IT lists

CoilCell is a compact PCB coil module by microbots, featuring TI’s DRV8837 H-Bridge driver. It allows easy control of magnetic polarity and strength from Arduino, enabling applications like bouncing magnets, generating vibration or sound, and Flip-Dot displays. Available in 1W and 2.5W versions; beware of heat and flying magnets.

 The EMS Synthi 100, introduced in 1971, was a massive modular synthesizer built in very limited numbers—only around 30 units, mainly for universities and broadcasting studios. Its most distinctive feature is the matrix patchboard , which replaces long patch cables with small pins, allowing connections to be made by simply aligning coordinates. The system includes 12 VCOs (oscillators), 8 VCFs (filters), 8 VCAs, and two linear sequencers, making it possible to build extremely complex modulations and layered sound structures. This made it a key instrument at the BBC Radiophonic Workshop and among experimental composers. Technically, it uses voltage-controlled architecture, meaning pitch, volume, and filter parameters are all governed by control voltages—a pinnacle of analog synthesis design at the time. Today, original hardware units are virtually unobtainable, but parts of the Synthi 100 can be emulated in software. Plugins such as Arturia Synthi V or iVCS3 recreate the EMS-style...

Auto-Execution / Bootstrap Points — Cross-Platform List Auto-Execution / Bootstrap Points — Cross-Platform List MS-DOS: Startup batch — AUTOEXEC.BAT / CONFIG.SYS Apple II (ProDOS): Auto-start program — STARTUP AmigaOS: Boot sequence — S:Startup-Sequence / S:User-Startup Atari TOS: Auto-exec folder — AUTO folder (e.g., *.PRG ) PC / BIOS: First-stage boot → loader — MBR → GRUB / LILO / Syslinux PC / UEFI: NVRAM boot order / shell — BootOrder / startup.nsh Bootloader (general): Hand-off to OS — GRUB / Windows Boot Manager / extlinux.conf Embedded SoC: ROM → first-stage loader — Boot ROM → FSBL (e.g., U-Boot SPL ) U-Boot: Environment-driven boot — bootcmd / boot.scr / extlinux.conf UNIX SysV: Runlevels / rc — /etc/inittab / /etc/rc*.d/ BSD family: rc scripts — /etc/rc / rc.conf / rc.d Linux (systemd): Declarative services — unit/target; rc-local.service (compat) macOS: launchd ...

Onmyoji (Manga ↔ Novel) Cross-Reference Onmyoji — Manga vs. Original Novel Cross-Reference English translation of your list, with links to the relevant novel volumes where applicable. Manga Vol. Manga Episode(s) Novel Volume (link) Corresponding Story / Notes 1 “Genjō, the Tang biwa, stolen by a demon” ( 玄象といふ琵琶 鬼のために盗らるること ) “The Woman of Gardenia” ( 梔子の女 ) Onmyōji (Bunko vol. 1) Both episodes adapt short stories from vol. 1. 2 “The Demon’s Road” ( 鬼のみちゆき ) “Amanojaku” ( 天邪鬼 ) Onmyōji (Bunko vol. 1) Onmyōji: Hiten no Maki First episode from vol. 1; second from Hiten no Maki . 3 “The Master of the Black River” ( 黒川主 ) “Oni-harai (Demon-banishing rite)” ( 鬼やらい ) ...

Open Source Licenses — Links & One-Line Notes Open Source Licenses — Reference Links & One-Line Notes Permissive MIT License — Ultra-simple: notice and disclaimer only. BSD-2-Clause — MIT-like; no advertising clause. BSD-3-Clause — Adds a “no-endorsement” clause. 0BSD — PD-like; even attribution not required. ISC License — Modernized MIT; very short text. Apache License 2.0 — Patent grant + retaliation; business-friendly. Boost Software License 1.0 — Very permissive; popular for header-only libs. The Unlicense — Public-domain dedication; sometimes avoided in enterprises. zlib License — Minimal terms incl. no misrepresentation. libpng License — zlib-style; bans false origin claims. NCSA/University of Illinois — MIT/BSD-like university license. PostgreSQL License — MIT/BSD-equivalent; easy for commercial reuse. OpenSSL (3.0+) — Since 3.0, Apache-2.0; older were dual-licensed. ICU License — MIT/BSD-like permissive...

Browser-Based 8-bit / NES-Style Tools — Quick List Browser-Based 8-bit / NES-Style Tools — Quick List Tip: For composing, start with BeepBox or JummBox . For one-shot sound effects, try ChipTone . Composition / Trackers BeepBox — ultra-simple; share songs via URL. JummBox — enhanced BeepBox fork with more features. ModBox — even more advanced fork for power users. SoundBox — lightweight tracker; can export WAV. Bosca Ceoil (Web) — web remake; original project is archived. Sound Effect Generators (SFX) ChipTone — browser-based SFX generator for games. Bfxr — extended version of the classic Sfxr. jsfxr / jfxr — web implementations of Sfxr. Reference: C64-Style (not NES but 8-bit vibe) WebSID — in-browser emulator of the C64 SID sound chip.

Games You Can Build with Pixi.js Games You Can Build with Pixi.js 1. Classic Arcade Breakout — Easy to implement with rectangular sprites and basic collision. Galaga-style Shooter — Sprite sheets make enemies and bullets manageable. 2. Character Animation 2D Side-Scrolling Action (Mario-like) — Load a tilemap; control the character with sprite animations. Belt-Scroll Beat ’em Up (Final Fight-like) — Layer management and sprite animations create a sense of depth. 3. Particle-Driven Fireworks Simulation — Use ParticleContainer for lightweight particle rendering. Bullet Hell Shooter — Efficiently handles hundreds of bullets. 4. Puzzle & Casual Match-3 Puzzle (Candy Crush-like) — Combine sprites with a grid controller. Sliding / 15-Puzzle — Touch and mouse input are straightforward to support. 5. Expression-Focused ...

IT Postmortem Resources – Curated List IT Postmortem Resources – Curated List Postmortem Case Archives GitHub: danluu/post-mortems Wide collection categorized by themes (config errors, hardware/power, DB, etc.). GitHub: awesome-tech-postmortems Curation of tech postmortems (Cloudflare, GitLab, Honeycomb, Azure DevOps, and more). GitHub: icco/postmortems Annotated list with metadata; supports summaries/JSON exports. Company Postmortem Examples (via PagerDuty) PagerDuty – Postmortem Examples Stripe LastPass AWS Twilio Heroku Netflix GOV.UK (Rail incident investigations, etc.) Templates & Guides PagerDuty – Postmortem Template Includes ...

NetHack Full Logic Port to JS/TS — Checklist NetHack Full Logic Port to JS/TS — Checklist (English) 0. Core Choices Target Version: NetHack 3.7 (trunk) — fewer legacy #ifdef s and the latest fixes. Language: TypeScript (strict) — maps C structs to interfaces with strong typing and IDE support. License: Keep the NetHack General Public License (NGPL); include LICENSE and source when publishing. 1. Repository Skeleton /core ← TypeScript game engine /dungeon ← generation & topology /actors ← monsters, player /items ← objects & inventory rules /rules ← combat, magic, conducts /tests ← Jest golden-file tests /ui-c ← original C "window port" or BrowserHack WASM /scripts ← build helpers & code-gen scripts Keep the original C sources under /ui-c/ ; remove a C file only after its TS equivalent passes tests. 2. Automated Safety Net...

Crisis Early-Warning Matrix (Schools × Countries) Crisis Early-Warning Matrix Vertical: School / Horizontal: Country  |  As of 2025-08-12 (JST) 🟢 Low 🟡 Caution 🟠 Watch 🔴 Severe School ▼ / Country ▶ 🇺🇸 US 🇯🇵 Japan 🇨🇳 China 🇩🇪 Germany 🇫🇷 France 🇮🇹 Italy 🇬🇧 UK 🇨🇦 Canada 🇦🇺 Australia 🇰🇷 Korea Classical / Neoclassical 🟡 🟡 🟡 🟡 🟡 🟡 🟡 🟡 🟡 🟡 What to watch: Relative-price distortions, TFP, tariffs, energy/transport supply shocks. Keynesian 🟠 🟡 🔴 🟡 🟠 🟡 🟠 🟠 🟡 🟡 What to watch: Employment, orders, inventories vs. demand gap, household saving rate, capex plans. New Keynesian 🟡 🟠 🟠 🟢 🟢 🟡 ...

What Is a Roguelike? — History, Notable Works, and a NetHack Glossary What Is a “Roguelike”? Definition History Representative Works NetHack Glossary Quick primer you can reuse as an article or handout. Definition A roguelike is a turn-based, grid-movement RPG featuring procedural levels and permadeath . A commonly cited yardstick is the 2008 “Berlin Interpretation,” which lists high-value traits such as procedural generation, permadeath, turn-based play, grid movement, resource management, and emergent gameplay. In modern usage, roguelites are action-forward games that adopt some—but not all—of these traits. History (Very Short Timeline) 1978 — Beneath Apple Manor seeds the formula on the Apple II. 1980 — Rogue popularizes permadeath + procedural dungeons on BSD Unix. 1983 — Moria deepens the template. 1984–85 — Ha...

Symbolism / Aestheticism / Decadentism — Quick Reference Symbolism · Aestheticism · Decadentism — Quick Reference Representative works list both Western and Japanese examples. Japanese titles include standard English renderings with romaji in parentheses when helpful. Movement Representative works (West / Japan) Core themes Keywords Symbolism West: Charles Baudelaire, The Flowers of Evil ( Les Fleurs du mal ); Arthur Rimbaud, A Season in Hell / Illuminations ; Stéphane Mallarmé, A Throw of the Dice Never Will Abolish Chance ( Un coup de dés... ) Japan: Kitahara Hakushū, Jashūmon (邪宗門); Miki Rofū, Haien (廃園, “The Ruined Garden”); Kambara Ariake, Dokugen Aika (独絃哀歌, “Elegy on a Single String”) Suggestion and association over direct statement Inner life, dream, the ...

Fantasy Political Science: The Lord of the Rings / Narnia / Earthsea Fantasy Political Science: Comparing The Lord of the Rings , The Chronicles of Narnia , and Earthsea Three lenses: the nature of power, legitimacy, and institutional design. Key takeaways (one-liners) The Lord of the Rings: Power is temptation — authority readily corrupts; rulers must practice restraint and legitimate succession (monarchy + local self-rule). Narnia: Sovereignty is grace — legitimacy is conferred by transcendent authority (Aslan) → a theocratic monarchy. Earthsea: Governance is balance — true names bind knowledge to responsibility (decentralization + governance by knowledge, later reforms). Comparison matrix (3 political lenses × major topics) Aspect The Lord of the Rings (Tolkien) The Chronicles of Narnia (Lewis) Earthsea (Le Guin) ...

Sample & Reference Links – Tech Art Series Sample / Reference Links Curated references for the proposed video ideas. Some topics are niche; where direct samples are scarce, suggested search paths are provided. Waveform-Driven Grid Patterns p5.js Coding Tutorial – Wave Pattern (YouTube) Generative Irregular Grid – process & ideas (Medium) Perfect Tile Rendering for Retro Games Auto-Tiling Basics – Shader Graph walkthrough (YouTube) Tiles and Tilemaps Overview (MDN) Drawing Pixel-Perfect Curves in p5.js Custom Shapes & Smooth Curves – p5.js Official Tutorial L-System Patterns with p5.js Fractal Trees (L-System) – The Coding Train L-system Trial Code with p5.js (JP) – Deconbatch Retro Game Visuals in WebGL (2025 Edition) WebGL Tutorial – Getting started to shaders (MDN) Subpixel Rendering Secrets for Crisp Graphics Subpixel Rendering – background & techniques (Wikipedia) Scanline Magic – Old-School Display Eff...

20 Three.js Particle Examples — Source-Ready List 20 Three.js Particle Examples English translation of the requested list. (Add your own source links as needed.) Hundreds of thousands of particles with BufferGeometry ( PointsMaterial ) — control position/color via attributes. Sprite particles (snow) — basics of textured Sprite / Points . Sine‑wave particles — undulating via a vertex shader. Billboard particles — quads that always face the camera. Interactive particles — respond to a field via mouse input. Raycast selection for Points — detect clicks on point clouds. Custom attributes × Points — size/color etc. via vertex attributes. Dynamic particles + post‑processing — combine with bloom and other effects. GPGPU flocking (boids) — update thousands of agents on the GPU. GPGPU + glTF mesh swarms — make 3D models school/swarm. GPGPU proto‑planet (debris particles) — reaction...

Control Engineering in 10 Hours — Scilab/Xcos: Lead-ins (English) Conversion Hooks (Lead-ins) From the “Control Engineering in 10 Hours (Scilab/Xcos)” draft — English translation of the lists. A. Starter Books — build the core theory Feedback Systems (Åström & Murray) — freely available online; outstanding, intuitive figures. Control Engineering (Morikita Publishing, JP) — the “NOTE” sidebars carefully cover common beginner roadblocks. (Supplement) Classic Ogata references and curated lecture-note collections are good companions. B. Software Documentation — free, official resources Xcos official tutorial (Japanese PDF available) and the “Tutorials” page. “Introduction to Control Systems in Scilab” (CACSD primer PDF). Scilab Online Help — CACSD section with function guides (e.g., bode , evans ). ATOMS — GUI for managing additional toolboxes. C. Experiment Kits — three budget tiers Low budget: DC motor ...

Works Featuring “Itano Circus” Late 1970s–1980s Years Title Notes 1979–80 Mobile Suit Gundam (TV) Early proto-Itano three-dimensional mecha action; Elmeth’s remote “bits” and missile swarms. 1980 Space Runaway Ideon Swirling-contrail “natto missile” barrages that foreshadow the style. 1982–83 The Super Dimension Fortress Macross (TV) Defining dogfights and dense missile-swarm cuts; becomes a franchise hallmark. 1984 Macross: Do You Remember Love? (Film) Theatrical showcase of Itano Circus aesthetics. 1994 Macross Plus (OVA / Film) YF-21 vs. Ghost X-9 with the famed “legendary five seconds” sequence. Later Works & Influence Neon Genesis Evangelion : Multiple homage-like missile-swarm/dogfight shots. Cowboy Bebop: The Movi...

Reports/Memoirs from the Perpetrator Side of Hypnosis & Brainwashing Reports/Memoirs from the Perpetrator Side of Hypnosis & Brainwashing Key Cases & Sources Focused on the “Operator” Perspective Jules Liégeois & the Nancy School (19th‑century France) Jurist-psychologist Jules Liégeois explored “experimental crimes” under hypnosis, showing how a subject could be led to carry out acts against their will. His writings explicitly warn about the potential misuse of hypnotic suggestion—an early, clear look at the mindset and methods of the operator . The Palle Hardrup Case (1951, Denmark) Bank-robber-turned-killer Palle Hardrup claimed he was hypnotized by a friend who manipulated him into committing the crime. While much coverage centers on the victim’s perspective, documentaries and interviews around the case illuminate the perpetrator/operator side as well. George H. E...

  Findings on Toshio Suzuki’s Involvement in Char’s Counterattack Involvement in Production Although Toshio Suzuki’s name does not appear in the film’s official production credits, reports indicate he supported Yoshiyuki Tomino during planning. According to accounts, Suzuki—then editor-in-chief of Animage —was consulted by Tomino, pledged support regardless of details, and backed the novel serialization in the magazine. At release, when box office exceeded expectations yet distributors downplayed Tomino’s contribution as “because it’s Gundam,” Suzuki—who happened to be present—consoled Tomino by saying, “As a thought experiment of making a completely different work under the name ‘Gundam,’ it succeeded, didn’t it?” This episode suggests Suzuki encouraged Tomino off the record. There is, however, no evidence in the materials that he directly influenced the title decision or participated in scriptwriting. Statements, Interviews, and Dialogues Suzuki appeared with Tomino and othe...

  Official RFCs (IETF standards) that mention Blockchain RFC 9518 – Centralization, Decentralization, and the Internet Mentions decentralized consensus technologies (such as blockchain) as a countermeasure to centralization, but only in a general, conceptual way. ( datatracker.ietf.org ) IETF Internet-Drafts (work-in-progress) related to Blockchain These are not yet standardized as RFCs but remain active or expired drafts. draft-tu-nmrg-blockchain-trusted-protocol-04 Defines a blockchain-based trust protocol for future 6G intelligent communication networks. ( datatracker.ietf.org ) draft-hardjono-blockchain-interop-arch-03 Proposes an architecture for interoperability between different DLT (Distributed Ledger Technology) networks, focusing on DLT gateways for asset and data exchange. ( datatracker.ietf.org ) draft-paillisse-sidrops-blockchain-02 Analyzes the use of blockchain to manage IP address allocation, delegation, and binding. Mentions Proof of Stake as a...

  What it is. IPX = Novell’s network-layer protocol (from XNS IDP); SPX = its connection-oriented transport (from XNS SPP). Popular with NetWare in the late ’80s–’90s, then eclipsed by TCP/IP. Wikipedia +1 Addressing. network(32-bit) : node(48-bit MAC) : socket(16-bit) → 12-byte address per endpoint. Network range 0x00000001–0xFFFFFFFE; 0x00000000 = “this network.” The 32+48-bit pair forms an 80-bit node ID; the socket selects the application. Wikipedia Packet header (30 bytes). Fields: checksum (usually 0xFFFF = none), total length, Transport Control (hop count), Packet Type , then Destination and Source (each = network+node+socket). Key types: 1=RIP, 5=SPX, 17=NCP. Wikipedia Novell IETF Datatracker Discovery & routing. • RIP (IPX flavor) advertises routes (primarily by delay , hop count secondary). • SAP advertises services (file/print servers, etc.). • NLSP (IS-IS–based) scales better on larger nets. Wikipedia Novell +1 Over Ethernet (encapsulation...