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 multi-party non-repudiation protocols, and analyze the previous work where one originator is able to send the same message to many recipients. We propose a new multi-party non-repudiation protocol for sending different messages to ...

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...

Software architecture plays an important role in determining software quality characteristics, such as maintainability, reliability, reusability, and performance. Performance effects of architectural decisions can be evaluated at an early stage by constructing and analyzing quantitative performance models, which capture the interactions between the main components of the system as well as the p...

The user authentication process is an important task in mobile networks. With the development of new standard Universal Mobile Telecommunication System (UMTS), the security weaknesses of previous standards are removed. However one security weakness has been found by researchers in UMTS, which is the sending of user's International Mobile Subscriber Identity (IMSI) in plain text over the air int...

This paper proposes an approach to the management of traffic in telecommunication networks. It was motivated by the growing need for Intelligent Network Management in current Telecommunication Networks such as PSTN, ISDN or transmission networks. The goal is to constantly act upon the network in order to control the traffic flow, trying to maximize the number of calls that reach destination or ...

This paper presents a study of base station system configurations for the Universal Mobile Telecommunication System (UMTS). The base station system (BSS), being the interface between the mobile terminal and fixed network, should be capable of handling a huge amount of traffic, mobility, and a high signaling load which is expected in the UMTS. Several functions that should be supported by BSS ar...

The papers in the series are intended for internal use and are distributed by the author. Copies may be ordered from the library of Department of Computer Science. Abstract Telecommunication networks produce large amounts of alarm information daily. This data contains potentially valuable knowledge about the network. We present a methodology for the analysis of large telecommunication networks ...

The computer and telecommunication industries rely heavily on knowledge-based expert systems to manage the performance of their networks. These expert systems are developed by knowledge engineers, who must first interview domain experts to extract the pertinent knowledge. This knowledge acquisition process is laborious and costly, and typically is better at capturing qualitative knowledge than ...

Large amounts of legacy software create a “barrier” for adoption of formal description techniques in the telecommunication industry. To overcome this barrier, algorithms and methods for automated re-engineering of legacy telecommunication software into formal specifications are required. In this paper we present a “dynamic scenario-based” approach to re-engineering of legacy telecommunication s...

The elicitation, modeling and analysis of requirements have consistently been one of the main challenges during the development of complex systems. Telecommunication systems belong to this category of systems due to the worldwide distribution and the heterogeneity of today’s telecommunication networks. Many proposals have been made for approaches that allow the developer to describe system beha...