University of New Brunswick: Centre for Digital Scholarship Journals
Not a member yet
21951 research outputs found
Sort by
Robotic photogrammetric underwater inspection of hydropower plants
Full text linkManuela Ammann from the University of Applied Sciences Northwestern Switzerland is the winner of the IFHS Student Award 2023 for her Master's thesis on “Robotic Photogrammetric Underwater Inspection of Hydropower Plants”. The following article summarises her award-winning work.
Hydropower is th e most important domestic source of renewable energy in Switzerland, accounting for around 57 % of domestic electricity production. The high intensity usage of hydropower plants results in high costs for regular maintenance and inspection, which are currently carried out through manual inspections by professional divers. The aim of this work is to develop a workflow for underwater photogrammetry with Remotely Operated Vehicles (ROV) to supplement or replace these dangerous and expensive dives. A calibration frame was developed to provide a scale reference for the data collected during the inspection. With different acquisition missions, investigations on camera calibration and 3D reconstruction were performed. The reconstruction of underwater objects was successfully implemented. Well- distributed control points provide accurate results as a point cloud with a sub-centimetre accuracy at object distances of up to 6 m. 80 % of the point cloud differ less than 1 cm from the reference scan
Exploration of hydrothermal venting sites using deep-towed multibeam echo sounder data
Full text linkThe following work was presented at the Hydrographic Conference HYDRO 2023, 7–9 November 2023, Genoa, Italy in the oral session Ocean Exploration.
The Federal Institute for Geosciences and Natural Resources (BGR) obtained a contract for the exploration of polymetallic sulphides from the International Seabed Authority (ISA) in an area of 10,000 km2 located in the southwestern Indian Ocean. Since obtaining this contract of exploration in 2015, BGR has conducted annual research cruises to this area and continuously improves the exploration methods for seafloor sulphides deposits. One of the main instruments is HOMESIDE, a deep-towed multibeam echo sounder (MBES) sled. Its water column data allows to visualize and therefore locate discharge sites of hydrothermal fluid – active hydrothermal venting sites (or commonly also referred to as “black smokers”). Additionally, its bathymetric data is used for geological mapping and therefore greater analysis of the seafloor geomorphology. HOMESIDE is typically towed at an altitude of about 100 m above the seabed in a water depth of approximately 3,000 m, allowing a resolution of the derived digital terrain model (DTM) of 2 m. Due to malfunction of individual positioning sensors or operational errors, the navigation data might need to be further corrected in post-processing. Navigation offsets between adjacent lines are mostly apparent in overlapping swath data. The tool mbnavadjust of the open-source software MB-System showed to be a valuable tool to improve the data quality subsequently in areas with data overlap and systematic navigation offsets. Data mismatches of more than 10 m are processed with this tool and can, therefore, be reduced significantly. In this paper, firstly, the role of deep-towed MBES as exploration tool for hydrothermal sites is presented. Secondly, the importance of post-processing MBES navigation based on the swath data especially for this project is highlighted. The workflow as well as the results are presented and show significant improvement
Putting Port Royal on the Map: Jean de Labat’s Early-18th-Century Cartographic Construction of Port Royal
No full textMaps are as much images of imperial imaginings as they are sources of practical geographic information. The work of Jean de Labat, a French military engineer at Port Royal, offers a case study of cartographic experimentation with empire in northeastern North America. An expanded critical cartographic reading of two of his maps reveals that on-the-ground realities mingled with imperial imaginings to construct a version of life at Port Royal that benefitted Labat and other French officials. It was for these reasons that Labat’s work was later published in the 1727 edition of the Cartes marines.Les cartes géographiques sont autant des images de fantaisies impériales que des sources de renseignements géographiques pratiques. Le travail de Jean de Labat, un ingénieur militaire français à Port-Royal, offre un cas d’espèce des expériences cartographiques impériales dans le nord-est de l’Amérique du Nord. Une lecture critique élargie de deux de ses cartes révèle que les réalités sur le terrain se mêlaient aux fantaisies impériales dans la construction d’une version de la vie à Port-Royal qui profitait à Labat et à d’autres fonctionnaires français. C’est pour ces raisons que le travail de Labat fut publié plus tard dans l’édition de 1727 des Cartes marines
A Narrative Inquiry into the Experiences of Racialized Internationally Trained Non-Academic Staff in Canadian Post-Secondary Institutions
Full text linkAn increasing number of Internationally Trained Professionals (ITPs) are entering the Canadian workforce, prompting various levels of government across the country to develop policies aimed at supporting the successful hiring, placement, and flourishing of all ITPs. These include Bill 98: Fairness for Ontario's Internationally Trained Workers Act (Legislative Assembly of Ontario, 2022), and the Canada Foreign Credential Recognition Program (Employment and Social Development Canada, 2021). Despite these important initiatives, the struggles of integration that ITPs experience remain unaddressed, making it difficult to assess the effectiveness of recruitment and transition programs for ITPs.
ITPs provide substantial educational assistance to the progressively growing number of international students (Deters, 2015; Schmidt & Block, 2010; Schmidt et al., 2010), and play a vital part in educating both international and domestic students to fit into the evolving school system. Although numerous studies have examined the experiences and challenges of internationally trained faculty (Ball & Tyson, 2011; Banks, 2015; Henry et al., 2017; Schmidt, 2015; Schmidt & Block, 2010), little research has focused on the experiences of non-academic staff in Canadian institutions, despite the growing number of ITPs in these equally essential roles.
In a 2007 equity review, the Canadian Association of University Teachers (CAUT) noted that many equity-seeking groups remain seriously underrepresented in Canadian post-secondary institutions. The lack of consistent and reliable data about equity makes it very difficult for policymakers, administrators, and academic staff associations to determine the full extent of the problem and develop the most effective and appropriate tools to ensure equity. Daniel (2019) claimed that the experiences of racialized faculty members are continually under-theorized, marginalized, and frequently erased with stereotypes.
If the experiences of racialized faculty members are continually under-theorized and marginalized, then the experiences of racialized non-academic staff, a group that has received even less attention, are even more neglected. As a result, the need to explore the experiences of racialized non-academic staff became evident. Therefore, this study offers insights into the experiences of racialized ITPs and serves as a catalyst for further research into the experiences of all non-academic professionals in Canadian post-secondary institutions, not just racialized ITPs
Ungrading as an Alternative Assessment Method in Higher Education: A Comprehensive Review and Analysis
Full text link
Histoire de deux étendues d’eau, Terre-Neuve, Canada
No full textBathymetric surveys of two small lakes in Newfoundland, located in different environments and separated by hundreds of kilometres, were carried out using two different survey methods—ground penetrating radar (GPR) and sound navigation and ranging (sonar). The different structures of these two disparate ponds were found to be related to the differing geology and degrees of anthropogenic influence at the two locations. In addition, the study outlined the strengths and limitations of the two survey methods. Tipping’s Pond, on the outskirts of the town of Corner Brook in western Newfoundland, is a sinkhole in a popular recreation area. It is roughly square with an area of 1.6 km2 and is slightly salty, making it largely impenetrable by radar. Bathymetric surveys with a salinity-impervious fish-finder sonar system revealed Tipping’s Pond to be bowl-shaped and more than 25 m deep in the centre. Grassy Pond, 3 km inland from the Trans-Canada Highway in eastern Newfoundland, is within an undeveloped area accessible by snowmobile in the winter. It has an irregular, elongated shape 1.2 km2 in area and is very fresh. As well as determining the bathymetry, GPR was able to determine the depth of a soft sediment layer overlying till, and to image structures within the soft sediments. The top of the sediment layer is undulating and shallow (<2.9 m deep) whereas the base of the sediments overlies sub-basins about 8 m deep.Des relevés bathymétriques de deux petits lacs situés dans des environnements distincts à Terre-Neuve et séparés par des centaines de kilomètres, ont été réalisés au moyen de deux méthodes différentes : le radar à pénétration de sol (RPS) et le sonar. Les structures différentes des deux étendues d’eau ont révélé des liens étroits avec la géologie locale qui diffère et les degrés d’influence anthropique aux deux endroits. L’étude a en outre mis en évidence les forces et les limites des deux méthodes de relèvement. Le bassin Tipping’s, en périphérie de la ville de Corner Brook dans l’ouest de Terre-Neuve, est un gouffre naturel intégré à une aire de loisirs populaire. De forme globalement carrée, il a une superficie de 1,6 km² et abrite une eau légèrement salée, ce qui le rend presque imperméable au radar. Les relevés bathymétriques réalisés à l’aide d’un sonar détecteur de poissons insensible à la salinité ont révélé que le bassin Tipping’s est une cuvette ayant plus de 25 mètres de profondeur en son centre. L’étang Grassy, à environ 3 km à l’intérieur des terres depuis la Transcanadienne dans l’est de Terre-Neuve, se trouve dans une zone peu développée accessible en motoneige durant l’hiver. L’étang d’eau très douce a une forme irrégulière et allongée, et une superficie de 1,2 km². Le RPS a permis de mesurer la bathymétrie, mais aussi la profondeur d’une couche de sédiments meubles recouvrant du till et d’imager les structures internes de ces sédiments. Le sommet de la couche de sédiments est ondulé et peu profond (< 2,9 m) tandis que sa base repose sur des sous-bassins ayant environ 8 m de profondeur
Datation de zircons par U–Pb, Lu–Hf et oligoéléments dans les roches plutoniques du terrane avalonien de la Nouvelle-Angleterre, ÉTATS-UNIS
No full textNew zircon U–Pb, Lu–Hf and trace element laser ablation inductively coupled mass spectrometry (LA-ICP-MS) data are presented for ten Ediacaran granitoid samples from the New England Avalon terrane, and from possibly exotic blocks of southeastern Massachusetts and Rhode Island, USA. Crystallization ages of the analyzed samples are ca. 611–577 Ma, with nine samples between ca. 611 Ma and ca. 588 Ma. These overlap with previously published ca. 620–589 Ma ages of granitoid rocks and ca. 597–584 Ma ages of volcanic complexes in the northern part of the terrane, where volcanism occurred immediately after plutonism. A granite that cuts sedimentary and volcanic rocks with a previously determined maximum depositional age of ca. 613 Ma in southern Rhode Island yielded a zircon chemical abrasion isotope dilution thermal ionization mass spectrometry (CA-TIMS) date of 609.30 ± 0.22 Ma. Volcanism therefore occurred between ca. 613 Ma and ca. 609 Ma, and ca. 10 myr prior to that in the northern part of the New England Avalon terrane. This area may be part of the previously interpreted exotic Newport Block.
Zircon εHf(t) values of all samples are -2.8–6.0, with ca. 1.23–0.96 Ga TDM1 Hf model ages. These values are also consistent with published εHf(t) values between -3.1 and 5.9 of nine published plutonic and volcanic rocks. Zircon trace element geochemistry data show mostly mixed continental arc and oceanic island signatures. The Eu/Eu* values are mostly 0.1–0.7, suggesting ~30–80 km crustal thicknesses. The exception is a sample southeast of the Nauset magnetic anomaly on the southeastern tip of Massachusetts, which has the highest zircon ∑REE values, mostly Nb/Hf >0.001, generally low Eu/Eu* values, and high εHf(t) values, all suggestive of a within-plate/anorogenic/rift setting. The new data provide a valuable reference data set, guiding future studies on the New England Avalon terrane and/or adjacent exotic blocks and on similar crustal domains elsewhere.De nouvelles datations de zircons par U–Pb, Lu–Hf et oligoéléments obtenues par la spectrométrie de masse à plasma induit par couplage inductif par ablation au laser (LA-ICP-MS) sont présentées pour dix échantillons de granitoïdes de l’Édiacarien du terrane avalionien de la Nouvelle-Angleterre et de blocs potentiellement exotiques du sud-est du Massachusetts et du Rhode Island aux États-Unis. Les âges de cristallisation des échantillons analysés sont d’environ 611 à 577 Ma; pour neuf d’entre eux, les âges se situent aux alentours de 611 Ma et 588 Ma. Ces données recoupent les âges précédemment publiés pour les roches granitoïdes, soit environ 620 à 589 Ma, et pour les complexes volcaniques de la partie nord du terrane, soit environ 597 à 584 Ma, où le volcanisme s’est produit immédiatement après le plutonisme. Un granite qui coupe les roches sédimentaires et volcaniques dont l’âge maximal de sédimentation a été précédemment établi à environ 613 Ma dans le sud du Rhode Island a accusé un âge de 609,30 ± 0.22 Ma par abrasion chimique – spectrométrie de masse à ionisation thermique (CA-TIMS) et dilution isotopique – spectrométrie de masse à ionisation thermique (DI-TIMS) de zircons. Par conséquent, le volcanisme s’est produit aux alentours de 613 Ma et 609 Ma et environ 10 Ma plus tôt dans la partie nord du terrane avalonien de la Nouvelle-Angleterre. Ce secteur peut faire partie du bloc de Newport qualifié d’exotique lors d’une interprétation antérieure.
Les valeurs de εHf(t) des zircons de tous les échantillons vont de -2,8 à 6,0 et les âges du modèle (TDM1 Hf) vont de 1,23 à 0,96 Ga environ. Ces valeurs correspondent également aux valeurs εHf(t) publiées, soit entre -3,1 et 5,9, des neuf roches volcaniques et plutoniques. La géochimie des oligoéléments des zircons révèle généralement des signatures mixtes d’îles océaniques et d’arcs continentaux. Les concentrations d’Eu/Eu* se situent en grande partie entre 0,1 et 0,7, ce qui suggère des épaisseurs crustales d’environ 30 à 80 km. Un échantillon prélevé au sud-est de l’anomalie magnétique de Nauset sur la pointe sud-est du Massachusetts fait exception. Il affiche les valeurs ∑REE de zircons les plus élevées, principalement un Nb/Hf > 0,001, de faibles concentrations d’Eu/Eu* en général et des valeurs εHf(t) élevées, données qui suggèrent toutes un milieu intraplaque/anorogénique/de rift. Les nouvelles datations fournissent un ensemble de données de référence précieuses pour orienter de futures recherches sur le terrane avalonien de la Nouvelle-Angleterre ou les blocs exotiques adjacents et d’autres domaines crustaux similaires
Young women’s embodied inner narratives of desired future in mild-to-moderate depression
Full text linkThis paper examines the lived experiences of seven young women with mild-to-moderate depression on dance-based participatory research from the perspective of narrative futuring (NF). The data consists of letters on desired future and reflective letters. The letters were analyzed with inductive thematic content analysis and later abductively interpreted with the concepts of inner and lived narratives drawn from the model of narrative circulation. The findings were condensed into four themes: 1) Love, self-respect, and self-actualization; 2) The tripod of peace of mind; 3) Peer support at significant turning points; and 4) The future. Overall, the method of danced NF facilitated a bodily connection, allowing the individual to discover personal meaning-making on depression, to envisage the possible desired future and to take steps towards it. Therefore, the corporeally and socially affirmed inner narratives contributed to the lived narratives. In conclusion, the findings suggest that embodied inner narratives derived from the desired future may contribute to lived narratives and improve mood in the short term. Although the findings must be considered preliminary, they may have practical implications for the prevention and alleviation of depression and possibly offer a multimodal and youth-friendly approach in health-care services
Narrative Acts as the Building Blocks of Stories
Full text linkNarratological studies dealing with the story itself, the fabula, have become increasingly scarce in recent years. By revisiting classic narratological models, we identify the concept of narrative act, an "action upon an action", as a fundamental element of narrative transformation. We then draw up a systematic inventory of them, in the form of a broad typology organized into a set of interlocking models, each of which enriches the description of the fabula actions. In this modeling work, we emphasize the narrative nature of acts, in the sense that they are not simply speech acts or types of actions by an agent in social interaction. Notably, these narrative acts have their own narrative characteristics: dilation on the one hand, and the mise en abyme of the discourse on the other hand. More than 600 narrative acts have been found and grouped under twenty models. In order to provide a tangible access to this large set, a web-based interactive visualization has been implemented, offering a simple way to browse through the hundreds of narrative acts