Friday, March 12, 2010

basic network equipments


Ad Hoc self-organizing networks, whose shortened form is Ad Hoc, is a temporary, multi-hop and self-governing distributed control network without basic network equipments and a center node, which is composed of mobile nodes with wireless network interface. Network topology change optionally and nodes in Ad Hoc also can move optionally.None center nodes and low computing ability of nodes make traditional mechanism of encryption and authentication not implement. The changes of topology, node number, trust relations and data engendered and transmitted in network, let network safe scheme, which is configured statically, including database and file system, not be applicable again. Traditional firewall can’t dispose because of blurry network boundary. Therefore, Ad Hoc security has become a hot research point.Network Intrusion detection, including misapplication detection and anomaly detection, can recognize the attacks which attempt to happen, are happening or have happened, and it is a kind of active network security protection measure. The most existing intrusion detection technologies have the deficiency of high false positive rate and negative rate, and poor real-time performance. Especially, high detection accuracy is usually based on abundant or self-contained training data.In this dissertation, Ad Hoc network key technologies and security requirements are firstly expounded. Then, PSO algorithm and QPSO algorithm are systematically introduced.Ch.4 introduced the application of K-Means clustering algorithm and QPSO algorithm in Ad Hoc anomaly detection.

Wednesday, March 3, 2010

The company

The company is a leading mobile application vender in China. The applications can enable handset users to access the northface outlet site just by taking a picture or scanning a 2D-barcod in print/OOH ads.The company also provides mobile advertising, mobile communication and enterprise mobilization strategy consulting service and total solution for the brands and north face outlet with China Mobile, the biggest mobile carrier in China.Main Responsibilities:* Be responsible for the P/L, Quality ,Cost and Delivery of the projects in China market .* Managed sale and marketing ,product, technical support, operation teams in China , achieve the sales target of the region.* Built up product / project management department, oversee the project management,technical support and content maintenance teams in Beijing and Shanghai Office.* Collaborated closely with local SPs in promoting the facial matching based personal cheap northface jackets.Achievements* Achieved the annual revenue target at $1.5M in 2008,and $2.5M in 2009.