This research investigates individuals’ everyday use of multiple electronic mail addresses. Email remains the dominant form of online communication. According to research by the Pew Internet & American Life Project, 93% of Internet users have sent or received email. [20] [15] In preliminary interviews I conducted, nearly all participants maintained multiple email addresses. These preliminary in...

Many people do not deliberately act to protect the data on their Smartphones. The most obvious explanation for a failure to behave securely is that the appropriate mechanisms are unusable. Does this mean usable mechanisms will automatically be adopted? Probably not! Poor usability certainly plays a role, but other factors also contribute to non-adoption of precautionary mechanisms and behaviour...

Stem cells are capable of renewing themselves through cell division and have the remarkable ability to differentiate into many different types of cells. They therefore have the potential to become a central tool in regenerative medicine. During the last decade, advances in tissue engineering and stem cell-based tooth regeneration have provided realistic and attractive means of replacing lost or...

We review concepts that provide an experimental framework for exploring the possibility and limitations of accessing energy from the space vacuum environment. Quantum electrodynamics (QED) and stochastic electrodynamics (SED) are the theoretical approaches guiding this experimental investigation. This investigation explores the question of whether the quantum vacuum field contains useful energy...

ballast as a part of the railway system plays an important role in the operation of the railways and also has a great impact on repair and maintenance activities. hence most of the repair and maintenance activities in traditional railway systems are due to the defections in the ballast layer and therefore most of the maintenance budget is spent on repairing these defects. these repair and maint...