1,385 research outputs found

    Self-similar voiding solutions of a single layered model of folding rocks

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    In this paper we derive an obstacle problem with a free boundary to describe the formation of voids at areas of intense geological folding. An elastic layer is forced by overburden pressure against a V-shaped rigid obstacle. Energy minimization leads to representation as a nonlinear fourth-order ordinary differential equation, for which we prove their exists a unique solution. Drawing parallels with the Kuhn-Tucker theory, virtual work, and ideas of duality, we highlight the physical significance of this differential equation. Finally we show this equation scales to a single parametric group, revealing a scaling law connecting the size of the void with the pressure/stiffness ratio. This paper is seen as the first step towards a full multilayered model with the possibility of voiding

    Total Economic Impact of The Upjohn Company on Kalamazoo County, 1987

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    The Business Climate in Michigan: Wage & Tax Cost Considerations

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    Uses a broad definition of business climate to assess the attractiveness of Michigan as a place to do business.https://research.upjohn.org/up_press/1138/thumbnail.jp

    Michigan\u27s Business Tax Costs Relative to the Other Great Lakes States

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    Offers a picture of Michigan\u27s tax costs relative to other Great Lakes states.https://research.upjohn.org/up_press/1124/thumbnail.jp

    The Robots are Coming

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    The authors contend that the introduction of robots into the workplace is simply another stage in the long history of the automation of production, and that the effects will be evolutionary rather than revolutionary.https://research.upjohn.org/up_press/1133/thumbnail.jp

    Clerical Employment and Technological Change

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    Reviews 30 years of evidence of technological change on clerical employment, and projects no decline in the demand for these jobs as a result of new technologies.https://research.upjohn.org/up_press/1121/thumbnail.jp
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