The One Minute Manager The One Minute Manager The One Minute Manager is a very short book by Ken Blanchard and Spencer Johnson. The brief volume tells a story, recounting three techniques of an effective manager: one-minute goals, one-minute praisings and one-minute reprimands. Each of these takes only a minute but is purportedly of lasting benefit. It was followed by a sequel, "Leadership and the One Minute Manager", by Ken Blanchard, Patricia Zigarmi and Drea Zigarmi, which laid out Blanchard's Situational Leadership II concept. The concept has been called a management fad, and derivative of management by objectives, itself derived from the business planning
History of longitude European and North American longitude measurement campaigns in the 1850s and 1860s, resulting in improved map accuracy and navigation safety. Synchronization by radio followed in the early 20th century. In the 1970s, the use of satellites was developed to more precisely measure geographic coordinates (GPS). In the process of searching for a solution to the problem of determining longitude, many scientists added to the knowledge of astronomy and physics. History of longitude The history of longitude is a record of the effort, by astronomers, cartographers and navigators over several centuries, to discover a means of determining longitude. The measurement of