Lunar response to the time-varying interplanetary magnetic field and application to the ALSEP magnetometer experiment

Mathematical model for predicting lunar response to time varying interplanetary magnetic fields and its applicability to interpretation of ALSEP magnetometer dat

Method for estimating the electrical conductivity of the lunar interior

Estimation method for electrical conductivity of lunar interio

Interaction of the solar wind with a planetary ionosphere

An electrodynamic model for an ionosphere-solar wind interaction is developed based on the existence of a low beta plasma below the anemopause. The currents for the interaction are driven by the solar wind motional electric field and induce a stagnation magnetic field at the anemopause. For Venus and Mars the lower region of the ionosphere near the electron density peak has the highest conductivity, and therefore the tangential component of the induction current flows substantially in this region. The current paths close in the anemopause, which is a solar wind current sheath analogous to the magnetopause. Both the fraction of the undisturbed solar wind motional electric field, which drives the induction current, and the required fraction of incident solar wind particles, crossing the anemopause to produce this current, are shown to be small

Brown-Eyed Allie

https://digitalcommons.library.umaine.edu/mmb-vp/3045/thumbnail.jp

A Prototype System for Measuring Microwave Frequency Reflections from the Breast

Microwave imaging of the breast is of interest for monitoring breast health, and approaches to active microwave imaging include tomography and radar-based methods. While the literature contains a growing body of work related to microwave breast imaging, there are only a few prototype systems that have been used to collect data from humans. In this paper, a prototype system for monostatic radar-based imaging that has been used in an initial study measuring reflections from volunteers is discussed. The performance of the system is explored by examining the mechanical positioning of sensor, as well as microwave measurement sensitivity. To gain insight into the measurement of reflected signals, simulations and measurements of a simple phantom are compared and discussed in relation to system sensitivity. Finally, a successful scan of a volunteer is described

Introduction: The Many Cultures of Walt Whitman, Part Two

Special double issue of WWQR, with selected essays from the 1998 Rutgers-Camden "Many Cultures of Walt Whitman" conference; with an "Introduction" (1-3) by the editors, and seven essays, each listed separately in this bibliography

Friction and leakage characteristics of confined, reduced-scale inflatable structures

This work is focused on the evaluation of the performance of a small-scale inflatable, or plug, placed in a confined space provided by a circular rigid pipe as a way to contain the propagation of floods. The rigid pipe is a simplified and scaled approximation of an actual tunnel section. The evaluations were conducted using an inflatable plug made of a single layer of coated Vectran® fabric. Friction coefficients of the system were calculated for three different materials lining the pipe so a comparison could be made. These friction coefficients were also compared to laboratory friction machine testing of the same lining materials. This comparison showed that the friction coefficients of the pipe-plug system were lower than the laboratory friction machine tests. Rates of water leakage around the plug were also studied. The leakage rates were recorded for several different plug pressures while varying the tunnel pressure accordingly. It was observed that as pressure differential decreased between the plug and pipe, the leakage rate increased. Results showed also that the plug was able to withstand a pressure differential with manageable water leakage rates

Developing Students' Written Communication Skills with Jupyter Notebooks

Written communication skills are considered to be highly desirable in computing graduates. However, many computing students do not have a background in which these skills have been developed, and the skills are often not well addressed within a computing curriculum. For some multidisciplinary areas, such as data science, the range of potential stakeholders makes the need for communications skills all the greater. As interest in data science increases and the technical skills of the area are in ever higher demand, understanding effective teaching and learning of these interdisciplinary aspects is receiving significant attention by academics, industry and government in an effort to address the digital skills gap. In this paper, we report on the experience of adapting a final year data science module in an undergraduate computing curriculum to help develop the skills needed for writing extended reports. From its inception, the module has used Jupyter notebooks to develop the students' skills in the coding aspects of the module. However, over several presentations, we have investigated how the cell-based structure of the notebooks can be exploited to improve the students' understanding of how to structure a report on a data investigation. We have increasingly designed the assessment for the module to take advantage of the learning affordances of Jupyter notebooks to support both raw data analysis and effective report writing. We reflect on the lessons learned from these changes to the assessment model, and the students' responses to the changes