Most tissues in our bodies undergo constant cellular turnover. This process requires a dynamic balance between cell production and elimination. Stem cells have been shown in many of these tissues to be the major source of new cells. However, despite the tremendous advances made, it still remains unclear how stem cell behavior and activity are regulated in vivo. Furthermore, we lack basic unders...

Herbert A. Simon's characterization of modularity in dynamical systems describes subsystems as having dynamics that are approximately independent of those of other subsystems (in the short term). This fits with the general intuition that modules must, by definition, be approximately independent. In the evolution of complex systems, such modularity may enable subsystems to be modified and adapte...

purpose-the research aims at evaluating the standardization/adaptation of international marketing strategy in iran multinational companies (mncs) based a model in which the impact of external environmental variables on the marketing mix internal variables (i.e. product, promotion, price and place) is considered, while in the previous researches no attempt was done to examine the interdependency...

Within the context of a scoping study the paper examines factors having a possible effect on the nature of cognition achieved with regard to specific construction industry production process concepts. These factors are considered with regard to the level of cognition, as a follow-on from the act of visual perception, that may be achieved by individuals with regard to production process concepts...