sures experienced by a pipeline can be either beneficial or detrimental from an operational performance perspective, depending on the amount, the two phase regime of the mixture (whether homogeneous or slug) and the nature and cause of the transient. It is generally held that when free (undissolved) air, or gas, is present in a hydraulic system, it can greatly reduce the surge pressure levels b...

The electro-hydraulic servo system (EHSS) has been demonstrated to be a promising choice for diverse applications due to its high-power density, ease of implementation, good dynamic performance and durability, despite the rapid development of electric power transmission. Owing to these characteristic, the EHSS has been widely used in the aircraft control, machine tools and manufacturing, excava...

In this paper, we demonstrate that the construction proposed by Lan Nguyen at CT-RSA’05 does lead to a cryptographic accumulator which is not collision resistant.

Nowadays, hydropower plays an essential role in the energy market. Due to their fast response and regulation capacity, hydraulic turbines operate at off-design conditions with a high number of starts and stops. In this situation, dynamic loads and stresses over the structure are high, registering some failures over time, especially in the runner. Therefore, it is important to know the dynamic r...