The power take-off (PTO) stability is one of the most important concerns for wave energy converters (WECs). PTO unit converts mechanical produced by absorber (WA) into useful electrical energy. Due to drastic input variation real motions, generated from significantly fluctuates and potentially harmful electronic appliances. This paper proposes an improved hydraulic (HPTO) WECs. An HPTO comprise...

An accumulator is a succinct aggregate of a set of values where it is possible to issue short membership proofs for each accumulated value. A party in possession of such a membership proof can then demonstrate that the value is included in the set. In this paper, we preset the first lattice-based accumulator scheme that issues compact membership proofs. The security of our scheme is based on th...

Sediment erosion not only reduces efficiency and life of hydropower turbines but also causes problems in operation and maintenance. Several factors are responsible for this erosion in hydro turbine components. This paper presents the sediment erosion types in hydraulic turbines and their components based upon an extensive literature review and the field observation at Cahua hydropower plant, Pe...

Countering claims that recency effects observed at different time scales arise from a common forgetting process, Davelaar et al. (2005) presented a number of experimental dissociations between shortand long-term recency. They used these dissociations to argue that separate mechanisms underlie shortand long-term recency. Here we show that the temporal context model (TCM), which assumes that both...

This work introduces the most efficient universal accumulator known today. For the first time, we have an accumulator which does not depend on hidden order groups, does not require any exponentiations in the target group associated with the pairing function, and only requires two pairings to verify a proof-of-knowledge of a witness. We present implementations of our accumulator and another rece...

Rounded Arithmetic is the traditional way of presenting previous year accounts. The method of showing rounded sums of vectors in which the arithmetic still “adds up” and the errors in the display of the components are bounded by twice the maximum rounding error have been well known for at least 30 years in spite of there being little or nothing in the literature and no attempt to implement this...