The Winter Issue 2022

This winter issue is the first issue of Fonds and Feathers, a newsletter of the Southern Miss Student Archivists. It was edited and contributed by Margaret Rodriguez, Rori Holford, Lara Taylor, and Patrick Regan. Dr. Jeff Hirschy is the faculty advisor.https://aquila.usm.edu/fondsandfeathers/1001/thumbnail.jp

A Case Study of the Development of an eCoach

Internship is a critical feature of teacher preparation programs and can be one of the most influential experiences for teacher candidates. New technologies, such as eCoaching, demonstrate promising results in providing richer experiences to teacher candidates during internship. eCoaching allows university supervisors to provide real-time feedback on instruction and has proven effective at improving teacher change. However, eCoaching is different from traditional university supervision. In this case study, we describe the evolution of a traditional university supervisor using eCoaching for the first time and the support she needs to be effective. Implications are discussed

Trifocal Relative Pose from Lines at Points and its Efficient Solution

We present a new minimal problem for relative pose estimation mixing point features with lines incident at points observed in three views and its efficient homotopy continuation solver. We demonstrate the generality of the approach by analyzing and solving an additional problem with mixed point and line correspondences in three views. The minimal problems include correspondences of (i) three points and one line and (ii) three points and two lines through two of the points which is reported and analyzed here for the first time. These are difficult to solve, as they have 216 and - as shown here - 312 solutions, but cover important practical situations when line and point features appear together, e.g., in urban scenes or when observing curves. We demonstrate that even such difficult problems can be solved robustly using a suitable homotopy continuation technique and we provide an implementation optimized for minimal problems that can be integrated into engineering applications. Our simulated and real experiments demonstrate our solvers in the camera geometry computation task in structure from motion. We show that new solvers allow for reconstructing challenging scenes where the standard two-view initialization of structure from motion fails.Comment: This material is based upon work supported by the National Science Foundation under Grant No. DMS-1439786 while most authors were in residence at Brown University's Institute for Computational and Experimental Research in Mathematics -- ICERM, in Providence, R

Campylobacter jejuni Multilocus Sequence Types in Humans, Northwest England, 2003–2004

MLST can be used to describe and analyze the epidemiology of campylobacteriosis in distinct human populations

Identification of Potential Environmentally Adapted Campylobacter jejuni Strain, United Kingdom

In a study of Campylobacter infection in northwestern England, 2003–2006, C. jejuni multilocus sequence type (ST)–45 was associated with early summer onset and was the most prevalent C. jejuni type in surface waters. ST-45 is likely more adapted to survival outside a host, making it a key driver of transmission between livestock, environmental, and human settings

Massive-Star Supernovae as Major Dust Factories

We present late-time optical and mid-infrared observations of the Type-II supernova 2003gd in NGC 628. Mid-infrared excesses consistent with cooling dust in the ejecta are observed 499-678 days after outburst, and are accompanied by increasing optical extinction and growing asymmetries in the emission-line profiles. Radiative-transfer models show that up to 0.02 solar masses of dust has formed within the ejecta, beginning as early as 250 days after outburst. These observations show that dust formation in supernova ejecta can be efficient and that massive-star supernovae can be major dust producers throughout the history of the Universe.Comment: 11 pages, 1 figure. Accepted 2006 May 30 for publication in Science; Published in 2006 Jun 8 edition of Science Express; 2nd version fixes minor change in conclusion made in pres

Analysis of the 10q11 Cancer Risk Locus Implicates MSMB and NCOA4 in Human Prostate Tumorigenesis

Genome-wide association studies (GWAS) have established a variant, rs10993994, on chromosome 10q11 as being associated with prostate cancer risk. Since the variant is located outside of a protein-coding region, the target genes driving tumorigenesis are not readily apparent. Two genes nearest to this variant, MSMB and NCOA4, are strong candidates for mediating the effects of rs109939934. In a cohort of 180 individuals, we demonstrate that the rs10993994 risk allele is associated with decreased expression of two MSMB isoforms in histologically normal and malignant prostate tissue. In addition, the risk allele is associated with increased expression of five NCOA4 isoforms in histologically normal prostate tissue only. No consistent association with either gene is observed in breast or colon tissue. In conjunction with these findings, suppression of MSMB expression or NCOA4 overexpression promotes anchorage-independent growth of prostate epithelial cells, but not growth of breast epithelial cells. These data suggest that germline variation at chromosome 10q11 contributes to prostate cancer risk by influencing expression of at least two genes. More broadly, the findings demonstrate that disease risk alleles may influence multiple genes, and associations between genotype and expression may only be observed in the context of specific tissue and disease states