Na barreira regressiva da Pinheira, são reconhecidos quatro ambientes deposicionais costeiros, caracterizados por parâmetros geológicos como a análise de litofácies, estruturas sedimentares, grau de compactação e conteúdo de moluscos. Informações que são analisadas em conjunto com imagens de dados geofísicos obtidas com o método do Radar de Penetração no Solo (GPR – Ground Penetrating Radar) para determinar esses ambientes. O presente trabalho visa a caracterização destes ambientes deposicionais através da análise da amplitude do sinal em traços de antenas com frequências centrais de 80, 100, 200 e 400 MHz em conjunto com os dados de compactação e litológicos de um furo de sondagem. E também mostra o comportamento da atenuação do sinal em relação a umidade presente no ambiente. A análise dos traços permitiu a identificação dos contatos entre os ambientes já descritos para barreiras regressivas, mostrando variação no valor das amplitudes (decréscimo ou aumento) em conjunto com a variação no grau de compactação, que evidenciam em subsuperfície a mudança entre os ambientes de cordões litorâneos, backshore/foreshore e shoreface superior e inferior. A interferência da umidade na atenuação do sinal nos dados analisados pode ser observada apenas nos primeiros 0,5 m. Demonstrando que a pluviosidade não é um fator de relevância para atenuação do sinal em ambientes arenosos onde o nível da água é próximo a superfície. A análise dos radargramas para todas as antenas, permitiu a identificação dos padrões de refletores já descritos para os ambientes da área de estudo e a antena com frequência central de 200 MHz apresentou maior resolução para a definição de todos os ambientes. / In the Pinheira regressive barrier, four coastal depositional environments are recognized, characterized by geological parameters such as lithofacies analysis, sedimentary structures, compaction degree and set of mollusks. Information that is analyzed together with images of geophysical data obtained with the Ground Penetrating Radar (GPR) method to determine these environments. The present work aims to characterize these depositional environments by analyzing the signal amplitude in traces with central frequencies antennas of 80, 100, 200 and 400 MHz in conjunction with the compaction and lithological data of a drill hole. It also shows the behavior of signal attenuation in relation to the humidity present in the environment. The analysis of the traces allowed the identification of the contacts between the environments already described for regressive barriers, showing variation in the value of the amplitudes (decrease or increase), together with the variation in the degree of compaction, which evidences in subsurface the change between the environments of foredune ridges, backshore/foreshore and upper and lower shoreface. The interference of humidity in attenuation of the signal in the studied data can be observed only in the first 0.5 m. Rainfall was not relevant for signal attenuation in the studied sandy deposits with water level close to the surface. The analysis of the radargrams for all the antennas allowed the identification of the patterns of reflectors already described for the environments of the study area and the central frequency antenna of 200 MHz showed the highest resolution for the definition of all the environments.

Na barreira regressiva da Pinheira, são reconhecidos quatro ambientes deposicionais costeiros, caracterizados por parâmetros geológicos como a análise de litofácies, estruturas sedimentares, grau de compactação e conteúdo de moluscos. Informações que são analisadas em conjunto com imagens de dados geofísicos obtidas com o método do Radar de Penetração no Solo (GPR – Ground Penetrating Radar) para determinar esses ambientes. O presente trabalho visa a caracterização destes ambientes deposicionais através da análise da amplitude do sinal em traços de antenas com frequências centrais de 80, 100, 200 e 400 MHz em conjunto com os dados de compactação e litológicos de um furo de sondagem. E também mostra o comportamento da atenuação do sinal em relação a umidade presente no ambiente. A análise dos traços permitiu a identificação dos contatos entre os ambientes já descritos para barreiras regressivas, mostrando variação no valor das amplitudes (decréscimo ou aumento) em conjunto com a variação no grau de compactação, que evidenciam em subsuperfície a mudança entre os ambientes de cordões litorâneos, backshore/foreshore e shoreface superior e inferior. A interferência da umidade na atenuação do sinal nos dados analisados pode ser observada apenas nos primeiros 0,5 m. Demonstrando que a pluviosidade não é um fator de relevância para atenuação do sinal em ambientes arenosos onde o nível da água é próximo a superfície. A análise dos radargramas para todas as antenas, permitiu a identificação dos padrões de refletores já descritos para os ambientes da área de estudo e a antena com frequência central de 200 MHz apresentou maior resolução para a definição de todos os ambientes. / In the Pinheira regressive barrier, four coastal depositional environments are recognized, characterized by geological parameters such as lithofacies analysis, sedimentary structures, compaction degree and set of mollusks. Information that is analyzed together with images of geophysical data obtained with the Ground Penetrating Radar (GPR) method to determine these environments. The present work aims to characterize these depositional environments by analyzing the signal amplitude in traces with central frequencies antennas of 80, 100, 200 and 400 MHz in conjunction with the compaction and lithological data of a drill hole. It also shows the behavior of signal attenuation in relation to the humidity present in the environment. The analysis of the traces allowed the identification of the contacts between the environments already described for regressive barriers, showing variation in the value of the amplitudes (decrease or increase), together with the variation in the degree of compaction, which evidences in subsurface the change between the environments of foredune ridges, backshore/foreshore and upper and lower shoreface. The interference of humidity in attenuation of the signal in the studied data can be observed only in the first 0.5 m. Rainfall was not relevant for signal attenuation in the studied sandy deposits with water level close to the surface. The analysis of the radargrams for all the antennas allowed the identification of the patterns of reflectors already described for the environments of the study area and the central frequency antenna of 200 MHz showed the highest resolution for the definition of all the environments.

Na barreira regressiva da Pinheira, são reconhecidos quatro ambientes deposicionais costeiros, caracterizados por parâmetros geológicos como a análise de litofácies, estruturas sedimentares, grau de compactação e conteúdo de moluscos. Informações que são analisadas em conjunto com imagens de dados geofísicos obtidas com o método do Radar de Penetração no Solo (GPR – Ground Penetrating Radar) para determinar esses ambientes. O presente trabalho visa a caracterização destes ambientes deposicionais através da análise da amplitude do sinal em traços de antenas com frequências centrais de 80, 100, 200 e 400 MHz em conjunto com os dados de compactação e litológicos de um furo de sondagem. E também mostra o comportamento da atenuação do sinal em relação a umidade presente no ambiente. A análise dos traços permitiu a identificação dos contatos entre os ambientes já descritos para barreiras regressivas, mostrando variação no valor das amplitudes (decréscimo ou aumento) em conjunto com a variação no grau de compactação, que evidenciam em subsuperfície a mudança entre os ambientes de cordões litorâneos, backshore/foreshore e shoreface superior e inferior. A interferência da umidade na atenuação do sinal nos dados analisados pode ser observada apenas nos primeiros 0,5 m. Demonstrando que a pluviosidade não é um fator de relevância para atenuação do sinal em ambientes arenosos onde o nível da água é próximo a superfície. A análise dos radargramas para todas as antenas, permitiu a identificação dos padrões de refletores já descritos para os ambientes da área de estudo e a antena com frequência central de 200 MHz apresentou maior resolução para a definição de todos os ambientes. / In the Pinheira regressive barrier, four coastal depositional environments are recognized, characterized by geological parameters such as lithofacies analysis, sedimentary structures, compaction degree and set of mollusks. Information that is analyzed together with images of geophysical data obtained with the Ground Penetrating Radar (GPR) method to determine these environments. The present work aims to characterize these depositional environments by analyzing the signal amplitude in traces with central frequencies antennas of 80, 100, 200 and 400 MHz in conjunction with the compaction and lithological data of a drill hole. It also shows the behavior of signal attenuation in relation to the humidity present in the environment. The analysis of the traces allowed the identification of the contacts between the environments already described for regressive barriers, showing variation in the value of the amplitudes (decrease or increase), together with the variation in the degree of compaction, which evidences in subsurface the change between the environments of foredune ridges, backshore/foreshore and upper and lower shoreface. The interference of humidity in attenuation of the signal in the studied data can be observed only in the first 0.5 m. Rainfall was not relevant for signal attenuation in the studied sandy deposits with water level close to the surface. The analysis of the radargrams for all the antennas allowed the identification of the patterns of reflectors already described for the environments of the study area and the central frequency antenna of 200 MHz showed the highest resolution for the definition of all the environments.

Little attention has been paid in Canadian Child Welfare research to the role that training plays in engaging new workers as they enter the complex role of child protection. Focusing on learning principles such as child neglect and working with an ethno-racial Other, it was important to understand what workers took away from their engagement in training and how this was implemented in practice. A mixed methods approach using critical analysis of the OACAS Handouts was used to inform the Semi Structured Interviews conducted with frontline C.A.S. workers. Critical Race Analysis provides theoretical foundation to understand how the ethno-racial other is perceived and enacted in discourse that workers take away into practice. Findings suggest that C.A.S. workers have a conflicted view of training due to the nature and context in which they practice. Aside from the benefits of training, workers have a lot to say about how it could be structured in order to benefit practice. Workers also have complex and conflicting views on neglect, some of which are learned through training and then exacerbated through practice. Workers practice principles on engaging with an ethno-racial other was not influenced through training, but through their own learning processes as influenced by practice and earlier education. These factors relating to child welfare workers can help influence future training within C.A.S. organizations across Canada. / Thesis / Master of Social Work (MSW)

En compétition comme à l’entrainement, le comportement des nageurs émerge de l’interaction entre les ressources des nageurs et les contraintes éprouvées (organismique, environnementale et de tâche). L’objectif de ce travail est d’analyser la variabilité intra et inter-individuelle des aspects cinématiques du mouvement des nageurs en compétition et à l’entrainement. Nos résultats montrent l’existence d’une stabilité inter-longueur et une variabilité fonctionnelle intra-longueur dépendantes de la distance de l’épreuve, du genre et des différentes parties de la course en compétition. Les profils de gestion de course singuliers dépendent probablement des ressources mobilisables émotionnelles, cognitives, métaboliques et techniques. Les adaptations du nageur au cours d’un test maximal (9 X 25m) sans fatigue avec incrémentation aléatoire de la fréquence de nage a révélé la difficulté des nageurs à respecter des fréquences imposées situées au-delà de leurs fréquences préférentielles, et ce, surtout chez les nageuses. Pour les nageurs masculins, les fréquences éloignées des fréquences préférentielles ont induit une désorganisation motrice caractérisée par une augmentation des accélérations latérales et verticales. Ce travail propose des nouvelles pistes d’entraînement comme le travail individuel des stratégies de course inter et intra longueurs, et l’intérêt d’élargir la gamme de fréquences sollicitées afin d’acquérir une technique stable et économe, mais variable et adaptable en même temps. Cette variabilité faciliterait la mobilisation de leurs ressources pour développer une capacité et une flexibilité adaptatives permettant de surmonter les contraintes éprouvées. / In swimming competition just like in training, swimmers’ behaviours emerge from the interaction of constraints (organismic, environmental, and task). The aim of this work is to analyse the intra and inter-individual variability of the cinematic aspects of the movement of swimmers during competition and training. Our results have shown there is inter-lap stability and intra-lap functional variability in competition which depends on the distance of the race, the gender and the lap. Singular pacing profiles was discovered suggesting swimmers manage their speed differently depending on the available resources to deal with the race constraints. The swimmers’ adaptations at training during a protocol of 9 X 25m whilst increasing the stroke rate and the swimmers’ ability to respect an imposed frequency range was assessed, as well as the stroke rate amplitude range from the preferential and maximal stroke rate. Upon completion of the trials, the impact of stroke rate amplitude ranges on motor adaptability (coordination, efficiency) was evaluated. The difficult for all swimmers when performing above their preferential stroke rate, particularly for female athletes has been found and male swimmers exhibited disruption in forearm acceleration beyond their preferential stroke rate. This work proposes news paths for swimming training: working race strategies and training beyond the preferential stroke rate can allows swimmers to have a stable technique with a certain variability. This variability would give to swimmers the ability and flexibility to adapt and cope with constraints using their individual resources. / Durante la competencia o al entrenamiento, el comportamiento del nadador aparece de la interacción entre los recursos de él y sus restricciones encontradas (organísmicas, ambientales, y de acción). El objetivo de este trabajo es de analizar la variabilidad individual del aspecto cinemático del movimiento de nadadores en competencia y al entrenamiento. Nos resultados muestran la existencia de una estabilidad entre los largos y una variabilidad funcional al interior de cada largo, la cual depende de la distancia, el tipo de prueba, el género y de las diferentes partes de la carrera en situación de competencia. Los modelos singulares de la gestión de la carrera dependen probablemente de los recursos utilizados emocionales, cognitivos, metabólicos y técnicos. Las adaptaciones durante un test de sprint sin fatiga (9 X 25m) con una incrementación aleatoria de la frecuencia de nado han mostrado la dificultad de los nadadores a guardar la frecuencia pedida cuando es superior a la frecuencia preferencial (FRP), sobre todo en las nadadoras. Las frecuencias alejadas de la FRP inducen una desorganización motriz aumentación de aceleraciones laterales y verticales en los nadadores masculinos. Este trabajo propone nuevas pistas para el entrenamiento como el trabajo individual de las estrategias de carrera entre y al interior de cada largo, o el interés de aumentar el rango de frecuencias solicitado con el objetivo de adquirir una técnica estable y económica, así como variable y adaptable. Esta variabilidad facilitaría a los nadadores la movilización de sus recursos para desarrollar une capacidad a ser flexible y adaptativo, lo que podría permitir de superar las adversidades encontradas.