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PICK UP [2026] 10 Recommended Technical Books for Engineers: Field-by-Field Classics from a Working Engineer's Perspective A field-by-field guide to classic technical books on code quality, Linux, Git, design … PICK UP 12 Recommended Books for Learning Signal Processing, Machine Learning, and Control in Python (2026, by Level) A curated, level-by-level selection of Japanese-language technical books for learning …

GitHubにSSH接続する設定方法【ed25519対応】鍵の作成から接続確認・トラブル解決まで

July 20, 2026 5 min read

The Complete Guide to Linux Permissions: From What chmod's Numbers Mean to SUID and ACLs

July 20, 2026 17 min read

Linux Commands Infrastructure Security

The Definitive Guide to Python Environment Setup in 2026: uv vs pyenv vs venv vs conda

July 20, 2026 12 min read

Python Environment Setup uv Developer Tools

What Is 'use client'? A Deep Dive into the Server/Client Component Boundary in Next.js App Router

July 20, 2026 15 min read

Next.js React TypeScript Frontend

What Is a DDD Aggregate? A Complete Guide to Aggregate Roots, Invariants, and Transaction Boundaries

July 20, 2026 7 min read

DDD Domain-Driven Design Software Design TypeScript Programming

Modeling Database Connection Pool Sizing with Queueing Theory (M/M/c)

July 16, 2026 11 min read

Database DB Queueing Theory Statistics Python Simulation

Understanding SSH Key Exchange Through Diffie-Hellman and Elliptic Curve Cryptography: Verifying curve25519-sha256 and Session Key Derivation in Python

July 16, 2026 12 min read

SSH Cryptography Networking Python

Anomaly Detection on Prometheus Metrics: EWMA Adaptive Thresholds vs. Kalman Filter in Python

July 16, 2026 9 min read

Prometheus Monitoring Signal Processing Python Machine Learning

Ensemble Kalman Filter (EnKF): Theory and Python Implementation for High-Dimensional Data Assimilation

July 16, 2026 6 min read

Machine Learning Filtering Monte Carlo Method Python

Measuring Kubernetes' Horizontal Pod Autoscaler (HPA) as a PID Control Loop: Comparing Overshoot and Settling Time Against Ratio Control

July 16, 2026 9 min read

Kubernetes Control Theory PID Python

Hamiltonian Monte Carlo (HMC) in Python: Overcoming the Metropolis Algorithm's Weaknesses with Leapfrog Integration

July 15, 2026 14 min read

Machine Learning Python Algorithms

GARCH(1,1) in Python: Modeling Volatility Clustering and Confirming the ARCH Effect with the Ljung-Box Test

July 15, 2026 14 min read

Statistics Python Data Visualization

Post-Quantum Cryptography in Python: Learning With Errors (LWE), Regev Encryption, and Why It Resists Quantum Computers

July 15, 2026 19 min read

Algorithms Cryptography Python

SHA-256 and HMAC in Python: The Merkle-Damgård Construction, Length-Extension Attacks, and RFC 4231 Verification

July 15, 2026 10 min read

Algorithms Cryptography Python

Dissecting the TLS 1.3 Handshake in Python: ECDHE, the HKDF Key Schedule, and AEAD

July 15, 2026 14 min read

Algorithms Cryptography Python

SVM Kernel Design in Python: Mercer's Theorem, Gram Matrix Positive-Definiteness, and Random Fourier Features

July 15, 2026 12 min read

Machine Learning Python Algorithms

ARMA/ARIMA in State-Space Form: Kalman-Filter Maximum Likelihood Estimation, Reproducing statsmodels from Scratch

July 15, 2026 11 min read

Statistics Python Data Visualization

The RLS Algorithm in Python: Recursive Least Squares, Its Equivalence to the Kalman Filter, and the Forgetting Factor

July 15, 2026 14 min read

Signal Processing Python Adaptive Filtering

Nonlinear Kalman Smoothers in Python: Extended RTS Smoother and Unscented RTS Smoother

July 14, 2026 14 min read

Machine Learning Filtering Signal Processing Python

Teager-Kaiser Energy Operator (TKEO) in Python: A Faster Alternative to the Hilbert Transform for Bearing Diagnostics

July 14, 2026 14 min read

Signal Processing Filtering Python