When designing input stage,in order to enable the input common mode voltage range to achieve rail-to-rail,it does not use the traditional differential input pair,but use the NMOS tube and the PMOS tube parallel supplementary differential input pair to the structure,and uses the proportional current mirror technology to realize the constant transconductance of input stage.
We demonstrate that, with the addition of a proportional cost, it is possible to compute an optimal CVaR derivative investment portfolio with significantly fewer instruments and comparable CVaR and VaR.
Based on the state of the population distribution in Hebei Province,using scientific random sampling method (PPS——proportional to scale propability sampling),the samples collected 683,from 28 villages(subdistrict offices),7 Counties in Hebei Province,the public environmental awareness was surveyed.
This paper considers an SIRS epidemic model that incorporates constant immigration rate, a general population-size dependent contact rate and proportional transfer rate from the infective class to susceptible class.
For both variants the better ratios can be obtained if the problem satisfies proportional assumption.
Foreign currency option pricing with proportional transaction costs
The purpose of present work is to examine the financial problem of finding the universal reservation prices of a European call option written on exchange rate when there is proportional transaction costs of trading foreign currency in the market.
The peak current was proportional to the concentration of calcium in the range of 5.0×10-8-4.2×10-5 mol L-1.