Project management models: spiral model

The spiral model combines the idea of iterative development with the systematic, controlled aspects of the waterfall model. The spiral model has four phases. A software project repeatedly passes through these phases in iterations called Spirals. This means that the product is released incrementally. The Identification phase starts with gathering the business requirements in the … Read more

What is pythagorean theorem?

“ In mathematics the Pythagorean theorem, also known as pythagoras theorem is a fundamental relation in Euclidean geometry among the three sides of a right triangle.” Stephanie J. Morris says “This famous theorem is named for the greek mathematician and philosopher, Pythagoras. Pythagoras founded the pythagorean school of mathematics in cortona, a greek seaport in … Read more

Synthesis of Molecular trefoil Knots (31) by passive metal template RCM approach

Using the Alexander Briggs notation, the trefoil knot (31) is considered the simplest non-trivial knot and the most amenable to chemical synthesis. Many different synthetic approaches to prepare trefoil knots have been investigated. In particular, the passive metal template-directed methodology coupled with RCM has been successfully employed to mechanically restrict the relative positions of molecular … Read more