a simple, rapid and sensitive hplc method for the determination of theophylline (t) in human serum has been developed. an isocratic system consisting of a /-l bondapak c18 column, mobile phase of methanol, phosphate buffer (22:78, ph=4.5), and a flow rate of 1.4 ml/min was used. the eluent was detected by uv at 275 nm at room temperature. 8-chlorotheophylline (8-ct) was used as an internal stan...

Internet traffic and the volume of Internet multimedia applications are increasing, hence forcing us to investigate new concepts and paradigms in the high-performance Quality of Service(QoS) routing. Especially, the recent development of Internet Integrated (IntServ) and Differentiated Services (DiffServ) aims to satisfy the large heterogeneity of applications going through Internet and to sati...

In this chapter, we consider the role of commodity off-the-shelf software technologies and components in the construction of computational grids. We take the position that computational grids can and should build on emerging commodity network computing technologies, such as the CORBA, COM, JavaBeans, and less sophisticated Web and networked approaches. These technologies are being used to const...

Storage is becoming key in HPC systems, and especially when Exascale systems enter the game. The amount of data needed to solve the coming HPC challenges will not fit in memory, thus storage systems need to keep the pace of computing improvements; otherwise Exascale machines will waste energy waiting for the storage system to deliver the needed data. This research line investigates several path...

Comparisons of high-performance computers based on their peak floating point performance are common but seldom useful when comparing performance on real workloads. Factors that influence sustained performance extend beyond a system’s floating-point units, and real applications exercise machines in complex and diverse ways. Even when it is possible to compare systems based on their performance, ...

This dissertation discusses how to write computer programs that attain both high performance and portability, despite the fact that current computer systems have different degrees of parallelism, deep memory hierarchies, and diverse processor architectures. To cope with parallelism portably in high-performance programs, we present the Cilk multithreaded programming system. In the Cilk-5 system,...

L IGHTING ACCOUNTS FOR ABOUT 15 PERCENT OF THE WORLD’S TOTAL ELECTRICITY CONSUMPTION, therefore a reduction of energy consumed for lighting will give a significant contribution to better utilization of the natural resources and a reduction of CO2 emissions. Recently, Light Emitting Diodes (LED) have been introduced in street lighting, building lighting, backlighting and automobiles lighting, ow...