To qualify the condition of a multi standard and a multi band transceiver, a quadrature voltage controlled oscillator (VCO), which has a wide and proper tuning range, is necessary, while providing high phase noise performance and consuming low current. In this paper, a dual band quadrature VCO in 0.18 μm CMOS process is proposed. To attain the dual band operation, a reconfigureurable LC tank is...

Although facility scale thermal energy storage of sensible heat in the range of 200-550°C has achieved a high maturity, state-ofthe-art approaches are still not very cost effective. An innovative storage concept is thus proposed that avoids the two major costdriving factors of the concrete storage and 2-tank molten salt systems. First, the storage volume is comprised of low-cost sensible storag...

Ground cylindrical steel fluid storage tanks are widely used in different industries. Regarding the significance of these structures, it is important to establish their proper performance in earthquakes by evaluating their seismic performance. The present study examines the seismic behavior of an unanchored fluid storage system via ABAQUS after validation using an experimental model. Next, the ...

The energy saving is becoming an important topic also in the food industry. For this reason, it is important to use multi-energy systems to produce hot water for processes and space heating. The application considered in this paper, which concerns a chocolate factory, focuses on the hot water production through a multi-source storage tank. The water inside the tank is heated by four solar panel...

Conventional studies in communication networks mostly focus on securely and reliably transmitting data from a source node (or multiple source nodes) to multiple destinations. A more general problem appears when the destination nodes are interested in obtaining functions of the data available in distributed source nodes. For obtaining a function, transmitting all the data to a destination node a...

An LPG filling station incident in Korea has been studied. The direct cause of the incident was concluded to be faulty joining of the couplings of the hoses during the butane unloading process from a tank lorry into an underground storage tank. The faulty connection of a hose to the tank lorry resulted in a massive leak of gas followed by catastrophic explosions. The leaking source was verified...