Sometimes a term is so apt, its meaning so clear and so relevant to our circumstances, that it becomes more than just a useful buzzword and grows to define an entire moment. “Enshittification,” coined ...

In physics, we have a bunch of constants that are used in models to explain how the world works. These are fixed numbers that we plug into equations along with our variables. For example, the ...

It's fun to think about the fundamental physical constants. These are special values used in our models of the physical universe. They include things like the speed of light, the gravitational ...

In RLM, nonlinear RNLM, OLS, GLM quasi-mle we estimate the mean model with an auxiliary variance estimator. Inference only looks at mean parameters using asymptotic orthogonality of mean and variance ...

Abstract: Control of a class of a single-input single-output systems (SISO) described by linear vector difference equations with constant but unknown parameters is discussed. The minimum variance ...

Mathematicians attended Roger Apéry’s lecture at a French National Center for Scientific Research conference in June 1978 with a great deal of skepticism. The presentation was entitled “On the ...

Estimates of factor variances observed together with negative factor correlations in CFA using the bifactor model are explored for specific characteristics. The analysis is conducted on the basis of ...