Unmanned Multiple Exploratory Probe System (MEPS) for Mars observation. Volume 2: Calculations and derivations

This volume of the final report on the unmanned Multiple Exploratory Probe System (MEPS) details all calculations, derivations, and computer programs that support the information presented in the first volume

Unmanned Multiple Exploratory Probe System (MEPS) for Mars observation. Volume 1: Trade analysis and design

This report presents the unmanned Multiple Exploratory Probe Systems (MEPS), a space vehicle designed to observe the planet Mars in preparation for manned missions. The options considered for each major element are presented as a trade analysis, and the final vehicle design is defined

Supersonic Flight Dynamics Test 1 - Post-Flight Assessment of Simulation Performance

NASA's Low Density Supersonic Decelerator (LDSD) project conducted its first Supersonic Flight Dynamics Test (SFDT-1) on June 28, 2014. Program to Optimize Simulated Trajectories II (POST2) was one of the flight dynamics codes used to simulate and predict the flight performance and Monte Carlo analysis was used to characterize the potential flight conditions experienced by the test vehicle. This paper compares the simulation predictions with the reconstructed trajectory of SFDT-1. Additionally, off-nominal conditions seen during flight are modeled in post-flight simulations to find the primary contributors that reconcile the simulation with flight data. The results of these analyses are beneficial for the pre-flight simulation and targeting of the follow-on SFDT flights currently scheduled for summer 2015

Irreversibility of pressure induced boron speciation change in glass

It is known that the coordination number (CN) of atoms or ions in many materials increases through application of sufficiently high pressure. This also applies to glassy materials. In boron-containing glasses, trigonal BO 3 units can be transformed into tetrahedral BO 4 under pressure. However, one of the key questions is whether the pressure-quenched CN change in glass is reversible upon annealing below the ambient glass transition temperature (T g). Here we address this issue by performing 11 B NMR measurements on a soda lime borate glass that has been pressure-quenched at ∼0.6 GPa near T g. The results show a remarkable phenomenon, i.e., upon annealing at 0.9T g the pressure-induced change in CN remains unchanged, while the pressurised values of macroscopic properties such as density, refractive index, and hardness are relaxing. This suggests that the pressure-induced changes in macroscopic properties of soda lime borate glasses compressed up to ∼0.6 GPa are not attributed to changes in the short-range order in the glass, but rather to changes in overall atomic packing density and medium-range structures

Post-Flight Assessment of Low Density Supersonic Decelerator Flight Dynamics Test 2 Simulation

NASA's Low Density Supersonic Decelerator (LDSD) project conducted its second Supersonic Flight Dynamics Test (SFDT-2) on June 8, 2015. The Program to Optimize Simulated Trajectories II (POST2) was one of the flight dynamics tools used to simulate and predict the flight performance and was a major tool used in the post-flight assessment of the flight trajectory. This paper compares the simulation predictions with the reconstructed trajectory. Additionally, off-nominal conditions seen during flight are modeled in the simulation to reconcile the predictions with flight data. These analyses are beneficial to characterize the results of the flight test and to improve the simulation and targeting of the subsequent LDSD flights

Further Development of Verification Check-Cases for Six- Degree-of-Freedom Flight Vehicle Simulations

This follow-on paper describes the principal methods of implementing, and documents the results of exercising, a set of six-degree-of-freedom rigid-body equations of motion and planetary geodetic, gravitation and atmospheric models for simple vehicles in a variety of endo- and exo-atmospheric conditions with various NASA, and one popular open-source, engineering simulation tools. This effort is intended to provide an additional means of verification of flight simulations. The models used in this comparison, as well as the resulting time-history trajectory data, are available electronically for persons and organizations wishing to compare their flight simulation implementations of the same models

Combining concept mapping with semi-structured interviews: Adding another dimension to the research process

This paper provides commentary on the visual method of concept mapping and how it was combined with semi-structured interviews to study participants’ perspectives on educational leadership. Utilizing methodological literature and the author’s research, the paper outlines key characteristics of concept mapping and provides an example of how these data collection methods were combined to gain a better understanding of participants’ perspectives. Additionally, the paper describes the benefits of combining the two methods and offers several considerations for researchers adopting such an approach in their research design. Given the rising interest in visual methods the paper provides insights on how the use of concept mapping with a more traditional method can offer an added dimension to research

Understanding academic integrity education: Case studies from two Australian Universities

An increase in Academic Integrity (AI) breaches has resulted in higher education institutions implementing solutions to improve AI competence. It has been argued that to improve students’ AI understanding, concepts and skills should be taught at the classroom level and contextual factors should be considered. This article presents an investigation on how AI is taught at the classroom level across a range of disciplines, how contextual factors inform approaches to AI education, and how the approaches align with evidence-based recommendations. Purposeful sampling procedures were employed to select units of study from disciplines at two Australian universities. Qualitative data collection methods were used to capture ways AI education was approached and the collected data were analysed through grounded theory methods. The findings show that AI was primarily taught through explicit instruction and personal storytelling and assessed through summative assessment. Such approaches appear to be influenced by personal philosophies, institutional mandates and student backgrounds. While the approaches align with the notion that best practice includes an educative approach, other facets of best practice that have been promoted to combat the rise in AI breaches such as collusion, assessment outsourcing and cheating in exams were not evident

Mapping the landscape of academic integrity education programs: what approaches are effective?

Research has shown that academic integrity education programs can have a positive impact on student attitudes and reduce breaches of academic integrity. Although programs vary across institutions, there is relatively little research on their comparative efficacy. Accordingly, this study examines how higher education institutions in Australia and New Zealand approach academic integrity education in order to identify particular features that are considered to be most effective. Forty-four institutions are represented in this research, with data collected via a survey and semi-structured interviews with selected participants. The findings reveal that, in many cases, current academic integrity education programs appear to lack comprehensive information on values, the potential risks to integrity and the pitfalls of assessment outsourcing. Instead, curricula tended to focus on plagiarism, student responsibilities and referencing. Institutions employ a range of different communication and administration strategies to encourage uptake, and it was found that centrally administered programs that employed sanctions for non-completion appeared to be the most effective method for achieving compliance. Whilst the use of sanctions may support completion, it is argued that future academic integrity programs should also be collaboratively designed, drawing on a timely educational approach for skill development that incorporates learner feedback into the process with a greater emphasis on underpinning values