Non-repudiation is a security service that provides cryptographic evidence to support the settlement of disputes. In this paper, we introduce the state-of-the-art of non-repudiation protocols for multiple entities. We extend an existing multi-party non-repudiation (MPNR) protocol to allow an originator to send different messages to many recipients in a single transaction. We further propose an ...

The ECLIPSE project shows how concerns related to the complex behavior of telecommunication systems can be separated from concerns related to the IP implementation of that behavior. Within this context, the behavioral problems of Location and Identification, Switching and Spontaneous Conferencing, and Mail are addressed. Each of these features is challenging because it is not clear which functi...

Capacitive coupling and direct shuttling of charges in nanoscale plasmonic components across a dielectric spacer and through a conductive junction lead to excitation of significantly different dipolar and charge transfer plasmon (CTP) resonances, respectively. Here, we demonstrate the excitation of dipolar and CTP resonant modes in metallic nanodimers bridged by phase-change material (PCM) sect...

we solve the coupled mode equations governing the chalcogenide nonlinear fiber bragg gratings (fbgs) numerically, and obtain the bistability characteristics. the characteristics of the chalcogenide nonlinear fbgs such as: switching threshold intensity, bistability interval, on-off switching ratio are studied. the effects of fbg length and its third order nonlinear refractive index on fbg charac...

purpose – the aim of this study is to examine relation between employees’ participation in the organizations decisions making and their psychological empowerment in iran telecommunication company subsidiary of mazanderan province. design / methodology /approach- 250 employees from the iran telecommunication company subsidiary of mazanderan province participated in this study. a spearman's cor...

In this paper, a new structure is provided for the dispersion compensating photonic crystal fibers in order to broaden the chromatic dispersion and increase the dispersion compensating capability in a wide wavelength range. In the structure, putting a combination of circular holes and a star structure in the inner core clad causes the dispersion coefficient profile to be broadened, and addition...

Improving field performance of telecommunication systems is a key objective of both telecom suppliers and operators, as an increasing amount of business critical systems worldwide are relying on dependable telecommunication. Early defect detection improves field performance in terms of reduced field failure rates and reduced intrinsic downtime. Cost-effective software project management will fo...

This chapter addresses modern telecommunication integrated circuits from the synthesizer focal point; in particular it concentrates at the analysis and the design of integrated charge pump circuit blocks. It presents an overview of charge pump topologies in addition to a coherent analysis of the associated benefits and shortcomings of all circuit alternatives. Moreover a novel favorable charge ...

ACKNOWLEDGEMENTS Firstly, I would like to thank my advisor Dr. Jason Jue for giving me the guidance that have been instrumental in shaping my career. But for his invaluable advice and assistance it would not be possible for me to complete this thesis. I would also like to express my gratitude to Dr. Balaji Raghavachari and Dr. Gopal Gupta for giving me the opportunity to work with them as a res...