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Richard Beckhard (1918–1999) was an American organizational theorist, adjunct professor at MIT, and researcher in the field of organization development. Beckhard co-launched the Addison-Wesley Organization Development Series and began the Organization Development Network in 1967. [ 1 ]
"It is worth a library of books on the subject of history" (G. McCloskie, L.L.D. Professor of Natural History at Princeton College) "Indicates at a glance the date, progress, and synchronism of historical events, as clearly as could be learned in days and weeks in ordinary historical works" (A.D. Hager, Secretary, Chicago Historical Society)
Beckhard lists six such assumptions: The basic building blocks of an organization are groups . Therefore, the basic units of change are groups, not individuals. An always relevant change goal is the reduction of inappropriate competition between parts of the organization and the development of a more collaborative condition.
There are several types of timeline articles. Historical timelines show the significant historical events and developments for a specific topic, over the course of centuries or millennia. Graphical timelines provide a visual representation for the timespan of multiple events that have a particular duration, over the course of centuries or ...
These timelines of world history detail recorded events since the creation of writing roughly 5000 years ago to the present day. For events from c. 3200 BC – c. 500 see: Timeline of ancient history; For events from c. 500 – c. 1499, see: Timeline of post-classical history; For events from c. 1500, see: Timelines of modern history
For a timeline of events prior to 1501, see 15th century § Events; For a timeline of events from 1501 to 1600, see 16th century § Significant events; For a timeline of events from 1601 to 1700, see Timeline of the 17th century
The date used as the end of the ancient era is arbitrary. The transition period from Classical Antiquity to the Early Middle Ages is known as Late Antiquity.Late Antiquity is a periodization used by historians to describe the transitional centuries from Classical Antiquity to the Middle Ages, in both mainland Europe and the Mediterranean world: generally from the end of the Roman Empire's ...
1940 – Billboard magazine publishes its first music popularity chart, the predecessor to today's Hot 100 1940 – U.S. presidential election, 1940 : Franklin D. Roosevelt is reelected president to a record third term, Henry A. Wallace is elected vice president