Applying Argumentation Analysis to Assess the Quality of University Oceanography Students' Scientific Writing

This article describes the methods and results of an assessment of students' scientific writing. The study was conducted in an introductory oceanography course in a large public university that used an interactive CD-ROM entitled, "Our Dynamic Planet." The CD provided students with geological data, which they used to build written arguments regarding plate tectonics. Twenty-four student papers from this course were analyzed for quality of written arguments by using both a grading rubric and an argumentation analysis model. Three implications were drawn from these initial studies. First, there is a clear need to help students understand how to use data representations as evidence for more theoretical arguments. Second, student writers need experiences receiving critiques of their own writing and analyzing others' scientific arguments. Third, the actual grading is dependent upon the socialization of the graders themselves (in this case, graduate students). Educational levels: Graduate or professional

Letter from William Allison

Letter concerning a response to W. J. Kerr\u27s letter

Letter from William Allison

Letter concerning A. E. Wilson

Westmoreland’s War: Reassessing American Strategy in Vietnam,by Gregory Daddis

General William Westmoreland, the American commander of Military As- sistance Command Vietnam (MACV) from 1964 through 1968, remains one of the most contentious personalities of the Vietnam War, still the subject of intense debate among veterans and historians of the war. Prevalent still is the view that “Westy” could not see the forest for the trees, or vice versa, and disastrously lacked strategic vision and operational creativity owing to his parochial focus on employing Cold War “big unit” doctrine and attrition to combat an insurgent war of unification

Book Review: War in the Villages: The U.S. Marine Corps Combined Action Platoons in the Vietnam War

Author: Ted N. Easterling Reviewed by Dr. William Thomas Allison, professor of history, Georgia Southern University Published on April 20, 2023. Former Marine and Vietnam War veteran Ted Easterling evaluates the Marine Combined Action Platoons and their effectiveness, calling them an “appropriate counterinsurgency method” whose potential was squandered during the Vietnam War.https://press.armywarcollege.edu/parameters_bookshelf/1003/thumbnail.jp

Method and apparatus for using magneto-acoustic remanence to determine embrittlement

A method and apparatus for testing steel components for temperature embrittlement uses magneto-acoustic emission to nondestructively evaluate the component are presented. Acoustic emission signals occur more frequently at higher levels in embrittled components. A pair of electromagnets are used to create magnetic induction in the test component. Magneto-acoustic emission signals may be generated by applying an AC current to the electromagnets. The acoustic emission signals are analyzed to provide a comparison between a component known to be unembrittled and a test component. Magnetic remanence is determined by applying a DC current to the electromagnets and then by turning the magnets off and observing the residual magnetic induction

Quantum effects in the diffusion of hydrogen on Ru(0001)

An understanding of hydrogen diffusion on metal surfaces is important, not just for its role in heterogeneous catalysis and hydrogen fuel cell technology, but also because it provides model systems where tunneling can be studied under well-defined conditions. Here we report helium spin-echo measurements of the atomic-scale motion of hydrogen on the Ru(0001) surface between 75 and 250 K. Quantum effects are evident at temperatures as high as 200 K, while below 120 K we observe a tunneling-dominated temperature independent jump rate of 1.9$\times$10$^9$ s$^{-1}$, many orders of magnitude faster than previously seen. Quantum transition state theory calculations based on ab initio path-integral simulations reproduce the temperature dependence of the rate at higher temperatures and predict a crossover to tunneling-dominated diffusion at low temperatures, although the tunneling rate is under-estimated, highlighting the need for future experimental and theoretical studies of hydrogen diffusion on well-defined surfaces.Comment: 15 pages, 3 figure