Computational based cryptography might not guarantee long term security if computational algorithms, computers, and so on are made remarkable progress. Therefore, quantum cryptography with unconditionally security attracts attention. In this paper, we consider security of a two-way quantum key distribution protocol, so called Ping-Pong protocol. As a result, we introduce not only robustness but...

In the paper, we propose an efficient two-factor localised authentication scheme for inter-domain handover and roaming in IEEE 802.11 based service-oriented wireless mesh networks (WMNs). Some important aspects, such as resource-constraint Mobile Stations (MSs) and the ping-pong movement phenomenon when handover roaming across different hotspots occurs, are considered. An analytic model is deve...

The use of enzymes to catalyze chemical reactions has increased these recent years. Several models have been developed express the kinetics over biocatalysts. most well-known them, Michaelis-Menten, is used when only one substrate adsorbs on enzyme. In case esterification reaction, i.e., bimolecular system, a more complex kinetic model such as Ping-Pong Bi-Bi should be applied. advanced essenti...

This paper proposes a control system for lifting a ping-pong ball without the use of a camera. The system measures the time of collision between a plate and a ball with a microphone. The control system must then be able to direct both the position and the velocity of a motor for each subsequent collision, even if the model contains uncertainty or modeling errors. To achieve this objective, an o...

The interconnection networks and the communication system software are critical in achieving high performance in clusters. Sun Fire Link interconnect, is a memory-based interconnect, where the Sun MPI uses the Remote Shared Memory (RSM) model for its user-level inter-node messaging. This paper presents the overall architecture of the Sun Fire Link and its messaging layer. We provide an in-depth...

We describe here a very unusual case of a large free floating left atrial thrombus due to critical mitral stenosis detected by incidental echocardiography, in whom peculiar symptoms and complications of ball thrombus were absent. The patent's only symptom was mild dyspnoea attributed to smoking. She had no syncope or arrhythmia induced embolic event. Owing to non-availability of cardiothoracic ...

—Network densification through the deployment of large number of small cells has been considered as the dominant driver for wireless evolution into 5G. However, it has increased the complexity of mobility management, and operators have been facing the technical challenges in handover (HO) parameter optimization. The trade-off between the HO failure (HOF) rate and the ping-pong (PP) rate has fur...