Quantum Key Distribution (QKD) is a nextgeneration security technology that exploits the properties of quantum mechanics to enable two parties to generate an unconditionally secure shared secret key. QKD is novel because its security is based upon the fundamental laws of quantum mechanics and not on computational complexity. QKD systems are composed of multiple interconnected electrical, optica...

While Peer-to-Peer (P2P) model gains significant attention in distributed computing, it is also expected to be a powerful model for information sharing. P2P systems are expected to provide exhaustive reliable computational resources and scalable accessibility. The data management and distribution in such systems requires storage, replication, data modeling, indexing, querying, retrieval, stream...

As the number of systems which offer annotations on digital documents increases, robust anchoring of annotations is a key challenge. It is especially important if the annotator lacks write-access to the document being annotated. For example, if someone makes an annotation on a web page today and the web page changes tomorrow, what happens to the annotation? One approach is simply to “orphan” th...

background and aims: in order to plan for preventing and decreasing the rate of nursing errors, understanding of nurse’s perception of nursing errors could be very helpful. this study was thus designed to examine the critical care nurses perception of nursing errors from view point of critical care nurses. methods: this study was conducted in 9 hospitals in qazvin province located in north of i...