Advanced electronic control systems for electric vehicles
The characteristics and relative advantages of several types of electric vehicle control systems are discussed. An advanced electronic control system for a separately excited dc motor is described. Performance characteristics of an electric vehicle using this control are discussed and recommendations for future systems are given.
ELECTROCHEMICAL POWER FOR TRANSPORTATION
The use of electrochemical power in transportation vehicles is an old concept that has a good probability of again playing a significant role in the transportation industry. It is interesting to note that this is occurring almost a century after its initial success in the late 1800s and early 1900s. It is appropriate to include in this section some historical background of the rise and fall and subsequent rebirth of the electric vehicle, as well as a brief discussion of current transportation needs, and environmental and energy utilization issues that resulted in the renewed interest in applying electrochemical energy conversion technology to electric vehicle applications. Although energy utilization has become the most significant and important issue, the environmental issue will be discussed first in this section only because of its chronological occurrence.
Ethics and the Treatment of the Mentally Ill, Homeless Person: a Perspective on Psychiatry Resident Training
ObjectiveThe authors outline the unique ethical challenges that psychiatry residents face in working with individuals who are homeless and mentally ill. The authors also propose steps to develop effective teaching methods with residents working with these patients.MethodsThe authors reviewed literature relevant to the training of psychiatry residents in ethics and treating individuals who are homeless and mentally ill.ResultsThe authors summarize current literature and, with the use of case examples, provide guidelines for effective teaching.ConclusionsTeaching psychiatry residents who are working in the community with individuals who are mentally ill and homeless needs to address a number of unique ethical conflicts that arise in this area. The authors outline approaches to this teaching.