This paper introduces an efficient and spontaneous privacy-preserving protocol for vehicular ad-hoc networks based on revocable ring signature. The proposed protocol has three appealing characteristics: First, it offers conditional privacypreservation: while a receiver can verify that a message issuer is an authorized participant in the system only a trusted authority can reveal the true identi...

Membrane distillation has the potential to concentrate solutions to their saturation level, thus offering the possibility to recover valuable salts from the solutions. The process performance and stability, however, is strongly dependent upon the features of membranes applied. In addition, several other parameters, membrane thickness and thermal conductivity significantly affect the process per...

assessment of rangeland ecological characteristics have been proposed as an important factor in reviewing and monitoring the effects of various management measures and it demands different tools for quantifying and offering a reasonable criterion for comparison of different managements. for this purpose, the landscape function analysis (lfa) method is capable of displaying the structural and fu...

The spread of advanced information technologies introduced a broader conception of identity, which now includes the representation of people in the virtual environment. As a result, today we can see that identity can be defined both in technology and sociology-oriented terms. Different organisations assign identities to the individuals they interact with and manage them by means of technical so...

nowadays, by increasing the emphasis on the environmental protection by organizational stakeholders, including government, customers, employees, competitors and communities, environmental management is becoming more important for corporations. integrating environmental management techniques along the supply chain is an appropriate method for enhancing the environmental performance of an industr...