Managing a Farm in the Corn Borer Area

PDF pages: 2

Agent-based Investigation of Price Inflation In Health Insurance

Frech-Ginsburg showed that medical insurance reimbursement systems with certain price-control characteristics cause chronic price inflation. We construct a three-party market in which Experts, Non-Experts and Insurers negotiate with each other for services, insurance coverage and cash in such a way that we can observe prices over successive rounds of negotiations and observe whether or not they show inflationary tendencies. We use agent-based software to simulate the agents. We find that three-party transactions between Insurer-Expert-Non-Expert show inflationary tendencies, but two-party transactions between Experts and Non-Experts do not. The findings suggest that institutional sources of price inflation can exist based on the order of negotiations when there is an intermediary between consumer and supplier. Inflation rates appear sensitive to the number of negotiations in each round

Automated data acquisition and reduction system for torsional braid analyzer

Automated Data Acquisition and Reduction System (ADAR) evaluates damping coefficient and relative rigidity by storing four successive peaks of waveform and time period between two successive peaks. Damping coefficient and relative rigidity are then calculated and plotted against temperature or time in real time

Constructing Invariant Subspaces as Kernels of Commuting Matrices

Given an n by n matrix A over the complex numbers and an invariant subspace L, this paper gives a straightforward formula to construct an n by n matrix N that commutes with A and has L equal to the kernel of N. For Q a matrix putting A into Jordan canonical form J = RAQ with R the inverse of Q, we get N = RM$ where the kernel of M is an invariant subspace for J with M commuting with J. In the formula M = P ZVW with V the inverse of a constructed matrix T and W the transpose of P, the matrices Z and T are m by m and P is an n by m row selection matrix. If L is a marked subspace, m = n and Z is an n by n block diagonal matrix, and if L is not a marked subspace, then m > n and Z is an m by m near-diagonal block matrix. Strikingly, each block of Z is a monomial of a finite-dimensional backward shift. Each possible form of Z is easily arranged in a lattice structure isomorphic to and thereby displaying the complete invariant subspace lattice L(A) for A.Comment: 12 pages with two illustrations of invariant subspace lattice diagram