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  2. Helix of sustainability - Wikipedia

    en.wikipedia.org/wiki/Helix_of_sustainability

    The helix of sustainability - the Carbon cycle ideal for manufacture and use The international recycling symbol - not nature identical.. The helix of sustainability is a concept coined to help the manufacturing industry move to more sustainable practices by mapping its models of raw material use and reuse onto those of nature.

  3. SQ3R - Wikipedia

    en.wikipedia.org/wiki/SQ3R

    Survey ("S") The first step, survey, skim, or scan advises that one should resist the temptation to read the book and instead first go through a chapter and note the headings, sub-headings, and other outstanding features, such as figures, tables, marginal information, and summary paragraphs.

  4. Triple helix model of innovation - Wikipedia

    en.wikipedia.org/wiki/Triple_helix_model_of...

    The triple helix model of innovation, as theorized by Etzkowitz and Leydesdorff, is based on the interactions between the three following elements and their associated 'initial role': [9] universities engaging in basic research, industries producing commercial goods and governments that are regulating markets. [2]

  5. Analytic hierarchy process - Wikipedia

    en.wikipedia.org/wiki/Analytic_hierarchy_process

    An illustrated guide (pdf) – Dr. Oliver Meixner University of Wien – "Analytic Hierarchy Process", a very easy to understand summary of the mathematical theory; AHP example with Matlab implementation – AHP explanation with an example and matlab code. R ahp package – An AHP open source package.