Hitachi Tool dropped Lean and let one bottleneck set the clock
A Japanese toolmaker that repeatedly failed with Lean turned to Theory of Constraints, syncing the whole plant to its one bottleneck.
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公開済みの事例
3,236 公開済みの事例 · 随時更新ECN marks packets instead of dropping them to signal congestion
ECN sets a bit rather than dropping a packet, so the sender slows down without paying for a costly retransmission.
事例を読むBackblaze stored 17 data shards plus 3 parity to cut redundancy cost
Backblaze splits a file into 17 shards plus 3 parity, so any 17 of 20 rebuild it - durability at about 18% overhead, not 200%.
事例を読むAir Water cooled harvested produce in ~1 hour on liquid nitrogen
A portable liquid-nitrogen unit chills produce at harvest in ~1 hour instead of the ~8 hours a mechanical fridge takes.
事例を読むMQTT won IoT messaging by keeping the broker protocol tiny and loss-tolerant
An OASIS-standard publish/subscribe messaging transport with small headers and three QoS levels, built for small devices on flaky links.
事例を読むMatter got Apple, Google, Amazon and Samsung to speak one smart-home language
Matter is an open, IP-based application layer all the major platforms agreed to, so a certified device works across ecosystems.
事例を読むCIDR swapped fixed address classes for prefix lengths so the net could scale
CIDR replaced rigid Class A/B/C blocks with variable-length prefixes, allowing exact sizing and route aggregation.
事例を読むSBA guarantees loans instead of making them, so banks do the lending
The SBA does not lend; it guarantees a share of a private bank loan, letting banks underwrite and the taxpayer share the risk.
事例を読むGross Insurance turned Uzum's shopping bags into reflective safety gear
An insurer and a marketplace replaced their delivery bags with reflective ones, making pedestrians visible at night and reversing the insurer's losses.
事例を読むKarangahape made street receipts the currency of its own loyalty scheme
An empty shop on Auckland's K Road turned receipts from any nearby business into spendable money, becoming the world's first neighbourhood loyalty programme.
事例を読むJupiter turned empty billboards into foil ads at 10% of the normal cost
Uruguay's Jupiter bought unused billboard inventory for a tenth of the price and wrapped it in actual aluminium foil, so the medium itself became the product.
事例を読むAltaVista found near-duplicate pages by sketching their Jaccard resemblance
Broder's 1997 MinHash sketch estimated the Jaccard similarity of huge pages via a few minimum hashes, so AltaVista clustered near-duplicates cheaply.
事例を読むMerkle's hash tree proves one record is in a giant file with a handful of hashes
Ralph Merkle's 1979 hash tree commits to a whole dataset in one root so any single record is verified with only ~log n hashes, not the file.
事例を読むKademlia made any peer reachable in few hops by routing on the XOR distance
Maymounkov and Mazières' 2002 Kademlia treated XOR of node IDs as a distance, so a node finds any peer in O(log n) hops and gossips found nodes.
事例を読むBurrows and Wheeler re-sorted a block's rotations to make it compress far better
Burrows and Wheeler's 1994 transform sorted a block's rotations into an order that clusters equal characters, letting bzip2 beat older compressors.
事例を読むIBM's Apriori mined what shoppers buy together by pruning impossible candidates
Agrawal and Srikant's 1994 Apriori algorithm found frequent item-sets in huge transaction logs by using a subset rule to prune candidates early.
事例を読むUniqlo's SPA model owned the chain from design to store and made basics cheap
Uniqlo cut out wholesalers, designed its own clothes and linked stores to HQ online, so it sold quality basics cheaply.
事例を読むQualcomm's satellite system tracked every truck and messaged the driver
In 1988 Qualcomm put two-way messaging and vehicle position on long-haul trucks, so dispatchers knew where each load was and the fleet finally ran on live data.
事例を読むOrlicky's MRP turned a production plan into timed component orders
In 1964 Orlicky's material requirements planning read a finished-goods plan and exploded it, via the bill of materials, into exactly when to buy each part.
事例を読むSuppliers deliver parts in assembly order to the line, so each batch fits one car
Rather than just-in-time, just-in-sequence delivers parts already sorted in build order, so a worker pulls exactly the part for the car in front of them.
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