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# catatan teknis, sejak 2001

Trading Lab · Control Room: bikin trading DeFi yang benar-benar bisa dibuktikan

Saya sempat masuk rabbit hole: gimana caranya bikin infrastruktur trading on-chain (DeFi) yang benar-benar bisa dipercaya? Jawabannya jadi satu portfolio bernama Trading Lab · Control Room , yaitu enam blok kecil yang masing-masing menyelesaikan satu masalah nyata di trading DeFi, lalu disatukan jadi satu ruang bukti yang bisa kamu buka di browser dan putar ulang sendiri. Tanpa wallet, tanpa uang beneran, cuma skenario terekam yang bisa kamu periksa langkah demi langkah. Lima engine, plus lab yang menyatukan semuanya: RFQ Quote & Risk Engine : kasih quote bid/ask, pantau inventory dan exposure, dan tetap selamat saat crash tanpa kehilangan fill atau menghitung ganda (core C++20, SQLite journaling). DEX Execution Simulator : pilih rute swap berdasar hasil bersih setelah gas, bukan angka kotor terbesar. Di satu kasus rute langsung menang (96.8 vs 95.3 USD) walau rute 2-hop terlihat lebih besar di atas kertas. Chain State Replay : jaga state pool DEX tetap benar saat RPC ...

The machine that can copy anything

2005-06-07 · #Kliping #Sains



By Simon Hooper for CNN
Thursday, June 2, 2005 Posted: 10:48 AM EDT (1448 GMT)

LONDON, England (CNN) -- A revolutionary machine that can copy itself and manufacture everyday objects quickly and cheaply could transform industry in the developing world, according to its creator.

The "self-replicating rapid prototyper," or "RepRap" is the brainchild of Dr. Adrian Bowyer, a senior lecturer in mechanical engineering at the University of Bath in the UK.

It is based on rapid prototyping technology commonly used to manufacturer plastic components in industry from computer-generated blueprints -- effectively a form of 3D printer.

But Bowyer told CNN the RepRap's ability to copy itself could put rapid prototyping technology within reach of the world's poorest communities by alleviating the need for the sort of large-scale industrial infrastructure common across the developed world.

"People can start manufacturing goods at a low price," said Bowyer. "All one needs is a computer and a machine that can copy itself. It can spread without enormous expenditure of capital and where labor costs are low.

[more on CNN]

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