86 research outputs found

    Place branding of seaports in the Middle East

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    This paper analyses seaports’ brand personalities as a means of understanding similarities and differences of these important locations and their relationship with their host place image. Drawing upon Aaker’s (J Mark Res 34:347–356, 1997) brand personality construct, the study presents lexical analysis from the websites of nine seaports in the Middle East. Each seaport’s website is content analysed, and the brand personality is measured using Aaker’s (1997) framework and Opoku’s (Licentiate Thesis, Lulea University of Technology, ISSN, 1402-1757, 2005) dictionary of synonyms. Findings show that seaports have developed a level of isomorphism upon particular dimensions of brand image; however, the findings also show the most distinctive seaports were linking their seaport to their place brand. In particular, the findings show only the Port of Jebel Ali has a clear and distinctive brand personality and to a lesser extent the Ports of Sohar, Shahid Rajee and Khor Fakkan. The research has important management implications of branding for public diplomacy and demonstrates seaport brand positioning in relation to place branding, used to inform public communication and marketing

    Diversities, affinities and diasporas: a southern lens and methodology for understanding multilingualisms

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    We frame multilingualisms through a growing interest in a linguistics and sociology of the ‘south’ and acknowledge earlier contributions of linguists in Africa, the Américas and Asia who have engaged with human mobility, linguistic contact and consequential ecologies that alter over time and space. Recently, conversations of multilingualism have drifted in two directions. Southern conversations have become intertwined with ‘decolonial theory’, and with ‘southern’ theory, thinking and epistemologies. In these, ‘southern’ is regarded as a metaphor for marginality, coloniality and entanglements of the geopolitical north and south. Northern debates that receive traction appear to focus on recent ‘re-awakenings’ in Europe and North America that mis-remember southern experiences of linguistic diversity. We provide a contextual backdrop for articles in this issue that illustrate intelligences of multilingualisms and the linguistic citizenship of southern people. In these, southern multilingualisms are revealed as phenomena, rather than as a phenomenon defined usually in English. The intention is to suggest a third direction of mutual advantage in rethinking the social imaginary in relation to communality, entanglements and interconnectivities of both South and North

    Chapitre 14: Phytopathogènes et stratégies de contrôle en aquaponie

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    peer reviewedAmong the diversity of plant diseases occurring in aquaponics, soil-borne pathogens, such as Fusarium spp., Phytophthora spp. and Pythium spp., are the most problematic due to their preference for humid/aquatic environment conditions. Phytophthora spp. and Pythium spp. which belong to the Oomycetes pseudo-fungi require special attention because of their mobile form of dispersion, the so-called zoospores that can move freely and actively in liquid water. In coupled aquaponics, curative methods are still limited because of the possible toxicity of pesticides and chemical agents for fish and beneficial bacteria (e.g. nitrifying bacteria of the biofilter). Furthermore, the development of biocontrol agents for aquaponic use is still at its beginning. Consequently, ways to control the initial infection and the progression of a disease are mainly based on preventive actions and water physical treatments. However, suppressive action (suppression) could happen in aquaponic environment considering recent papers and the suppressive activity already highlighted in hydroponics. In addition, aquaponic water contains organic matter that could promote establishment and growth of heterotrophic bacteria in the system or even improve plant growth and viability directly. With regards to organic hydroponics (i.e. use of organic fertilisation and organic plant media), these bacteria could act as antagonist agents or as plant defence elicitors to protect plants from diseases. In the future, research on the disease suppressive ability of the aquaponic biotope must be increased, as well as isolation, characterisation and formulation of microbial plant pathogen antagonists. Finally, a good knowledge in the rapid identification of pathogens, combined with control methods and diseases monitoring, as recommended in integrated plant pest management, is the key to an efficient control of plant diseases in aquaponics.Cos

    Design Optimization of a Submerged Entry Nozzle for Minimum Meniscus Turbulent Kinetic Energy

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    The paper describes the process to determine the optimum parameters of a Submerged Entry Nozzle (SEN) for minimum meniscus turbulent kinetic energy (i.e., stable meniscus) during the continuous casting of stainless steel slabs. Design variables include the port angle, port height and well depth of the SEN, while the effect of submergence depth is investigated. The SEN is designed for a width range of 1000 mm to 1300 mm, and a casting speed of 1.3 m/min. The Computational Fluid Dynamics (CFD) analysis of the mold and SEN for two slab widths is performed using the k-ω turbulence model and dynamic adaption of the mesh as in Fluent. The grid generation process is fully parameterized for twelve possible design variables and completely automated. The optimization is performed using LS-OPT’s Central Composite experimental design with 17 design points for the 3 design variables. Different objective functions are considered because of the transient nature of the mold and SEN flow field. Due to the high cost of the function evaluations, only one design iteration is performed. The CFD model is validated using water model results obtained with the University of Pretoria’s 40 % mold water model. The validation results show very good agreement of both the base and improved design between the CFD and water model. Fluent is used as the CFD solver. A limited investigation is performed of the robustness of the improved design. The results show that the standard deviation of the responses is about 10 % for all the responses when specifying the tolerances on the design variables expected during the manufacture of the SEN. 2. Keywords: Continuous caster submerged entry nozzle, optimizatio
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