Regarding the importance of ring spinning method among spinning systems, great potentials exist for research about on the improvement of the quality and properties of ring spun yarn. This study aims to improve yarn quality by changing the shape and dimensions of spinning triangle through forming a groove in the middle zone of the front darfting roller with a curvature of 5 to 7 mm. For the to...

In order to balance the interests of integrated energy operator (IEO) and users, a novel Stackelberg game-based optimization framework is proposed for optimal scheduling demand response (IDR)-enabled systems with uncertain renewable generations, where IEO acts as leader who pursues maximization his profits by setting prices, while users are follower adjusts consumption plans minimize their cost...

Emerging large battery energy storage systems (BESSs) are key enablers in the electrification of shipping sector. With huge government investments BESSs, there gaps between supported BESS initiatives and actual integration results on vessels. This study aims to close these gaps, allowing BESSs become preferred solution for ship owners without needing support. Firstly, this industry-driven revie...

Recently the Board of Governors of the Federal Reserve System solicited comment on a proposal to return to a lagged reserve requirement structure such as that in effect from September 1968 until February 1984. Under such a system the reserve computation period would end well before the beginning of the reserve maintenance period. Individual depository institutions would know their required rese...

The process through which Federal Reserve decisions about monetary policy are transmitted to the federal funds market has changed significantly in recent years. In 1994 the Federal Open Market Committee (FOMC) began to issue a public statement whenever it increased or decreased its target for the federal funds rate. This target is now the focus of activities at the Trading Desk at the Federal R...

since lean concept has appeared many works have been done on decreasing or even eliminating of wastes such as extra inventory. although these studies have not taken into account expected availability seriously. so in this paper, a multiple objective decision making (modm) model has been developed by viewpoint of these subjects. they are decreasing wastes and increasing system availability. wast...

This paper presents an enhanced merit order (EMO) and augmented Lagrange Hopfield network (ALHN) for unit commitment (UC). The EMO method is a merit order based heuristic search for unit scheduling and ALHN is a continuous Hopfield network based on augmented Lagrange relaxation for economic dispatch problem. First, generating units are sorted in ascending average production cost and committed t...

A chance-constrained programming-based optimization model for the dynamic economic emission dispatch problem (DEED), consisting of both thermal units and wind turbines, is developed. In proposed model, probability scheduled power (WP) included in set problem-decision variables it determined based on system spinning reserve load at each hour horizon time. This new strategy avoids, one hand, risk...

With the wide deployment of renewable energies, future power grids become more vulnerable to extreme environments. This paper investigates enhancing resilience systems with high penetrations energies under emergencies. The enhancement firstly is defined as maintaining much electric energy critical loads in a fixed number post-disaster periods by properly coordinating available resources. Then, ...

Optimal operation of power systems with high integration of renewable power sources has become difficult as a consequence of the random nature of some sources like wind energy and photovoltaic energy. Nowadays this problem is solved using the Monte Carlo Simulation (MCS) approach, which allows the consideration of important statistical characteristics of wind and solar power production, such as...