This paper contributes with a new two-stage optimization methodology to solve the problem of optimal placement and sizing solar photovoltaic (PV) generation units in medium-voltage distribution networks. The is formulated mixed-integer nonlinear programming (MINLP) model, where it combines binary variables regarding nodes PV generators will be located continuous associated power flow solution. ...

We study the general problem of an agent wishing to minimize the risk of a position at a fixed date. The agent trades in a market with a risky asset, with incomplete information, proportional transaction costs, and possibly constraints on strategies. In particular, this framework includes the problems of hedging contingent claims and maximizing utility from wealth. We obtain a minimization prob...

In the most recent heuristic methods, the high potential buses for capacitor placement are initially identified and ranked using loss sensitivity factors (LSFs) or power loss index (PLI). These factors or indices help to reduce the search space of the optimization procedure, but they may not always indicate the appropriate placement of capacitors. This paper proposes an efficient approach for t...

This paper used Data Envelopment Analysis (DEA) to measure the technical efficiency of fishing vessels in Haizhou Bay, and then used the Tobit regression to define its influencing factors. This study shows that the overall fishing capacity utilization of fishing vessels at present is very low which indicates that there is a serious problem of waste of resources in Haizhou Bay. Specifically, the...

Background: The prevalence of autism spectrum disorder (ASD) as a child neurodevelopmental disorder has increased significantly during the past 3 decades worldwide and in Iran. This chronic disease does not cause premature death and there is no definitive treatment. Thus, the cost of ASD is extremely heavy and overwhelming. The purpose of this study is to calculate the economic burden of ASD in...