This paper analyses the performance of a lowvoltage microgrid, based on microturbines, and presents new control algorithms to improve the efficiency and reliability of microgrids. Due to the importance of islanding and focusing on the efficiency and the harness of the heat of the exhaust gasses in islanded operation mode, a new control algorithm has been developed. Additionally, a new control s...

The increasing penetration of dispersed generation (DG) brings challenges to conventional protection approaches of distribution system, mainly due to bi-directional power flow and variable fault current contribution from different generation technology-based DG units. Moreover, the trend of allowing islanded operation of distribution systems necessitates the adoption of adaptive protection meth...

Frequency stability of microgrids under islanded operation attracts particular attention recently. A new cooperative frequency control strategy based on centralized multi-agent system (CMAS) is proposed in this study. Based on this strategy, agents sent data and furthermore each component has its own to center operating decisions (MGCC).After deciding on the information, they are returned. Freq...

konstant ist, woraus zu schließen ist. daß das Einzelteilchenmodell zur Beschreibung der hier untersuchten Entladungen nicht geeignet ist. Die Voraussetzungen für die Anwendbarkeit der Stoßwellentheorie von GUDERLY 11 sind bei den betrachteten Entladungen erfüllt: da die LoRENTz-Kraft gegenüber dem immer stärker werdenden Druckgradienten hinter der Stoßfront immer weniger ins Gewicht fällt, je ...

Solutions of the Bethe ansatz equations associated to the XXX model of a simple Lie algebra g come in families called the populations. We prove that a population is isomorphic to the flag variety of the Langlands dual Lie algebra g . The proof is based on the correspondence between the solutions of the Bethe ansatz equations and special difference operators which we call the discrete Miura oper...

In this paper, we explore the efficiency of different groups hospitals in Queensland, Australia, focusing on teaching and non-teaching hospitals, by adapting most recent developments statistical analysis aggregate efficiency. We focus two approaches: bootstrap approach proposed Simar Zelenyuk (J Appl Econ 22(7):1367–1394, 2007) central limit theorems recently developed (Oper Res 66(1):137–149, ...

To evaluate the construct validity (convergent and divergent) of SPSOPER test, 88 healthy participants and 285 psychosomatic patients completed the tests. Pearson correlation coefficients between SPS scales and subscales and Toronto Alexithymia Scale Revised (TAS-r) were calculated. Most SPS subscales and OPER are significantly correlated to TAS-r. The correlations are higher for the patient gr...

This paper tries to incorporate both Huang s model [Y.F. Huang, Optimal retailer s ordering policies in the EOQ model under trade credit financing, J. Oper. Res. Soc. 54 (2003) 1011–1015] and Teng s model [J.T. Teng, On the economic order quantity under conditions of permissible delay in payments, J. Oper. Res. Soc. 53 (2002) 915–918] by considering the retailer s storage space limited to refle...

Abstract We present in this note a correction to Theorem 17 Ran and Wojtylak (Compl. Anal. Oper. Theory 15:44, 2021) sharpen the estimates for eigenvalues of parametric rank one perturbations given that theorem.