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Presbyopia is an age-related loss of accommodation of the human eye that manifests itself as inability to shift focus from distant to near objects. Assuming no refractive error, presbyopes have clear vision of distant objects; they require reading glasses for viewing near objects. Area-divided bifocal lenses are one example of a treatment for this problem.(More)
This paper employs a general equilibrium framework to analyze the effects on economic growth of global expansions in casino gaming, which exports gambling services largely to non-residents. Both domestic and foreign investments in the gaming sector bring in not only substantial revenues but also positive spillover effects on related sectors and even on the(More)
Automated border control gates are now being more and more deployed at airports to smooth border crossings with reduced man power and more convenience to the passenger. In order to use these new gates the traveler is required to present an electronic passport (e-Passport or biometric passport). Lots of efforts have been undertaken to improve the security of(More)
This article presents a trade based theory of casino taxation along with empirical evidence found from Macao as a typical tourism resort. We prove that there is a unique optimum gaming tax in a particular market for casino gambling, argue that any change in this tax is engendered by external demand shifts, and suggest that the economic rent from gambling(More)
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