There are also a number of programs, such as Diskcopy, Virtual Floppy Drive (VFD) and Floppy Image Creator, that can create a virtual floppy in the absence of a physical disk (or, possibly, the absence of a computer with a floppy disk drive).
(dÄ­fâ²Ér) intr.v. difÂ·fered, difÂ·ferÂ·ing, difÂ·fers. 1. To be dissimilar or unlike in nature, quality, amount, or form: Ambition differs from greed. 2. To be of a different opinion; disagree: The experts differ on what should be done to fix the economy.
Difference in differences. From Wikipedia, the free encyclopedia. Difference in differences (sometimes 'Difference-in-Differences', 'DID', or 'DD') is a statistical technique used in econometrics and quantitative sociology, which attempts to mimic an experimental research design using observational study data.t calculates the effect of a treatment (i.e., an explanatory variable or an independent variable) on an outcome (i.e., a response variable or dependent variable) by comparing the average change over time in the outcome variable for the treatment group to the average change over time for the control group.