Verification and Validation of the General Mission Analysis Tool (GMAT)

This paper describes the processes and results of Verification and Validation (V&V) efforts for the General Mission Analysis Tool (GMAT). We describe the test program and environments, the tools used for independent test data, and comparison results. The V&V effort produced approximately 13,000 test scripts that are run as part of the nightly buildtest process. In addition, we created approximately 3000 automated GUI tests that are run every two weeks. Presenting all test results are beyond the scope of a single paper. Here we present high-level test results in most areas, and detailed test results for key areas. The final product of the V&V effort presented in this paper was GMAT version R2013a, the first Gold release of the software with completely updated documentation and greatly improved quality. Release R2013a was the staging release for flight qualification performed at Goddard Space Flight Center (GSFC) ultimately resulting in GMAT version R2013b

The Grizzly, September 28, 1989

Berman Art Center Ready to Roll • New Forum Frontier to be Forged • Letter: Granite Windows Grosses Grad • Stern Happy at Ursinus • Bear Pack Run: Join Us! • Bush Wacked at Drug Dialog • Security New Park Patrol • Wellness Days! • Crutcher Leads Lady Bears to Win • Ursinus Nipped by WMC • Soccer: So-So • V-ball: Optimistic View • Athletes of the Week • Hallinger Competes on Wheels • Calliope Blast from Pasthttps://digitalcommons.ursinus.edu/grizzlynews/1242/thumbnail.jp

The Grizzly, October 20, 1989

Student Day a Success • Lynk Speaks On Acquaintance Rape • Letters: Homecoming Letter; Shaped Up! • Wismer Work Beats Kennel • Greenpeace Fights for Nature • Voice for Choice to be Heard • L\u27Bears Teamwork Pays Off • Gettysburg Meets Waterloo • Harriers Succeed Despite Setbacks • Swimmers Look to Season • Athletes of the Week • Confrontation: Not Richter • Esther: Et tu Wismer?https://digitalcommons.ursinus.edu/grizzlynews/1244/thumbnail.jp

The Grizzly, April 14, 1992

Ursinus Chooses Its Leaders • Viking Fiasco • Sieger Speaks • Economics Conference Held, Gilmour Wins Top Award • Songfest 1992 • Room Selection and Housing Update • The Perfect Day in Upper Perk • Carrot Top Captivates Crowd • Metallica Mosh Mania • French Speaks on Beethoven • The Sensual Sunbathers and Condom Machines • Choir Sings • Grubb\u27s Last Word • Viking Fest: The Other Side • Opinions Section Seeks New Assistants • Letter: What\u27s Done is Done • Men\u27s Lacrosse Starts Season with Three Straight Wins • Six UC Athletes Named Academic All-Conference • Baseball Wins Two Out of Threehttps://digitalcommons.ursinus.edu/grizzlynews/1295/thumbnail.jp

Field evaluation of crushed glass-dredged material blends

Journal of Geotechnical and Geoenvironmental Engineering, 133(1): pp. 127-128.Based on the laboratory results reported in a companion paper, three crushed glass–dredged material CG–DM blends were prepared and evaluated in the field to explore the feasibility of using CG–DM blends in general, embankment and structural fill applications. A trailer-mounted pugmill successfully prepared 20/ 80, 50/ 50, and 80/20 CG–DM blends dry weight percent CG content reported first within a tolerance of ±5 dry % by weight of the targeted percentages. Blending criteria were routinely met at pugmill throughputs up to 1,500 m3 / day. The constructed 20/80 CG–DM embankment was compacted to a minimum of 90% modified Proctor compaction, whereas the 50/50 and 80/20 CG–DM embankments were constructed to a minimum of 95% modified Proctor compaction. Twenty to 80% CG addition to DM resulted in 1.5–5.5 kN/m3 increases in field dry densities above 100% DM, densities not achievable with other DM stabilization techniques such as Portland cement, fly ash, and/or lime PC/FA/lime addition. CG substantially improved the workability of DM allowing construction with conventional equipment and three person crew while achieving very consistent and reproducible results during a timeline of frequent and heavy precipitation events. The 20/ 80, 50/ 50, and 80/20 CG–DM embankments were characterized by average cone tip resistances on the order of 1.0, 1.5, and 2.0 MPa, respectively. An environmental evaluation of 100% CG, DM and 50/50 CG–DM blend samples coupled with an economic analysis of a scaled-up commercial application illustrated that the CG–DM blending approach is potentially more cost effective than PC/FA/lime stabilization approaches. These features of CG–DM blending make the process attractive for use in urban and industrial settings

The Grizzly, September 22, 1989

Kane Claiming Greeks Shall Survive • Olin Noise Annoys All • Letters: Boot Booze Begs Senior; Rovers Rotten • DiFeliciantonio: A Mouthful • McNulty Directs Residents • Surprise, surprise! UC Stomps Swarthmore • Ursinus Closes Gap with F&M Diplomats • Commentary; Why Bush War Can\u27t be Won; HPER Lab a Strong Addition • Intramurals: Full Steam Ahead! • One Giant Step • Sports Summary • Pledging: End of an Era? • BWC Causes Electrical Overloadhttps://digitalcommons.ursinus.edu/grizzlynews/1241/thumbnail.jp

The Grizzly, February 2, 1990

Bio-gate Break-in Has Faculty Bugged • Wismer Transforms: Are We Impressed?! • Letter: Find Something New, GDI! • Townies Lay Reimert Siege • Updike Displayed • Meyer Enjoys U.C. • Ursinus Aquabears Sink E-Town and WMC • Runners Watch Their Step • Hoops Rebound! • Women on Track • Coach Lambdin Taking Charge • In U.C. We Trust • Ursinus Going Smoke Free? • Faculty Recital • Dean Lucas Excites Academicshttps://digitalcommons.ursinus.edu/grizzlynews/1250/thumbnail.jp