Carbon, circularity and criticality: sourcing model and parameters
炭素、循環性、および重要度：調達モデルとパラメータ (AI 翻訳)
Bart Lahcen
🤖 gxceed AI 要約
日本語
本モデルは、材料調達における炭素排出、循環性、供給リスクを統合的に評価する線形計画モデルです。購入者の材料要件を複数の供給ルートに配分し、単一国依存の上限、再生材含有率の下限、ルート容量制約の下で、埋め込み炭素を最小化します。制約の限界価格や実現可能領域の限界を導出し、リチウム、ネオジム、NMC811の3ケースで実証しています。
English
This linear programming model integrates carbon, circularity, and supply risk in materials sourcing. It allocates a purchaser's requirement across supply routes, minimizing embodied carbon subject to caps on single-country exposure, recycled content floors, and capacity limits. It derives shadow prices and feasibility limits, demonstrated on lithium, neodymium, and NMC811 cases.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本の製造業、特に電池・モーター関連企業は、サプライチェーン排出量（Scope 3）の算定と削減が求められており、本モデルは調達戦略の脱炭素化と供給リスク管理を同時に考慮する枠組みを提供します。SSBJ開示やサプライヤーとの協働において、実践的な意思決定支援ツールとして活用可能です。
In the global GX context
This model addresses the global challenge of balancing decarbonization with supply chain security, particularly for critical minerals. It provides a transparent, decision-level framework that aligns with TCFD/ISSB expectations for climate-related risk assessment and supports transition finance by quantifying trade-offs between carbon and resilience.
👥 読者別の含意
🔬研究者:Provides a replicable LP framework for multi-objective sourcing optimization with shadow pricing, useful for extending to other materials or constraints.
🏢実務担当者:Offers a practical tool for procurement teams to evaluate sourcing options against carbon, circularity, and security criteria, aiding in Scope 3 reduction strategies.
🏛政策担当者:Demonstrates how policy constraints (e.g., recycled content mandates) impact carbon outcomes and supply chain resilience, informing regulatory design.
📄 Abstract（原文）
Linear programming model, parameter set and outputs for a tiered, decision-level treatment of carbon, circularity and criticality in materials sourcing. The model allocates a purchaser's requirement for one material across available supply routes, minimising embodied carbon subject to a cap on single-country exposure, a floor on recycled content, and route capacity limits. Re-solving over a sequence of caps or floors traces the attainable frontier and returns the shadow price of each binding constraint, the marginal carbon conceded per unit of security or of recycled content, together with the feasibility limits beyond which no compliant sourcing mix exists. Three cases are included: battery-grade lithium hydroxide monohydrate, neodymium oxide for permanent magnets, and NMC811 cathode active material. Carbon intensities are taken, for each case, from a single study reporting all routes on a common boundary and allocation convention, and every parameter carries a provenance flag distinguishing evidenced values, values derived by a stated operation, and assumptions. The deposit contains the model, the parameter file, the frontier and sensitivity outputs, and documentation of sources and scope conditions. The model prints eight verification checks, computed independently of the solver, before writing any output.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.5281/zenodo.21869342first seen 2026-08-12 04:55:27
🔔 こうした論文の新着を逃したくない方は キーワードアラート に登録（無料・3キーワードまで）。
gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。