We propose a cost effective solution called Caching Agent where caching servers are placed inside the network to create a virtual backbone for video streaming services. Unlike conventional proxies, caching agents act as virtual routers and cleverly cache data passing by. When a client request encounters a cache miss at a local agent, this request may be satisfied by another nearby agent without...

Performance tuning often involves consideration of adding another server to the system. Owing to changes in technology, the additional server may be of a service rate different from that of the existing servers. Moreover, with heterogeneous servers, consideration must be given to what service discipline should be employed. An analysis is provided of the effect on waiting time using two service ...

Multiple sequence alignments are essential in homology inference, structure modeling, functional prediction and phylogenetic analysis. We developed a web server that constructs multiple protein sequence alignments using PROMALS, a progressive method that improves alignment quality by using additional homologs from PSI-BLAST searches and secondary structure predictions from PSIPRED. PROMALS show...

we consider an m/g/1 queue with regular and optional phase vacation and withstate dependent arrival rate. the vacation policy is after completion of service if there are no customers in the system, the server takes vacation consisting of k -phases, each phase is generally distributed. here the first phase is compulsory where as the other phases are optional. for this model the supplementary var...

The IBM S/390 Parallel Transaction Server (PTS) has introduced into the mainframe environment many aspects of distributed client/server processing. This paper begins the investigation of one of those aspects; the impact of in-storage buffer misses as additional processors are added to the complex. Additional processors are seen as a solution to both the capacity and availability problems of lar...

SUMMARY mimicMe is a web server for prediction and analysis of host-like proteins (mimics) encoded by microbial pathogens. Users select a host species and any set of pathogen and control proteomes (bacterial, fungal, protozoan or viral) and mimicMe reports host-like proteins that are unique to or enriched among pathogens. Additional server features include visualization of structural similariti...

The UltraSPARC T1 (Niagara) from Sun Microsystems is a new multi-threaded processor that combines Chip Multiprocessing (CMP) and Simultaneous Multi-threading (SMT) with an efficient instruction pipeline so as to enable Chip Multithreading (CMT). Its design is based on the decision not to focus the performance of single or dual threads, but rather to optimize for multithreaded performance in a c...