نتایج جستجو برای: four bar linkage
تعداد نتایج: 701030 فیلتر نتایج به سال:
BACKGROUND Mountain and road bike accidents are particularly common with the increased popularity of the sport. We reviewed the attendances in our emergency department over a 4-year period looking at cycling injuries to detect the level and grade of these injuries and their outcomes. METHOD Royal Blackburn Hospital caters for a population of 550 000. A search through the Hospital information ...
Abstract Inspired by the jumping action of frogs, the mechanical structure of four-legs jumping robot is given particularly. This robot is used for the rough terrains or wetland environmental exploration. The four identical legs are mainly composed of a six-bar spring/linkage mechanism integrated with two springs. The D-H parameters, the forward kinematics equation and mechanics analysis on one...
Augmented reality (AR) is a technology that enables the users to visualize and interact with 3D virtual object, which is digitally processed and augmented in real time and environments. The use of AR in education has a wide potential of providing learners with a new type of learning material, and it has the capability to enrich the learning experience; especially in learning the kinesthetic and...
Adaptive variation in the craniofacial skeleton is a key component of resource specialization and habitat divergence in vertebrates, but the proximate genetic mechanisms that underlie complex patterns of craniofacial variation are largely unknown. Here we demonstrate that the Hedgehog (Hh) signaling pathway mediates widespread variation across a complex functional system that affects the kinema...
Enabled by advances in both integrated circuit technology and micro electrome-chanical systems (MEMS), the continuing miniaturization and integration of electronics, sensors, actuators and mechanisms will make it feasible to create insect-sized autonomous microrobots. We propose to create a class of autonomous crawling microrobots the size on the order of 1cm 3 and equipped with a power source,...
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