ELECT An active add-on option for 208 VLL/60 Hz passive three-phase rectifiers is presented. The active optional circuit is implemented as ‘centretapped’ full-bridge stage and guarantees low-harmonic input currents and unity power factor. The active unit is able to operate for a wide frequency range and therefore applicable for high(e.g. >100 kW) and low-power applications. Some basic considera...

the option-pricing problem is always an important part in modern finance. assuming that the stock diffusion is a constant, some literature has introduced many stock models and given corresponding option pricing formulas within the framework of the uncertainty theory. in this paper, we propose a new stock model with uncertain stock diffusion for uncertain markets. some option pricing formulas on...

We investigate the interaction between labour and credit market imperfections for the determination of equilibrium unemployment within the framework of the "right-tomanage" approach. Our analysis highlights the critical role of labour mobility for the evaluation of the employment implications of intensified credit market competition. Without labour mobility increased bargaining power of banks w...

Renewable energy subsidies in the form of feed-in tariffs implicitly give investors the possibility to shut down their renewable power plants temporarily or permanently. This real option is especially valuable for electricity from biomass, an important pillar of European renewable energy goals. The shut-down option is similar to a put on agricultural commodity prices, while the costs and benefi...

Flue gas conditioning (FGC) systems offer an effective option for control of Particulate Matter (PM) emissions and enhances the performance of the Electrostatic Precipitators (EPs) when using coal of different properties. The increasing environmental awareness and the mandate of the Environmental Protection Agencies (EPA) in various countries to thermal power stations using coal-fired boilers f...

Electricity prices are notoriously hard to model due to their exotic behav-iors. The extraordinarily high volatilities, strong mean reversion, pronouncedcyclical price patterns, and occasional occurrence of price spikes may demandvery complicated models.From the empirical analysis with the Dutch and German electricity mar-ket data, we …nd that the two-state regime switching ...

Purpose – Many Web 2.0 services (including Library 2.0 catalogs) make use of folksonomies. The purpose of this paper is to cut off all tags in the long tail of a document-specific tag distribution. The remaining tags at the beginning of a tag distribution are considered power tags and form a new, additional search option in information retrieval systems. Design/methodology/approach – In a theor...

A battery storage system provides an independent source of power. This is essential for off-grid living where battery storage holds all energy produced by your solar, wind or hydro system. Note also that grid-connected solar power doesn't automatically provide you with an independent power supply if the grid goes down then you lose supply completely. However, it is possible to add a battery sto...