Sumatra Island and its surroundings, Indonesia, are one of the most active tectonics in world. The Aceh-Andaman earthquake, destructive earthquakes world, occurred there. It has attracted many earth scientists to apply various methods, including seismic tomography, understand island’s subsurface structure tectonic system. This study is first delineate imaging beneath island surroundings using a...

We describe new methods for the construction of spiral toolpaths for high-speed machining. In the simplest case, our method takes a polygon as input and a number δ > 0 and returns a spiral starting at a central point in the polygon, going around towards the boundary while morphing to the shape of the polygon. The spiral consists of linear segments and circular arcs, it is G continuous, it has n...

One of the most important issues for Muslim philosophers is the continuous imaginal world and its relationship with the discontinuous imaginative faculty. The continuous imaginal world is a perceptive faculty of the soul known as the faculty of imagination. The discontinuous imaginative faculty is the order of the universe called the imaginal world, which Muslim philosophers have portrayed in a...

A method is presented to interpolate real affine plane curves with second degree NURBS (Non Uniform Rational Bezier Splines). The curve into object is initially partitioned into an arbitrary number of arcs. Then each arc is approximated with a conic section passing thru its extremes, thru a third intermediate point and being tangent to the arc at the extremes. Each arc is then parameterized by ...

Continental arcs have an episodic magmatic activity over long-time periods, which is believed to modulate long-term climate. Island also the potential release large amount of CO 2 into atmosphere, but whether they display history throughout their lifespan that contributes (>10 Ma) climate changes remains open question. To set additional constraints on island arcs, here we examine fresh b...