19 research outputs found

    New perspectives - approaches to medical education at four new UK Medical Schools

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    To create more UK doctors, the government has funded an increase in medical student numbers of 57% (from 3749 to 5894)1 between 1998 and 2005. This has been done by increasing student places at existing medical schools; creating shortened programmes open to science graduates; “twinning” arrangements, which host an existing curriculum at a new site; and four entirely new schools (table 1). Through reflection on our experiences and the literature evidence, we examine to what extent these new schools have a common vision and approach to undergraduate medical education, and we discuss the rationale for and likely outcomes of these new ventures

    The development of a new maximum power point tracker for a PV panel

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    The PV systems are rapidly expanding and have increasing roles in electric power technologies, providing more secure power sources and pollution free electric supplies. Since the PV electricity is expensive compared to the electricity from the utility grid, users want to use all the available output PV power. Therefore, the PV systems should be designed to operate at their maximum output power for any temperature and solar radiation level. In this paper, we consider a photovoltaic panel supplying a battery. For maximizing the output power of this panel, we have using a boost dc/dc converter controlled by a PI regulator. For synthesizing this regulator, we have replaced the converter with an equivalent continuous model when we have considered the mean values, over the chopping period, of the electric quantities. Then, we have developed the transfer function of the system by using the small signal modeling around an optimal operating point. A PI synthesis has been achieved by using Bode method. In the study, we have taken into account the converter losses. Coefficients Kp and KI obtained of PI regulator lead to good simulations. The theoretical results confirm excellent tracking effectiveness response. The regulator operates correctly on a large range
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