184 research outputs found
Leading with Heart: Urban Elementary Principals as Advocates for Students
Principals in urban settings serve elementary schools often densely populated with highly mobile, ethnically diverse, and economically disadvantaged students
The Spacecraft Fire Experiment (Saffire) - Objectives, Development and Status
Since 2012, the Spacecraft Fire Experiment (Saffire) has been under development by the Spacecraft Fire Safety Demonstration (SFS Demo) project that is funded by NASA's Advanced Exploration Systems Division in the Human Exploration and Operations Mission Directorate. The overall objective of this project is to reduce the uncertainty and risk associated with the design of spacecraft fire safety systems for NASA's exploration missions. This is accomplished by defining, developing, and conducting experiments that address gaps in spacecraft fire safety knowledge and capabilities identified by NASA's Fire Safety System Maturation Team. This paper describes the three Spacecraft Fire Experiments (Saffire-I, -II, and -III) that were developed at NASA-GRC and that will conduct a series of material flammability tests in low-gravity and at length scales that are realistic for a spacecraft fire. The experiments will be conducted in Orbital ATK's Cygnus vehicle after it has unberthed from the International Space Station. The tests will be fully automated with the data downlinked at the conclusion of the test and before the Cygnus vehicle reenters the atmosphere. The objectives of these experiments are to (1) determine how rapidly a large scale fire grows in low-gravity and (2) investigate the low-g flammability limits compared to those obtained in NASA's normal gravity material flammability screening test. The hardware for these experiments has been completed and is awaiting their respective launches, all planned for 2016. This paper will review the objectives of these experiments and how they address several of the knowledge gaps for NASA's exploration missions. The hardware development will be discussed including several novel approaches that were taken for testing and evaluation of these series payloads. The status of the missions and operational status will also be presented
Good Leaders Need to Develop Good Followers
Much has been written about the competencies and characteristics of a leader. However, there is little on the topic of followers. Who are those that follow? Are there different types of followers? How does a good leader develop the skills and competencies of their followers to make the organization great? Rosenblatt has developed a matrix that shares the types of followers based on two continuum -- relationship initiative and the other performance initiative. Other authors have described key competencies of followers. John Maxwell in the 360 degree Leader shares a second premise -- you may lead from the middle. His five levels of leadership correspond with the Rosenblatt\u27s types of followers. Are there tools or surveys that would aid a leader in identifying where a follower is on the continuum? What are the advantages of knowing where some one is on these continuums? Finally, using the work of Rath and Conchie, one is able to identify strengths of a leader and follower and how to max-imize organizational performance using the Clifton Strengths Test
When Western Epistemology and An Indigenous Worldview Meet: Culturally Responsive Assessment in Practice
Properties of Smoke from Overheated Materials in Low-Gravity
Smoke particle size measurements were obtained under low-gravity conditions by overheating several materials typical of those found in spacecraft. The measurements included integral measurements of the smoke particles and physical sample of the particles for Transmission Electron Microscope analysis. The integral moments were combined to obtain geometric mean particle sizes and geometric standard deviations. These results are presented with the details of the instrument calibrations. The experimental results show that, for the materials tested, a substantial portion of the smoke particles are below 500 nm in diameter
Photoreduction of CO2 with a Formate Dehydrogenase Driven by Photosystem II Using a Semi-artificial Z-Scheme Architecture.
Solar-driven coupling of water oxidation with CO2 reduction sustains life on our planet and is of high priority in contemporary energy research. Here, we report a photoelectrochemical tandem device that performs photocatalytic reduction of CO2 to formate. We employ a semi-artificial design, which wires a W-dependent formate dehydrogenase (FDH) cathode to a photoanode containing the photosynthetic water oxidation enzyme, Photosystem II, via a synthetic dye with complementary light absorption. From a biological perspective, the system achieves a metabolically inaccessible pathway of light-driven CO2 fixation to formate. From a synthetic point of view, it represents a proof-of-principle system utilizing precious-metal-free catalysts for selective CO2-to-formate conversion using water as an electron donor. This hybrid platform demonstrates the translatability and versatility of coupling abiotic and biotic components to create challenging models for solar fuel and chemical synthesis.ERC Consolidator Grant, EPSRC, Christian Doppler Research Association (Austrian Federal Ministry for Digital and Economic Affairs and the National Foundation for Research, Technology and Development), the OMV group, Deutsche Forschungsgemeinschaft, European Union's Horizon 2020 MSCA, Fundação para a Ciência e Tecnologia (Portugal), COMPETE2020/POCI and European Union’s Horizon 202
Investment Fraud in the Mountain West
This fact sheet focuses on investment fraud data in the Mountain West states of Arizona, Colorado, Nevada, New Mexico and Utah. The original report includes data from “The 2023 State of Investment Fraud” study conducted by Carlson Law
Student and Faculty Diversity at Public Research Universities in the Mountain West
This fact sheet examines data on student and faculty diversity at public research universities in the Mountain West region. This fact sheet examines data from a New America report by Olivia Cheche which explores data on the 106 R1 (Research Very High) universities in the U.S. as designated by Carnegie Foundation for the Advancement of Teaching
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