Low-temperture electrostatic silicon-to-silicon seals using sputtered borosilicate glass

Silicon members are hermetically sealed to each other. Process produces no measurable deformation of silicon surfaces and is compatible with package designs of tight tolerance. Seals have been made with glass coatings in 10-mm to 20-mm thickness range without any prior annealing of coated silicon substrates

Space-Based Weapons—Long-Term Strategic Implications and Alternatives

Basing weapons in space might in the short term increase U.S. military capabilities, but their broader, long-term effect would be negative—especially because of likely foreign responses, inherent vulnerabilities, and crisis destabilization. A decision not to deploy weapons in space, and a treaty discouraging other nations from deploying them, would be much more in the national interest

Book Usage Is Rollin’ Down: Multifaceted Assessment of Monograph Collection Performance to Optimize Purchase Decisions

Georgia State University’s print circulation has declined over 50% since 2010. Collection development librarians made several small-scale adjustments to address this trend, yet the drop off in use continued unabated. We had to totally rethink the book budget. To make changes strategically and responsibly, we needed answers to a variety of questions: Are there disciplines that do not need firm order allocations or even monographs? Does format matter? Does it matter how the titles are acquired with regard to approval versus firm order versus demand-driven acquisition (DDA)? This paper discusses the multifaceted data-driven analysis we developed in order to provide a detailed and holistic picture of monograph collection performance and buying patterns. We share how we developed our analysis, what our data revealed, and the action items generated by our activities. This paper details how to combine large data sets from multiple sources for assessment, and how combining use and acquisitions data of print and electronic monographs helped us make improved purchasing decisions at Georgia State University

Analysis of testbed airborne multispectral scanner data from Superflux II

A test bed aircraft multispectral scanner (TBAMS) was flown during the James Shelf, Plume Scan, and Chesapeake Bay missions as part of the Superflux 2 experiment. Excellent correlations were obtained between water sample measurements of chlorophyll and sediment and TBAMS radiance data. The three-band algorithms used were insensitive to aircraft altitude and varying atmospheric conditions. This was particularly fortunate due to the hazy conditions during most of the experiments. A contour map of sediment, and also chlorophyll, was derived for the Chesapeake Bay plume along the southern Virginia-Carolina coastline. A sediment maximum occurs about 5 nautical miles off the Virginia Beach coast with a chlorophyll maximum slightly shoreward of this. During the James Shelf mission, a thermal anomaly (or front) was encountered about 50 miles from the coast. There was a minor variation in chlorophyll and sediment across the boundary. During the Chesapeake Bay mission, the Sun elevation increased from 50 degrees to over 70 degrees, interfering with the generation of data products