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And herein lies the irony of the situation, certainly as far as African Americans were concerned. On one hand the machine was regarded as a curse because it represented a threat to employees. But the last hired, first fired employment principle that was applied to African American employees made the machine an even greater threat to them. Then, on the other hand, the machine reduced the amount of human physical exertion required to accomplish a task. Since racist discrimination insured that African Americans would end up with the least desirable, most arduous tasks, machines were then...

This book is about single and split phase induction motor controller. The features controlled are switching, direction and speed of the motor through remote location (PC) and local location (keypad) while measuring and display the RPM of the motor on a MONITOR SCREEN and LCD. The industry mostly uses DC motor due to their easy control but they have their disadvantages of high maintenance cost and inability to work in corrosive or explosive environment. The control of an AC motor are usually complex and require complex algorithms to be implemented but AC motors are light, inexpensive and have...

From 2013 to 2015, over eleven thousand people across West Africa lost their lives to the deadliest outbreak of the Ebola virus in history. Crucially, this epidemic marked the first time the virus was able to spread beyond rural areas to major cities, infecting tens of thousands and overturning conventional assumptions about its epidemiology. With backgrounds ranging from development to disease control, the contributors to this volume, many of whom are based in countries affected by the Ebola epidemic, consider the underlying factors that shaped this unprecedented outbreak.
While...