Debate about the epistemic prowess of historical science has focused on local underdetermination problems generated by a lack data; prevalence information loss over geological time, and capacities scientists to mitigate it. Drawing Leonelli’s recent distinction between ‘phenomena-time’ ‘data-time’ I argue that factors like data generation, curation management significantly complexifies undermin...

This paper deals with permanent magnet synchronous generator (PMSG) based wind energy conversion system (WECS) integrated with grid with two back to back connected converters with a common DC link. The aim of this research is to model control of direct driven 1.5 MW wind turbine permanent magnetic synchronous generator (PMSG) which feeds alternating current (AC) power to the utility grid .The m...

In this paper, a new guidance law is designed to improve the performance of a homing missiles guidance system in terminal phase. For this purpose first of all, the two dimensions equations of motion are formulated, then the approximation dynamic of missile control loop is added to these equations which are nonlinear whit unmatched uncertainty. Then, a new adaptive back-stepping method is develo...

The development of curriculum to facilitate the development of graduate entrepreneurship is a challenging task. That we can help graduate students become entrepreneurs is a frequently challenged assumption. To make matters worse there is little consensus as to how entrepreneurship education should be delivered. This paper argues that our focus should be first and foremost on the processes assoc...

Today, robots and unmanned aerial vehicles are being used extensively in modern societies. Due to a wide range of applications, it has attracted much attention among scientists over the past decades. This paper deals with the problem of the stability of a four-rotor flying robot called quadrotor, which is an under-actuated system, in the presence of operator or sensor failures. The dynamica...

The semi-active suspension system can instantly change the damping coefficient depending in order to ‘stiffen’ or ‘soften’ the system. It will effectively and timely eliminate road disturbances on the car body. Thus, research on the semi-active suspension system is necessary. According to the performance test of the proposed adjustable damper, the different damping coefficients can be selected ...