IEEE

Characteristic Functions of the Product of Two Gaussian Random Variables and the Product of a Gaussian and a Gamma Random Variable

Abstract: We derive the characteristic function (CF) for two product distributions—first for the product of two Gaussian random variables (RVs), where one has zero mean and unity variance, and the ...
Investopedia

Understanding Variable Overhead Spending Variance with Examples

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...
Investopedia

Fixed vs. Variable Costs: Their Impact on Gross Profit

Brian Beers is a digital editor, writer, Emmy-nominated producer, and content expert with 15+ years of experience writing about corporate finance & accounting, fundamental analysis, and investing.
How-To Geek on MSNOpinion

You need to know what the double unary operator (--) does in Excel

It's marginally more efficient: While the difference is negligible, the double-unary operator can be more efficient in ...
LRN2DIY on MSN

I discovered the secret to dual Y axes

Learn to chart multiple data sets on one graph in Excel with this concise two-minute tutorial. Explore how to utilize more than one Y Axis to effectively display different types of data together. #Exc ...
IEEE

Two-Stage Variable Proportion Coefficient Based Frequency Support of Grid-Connected DFIG-WTs

Abstract: This paper proposes a variable proportion coefficient based control scheme for the doubly-fed induction generator based wind turbines (DFIG-WTs) to implement frequency support by regulating ...