https://yusuf-gadelrab.github.io/guides.html Long-form guides on trading risk, AI tooling, freight brokerage, security and the student career stack. Every formula shown. en-us Wed, 29 Jul 2026 00:00:00 +0000 tools/build_feeds.py https://www.rssboard.org/rss-specification 1440 Copyright 2026 Yusuf Gadelrab https://yusuf-gadelrab.github.io/guides/linkedin-profile-recruiters.html https://yusuf-gadelrab.github.io/guides/linkedin-profile-recruiters.html Wed, 29 Jul 2026 00:00:00 +0000 How recruiters actually search LinkedIn, what belongs in the headline and About, why the first two lines decide everything, and what costs replies. https://yusuf-gadelrab.github.io/guides/stop-loss-placement.html https://yusuf-gadelrab.github.io/guides/stop-loss-placement.html Wed, 29 Jul 2026 00:00:00 +0000 Structure-based, ATR-based, or percentage stops. Why the stop sets position size rather than the other way round, and the places never to put one. https://yusuf-gadelrab.github.io/guides/clothing-brand-pod-margins.html https://yusuf-gadelrab.github.io/guides/clothing-brand-pod-margins.html Wed, 29 Jul 2026 00:00:00 +0000 Blank cost, print cost and platform cut separated, a $32 tee and a $58 hoodie worked end to end, plus shipping, returns and the pre-order break-even. https://yusuf-gadelrab.github.io/guides/static-site-ai-search.html https://yusuf-gadelrab.github.io/guides/static-site-ai-search.html Wed, 29 Jul 2026 00:00:00 +0000 llms.txt, robots.txt rules for named AI crawlers, JSON-LD entity graphs with @id, mirrored FAQ schema, and what an answer engine cannot see in an SPA. https://yusuf-gadelrab.github.io/guides/ats-resume.html https://yusuf-gadelrab.github.io/guides/ats-resume.html Wed, 29 Jul 2026 00:00:00 +0000 What applicant tracking systems really do to a resume, the formatting rules that matter, how to mirror a job description honestly, and the myths. https://yusuf-gadelrab.github.io/guides/volume-profile.html https://yusuf-gadelrab.github.io/guides/volume-profile.html Wed, 29 Jul 2026 00:00:00 +0000 How volume profile differs from a volume-by-time histogram, what POC and the value area mean, how to read volume nodes, and how it pairs with anchored VWAP. https://yusuf-gadelrab.github.io/guides/carrier-vetting-checklist.html https://yusuf-gadelrab.github.io/guides/carrier-vetting-checklist.html Wed, 29 Jul 2026 00:00:00 +0000 How to verify FMCSA authority, read a certificate of insurance, spot double-brokering, and build a vetting file that survives a cargo claim. https://yusuf-gadelrab.github.io/guides/options-vertical-spreads.html https://yusuf-gadelrab.github.io/guides/options-vertical-spreads.html Wed, 29 Jul 2026 00:00:00 +0000 The four verticals, max profit and max loss formulas with worked dollar examples, buying power reduction, break-even win rates, and assignment risk. https://yusuf-gadelrab.github.io/guides/verify-visa-sponsorship-internships.html https://yusuf-gadelrab.github.io/guides/verify-visa-sponsorship-internships.html Wed, 29 Jul 2026 00:00:00 +0000 A repeatable method for verifying visa sponsorship yourself: req language, H-1B and LCA disclosure data, careers-page patterns, and what none of it proves. https://yusuf-gadelrab.github.io/guides/vcp-base-patterns.html https://yusuf-gadelrab.github.io/guides/vcp-base-patterns.html Wed, 29 Jul 2026 00:00:00 +0000 What a base is, how contractions are counted, why volume dry-up matters, where the pivot sits, and the walk-forward result that came out breakeven. https://yusuf-gadelrab.github.io/guides/ffmpeg-auto-editing.html https://yusuf-gadelrab.github.io/guides/ffmpeg-auto-editing.html Wed, 29 Jul 2026 00:00:00 +0000 Scene-change detection, audio-energy highlights, lossless cutting and concatenation, 9:16 vertical conversion, and why a local pipeline beats a cloud API. https://yusuf-gadelrab.github.io/guides/coding-interview-patterns.html https://yusuf-gadelrab.github.io/guides/coding-interview-patterns.html Wed, 29 Jul 2026 00:00:00 +0000 The pattern-based approach to technical interviews: the ten recurring problem patterns, why tracking the pattern you fail beats counting, and spaced repetition. https://yusuf-gadelrab.github.io/guides/client-side-only-tools.html https://yusuf-gadelrab.github.io/guides/client-side-only-tools.html Wed, 29 Jul 2026 00:00:00 +0000 No account means no breach surface. What you gain from browser-only tools, what you give up in sync and compute, what it costs to run, and how to say so. https://yusuf-gadelrab.github.io/guides/quant-internship-timeline.html https://yusuf-gadelrab.github.io/guides/quant-internship-timeline.html Wed, 29 Jul 2026 00:00:00 +0000 When quant internships actually open by firm type, rolling versus hard deadlines, how OAs and superdays sequence, and why most circulating deadlines are wrong. https://yusuf-gadelrab.github.io/guides/technical-interview-study-system.html https://yusuf-gadelrab.github.io/guides/technical-interview-study-system.html Wed, 29 Jul 2026 00:00:00 +0000 The study system, not the problem list: Leitner spaced repetition, how to review a solved problem, timeboxing, and a hint ladder for when you are stuck. https://yusuf-gadelrab.github.io/guides/weight-tracking-signal-vs-noise.html https://yusuf-gadelrab.github.io/guides/weight-tracking-signal-vs-noise.html Wed, 29 Jul 2026 00:00:00 +0000 Why a daily weigh-in is mostly noise, how big that noise actually is, what a moving average recovers, and how long to wait before a trend means anything. https://yusuf-gadelrab.github.io/guides/pricing-a-digital-product.html https://yusuf-gadelrab.github.io/guides/pricing-a-digital-product.html Wed, 29 Jul 2026 00:00:00 +0000 Platform take-home compared on the same list price, VAT and merchant of record, tier design, refund assumptions, and the break-even unit math. https://yusuf-gadelrab.github.io/guides/print-on-demand-economics.html https://yusuf-gadelrab.github.io/guides/print-on-demand-economics.html Wed, 29 Jul 2026 00:00:00 +0000 Base cost, retail, platform fees, and net per unit on a tee and a hoodie — plus the costs people forget: returns, samples, artwork time, and ads. https://yusuf-gadelrab.github.io/guides/detention-demurrage-accessorials.html https://yusuf-gadelrab.github.io/guides/detention-demurrage-accessorials.html Wed, 29 Jul 2026 00:00:00 +0000 What each charge is, who owes it, how to document time in and out so a claim survives, and how unbilled accessorials eat a load's margin. https://yusuf-gadelrab.github.io/guides/swe-internship-international-student.html https://yusuf-gadelrab.github.io/guides/swe-internship-international-student.html Wed, 29 Jul 2026 00:00:00 +0000 How international students should run a SWE internship search: the timeline, the sponsorship question, who to target, and how work authorization fits. https://yusuf-gadelrab.github.io/guides/paper-to-live-trading.html https://yusuf-gadelrab.github.io/guides/paper-to-live-trading.html Wed, 29 Jul 2026 00:00:00 +0000 What paper does not simulate: slippage, partial fills, borrow, emotion. Why a promotion gate matters, and the 60-trade rule my engine enforces in code. https://yusuf-gadelrab.github.io/guides/technical-portfolio-8-seconds.html https://yusuf-gadelrab.github.io/guides/technical-portfolio-8-seconds.html Wed, 29 Jul 2026 00:00:00 +0000 What recruiters and applicant tracking systems actually parse, why three projects beat ten, quantified outcomes, README as landing page, and the live-demo rule. https://yusuf-gadelrab.github.io/guides/drawdown-recovery-math.html https://yusuf-gadelrab.github.io/guides/drawdown-recovery-math.html Wed, 29 Jul 2026 00:00:00 +0000 The recovery formula, a full table from 5% to 90%, losing-streak probabilities, risk of ruin, and how a drawdown budget sets your position size. https://yusuf-gadelrab.github.io/guides/snyk-vs-trivy-vs-dira.html https://yusuf-gadelrab.github.io/guides/snyk-vs-trivy-vs-dira.html Wed, 29 Jul 2026 00:00:00 +0000 An honest matrix across three security scanners, written by the author of one of them: coverage, container scanning, licensing, cost, and where each one loses. https://yusuf-gadelrab.github.io/guides/portfolio-that-gets-interviews.html https://yusuf-gadelrab.github.io/guides/portfolio-that-gets-interviews.html Wed, 29 Jul 2026 00:00:00 +0000 What a student software portfolio needs: a live URL, a README that pitches, three strong projects instead of ten weak ones, and case studies reviewers finish. https://yusuf-gadelrab.github.io/guides/local-llm-ollama.html https://yusuf-gadelrab.github.io/guides/local-llm-ollama.html Wed, 29 Jul 2026 00:00:00 +0000 Running a local LLM with Ollama: picking a model for your RAM, the HTTP API, quantisation, context limits, and when local beats a cloud API. https://yusuf-gadelrab.github.io/guides/reading-a-backtest-report.html https://yusuf-gadelrab.github.io/guides/reading-a-backtest-report.html Wed, 29 Jul 2026 00:00:00 +0000 Stat by stat: what win rate, profit factor, Sharpe, max drawdown and CAGR hide, with worked confidence intervals and cost maths. https://yusuf-gadelrab.github.io/guides/reading-a-scientific-paper.html https://yusuf-gadelrab.github.io/guides/reading-a-scientific-paper.html Wed, 29 Jul 2026 00:00:00 +0000 The order to read sections in, how to judge a sample size, what p-values and effect sizes actually mean, and how to spot a claim the data does not support. https://yusuf-gadelrab.github.io/guides/rag-explained.html https://yusuf-gadelrab.github.io/guides/rag-explained.html Wed, 29 Jul 2026 00:00:00 +0000 What retrieval-augmented generation is, how chunking, embeddings and reranking fit together, where RAG breaks, and when a graph beats vector search. https://yusuf-gadelrab.github.io/guides/r-multiple-expectancy.html https://yusuf-gadelrab.github.io/guides/r-multiple-expectancy.html Wed, 29 Jul 2026 00:00:00 +0000 What an R-multiple is, how to calculate expectancy, the break-even win rate for any R:R, and why a 70% win rate can still lose money. Free calculator. https://yusuf-gadelrab.github.io/guides/prompt-caching.html https://yusuf-gadelrab.github.io/guides/prompt-caching.html Wed, 29 Jul 2026 00:00:00 +0000 How LLM prefix caching works, cache TTL and break-even math, ordering a prompt so the stable part comes first, and when caching costs you more. https://yusuf-gadelrab.github.io/guides/embedding-model-rag.html https://yusuf-gadelrab.github.io/guides/embedding-model-rag.html Wed, 29 Jul 2026 00:00:00 +0000 How to pick an embedding model for RAG: dimensions vs cost, local vs API, chunking interactions, recall@k evaluation, and when a reranker wins. https://yusuf-gadelrab.github.io/guides/f1-cpt-one-year-rule.html https://yusuf-gadelrab.github.io/guides/f1-cpt-one-year-rule.html Wed, 29 Jul 2026 00:00:00 +0000 What one full academic year of full-time enrollment means for CPT, how the clock is counted, CPT versus OPT versus day-1 CPT, and what breaks eligibility. https://yusuf-gadelrab.github.io/guides/ollama-vs-lm-studio-vs-llama-cpp.html https://yusuf-gadelrab.github.io/guides/ollama-vs-lm-studio-vs-llama-cpp.html Wed, 29 Jul 2026 00:00:00 +0000 A practical comparison of Ollama, LM Studio, and llama.cpp for running local LLMs on Apple Silicon: setup, model management, APIs, and quantization. https://yusuf-gadelrab.github.io/guides/notion-vs-obsidian-vs-markdown-files.html https://yusuf-gadelrab.github.io/guides/notion-vs-obsidian-vs-markdown-files.html Wed, 29 Jul 2026 00:00:00 +0000 A second brain comparison for students: where your notes really live, what leaving each tool costs you, and which one actually fits how you work. https://yusuf-gadelrab.github.io/guides/moe-model-macbook.html https://yusuf-gadelrab.github.io/guides/moe-model-macbook.html Wed, 29 Jul 2026 00:00:00 +0000 What mixture-of-experts changes about RAM, quantization levels, KV cache math, Ollama tuning, and realistic tokens per second on Apple Silicon. https://yusuf-gadelrab.github.io/guides/leveraged-etf-decay.html https://yusuf-gadelrab.github.io/guides/leveraged-etf-decay.html Wed, 29 Jul 2026 00:00:00 +0000 Daily rebalancing, volatility drag, and a worked two-day example where a 3x ETF loses on a flat round trip. When they fit, and why sizing must be tighter. https://yusuf-gadelrab.github.io/guides/lemon-squeezy-vs-gumroad-vs-payhip-vs-etsy.html https://yusuf-gadelrab.github.io/guides/lemon-squeezy-vs-gumroad-vs-payhip-vs-etsy.html Wed, 29 Jul 2026 00:00:00 +0000 Take-home arithmetic on one list price across four digital product platforms, plus merchant of record, VAT, payouts, and when discovery is worth the cut. https://yusuf-gadelrab.github.io/guides/bilingual-coding-cs-education.html https://yusuf-gadelrab.github.io/guides/bilingual-coding-cs-education.html Wed, 29 Jul 2026 00:00:00 +0000 What bilingual coding is, why second-language load hurts novice programmers, and what a 60-participant SIGCSE 2026 study found about confidence. https://yusuf-gadelrab.github.io/guides/kelly-criterion.html https://yusuf-gadelrab.github.io/guides/kelly-criterion.html Wed, 29 Jul 2026 00:00:00 +0000 How the Kelly criterion works, the formula for trading with an R-multiple edge, why full Kelly is unusable in practice, and how half and quarter Kelly compare. https://yusuf-gadelrab.github.io/guides/undergraduate-research.html https://yusuf-gadelrab.github.io/guides/undergraduate-research.html Wed, 29 Jul 2026 00:00:00 +0000 How to find a lab, email a professor, survive the first task, and why publishing as an undergraduate is disproportionately valuable. https://yusuf-gadelrab.github.io/guides/backtest-overfitting.html https://yusuf-gadelrab.github.io/guides/backtest-overfitting.html Wed, 29 Jul 2026 00:00:00 +0000 In-sample vs held-out testing, parameter plateaus vs spikes, the multiple-testing arithmetic, and the random-entry control that kills most edges. https://yusuf-gadelrab.github.io/guides/position-sizing-per-trade.html https://yusuf-gadelrab.github.io/guides/position-sizing-per-trade.html Wed, 29 Jul 2026 00:00:00 +0000 Fixed-fractional, fixed-dollar, and ATR-adjusted sizing with worked arithmetic. Where the 1% rule comes from, portfolio heat, and notional caps. https://yusuf-gadelrab.github.io/guides/walk-forward-backtest.html https://yusuf-gadelrab.github.io/guides/walk-forward-backtest.html Wed, 29 Jul 2026 00:00:00 +0000 Why in-sample backtests lie, what lookahead and survivorship bias look like in code, how walk-forward works, and how to spot a curve fit. https://yusuf-gadelrab.github.io/guides/ai-search-optimization.html https://yusuf-gadelrab.github.io/guides/ai-search-optimization.html Wed, 29 Jul 2026 00:00:00 +0000 Entity consolidation, llms.txt, robots.txt rules for named AI crawlers, FAQPage that mirrors visible text, answer-first writing, and IndexNow for fast recrawl. https://yusuf-gadelrab.github.io/guides/structured-llm-output.html https://yusuf-gadelrab.github.io/guides/structured-llm-output.html Wed, 29 Jul 2026 00:00:00 +0000 JSON mode vs tool calling vs constrained decoding vs schema validation with retry, why parsing free text fails, and idempotency for partial LLM output. https://yusuf-gadelrab.github.io/guides/freight-broker-margin.html https://yusuf-gadelrab.github.io/guides/freight-broker-margin.html Wed, 29 Jul 2026 00:00:00 +0000 Calculate freight broker margin, rate per mile, deadhead, fuel surcharge, detention, and break-even on a load. Every formula worked out, free calculator. https://yusuf-gadelrab.github.io/guides/free-vs-paid-student-tools.html https://yusuf-gadelrab.github.io/guides/free-vs-paid-student-tools.html Wed, 29 Jul 2026 00:00:00 +0000 A decision framework and scored table across 15 tool categories for CS students on what deserves money and what free option is already enough. https://yusuf-gadelrab.github.io/guides/cold-email-professor-research.html https://yusuf-gadelrab.github.io/guides/cold-email-professor-research.html Wed, 29 Jul 2026 00:00:00 +0000 What actually gets a reply: reading the lab's recent papers, a five-sentence structure, what to attach, follow-up cadence, and two complete examples. https://yusuf-gadelrab.github.io/guides/scholarships-international-students.html https://yusuf-gadelrab.github.io/guides/scholarships-international-students.html Wed, 29 Jul 2026 00:00:00 +0000 How international students find and win scholarships, where eligibility usually breaks, and how to run an application pipeline that survives deadlines. https://yusuf-gadelrab.github.io/guides/cpt-vs-opt.html https://yusuf-gadelrab.github.io/guides/cpt-vs-opt.html Wed, 29 Jul 2026 00:00:00 +0000 CPT vs OPT for F-1 students: eligibility, who authorizes what, the one-year rule, the 12-month limit, STEM extension, unemployment days. Plan backwards. https://yusuf-gadelrab.github.io/guides/ai-automation-small-business.html https://yusuf-gadelrab.github.io/guides/ai-automation-small-business.html Wed, 29 Jul 2026 00:00:00 +0000 A practical filter for which small-business tasks AI should handle, the two-tier local plus frontier pattern, and why the quality gate is the product. https://yusuf-gadelrab.github.io/guides/anchored-vwap.html https://yusuf-gadelrab.github.io/guides/anchored-vwap.html Wed, 29 Jul 2026 00:00:00 +0000 What anchored VWAP is, how it differs from session VWAP, where to anchor, what a reclaim means, and the walk-forward result behind it. https://yusuf-gadelrab.github.io/guides/offline-pwa.html https://yusuf-gadelrab.github.io/guides/offline-pwa.html Wed, 29 Jul 2026 00:00:00 +0000 How to build an installable offline PWA with no backend: manifest fields, service worker caching, cache versioning, and how iOS install differs. https://yusuf-gadelrab.github.io/guides/alpaca-vs-interactive-brokers-vs-robinhood.html https://yusuf-gadelrab.github.io/guides/alpaca-vs-interactive-brokers-vs-robinhood.html Wed, 29 Jul 2026 00:00:00 +0000 API quality, real paper trading, data access and costs across three brokers, plus why unofficial reverse-engineered trading APIs get accounts restricted. https://yusuf-gadelrab.github.io/guides/freight-back-office.html https://yusuf-gadelrab.github.io/guides/freight-back-office.html Wed, 29 Jul 2026 00:00:00 +0000 What a small brokerage does after the load books: confirmations, check calls, POD chasing, invoicing and AR — and what automates cleanly. https://yusuf-gadelrab.github.io/guides/trading-journal.html https://yusuf-gadelrab.github.io/guides/trading-journal.html Wed, 29 Jul 2026 00:00:00 +0000 The fields that change behaviour in a trading journal — R-multiple, setup tag, mistake tag, MAE/MFE — and how to review without lying to yourself. https://yusuf-gadelrab.github.io/guides/landing-page-that-converts.html https://yusuf-gadelrab.github.io/guides/landing-page-that-converts.html Wed, 29 Jul 2026 00:00:00 +0000 The one-job rule, above-the-fold structure, specificity over adjectives, proof when you have none, and how to measure a page without a tracking stack. https://yusuf-gadelrab.github.io/guides/cut-calorie-math.html https://yusuf-gadelrab.github.io/guides/cut-calorie-math.html Wed, 29 Jul 2026 00:00:00 +0000 How a calorie deficit actually works: maintenance estimation, deficit size, protein, why the scale lies week to week, and how to track it without obsessing. https://yusuf-gadelrab.github.io/guides/student-founder-security-checklist.html https://yusuf-gadelrab.github.io/guides/student-founder-security-checklist.html Wed, 29 Jul 2026 00:00:00 +0000 An 18-point security checklist for student founders shipping their first product: secrets, dependency CVEs, config, TLS, backups, and more.