Exothermic furnace module development

An exothermic furnace module was developed to rapidly heat and cool a 0.820-in. (2.1 cm) diameter by 2.75-in. (7.0 cm) long TZM molybdenum alloy crucible. The crucible contains copper, oxygen, and carbon for processing in a low-g environment. Peak temperatures of 1270 C were obtainable 3.5 min after start of ignition, and cooling below 950 C some 4.5 min later. These time-temperature relationships were conditioned for a foam-copper experiment, Space Processing Applications Rocket experiment 77-9, in a sounding rocket having a low-g period of 5 min

Resistance is Futile: Using Team Based Learning (TBL) to Teach Change and Create an Idea Champion Collective

Change is inevitable, yet resistance to change is common. Studies show that people will selectively focus on data that enables maintaining the status quo, even when overwhelming data indicates the need for change. Those who are resistant to change in their organizations often cope by ignoring the need for change or removing themselves from the organization, thus putting themselves and their organizations at a disadvantage. The ability to engage in and lead change is a practical skill set and, as such, can be taught. This workshop demonstrates how TBL is a solution to the challenge of teaching and facilitating change

E-Business for Entrepreneurs: A Turnkey Experiential Based Course for Teaching Faculty

This workshop is targeted at faculty teaching entrepreneurship courses who desire a hands-on experiential approach. Specific entrepreneurship courses that this method would apply to include, but are not limited to, introduction to entrepreneurship, opportunity analysis, and business model courses. The course materials are designed for non-technical instructors and students, but can be customized for those with significant tech skills. Each part of the e-Business model is covered individually and as an integrated part of the e-Business. Key e-Business processes are implemented and evaluated. Students come away from the course understanding how to run the online portion of a business

Folding and insertion thermodynamics of the transmembrane WALP peptide

The anchor of most integral membrane proteins consists of one or several helices spanning the lipid bilayer. The WALP peptide, GWW(LA)$_n$(L)WWA, is a common model helix to study the fundamentals of protein insertion and folding, as well as helix-helix association in the membrane. Its structural properties have been illuminated in a large number of experimental and simulation studies. In this combined coarse-grained and atomistic simulation study, we probe the thermodynamics of a single WALP peptide, focusing on both the insertion across the water-membrane interface, as well as folding in both water and a membrane. The potential of mean force characterizing the peptide's insertion into the membrane shows qualitatively similar behavior across peptides and three force fields. However, the Martini force field exhibits a pronounced secondary minimum for an adsorbed interfacial state, which may even become the global minimum---in contrast to both atomistic simulations and the alternative PLUM force field. Even though the two coarse-grained models reproduce the free energy of insertion of individual amino acids side chains, they both underestimate its corresponding value for the full peptide (as compared with atomistic simulations), hinting at cooperative physics beyond the residue level. Folding of WALP in the two environments indicates the helix as the most stable structure, though with different relative stabilities and chain-length dependence.Comment: 12 pages, 5 figure

Integrated developmental model of life-support capabilities in wheat

The objective of this project was to develop a model for CO2, O2, H2O, and nitrogen use during the life cycle of wheat. Spreadsheets and accompanying graphs were developed to illustrate plant population reactions to environmental parameters established in the Controlled Ecological Life Support System (CELSS) program at Kennedy Space Center, Fl. The spreadsheets and graphs were produced using validated biomass production chamber (BPC) data from BWT931. Conditions of the BPC during the 83 day plant growth period were as follows: The BPC area is 27.8 m(exp 2), volume is 113 m(exp 3). Temperatures during the 83 day plant growth period ranged from 16.3 to 24.8 C during the light cycle (except for day 69, when the minimum and maximum temperatures were 7.7 C and 7.9 C, respectively) and 14.5 C and 23.6 C during the dark cycle (except for day 49, when the minimum and maximum temperatures were 11.1 C and 11.3 C, respectively). Relative humidity was 85 percent for the first seven days of plant growth, and 70 percent thereafter. The plant leaf canopy area was 10 m(exp 2). Presented is a list and explanation of each spreadsheet and accompanying graph(s), conditions under which the data were collected, and formulas used to obtain each result

"Building back better": seeking an equitable return to sport-for-development in the wake of COVID-19

The COVID-19 pandemic affected sport programming by restricting in-person activities. Concurrently, global outcry for racial justice for Black and racialized communities promoted calls-to-action to assess equitable practices in sport, including Sport for Development (SfD). This study critically examined SfD ‘return to play’ programming to include perspectives from racialized persons’ lived experiences. We present findings based on data collected from MLSE Foundation’s Change the Game (CtG) research, which explored questions of sport inequity to ‘build back better’. Outcomes further SfD discourses challenging (potentially) harmful structures affecting participants, including under reported effects of racialization. The study used a mixed-method methodology with quantitative analysis of survey data, and thematic analysis of personal experience within an anti-racist, anti-oppressive, and decolonial conceptual framework

A tool for assessing error in digital elevation models from a user’s perspective

A Digital Elevation Model (DEM) is a representation of geographic reality. The elevations recorded within DEMs have been shown to contain errors pertaining to sampling, measurement and interpolation (Fisher, 1998). Even a small amount of elevation error can greatly affect derivative products (Holmes et al., 2000). This can potentially have a significant impact on the application of DEMs in Geographical Information Systems (GIS) where first and second order derivatives are considered

Measurement of Government Intervention: A Comparison of Alternative Concepts

The variation in protection awarded to agricultural commodities indicates some general patterns of protection across industrialized and developing countries. This paper provides an analytical overview of the political economy market of agricultural protection. A comprehensive comparative analysis of different measurement concepts and their respective polio coverage is discussed. A graphic exposition of the policy effects captured by selected measurement concepts is provided for different market conditions