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Inventory of Phase C/D Contract Files
No full textThese files were culled from the Shuttle Procurement Office Files sent here from the Building 1 vault. They consist of correspondence, forms, reports, etc. Included are documents such as procurement requests, procurement plans, notices of intent to propose, determination and findings, etc. The original order of these files has been maintained. Contract file documents were tabbed with a number which refers to a contract file checklist. The checklist is filed in thefront of each contract file folder. The documents in these folders are arranged numerically by the tabbed number. Immediately following the contract files are several generations of the NAS9-14000 contract followed by a folder containing contract draft material. The contracts are filed chronologically
Finding Aid for the Clear Lake Area Reference Collection (CLA-1)
No full textThe Clear Lake Area Reference Collection contains brochures, pamphlets, newspaper articles, event programs, flyers, publications, and miscellaneous materials, collected by the University of Houston-Clear Lake Archives and Special Collections to document the history of the Clear Lake area of Houston. The materials were originally organized as the “Clear Lake Vertical Subject Files”. The materials generally represent published and printed materials accessible to the local public, particularly area residents or visitors, including publications like quarterly newsletters.
Many of the items were published by commercial entities, such as business organizations or chambers of commerce. The collection also includes a significant amount of newspaper or magazine publications, both clipping copies and full documents
Inventory of STS-51-I Mission Documents
No full textThis subseries consists of mission reports, flight requirement documents, press information and other material related to STS-51-I. Document dates range from 1984 to 1986 and the subseries is arranged chronologically
Inventory of Shuttle Contractor Documents
No full textThis subseries contains reports generated by, and information about, a number of Shuttle subcontractors and smaller contractors. These documents are organized alphabetically by company name and chronologically within each company. This subseries contains contractor information for those companies on which we have little information elsewhere. See the Shuttle archive index to locate information on other contractors for which our holdings are more substantial
Particle Interactions in Compact Objects and The Early Universe
No full textWe show there is an effect of an extremely large magnetic field in highly dense media that has not been explored in prior work. We discuss the renormalizability of QED in such a medium. These extreme situations are found in the exotic environment of compact objects, especially neutron stars. It is found that the renormalization constants of QED are significantly modified in stellar media due to an additional B dependent term that appears due to the very high magnetic field in a star. The newly computed renormalization constants can be used as effective parameters of QED to study the particle processes in hot and dense stars with a strong magnetic field. We propose to use modified parameters to analyze astrophysical data and investigate the structure and composition of stars
Application of Whole Genome Sequencing and Maldi-Tof to Identification of Bacillus Species Isolated from Cleanrooms at Nasa Johnson Space Center
No full textAstromaterial cleanrooms at NASA Johnson Space Center are built environments that hold samples, such as lunar rocks, from different space exploration missions. Bacillus sp. are frequently detected in routine microbial monitoring of these facilities. Since this, and related genera, can form endospores that can withstand harsh conditions, they could contaminate astromaterials. This could confound searches for extraterrestrial life. Whole genome sequencing (WGS) is widely used for identifying bacterial strains and tracking their source; however, WGS is expensive and time consuming. Matrix-assisted laser desorption ionization– time of flight mass spectrometry (MALDI-TOF) shows promise as a low-cost, rapid method of identifying strains of bacteria, but few studies have compared this proteomics method to WGS. To evaluate a high throughput method of tracking the source of contamination of this built environment, WGS and MALDI-TOF was conducted on 18 bacterial strains isolated from surfaces in astromaterials cleanrooms. WGS identified 14 Bacillus, 2 Paenibacillus, 1 Solibacillus and 1 Alcaligenes strains. These isolates showed similarity to strains commonly observed in spacecraft assembly cleanrooms at other facilities. Cluster analysis of mass spectra generated by MALDI-TOF grouped strains together that were greater than 94% similar to each other in terms of amino acid sequences of single copy core genes, as assessed by WGS. This suggests that MALDI-TOF and WGS results are consistent with each other and MALDI-TOF can rapidly identify strains of Bacillus sp. isolated from cleanroom environments with a resolution comparable to WGS. Based on phylogenomic analysis, these results also suggest the presence of a cosmopolitan class of Bacillus sp. that are more likely to be found in cleanrooms and similar built environments than in natural systems
The Effects of Hurricane Harvey on Houston’s Gravidae
Get PDFThis thesis studies the effects of Hurricane Harvey on Houston’s gravidae (pregnant women). The study found that the gravidae’s demography determined their vulnerability to the storm. Gravidae who were foreign-born, in low-income households, with no college education, with no private health insurance, who utilized a county hospital, and who had no access to medical services or a maternity hospital were most likely to be affected by Hurricane Harvey. U.S.-born, high-income household gravidae, those with private health insurance, and those who were private hospital users were more likely to suffer a financial loss of 35,000 will be less likely to have access to maternity hospitals and will be less likely to suffer financial difficulty of more than 5,000 compared to those utilizing private hospitals
Inquiry-based learning: Perceptions, use, and barriers for 6-12 science teachers
No full textThere are many reasons students fail to achieve in STEM related fields post high school. For example, students may spend too much time receiving teacher centered lessons that focus primarily on vocabulary building and concept recognition. These lessons may not necessarily promote understanding or encourage students to learn other skills than memorization and vocabulary. Studies have shown that high school teachers are faced with the challenge of presenting students with a significant amount of information in a short period of time to prepare students for standardized state assessment exams. One possible solution is to implement inquiry-based learning (IBL) to enhance student understanding of STEM subjects and provide students with the skills necessary to succeed before graduating high school. This mixed methods study examined teacher perceptions to IBL, how teacher intent to incorporate IBL into daily lessons affected IBL, and teacher perceived barriers to the implementation of IBL. Quantitative analysis was conducted by analyzing the teacher responses to a modified version of the PRIMAS survey, while qualitative data were obtained from semi-structured interviews. The findings of this study indicated teachers have a positive perception of the principals of IBL and that the intent to implement IBL was correlated to its use in teachers’ daily lessons. The major barriers to IBL implementation were found to be teacher’s belief in student abilities, along with the time constraints, both the time it takes to conduct an inquiry lesson and the time limits placed on them in order to teach the state mandated and school directed curriculum. The teachers perceived barriers were the same regardless of the amount of IBL in daily lessons. This implies that it is teacher intent, and not the perceived barriers that truly limit IBL as a major teaching methodology in the science classroom
Are the Needs of First-Year Teachers Different Based on Preparation Program?
No full textThe purpose of this study was to examine the teacher self-efficacy of traditionally and alternatively-certified teachers and to determine if there is a perceived difference in levels of self-efficacy after the first-year of teaching in those teachers who completed a traditional certification program or an alternative certification program. The researcher also examined the perceptions of needs and levels of self-efficacy of first-year teachers who completed an alternative program compared to those of first-year teachers who completed a traditional program for certification. The qualitative data was analyzed to examine what alternatively-certified teachers’ perceptions of needs are and what traditionally prepared teachers’ perceptions of needs are. This mixed methods study used a survey in order to capture the first-year teachers’ level of self-efficacy who went through different types of certification and interviews to examine the perceived needs of first-year teachers. Through the lens of Tschannen-Moran and Woolfolk Hoy’s Teachers’ Sense of Efficacy Scale (TSES) and Bandura’s social learning theory, this study examined the first-year teachers’ beliefs as it relates to their self-efficacy. The participants included fifty-one elementary and secondary first-year teachers in a school district in Texas. The results of the study suggest there is no significant differences between the traditional certification and alternative certification teachers’ beliefs on self-efficacy in any of the domains – student engagement, instructional strategies, or classroom management.