Thesis (Ph. D.)--University of Wisconsin, 1967. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Universiẗat, Diss., 2002--Tübingen.

Background. Barlow’s mitral valve (MV) disease re- mains a surgical challenge. We compared short- and medium-term outcomes of neochordal (“loop”) versus edge-to-edge (“Alfieri”) minimally invasive MV repair in patients with Barlow’s disease. Methods. From January 2009 to April 2014, 123 consecutive patients with Barlow’s disease (defined as bileaflet billowing or prolapse [or both], excessive leaflet tissue, and annular dilatation with or without calcifica- tion) underwent minimally invasive MV operations for severe mitral regurgitation (MR) at our institution. Three patients (2.4%) underwent MV replacement during the study period and were excluded from subsequent anal- ysis. The loop MV repair technique was used in 68 pa- tients (55.3%) and an edge-to-edge repair was performed in 44 patients (35.8%). Patients who underwent a combi- nation of these 2 techniques (n [ 8 [6.5%]) were excluded. The median age was 48 years, and 62.5% of patients were men. Concomitant procedures included closure of a patent foramen ovale or atrial septal defect (n [ 19), tricuspid valve repair (n [ 5), and atrial fibril- lation ablation (n [ 15). Follow-up was performed 24.7 ± 17 months postoperatively and was 98% complete. Results. No deaths occurred perioperatively or during follow-up. Aortic cross-clamp time (64.1 ± 17.6 minutes versus 95.9 ± 29.5 minutes) and cardiopulmonary bypass (CPB) time (110.0 ± 24.2 minutes versus 146.4 ± 39.1 mi- nutes) were significantly shorter (p < 0.001) in patients who received edge-to-edge repair. Although patients who underwent edge-to-edge repair received a larger annulo- plasty ring (38.6 ± 1.5 mm versus 35.8 ± 2.7 mm; p < 0.001), the early postoperative resting mean gradients were higher(3.3±1.2mmHgversus2.6±1.2mmHg;p[ 0.007) and the mitral orifice area tended to be smaller in this group (2.8 ± 0.7 cm2 versus 3.0 ± 0.7 cm2; p [ 0.06). The amount of residual MR was similar between groups (0.3 ± 0.6 versus 0.6 ± 1.0 for edge-to-edge versus loop procedures, respectively; p [ 0.08). More than mild MR requiring early MV reoperation was present in 3 patients who underwent loop procedures (4.4%) and in no patients who had edge-to-edge procedures (p [ 0.51). During follow-up, 2 patients (1 in each group) required MV replacement for severe MR. The 4-year freedom from MV reoperation was 92.8% ± 5.0% in the Alfieri group compared with 90.9% ± 4.6% in the loop group (p [ 0.94). Conclusions. Minimally invasive MV repair can be accomplished with excellent early and medium-term outcomes in patients with Barlow’s disease. The edge- to-edge (Alfieri) repair can be performed with reduced operative times when compared with the loop technique, but it results in mildly increased transvalvular gradients and mildly decreased valve opening areas without any difference in residual MR.

Background. Barlow’s mitral valve (MV) disease re- mains a surgical challenge. We compared short- and medium-term outcomes of neochordal (“loop”) versus edge-to-edge (“Alfieri”) minimally invasive MV repair in patients with Barlow’s disease. Methods. From January 2009 to April 2014, 123 consecutive patients with Barlow’s disease (defined as bileaflet billowing or prolapse [or both], excessive leaflet tissue, and annular dilatation with or without calcifica- tion) underwent minimally invasive MV operations for severe mitral regurgitation (MR) at our institution. Three patients (2.4%) underwent MV replacement during the study period and were excluded from subsequent anal- ysis. The loop MV repair technique was used in 68 pa- tients (55.3%) and an edge-to-edge repair was performed in 44 patients (35.8%). Patients who underwent a combi- nation of these 2 techniques (n [ 8 [6.5%]) were excluded. The median age was 48 years, and 62.5% of patients were men. Concomitant procedures included closure of a patent foramen ovale or atrial septal defect (n [ 19), tricuspid valve repair (n [ 5), and atrial fibril- lation ablation (n [ 15). Follow-up was performed 24.7 ± 17 months postoperatively and was 98% complete. Results. No deaths occurred perioperatively or during follow-up. Aortic cross-clamp time (64.1 ± 17.6 minutes versus 95.9 ± 29.5 minutes) and cardiopulmonary bypass (CPB) time (110.0 ± 24.2 minutes versus 146.4 ± 39.1 mi- nutes) were significantly shorter (p < 0.001) in patients who received edge-to-edge repair. Although patients who underwent edge-to-edge repair received a larger annulo- plasty ring (38.6 ± 1.5 mm versus 35.8 ± 2.7 mm; p < 0.001), the early postoperative resting mean gradients were higher(3.3±1.2mmHgversus2.6±1.2mmHg;p[ 0.007) and the mitral orifice area tended to be smaller in this group (2.8 ± 0.7 cm2 versus 3.0 ± 0.7 cm2; p [ 0.06). The amount of residual MR was similar between groups (0.3 ± 0.6 versus 0.6 ± 1.0 for edge-to-edge versus loop procedures, respectively; p [ 0.08). More than mild MR requiring early MV reoperation was present in 3 patients who underwent loop procedures (4.4%) and in no patients who had edge-to-edge procedures (p [ 0.51). During follow-up, 2 patients (1 in each group) required MV replacement for severe MR. The 4-year freedom from MV reoperation was 92.8% ± 5.0% in the Alfieri group compared with 90.9% ± 4.6% in the loop group (p [ 0.94). Conclusions. Minimally invasive MV repair can be accomplished with excellent early and medium-term outcomes in patients with Barlow’s disease. The edge- to-edge (Alfieri) repair can be performed with reduced operative times when compared with the loop technique, but it results in mildly increased transvalvular gradients and mildly decreased valve opening areas without any difference in residual MR.

This study examines the literary career of the eighteenth-century American poet Joel Barlow. Because Barlow, unlike his peers, came to fully embrace print-based methods of authorship and advertising, between 1790-1810 he emerged as the most widely read American poet. Employing a book studies methodology, this project focuses on the publication details surrounding each of Barlow's poems including: his relationships with his publishers, the physical shape and appearance of his works, the cost of those works, how those works were advertised, and the extent of their geographic distribution. The arc of Barlow's career was extraordinary. Barlow's development, his transformation from a standard eighteenth-century club poet who relied on manuscript circulation and oral performance in the 1770s to an international man of letters and a periodical fixture by 1800, highlights the possibilities and limitations of American literary publishing during the early national period. Importantly, Barlow's ability to emphasize, rather than elide, his personal identity in the press, forces scholars to reevaluate their notions of late eighteenth-century republican print culture. Barlow's career also impacts our reading of American literary history. In an age of caution and deference in American poetry, Barlow was driven to maximize his audience, publishing his poems across all price points and in every medium offered by the time. Barlow's efforts at self-promotion, coupled with his staunch republican politics, allowed his poems to take on a life of their own in the era's fiercely partisan press. Thanks to his association with the transatlantic republican movement and radical religious thinkers, this study suggests that poems such as the "Conspiracy of Kings," (1792) "The Hasty Pudding," (1796) and the Columbiad (1807) enjoyed audiences as large and as economically diverse as those of popular fiction. Even in an age marked by the rise of the novel and the beginnings of romanticism, An Ink-Stained Neoclassicist contends that Barlow's proto-mass audience reveals the persistent popularity and cultural importance of neoclassical verse in the intellectual life of many Americans at the turn of the nineteenth century.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1938. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves [263]-269).

No description available.

Thesis (M.A.)--Miami University, Dept. of French and Italian, 2009. / Title from first page of PDF document. Includes bibliographical references (p. 34-40).

Stena Recycling is one of the leading recycling companies in Sweden and at their facility in Halmstad, 300 tonnes of refuse are handled every day where aluminium is one of the most valuable materials they sort. Today, most of the sorting process is done automatically, but there are still parts of the refuse that are not correctly sorted. Approximately 4\% of the aluminium is currently not properly sorted and goes to waste. Earlier works have investigated using machine vision to help in the sorting process at Stena Recycling. However, consistently through all these previous works, there is a problem in gathering enough annotated data to train the machine learning models. This thesis aims to investigate how machine vision could be used in the recycling process and if pre-training models using self-supervised learning can alleviate the problem of gathering annotated data and yield an improvement. The results show that machine vision models could viably be used in an information system to assist operators. This thesis also shows that pre-training models with self-supervised learning may yield a small increase in performance. Furthermore, we show that models pre-trained using self-supervised learning also appear to transfer the knowledge learned from images created in a lab environment to images taken at the recycling plant.

No description available.