With the continuous development and iteration of telecommunication technology, the users' requirements of the quality and service have increased dogmatically. In order to meet the diverse and personalized consumer demands, virtual network operators came into being. In 2013, China officially...

As the usage of mobile data is significantly increasing, the demand for free public Wi-Fi also continues to grow. The ministry of science & ICT (MSIT) and some municipalities in Korea have been constructing free Wi-Fi networks on mass transportation for the benefit of users. In this study, we...

We consider a market with two symmetric firms and two asymmetric consumer groups. Firms send advertising messages which inform consumers about the existence and the price of their product (Butters, 1977). Targeting a specific consumer is imperfect as with some probability the consumer is not...

The internet giants - Facebook, Amazon, Netflix and Google, among others - have transformed society with both positive and negative effects. The negative effects have been stark. There have been huge disruptions caused by e-commerce. More recently, subtler, but even more serious negative effects...

Der Einzelhandel in der Bandbreite seiner heutigen Erscheinungsformen hat auf der Angebotsseite sowie auf der Nachfrageseite in den zurückliegenden Jahrzehnten einen gravierenden Wandel vollzogen. Dabei ist eine generalisierende Beurteilung sehr schwierig, liegen doch zwischen SB-Warenhäusern,...

The empirical analysis of firm growth is a classical field in industrial economics. Insights into the determinants of firm growth are particularly interesting for mature markets. A typical example of a mature market is the lodging industry in high-income countries, characterised by a high degree...