203 research outputs found

    The Role of Education Pertaining to Female Political Leadership in Kenya

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    Female participation in leadership remains essential to ensure balanced decision-making and public outcomes. However, male dominance and gender stereotypes have been identified as significant barriers that hinder women from accessing political leadership. In contrast, little is known about the role of education in the ascension of women to leadership positions. This study examines the educational experiences of Kenyan female political leaders using a phenomenographic approach based on interviews. Findings indicated that education is an enabling factor for female leaders as it provides credibility, fosters knowledge seeking and decision-making skills. Informal educational activities impart leadership essential proficiencies such as communication skills. Teachers were found to be influential as mentors, while parents facilitated the effective engagement of female leaders in education

    Online Communities, Gen Y and Civic Engagement: An Investigation of Youth Leadership Development Potential in the Context of Social and Democratic Issues

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    Leadership is an extensively discussed and researched concept in scholarship. A vast amount of literature focuses on adult leadership, especially in a political and organizational context. Adult leadership places emphasis on the role of individual leaders, whilst youth leadership takes a participatory approach. Leadership scholars indicate that this participatory approach to youth leadership, involves young people addressing community concerns and at a civic level, engaging in planning and decision-making. Social participation traits and civic identity are developed during adolescence yet very little research has been undertaken in this area since the 1960s. This suggests that youth leadership is an overlooked research stream. Current studies on Gen Y indicate that this demographic are technologically proficient especially with regard to Web 2.0 tools, but also disengaged from their community. This research project examines the use of online communities to influence the leadership skills of a Gen Y cohort in the context of social participation and civic engagement. In this study a focus group and an online wiki were used to investigate how Gen Y teenagers in Wellington, New Zealand used online communities to develop and exercise their leadership skills through civic and social action endeavours. Results from the study indicate that youth leadership, in an online context, centres on the role of organisers who foster civic participation through online community networks. Thus youth leadership is strengthened through participation in civic and community issues using online communities. Adult perceptions of youth and the low credibility of online communities, as perceived by youth, were found to act as barriers to online youth leadership. The findings highlight the importance of adults acknowledging youth in social participation and civic endeavours. This study extends research in the youth leadership stream and enhances our understanding of Gen Y and their use of online communities

    Ontogenetic scaling patterns and functional anatomy of the pelvic limb musculature in emus (Dromaius novaehollandiae)

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    Emus (Dromaius novaehollandiae) are exclusively terrestrial, bipedal and cursorial ratites with some similar biomechanical characteristics to humans. Their growth rates are impressive, as their body mass increases eighty-fold from hatching to adulthood whilst maintaining the same mode of locomotion throughout life. These ontogenetic characteristics stimulate biomechanical questions about the strategies that allow emus to cope with their rapid growth and locomotion, which can be partly addressed via scaling (allometric) analysis of morphology. In this study we have collected pelvic limb anatomical data (muscle architecture, tendon length, tendon mass and bone lengths) and calculated muscle physiological cross sectional area (PCSA) and average tendon cross sectional area from emus across three ontogenetic stages (n = 17, body masses from 3.6 to 42 kg). The data were analysed by reduced major axis regression to determine how these biomechanically relevant aspects of morphology scaled with body mass. Muscle mass and PCSA showed a marked trend towards positive allometry (26 and 27 out of 34 muscles respectively) and fascicle length showed a more mixed scaling pattern. The long tendons of the main digital flexors scaled with positive allometry for all characteristics whilst other tendons demonstrated a less clear scaling pattern. Finally, the two longer bones of the limb (tibiotarsus and tarsometatarsus) also exhibited positive allometry for length, and two others (femur and first phalanx of digit III) had trends towards isometry. These results indicate that emus experience a relative increase in their muscle force-generating capacities, as well as potentially increasing the force-sustaining capacities of their tendons, as they grow. Furthermore, we have clarified anatomical descriptions and provided illustrations of the pelvic limb muscle–tendon units in emus

    Remarkable muscles, remarkable locomotion in desert-dwelling wildebeest

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    Large mammals that live in arid and/or desert environments can cope with seasonal and local variations in rainfall, food and climate1 by moving long distances, often without reliable water or food en route. The capacity of an animal for this long-distance travel is substantially dependent on the rate of energy utilization and thus heat production during locomotion—the cost of transport2,3,4. The terrestrial cost of transport is much higher than for flying (7.5 times) and swimming (20 times)4. Terrestrial migrants are usually large1,2,3 with anatomical specializations for economical locomotion5,6,7,8,9, because the cost of transport reduces with increasing size and limb length5,6,7. Here we used GPS-tracking collars10 with movement and environmental sensors to show that blue wildebeest (Connochaetes taurinus, 220 kg) that live in a hot arid environment in Northern Botswana walked up to 80 km over five days without drinking. They predominantly travelled during the day and locomotion appeared to be unaffected by temperature and humidity, although some behavioural thermoregulation was apparent. We measured power and efficiency of work production (mechanical work and heat production) during cyclic contractions of intact muscle biopsies from the forelimb flexor carpi ulnaris of wildebeest and domestic cows (Bos taurus, 760 kg), a comparable but relatively sedentary ruminant. The energetic costs of isometric contraction (activation and force generation) in wildebeest and cows were similar to published values for smaller mammals. Wildebeest muscle was substantially more efficient (62.6%) than the same muscle from much larger cows (41.8%) and comparable measurements that were obtained from smaller mammals (mouse (34%)11 and rabbit (27%)). We used the direct energetic measurements on intact muscle fibres to model the contribution of high working efficiency of wildebeest muscle to minimizing thermoregulatory challenges during their long migrations under hot arid conditions

    Inter-individual variability in load carriage economy and comparisons between different load conditions.

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    Equivocal findings exist for the economy associated with load carried close to the body's centre of mass. Individual variation could explain some of the equivocal findings. This research aimed to examine the extent of individual variation in loaded walking economy. Eighteen females carried load on the back, head and split between the front and back. Individual variation in relative load carriage economy (ELI) was primarily assessed using standard deviation, coefficients of variation (CV) and intraclass correlation coefficients (ICC). There was large inter-individual variation in ELI values with highest mean CV's of 16%, 12% and 10% for head-, back- and combined front and back-loading. Mean ELI values were not significantly different between methods. The large amount of individual variation found here suggests future load carriage research should account for individual variation, particularly when considering sample size and when making inferences on the economy associated with different types of load carriage using group mean data

    Effects of phylogeny and locomotor style on the allometry of body mass and pelvic dimensions in birds

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    The pelvic girdle provides physical support and attachment for the hind limb musculature. In birds there is variability in pelvic morphology across different orders and this has been used as evidence for various types of locomotion. However, the morphological variation of pelvic bones has yet to be studied systematically in birds. Therefore, we investigated basic allometric relationships among female body mass (as a size proxy) and various pelvic measurements in a phylogenetic context. We also examined in detail the inter-relationships among various pelvic measurements. Also considered were the effects of broader taxonomic relationships at the level of order, with further examination of the influence of style of terrestrial locomotion on the allometric relationships. Positive relationships were initially found among all pelvic linear measurements and female body mass FBM). The relationships among measures of pelvic width and FBM were isometric, whereas those between pelvic length and FBM showed positive allometry. Also, FBM explained more of the variance in pelvic length than in width. Similarly, the angle of the pelvis had a significant negative relationship, but FBM only explained a very low proportion of the variation in pelvic angles. In general terms, ANCOVA showed that the effect of FBM was smaller than the effect of locomotor style in this species set. Both the synsacrum and pelvic girdle play roles in weight support and therefore scale in proportion to body weight accordingly. All three parts of the pelvis (ilium, ischium and pubis) are attached around the acetabulum and also provide muscle attachment points, so it might be expected for them to scale in a similar manner. Increased angulation of the pelvis is linked to orders which employ their hind limbs in feeding, perching and running, although FBM also explains a very low proportion of the variation in pelvic angle. Muscle attachment and the confines on morphology presented by locomotion explain much of the variation exhibited by the relationships among pelvic measurements
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