The formation and evolution of digital service platforms is changing the balance of powers in the ICT industry. In particular, telecommunications operators feel the need to gain more control over the creation and provision of new services and to revise their roles in different service...

Could mobile phones become mass media, like television, radio, newspaper or Internet, which provide us information and entertainment? Although the penetration rates of mobile phones are very high in most countries, many users are not willing to spend money on the consumption of mobile online...

As the development of the e-book devices, such as Kindle, iPad, smart phones and tablet notebook, and the appearance of aggregators, such as Amazon, Barnes & Nobel, and iBook store, there are substainable business models for the publishing industry to begin making profits. However, the e-book...

We contribute to the role of telecommunications infrastructure on economic growth in three ways. We separately examine fixed-line and mobile telephone subscription levels. We compare results across periods and regions that differ by the level of development. In addition, we develop a method...

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...