Cryptographic accumulators are well-known to be useful in many situations. However, the most efficient accumulator (the RSA accumulator) it is not secure against a certificate authority who has herself selected the RSA modulus n. We generalize previous work and define the root accumulator in modules over Euclidean rings. We prove that the root accumulator is secure under two different pairs of ...

The purpose of the work is organization six-cylinder diesel engines (with a power 116 and 156 kW) working process with exhaust gas recirculation. following systems components were used in experimental configuration engine: Common Rail BOSСH accumulator fuel injection system an pressure 140 MPa equipped electro-hydraulic injectors 7-hole nozzle 500 mm3 hydraulic flow; direct MOTORPAL pump maximu...

Energy plants based on renewable energy sources can be combined according to the type of source (hydro, solar, wind with or without hydro storage). Currently, not enough attention has been paid assessing economic efficiency power incorporating a hydraulic accumulator. When designing plants, it becomes necessary choose composition such and evaluate their efficiency. The purpose this study is jus...

In this short note, we present an extension of Nguyen’s bilinear-map based accumulator scheme [8] to support non-membership witnesses and corresponding non-membership proofs, i.e., cryptographic proofs that an element has not been accumulated to a given set. This complements the non-membership proofs developed by Li et al. [7] for the RSA accumulator [2, 3, 5], making the functionality of the b...

Hydraulic integrated interconnected regenerative suspension (HIIRS) is a novel system that can simultaneously harvest the vibration energy in and enhance vehicle dynamics. The parameter sensitivity of HIIRS analyzed significant parameters are optimized this paper. Specifically, half-vehicle model with established. Based on model, hydraulic three objectives, ride comfort, road holding, average h...

Jay Kim Structural Dynamics Research Laboratory University of Cincinnati Cincinnati, OH 45221-0072 Since the suction accumulator is one of components with large surface area in rolling piston type rotary compressors, its contribution to the total radiated noise may be substantial. In this study, possible noise sources of the accumulator are discussed. The noise radiated from accumulators are pr...

To improve the efficiency and stability of an eccentric rotating wave energy converter (ERWEC), adaptive hydraulic power-take-off (PTO) system with accumulator is designed developed. Experiments are performed to analyze effects trigger pressure, delay time, open state duration on average output power fluctuation index. The results show that those three control parameters strongly coupled. exper...

This study evaluates the energy efficiency of pressure shock damping in a hydraulic lifting and leveling (HLL) module mobile robotic bricklaying system (RBS). The HLL includes servohydraulic actuator (SHA) damper (HSD). proposed adjustable HSD consists accumulator circuit (HAC) proportional valve. frequency characteristics impedance indices were used to evaluate effectiveness damping. dynamic r...