We define the new notion of a multilinear pseudorandom function (PRF), and give a construction with a proof of security assuming the hardness of the decisional Diffie-Hellman problem. A direct application of our construction yields (non-multilinear) PRFs with aggregate security from the same assumption, resolving an open question in [CGV15]. Additionally, multilinear PRFs give a new way of view...

We study the adaptive security of constrained PRFs in the standard model. We initiate our exploration with puncturable PRFs. A puncturable PRF family is a special class of constrained PRFs, where the constrained key is associated with an element x′ in the input domain. The key allows evaluation at all points x 6= x′. We show how to build puncturable PRFs with adaptive security proofs in the sta...

This paper presents modeling, simulation and control of matrix converter (MC) for variable speed wind turbine (VSWT) system including permanent magnet synchronous generator (PMSG). At a given wind velocity, the power available from a wind turbine is a function of its shaft speed. In order to track maximum power, the MC adjusts the PMSG shaft speed.The proposed control system allowing independen...

We put forward a new notion of pseudorandom functions (PRFs) we call constrained PRFs. In a standard PRF there is a master key k that enables one to evaluate the function at all points in the domain of the function. In a constrained PRF it is possible to derive constrained keys ks from the master key k. A constrained key ks enables the evaluation of the PRF at a certain subset S of the domain a...

in the restructured environment of electricity market, firstly the generating companies and the customers are looking for maximizing their profit and secondly independent system operator is looking for the stability of the power network and maximizing social welfare. in this paper, a one way auction in the electricity market for the generator companies is considered in both perfect and imperfec...

A novel design method of chaotic signal generator based on digital signal processing for three-dimension system is presented in this paper. We illustrate the structure and function of each module in this system. By comparing the experimental results with the simulation results, the feasibility of this method is verified. The proposed chaotic signal generator can offer a new alternative in rando...

This paper first describes the implementation of a protocolindependent self-similar traffic generator in the OPNET modeler. With the support of this traffic generator, we investigate the traffic shaping function at the edge router in optical packet-switched networks. We propose an optical packet assembly mechanism and discuss its impacts on the traffic characteristics. Our simulation results in...

Various efforts ([?, ?, ?]) have been made in recent years to derandomize probabilistic algorithms using the complexity theoretic assumption that there exists a problem in E = dtime(2), that requires circuits of size s(n), (for some function s). These results are based on the NW-generator [?]. For the strong lower bound s(n) = 2 , [?], and later [?] get the optimal derandomization, P = BPP . Ho...

Background: Musculoskeletal disorders (MSDs) are among the most prevalent pains which could be ignited via material handling. Backpack wearers are among those who may carry heavy loads. Since MSDs mainly originate in school-aged children, students (as the largest group of backpack wearers) are considered more important. The purpose of this study is to design a backpack based on minimization of ...