Science and technology have been the driving force of development for knowledge-based economies. In particular, as competition in mobile communications technology innovation among countries become more intense, there are growing needs for enhanced judgment, evaluation, and prediction of...

This paper presents a Japanese perspective on measures against online sexual informaiton. A research queistion is set on what kinds of measures are required in order to protect youth from the harmful influence of online sexual informaiton. The paper firstly examines measures initiated by both...

Radio spectrum is a vital asset and resource for mobile network operators. With spectrum in the 800 and 900 MHz bands coverage can be provided with fewer base station sites compared to higher frequency bands like 2.1 and 2.6 GHz. With more spectrum, i.e. wider bandwidth, operators can offer...

Next generation access networks (NGAN) will support a renewed electronic communication market where main opportunities lie in the provision of ubiquitous broadband connectivity, applications and content. From their deployment it is - much - expected a wealth of innovations. Within this framework...

This paper studies the incentives of an unregulated monopolist to undertake the socially optimal investment in NGA networks when it takes into account the fact that the NGA deployment is a two-dimensional investment decision concerning both the quality (or equivalently, technology) and the...

Technological progress allows Internet Service Providers (ISPs) to carry out network manage-ment practices in a discriminatory fashion without being detected by their customers. This creates an opportunity that providers will exploit this information asymmetry in an opportunistic way by blocking...

Although it is generally acknowledged that international mobile roaming charges are too high, a successful formula for achieving reduction has so far proven elusive. Direct regulatory intervention to lower prices may be required. The success of such an approach depends upon the ability of...

Traditionally, neoclassical economics has been the guiding framework in the development of legislative and regulatory rules in the telecommunication markets. The regulatory perspective has long assumed a static environment. However, telecommunication markets have evolved into extremely dynamic,...