94 research outputs found

    The seroepidemiology of a neglected zoonotic and livestock pathogen in free-ranging bovids : Leptospirosis in African buffaloes (syncerus caffer)

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    Funding: This research was funded by Wellcome Trust, grant number 216634/Z/19/Z to M.H.M and grant number 222941/Z/21/Z to W.G. Sample collection and W.G, T.K., and M.M. were funded by the South African government through the South African Medical Research Council and the National Research Foundation South African Research Chair Initiative [grant #86949]. The APC was funded by the Wellcome Trust. Author Contributions: Conceptualization, M.H.M., W.G. and M.M.; methodology, M.H.M., W.G., A.P. and M.M.; formal analysis, M.H.M. and W.G.; writing—original draft preparation, M.H.M.; writing—review and editing, W.G., A.P., T.J.K. and M.M.; visualization, M.H.M.; supervision, M.M.; project administration, M.H.M. and M.M.; funding acquisition, M.H.M. and M.M. All authors have read and agreed to the published version of the manuscript.Peer reviewe

    Exploring the recognition of talents: Identifying the prototype

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    To be successful and survive, entrepreneurs are encouraged to exploit their talents as element of their human capital nourishing the entrepreneurial process. Since education became an important aspect of society, teachers have a prelove for highly talented students. Especially young talented people relish profound attention of universities, firms, music ensembles, sports societies and artist groups. In entrepreneurship education students are encouraged to develop their unique strong point, named as talents. Around the globe, universities, institutes of higher and professional education provide students with programs for talent development and exploitation. Practitioners and educators complain on a regular basis that students rarely aware of what their talents are. It is experienced as difficult to identify them. In congruence with the entrepreneurial process of Shane and Venkataraman (2000) this paper explores the possibility for mechanisms to identify, or recognize, a talent. Scholars and consultants developed many instrument on the development and exploitation of talents. But how can talents are identified? In this paper the fuzzy front end of talent recognition will be fostered. It is advocated that the psychological cognitive prototyping principles can be applied to identify the prototype of a talent. The findings show a clear acceptance on the design of a prototype of talents in an entrepreneurial setting. Nevertheless it is also advocated that the findings can be applied in more than the entrepreneurial or business context.Product Innovatie ManagementIndustrial Design Engineerin

    Towards a Methodology to Identify a Talent by Using Psychological Cognitive Prototyping

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    Since education became an important aspect of society, teachers have a prelove for highly talented students. Especially young talented people relish profound attention of universities, firms, music ensembles, sports societies and artist groups. In higher education, students are encouraged to develop their unique strong point, named as talents. Around the globe, universities, institutes of higher and professional education provide students with programs for talent development and exploitation. Practitioners and educators complain on a regular basis that students rarely aware of what their talents are. It is experienced as difficult to identify them. This paper explores the possibility for mechanisms to identify, or recognize, a talent. Scholars and consultants developed many instrument on the development and exploitation of talents. But how can talents be identified? In this paper the fuzzy front end of talent recognition will be fostered. It is advocated that the psychological cognitive prototyping principles can be applied to identify the prototype of a talen

    Voertuig

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    Industrial Design Engineerin

    Exploring the Different Patterns of Entrepreneurial Exit: The Causes and Consequences

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    Since the phenomena of entrepreneurship became popular among scholars and politicians, it seems that it is addressed as "golden formula" for economic growth, regional development and personal wellbeing. Success is motivating and for any reason, maybe because of the Angelo-American dominance in this field, failure is not an option. From qualitative research it is known that before one single entrepreneurial success, many failures are to overcome first. Especially in the start-up phase of entrepreneurship the unwanted exit occurs in most cases. In the non-American part of the world, failure as an entrepreneur is not only a financial deception; it is often experienced as an emotional and social disaster with hugh negative impact on further social and professional career. This paper wants to contribute to the knowledge and insights on the causes and effects of entrepreneurial exit scenarios. This might shed some light on the dark sides of entrepreneurship and give opportunities to designers of support-systems for starting entrepreneurs and curricula of universities and colleges to prevent young nascent entrepreneurs for a tragic and traumatic entrepreneurial exit experience.Product Innovatie ManagementIndustrial Design Engineerin

    Coal by IWT in India: Initial optimization study of inland waterway coal transportation from Cochin to Kayamkulam, India

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    The demand for electric power in India has been growing steeply during the past decade particularly in the rapid industrialising southern regions and power shortages are frequently experienced. In order to cope with this problem, several coal burning power stations will be constructed along the west coast of India. One of the projected sites for a power station is at Kayamkulam, supplied by coal from Talcher mines in the north east. The Central Electricity Authority established that the least coal transport costs from Talcher (Port of Paradip) to the coastal power stations is by means of sea transport. Different coal unloading locations have been put forward for consideration for the Kayamkulam powerplant. One of these locations is at the existing port of Cochin (110 km north of Kayamkulam). Furthermore several ways for transporting the coal from the coal unloading terminal at Cochin to the powerplant site have been considered : slurry pipe, rail and inland waterway transport. In the assessment of alternatives concerning the coal transport scenarios for the Kayamkulam powerplant it has been required to perform a more detailed assessment of the option by which coal will be unloaded at the existing port of Cochin and further transported by Inland Waterway Transport (IWT) to the Kayamkulam plant site. The objective of this study is to assess constraints and opportunities concerning the transportation of the projected coal throughput of 8.06 million tons per year from the coal unloading terminal at Cochin to the projected powerstation at Kayamkulam by IWT using the existing West Coast Canal; and to select the most promising scenario for this transport system on basis of technical feasibility and costs. To meet the objective an inventory of the existing situation has been made and constraints and bottlenecks have been identified. Main constraints are the inadequate waterway dimensions and the restricted dimensions of the existing locks at Thanneermukkom and Trikkunnapuzha. It is concluded that the existing waterway is not suitable for the transportation of the required throughput of 8.06 million tons per year. Improvement scenarios have been generated and it is concluded that feasibility of the transport scenario requires the deletion of the existing locks at Trikkunnapuzha from the system, the construction of new locks at Thanneermukkom and extensive capital dredging works. I Several options for the coal carrying vessels have been considered i.e.: -self propelled vessels, ranging from 600 to 2,250 tons -push formations, ranging from 3,500 to 11,200 tons. These options have been analyzed with respect to the required -waterway improvements -Ioading- and unloading terminal -fleet composition Further, a distinction has been made between daytime only and dav and night navigation. Costs for each option have been determined in order to make a comparison between the options. Based on these analyses, the preferred option for the transportation of the required throughput of 8 mmtpa, is the use of self propelled IWT vessels having a payload of 2,250 tons. The total coal transportation cost for the 8 mmtpa are estimated to be US$ 4.0 per ton.Hydraulic EngineeringCivil Engineering and Geoscience

    Exploring the prevention measures for prematuraty negative entrepreneurial exit?

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    In the last decade, directed from the European Union, entrepreneurship and entrepreneurship education became a main topic on both, political and strategic managerial agenda’s. Despite the enormous effort and money invested, the failure rate of starting entrepreneurs seems to be stable. Next to an increase of starting entrepreneurs, more young people are faced with the trauma of an entrepreneurial failure. This paper want to explore the causes of a negative entrepreneurial outcome an the possibilities to prevent from this.Product Innovatie ManagementIndustrial Design Engineerin

    Development of the near wake behind a horizontal axis wind turbine - including the development of a free wake lifting line code

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    A lot of research has been carried out in the past on wind turbine wake aerodynamics. Models exist for both the near field and the far wake. The near wake is governed by a typical vortex structure that gradually decays due to viscous and turbulent mixing effects, forming the less structured far wake region. The formation of the far field from the rotor region and near wake is not completely understood yet. In this thesis an attempt is made to develop a simple model that tries to capture the decay of the vortex wake within the first two diameters downstream of the rotor. A free wake lifting line vortex model has been developed. Viscous effects have been added to the vortex code in the form of vortex core models and a simple model that describes the turbulent decay of circulation as a function of ambient turbulence intensity. Furthermore models for simulating wind shear and the presence of the nacelle have been implemented. A thorough validation study of the model has been carried out by means of hot-film and Particle Image Velocimetry (PIV) measurements. Close to the rotor the model compares well with the induced velocities measured with a hot-film. PIV measurements show that the model captures the position of the tip vortex quite well within the first diameter downstream. The measured velocity field can however not be reproduced correctly by the code. No measurements were available that can validate the turbulent decay of the vortex wake; instead suggestions are made for an experiment in the Open Jet Facility of the faculty of Aerospace Engineering The new model is only valid in the region of the wake where the vortex structure of the wake is still in tact which is typically between one or two diameters downstream. Further downstream the outputs from the model may be used as an input for a Reynolds Averaged Navier-Stokes (RANS) model that describes the far wake of the rotor.AEWE - WindenergyAerospace Engineerin
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