Talk:WikiJournal Preprints/Life Cycle Assessment methodology

Building working team and agreements
As I started this as a proposal to Nigel Howard, it may evolve in many ways. We may receive contributions from non-wikimedian regular users (or from wikimedian spaces with alternatives social codes) and will appreciate any piece of advice to make this trial successful.

BR

Rudy PATARD

--RP87 (discuss • contribs) 09:44, 29 January 2018 (UTC)

Selected topics
Here is a set of topics. According to the debate we may develop protocols, tests and experiments to refine the assessment methodology.

Rules proposal:
 * Case study should not be introduced here apart from pointing to a methodological question. Applications already found their place in the existing literature

Historical development of impact assessment, from LCA precursors to latest developments
Understanding how and why we made LCA as it is currently and identify characteristics, from potential unproductive relics to 'most wanted features'.

Consequential VS Attributional
The consequential / attributional debate is about whether or not taking consideration in value chain transformation (due to interaction with demand on a 'joint process'). Any choice alter the future so slightly moves value chain equilibrium and consideration on time horizon (forward) implies selecting projection on "what supply chain will be". And going upstream the "life cycle" should use what existed (historical data = mean or median when using central estimators ; carefully chosen between normal and log-normal ...). Consequently, there is (should be) always a 'consequential part' AND an 'attributional part' in any study around the separation part, this being 'present time'.

This quite solved the debate to do one or the other. It does not treat however of time horizon consistent integration and retroaction. i.e. Does the validation of past supply chain activities enact their systematic renewal and more generally how should the past impacts weight on future decisions... Economists and psychologists welcomed.

--RP87 (discuss • contribs) 22:00, 15 March 2018 (UTC)

Related Articles
Please Nigel Howard, would you do us a favor creating: WikiJournal Preprints/Marginally Adjusted Average LCA - Bridging the Gulf between Attributional and Consequential LCA based on the paper you produced, so we can give it a trial with the wikijournal peer reviewing process.

--RP87 (discuss • contribs) 09:14, 21 January 2019 (UTC)

"Weighting" and preferences
On the preferences integration in LCA.

Distance to target
Between objectivity and subjectivity, what do we know of bio-capacities and currents loads, how are modelled the risks and the judgment we lay on these.
 * models
 * data