For Remembering

Your wedding day will be one of the most important days in your life, one that you have planned and anticipated since you were old enough to wink at the boy across the aisle in grade school, and one that you will want to keep ever fresh in your mind even as you sit knitting in that squeaky old rocker by the fireplace fifty years from now

Parametric Deformation of Discrete Geometry for Aerodynamic Shape Design

We present a versatile discrete geometry manipulation platform for aerospace vehicle shape optimization. The platform is based on the geometry kernel of an open-source modeling tool called Blender and offers access to four parametric deformation techniques: lattice, cage-based, skeletal, and direct manipulation. Custom deformation methods are implemented as plugins, and the kernel is controlled through a scripting interface. Surface sensitivities are provided to support gradient-based optimization. The platform architecture allows the use of geometry pipelines, where multiple modelers are used in sequence, enabling manipulation difficult or impossible to achieve with a constructive modeler or deformer alone. We implement an intuitive custom deformation method in which a set of surface points serve as the design variables and user-specified constraints are intrinsically satisfied. We test our geometry platform on several design examples using an aerodynamic design framework based on Cartesian grids. We examine inverse airfoil design and shape matching and perform lift-constrained drag minimization on an airfoil with thickness constraints. A transport wing-fuselage integration problem demonstrates the approach in 3D. In a final example, our platform is pipelined with a constructive modeler to parabolically sweep a wingtip while applying a 1-G loading deformation across the wingspan. This work is an important first step towards the larger goal of leveraging the investment of the graphics industry to improve the state-of-the-art in aerospace geometry tools

sBOOM Propagation for the Second AIAA Sonic Boom Prediction Workshop

No abstract availabl

Stakeholder Perspectives about Developing and Implementing an Online Alternative to Out-of-School Suspension for First Time Substance Use Policy Violators

The purpose of this study was to explore statewide stakeholder perspectives about developing and implementing an online alternative to suspension (ATS) program in the Northwestern United States for youth who have violated school substance use policies. Out-of-school suspension has been linked to negative outcomes and alternatives to keep youth in school are desperately needed. Qualitative description methodology with content analysis was used to analyze data gathered from 201 stakeholders (principals & vice principals). Three themes were identified that described stakeholders’ perspectives about the development and implementation of an online ATS program: 1) the program must be impactful, 2) have a high degree of usability, and 3) additional support may be necessary. Themes identified can guide the development and implementation of an online ATS program. In collaboration with stakeholders, the initiation of an online ATS program could reduce out of school suspensions for middle and high school age youth

Distributed-Flap Layout Trade Study on a Highly Flexible Common Research Model

The results of a layout trade study of a full-span, trailing-edge flap system for the NASACommon Research Model (CRM) are presented. Previously developed analysis and design tools areused to determine the potential performance benefits of several flap layouts on a highlyflexible version of the aircraft wing. The wing is first re-twisted for optimal aerodynamicperformance at the design cruise condition while addressing aeroelastic effects. Several flaplayouts are then installed on the new baseline wing. The deflection of each segment on allflap layouts is then optimized for aerodynamic performance at an overspeed flight conditionto ascertain the effectiveness of each flap system. The results indicate that employing two-segmentflaps greatly improves overspeed performance as compared to using no or justsingle-segment flaps. The study also showed that additional segments offer only incrementalimprovements in performance. The results also show that using only four spanwise flaps canproduce meaningful performance gains. Overall, the trade study results suggest a simpledistributed flap system (four spanwise flaps with two segments each) can reduce the drag ofthe Common Research Model by 13 counts at a Mach number that is 3.5 percent higher than thedesign cruise point

Simulating non-Markovian stochastic processes

We present a simple and general framework to simulate statistically correct realizations of a system of non-Markovian discrete stochastic processes. We give the exact analytical solution and a practical an efficient algorithm alike the Gillespie algorithm for Markovian processes, with the difference that now the occurrence rates of the events depend on the time elapsed since the event last took place. We use our non-Markovian generalized Gillespie stochastic simulation methodology to investigate the effects of non-exponential inter-event time distributions in the susceptible-infected-susceptible model of epidemic spreading. Strikingly, our results unveil the drastic effects that very subtle differences in the modeling of non-Markovian processes have on the global behavior of complex systems, with important implications for their understanding and prediction. We also assess our generalized Gillespie algorithm on a system of biochemical reactions with time delays. As compared to other existing methods, we find that the generalized Gillespie algorithm is the most general as it can be implemented very easily in cases, like for delays coupled to the evolution of the system, where other algorithms do not work or need adapted versions, less efficient in computational terms.Comment: Improvement of the algorithm, new results, and a major reorganization of the paper thanks to our coauthors L. Lafuerza and R. Tora

The Iowa Homemaker vol.32, no.2

To a Bride, Salli Hearst, page 9 Happily Ever After, Donald C. Charles, page 10 The Bride Wore, Marilyn Bergeson and Patricia Keast, page 11 Here Comes the Bride, Marilyn Wright, page 12 Marriage and College - Yes, Gloria Sheehe, page 13 It’s All In the Family, Floramae Gates, page 14 With This Ring, Jean McGhie, page 15 Veiled In Loveliness, Evelyn Toulouse, page 16 Pots ‘n Pans, Maryann Meldrum, page 17 Proper Thing To Do, Marian Skinner, page 18 For Remembering, Marian Anderson, page 19 Weddings Without Worries, Nancy Voss, page 20 Showers, Joanne Ryals, page 21 Your Highest Hopes, Gayle Dunn, page 22 Bouquet for You, Maryann Meldrum, page 23 Your Trip to the Moon, Alane Baird, page 24 What’s New, Evelyn Toulouse and Dorothy Will, page 28 Information Please, Susan Brown and Mary Doherty, page 32 She Doesn’t Like Surprises and Neither Does He, Ruth Anderson, page 34 Breaking In the Groom, Alice Irvine, page 37 Trends, Joanne Ryals, page 3