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Eartha M.M. White and the Winner of the Hudson Car Raffle
No full textPhotograph: Eartha White and recipient of an automobile won at a raffle held for the benefit of the Clara White Mission. July 5, 19--? Eartha White (center left). Benefit held at Jacksonville Ball Park. Circa 1948-1952.https://digitalcommons.unf.edu/eartha_images/1687/thumbnail.jp
Unidentified Child
No full textPhotograph: Portrait of a child seated in chair. Photographer stamp on reverse: E.P. Dunshee 3 Tremont Row, Boston. Undated.https://digitalcommons.unf.edu/eartha_images/1702/thumbnail.jp
Unidentified Woman
No full textPhotograph: Portrait of an unidentified woman. Photographer stamp on reverse: Doremus\u27 Gallery of Art. Undated.https://digitalcommons.unf.edu/eartha_images/1696/thumbnail.jp
Eartha White and Unidentified People Repairing Dolls
No full textPhotograph: Eartha White and unidentified people repairing dolls for Christmas Party at Clara White Mission. Undated.https://digitalcommons.unf.edu/eartha_images/1731/thumbnail.jp
Eartha M.M. White at a Mason Function
No full textPhotograph: Eartha White standing with an unidentified person at a Mason function, Atlantic City, New Jersey. On reverse: Miss Eartha M.M. White attends Mason function, Atlantic City, N.J. (Miss White in flowered -dress standing next to cart) Undated.https://digitalcommons.unf.edu/eartha_images/1162/thumbnail.jp
Teaching Black elementary students: The influence of experiences and teacher preparation for PWI and HBCU interns on their understanding of and self-efficacy for culturally responsive teaching
Get PDFTeacher preparation program agendas include culturally responsive teaching (CRT) due to the student diversity in modern elementary classrooms. Overwhelmingly, White, middle-class English-speaking women who may not completely understand their students\u27 cultural backgrounds are teachers in those culturally diverse classrooms. In schools where Eurocentric values, assumptions, beliefs, and methodologies are being taught, many students of color are not performing well academically. Black teachers and teachers with a good understanding of students\u27 cultural experiences and backgrounds have higher expectations and counter the racial stereotypes about Black students. This multiple case study examined how two teacher interns understand Culturally Responsive Teaching (CRT) and the influence of experiences inside and outside their teacher preparation program on their CRT understanding and self-efficacy for teaching Black elementary students. One intern was from a Predominately White Institution (PWI), and the other was from a Historically Black College or University (HBCU). Each intern was interviewed twice and submitted a lesson plan they thought demonstrated their use of CRT. Data was analyzed inductively to determine themes, and then themes were aligned to Geneva Gay\u27s CRT essential elements. Though the participants were from two different ethnic backgrounds and preparation programs, there were some similar experiences they believed prepared them to teach Black students. Results indicated that the participants’ experiences outside of teacher preparation influenced their cultural diversity knowledge base and ability to demonstrate cultural caring and build a learning community. Those two essential elements also contributed to their self-efficacy within the teacher preparation program, along with cross-cultural communication and cultural congruity in classroom instruction. Limitations included time restraints of the semester, which limited the number of cases and recruitment efforts. A general implication for PWI and HBCU and specific implications for the respective institution type are provided
Extracting road surface marking features from aerial images using deep learning
Get PDFThe traffic and roadway safety agencies spend significant efforts each year collecting roadway data, including lane configurations and other road surface marking data, such as areas with school zone markings, sidewalks, left turns, right turns, bicycle lanes, etc., for safety analysis and planning purposes. The current manual data collection methods pose significant operational and quality control challenges as they are costly and prone to errors. In addition to that the manual data collection is labor intensive and takes too much time involving high equipment costs, questionable data accuracy guarantees, and concerns about the safety of the crew.
This study aims to develop an automatic mechanism for extracting selected road surface marking features from the aerial images, an approach that will help the traffic and road safety agencies to cut down the cost of time, money, and safety of the crew by automating the data collection process.
To do that, a YOLOv5 deep-learning model has been built and trained to identify eleven roadway surface markings from the geo-referenced aerial images. The model showcases robust performance across various classes, demonstrating its versatility in identifying different types of roadway surface markings. For instance, when focusing on left-only classes, the model achieves a precision of 95% and 94% at a confidence threshold of 0.7. Similarly, for right-only classes, the model attains 93% precision and 92% recall at a confidence level of 0.6. Based on the literature reviews [1], the observed metrics are reasonably good and maybe improved further to allow the adoption of this mechanism by the traffic and safety agencies at scale
Development of high kinetic inductance superconducting nanowire devices on high permittivity strontium titanate substrates
Get PDFThis thesis involves the fabrication and characterization of devices made from two different superconducting materials: yttrium barium copper oxide (YBCO), a high-TC complex oxide, and niobium nitride (NbN), a low-TC transition metal nitride. Both types of devices are fabricated on strontium titanate substrates, which provides a good lattice match to YBCO and also an extremely large permittivity at low temperature. We demonstrate that wet etching of YBCO thin films via bromine can be a viable microfrabriation technique for the material. Using approximately 35 nm thick epitaxially grown YBCO on an STO substrate, we were able to fabricate YBCO “microwires” with widths of 5 μm and 50 μm. These wires had a superconducting critical temperature (TC) of 86 K and a critical current density of 1 × 1011 A/m2 at low temperature, indicating that our fabrication process yields wires with electrical properties that are close to that of the bulk material. We have also developed impedance-matched lowloss microwave resonators using high kinetic inductance NbN nanowires on a substrate consisting of 100 nm of epitaxial STO on a 0.5 mm thick lanthanum aluminate (LAO) substrate. Comparing the measured transmission coefficient to numerical simulations, we were able to determine the dielectric constant of the STO film and determined it to be ϵ = 590 with an upper bound on the STO loss tangent of tan δ = 5 × 10−4 at 4.5 K. These devices demonstrate the potential for combining high-inductance superconducting nanowires with high-permittivity substrates to realize impedance-matched devices with dramatic spatial compression of the signal wavelength
Stanton Graduating Class
No full textPhotograph: Graduating class at Stanton. Undated.https://digitalcommons.unf.edu/eartha_images/1046/thumbnail.jp
Unidentified Relatives of Eartha M.M. White
No full textPhotograph: Unidentified relatives of Eartha White.. Undated.https://digitalcommons.unf.edu/eartha_images/1058/thumbnail.jp