Source-checked guides and practical tools

Server-energy calculator

Convert measured watts into kWh and electricity cost. Compare scenarios while keeping PUE and assumptions visible.

Document revision log

Build a CSV recording changes, effective dates and approval evidence. Start with a blank downloadable template.

Search comparison worksheet

Compare the same query across engines. Keep settings, result URLs, dates and your own useful-result observations together.

Crawler response CSV analyzer

Calculate HTTP 429 and error rates locally. Compare observation windows and download the aggregate summary.

Googlebot 429 responses: an App Engine rate-limit case study

A real verified-crawler throttling investigation with aggregate response counts, proxy-identity checks, a reproducible CSV and explicit observational limits.

Published 2026-10-23 · AI-assisted first-party analysis

AI Server Rack Power: Four DGX H100 Systems, kW and Monthly kWh

Calculate AI server rack power and monthly electricity with explicit system, IT and facility boundaries. Four NVIDIA DGX H100 systems have a combined published maximum system power of 40.8…

Math Self-Study Diagnostic: Six Worked Exercises Before Calculus

Use this informal math self-study diagnostic to identify specific algebra and trigonometry gaps. Start by trying the six original exercises below on paper, without looking at the worked…

What is ProFinda? Workforce planning, matching and buyer checks

ProFinda is a workforce and resource management platform. It helps organizations find people for work, plan capacity and allocate staff using information such as skills, availability and…

English · 2026-10-22

Tavily explained: search API, credits and reliable research workflows

Tavily provides search and web-content APIs for applications, including AI research workflows. It retrieves material that an application can inspect and cite. Retrieval can improve access…

English · 2026-10-22

What is VirusTotal? Results, upload privacy and private scanning

VirusTotal combines file, URL and related security information from multiple engines and analysis systems. It is useful for investigating suspicious material and comparing signals. A clean…

English · 2026-10-22

Missing chat history: checks for ChatGPT, Google Chat, WhatsApp and WeChat

A conversation missing from a sidebar is not necessarily deleted. First identify the service, account, workspace and device, then distinguish an archive or search problem from deletion or…

English · 2026-10-22

What does s mean in Java? %s, \s, \\s and (?s) explained

In Java, the meaning of s depends on context. It can be an ordinary variable name, the general formatting conversion %s , the string escape \s , or part of a regular expression. Java…

English · 2026-10-22

Unfiltered Search Engines: Privacy, Independent Indexes and SafeSearch

Compare DuckDuckGo, Brave Search, Mojeek, MetaGer, Bing and Google by result sources, privacy and SafeSearch. Independent indexes do not guarantee unbiased or unfiltered results.

English · 2026-10-23

Uncensored search engines: indexes, privacy and controls

No search engine can usefully promise complete, unbiased access to every page. If you want an alternative to Google, choose according to a specific need: another web index, a different…

English · 2026-10-23

Independent search indexes vs metasearch

An independent search index and a metasearch service solve different problems. An index supplies a collection of discovered pages; metasearch combines results from other services. Both…

English · 2026-10-23

Search privacy, SafeSearch and content policies

Private search and unfiltered search are not interchangeable promises. A service can limit tracking while still applying ranking, explicit-content controls and legal policies. For a…

English · 2026-10-23

Search engine market share in January 2025: data and limits

For January 2025 worldwide across desktop, mobile, tablet and console, Statcounter's exported search-engine market-share dataset lists Google at 89.78%, Bing at 3.94% and Yandex at…

English · 2026-10-23

20 Microsoft Word fonts compared: choosing, availability and embedding

The best font for a Word document depends on its purpose, audience and delivery format. There is no usage dataset behind the old “most commonly used” ranking on this page. This revision…

English · 2026-10-22

Document revision records: a practical template and control workflow

A document revision record explains what changed, when, why and under whose approval. It helps readers identify the effective version and trace a decision. It is not the same as an…

English · 2026-10-22

Critical thinking books: 12 verified titles and a practical reading plan

Choose a critical-thinking book for the skill you want to practice: analyzing arguments, evaluating numbers, reading difficult material or reasoning under uncertainty. This is a curated…

English · 2026-10-22

A self-study mathematics roadmap: prerequisites, branches and checkpoints

A useful mathematics roadmap is a dependency map, not a requirement to study every topic in one fixed order. Build algebra and functions first, then combine calculus, linear algebra and…

English · 2026-10-22

AI server vs ordinary server power: measured watts, maximums and energy cost

There is no universal multiplier for how much electricity an AI server uses compared with an ordinary server. Power depends on the exact hardware, workload, utilization and measurement…

English · 2026-10-22

Hipótesis hidrotermal del origen de la vida: evidencias, mecanismos y límites

La hipótesis hidrotermal propone que ciertos ambientes de interacción entre agua y roca pudieron favorecer etapas de la química anterior a la vida. No afirma que se haya demostrado el…

Español · 2026-10-22

MAE, MSE, RMSE et R² : formules, exemple calculé et Python

Comparez MAE, MSE, RMSE et R² avec quatre observations, deux séries de même MAE et un exemple Python exécuté. Interprétez les R² négatifs et les cibles constantes.

Français · 2026-10-23

Boot Ubuntu without a GUI: systemd and graphical recovery

On an Ubuntu installation that uses systemd, set multi-user.target as the default to request a non-graphical boot. Changing the default target affects later boots; switching targets…

English · 2026-10-23

SQL Server error 3930: XACT_STATE and the original error

SQL Server error 3930 means an operation tried to write or commit while the transaction was uncommittable. Find the earlier error that caused that state, capture its details and roll…

English · 2026-10-23

Forgejo with Docker: ports, storage and recovery

A reliable Forgejo setup needs a supported release, persistent data, the correct external URL and a tested recovery procedure. Start with a local-only instance before exposing a new…

English · 2026-10-23

CloudNativePG vs Zalando: architecture and restore checks

Choose a PostgreSQL operator by the operational workflow your team can run and recover, not an unsupported popularity score. CloudNativePG and Zalando Postgres Operator both manage…

English · 2026-10-23

Free Minecraft hosting in India: plans and practical checks

Players in India can investigate free Minecraft hosts, but a service being available to Indian users does not establish that its servers are physically in India or that it will have low…

English · 2026-10-23

Chinese email domains: QQ, NetEase, Sina and Sohu

QQ Mail, NetEase Mail, Sina Mail and Sohu Mail are identifiable Chinese email services. Their official sign-in sites help establish which service you are visiting. They do not establish a…

English · 2026-10-23

OpenSSL unexpected EOF: diagnose error 0A000126 safely

error:0A000126:SSL routines::unexpected eof while reading indicates that OpenSSL encountered an unexpected transport EOF while it was expecting TLS data or a proper TLS shutdown. It does…

English · 2026-10-23

Proxmox remote access: ports, private management and VM services

Proxmox VE's web interface uses HTTPS on TCP port 8006. That identifies a service; it does not mean every installation must forward 8006 from the public internet. Decide separately how…

English · 2026-10-23

Intune Autopilot group tags: the correct dynamic device rule

For registered Windows Autopilot devices, Intune's group tag maps to the Microsoft Entra device's OrderID value in devicePhysicalIds . Use that documented mapping in an Entra dynamic…

English · 2026-10-23

كيف يساعدك Ithy؟ أسئلة واضحة ومصادر يمكن مراجعتها

يساعدك Ithy في إعداد إجابات بحثية بمساعدة الذكاء الاصطناعي، مع روابط إلى المصادر وإمكانية قراءة وجهات نظر النماذج في البحث المتعمق. للاستفادة منه، حدّد المهمة والسياق واللغة المطلوبة، ثم…

العربية · 2026-10-23

Ithy.com review: identity, research limits and billing

Ithy.com is a web research service that produces AI-assisted answers with linked sources. Before choosing a service, check its exact domain, current offer, account controls and evidence.…

English · 2026-10-23

How Ithy works: Fast Research, Deep Research and saved answers

Ithy turns a research question into an AI-assisted answer with source links. Fast Research uses one answer writer; Deep Research retains separate model perspectives and combines the…

English · 2026-10-23

Que signifie Ithy ? Le service ithy.com et les homonymes

Sur ithy.com, Ithy désigne un service de recherche assistée par intelligence artificielle. Il permet de poser une question, de consulter une réponse avec des sources et, en recherche…

Français · 2026-10-23

Ithy Pro pricing: monthly, annual and existing memberships

The current public Ithy Pro offer is US$20 billed monthly or US$120 billed annually, as checked on October 23, 2026. The annual price is equivalent to US$10 per month when divided over…

English · 2026-10-23

Utiliser Ithy en français et vérifier les réponses

Ithy est un service de recherche assistée par IA qui peut répondre à une question rédigée en français. Pour obtenir un résultat exploitable, précisez votre objectif, le contexte et les…

Français · 2026-10-23

استخدام Ithy بالعربية: الفصحى واللهجات والترجمة والتحقق

يمكنك طرح سؤال بالعربية وطلب إجابة عربية من Ithy. جودة الفهم والصياغة قد تختلف باختلاف اللهجة والسياق والمصدر، لذلك من المفيد تحديد المعنى والجمهور والأسلوب المطلوب. هذه إرشادات عملية…

العربية · 2026-10-23

ما مجال تخصص Ithy؟ مهام البحث وحدود المساعدة

يتخصص Ithy بوصفه منتجاً في المساعدة على البحث وشرح المعلومات وتجميعها في إجابة ذات مصادر. يمكن استخدامه لأسئلة في مجالات مختلفة، لكن هذا لا يجعله صاحب مؤهل مهني في كل مجال ولا يمنحه قدرة…

العربية · 2026-10-23

قراءة إجابة Ithy: المصادر ووجهات النظر والرسوم والحفظ

تعرض إجابة Ithy نتيجة بحث بمساعدة الذكاء الاصطناعي، وقد تتضمن مصادر ووسائط ووجهات نظر منفصلة. لفهم ما تدعمه فعلاً، اقرأ المقال والمراجع والسياق، ولا تعتمد على شكل العرض وحده. هذا دليل من…

العربية · 2026-10-23

استخدام Ithy على iPhone: الموقع الرسمي والإضافة إلى الشاشة الرئيسية

يمكنك استخدام Ithy على iPhone من خلال الموقع الرسمي ithy.com في المتصفح. ويمكن إضافة الموقع إلى الشاشة الرئيسية عندما يتيح الجهاز ذلك. هذه طريقة للوصول إلى تطبيق الويب، ولا تتطلب تنزيل ملف…

العربية · 2026-10-22

Use Ithy on Android: official website, installation and saved research

You can use Ithy on Android by opening ithy.com in your browser. When the browser offers installation or a home-screen shortcut, that provides convenient access to the same web service. No…

English · 2026-10-22