Resilience and startup delay are the most important performance metrics to evaluate the P2P streaming systems. To simultaneously improve the two metrics, we propose several mechanisms at different system evolution stages. At the first stage, media server encodes the stream into multiple substreams of the same length. Redundancy is introduced by using Reed-Solomon (RS) coding before distributing...

up flow anaerobic sludge blanket (uasb) reactors have been increasingly used for industrial wastewater treatment. because of existing problems in startup step of these reactors, in this research the startup of a uasb in pilot scale and room temperature condition was studied. the total height of uasb reactor was 270 cm and effective height was 240 cm. diameter of the reactor in lower part was 20...

The objective of this study is to determine the right cycle management policy to service periodic soft real-time disk retrieval. Cycle based disk scheduling provides an effective way of exploiting the disk bandwidth and meeting the soft real-time requirements of individual I/O requests. It is widely used in real-time retrieval of multimedia data blocks. Interestingly, the issue of cycle managem...

Asynchronous pipelining is a form of parallelism which may be used in distributed memory systems. An asynchronous pipeline schedule is a generalization of a noniterative DAG schedule. Accurate estimation of the execution time of a pipeline schedule is needed to determine if pipelining is appropriate for a loop, and to compare alternative schedules. Pipeline execution of n iterations of a loop r...

We find that VC-backed firms receiving their initial investment in hot markets are less likely to IPO, but conditional on going public are valued higher on the day of their IPO, have more patents and have more citations to their patents. Our results suggest that VCs invest in riskier and more innovative startups in hot markets (rather than just worse firms). This is true even for the most exper...

Overall efficiency of high-performance computingclusters not only relies on the computing power of theindividual nodes, but also on the performance that theunderlying network can provide to the computationalapplication. Although modern high-performancenetworks, especially System Area Networks (SANs), havehigh unicast performance, they do not support multicastcommunic...