Jian-Song WU1,∗, Ying-Kai XIAO, Yu-Ping LIU, Wan-Bang XU, Mei-Fang LIANG, Jian CHENG, Jian-Ping WAN, Ling-Zhu CHEN School of Chemistry Science and Technology, Zhanjiang Normal College, 524048, Zhanjiang-CHINA e-mail: [email protected] Key Laboratory of Salt Lake Resources and Chemistry, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, 810008, Xining-CHINA Guangdong Institute fo...

Cheung Sha Wan Dermatology Clinic, 3/F West Kowloon Health Centre, 303 Cheung Sha Wan Road, Kowloon, Hong Kong An 84-year-old Chinese male patient presented with multifocal bluish red papules on the right foot. Skin biopsy showed a nodular vasoformative tumour composing of spindle cells with slit-like spaces. Human herpesvirus (HHV-8) immunostaining was positive. Based on the clinical features,...

While corporate networks are predominantly TCP/IP, the underlying technology used to interconnect an organization’s network varies widely. Technologies include private TDM lines, frame relay, ATM and IP. Each technology requires its own network management technique. The problem of correlating low level WAN measures to application performance is difficult, especially if multiple WAN service prov...

Today, more and enterprises are embarking on a digital transformation where most of their applications hosted in the Cloud. As result, reliable Wide Area Network (WAN) has become primary need to interconnect distributed branch offices data centers that accommodate those applications. Software-Defined (SD-WAN) represents promising technology solution for next-generation enterprise networks, bein...

A simulation model is presented to analyze and evaluate the performance of VoIP based integrated wireless LAN/WAN with taking into account various voice encoding schemes. The network model was simulated using OPNET Modeler software. Different parameters that indicate the QoS like MOS, jitter, end to end delay, traffic send and traffic received are calculated and analyzed in Wireless LAN/WAN sce...

Recent proposals have shown that database replication providing 1copy-serializability can have excellent performance in LAN environments by using powerful multicast primitives. In this paper, we evaluate whether a similar approach is feasible in WAN environments. We identify the most crucial bottlenecks of the existing protocols, and propose optimizations that alleviate the identified problems....

The 1st Annual Awards for Action on HIV/AIDS and Human Rights were awarded to the Vancouver Area Network of Drug Users and to Dr. Wan Yanhai, a Chinese physician and activist. The international attention and media coverage of the awards was heightened by the fact that the Chinese government had detained Dr. Wan for disclosing information about unsanitary blood collection practices in Henan prov...

The WAN database application of SOAP protocol using XML is considered. Two methods of hierarchical system: two tiers and three tiers models are presented and the communication between client and server depends on XML standard and SOAP protocol are explained.

A secure reliable multicast protocol enables a process to send a message to a group of recipients such that all correct destinations receive the same message, despite the malicious efforts of fewer than a third of the total number of processes, including the sender. This has been shown to be a useful tool in building secure distributed services, albeit with a cost that typically grows linearly ...