State-Directed Political Protest in US Capital Cities: 1998-2001

Using a new dataset, we analyze four years of political protest events in US state capitals, in order to specify the processes and possibilities for collective action at the state level. Drawing from resource mobilization/political process theory, we test hypotheses regarding density of activist communities, political culture, social capital, administrative capacities, and political processes in affecting the number of protests, rallies, and demonstrations directed at state government. We find that the most important factors include the density of contentious communities of individuals (specifically university students), political culture, Democratic Party control of government, and the option to use direct legislation (a negative effect), while administrative capacity, generalized social capital, and party competition have no effects. We also find strong positive baseline effects for the population size of the state, the relative importance of the capital compared to other cities, and urbanization. We argue that these findings illustrate how aggregate levels of state-level political protest arise out of collective action processes and the mobilization of small groups, as mediated through stable cultural repertoires of political tactics and moderated by certain political opportunities and processes.This publication is Hauser Center Working Paper No. 13. The Hauser Center Working Paper Series was launched during the summer of 2000. The Series enables the Hauser Center to share with a broad audience important works-in-progress written by Hauser Center scholars and researchers

Phase behaviour and dynamics in primitive models of molecular ionic liquids

The phase behaviour and dynamics of molecular ionic liquids are studied using primitive models and extensive computer simulations. The models account for size disparity between cation and anion, charge location on the cation, and cation-shape anisotropy, which are all prominent features of important materials such as room-temperature ionic liquids. The vapour-liquid phase diagrams are determined using high-precision Monte Carlo simulations, setting the scene for in-depth studies of ion dynamics in the liquid state. Molecular dynamics simulations are used to explore the structure, single-particle translational and rotational autocorrelation functions, cation orientational autocorrelations, self diffusion, viscosity, and frequency-dependent conductivity. The results reveal some of the molecular-scale mechanisms for charge transport, involving molecular translation, rotation, and association.Comment: 15 pages, 7 figure

Two-dimensional structure in a generic model of triangular proteins and protein trimers

Motivated by the diversity and complexity of two-dimensional crystals formed by triangular proteins and protein trimers, we have investigated the structures and phase behavior of hard-disk trimers. In order to mimic specific binding interactions, each trimer possesses on `attractive' disk which can interact with similar disks on other trimers via an attractive square-well potential. At low density and low temperature, the fluid phase mainly consists of tetramers, pentamers, or hexamers. Hexamers provide the structural motif for a high-density, low-temperature periodic solid phase, but we also identify a metastable periodic structure based on a tetramer motif. At high density there is a transition between orientationally ordered and disordered solid phases. The connections between simulated structures and those of 2D protein crystals -- as seen in electron microscopy -- are briefly discussed.Comment: 7 pages, 6 figure

Maxometers (peak wind speed anemometers)

An instrument for measuring peak wind speeds under severe environmental conditions is described, comprising an elongated cylinder housed in an outer casing. The cylinder contains a piston attached to a longitudinally movable guided rod having a pressure disk mounted on one projecting end. Wind pressure against the pressure disk depresses the movable rod. When the wind reaches its maximum speed, the rod is locked by a ball clutch mechanism in the position of maximum inward movement. Thereafter maximum wind speed or pressure readings may be taken from calibrated indexing means

Transient cavities and the excess chemical potentials of hard-spheroid solutes in dipolar hard sphere solvents

Monte Carlo computer simulations are used to study transient cavities and the solvation of hard-spheroid solutes in dipolar hard sphere solvents. The probability distribution of spheroidal cavities in the solvent is shown to be well described by a Gaussian function, and the variations of fit parameters with cavity elongation and solvent properties are analyzed. The excess chemical potentials of hard-spheroid solutes with aspect ratios $x$ in the range $1/5 \leq x \leq 5$, and with volumes between one and twenty times that of a solvent molecule, are presented. It is shown that for a given molecular volume and solvent dipole moment (or temperature) a spherical solute has the lowest excess chemical potential and hence the highest solubility, while a prolate solute with aspect ratio $x$ should be more soluble than an oblate solute with aspect ratio $1/x$. For a given solute molecule, the excess chemical potential increases with increasing temperature; this same trend is observed in the case of hydrophobic solvation. To help interpret the simulation results, comparison is made with a scaled-particle theory that requires prior knowledge of a solute-solvent interfacial tension and the pure-solvent equation of state, which parameters are obtained from simulation results for spherical solutes. The theory shows excellent agreement with simulation results over the whole range of solute elongations considered.Comment: 10 pages, 10 figure

Arm cavity resonant sideband control for laser interferometric gravitational wave detectors

We present a new optical control scheme for a laser interferometric gravitational wave detector that has a high degree of tolerance to interferometer spatial distortions and noise on the input light. The scheme involves resonating the rf sidebands in an interferometer arm cavity

Catlow Twine Basketry through Time and Space: Exploring Shifting Cultural Boundaries through Prehistoric and Ethnographic Basketry Technology in the Northwestern Great Basin

In this dissertation, I focus on Catlow Twine basketry and address several questions about connections between prehistoric and ethnographic groups in the Great Basin and how and when prehistoric populations moved across the landscape. My results suggest that: (1) diagnostic basketry types in the northwestern Great Basin can be used to track different ethnolinguistic groups through time and space; (2) continuity in technological attributes of Catlow Twine basketry suggests an early and widespread occupation of Penutian speaking groups in the northwestern Great Basin; and (3) the technological relationship between Catlow Twine and ethnographic Klamath-Modoc basketry reflects continuity in basket making traditions that was severely disrupted by contact with Euro-American settlers and the sale of Native American basketry during the Arts and Crafts Period (1880-1920)