This chapter provides a roadmap to the burgeoning literature on two-sided markets with a speci…c focus on BtoB marketplaces. Online intermediation involves two-sided network e¤ects between buyers and sellers, and the implications for optimal BtoB platforms’tari¤s are discussed. The chapter discusses …rst the monopoly case, drawing attention to the distinction between upfront registration fees a...

The Stream Control Transmission Protocol (SCTP) is a new transport protocol that is featured multi-streaming and multi-homing. Until now, the two approaches have been considered for IP mobility management: Mobile IP in the network layer and SIP in the application layer scheme. In this paper, we discuss the use of SCTP for IP mobility support in the transport layer. We provide a framework of the...

Multivalent interactions occur frequently in nature, where they mediate high-affinity interactions between cells, proteins, or molecules. Here, we report on a method to generate multivalent aptamers (Multi-Aptamers) that target L-selectin function using rolling circle amplification (RCA). We find that the L-selectin Multi-Aptamers have increased affinity compared to the monovalent aptamer, are ...

Internet users seek solutions for mobility, multihoming, support for localised address management (i.e. via NATs), and end-to-end security. Existing mobility approaches are not well integrated into the rest of the Internet architecture, instead primarily being separate extensions that at present are not widely deployed. Because the current approaches to these issues were developed separately, s...

Trust establishment seems to be the most difficult problem in mobility and multi-homing management. Many protocol proposals assume the presence of some security infrastructure (e.g. a Public-Key Infrastructure). However, building such a global infrastructure has not taken place, maybe because it would be too expensive and difficult to deploy. In this paper, we introduce a security context estab...

The current trend in mobile networking is towards mobile hosts that have multiple network interfaces, e.g., WLAN and GPRS. However, when the current Internet architecture was originally designed, neither mobility nor multihoming were considered. In the current architecture an IP address represents both a host’s identity and the host’s topological location. This overloading has led to several se...

Many recent studies have shown that end-to-end path selection can increase availability using mechanisms based on overlay networks or end-host and edge multi-homing. In this paper, we address several unanswered questions about the path diversity that these mechanisms take advantage of: regardless of the path selection techniques used, where in the network is it necessary to provide path choice ...

This study examines how the “openness” of SNS platforms and the number of SNS platforms users adopt moderates online homophily. The analyses—based on panel data on recorded SNS usage behaviors of 9,484 individual users— reveal that age homophily is pervasive in online social lives. However, the patterns of homophily differ significantly across diverse demographic groups, platform type, and user...

Traffic engineering (TE) has been widely investigated in recent years. Though, the scope of these works were predominantly limited to intra-domain TE and single administrative domains. Not even the long term TE with monitoring and analysis of traffic exchange points has been adequately solved, not to mention the short term, real-time performance related inter-domain TE tasks. This is in spite o...