tegwick
574bb11db6
Demonstrates infospace composition: the Wealth of Nations infospace is used as a discipline, applying Smith's economic framework as a lens to analyse modern supply chain management concepts. New example: examples/supply-chain-vsm/ - infospace.yaml binding WoN as discipline (../infospace-with-history) - 3 source documents: coordination mechanisms, capital & inventory, market structure (~400 words each, original content) - supply-chain-entity-schema-v1.0.md with WoN Concept required section - won-mapping-schema-v1.0.md with Conceptual Continuity rating - artifacts/won-reference/core-entities.md — 12 curated WoN entities for injection as discipline context - 8 hand-crafted entity files demonstrating LLM output format - 3 mapping files with full rationale and VSM inheritance chains - Viable: YES (5/5 thresholds) Key mappings demonstrated: Demand Signal → Effectual Demand (Strong, S2) Vendor-Managed Inventory → Division of Labour (Strong, S1/S2) Just-in-Time Inventory → Circulating Capital (Strong, S1/S3) Bullwhip Effect → Natural Price (Moderate, S2) Platform Intermediary → Merchant Capital (Strong, S2/S4) Monopsony Power → Combination of Masters (Strong, S3*) Platform fix: entity_parser.py now recognises ## Supply Chain Domain as a domain alias for ## Economic Domain, enabling composed infospaces to use their own domain section name. Tutorial §13 rewritten with real commands, real output, and the full mapping table from the demo. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
70 lines
3.6 KiB
Markdown
70 lines
3.6 KiB
Markdown
# Capital and Inventory in Supply Chain Management
|
||
|
||
## Inventory as Frozen Capital
|
||
|
||
Inventory is working capital immobilised in physical form. Every unit of
|
||
stock sitting in a warehouse represents capital that has been deployed but
|
||
not yet returned. The cash-to-cash cycle — the time between paying a
|
||
supplier and receiving payment from a customer — determines how much
|
||
working capital a business must hold at any moment. A long cycle requires
|
||
more capital; a short cycle requires less.
|
||
|
||
This relationship makes inventory management inseparable from capital
|
||
management. Decisions about how much stock to hold, where to hold it, and
|
||
in what form are simultaneously decisions about how to deploy scarce capital.
|
||
Excess inventory does not merely incur storage costs; it has an opportunity
|
||
cost equal to the return that capital could earn in its next best use.
|
||
|
||
## Just-in-Time Inventory
|
||
|
||
Just-in-time (JIT) inventory management is the practice of receiving goods
|
||
from suppliers only as they are needed in the production process or for
|
||
customer fulfilment, thereby minimising the volume of inventory held at any
|
||
moment. JIT was developed in the Japanese automotive industry and achieved
|
||
its most influential form at Toyota, where it became part of the Toyota
|
||
Production System.
|
||
|
||
The goal of JIT is to eliminate inventory as a buffer. Where traditional
|
||
manufacturing used inventory to absorb variability in supply and demand,
|
||
JIT addresses variability directly — through reliable supplier relationships,
|
||
short production runs, and rapid changeover. The capital released from
|
||
inventory reduction is the primary financial justification for the
|
||
substantial coordination investments JIT requires.
|
||
|
||
JIT succeeds when supply chains are stable, geographically concentrated,
|
||
and have high-quality supplier relationships. It fails when exposed to
|
||
supply shocks, as the 2011 Tōhoku earthquake and the 2020–2022 global
|
||
supply chain disruptions demonstrated: the same lean buffers that minimise
|
||
capital in stable conditions amplify vulnerability in unstable ones.
|
||
|
||
## Safety Stock and Reserve Capacity
|
||
|
||
Safety stock is inventory held in excess of expected demand to buffer
|
||
against uncertainty. It is a form of capital deliberately kept unproductive
|
||
in order to preserve operational continuity. The optimal safety stock level
|
||
balances the cost of holding excess inventory against the cost of stockouts —
|
||
lost sales, production stoppages, and damaged customer relationships.
|
||
|
||
The existence of safety stock reflects a fundamental trade-off in supply
|
||
chain design: capital efficiency versus operational resilience. A supply
|
||
chain optimised purely for capital efficiency holds no safety stock, but
|
||
collapses at the first supply disruption. A supply chain optimised for
|
||
resilience holds substantial safety stock, but earns a low return on
|
||
capital employed.
|
||
|
||
## Working Capital Optimisation
|
||
|
||
Working capital optimisation is the systematic management of the
|
||
cash-to-cash cycle to reduce the amount of capital tied up in operations
|
||
at any point. The primary levers are: reducing inventory levels (JIT, VMI),
|
||
shortening the receivables cycle (faster collection from customers), and
|
||
lengthening the payables cycle (slower payment to suppliers).
|
||
|
||
Large buyers — particularly major retailers and platform companies — use
|
||
their market power to extend payment terms to suppliers to 60, 90, or 120
|
||
days while collecting from customers within days. This transfers the
|
||
financing burden of working capital to the supply chain without reducing
|
||
the buyer's operational requirements. The result is an effective subsidy
|
||
from suppliers (often smaller and more capital-constrained) to buyers
|
||
(typically larger and better-capitalised).
|