CNBC's David Faber reports D.E. Shaw, the $50 billion hedge fund that in recent years has engaged in shareholder activism along with it's many other disciplines, will make public Tuesday that it has more than 1% position in Emerson Electric and is embarking on a campaign to bring significant change to the industrial giant that includes asking the company to split its industrial automation business from its climate technology business, while embarking on a significant effort to cut costs.