منابع مشابه
Quantitative genetics of plastron shape in slider turtles (Trachemys scripta).
Shape variation is widespread in nature and embodies both a response to and a source for evolution and natural selection. To detect patterns of shape evolution, one must assess the quantitative genetic underpinnings of shape variation as well as the selective environment that the organisms have experienced. Here we used geometric morphometrics to assess variation in plastron shell shape in 1314...
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Tangible sliders are successfully used as they do not need visual attention. However, users need to balance between opposite concerns: size and precision of the slider. We propose a resizable tangible slider to balance between these concerns. Users can resize the on-screen representation of the slider by resizing the tangible slider. Our aim is to benefit from both tangibility and flexible cont...
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A 298 W hen Iceland became the first country to ban most forms of asbestos in 1983, 1 global use hovered around 4.3–4.7 million metric tons per year. 2 Twenty-five years later, with several dozen countries now implementing some form of ban, 1 that number had dropped to 2.1 million metric tons. 3 Today, while demand has plummeted in most developed countries, it continues to rise in those countri...
متن کاملThe Slider-Pinning Problem
A Laman mechanism is a flexible planar bar-and-joint framework with m ≤ 2n− 3 edges and exactly k = 2n−m internal degrees of freedom. The mechanism can be completely immobilized by constraining the coordinates of some of the vertices to lie on fixed straight lines. The Slider Pinning problems asks for the minimum set of sliders that will pin a given mechanism. A particular degenerate case is to...
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This paper presents the implementation of a deformable slider joint in the framework of a multibody simulation environment. A slider joint constrains the motion of a rigid body point along a line: a deformable slider joint allows the constrained point to move along a series of deformable beams, switching from one to the other without encountering serious numerical discontinuities. The behavior ...
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ژورنال
عنوان ژورنال: Wear
سال: 1980
ISSN: 0043-1648
DOI: 10.1016/0043-1648(80)90183-0