The results indicate that the predicted values of these three models are not accurate enough for Daqing oil. When the absolute value of the relative deviation between calculated values and measured data is less than 10%, the data frequencies are 20%,30% and 43% for Standing's, Lasater's and Vasquez-Beggs' models respectively.

A high-speed acquisition and analysis system based on USB was introduced in this paper. It utilized one piece of 8254 and two pieces of MAX1090s to acquire the following data: frequencies from three channels and analog signals from sixteen channels,then transmitted them to PC via FT245BM.

This paper compares the performance of alternative models of east Asian exchange rates at different data frequencies.

An Assessment of Empirical Model Performance When Financial Market Transactions are Observed at Different Data Frequencies: An A

The substitution model, however, is adjusted so that the equilibrium frequencies are the data frequencies.

The cable specification was confirmed as being nominally 110 ohms at data frequencies.

This area of feature space represents high data frequencies within the scenes concerned.

Predicting models for gas-oil ratio of reservoir oil, which were put forward by Standing, Lasater, and Vasquez-Beggs respectively, have been verified by the PVT parameters of oil from 30 exploration wells in Daqing Oilfield. The results indicate that the predicted values of these three models are not accurate enough for Daqing oil. When the absolute value of the relative deviation between calculated values and measured data is less than 10%, the data frequencies are 20%,30% and 43% for Standing's, Lasater's...

Predicting models for gas-oil ratio of reservoir oil, which were put forward by Standing, Lasater, and Vasquez-Beggs respectively, have been verified by the PVT parameters of oil from 30 exploration wells in Daqing Oilfield. The results indicate that the predicted values of these three models are not accurate enough for Daqing oil. When the absolute value of the relative deviation between calculated values and measured data is less than 10%, the data frequencies are 20%,30% and 43% for Standing's, Lasater's and Vasquez-Beggs' models respectively. And when the absolute value of the relative deviation is larger than 100% the data frequencies are 16.7%, 6.7% and 10.0% respectively. Vasquez-Beggs model is more accurate than the other two. But because two constant coefficients have been used it results in the discontinuity of relation curve of R_s vs. API gravity of oil, therefore, the calculated values of the model reveal unreasonable results. Based on the analysis of the cause of deviation, we find that there is great difference between marine and continental crude oil. We may conclude that it is not reasonable to use only a relative density to express properties of gas.

A high-speed acquisition and analysis system based on USB was introduced in this paper.It utilized one piece of 8254 and two pieces of MAX1090s to acquire the following data: frequencies from three channels and analog signals from sixteen channels,then transmitted them to PC via FT245BM.Finally,according to three different ways of time,distance and outer trigger,PC utilized various parameters that have been set in advance,to process these data in visual way,and stored the result into database.The...

A high-speed acquisition and analysis system based on USB was introduced in this paper.It utilized one piece of 8254 and two pieces of MAX1090s to acquire the following data: frequencies from three channels and analog signals from sixteen channels,then transmitted them to PC via FT245BM.Finally,according to three different ways of time,distance and outer trigger,PC utilized various parameters that have been set in advance,to process these data in visual way,and stored the result into database.The three modules of data acquisition,communication and analysis can work under parallel order.