Notes on Scale-Insects (Coccidae).—Part II

Graduate Macro Theory II: Notes on Medium Scale DSGE Models

Households in this model consume goods, supply labor, hold money, and save through both bonds and capital (the households own the capital stock). The household block is a little different from how we’ve been working thus far. We assume that there is variable utilization of capital, ut. We assume that the household chooses ut and then leases capital services, k̂t = utkt to the firms, who in turn ...

Scale insects

What are scale insects? Scale insects (Hemiptera: Sternorrhyncha: Coccoidea) are a group of small, plant feeding insects closely related to aphids and whiteflies. They are characterized by their unusual shapes, so much so that it is sometimes hard to recognize them as insects or even as animals! Adult females hardly ever move, lacking wings and often even legs. Instead of being able to run away...

Notes on Sandflies. Part II

Lecture Notes on Acoustics II

Cumulative spectral decay of a loudspeaker showing the transient behavior.

Notes on Galois Theory II

Lemma 2.1. Let F be a field, let E = F (α) be a simple extension of F , where α is algebraic over F and f = irr(α, F, x), let ψ : F → K be a homomorphism from F to a field K, and let L be an extension of K. If β ∈ L is a root of ψ(f), then there is a unique extension of ψ to a homomorphism φ : E → L such that φ(α) = β. Hence there is a bijection from the set of homomorphisms φ : E → L such that...