Datacenters are one of the important global energy consumers and carbon producers. However, their tight service level requirements prevent easy integration with highly variable renewable energy sources. Short-term green energy prediction can mitigate this variability. In this work, we first explore the existing short-term solar and wind energy prediction methods, and then leverage prediction to...

BACKGROUND Massive growth in human mobility has dramatically increased the risk and rate of pandemic spread. Macro-level descriptors of the topology of the World Airline Network (WAN) explains middle and late stage dynamics of pandemic spread mediated by this network, but necessarily regard early stage variation as stochastic. We propose that much of this early stage variation can be explained ...

This paper focuses on quality-of-service (QOS) provided during sessions in a high-speed wide area network and briefly survey research in this area. Four approaches towards providing Quality of Service guarantees are described and discussed, e.g. the tightly controlled approach, the approximate approach, the bounding approach, and the observation-based approach. A survey research aimed at resolv...

For rural ISPs and organizations, purchasing high-bandwidth, high-quality Internet connections is expensive, if such connections are even available. We propose MultiWAN, a system for loadbalancing at packet granularity across a number of low-bandwidth, low-quality wide area network links. Doing so allows us to create an aggregated connection with performance properties similar to that of a sing...

Copyright © 2015 The Korean Society of Radiology Professor Chu-Wan Kim, who passed away on April 9th 2015, was the giant roots and an eternal supporter of Korean radiology. He contributed greatly to the growth of Korean radiology since becoming involved with the field after completion of his medical degree in 1953. Like his pen name ‘JiSan’, meaning ‘grass and mountain’, he was as empowered and...

This paper explores ways to provide improved consistency for Internet applications that scale to millions of clients. We make four contributions. First, we identify how workloads affect the scalability of cache consistency algorithms. Second, we define two primitive mechanisms, split and join, for growing and shrinking consistency hierarchies, and we present a simple mechanism for implementing ...

Agreed message delivery is an important service in distributed systems, especially when dealing with fault-tolerant applications. This work studies factors influencing protocols that provide global order in Wide Area Networks. Performance evaluation in real network conditions was conducted in order to compare two recently published algorithms. It was found that loss rate and variations in messa...