in this study, a new servo control system is presented for the overhead crane based on discrete-time state feedback approach. it provides both robust tracking and load swing suppression. inspired from independent joint and computed torque control in robot manipulator field, a new model is derived in which the crane actuators are considered as the main plant. the crane nonlinearities are then tr...

The article deals with the issues of interconnection network costs and power quality, in particular voltage deviations. graphs distribution deviations for electrical receivers are given two calculated load modes - highest (100%) lowest (25%), corresponding to choice wires 10 0.38 kV overhead lines economic loads stabilization on buses 35/10 RTP at level + 5%.

The importance of power management has led to most new servers providing power usage measurement in hardware and alternate solutions exist for older servers using circuit and outlet level measurements. However, the power measurement and management capability is severely handicapped when the servers are virtualized because virtual machine (VM) power cannot be measured purely in hardware. We pres...

Web application developers partition and replicate their data amongst a set of SQL databases to achieve higher throughput. Given multiple copies of tables partioned different ways, developers must manually select different replicas in their application code. This work presents Dixie, a query planner and executor which automatically executes queries over replicas of partitioned data stored in a ...

Very large polygonal models are frequently used in scientific computing, mechanical engineering, or virtual medicine. An effective technique to handle these large models is occlusion culling. Like most large model techniques, occlusion culling trades overhead costs with the rendering costs of the possibly occluded geometry. In this paper, we present occlusion culling techniques for OpenSG. Thes...

Partial reconfiguration allows for mapping and executing several tasks on an FPGA during run time. One of the challenging problems in multitasking systems is high amount of communication costs. In this paper, we present two clustering methodologies that temporally cluster real-time tasks for a partially reconfigurable hardware and reduce communication overhead. The first algorithm aims at effic...

The common perception, particularly among employers of labour is that enforcement or implementation of enhanced labour standards would negatively impact on overhead costs thereby impeding the organisation’s competitive advantage through price mechanisms at both national and global marketplace. The purpose of this paper is to provide an analysis and draw inherent relationships between enforcemen...

Scaling the size of parallel systems while maintaining the system performance is an important problem. A default scaling approach by using larger networks to interconnect more processors works only up to a limited extent and the derived conngurations using this approach are not cost-eeective. Recent advents in VLSI and packaging technologies now ooer multiple processors on a single multi-chip m...

Scaling the size of parallel systems while maintaining the system performance is an important problem. A default scaling approach by using larger networks to interconnect more processors works only up to a limited extent and the derived conngurations using this approach are not cost-eeective. Recent advents in VLSI and packaging technologies now ooer multiple processors on a single multi-chip m...