Dl4All: download free for all software and educational resources

PYTHON FOR YOUR PERSONAL dаta: 50 Practical Projects to Organize, Clean, Analyze, and Understand Your Digital Life
English | October 9, 2026 | ASIN: B0HMJ2WP38 | 696 pages | Epub | 694.53 KB
Your computer is full of data.Files. Photos. Documents. Spreadsheets. Downloads. Reading lists. Expenses. Contacts. Archives. Reports. Personal records.The problem isn't always collecting information. The problem is finding it, organizing it, cleaning it, and understanding what you already have.Python for Your Personal Data shows you how to turn Python into a practical toolkit for working with the digital information already sitting on your computer.You don't need to become a professional programmer.You learn by building 50 practical projects that solve recognizable personal-data problems.Inside, you'll learn how to:Build a personal file inventoryFind duplicate and oversized filesClean messy filenamesOrganize files safelySearch across documents and foldersCreate searchable file indexesClean messy CSV dataFind missing and duplicate recordsCombine multiple datasetsAnalyze personal expenses and subscriptionsUnderstand storage usageWork with reading lists and personal collectionsBuild document and photo inventoriesExtract and analyze textCreate useful reports and summariesVisualize personal data with chartsCompare datasetsBuild personal dashboardsCreate digital archive search toolsDevelop your own personal data toolkitEvery project follows a practical path:Problem → Python Idea → Complete Code → Explanation → Result → CustomizationYou won't just learn Python syntax. You'll learn how to recognize the kinds of repetitive data problems that Python can solve.The book also emphasizes something that matters whenever you're working with personal information: safety.You'll learn about synthetic test data, backups, dry-run modes, collision protection, data minimization, privacy, API keys, sensitive information, and safe file automation.You'll also learn when not to automate something.Whether you're completely new to Python or already know the basics, this book gives you practical projects you can build, modify, and reuse.Your personal data is already there.Now learn how to make it:Findable. Clean. Organized. Searchable. Understandable. Useful.

POWER ELECTRONICS AND GRID SYNCHRONIZATION - VOLUME 3: Semiconductor Physics, Converter Topologies, Control Loops, and Grid-Code Compliance for ... ... Solar Power Engineering Handbook Series)
English | October 8, 2026 | ASIN: B0HMDJP8CD | 48 Pages | Epub | 1.15 MB
Power Electronics & Grid Synchronization is a practical technical reference for engineers working with utility-scale solar PV, battery energy storage systems (BESS), and microgrid power-conversion systems.This volume follows the complete electrical power-conversion path—from semiconductor switching devices and DC-DC converters to grid-connected inverters, control systems, filters, protection, transformers, and grid-code compliance.Inside, readers will explore:Power semiconductor devices, switching and conduction losses, and thermal designDC-DC converter topologies and component sizingTwo-level and three-level inverter bridges and PWM strategiesAdvanced MPPT algorithms and DSP implementationGrid-following and grid-forming inverter controlPLL-based grid synchronization and weak-grid stabilityd-q frame current and voltage control loopsVirtual synchronous machines and synthetic inertiaLCL filters, resonance suppression, and harmonic distortionIEEE 519 considerations and grid-code requirementsLVRT/HVRT, reactive current support, and protection coordinationTransformer selection and medium-voltage inverter skid engineeringPractical 1.0 MW and 3.3 MW worked design examplesField troubleshooting, diagnostic measurements, and typical thresholdsQuick-reference formulas, standards, and compliance checklistsDesigned as a working engineering reference, this book emphasizes practical equations, design decisions, worked examples, and field-oriented troubleshooting rather than purely theoretical derivations

Overcoming Objections in Sales: How to transform negotiation barriers into immediate closing opportunities
English | August 10, 2026 | ASIN: B0HDR82KZX | 107 pages | EPUB (True) | 465.83 KB
Tired of mediocre sales results? Want to turn your business into a magnet for loyal customers?In this series of practical, eye-opening ebooks, you'll gain access to an arsenal of advanced strategies and techniques to boost your sales to new heights and build lasting customer relationships.Throughout the series, you will:Unlock the secrets of consumer psychology: Understand the motivations and triggers behind buying decisions and learn to craft irresistible messages that convert leads into loyal customers.Master foolproof prospecting techniques: Discover how to find your ideal customers-even in competitive markets-and build a solid foundation of qualified leads.Hone your communication skills: Learn to communicate with clarity, persuasion, and empathy, forging genuine connections with customers and building the trust needed to close sales.Monetize your knowledge and skills: Become a sales expert and explore lucrative opportunities to offer your services as a consultant or mentor.Each ebook in the series offers:Practical, actionable content: Proven tips and strategies you can implement in your business right away.Real-world examples and case studies: Learn from successful salespeople and replicate their results.Valuable tools and resources: Templates, checklists, and scripts to help you implement the strategies.Personalized guidance: Access to an exclusive group to ask questions and receive tailored support.Whether you're a beginner or a seasoned salesperson, this ebook series is the key to your success.Invest in your future and become a sales master!Secure your complete series today and take the first step toward mastering the art of selling and building customer loyalty!

Openai Codex for Developers: Build, Refactor, Test, Review, and Ship Production Software with AI Coding Agents, Codex CLI, MCP, and Multi-Agent Workflows
English | October 3, 2026 | ASIN: B0HLWSQGR5 | 765 pages | Epub | 5.41 MB
Master OpenAI Codex by building real engineering workflows—not just experimenting with prompts.OpenAI Codex Projects Handbook is a practical, project-driven guide for developers who want to use Codex to plan, build, debug, test, refactor, review, and automate real software development work.Instead of treating Codex as a simple coding assistant, this book shows you how to work with it as an agentic engineering system. You'll learn how to structure tasks, provide effective repository context, use AGENTS.md, manage long-running work, verify changes, coordinate multiple agents, integrate tools and MCP servers, and build reliable workflows around real development projects.Through hands-on examples and reusable engineering patterns, you'll learn how to:Write clear engineering briefs and acceptance criteriaGive Codex the repository context it needsDebug bugs and implement features systematicallyRefactor and modernize code without losing behaviorVerify changes with tests, reviews, and release evidenceUse Codex safely with permissions, sandboxes, and security rulesCoordinate multi-agent and long-running development tasksTroubleshoot context drift, tool failures, conflicts, and unexpected editsBuild repeatable Codex workflows for production software engineeringWhether you are a developer exploring agentic coding for the first time or an experienced engineer looking to integrate Codex into serious development workflows, this handbook gives you a practical path from individual coding tasks to dependable AI-assisted engineering.Build with Codex. Verify the work. Turn AI-assisted coding into a repeatable engineering practice.

Open Models at Scale: Fine-Tuning, MLOps and GPU Infrastructure (AI Engineering in Practice)
English | September 25, 2026 | ASIN: B0HL1VRQ3F | 137 pages | Epub | 239.81 KB
Everyone can find a LoRA tutorial. Almost nobody can find the one document that goes from "which base model" to "what does this cost per month, forever, with an on-call rotation attached."Teams default to closed AI APIs because the open-model path is scattered across a hundred papers and blog posts with no coherent throughline. This book is that throughline: the full operational path for a self-hosted open-weight model, from picking a base to running it in production, told through one composite deployment you can audit end to end.Cost and control are the stated motivation here, not open-source ideology. Every GPU price is labeled illustrative, every model claim is checked against a primary source, and every capability claim that rests on a leaderboard score gets the skepticism a contaminated benchmark deserves. What you will learnWhen self-hosting actually wins — a five-question decision framework for volume, latency, customization, data residency and operational capacity, instead of ideologyChoosing a base model without getting fooled — reading a license that actually binds you, dense versus mixture-of-experts parameter counts, and why a benchmark score is a hypothesis, not a verdictFine-tuning that fits your budget — full fine-tuning, LoRA and QLoRA compared on what they change in the weights and what they cost in GPU memory, with a working QLoRA runData curation that actually moves the needle — deduplication, decontamination against your eval set, PII handling, and why 85,000 clean examples beat 400,000 dirty onesEvaluation you can stake a rollout on — regression against the base model, confidence intervals, memorization probes and a promotion gate that outgrows eyeballing samplesServing fast — PagedAttention, continuous batching, chunked prefill and multi-adapter serving with vLLMScaling training across GPUs — data, tensor, pipeline, sequence and expert parallelism, and when each one earns its complexityMixture-of-experts, honestly priced — DeepSeek-V3's published training economics as a real, sourced reference point, and a framework for knowing when MoE is not yet worth adoptingMLOps that treats a bad model like a bad deploy — a training pipeline, a model registry, and a rollback path with an actual paper trailThe total cost of control — a full year-one reconciliation, and the break-even calculator to run with your own numbers instead of borrowing this book's Ten chapters. One running deployment. Python that runs.For ML engineers and platform teams deciding whether to self-host — and then doing it properly.

Only for geniuses!
English | July 12, 2022 | ISBN: 9798201237844 | 64 Pages | EPUB (True) | 2.65 MB
Social networks have been very useful today, have even managed to overthrow a dictatorship, as happened in Egypt in 2013, when several people called to demonstrate against the then President Mohamed Morsi, who had been ruling for more than 30 years.

On the "Economic Formation of Society"
English | August 25, 2026 | ASIN: B0HGFPZBGK | 839 pages | EPUB (True) | 1.07 MB
SynopsisThe author was one of Professor Zhao Lisheng's most accomplished disciples in the field of the history of the Chinese land system during Zhao's later years.Following his mentor's approach, the author employs Marx's category of the "economic formation of society" to examine the so-called "five social formations" and thereby clarify the underlying logic of Chinese historical development. He develops Zhao's lines of inquiry into the transformation of ancient human society, the evolution of property relations, the movement from communal ownership to private ownership and from private ownership toward a higher form of common ownership, and the progressive deepening of private property. Methodologically, the work addresses the problems of "substituting theory for history," "deriving theory from history," and the "integration of history and theory" in the study of the history of the Chinese land system.This volume identifies a theoretical thread that, the author argues, had long escaped sufficient notice but runs throughout Marx's work on Capital: the "economic formation of society." It develops its argument through a systematic integration of history and theory.Three Contributions to the Study of the Chinese Land SystemAt the level of historical materials, it rejects the traditional account of the "well-field system."At the theoretical level, it restores the so-called "Asiatic mode of production" to Marx's original discussion of the "Asiatic" "mode of production" within the category of the "economic formation of society."At the level of historical interpretation, it breaks with the "Soviet-Marxist" model of the so-called "five 'social formations.'

Ollama in Practice: A Hands-On Guide to Running AI Models Locally and Building LLM Applications
English | October 5, 2026 | ASIN: B0HM2HS5WG | 611 pages | Epub | 35.87 MB
Learn Ollama and Build with Local AILarge language models are no longer limited to cloud-based services. With the right tools, developers can run capable AI models directly on their own computers and integrate them into applications and development workflows.Ollama in Practice: A Hands-On Guide to Running AI Models Locally and Building LLM Applications introduces Ollama through a practical, progressive approach. The book begins with the fundamentals and gradually moves toward application development and more advanced local AI workflows.You will start by understanding what Ollama is, how local large language models work, and how to install and configure Ollama on your computer. From there, you will learn how to download and manage models, write effective prompts, configure model behavior, and create customized models using Modelfiles.The book then moves beyond the command line into application development. You will explore the Ollama API and learn how applications can communicate with local language models. Practical integrations with Python and jаvascript demonstrate how Ollama can become part of your own software projects.As you progress, the book introduces important concepts used in modern LLM applications, including embeddings, semantic search, document processing, and Retrieval-Augmented Generation. These concepts are connected together to demonstrate how local AI applications can work with your own information and documents.The later chapters explore practical projects, performance considerations, security, troubleshooting, deployment concepts, and best practices for developing local AI applications.Inside the BookIntroduction to Ollama and local LLMsInstallation and configurationRunning and managing modelsUnderstanding model sizes and quantizationPrompt engineering fundamentalsModel configurationModelfiles and custom modelsOllama API fundamentalsPython integrationjаvascript integrationLocal AI chat applicationsDocument processingEmbeddings and semantic searchRetrieval-Augmented GenerationTool calling and structured outputsStreaming responsesHardware and performance considerationsPractical local AI projectsSecurity and troubleshootingDeployment and development best practicesWho This Book Is ForThis book is suitable for developers, programmers, students, technical learners, and AI enthusiasts who want to understand Ollama and explore local large language model development.You do not need to be an AI researcher to follow the material. The concepts are introduced progressively, with practical explanations and examples designed to help readers understand not only what Ollama can do, but also how and why it can be used in real applications.If you want to experiment with local LLMs, develop AI-powered applications, or understand the practical foundations of Ollama-based development, this book provides a structured starting point.

Nuragic Civilization, Sardinia's Stone Towers and Bronze Age Legacy: ODYSSEY OF EMPIRES, DYNASTIES, AND CIVILIZATIONS, #1
English | October 28, 2025 | ISBN: 9798232082024 | 243 Pages | EPUB (True) | 614.69 KB
Sardinia's Nuragic civilization stands as one of the most remarkable and enigmatic cultures of the Bronze Age. From towering stone nuraghi to intricate bronze figurines, this ancient society demonstrates an extraordinary mastery of architecture, metallurgy, and social organization. Spanning over a millennium, the Nuragic people built monumental towers, sacred wells, and communal tombs that reflect both practical ingenuity and spiritual depth. Through archaeology, myth, and modern scientific analysis, this book uncovers the hidden networks of trade, ritual, and daily life that shaped a resilient and sophisticated island civilization long before the rise of Rome.

Numerical Methods with algorithms and programs: Numerical Methods
English | August 2, 2022 | ISBN: None | 67 Pages | EPUB (True) | 135.18 KB
This book is designed as an advanced guide for numerical methods in the science. It covers many topics of practical numerical methods applied in the science: solutions of equations with one variable: bisection, secant, false rule, Newton-Raphson, fixed point, etc., solution of systems of equations: Gauss, Gauss-Jordan, Cramer, Inverse Matrix, Jacobi, Gauss-Seidel, Gauss-Seidel with relaxation, etc., polynomial interpolation: Lagrange interpolation, Newton interpolation, interpolation with equidistant spaces, etc., the method of the least square method for a polynomial fit (regression analysis), etc., numerical derivatives, finite differential discretization of the derivative, numerical integrations: trapeze method, Simpson 1/3, Simpson 3/8, differential equations: Euler, Runge-Kutta, differential equations with boundary values, etc. It is included the deduction of many formulas in order to clear the concepts of the numerical methods applied in Science. It is hoped that this book fills all needs of the students to get the fundaments of the numerical methods and to achieve the interest and motivation of the students for this topic.