Political Affiliation of College Youth

Sampling of ISU students shows 35 percent regard themselves as Independents, 33 percent Republicans, 31 percent Democrats. Parental affiliation and class background are important influences

Iowa County Government Reorganization - Pros and Cons

Proponents believe county government reorganization would bring greater efficiency and lower local government costs. Opponents fear reduction in grass roots control of local services

Alien Registration- Wiggins, Lambert W. (Mars Hill, Aroostook County)

https://digitalmaine.com/alien_docs/34126/thumbnail.jp

Balance sheet and cash flow (two

"1/80/8M (revision SF15)""Would you like to obtain more income from your farming operation? If you're like most farm families your answer is yes. But you may be thinking you'd have to spend money in order to make more income and you're not sure if you can afford it. These same questions face most farm families. These two financial management tools can be useful in deciding if you can afford to make certain investments."--First page.Ed Wiggins and W. W. Thomas (Department of Agricultural Economics, College of Agriculture

A Computational Procedure to Detect a New Type of High Dimensional Chaotic Saddle and its Application to the 3-D Hill's Problem

A computational procedure that allows the detection of a new type of high-dimensional chaotic saddle in Hamiltonian systems with three degrees of freedom is presented. The chaotic saddle is associated with a so-called normally hyperbolic invariant manifold (NHIM). The procedure allows to compute appropriate homoclinic orbits to the NHIM from which we can infer the existence a chaotic saddle. NHIMs control the phase space transport across an equilibrium point of saddle-centre-...-centre stability type, which is a fundamental mechanism for chemical reactions, capture and escape, scattering, and, more generally, ``transformation'' in many different areas of physics. Consequently, the presented methods and results are of broad interest. The procedure is illustrated for the spatial Hill's problem which is a well known model in celestial mechanics and which gained much interest e.g. in the study of the formation of binaries in the Kuiper belt.Comment: 12 pages, 6 figures, pdflatex, submitted to JPhys

Magma migration and magmatic solitary waves in 3-D

Numerical studies of fluid flow in the mantle suggest that magma migration is an inherently time-dependent process that produces magmatic solitary waves from obstructions in melt flux. Previous work has considered one and two dimensional problems. Here we present the results of three dimensional calculations that utilize a new, efficient multigrid scheme. We demonstrate that one and two dimensional solitary waves are unstable and break up into sets of 3-D solitary waves which are perfectly spherical when propagating through a uniform porosity medium. While these waves are not solitons, their non-linear interactions are qualitatively similar. The solitary waves are highly opportunistic and establish efficient pathways for migration by linking up with nearby waves. When the initial condition is a random distribution of porosity, the porosity structure can organize into elongate, time-dependent channels formed from chains of solitary waves. These results are natural consequences of the assumptions that the matrix is permeable and viscously deformable. We suggest that solitary waves are likely to exist in the mantle and may contribute to the episodicity of mantle magmatism