Cette étude vise à comprendre de quelle manière Cormac McCarthy caractérise le cow-boy novice dans le contexte contemporain de l'Ouest américain, théâtre de la première tragédie américaine: la fermeture de la frontier. John Grady et Billy, les deux protagonistes de cette Border Trilogy, s'embarquent dans des quêtes initiatiques afin de mieux comprendre leur statut d'héros américain moderne, tiraillé entre l'héritage du mythe et de la frontier, et la modernité d'un monde qui leur échappe. Par leurs méditations, leurs cheminements, les rituels qu'ils tentent de pratiquer à mi-chemin entre mythe et réalité, les jeunes novices définissent une éthique de l'apprentissage qui justifie la violence McCarthienne, un sujet intarissable d'étude critique sur l'auteur. En s'intéressant au problème de l'initiation, cette thèse espère apporter un éclairage nouveau sur ce débat, et propose comme pistes de réflexions les problèmes d'apprentissage et de rites inachevés, la solitude du héros et sa finitude ainsi que la "finitude" narrative d'un livre qui s'achève et la finitude "artistique" du narrateur qui s'interroge sur sa responsabilité sur l'(H)istoire. / This dissertation undertakes the study of Cormac McCarthy's characterization of the cowboy hero,from his early state of innocence in the modern American West to his understanding of the first greatAmerican tragedy, the closing of the frontier. John Grady and Billy, the two main protagonists of thisBorder Trilogy, try to follow in the old pioneers' footsteps, attempting to achieve heroic status throughpublic display of bravery in a modern world that ignores them. Through their meditation, theirinitiatory journeys, and attempts to perform rites they define an ethics of experience making whichhelps justify the violence at the core of McCarthy's novels, a topic very popular in McCarthian studies.This dissertation hopes to shed light on the bond that ties initiation to violence and offers to discussproblems of experimentation and unfulfilled rituals, the hero's solitude and finitude, as well as thenarrative finitude of the book that always ends and the artistic finitude of the storyteller who also seeksanswers on his responsibility in the (hi)story.

In the Dutch Reformed Church (NGK), as well as in other reformed churches, confirmation is an important mile stone in every person's life: It is when young people (or new members) can make a public (re) commitment to God. In this study, the researcher proposes a new way of thinking about confirmation as a liturgical transitional ritual (rite of passage). The research questions in the study are: o During which transitional life phase will confirmation be best suitable and meaningful? o What liturgical praxis theory and key points can be given to help a liturgist to make sense and present this liturgical ritual as transitional ritual? These research questions are approached by studying the question from different probes in the various chapters: a liturgical probe, a psychological and anthropological probe, a transitional (rites of passage) ritual probe, as well as an anthropological theological probe on faith formation. The researcher proposes a liturgy practice theory with key points to keep in mind when planning the liturgical ritual confirmation. In addition, she suggested that confirmation takes place during the transition phase to emerging adulthood. However, the reader will conclude from the different probes and summary of the study that there are more: more transitions, more life phases and more transitional rites and commitments that we can do in the DRC (as well as other reformed churches). / Dissertation (MTh)--University of Pretoria, 2018. / Die Suid-Afrikaanse Akademie vir Wetenskap en Kuns / Practical Theology / MTh / Unrestricted

What is the probability that in a fair coin toss game (a simple random walk) we go bankrupt in n steps when there is an initial lead of some known or unknown quantity $m? What is the distribution of the number of steps N that it takes for the lead to vanish? This thesis explores some of the features of this first passage to the origin (FPO) distribution. First, we explore the distribution of N when m is known. Next, we compute the maximum likelihood estimators of m for a fixed n and also the posterior distribution of m when we are given that m follows some known prior distribution.

[Background]: The advent of bidirectional encoder representation from trans- formers (BERT) language models (Devlin et al., 2018) and MS Marco, a large scale human-annotated dataset for machine reading comprehension (Bajaj et al., 2016) that made publicly available, led the field of information retrieval (IR) to experience a revolution (Lin et al., 2020). The retrieval model based on BERT of Nogueira and Cho (2019), by the time they published their paper, became the top entry in the MS Marco passage-reranking leaderboard, surpassing the previous state of the art by 27% in MRR@10. However, training such neural IR models for different domains than MS Marco is still hard because neural approaches often require a vast amount of training data to perform effectively, which is not always available. To address the problem of the shortage of labelled data a new line of research emerged, training neural models with weak supervision. In weak supervision, given an unlabelled dataset labels are generated automatically using an existing model and then a machine learning model is trained upon the artificial “weak“ data. In case of weak supervision for IR, the training dataset comes in the form of a tuple (query, passage). Dehghani et al. (2017) in their work used the AOL query logs (Pass et al., 2006), which is a set of millions of real web queries, and BM25 to retrieve the relevant passages for each of the user queries. A drawback with this approach is that it is hard to obtain query logs for every single different domain. [Objective]: This thesis proposes an intuitive approach for addressing the shortage of data in domains with limited or no data at all through transfer learning in the context of IR. We leverage Wikipedia’s structure for creating a Wikipedia-based generic IR training dataset for zero-shot neural models. [Method]: We create the “pseudo-queries“ by concatenating the titles of Wikipedia’s articles along with each of their title sections and we consider the associated section’s passage as the relevant passage of the pseudo-queries. All of our experiments are evaluated on a standard collection: MS Marco, which is a large scale web collection. For our zero-shot experiments, our proposed model, called “Wiki“, is a BERT model trained on the artificial Wikipedia-based dataset and the baseline is a default BERT model without any additional training. In our second line of experiments, we explore the benefits gained by pre-fine- tuning on the Wikipedia-based IR dataset and further fine-tuning on in-domain data. Our proposed model, "Wiki+Ma", is a BERT model pre-fine-tuned in the Wikipedia-based dataset and further fine-tuned in MS Marco, while the baseline is a BERT model fine-tuned only in MS Marco. [Results]: Results regarding our first experiments show that our BERT model trained on the Wikipedia-based IR dataset, called "Wiki", achieves a performance of 0.197 in MRR@10, which is about +10 points more in comparison to a BERT model with default weights; in addition, results in the development set indicate that the “Wiki“ model performs better than BERT model trained on in-domain data when the data is between 10k-50k instances. Results regarding our second line of experiments show that pre-fine-tuning on the Wikipedia-based IR dataset benefits later fine-tuning steps on in-domain data in terms of stability. [Conclusion]: Our findings suggest that transfer learning for IR tasks by leveraging the generic knowledge incorporated in Wikipedia is possible, though more experimentation is needed to understand its limitations in comparison with the traditional approaches such as the BM25.

Submitted in partial fulfilment of the requirements for The Degree of Doctor of Philosophy (Community Psychology) Faculty of Arts University of Zululand, 2010. / The lives of individuals in all societies are a series of passages from one age to another and from one occupation to the other. Among the Vhavenda, there are fine distinctions among age or occupational groups and progression from one group to the next is accompanied by special rituals enveloped in ceremonies which involve actions that are clearly regulated and guarded so that the entire society suffer no discomfort or injury. The research explores and describes the lived experiences of Vha-Venda initiated women in the rural areas of Mashau, Mashawana and Shayandima village in Limpopo Province, South Africa. The perception that transition practices, otherwise known as initiation rituals or rites of passage, are only practiced in the ‘traditional’ societies because it is believed to be where the culture is embedded. This study draws on qualitative research principles based on the ethnographic approach. This research explores and describes the lived experiences of initiation of Venda women that is practiced and currently being implemented in the three villages that is, Mashau, Mashawana and Shayandima village in Limpopo Province, South Africa. As a result, this study is informed by the qualitative data gathered during the initial stages of the research with the assistance of research guides. The core material in this study emerges from in depth, semi-structured interviews conducted during individual interviews and focus group interviews with fifteen initiated women and two research guides between the age of thirty and sixty. The research guides, with special knowledge of the culture assisted the researcher on the process and activities of the initiation and also informed the researcher about the venues where certain rituals take place and also assisted in translation of certain phrases for clarification. In compliance with research ethics, the identities of the respondents remain confidential through the use of pseudonyms. The research concludes that the lived experiences of women initiation are private and one is strictly prohibited to talk about them, especially with uninitiated women. The aim is to portray the traditional social and cultural ritual proposed to be learnt and preserved. In this study, the researcher’s findings are that: Conformity, compliance and obedience with the initiation rituals can save a person from embarrassment in Limpopo Province where initiation is practiced. Participants reported that women are silenced and forbidden to talk about initiation outside ‘dombani’ with the uninitiated women. They reported that the initiation ritual is secret and thus a taboo to talk about it. Initiates are prohibited to disclose what happens during the initiation process. In contrast, uninitiated women viewed the ritual as barbaric and promiscuous. The initiated indicated that they were forced to attend because of fear of rejection, discrimination and isolation by the community. Other participants agreed to have attended for the sake of acceptance, though they believed to have gained knowledge about understanding womanhood. Most of the women mentioned that although it was some years that they had attended the initiation school, they still carried the burden of anger, shame, humiliation, frustration, low-self esteem, sense of helplessness and lack confidence and still find it hard to share their experiences or talk about them. The researcher concurs with the participants and Stayt (1968) that initiated women are denied freedom of expression. It is sticky prohibited to talk or share the initiation experiences with the non- initiated let alone discuss it outside dombani. Thereby, the aim, and its concomitant 4 objectives, have been thoroughly explored and achieved.

Culverts are rehabilitated using a variety of techniques; the approach studied in this report focuses on the use of slip liners. Slip lining refers to installing a liner pipe inside a host pipe to extend its useful life. Slip lining reduces the diameter of the culvert; however, when a smooth-walled liner [e.g., high-density polyethylene (HDPE)] is installed in a profiled-wall pipe (e.g., corrugated metal pipe), the reduction in hydraulic roughness helps to compensate for the reduction in flow area, minimizing any reduction in discharge capacity. In some cases, the discharge capacity may increase. A smaller diameter liner, made of smoother material, will likely produce larger pipe flow velocities relative to the host culvert. High velocities can potentially create a barrier for fish passage, discouraging their use in areas sensitive to fish passage. The objective of this research was to find ways to implement slip liners and still accommodate fish passage. A 60-ft long, 2-ft diameter, baffled slip liner was tested at seven slopes (0-3.5%) and at three flow rates per slope (1-4.6 cfs). For comparison purposes, tests were also conducted on a smooth-walled (non-baffled) liner. Baffles were found to greatly increase the potential for low-flow fish passage, allowing passage up to slopes of 3.5%. Conversely, the smooth-walled liner prohibited passage beyond a 1.0% slope. The potential drawback to using baffles in a slip-lined culvert is the reduction in culvert flow capacity. Compared to the smooth-walled liner, the baffled culvert reduced the flow capacity of the culvert by about 74% at pressurized, full pipe flow. Finally, velocity was measured with an acoustic Doppler velocimeter (ADV) in the baffled culvert and turbulence values were calculated using four different methods. The Energy Dissipation Factor, or EDF, values had a close relationship with percent fish passing and if more testing is done, it could be used as a scaling factor to transfer fish passage data to other sized culverts. The results of this study, suggest that baffled slip-lined culverts can aid fish passage and are useful for culvert rehabilitation as long as the culvert can still maintain appropriate flow capacity.

abstract: This report analyzed the dynamic response of a long, linear elastic concrete bridge subject to spatially varying ground displacements as well as consistent ground displacements. Specifically, the study investigated the bridge’s response to consistent ground displacements at all supports (U-NW), ground displacements with wave passage effects and no soil profile variability (U-WP), and ground displacements with both wave passage effects and soil profile variability (V-WP). Time-history ground displacements were taken from recordings of the Loma Prieta, Duzce, and Chuetsu earthquakes. The two horizontal components of each earthquake time-history displacement record were applied to the bridge supports in the transverse and longitudinal directions. It was found that considering wave passage effects without soil profile variability, as compared with consistent ground displacements, significantly reduced the peak total energy of the system, as well as decreasing the maximum relative longitudinal displacements. The maximum relative transverse displacements were not significantly changed in the same case. It was also found that including both wave passage effects and soil profile variability (V-WP) generally resulted in larger maximum transverse relative displacements, across all earthquake time-histories tested. Similarly, it was found that using consistent ground displacements (U-NW) generally resulted in larger maximum longitudinal relative displacements, as well as larger peak total energy values. / Dissertation/Thesis / Masters Thesis Civil, Environmental and Sustainable Engineering 2019

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Building materials, lack of vegetation and absence of open spaces in urban areas cause surfaces such as asphalt to become warmer than nearby vegetated surfaces that surround the city, creating the urban heat island (UHI) effect. Little investigation has been done regarding temperature changes across these surfaces before and after frontal passages. This study analyzes the 24-hour temperature difference as a result of a cold front passage by examining the transitional seasons (Spring and Fall) for Dallas, Texas; Atlanta, Georgia; and Kansas City, Missouri. This research focused on investigating the pattern of moist and dry tropical air masses preceding a transitional air mass and moist and dry polar air masses the proceeding 24-hours. Using recorded hourly data from Automated Surface Observing Systems (ASOS) stations during these events one can visualize the time lag in temperature change between sites in developed urban areas and surrounding more vegetated surfaces outside the city.