The objective of the minimum toll revenue (MINREV) problem is to find tolls that simultaneously cause users to use the transportation network efficiently and minimize the total toll revenues that must be collected. This article investigates the Dantzig-Wolfe (DW) decomposition as an approach for solving the MINREV problem and establishes its relationships with a cutting plane algorithm and othe...

As Internet business exponentially grows, the need for high security level categories to identify groups of connections or individual transactions is manifest. The development of an efficient and secure communication protocol seems to be highly demanding. In this paper, we propose Adaptive Secure Protocol to support secure ecommerce transactions. Our Adaptive Secure Protocol dynamically adapts ...

One of the byproducts of increasing globalization is the intensified communication and economic exchange between countries. This is facilitated through modern forms of transportation and telecommunication which make it possible to bridge large distances in relatively short periods of time. Thus, interaction between very different cultures has become a common occurrence. Yet, the different ritua...

Daniel Guimarans , Silvia Padrón , Juan José Ramos , Salma Fitouri-Trabelsi 3 and Liana Napalkova 2 1 Optimisation Research Group, National ICT Australia (NICTA), 13 Garden Street, Eveleigh NSW 2015, Australia [email protected] 2 Dpt. Telecommunication and Systems Engineering, Universitat Autònoma de Barcelona, Emprius 2, 08202 Sabadell, Barcelona, Spain {silvia.padron, juanjose.ram...

The problem of finding a shortest path is common to many different fields including transportation systems, mechanical systems and computer communications. Most telecommunication industry protocols like PNNI, OSPF and IS-IS use Dijkstra’s algorithm or Bellman-Ford’s algorithm to solve the shortest path problem. Today shortest path computations are performed in software which is inefficient for ...

Information technology (IT) systems embedded into enclosing products are called “embedded systems”. Examples include information processing systems in transportation systems, telecommunication or automation. Recently, the term “cyberphysical system” has been proposed in the US. Reasons for proposing the new term include the need to represent complex information processing systems integrated wit...

The shortest path problem is common in many different fields (transportation systems, mechanical systems, etc). Most of the telecommunication industry protocols such as PNNI, OSPF and IISP use Dijkstra’s algorithm or Bellman-Ford’s algorithm to solve the shortest path problem. Today, the majority of the shortest path computations are performed in software, which is inefficient for real-time app...

Several real problems in telecommunication, transportation, and distribution industries can be well analyzed by network flow models. In revenue management, pricing plays a primary role which increases the profit generated from a limited supply of assets. Pricing decision directly affects the amount of service or product demand. Hence, in traditional maximum flow problem, we assume that the dema...

Based on a theoretical framework that derives information flows associated to economic and social transactions, intersectoral, point-to-point telecommunication flow functions are specified and estimated, using a very large data base on intra-LATA toll calls and a simultaneous equation estimation procedure that accounts for the endogeneity of reverse call flows. The effects of prices, distances,...

Communication technologies supply the blood for smart city applications. In view of the ever increasing wireless traffic generated in smart cities and our already congested radio access networks (RANs), we have recently designed a data transportation network, the vehicular cognitive capability harvesting network (V-CCHN), which exploits the harvested spectrum opportunity and the mobility opport...