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This paper aims to explore how nascent social businesses move beyond the incubation phase and it develops understanding of how early-stage social businesses access finance to achieve growth.

This exploratory and inductive study is based on four focus group discussions with early-stage social entrepreneurs, “successful” social entrepreneurs who had achieved growth, and social impact investors.

Social capital allows a social business founder to access financial capital to “prove their concept”, or to directly attract investment from family and friends for start-up costs. To gain funding, social entrepreneurs present the desired image of the heroic change-maker. Interestingly, creating the right impression is equally important in securing financial capital as the “hard-work” itself.

This study was conducted in London, which, like many other “global” cities, has a unique business environment. The study is exploratory in nature. Further work in this area is required to draw more definitive conclusions.

Financial products offered to social businesses are often dispersed and inappropriate. The study indicates that access to “soft loans” and grants is critical in the early stages of social business growth and that social entrepreneurs use both formal and informal funding sources to develop their businesses. Where a person is not connected to wealthy acquaintances either through family, or through social networks, they may often struggle to access finance in a world where the network’s resources appear to be as important as the entrepreneur’s resourcefulness. This has particular implications for the demographic make-up of “successful social entrepreneurs” operating social businesses, as these may be drawn from the most privileged and/or well-connected members of a group which already appears skewed towards white middle-class males.

This study highlights that current support structures favour relatively privileged social entrepreneurs rather than encompassing and empowering those disadvantaged, social minority groups and those in the greatest need. This is important because social business is often portrayed, possibly incorrectly, as a mechanism for addressing poverty through empowerment of disadvantaged groups.

Research in social business development has largely neglected the social and cultural dynamics that embed start-ups. This paper tackles this gap and contributes to building knowledge in the area of early-stage social business development.

This paper aims to consider main challenges of development of advanced architectures of propulsion systems, i.e. distributed propulsion systems (DPS).

This paper is a comparative analysis of different types of DPS.

Mechanical driving DPS seems as more feasible in near-term outlook, and turboelectric and full electric DPS are imagined feasible in mid- and far-term outlook.

Additional comprehensive numerical and experimental researches are needed to approve the efficiency of DPS.

Possible impact of installation of DPS on aeroplane fuel efficiency are shown.

Application of DPS on long-range aeroplanes is new a engineering solution, which may allow to meet future advanced efficiency goals.

Variable density flows play an important role in many technological devices and natural phenomena. The purpose of this paper is to develop a robust and accurate method for low Mach number flows with large density and temperature variations.

Low Mach number approximation approach is used in the paper combined with a predictor-corrector method and accurate compact scheme of fourth and sixth order. A novel algorithm is formulated for the projection method in which the boundary conditions for the pressure are implemented in such a way that the continuity equation is fulfilled everywhere in the computational domain, including the boundary nodes.

It is shown that proposed implementation of the boundary conditions considerably improves a solution accuracy. Assessment of the accuracy was performed based on the constant density Burggraf flow and for two benchmark cases for the natural convection problems: steady flow in a square cavity and unsteady flow in a tall cavity. In all the cases the results agree very well with exemplary solutions.

A staggered or half-staggered grid arrangement is usually used for the projection method for both constant and low Mach number flows. The staggered approach ensures stability and strong pressure-velocity coupling. In the paper a high-order compact method has been implemented in the framework of low Mach number approximation on collocated meshes. The resulting algorithm is accurate, robust for large density variations and is almost free from the pressure oscillations.

The purpose of this paper is to conduct a review of types of tomographic systems that have been widely researched within the past 10 years. Decades of research on non-invasively and non-intrusively visualizing and monitoring gas-liquid multi-phase flow in process plants in making sure that the industrial system has high quality control. Process tomography is a developing measurement technology for industrial flow visualization.

A review of types of tomographic systems that have been widely researched especially in the application of gas-liquid flow within the past 10 years was conducted. The sensor system operating fundamentals and assessment of each tomography technology are discussed and explained in detail.

Potential future research on gas-liquid flow in a conducting vessel using ultrasonic tomography sensor system is addressed.

The authors would like to undertake that the above-mentioned manuscript is original, has not been published elsewhere, accepted for publication elsewhere or under editorial review for publication elsewhere and that my Institute’s Universiti Teknologi Malaysia representative is fully aware of this submission.