A limited but growing number of studies point to mixed effects social protection on cohesion. Relatively little is known about the role cohesion access and impact protection. Based in-depth qualitative research in Burundi Haiti, this paper explores bi-directional relationship between The analysis focuses horizontal forms within a particular set comprehensive interventions that provide bundled p...

The access of large-scale renewable energy and power electronic equipment to the grid makes source short-circuit paths possess time-varying characteristics when faults occur, which has a serious impact on traditional protection based frequency components. Besides, higher requirements are needed for relay in grid. transient fault current contains large amount information. First, bus capacitance ...

Protection of the natural environment is one most significant global challenges for international community. World problems arising as a result incineration fossil fuels, excessive CO2 emissions, erosion and soil degradation, well air pollution with accelerating greenhouse effect changes to climate condition, make it necessary take action at many levels. Environmental protection resources need ...

In this paper, the optimization of coordination of directional overcurrent relays in an interconnected power system is presented. The objective of protective relay coordination is to achieve selectivity without sacrificing sensitivity and quick fault clearance time. A methodology is adopted for the consideration of backup relays in the optimal coordination of directional overcurrent relays. The...

An accurate fault detection, classification and direction estimation of double end fed transmission lines based on application of artificial neural networks is presented in this paper. The proposed method uses the phase voltage and current available at only the local end of line. This method is adaptive to the variation of fault inception angle, fault location and high fault resistance. The alg...

The issue of pressure sensitivity of anisotropic sheet metals is investigated with introducing two new non-AFR criteria which are called here linear and non-Linear pressure sensitive criteria. The yield and plastic potential functions of these criteria are calibrated with directional tensile/compressive yield stresses and directional tensile Lankford coefficients, respectively. To determine unk...

  Omni directional mobile robots have been popularly employed in several applications especially in soccer player robots considered in Robocup competitions. However, Omni directional navigation system, Omni-vision system and solenoid kicking mechanism in such mobile robots have not ever been combined. This situation brings the idea of a robot with no head direction into existence, a comprehensi...

It has been clarified that deformation and annealing of martensite starting structure can produce ultrafine-grained structure in low carbon steel.  This study aims to investigate the texture evolution and mechanical properties of samples with martensite structure deformed by two different forging processes. The martensitic steel samples were forged by plane strain compression and multi-directio...