In this article, we will discuss what is known about a surprisingly popular phenomenon in the Middle East-the use of social media to communicate. We will begin with a discussion of what "social media" sites are (sites such as Facebook, Your Middle East, YouTube, Flickr, Muslima.com, chat rooms, and instant messaging) and point out how common they are in the Middle East. Next, we will discuss th...

This report summarizes the work conducted under the 1 year Surface initiative project. Our goal was to explore the value proposition of adapting pen-centric mathematical sketching techniques to a hybrid pen and multitouch environment based on a Microsoft Surface. Our results were positively received during evaluation as participants commented that our Hands-On Math prototype not only made inter...

Building upon previous work on measuring the strength of graphical passwords we report on further analysis of statistical differences between Android’s graphical passwords collected in-lab via pen-and-paper surveys and those collected online via self-reporting on users own mobile device. Additionally, we conducted between group studies of demographic groups for online, self-reported patterns an...

Historically, pen lifts have been considered valuable predictors of simulation behaviour. Despite this belief, there exists only limited empirical data available to characterise the extent to which unexpected pen lifts contribute to evidence in support of simulation behaviour. This study was devised to examine the frequency with which pen-lifts are observed in a population of 2280 simulated sig...

Data from Brazilian researches that evaluated oral health of elderly people show a worrisome situation. The purpose of this study was to estimate the frequency of edentulism, analyze both the use and need profiles of prosthesis, calculate the DMFT index and check the condition of periodontal elderly residents in the Federal District. One hundred and forty women aged 60 years or above were exami...

This paper highlights the ways in which current computer interfaces impair the capture and refinement of knowledge. It defines an interaction paradigm “informal interaction”, and proposes that pen-based interfaces designed around the concept of informal interaction have the potential to overcome the current impediments. Finally, it identifies specific areas of research required to develop infor...

A unique nanoheterostructure, a boron-filled hybrid carbon nanotube (BHCNT), has been synthesized using a one-step chemical vapor deposition process. The BHCNTs can be considered to be a novel form of boron carbide consisting of boron doped, distorted multiwalled carbon nanotubes (MWCNTs) encapsulating boron nanowires. These MWCNTs were found to be insulating in spite of their graphitic layered...

Adaptive optics control using liquid filled membrane lens is based on the principle of deflection of polymeric membrane. Controlled deflection in membrane leads to controlled focal length. This enhances the focus tuning ability of the system at the same time make optical system compact and economical. The adjustment of fluid pressure helps to toggle between different field of view at the same t...

Let G be a finite group and S a subset of G. Then S is product-free if S ∩ SS = ∅, and S fills G if G∗ ⊆ S ∪ SS. A product-free set is locally maximal if it is not contained in a strictly larger product-free set. Street and Whitehead [J. Combin. Theory Ser. A 17 (1974), 219–226] defined a group G as filled if every locally maximal product-free set in G fills G. Street and Whitehead classified a...