Axis (anatomy) The condition, where the dens is separated from the body of the axis, is called os odontoideum, and may cause nerve and circulation compression syndrome. On its anterior surface is an oval or nearly circular facet for articulation with that on the anterior arch of the atlas. On the back of the neck, and frequently extending on to its lateral surfaces, is a shallow groove for the transverse atlantal ligament which retains the process in position. The apex is pointed, and gives attachment to the apical odontoid ligament; below the apex the process is somewhat enlarged, and presents on either
The Atlas of Economic Complexity of Economic Complexity was launched in 2011. In 2013, Harvard's Center for International Development released a version of the OEC entitled the Atlas online. The Harvard version also builds on the original code base developed by Alex Simoes at the MIT Media Lab. The data are from the following data sources, cleaned and made compatible: The Atlas is distributed under a creative commons license which makes it free for non-commercial use. The Atlas of Economic Complexity The Atlas of Economic Complexity is a 2011 economics book by Ricardo Hausmann, Cesar A. Hidalgo, Sebastián Bustos, Michele Coscia, Sarah Chung, Juan Jimenez,