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In the present study, we tested whether children’s play with feminine toys is related to social abilities in which girls typically excel. We measured gender-typed toy play, empathy, and comforting skill in 80 Grade 1 children (about 6 years-old) in Hong Kong, China. Toy play was assessed with a standard observational paradigm; empathy, with the Empathy Quotient-Child Questionnaire; and comforting...
Bone marrow mesenchymal stem cells (BMSCs) transplantation can ameliorate cognitive impairment in chronic ischemic brain injury, but the underlying mechanism is poorly understood. It is considered that the hippocampus holds the capabilities of memory consolidation and spatial navigation, and the gamma amino butyric acid (GABA)ergic system plays an important role in the control of learning and memory...
The Border Gateway Protocol (BGP) is one of the key components of today's Internet infrastructure. Many ISPs rely on BGP for convergence of inter-domain routes upon BGP link failures. However, the convergence of BGP requires several seconds of downtime, which may cause critical performance degradation of applications. In this paper, we propose the use of an intra-domain routing protocol to provide...
The border gateway protocol (BGP) routing system is one of the key components of today's Internet infrastructure. However, the fundamentals of the BGP routing system have remained unchanged since its standardization. The only fault tolerant mechanism currently available is multihoming, which is about increasing the number of peering autonomous systems (ASes). The reliability of the BGP infrastructure...
If a problem with IP communication occurs, IP network operators refer to the routing tables of the affected routers to check the routes to the destinations. There are a number of methods currently used for referring to routing tables. However, operators cannot refer to past routing tables using existing methods. The past routing tables are useful for IP network operation. For example, operators can...
As the Internet has become a communication infrastructure, inter-domain routing instabilities have become prone to serious problems. Some studies have proposed methods that infer instabilities and their locations by clustering BGP update messages collected at multiple observation points and are based on post-processing using public messages. However, to realize real-time processing, which is vital...
It is important to monitor routing protocols for stable operation of IP networks. In this paper, we focus on Open Shortest Path First (OSPF), a widely deployed intra-domain routing protocol. Routers running OSPF advertise their link states on Link State Advertisements (LSAs) to the network so the location of OSPF failures on the IP network can be detected by monitoring LSAs. However, in order to identify...
Establishing secure channels between a pair of hosts is an attractive way when the direct exchange of important data is required. IPsec provides various security services for traffic at the IP layer so we can use it to establish secure channels between a pair of hosts. However, IPsec is difficult to use because there are many parameters to set up for secure channels, and the configuration is complicated,...
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