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Purpose As mobile devices are in widespread use and location-based mobile advertising has grown rapidly in recent years, there exists a sharp increase among researchers as well as practitioners in the interest in the determinants of user’s attitudes towards location-based Mobile advertising. The purpose of the research is to understand the predictors of attitudes towards location-based Mobile advertising and of the relationship between attitudes and behavioral intention. Design/methodology/approach To this end, we have conducted an online survey using 412 users who have the prior experience of viewing location-based advertising via their mobile devices. We excluded 31 invalid responses and performed an empirical analysis based on 381 responses. Findings The findings indicate that all the factors but ‘perceived enjoyment’ each have a significant, positive relationship with consumer attitudes towards location-based Mobile advertising. Furthermore, advertising attitude is positively associated with behavioral intention. We provide implications and future research directions based the research findings.
As the global concern increases rapidly on environmental protection associated CO₂emissions, the major car manufacturers in U.S.A., Europe and Japan have continuously strived to improve the automotive fuel efficiency for the past two decades. Vehicle weight reduction is one of the major methods for improvement of the automotive fuel efficiency. In recent years, there has been an increasing trend to use light metals and alloys for automotive components. Magnesium alloys have the lowest density (1.8g/cm³)among the commercially available structural metals and the excellent specific strength and stiffness. Magnesium alloys also have exceptional dimensional stability, excellent machinability, high damping capacity, high electrical and thermal conductivities, and good fatigue resistance. In the past decade, the demand and usage of the magnesium alloys have increased drastically for structural applications, particularly in the automotive industry. Most of the magnesium automotive industry. Most of the magnesium automotive components are manufactured by die casting process and, therefore, active researches are being carried out on melt protection, die design, and corrosion and mechanical property characterization. Furthermore, new alloys are being developed for improved corrosion resistance and mechanical properties and new processes including semi-solid processing are also under development for better production efficiency and product quality. In the present paper, the application status and manufacturing technologies of magnesium alloys for the automotive component are reviewed.
In this study, tensile tests were carried out at room temperature to evaluate the influence of δ precipitates on serration behavior of 2090 Al-Li alloy by using reversion heat treatment for the first time. The heat treatment conditions include solution heat treatment, aging and reversion heat treatment. Three different initial strain rates. 2×10^(-3)/sec, 2×10^(-4)/sec and 5×10^(-5)/sec, were used as experimental variables. For all heat treatment conditions, the serration amplitude increased, but the critical strain for the onset of serration decreased with decreasing strain rate. The aged specimen showed the highest serration amplitude and the lowest critical strain for the onset of serration at a given strain rate. The reversion heat treatment after aging decreased the serration amplitude and increased the critical strain for the onset of serration. The results indicate that serration behavior of 2090 Al-Li alloy is affected by work softening due to shearing of δ precipitates as well as by Portevin-Le Chatelier effect caused by the solute atoms.