University of Wisconsin–Eau Claire

About: University of Wisconsin–Eau Claire is a education organization based out in Eau Claire, Wisconsin, United States. It is known for research contribution in the topics: Poison control & Population. The organization has 1780 authors who have published 2690 publications receiving 93094 citations. The organization is also known as: UW-Eau Claire & University of Wisconsin-Eau Claire.

GPR in sediments: advice on data collection, basic processing and interpretation, a good practice guide

Abstract: Within sedimentological studies, ground penetrating radar (GPR) is being used with increasing frequency because it yields images of the shallow subsurface that cannot be achieved by any other non-destructive method. The purpose of this paper is to provide an introduction to the collection, processing and interpretation of GPR data so that future sedimentary studies can be improved. With GPR equipment now being lightweight, robust and portable, proper data collection and survey design methods need to be followed in order to acquire high resolution, subsurface digital data. Various factors are discussed including: Reflection profiling, velocity soundings, test surveys, topography, logistics, data quality and extreme environments. Basic data processing and visualization are then reviewed, followed by a discussion on GPR interpretation strategies including a background to radar stratigraphy. For the sedimentary geologist or geomorphologist, GPR offers unique data of the shallow subsurface including stratigraphy, geometry, architecture and structure.

U-Th-Pb geochronology of the Coast Mountains batholith in north-coastal British Columbia: Constraints on age and tectonic evolution

Abstract: Previously published and new U-Pb geochronologic analyses provide 313 zircon and 59 titanite ages that constrain the igneous and cooling history of the Coast Mountains batholith in north-coastal British Columbia. First-order findings are as follows: (1) This segment of the batholith consists of three portions: a western magmatic belt (emplaced into the outboard Alexander and Wrangellia terranes) that was active 177–162 Ma, 157–142 Ma, and 118–100 Ma; an eastern belt (emplaced into the inboard Stikine and Yukon-Tanana terranes) that was active ca. 180–110 Ma; and a 100–50 Ma belt that was emplaced across much of the orogen during and following mid-Cretaceous juxtaposition of outboard and inboard terranes. (2) Magmatism migrated eastward from 120 to 80 (or 60) Ma at a rate of 2.0–2.7 km/Ma, a rate similar to that recorded by the Sierra Nevada batholith. (3) Magmatic flux was quite variable through time, with high (>35–50 km 3 /Ma per km strike length) flux at 160–140 Ma, 120–78 Ma, and 55–48 Ma, and magmatic lulls at 140–120 Ma and 78–55 Ma. (4) High U/Th values record widespread growth (and/or recrystallization) of metamorphic zircon at 88–76 Ma and 62–52 Ma. (5) U-Pb ages of titanite record rapid cooling of axial portions of the batholith at ca. 55–48 Ma in response to east-side-down motion on regional extensional structures. (6) The magmatic history of this portion of the Coast Mountains batholith is consistent with a tectonic model involving formation of a Late Jurassic–earliest Cretaceous magmatic arc along the northern Cordilleran margin; duplication of this arc system in Early Cretaceous time by >800 km (perhaps 1000–1200 km) of sinistral motion (bringing the northern portion outboard of the southern portion); high-flux magmatism prior to and during orthogonal mid-Cretaceous terrane accretion; low-flux magmatism during Late Cretaceous–Paleocene dextral transpressional motion; and high-flux Eocene magmatism during rapid exhumation in a regime of regional crustal extension.

Fast Fourier Transforms

Abstract: Basic aspects of fourier series definition of fourier series examples of fourier series fourier series of real functions pointwise convergence of fourier series further aspects of convergence of fourier series fourier sine series and cosine series convergence of fourier sine and cosine series the discrete fourier transform (DFT) the fast fourier transform (FFT) some applications of fourier series fourier transforms properties of fourier transforms inversion of fourier transforms convolution - an introduction the convolution theorem an application of convolution in quantum mechanics filtering, frequency detection, and removal of noise summation kernals arising from poisson summation fourier optics fresnel diffraction fraunhofer diffraction circular apertures the phase transformation induced by a thin lens imaging with a single lens user's manual for fourier analysis software some computer programmes the schwarz inequality.

Promise breaking during radical organizational change: do justice interventions make a difference?

Abstract: Previous research examining the relationship between organizational justice perceptions and reactions to psychological contract breach has not considered how the type of outcome being breached may influence the effects that procedural and interactional justice have in determining employee responses. By delineating between intrinsic (e.g., autonomy) and extrinsic (e.g., pay) contract breaches, this study attempts to clarify the differential roles of procedural and interactional justice. As expected, results revealed that procedural justice has a significant effect on responses to breaches of extrinsic outcomes while interactional justice significantly affects employee responses to breaches of intrinsic outcomes. Specifically, significant two-way interactions between extrinsic contract breach and procedural justice showed that job satisfaction, in-role job performance, and organizational citizenship behavior were lower and intentions to leave were higher when procedural justice was perceived to be low following an extrinsic contract breach. Furthermore, significant two-way interactions between intrinsic contract breach and interactional justice revealed that job satisfaction, in-role job performance, and organizational citizenship behavior directed toward other individuals were lower and intentions to leave were higher when interactional justice was perceived to be low following an intrinsic contract breach. Implications of the differential roles of procedural and interactional justice are discussed. Copyright © 2002 John Wiley & Sons, Ltd.

Measuring the impact of a university first-year experience program on student GPA and retention

Abstract: In 1997 a medium-size Midwestern public university in the U.S. initiated a first year experience program. The program is designed to infuse added curricular and extracurricular components into core courses in an effort to integrate students into the university community. This article examined the FYE impact on grade point average (GPA) and retention after 1 year for the fall 2006 cohort of entering students. The findings suggest no positive FYE effect on retention, but on average FYE students earned higher GPAs than non-FYE students. Reducing the sample to include only courses identified as goal compatible FYE courses yielded a positive effect on retention and also accentuated the GPA differential. The estimated positive FYE impact on retention was larger for below average students (especially females) and smaller for above average students.