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However it took another 10 years before the theory could be applied to the problem of the Klein paradox. In 1941 Friedrich Hund showed that, [8] under the conditions of the paradox, two currents of opposite charge are spontaneously generated at the step. In modern terminology pairs of electrons and positrons are spontaneously created the step ...
Skolem's paradox: Countably infinite models of set theory contain sets that are uncountable in the sense of the model. Zeno's paradoxes : "You will never reach point B from point A as you must always get half-way there, and half of the half, and half of that half, and so on."
Klein is also credited for inventing the idea, part of Kaluza–Klein theory, that extra dimensions may be physically real but curled up and very small, an idea essential to string theory. In 1938, he proposed a boson-exchange model for charge-charging weak interactions (radioactive decay), a few years after a similar proposal by Hideki Yukawa .
Created Date: 8/30/2012 4:52:52 PM
Getty By Gus Lubin Different cultures can have radically different leadership styles, and international organizations would do well to understand them. British linguist Richard D. Lewis charted ...
Functional leadership theory (Hackman & Walton, 1986; McGrath, 1962) is a theory for addressing specific leader behaviors expected to contribute to organizational or unit effectiveness. This theory argues that the leader's main job is to see that whatever is necessary to group needs is taken care of; thus, a leader can be said to have done ...
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The original theory had already proposed moderators that act as substitutes and moderators that act as neutralizers. Howell and colleagues added enhancers to these. [12] Substitutes for leadership theory was a heavily researched area until the late 1980s when transformational leadership became the focus of the majority of leadership research. [13]