Observed and Calculated Values of the Magnetic Intensity over a Major Geologic Structure

The authors compare the observed and calculated values of the vertical and horizontal components of the magnetic field along a profile across the Los Angles Basin. A structural geologic cross section compiled from seismic, gravity and geologic data was used as a basis for calculating the magnetic field. In the San Pedro Hills portion of the cross section the calculated and observed values disagree, indicating that the granitic basement rocks lie at greater depths then shown in the structure section

Towards the theory of coherent hard dijet production on hadrons and nuclei

We carry out a detailed calculation of the cross section of pion diffraction dissociation into two jets with large transverse momenta, originating from a hard gluon exchange between the pion constituents. Both the quark and the gluon contribution are considered and in the latter case we present calculations both in covariant and in axial gauges. We find that the standard collinear factorization does not hold in this reaction. The structure of non-factorizable contributions is discussed and the results are compared with the experimental data. Our conclusion is that the existing theoretical uncertainties do not allow, for the time being, for a quantitative extraction of the pion distribution amplitude.Comment: 45 pages, latex, 17 figures, final version to appear in Nuclear Physics

Analysis of SPAR 8 single-axis levitation experiment

The melting and resolidification of SPAR 8 payload melting and resolidification of a glass specimen from the in a containerless condition and the retrieval and examination of the specimen from the. The absence of container contact was assured by use of a single-axis acoustic levitation system. However, the sample contacted a wire cage after being held without container contact by the acoustic field for only approximately 87 seconds. At this time, the sample was still molten and, therefore, flowed aroung the wire and continued to adhere to it. An analysis of why the sample did not remain levitated free of container contact is presented. The experiment is described, and experimental observations are discussed and analyzed

Higher-order corrections to the relativistic perihelion advance and the mass of binary pulsars

We study the general relativistic orbital equation and using a straightforward perturbation method and a mathematical device first introduced by d'Alembert, we work out approximate expressions of a bound planetary orbit in the form of trigonometrical polynomials and the first three terms of the power series development of the perihelion advance. The results are applied to a more precise determination of the total mass of the double pulsar J0737-3039.Comment: 8 pages. Accepted for publication in "Astrophysics & Space Science

In Defense: New York Times v. Sullivan

The article discusses the U.S. Supreme Court case New York Times v. Sullivan which deals with the actual-malice requirement, the common law of libel, and public-official and public-figure libel plaintiffs

Online Learning and the Process of Change: The Experiences of Faculty and Students at a Two-Year College

This phenomenological case study examined the process of change at a rural two-year college migrating from traditional face-to-face instruction to an online learning environment and its effect on faculty and students. Instructors and support staff were concerned about the move to online learning due to the diversity of the student body, including a large proportion of academically disadvantaged students. The institution, however, was pressured to make the change to online learning due to low enrollment and loss of state funding. Instructors were required to change to an online learning environment rapidly with little or no training or support provided by the institution. Interviews conducted with instructors, students, and tutors revealed the change process was necessary for institutional survival, despite their personal discomfort associated with the transition to online learning. As faculty progressed through the change and began receiving more institutional support and training, they developed pedagogical strategies to increase student learning outcomes in the online classroom. Additionally, due to the large proportion of academically disadvantaged students at the institution, faculty adopted support strategies to engage students and create a sense of community. Faculty and students appeared to transition successfully to online learning and teaching over the course of this study. Students, including those considered academically disadvantaged, were successful in online learning. Faculty attitudes regarding online learning changed and they grew to appreciate the opportunities it provided for students and the institution as a whole. Theoretical frameworks informing this study included theories related to institutional and individual change, effective online pedagogical practices, and community building.

A Duty to Impeach: Libel and Modern Liberalism after Dobbs

The conservative legal establishment is waging war on modern liberalism with Dobbs v. Jackson Women’s Health Organization marking its most recent victory. Against this backdrop, this Article contends that attacks from the right on New York Times Co. v. Sullivan—the Court’s defining First Amendment decision that places political speech at the center of free speech doctrine—are motivated not by bona fide doctrinal disagreements but rather the cynical belief that the specter of defamation liability unrestrained by Sullivan will silence political opponents and, in turn, hasten the end of modern liberalism. So while the battle over Sullivan may not have the same partisan salience as attacks on Roe v. Wade, the political implications of overruling Sullivan are nevertheless vast

The use of the Winograd matrix multiplication algorithm in digital multispectral processing

The Winograd procedure for matrix multiplication provides a method whereby general matrix products may be computed more efficiently than the normal method. The algorithm and the time savings that can be effected are described. A FORTRAN program is provided which performs a general matrix multiply according to this algorithm. A variation of this procedure that may be used to calculate Gaussian probability density functions is also described. It is shown how a time savings can be effected in this calculation. The extension of this method to other similar calculations should yield similar savings