Political demography, or the systematic study of population changeand politics, public policies and polities, sees population dynamics (struc-ture and change) as one of the main drivers of politics at the meso-and macro-level. As an approach, it can be defined as the study of thedynamics in the size, composition and distribution of populations andtheir effects on political and policy processes.…
Properties of materials include mechanical properties (such as strength, hardness, toughness), thermal properties (conductivity), optical properties (refractive index), electrical properties (resistance) etc. Here, however, we shall concentrate only on mechanical properties which are most important in manufacturing processes and also in everyday life and we use these terms quite often. To under…