An important element in understanding the evolutionary origin of human language is to explore homologous traits in cognition and communication between primates and humans (Burling, 1993, Hewes, 1973). One proposed modality of language evolution is that of gestural communication, defined as communicative movements of hands without using or touching objects (de Waal, 2003). While homologies between primate calls and language have been relatively well explored, we still have a limited understanding of how cognitive abilities may have shaped the characteristics of primate gestures (Corballis, 2003). Chimpanzees (Pan troglodytes) are our closest living relatives and display some complex cognitive skills in various aspects of their gestural behaviour in captivity (de Waal, 2003, Pollick and de Waal, 2007). However, it is not yet currently clear to what extent these abilities seen in captive apes are typical of chimpanzees in general and to what extent cognitive capacities observed in captive chimpanzees have been enhanced by the socio-cultural environment of captivity such as language training. In this Ph.D. research, I investigated the cognitive skills underlying gestural communication in both wild and language trained chimpanzees, with a special focus on the repertoire and the intentionality of production and comprehension. The study of cognitive skills underlying the production of the repertoire and the role of intentionality is important because these skills are cognitively demanding and are a prerequisite in human infants for their ability to acquire language (Baldwin, 1995, Olson, 1993). My research suggests that chimpanzee gestural communication is cognitively complex and may be homologous with the cognitive skills evident in pre-verbal infants on the cusp of language acquisition. Chimpanzees display a multifaceted and complex signal repertoire of manual gestures. These gestures are the prototypes, within which there is variation, and between which the boundaries are not clear-cut, but there is gradation apparent along several morphological components. Both wild and language trained chimpanzees communicate intentionally about their perceived desires and the actions that they want the recipients to undertake. They do not just express their emotions, but they communicate flexibly by adjusting their communicative tactics in response to the comprehension states of the recipient. Whilst chimpanzees communicate their intentions flexibly, the messages conveyed are specific. However, recipients comprehend gestures flexibly in light of the signaller’s overall intentions. Whilst wild and language trained chimpanzee gestural communication revealed similar cognitive characteristics, language trained chimpanzees outperformed wild apes in that they had ability to use signals which made distinctions that human deictic words can make. Whilst these differences between wild and language trained chimpanzees may be due to the different methodological approaches used, it is conceivable that language training may have influenced captive ape cognitive skills in the representational domain. These results from wild and language trained chimpanzees indicate that chimpanzees possess some form of cognitive skills necessary for language development and that cognitive skills underlying repertoire and use in chimpanzees are a shared capacity between humans, other apes and a common ancestor. These findings render theories of the gestural origins of language more plausible. Related publications: 1. Roberts, A. I., Vick, S.-J., Roberts, S. G. B., Buchanan-Smith, H. M. & Zuberbühler, K. 2012. A structure-based repertoire of manual gestures in wild chimpanzees: Statistical analyses of a graded communication system. Evolution and Human Behavior, Published online: http://dx.doi.org/ 10.1016/j.evolhumbehav.2012.05.006 2. Roberts, A. I., Vick, S.-J. & Buchanan-Smith, H. 2012. Usage and comprehension of manual gestures in wild chimpanzees. Animal Behaviour, Published online: http://dx.doi.org/10.1016/j.anbehav.2012.05.022

SUMMARY Lithuanian army physical training mission-is to form a healthy, strong, well physically prepared soldier, ready to fulfil all raised tactical assignments. The aim of this research was to evaluate the endurance of soldiers, developing the cardiovascular function abilities in performing of aerobic loads. Investigation was done in Kaunas city “Vytautas Magnus Keepers” battalion stadium. The request was given and the permission of the battalion commander was received in order to perform the biomedical research. Six athletes elevating high technique endurance participated in this research. The participants voluntarily agreed to perform the testing. All the participants (soldiers and runners) after the individual warming-up, ran a 5km cross-country (the task of the exercise was endurance training: even running in an aerobic zone). During the second research the runners were running a 12km cross-country (the task of the exercise was endurance training: even running in an aerobic zone). Using the heart rate (HR) pulse monitor “Polar-S810” The changes of HR was measured (the instantaneous account of HR and the average (HRmax), an account of the chosen length (each 1000m) and the duration (t) of chosen running length (each 1000m running length). The index of biological load value was counted of those registered indicators. In the third research the participants in LKKA laboratory of Kinesiology performed the search of qualification: the test of Roufier physical load, while... [to full text]

Face detection in video sequence is becoming popular in surveillance applications. The trade-off between obtaining discriminative features to achieve accurate detection versus computational overhead of extracting these features, which affects the classification speed, is a persistent problem. Two ideas are introduced to increase the features’ discriminative power. These ideas are used to implement two frontal face detectors examined on a 2D low-resolution surveillance sequence. First contribution is the parallel classifier. High discriminative power features are achieved by fusing the decision from two different features trained classifiers where each type of the features targets different image structure. Accurate and fast to train classifier is achieved. Co-occurrence of Local Binary Patterns (CoLBP) features is proposed, the pixels of the image are targeted. CoLBP features find the joint probability of multiple LBP features. These features have computationally efficient feature extraction and provide high discriminative features; hence, accurate detection is achieved.

No description available.

Background: The most common injuries in new or novice runners include medial tibial stress syndrome and patellofemoral pain syndrome; both overuse injuries. It is known that novice runners use a rearfoot strike pattern 98% of the time while running in traditional running footwear. Furthermore, footwear that is constructed with less cushioning (minimal shoes) and is said to promote forefoot running has increased in popularity. It is still unknown if novice runners convert their strike pattern in minimal shoes or continue to use a rearfoot strike pattern. Consequences of continuing to use a rearfoot strike pattern with less cushioning underfoot include higher vertical loading rates which are directly related to the types of injuries experienced. Aside from the strike pattern in a given shoe, movement stability is an important feature in healthy locomotion. There is a trade-off between being overly stable and being too unstable while running. It is known that the level of experience in running is related to the amount of stride length variability. It is still unknown if altering midsole stiffness has an effect on local dynamic stability while running. Purpose: The primary purpose of this thesis was to compare landing kinematics and kinetics between trained and novice runners in minimal and traditional shoes. The secondary purpose of this thesis was to examine the effect of running experience and midsole construction on local dynamic stability at the ankle, knee and hip. Methods: Twelve trained runners and twelve novice runners were recruited for participation. Four prototypical shoe conditions were tested with midsole geometry and material stiffness being manipulated. This yielded traditional/soft, traditional/hard, minimal/soft and minimal/hard shoe conditions. Participants ran down a 30m indoor runway which was instrumented with force platforms to measure vertical loading rates and motion capture cameras to capture landing kinematics. Participants also ran on a treadmill in each shoe condition to allow for local dynamic stability to be estimated at the ankle, knee and hip in the sagittal plane. Results: Novice runners landed with increased knee extension compared to trained runners. Increasing midsole thickness of the shoes caused an increase in dorsi-flexion of the ankle at heel strike. Manipulating material stiffness did not influence landing kinematics but did influence kinetics. Furthermore, decreasing material stiffness lowered vertical loading rates. Trained runners exhibited increased local dynamic stability (more stable) at the ankle, knee and hip compared to novice runners. Local dynamic stability was not affected by midsole stiffness. Conclusions: Novice runners did not alter their strike pattern in minimally constructed shoes. For this reason, cushioning properties of the shoe dictated vertical loading rates upon the body. Shoe conditions did not alter landing kinematics above the ankle, which is where the between group differences existed as novice runners landed with a more extended knee. Running experience appears to play a role in knee orientation at landing and is unaffected by shoe condition. Local dynamic stability was affected by running experience and does not appear to be related to the shoe condition being worn. Even when kinematics changed across shoe conditions, the stability of the movement did not.

Face detection in video sequence is becoming popular in surveillance applications. The trade-off between obtaining discriminative features to achieve accurate detection versus computational overhead of extracting these features, which affects the classification speed, is a persistent problem. Two ideas are introduced to increase the features’ discriminative power. These ideas are used to implement two frontal face detectors examined on a 2D low-resolution surveillance sequence. First contribution is the parallel classifier. High discriminative power features are achieved by fusing the decision from two different features trained classifiers where each type of the features targets different image structure. Accurate and fast to train classifier is achieved. Co-occurrence of Local Binary Patterns (CoLBP) features is proposed, the pixels of the image are targeted. CoLBP features find the joint probability of multiple LBP features. These features have computationally efficient feature extraction and provide high discriminative features; hence, accurate detection is achieved.

After immigrating to Canada, some foreign-trained professional women (FTPWs) enrol in adult high schoollevel upgrading to begin to reestablish their careers if their international credentials are unrecognized. To explore this phenomenon, the theoretical framework of possible selves was used as a mechanism to examine the effect of context (i.e., upgrading) on their personally relevant goals. Semistructured qualitative interviews were conducted with four FTPWs who attended two postsecondary institutes in central Alberta. The participants salient possible selves were related to familial duties and employment; they viewed upgrading as a mechanism to work toward these hoped-for selves. Upgrading was also found to increase the number of and clarify their hoped-for selves. Because of the significant impact of immigration on the participants possible selves, upgrading should also include referrals to immigration services and support for the credential assessment process, help to build confidence, and encourage the development of social networks for immigrants.

This qualitative modified participatory study underpinned by social critical theory explored the experiences of immigrant medical practitioners seeking registration in New Zealand. The occupational science notions of occupation, occupational deprivation and occupational apartheid were used to understand the experiences of the participants. The objective of the study was to understand the experiences of the participants and facilitate their self-empowerment through facilitated dialogue, affording them opportunities for collective action. Data was obtained through in-depth interviews and focus group discussions with eighteen immigrant medical practitioners who were doctors and dentists as well as two physiotherapists. The two physiotherapists were sampled out of necessity to explore diversity in findings. Transcripts were analysed using thematic analysis. This method included the processes of coding data into themes and then collapsing themes into major themes which were organised under categories. Four categories were created in the findings describing the experiences of immigrant practitioners and suggesting solutions. Firstly; findings revealed that immigrant medical practitioners had a potential worth being utilised in New Zealand. Secondly; it was found that these participants faced negative and disabling experiences in the process of being registered. Thirdly; the emotional consequences of the negative experiences were described in the study. Fourthly; there were collectively suggested solutions where the participants felt that their problems could be alleviated by support systems modelled in other Western English speaking countries that have hosted high numbers of immigrant medical practitioners from non-English speaking countries. This collective action was consistent with the emancipatory intent of participatory research informed by social critical theory. This study resulted in drawing conclusions about the implications of the participants’ experiences to well-being, occupational satisfaction as well as diverse workforce development initiatives. This study is also significant in policy making as it spelt out the specific problems faced by participants and made recommendations on what can be done to effectively utilise and benefit from the skills of immigrant medical practitioners. A multi-agency approach involving key stakeholders from the government departments, regulatory authorities, medical schools and immigrant practitioners themselves is suggested as a possible approach to solving the problems faced by these practitioners.

No description available.

O objetivo desse estudo foi verificar o efeito de diferentes volumes de treinamento de força na força máxima de membros inferiores e na hipertrofia do reto femoral e do vasto lateral após quatro, oito e doze semanas em indivíduos treinados em força. Vinte e seis indivíduos jovens saudáveis do sexo masculino (idade 23,6 ± 4,6 anos, massa corporal 76,6 ± 7,5 kg, estatura 1,75 ± 0,1 cm), com tempo médio de treinamento de força (4,7 ± 4,1 anos) foram divididos em três grupos experimentais, treinamento de força alto volume (TFAV, n = 8), treinamento de força médio volume (TFMV, n = 9) e treinamento de força baixo volume (TFBV, n = 9). As medidas de força dinâmica máxima (1RM) e de área de secção transversa muscular (ASTM) do reto femoral (RF) e do vasto lateral (VL) foram realizadas nos momentos pré- treinamento, pós quatro semanas, pós oito semanas e pós-treinamento. O volume total de treinamento apresentou aumento estatístico para todos os grupos TFAV (p < 0,0001), TFMV (p < 0,0001) e TFBV (p < 0,0001) ao longo do período experimental. Os valores de 1RM aumentaram de maneira significativa após a oitava semana de treinamento TFAV (11,8 ± 4,7%; p < 0,0001) e TFMV (12,1 ± 8,5%; p < 0,0001) e TFBV (9,6 ± 7,3%; p < 0,001) e no pós-treinamento TFAV (13,9 ± 3,9%; p < 0,0001), TFMV (16,7 ± 10,8%; p < 0,0001) e TFBV (14,0 ± 8,1%; p < 0,0001) para todos os grupos, porém não foi observado diferença entre os grupos. A ASTM do RF apresentou aumento estatístico no pós-treinamento somente para o grupo TFAV (15,0 ± 11,9%; p < 0,0001). Apenas o grupo TFAV aumentou estatisticamente a ASTM do VL após quatro semanas de treinamento (7,71 ± 4,42%; p < 0,0001), porém todos os grupos aumentaram significativamente a ASTM do VL após oito semanas de treinamento TFAV (11,37 ± 3,88%; p < 0,0001), TFMV (9,68 ± 9,36%; p < 0,0001) e TFBV (7,26 ± 3,15%; p < 0,01) e no pós-treinamento TFAV (14,54 ± 4,07%; p < 0,0001), TFMV (14,77 ± 8,24%; p < 0,0001) e TFBV (8,66 ± 3,97%; p < 0,001), porém não foi observado diferença entre os grupos. Os resultados do presente estudo demonstraram que, independente do volume adotado, os ganhos de força máxima foram semelhantes. Por outro lado, a ASTM foi influenciada pelo volume de treinamento, dado que o grupo TFAV foi o único que apresentou aumento significativo da ASTM do RF no pós-treinamento e aumentou a ASTM do VL com apenas quatro semanas de treinamento / The aim of this study was to investigate the effects of different strength training volumes on muscle strength and hypertrophy of the lower limbs after four, eight and twelve weeks of strength training in strength-trained individuals. Twenty-six healthy young males (age 23.6 ± 4.6 years, body mass 76.6 ± 7.5 kg, height 1.75 ± 0.1 cm), with an average experience of strength training (4.7 ± 4.1 years) were divided into three groups, high-volume strength training (TFAV, n = 8), mid-volume strength training (TFMV, n = 9) and low-volume strength training (TFBV, n = 9). Maximum dynamic strength (1RM) and muscle cross-sectional area (MCSA) of the rectus femoris (RF) and vastus lateralis (VL) were measured at baseline, after four weeks, after eight weeks and post-training. The total training volume significantly increased for the groups TFAV (p < 0.0001), TFMV (p < 0.0001) and TFBV (p < 0.0001) throughout the experimental period. The 1RM values increased after the eighth weeks of training, compared to baseline values, for the TFAV (11.8 ± 4.7%; p < 0.0001), TFMV (12.1 ± 8.5%; p < 0.0001), and TFBV (9.6 ± 7.3%; p < 0.001) groups, and post-training TFAV (13.9 ± 3.9%; p < 0.0001), TFMV (16.7 ± 10.8%; p < 0.0001) and TFBV (14.0 ± 8.1%; p < 0.0001) for all groups, with no difference between groups. Only TFAV group presented higher RF MCSA values at post-training (15.0 ± 11.9%; p < 0.0001). Furthermore, only TFAV significantly increased the VL MCSA after four weeks of training (7.71 ± 4.42%; p < 0.0001). All of the groups presented significantly greater VL MCSA than baseline values at eight weeks TFAV (11.37 ± 3.88%; p < 0.0001), TFMV (9.68 ± 9.36%; p < 0.0001) and TFBV (7.26 ± 3.15%; p < 0.01) and at post-training TFAV (14.54 ± 4.07%; p < 0.0001), TFMV (14.77 ± 8.24% ; p < 0.0001) and TFBV (8.66 ± 3.97%; p < 0.001), with no difference between groups. The results of this study demonstrated that, regardless of the adopted volume, the muscle strength gains were similar. On the other hand , MCSA was influenced by the training volume, since the TFAV was the only group that showed significant increase of RF MCSA post- training and increased VL MCSA with only four weeks of training