In this article, we explore the potential of the computer to support curriculum materials development within the context of secondary level science and mathematics education in southern Africa. During the four-year course of the study, a computer program was developed named CASCADE-SEA, which stands for Computer Assisted Curriculum Analysis, Design and Evaluation for Science (and mathematics) E...

Past Researches: Diffusion of virus in computer networks, information cascade in social networks, cascade failure on networks, diffusion of diseases between peoples are samples of diffusion on complex networks. Actually, diffusion or cascade is a general term for transmission trough links which is established among persons or objects. Mathematical modeling of this transmission process provides ...

Selectivity rules in organic chemistry have been inferred largely from nonaqueous environments. In contrast, enzymes operate in water, and the chemical effect of the medium change remains only partially understood. Structural characterization of the "ladder" polyether marine natural products raised a puzzle that persisted for 20 years: Although the stereochemistry of adjacent tetrahydropyran (T...

The evolution of mesoscale eddies is crucial for understanding the ocean energy cascade. In this study, using global reanalysis sea surface velocity data and a eddy trajectory product tracked by satellite altimeters, we aimed to reveal coherence kinetic (EKE) variation low-frequency ageostrophic during life span. in EKE throughout span was highly coherent that seven-day low-passed energy, with ...

This paper discusses the relationship between modular products and manufacturing. The relationship is based on an expanded definition of modularity which incorporates the potential of modularity based not only on end uses of a product but also on the manufacturing processes. By incorporating this expanded definition of modularity, called manufacturing modularity , into product development, a mo...

If combined with renewably generated electricity, electrochemical CO2 reduction (E-CO2R) could be used as a sustainable source of chemicals and fuels. Tandem catalysis approaches are attractive for providing the product selectivity, which would required commercial applications. Here, we demonstrate two-step tandem electrocatalytic E-CO2R efficient conversion intermediate species. The catalyst s...

A class of cascade filters, orthogonal with respect to a new inner product, is presented in this paper. A sequence of generalized Malmquist orthogonal rational functions is used for design of these filters. In addition, by using these functions Müntz polynomials which are orthogonal in respect to a special inner product were derived. Obtained Müntz polynomials are applied in determination of ou...