Urban floods are detrimental to societies, and flood mapping techniques provide essential support for decision-making on the better management of risks. This study presents a GIS-based characterization methodology rapid efficient identification urban flood-prone areas, which is especially relevant large-scale hazards emergency assessments data-scarce studies. The results suggested that optimal ...

We study the extent to which we can infer users’ geographical locations from social media. Location inference from social media can bene€t many applications, such as disaster management, targeted advertising, and news content tailoring. In recent years, a number of algorithms have been proposed for identifying user locations on social media platforms such as TwiŠer and Facebook from message con...

Œe safety, reliability and usability of web platforms are o‰en compromised by malicious entities, such as vandals on Wikipedia, bot connections on TwiŠer, fake likes on Facebook, and several more. Computational models developed with large-scale real-world behavioral data have shown signi€cant progress in identifying these malicious entities. Œis tutorial discusses three broad directions of stat...

Search engines in online communities such as TwiŠer or Facebook not only return matching posts, but also provide links to the pro€les of the authors. Œus, when a user appears in the top-k results for a sensitive keyword query, she becomes widely exposed in a sensitive context. Œe e‚ects of such exposure can result in a serious privacy violation, ranging from embarrassment all the way to becomin...

BACKGROUND: In various people of the Western world, gastro-oesophageal reflux (GOR) has been reported to be a common problem. Various studies have also assessed the relationship between GOR and dental erosion. The authors are not aware of such studies in Nigerians. It is therefore the aims of the present study to estimate the prevalence of GOR; to estimate the prevalence of dental erosion in pa...