83 resultados para Obstacles

em Deakin Research Online - Australia


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As the Internet becomes a mainstream conduit for business and communication, it can no longer be referred to as a “ lawless frontier" (De Zwart 1999, 112). The laws that regulate this environment, however, are not always obvious, particularly to reporters who have to collect stories for online newspapers, which are facing competition from their traditional sources of information. This article uses a case study of on-line sport to examine the legal pitfalls facing journalists reporting on-line.

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Electronic communications have become the most important kind of communications in business. However, trust, privacy and security have become the great challenges for business and governments around the globe. The Public Key Infrastructure (PKI) model tries to solve these issues and make the Internet more secure. This paper explains the main purposes of PKI and addresses some of the major issues and obstacles that face PKI technology today.

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This paper describes the methodology for identifying moving obstacles by obtaining a reliable and a sparse optical flow from image sequences. Given a sequence of images, basically we can detect two-types of on road vehicles, vehicles traveling in the opposite direction and vehicles traveling in the same direction. For both types, distinct feature points can be detected by Shi and Tomasi corner detector algorithm. Then pyramidal Lucas Kanade method for optical flow calculation is used to match the sparse feature set of one frame on the consecutive frame. By applying k means clustering on four component feature vector, which are to be the coordinates of the feature point and the two components of the optical flow, we can easily calculate the centroids of the clusters and the objects can be easily tracked. The vehicles traveling in the opposite direction produce a diverging vector field, while vehicles traveling in the same direction produce a converging vector field

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Maintaining low body weight for the sake of performance and aesthetic purposes is a common feature among young girls and women who exercise on a regular basis, including elite, college and high-school athletes, members of fitness centres, and recreational exercisers. High energy expenditure without adequate compensation in energy intake leads to an energy deficiency, which may ultimately affect reproductive function and bone health. The combination of low energy availability, menstrual disturbances and low bone mineral density is referred to as the ‘female athlete triad’. Not all athletes seek medical assistance in response to the absence of menstruation for 3 or more months as some believe that long-term amenorrhoea is not harmful. Indeed, many women may not seek medical attention until they sustain a stress fracture.
This review investigates current issues, controversies and strategies in the clinical management of bone health concerns related to the female athlete triad. Current recommendations focus on either increasing energy intake or decreasing energy expenditure, as this approach remains the most efficient strategy to prevent further bone health complications. However, convincing the athlete to increase energy availability can be extremely challenging.
Oral contraceptive therapy seems to be a common strategy chosen by many physicians to address bone health issues in young women with amenorrhoea, although there is little evidence that this strategy improves bone mineral density in this population. Assessment of bone health itself is difficult due to the limitations of dual-energy X-ray absorptiometry (DXA) to estimate bone strength. Understanding how bone strength is affected by low energy availability, weight gain and resumption of menses requires further investigations using 3-dimensional bone imaging techniques in order to improve the clinical management of the female athlete triad.

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Small businesses are the heart of the market-based economy with their business operations in rural and urban areas of developed and developing countries. In Bangladesh, small business enterprises are playing a significant role by contributing to the production and services, employmnet and thereby to GDP. But these are found to face servere competition and different types of constraints. As a result, these have not achieved substantial growth. In view of this, the present study is primarily aimed at identifying factors and obstacles that influence the growth of SBEs. Finally, the paper suggests some policy measures which are expected to excel the growth of SBEs.

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Purpose - Applying theories of entrepreneurship, the paper aims to identify the factors - with theoretical explanations - that act as barriers to migrant women entrepreneurs (MWEs), particularly women from developing countries starting businesses in developed economies. The paper further explores which barriers also have the potential to act as enablers.

Design/methodology/approach - The relationship between immigration, ethnicity, gender and entrepreneurship has received little theoretical attention. Linking these discourses, the paper theoretically develops a framework of the possible barriers or enablers faced by MWEs.

Findings - The paper reinforces earlier research that MWEs are not a homogenous group; the problems they face are multifaceted, and MWEs from developing countries are the most disadvantaged of entrepreneurs. It identifies multiple factors - human capital, culture, family, institutional factors, gender and social capital- as possible barriers for MWEs. Findings further indicate, that among those barriers, culture, family, social capital and gender have the potential to play a dual role for MWEs, by acting either as a barrier or an enabler. Findings also highlight the overarching and predominant influence of culture – as explained by cultural theory -acting as a barrier for MWEs from developing countries.

Research limitations/implications - Given the increasing potential of MWEs, the paper provides implications for not only addressing the barriers but also viewing the barriers as ways to promote entrepreneurship among such minority groups. It further stresses a needs-based approach to customizing policies to benefit the diverse group of MWEs. Limitations: This is a theoretical paper. Empirical research is needed to test the framework and its different dimensions. Given the diversity of MWEs and the factors that shape their entrepreneurial endeavours, it is difficult to develop a single framework to encompass the complexity of the situation. Nevertheless, the proposed framework provides useful insights into the barriers or enablers that MWEs face, along with theoretical explanations and, thus, acts as a springboard for future research.

Originality/value - By providing a theory-based framework of the barriers or enablers faced by MWEs, along with policy implications, the paper contributes to a better understanding of the phenomenon of migrant women entrepreneurship.

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Biodiversity offsets can be an important tool for maintaining or enhancingenvironmental values in situations where development is sought despite negativeenvironmental impacts. There are now approximately 45 compensatory mitigationprograms for biodiversity impacts worldwide, with another 27 programs in development. While offsets have great potential as a conservation tool, their establishment requires overcoming a number of conceptual and methodological hurdles. In Australia, new policy changes at the national and state (i.e., Western Australia) level require that offsets follow a set of general principles: (1) Environmental offsets may not be appropriate for all projects and will only be considered after avoidance and mitigation options have been pursued;(2) Environmental offsets will be based on sound environmental information andknowledge; (3) Establishing goals for offsets requires an estimate of expected direct and indirect impacts; (4) Environmental offsets will be focused on longer term strategic outcomes; (5) Environmental offsets will be cost-effective, as well as relevant and proportionate to the significance of the environmental value being impacted. Here we focus on the challenges of determining and implementing offsets using a real world example from a voluntary offset process undertaken for Barrick Gold’s Kanowna Belle mine site in Western Australia to highlight those challenges and potential solutions.