyer-seller dialogue between the two countries. According ...

within the early theories of fdi and multinational firms, fdi and foreign trade were considered to be substitutes. new international trade theories emphasize, however the complementary relationship between fdi and foreign trade.this is the result of introducing new aspects in the models like increasing returns to scale, product differentiation and technology-differences among nations.this paper...

from the perspective of the states that their foreign policy is based on geo-economy, the economy is the most important mechanism of influence in target areas. therefore, with the strengthening of trade relations would be in an appropriate level to increase the mutual relations.  after the independence of central eurasian states, geographical - political events of central eurasia led to the cre...

This paper analyzes the consistency of the classical extended Kalman filter (EKF) solution to the simultaneous localization and map building (SLAM) problem. Our results show that in large environments the map quickly becomes inconsistent due to linearization errors. We propose a new EKF-based SLAM algorithm, robocentric mapping, that greatly reduces linearization errors, improving map consisten...

In this paper, a method for attitude determination from vector observation suitable for Micro Aerial Vehicle application is proposed. The attitude determination algorithm is an estimator which uses a measurement equation derived from the linearization of the non-linear function which maps vectors from one coordinate frame to the other. The physical realization of the system uses Earth’s magneti...