abstract     in order to select the best planting distributions on the rows and study their effects on morphological traits and uptake amount of some nutrients including nitrogen, phosphorus, potassium and calcium in forage of common vetch (vicia sativa) a factorial experiment was carried out with randomized complete block design and 3 replications in research field of mohaghegh ardabili univer...

Fault management in distribution systems lacks effective solution because of the unavailability of sufficient measurement data and comprehensive tools for fault analysis. To improve fault management, a systematic approach that takes advantage of distribution-level Smart Grid technologies is proposed. The new approach executes very accurate fault locating first, and then advices system operators...

The Smart Grid concept introduces an updated architecture and new elements to the traditional power grid. As a result, existing survivability schemes that have been designed with a centralized architecture in mind are either inefficient or no longer applicable. In this paper, we review several solutions that have been suggested in the literature in order to ensure the proper operation of the po...

in methods presented to calculate the voltage collapse point, the transmission system is usually the only part of the power system that is completely modeled. distribution systems are often replaced by aggregate load models because the use of the detailed model of distribution systems in voltage stability analysis not only increases the computation time, but also decreases the probability of co...

introduction: vertical root fracture (vrf) is common in endodontically treated teeth. conventional and digital radiographies have limitations for detection of vrfs. cone-beam computed tomography (cbct) offers greater detection accuracy of vrfs in comparison with conventional radiography. this study compared the effects of metal artifacts on detection of vrfs by using two cbct systems. methods a...

Information retrieval is one of the most important technologies at present. We can always get information in the Internet or distributed computing systems using various information retrieval models. For searching proper information that we need, it is necessary to construct efficient information retrieval agent systems helping many web clients’ requests. In this paper, we propose a simple new m...

for any agency dealing with the design of the water distribution network, an economic design will be an objective. in this research, central force optimization (cfo) and differential evolution (de) algorithm were used to optimize ismail abad water distribution network. optimization of the network has been evaluated by developing an optimization model based on cfo and de algorithm in matlab and ...