## 2 Materials and Methods
### Definition of New Integrated LCA+C2C Categories
\begin{table}
\begin{tabular}{c c c c c} \hline \hline \(\mathbf{J_{k}}\) & \(\mathbf{I_{jk}}\) & & & \(\mathbf{K}\) \\
**Causes** & **Effects** & & & **Damage (Protected Areas)** \\ \hline \begin{tabular}{c} **Resources** \\ (\(\mathbf{I_{jk}}\)) \\ \end{tabular} & **Midpoint Category** & \(\mathbf{C_{i}}\) **[unit]/N\({}_{i}\) [unit]** & **Type** & \(\alpha_{ijk}\) & \
\begin{tabular}{c} **LCA+C2C Endpoint** \\ **Category (Q\({}_{\text{L}}\))** \\ \end{tabular} \\ \hline \multirow{6}{*}{Human (H)} & Health and safety (all stakeholders) & Color/[1, 6] & S & 0.36 \\ \cline{2-5}  & Fair salary and hours of work & Color/[1, 6] & S & 0.18 \\ \cline{2-5}  & Equal opportunities, discrimination and association & Color/[1, 6] & S & 0.18 \\ \cline{2-5}  & Social benefits and social security & Color/[1, 6] & S & 0.09 \\ \cline{2-5}  & Child labor and forced labor & Color/[1, 6] & S & 0.18 \\ \hline \multirow{6}{*}{Land (L)} & Access to resources (material and non-material) & Color/[1, 6] & S & 0.25 \\ \cline{2-5}  & Problems related to society: delocalization and migration, armed conflicts and rights & Color/[1, 6] & S & 0.38 &
\begin{tabular}{c} Q\({}_{\text{HS}}\) \\ Anthropo-sphere, care for human safety and \\ well-being \\ \end{tabular} \\ \cline{2-5}  & Contribution to economic and technological development & Color/[1, 6] & S & 0.38 \\ \hline \multirow{6}{*}{Information (I)} & Cultural heritage & Color/[1, 6] & S & 0.08 \\ \cline{2-5}  & Community engagement and public commitments & Color/[1, 6] & S & 0.17 \\ \cline{2-5}  & Feedback mechanism and consumer privacy & Color/[1, 6] & S & 0.17 \\ \cline{2-5}  & Transparency and corruption & Color/[1, 6] & S & 0.17 \\ \cline{2-5}  & End of life and social responsibility & Color/[1, 6] & S & 0.25 \\ \cline{2-5}  & Fair competition and intellectual property rights & Color/[1, 6] & S & 0.17 \\ \hline \multirow{6}{*}{Materials (M)} & Global warming & Kg CO\({}_{2}\) eq/unit & En & 0.34 \\ \cline{2-5}  & Acidification & Kg SO\({}_{2}\) eq/unit & En & 0.13 \\ \cline{2-5}  & Fresh water and marine aquatic ecotoxicity & Kg 1.4-DB eq/unit & En & 0.19 \\ \cline{2-5}  & Terrestrial ecotoxicity & Kg 1.4-DB eq/unit & En & 0.08 \\ \cline{2-5}  & Eutrophication & Kg PO\({}_{4}\) eq/unit & En & 0.26 \\ \hline Energy (E) & Global warming & kg CO\({}_{2}\) eq/unit & En & 1.00 \\ \hline \multirow{6}{*}{Water (W)} & Acidification & kg SO\({}_{2}\) eq/unit & En & 0.33 \\ \cline{2-5}  & Fresh water and marine aquatic ecotoxicity & kg 1.4-DB eq/unit & En & 0.33 \\ \cline{2-5}  & Eutrophication & kg PO\({}_{4}\) eq/year & En & 0.33 \\ \hline Land (L) & Land use/transformation & m\({}^{2}\)/year & En & 1.00 \\ \cline{2-5}  & Mineral resource depletion & Kg Sb eq/year & En & 0.60 \\ \cline{2-5}  & Cumulative energy demand & MJ eq/year & En & 0.40 \\ \hline Water (W) & Water use/depletion & m\({}^{3}\)/year & En & 1.00 \\ \hline \multicolumn{5}{c}{\(C_{i}\)_characterization; N\({}_{i}\): normalization; \(\alpha_{ijk}\): weighting factor LCA+C2C; En: environmental parameter; S: social parameter._} \\ \end{tabular}
\end{table} 
Table 2: _Cont._date) to the current period. These two indices make it possible to determine the overall efficiency of the CIP. \[\mathrm{IP_{\%}}=\frac{\mathrm{FEI(t_{e})-FEI(t_{e}-1)}}{\mathrm{FEI(t_{e})}} \tag{6}\]  
\[\mathrm{IP_{T}}=\frac{\mathrm{FEI(t_{e})-FEI(t_{0})}}{\mathrm{R-1}} \tag{7}\]  
where:  
* \(\mathrm{IP_{R\%}}\), the ratio of product improvement in two consecutive periods. * \(\mathrm{IP_{T}}\), the changing trend in the complete evolution of the product (between generations or variants). If \(\mathrm{IP_{T}}>0\), the product evolves correctly; if \(\mathrm{IP_{T}}<0\), the strategies defined are not the correct ones, so it will be necessary to change the CIP. * \(\mathrm{FEI(t_{e})}\), the FEI indicator to be evaluated in the current period. * \(\mathrm{FEI(t_{e}-1)}\), the FEI indicator to be evaluated in the previous period.