A Poisson equation on a rectangular domain is solved by coupling two methods: the domain is divided in two squares; a finite element approximation is used on the first square and a spectral discretization is used on the second. Two kinds of matching conditions on the interface are presented and compared; in both cases, error estimates are proved.

mazandaran province is one of the most important agricultural areas in iran. researches findings show that the role of bank credits is really important due to the lack of available funds in agricultural sector. in this study, the relationship between allocation of agricultural bank credits of iran as professional bank section and agricultural employment was studied in the mazandaran province ba...

We apply a look-up table technique to calibrate both position and orientation readings from a magnetic tracker for use in virtual environments within a defined working volume. In a test volume of 2.4 cubic meters, the method reduced the tracker’s average position error by 79% and its average orientation error by 40%. We test the correction table against the tracker’s performance outdoors (a met...

background: in treating patients with radiation, the degree of accuracy for the delivery of tumor dose is recommended to be within ± 5% by icru in report 24. the experimental studies have shown that the presence of low-density inhomogeneity in areas such as the lung can lead to a greater than 30% change in the water dose data. therefore, inhomogeneity corrections should be used in treatment pla...

One of the most widely used method of error detection and correction is Single Error Correction and Double Error Detection (SEC-DED) code. With any technology, there is a danger that information will be corrupted due to physical imperfections in storage media or electronic noise. So it is necessary to detect and correct such an erroneous data during transmission. Error detection and correction ...

The method of testing points generation for identification and correction of integral nonlinearity of high performance ADC is developed. The proposed method is based on averaging all voltages of multi-resistors voltage divider. The main idea of proposed method is in comparison results of analog to digital conversion obtained on different ranges of tested ADC for the same input signals. It is in...

assumption of exchange rate overshooting has significant position in international macroeconomic discussion. this phenomenon is one of the abnormal behaviors of exchange rate that happen in short run. dornbusch (1976) shows that because speed of equilibrium prices is slow relative to asset markets and commodity prices are sticky in the short run, however, over time, commodity prices will rise a...

introduction: today, lasik surgery is one of the most common and effective procedures for correction of refractive errors. less than 1% of patients undergoing lasik operation suffer from serious and 3-5% suffers from mild complications. also, results of lasik in most centers are promising. with the recent inauguration of the lasik center of yazd, it was decided to evaluate the results and compl...

This paper focuses on an optimal quadrature error correction method for the dual-mass MEMS gyroscope, in order to reduce the long term bias drift. It is known that the coupling stiffness and demodulation error are important elements causing bias drift. The coupling stiffness in dual-mass structures is analyzed. The experiment proves that the left and right masses' quadrature errors are differen...