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Python Polars: The Definitive Guide
by Jeroen Janssens;Thijs Nieuwdorp;
English | 2025 | ISBN: 1098156080 | 504 pages | True PDF | 15.86 MB

Unlock the power of Polars, a Python package for transforming, analyzing, and visualizing data. In this hands-on guide, Jeroen Janssens and Thijs Nieuwdorp walk you through every feature of Polars, showing you how to use it for real-world tasks like data wrangling, exploratory data analysis, building pipelines, and more.
Whether you're a seasoned data professional or new to data science, you'll quickly master Polars' expressive API and its underlying concepts. You don't need to have experience with pandas, but if you do, this book will help you make a seamless transition. The many practical examples and real-world datasets are available on GitHub, so you can easily follow along.
Process data from CSV, Parquet, spreadsheets, databases, and the cloudGet a solid understanding of Expressions, the building blocks of every queryHandle complex data types, including text, time, and nested structuresUse both eager and lazy APIs, and know when to use eachVisualize your data with Altair, hvDescription, Descriptionnine, and Great TablesExtend Polars with your own Python functions and Rust pluginsLeverage GPU acceleration to boost performance even further

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Python Programming Beginner's Guide: Master the Fundamentals of Python and Build Real-World Skills by Doug Williams
English | January 1, 2025 | ISBN: N/A | ASIN: B0DS2VFZKG | 164 pages | EPUB | 0.29 Mb
Unlock Your Potential: Learn Python Programming with Ease, Even if You're a Complete Beginner!

Are you curious about programming but feel overwhelmed by where to start? Have you ever wondered how apps, websites, and automation tools are built? If so, Python Programming Beginner's Guide by Doug Williams is the book you've been searching for-even if you've never written a single line of code.
Python is one of the most beginner-friendly and versatile programming languages, perfect for anyone new to coding. Whether you're a student, a professional looking to expand your skills, or simply a hobbyist eager to explore the world of tech, this guide makes programming approachable, engaging, and rewarding.
Why This Book Is Perfect for You:Learn Step-by-Step: No jargon, no fluff-just clear, simple lessons that build on each other. You'll start with the basics of Python and gradually gain the confidence to tackle more complex topics.Perfect for Beginners: Even if you've never touched a computer program before, this book is designed to guide you from complete novice to capable coder.Real-World Applications: See how Python can automate tasks, analyze data, and solve everyday problems. Whether you're organizing files, scraping websites, or visualizing data, Python makes it easy.Interactive Learning: With practical examples and hands-on exercises, you won't just read about programming-you'll actually write and run your own code.Build Something Amazing: By the end of the book, you'll complete a guided project, applying everything you've learned to create a functional program.What You'll Learn:How to write your first Python program and understand core concepts like variables, loops, and functions.The secrets of object-oriented programming and why it's essential for modern software development.How to automate repetitive tasks to save time and boost productivity.The basics of working with databases, networking, and data visualization.Who Should Read This Book?Complete beginners with no prior programming experience.Self-starters looking for a friendly introduction to Python.Career changers eager to explore the world of tech.Students wanting a comprehensive yet accessible guide to coding fundamentals.Why Python?
Python is the go-to language for beginners because it's intuitive, powerful, and used by companies like Google, Netflix, and NASA. From web development and data science to artificial intelligence, Python is a skill that opens doors to endless possibilities.
Your Journey Starts Here
You don't need to be a math wizard or a tech genius to start coding. With Python Programming Beginner's Guide, Doug Williams provides a clear path for anyone ready to learn. This book turns the seemingly complex world of programming into something simple, exciting, and achievable.
Start your journey today and discover the power of Python-because the future belongs to those who code!

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Qualified: How Competency Checking and Race Collide at Work by Shari Dunn
English | February 25, 2025 | ISBN: 0063354063 | 320 pages | PDF | 3.40 Mb
A groundbreaking work challenging the false narrative that diversity equals a lack of qualifications by uncovering the impact of "competency checking," a practice that unjustly scrutinizes Black people and other people of color, forcing them to repeatedly provetheir worth, intelligence, and even their right to be in the workplace.

The advancement of Black and other people of color in the workplace is under attack as there is a turn away from the promise of the "racial reconciliation" of 2020. This period saw Black talent rise in the workplace from DEI managers to CEOs to junior-level hires. Yet, the post-2020 workplace is seeing an alarming retreat from creating workplaces and leadership that reflect the nation's diversity.
That retreat is characterized by underemployment, cracked glass cliffs, toxic work environments, and claims of "empty pipelines." More concerning, Black professionals and other people of color often face greater scrutiny than their peers regarding job applications, work experience, and qualifications to even be considered for employment or advancement. And that scrutiny has a name: Competency Checking.
When it comes to hiring Black talent, the pipeline isn't broken; rather, it is the assumptions we make about who is competent and qualified. In Qualified, award-winning executive and journalist Shari Dunn combines deep research with enlightening interviews and anecdotes from across the broad spectrum of her career to uncover the history of Competency Checking, how it manifests in the workplace, and what can be done to change it. Competency checking, Dunn argues, continues to be practiced consciously and unconsciously and is the key reason why Black people and other people of color are underrepresented in so many industries and why there continues to be a revolving door of Black talent even after the hiring surges of 2020.

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Qualitative research at the marketing/entrepreneurship interface By David Crick
2004 | 73 Pages | ISBN: 1845444094 | PDF | 1 MB
The essence of entrepreneurship is "effectual action". Researchers at the entrepreneurial/marketing interface suggest that small firms adapt marketing theory to their needs, undertaking a range of emergent actions in response to day-to-day events and problems, without recourse to formal planning or research. By way of contrast, brands require guided action, in order to build a sustainable position in the marketplace, while research also reveals that small specialist firms increase their chance of failure if they undertake a range of unguided actions that lead to niche drift. Based upon an in-depth case study, identifies that SMEs do benefit from constant actions, but only if guided by a strong set of positioning values, which are diffused into an organisational culture, primarily via the actions of the leader.

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Quality and Patient Safety in Medical Imaging: A Modality-Based Approach by Jie Zhang
English | July 1, 2025 | ISBN: 303189006X | 184 pages | PDF, EPUB | 56 Mb
This book serves as a comprehensive resource for both the public and professionals in the medical imaging field. Its primary objective is to address the critical concerns related to quality and patient safety within the context of various imaging techniques. The field of medical imaging is constantly evolving, with advancements in technology and techniques, making it crucial to stay updated with the latest information. This book aims to bridge the knowledge gap in this domain by providing an in-depth understanding of the indications, performance, and safety aspects of various imaging modalities.

Chapters offer insights into the indications and performance of key imaging techniques, including X-ray, magnetic resonance imaging (MRI), computed tomography (CT), ultrasound, women's imaging, DEXA (Dual-Energy X-ray Absorptiometry), dental imaging, and nuclear medicine.They additionally provide an up-to-date overview of quality assurance and quality control programs relevant to medical imaging and explore the safety concerns associated with imaging techniques, including radiation exposure, the use of contrast agents, and image-guided biopsy.
This book addresses a significant gap in the field of medical imaging by providing a comprehensive and up-to-date resource that is accessible. It combines technical and clinical information with a focus on quality and safety, making it an essential reference for individuals seeking to understand and navigate the complexities of medical imaging. The book's structured approach, incorporating the latest regulations and ongoing quality improvement efforts, ensures that readers are equipped with the knowledge necessary to provide and receive safe and effective medical imaging services.

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Quantum Dot Display Science and Technology
English | 2025 | ISBN: 139418185X | 512 Pages | PDF | 48 MB
Quantum Dot Display Science and Technology presents all aspects of quantum dot (QD) based display technologies, divided into four general topic areas: the basic science of quantum dots, QD photoluminescent technologies, QD electroluminescent technologies, and other display related QD technologies. Composed of 14 chapters, this book includes a list of pedagogical features such as tables, illustrations, process flow charts, and more to provide active learning for the reader. This book also includes information on future quantum dot displays and the major milestones in the field.

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Quantum Photonics: Bimodes, Qubits, and Biphotons
English | 2025 | ISBN: 3031891201 | 488 Pages | PDF (True) | 16 MB
This book introduces classical modal optics and discrete quantum systems using a common mathematical approach based on linear vector spaces. It explores the three key elements of photonic quantum information: the optical bimode, the qubit, and the photon. Both the bimode and qubit are represented as vectors in a two-dimensional linear vector space, but the qubit distinguishes itself through unique properties linked to quantum measurement. While optical bimodes can be mutually coupled, qubits can be entangled, enabling revolutionary quantum information technologies.

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Quantum Threads: Weaving the Mysteries of the Cosmos by Dr Priyadarshi Dravid
English | April 18, 2025 | ISBN: N/A | ASIN: B0F5MYG8YL | 91 pages | EPUB | 0.68 Mb
The quantum world is a tapestry woven from threads of paradox, where particles dance as waves, entangle across cosmic distances, and slip through impossible barriers. Through ten ideas-wave-particle duality, entanglement, uncertainty, superposition, tunneling, the observer effect, quantum fields, many worlds, quantum computing, and quantum gravity-we've journeyed into a realm that, as Richard Feynman declared, nobody truly understands yet everyone marvels at. Each concept is a metaphor for meaning, condensing the universe's strangeness into insights that illuminate our reality. Like a prism splitting light into a spectrum, quantum mechanics reveals a cosmos vibrant with possibility, yet shrouded in mysteries that beckon us forward. As we stand on the quantum horizon, let us reflect on what we've learned, what remains unknown, and what the future may hold, embracing a universe that sings with wonder.

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Quantum Transport in Interacting Nanojunctions: A Density Matrix Approach (Lecture Notes in Physics, 1024) by Andrea Donarini, Milena Grifoni
English | August 13, 2024 | ISBN: 3031556186 | 594 pages | MOBI | 78 Mb
This book serves as an introduction to the growing field of quantum many-body transport in interacting nanojunctions. It delves into a theoretical approach based on a general density-matrix formulation for open quantum systems. In the book, relevant transport observables, like the current or its higher order cumulants, are obtained by evaluating quantum statistical averages. This approach requires the knowledge of the reduced density matrix of the interacting nanosystems.

The formulation for addressing transport problems, based on the evolution of the reduced density operator in Liouville space, is highly versatile. It enables the treatment of charge and spin transport across various realistic nanostructures. Topics encompass standard Coulomb blockade, cotunneling phenomena in quantum dots, vibrational and Franck-Condon effects in molecular junctions, as well as many-body interference observed in double quantum dots or carbon nanotubes.
Derived from lectures tailored for graduate and advanced students at the University of Regensburg in Germany, this book is enriched with exercises and step-by-step derivations.

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Miriam Kienle, "Queer Networks: Ray Johnson's Correspondence Art"
English | ISBN: 151791163X | 2023 | 296 pages | EPUB | 15 MB
How the queer correspondence art of Ray Johnson disrupted art world conventions and anticipated today's highly networked culture

Once regarded as "New York's most famous unknown artist," Ray Johnson was a highly visible outlier in the art world, his mail art practice reflecting the changing social relations and politics of queer communities in the 1960s. A vital contribution to the growing scholarship on this enigmatic artist, Queer Networks analyzes how Johnson's practice sought to undermine the dominant mechanisms of the art market and gallery system in favor of unconventional social connections.
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Miriam Kienle, "Queer Networks: Ray Johnson's Correspondence Art"
English | ISBN: 151791163X | 2023 | 296 pages | PDF | 19 MB
How the queer correspondence art of Ray Johnson disrupted art world conventions and anticipated today's highly networked culture

Once regarded as "New York's most famous unknown artist," Ray Johnson was a highly visible outlier in the art world, his mail art practice reflecting the changing social relations and politics of queer communities in the 1960s. A vital contribution to the growing scholarship on this enigmatic artist, Queer Networks analyzes how Johnson's practice sought to undermine the dominant mechanisms of the art market and gallery system in favor of unconventional social connections.
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Quick & Easy All Stars Block Tool: 110 Quilt Blocks in 5 Sizes with Project Ideas
by Debbie Rodgers
English | 2025 | ISBN: 164403607X | 128 pages | True EPUB | 36.8 MB

Includes more than 100 dazzling star blocks in the tried-and-true block tool format!
The All Stars Block Tool makes all-star quilts! This collection of 110 blocks in the no-math reference format features a variety of traditional and innovative star designs. Each block has detailed reference tables, cutting instructions, exploded construction diagrams, project inspiration, and color examples.
It includes 20 popular star blocks from the block tool series while introducing 90 brand-new star blocks. From variations on classic sawtooth and bear paws to innovative, fresh star designs using a triangle in a square, this block tool will surely delight your starry dreams!
Each of the 110 star quilt blocks includes cutting and yardage reference tables for five sizes, value layouts, project illustrations, and color inspiration
The user-friendly cutting instructions, block indexes, precut-friendly projects, and line drawings make planning quilts a breeze!
Use the exploded construction diagrams to piece every block with ease

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Shoko Haneda, "R&D Management Practices and Innovation: Evidence from a Firm Survey "
English | ISBN: 9811697965 | 2022 | 122 pages | EPUB | 2 MB
This Open Access book provides a detailed account of firms' research and development (R&D) management practices, and whether and how R&D management practices are associated with the success and the nature (explorative or exploitive) of innovation, using a unique survey of firms in Japan. While there is wide agreement that innovation is a key determinant for growth of firms, there are few studies that systematically and quantitatively investigate what firms do in their R&D management to create innovation. Utilizing insights from theoretical and empirical studies on innovation, the authors focus on the following four aspects of R&D management: the organizational structure of R&D, staged project management for R&D projects, compensation and incentive schemes for R&D personnel, and a firm's risk preferences and corporate culture. The authors examine whether and how R&D management practices are linked to the likelihood of firms' success in making product innovations and the choice between explorative and exploitive innovation. The book furnishes vital information that can be used as a reference for future theoretical and empirical analyses of R&D management practices and innovation. This monograph is highly recommended to academics and practitioners who seek an in-depth and detailed analysis of R&D management.

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Vaughn Rasberry, "Race and the Totalitarian Century: Geopolitics in the Black Literary Imagination"
English | ISBN: 0674971086 | 2016 | 496 pages | EPUB | 863 KB
Few concepts evoke the twentieth century's record of war, genocide, repression, and extremism more powerfully than the idea of totalitarianism. Today, studies of the subject are usually confined to discussions of Europe's collapse in World War II or to comparisons between the Soviet Union and Nazi Germany. In Race and the Totalitarian Century, Vaughn Rasberry parts ways with both proponents and detractors of these normative conceptions in order to tell the strikingly different story of how black American writers manipulated the geopolitical rhetoric of their time.

During World War II and the Cold War, the United States government conscripted African Americans into the fight against Nazism and Stalinism. An array of black writers, however, deflected the appeals of liberalism and its antitotalitarian propaganda in the service of decolonization. Richard Wright, W. E. B. Du Bois, Shirley Graham, C. L. R. James, John A. Williams, and others remained skeptical that totalitarian servitude and democratic liberty stood in stark opposition. Their skepticism allowed them to formulate an independent perspective that reimagined the antifascist, anticommunist narrative through the lens of racial injustice, with the United States as a tyrannical force in the Third World but also as an ironic agent of Asian and African independence.
Bringing a new interpretation to events such as the Bandung Conference of 1955 and the Suez Canal Crisis of 1956, Rasberry's bird's-eye view of black culture and politics offers an alternative history of the totalitarian century.
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Fabio Perocco, "Racism in and for the Welfare State "
English | ISBN: 3031060709 | 2022 | 372 pages | EPUB | 3 MB
This book presents a global overview of racism against immigrants within and in the name of the welfare state. Rich in documents and historical perspective, it analyses politics, practices, and discourses of welfare racism through the exam of discriminatory laws, measures and speeches by institutional actors, public figures, and organizations.

The strength and persistence of this form of racism are due to several factors, including racism's structural position in modern society, a colonial root of welfare state, the intrinsic limits of social rights in capitalism, and punitive migration policies.
An instrument of selection, exclusion and stigmatisation, welfare racism is a distinguishing feature of anti-immigrant institutional policies, which became specially aggressive in the neoliberal era with the dismantling of the welfare state and social rights.
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