Wireless sensors are increasingly adopted in manufacturing and vehicular systems for monitoring critical components under continuous operation. Many such components move rapidly and frequently in metallic containments with challenging radio propagation characteristics. For wireless sensors mounted on rotating structures, previous experimental studies observed an eminent increase in packet trans...

New technology now permits ground-based lidar to operate The basis of the MPL design is the use of lasers with high full time and profile all significant aerosol and cloud structure pulse repetition frequencies (PRF) and low pulse energies. of the atmosphere up to the limit of signal attenuation. Such When highly efficient optics, filters, and detectors are used, it systems are in operation at ...

Using panel regression for the period 1970-2000 the paper analyzes whether globalization has influenced the OECD countries’ social and overall spending as well as their implicit tax rates on labor, consumption and capital. Accounting for potential endogeneity of the regressors, the results show that globalization (measured by an index covering 23 variables) did not decrease the leeway for indep...

This paper describes the high-power testing of the first RF cavity for the PEP-II Bfactory. The cavity is designed for continuous operation at 476 MHz with up to 150 kW wall dissipation and heavy beam loading. Three rectangular waveguides and broad-band loads are used to damp the cavity higher-order modes. The test configuration, RF conditioning history and high-power performance are described ...

Scarcity of fossil fuels and a rapid escalation in the fuel prices around the world recently has lead the search for alternative energy sources. Out of the available energy sources, wind is being considered as the prime next generation energy source. The fundamental principle of wind turbines is to convert the wind energy into first mechanical and then into electrical form. The relatively simpl...

This paper discusses the problem of fault diagnosis under multiple sequential faults occurrence. In industrial applications this type of fault is the most common since the continuous operation of systems/processes is required. The fault diagnosis algorithms should cope with such type of multiple faults, but degradation in their fault isolation capabilities is introduced until the point that the...

The energy performance of radiant slab cooling relative to conventional air systems to be clarified for climates from cold and dry to very hot and humid. EnergyPlus simulations were used to compare the energy performance of 1) radiant slab cooling combined with a dedicated outdoor air system and 2) a variable air volume system. Simulation results show that the radiant slab system provided 10% t...

Power system is a highly interconnected nonlinear system that needs optimal and accurate control for continuous operation. Large power transfer through long transmission line between different electrical areas, stressed system and adverse interaction between local controllers, may give rise to slow frequency inter-area oscillations. The inter-area modes may not be visible from local measurement...

Engineering structures such as wind turbines require continuous monitoring to ensure structural safety, to reduce the overall maintenance and repair costs and, ultimately, to achieve extended lifetimes and a greater economic viability. For that purpose, an automated SHM system for wind turbines has been developed and installed on a 500 kW wind turbine in Germany. During its operation, temporary...

Controllers for processes which frequently return to a number of modes of operation should be adapted through mode recognition. Al~tmd-Many processes operate only around a limited number of operation points. In order to have adequate control around each operation point, an adaptive controller could be used. When the operation point changes often, a large number of parameters would have to be ad...