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The smooth Toeplitz algebra
No full textThis paper discusses the noncommutative geometry of the smooth compact operators on a separable Hilbert space and the smooth Toeplitz algebra, which is a smooth subalgebra of the Toeplitz algebra
An updated viscoplastic self-consistent model to capture the effects of residual stress, microstructural heterogeneity, and precipitation in cold-sprayed aluminum alloys
No full textCold spray additively manufactured (CSAM) aluminum alloys exhibit heterogenous microstructures and mechanical properties, primarily due to high dislocation densities, sub-grain structures, and variation in inter-particle (intersplat) bonding arising from high-velocity particle impacts. Thermal post-processing has been shown to enhance intersplat bonding, reduce high residual stress concentrations, and lower dislocation densities, thereby improving the overall mechanical properties. Building on previous advancements with a mean-field viscoplastic self-consistent (VPSC) model, integrating intersplat boundary terms, Hall-Petch relations, and physically informed residual stress parameters, the current work extends the model to include precipitates and their effects. Observations of CSAM aluminum 7050 alloy indicate precipitate congregation at intersplat boundaries, which contribute to the material’s deformation response. Incorporating effects of these precipitates into the VPSC model would allow for more accurate predictions of the stress-strain behavior in cold-sprayed aluminum 7050 alloy, enhancing the model’s applicability to CSAM aluminum alloys
An investigation into the inclusivity, methodology, and education of severe weather in K-12 schools
No full textSchools are a focal point in the lives of everyone in the community, especially teachers, parents, and students. Investigating the connection between these individuals and tornadoes by identifying shortcomings in education, training, and emergency procedures can induce more effective and informed decision-making for future encounters. This study evaluated the inclusivity of tornado protocols for students with disabilities, uncovered where parents prefer their child to shelter in early dismissal situations and clarified how extensively natural hazard education and tornado drills are covered in schools. Two surveys and semi-structured interviews were used to obtain responses from earth science teachers, K-12 guardians, and special education teachers and principals respectively. This investigation found that most students with disabilities were not being evaluated for personalized emergency measures related to severe weather during IEP meetings. If discussions did occur, they were typically in informal settings between parents, teachers, and principals, with students not commonly involved in the planning process. Students with disabilities in all classroom types were included in tornado drills, with those in the self-contained settings sometimes practicing more often than the general body. For early dismissal scenarios based on severe weather, parents preferred their children to return home in both a hypothetical morning and afternoon dismissal situation. Preferences for sending students home or keeping them in schools were influenced by confidence in school personnel, perceptions of housing and school infrastructure, perceptions of school communications, if parents were home during school hours, and if individuals had an alternate sheltering location. Finally, it was found that earth science teachers were commonly spending two to four hours during the school year covering the earth sciences and how to mitigate their effects. Most teachers were comfortable in teaching these topics. Tornado drills occurred two or more times a school year, with a mixture of morning and afternoon drills. Tornado drills were largely assessed for the time it takes to get students into position and if they take the drills seriously, with little evaluation of infrastructure concerns or the availability of resources. 54% of teachers were satisfied with tornado drilling in schools
Pearl Street, looking North, Natchez, Mississippi
Get PDFThis postcard features an image of Pearl Street in Natchez, Mississippi with commercial buildings and storefronts on either side, utility poles along the sidewalks, and a streetcar in the middle of the street. The title of the card is printed along the top of the image.https://scholarsjunction.msstate.edu/mss-lampton-images-ms-sw/1140/thumbnail.jp
Washington Street, Looking North, Vicksburg, Mississippi
Get PDFA color illustration of Washington Street looking North in Vicksburg, Mississippi is featured on this postcard. Two and three story commercial buildings line the street with sidewalks full of people in front. A streetcar is pictured at the far end of the street running along the tracks in the center. The title of the card is printed in the upper edge of the image.https://scholarsjunction.msstate.edu/mss-lampton-images-ms-sw/1146/thumbnail.jp
Portrait of Boyce and Windell Bailey, undated
Get PDFThis black and white photograph features two young boys, one in dark clothing and the other in a white gown and seated in a wicker chair. The back of the photograph identifies the boys as Boyce and Windell Bailey,https://scholarsjunction.msstate.edu/mss-lampton-images-misc/1046/thumbnail.jp
U. S. S. Mississippi Docked at the Panama Canal
Get PDFA sepia toned photograph of the U. S. S. Mississippi navy ship at the Panama Canal docks is featured on this postcard. Sailors dressed in white uniforms are pictured on the deck of the ship looking over the railing toward the dock. A man is pictured standing on the platform of the dock near a tall lamp post. The identity and location of the ship is handwritten on the back of the card.https://scholarsjunction.msstate.edu/mss-lampton-images-misc/1052/thumbnail.jp
A Literature Review of Video‑Enhanced Activity Schedules for Individuals with Autism Spectrum Disorder
No full textA literature review was conducted on the use of video-enhanced activity schedules for individuals with autism spectrum disorder (ASD). Systematic searches of electronic databases and reference lists identified 15 studies meeting the inclusion criteria. This study also evaluated the methodological quality and rigor of the included studies. The results demonstrated that video-enhanced activity schedules could be used along with other intervention methods to improve multiple skills or behaviors for a variety of age groups of individuals with ASD across different settings and activities. Among the reviewed studies, 53% of studies were rated as high quality, and 47% of studies were rated as adequate quality. In addition, it is promising to conclude that a video-enhanced activity schedule is a method with good generalization and maintenance effects and social validity. Limitations and suggestions for future research are discussed
Y. M. C. A., Laurel, Mississippi
Get PDFA black and white photograph of the Y. M. C. A. building in Laurel, Mississippi is featured on this postcard. The front section of the brick building is three stories tall and the back section is one story. The windows and the entrances on the second floor of the front section are arched and each entrance includes a tall set of steps with hand rails. The title of the card is written in white in the bottom right of the image.https://scholarsjunction.msstate.edu/mss-lampton-images-ms-pine-belt/1381/thumbnail.jp
Empowering Public Employees for Retirement Security: Evidence from a Pre-Retirement Financial Education Program
Get PDFThe United States is facing a retirement crisis, with eight in ten older adult households experiencing or at risk of financial insecurity (Tavares et al., 2024). National data shows 60% of Americans regularly contribute to retirement accounts, and just 40% have estimated their retirement savings needs (Lin et al., 2022). With approximately 5,900 Baby Boomers retiring daily (Fry, 2019), there is considerable interest in identifying effective strategies and policies to address retirement preparedness. This paper presents evaluation findings from a retirement planning financial education program delivered to 750 public employees by Iowa’s public employee retirement system and Cooperative Extension educators. Offered both in-person and online, the program aimed to improve financial knowledge, encourage engagement in pre-retirement planning activities, and reduce financial stress while boosting confidence. Quantitative and qualitative results highlight increased understanding of key retirement topics, high participant satisfaction, and the value of timely, relevant education delivered through strategic partnerships. The program’s success is attributed to Cooperative Extension best practices – skilled educators, strategic partnerships, and continuous evaluation. The study findings are discussed in relation to their implications for Extension professionals