出现在书名中的结果
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AUNT BETSEY， there's going to be a new Declaration of Independence. "Bless and save us， what do you mean， child?" And the startled old lady precipitated a pie into the oven with destructive haste. "I mean that， being of age， I'm going to take care of myself， and not be a burden any longer. Uncle wishes me out of the way; thinks I ought to go， and， sooner or later， will tell me so. I don't intend to wait for that， but， like the people in fairy tales， travel away into the world and seek my fortune. I know I can find it."
Ansys Workbench 2022中文版有限元分析从入门到精通
6人今日阅读
《Ansys Workbench 2022中文版有限元分析从入门到精通》针对以Ansys 2022版本，对Ansys Workbench分析的基本思路、操作步骤、应用技巧进行了详细介绍，并结合典型工程应用实例详细讲述了Ansys Workbench的具体应用方法。全书共13章，第1～4章为操作基础，详细介绍了Ansys Workbench分析全流程的基本步骤和方法，其中包括Ansys Workbench 2022入门、DesignModeler应用程序、Mechanical应用程序和一般网格控制；第5～13章为专题实例，按不同的分析专题讲解各种分析专题的参数设置方法与技巧，其中包括结构静力学分析、模态分析、屈曲分析、谐响应分析、响应谱分析、随机振动分析、非线性分析、热分析和优化设计等内容。
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ANSYS Workbench有限元分析实例详解（静力学）
6人今日阅读 推荐值 88.3%
本书以对比的方式系统且全面地说明ANSYSWorkbench静力学分析过程中的各种问题，从工程实例出发，侧重解决ANSYSWorkbench的实际操作和工程问题。
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ANSYS Workbench 16.0超级学习手册
1人今日阅读
本书详细介绍了ANSYS公司新版本的有限元分析平台Workbench16.0的功能及应用。通过学习，读者不仅能掌握软件的操作，同时也能掌握解决相关工程领域实际问题的思路与方法，并能自如地解决本领域所出现的问题。
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ANSYS Workbench有限元分析实例详解（热学和优化）
1人今日阅读
本书以联系和对比的方式系统且全面地讲解了ANSYS Workbench热学分析及优化设计过程中的各种问题，从工程实例出发，侧重解决热学计算问题和优化设计流程与工程问题。 本书内容分为4章：第1章介绍热学有限元分析的基本概念；第2章详细介绍ANSYS Workbench软件中Mechanical模块的热分析，包含热传导、热对流、热辐射、瞬态和非线性热分析、扩散、热固耦合分析；第3章详细介绍ANSYS Workbench软件中Fluent模块的热分析，包含热传导、移动热源、对流和辐射、多孔介质的蒸发、凝华结霜、热分析标量方程、流固耦合传热分析；第4章详细介绍ANSYS Workbench软件中的优化设计过程，重点讲解拓扑优化、增材制造和试验优化设计的基本原理及分析过程。 本书内容丰富新颖，融入了现代工程教育思想，旨在帮助读者提升运用工程方法解决实际问题的能力。本书主要面向ANSYS Workbench软件的初级和中级用户，可供机械、材料、土木、能源、汽车交通、航空航天、水利水电等专业的本科生、研究生、教师、工程技术人员和CAE爱好者学习参考。
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ANSYS Workbench热力学分析实例演练（2020版）
1人今日阅读
《ANSYS Workbench热力学分析实例演练（2020版）》以ANSYS Workbench 2020为操作平台，详细介绍了利用该平台进行热力学分析的演练过程。本书内容丰富，涉及领域广，使读者在掌握软件操作的同时，也能掌握解决相关工程领域实际问题的思路与方法，并能自如地应对本领域所出现的问题。《ANSYS Workbench热力学分析实例演练（2020版）》全书分为3篇，共12章。基础篇（第1~4章）从有限元理论着手介绍了热力学分析的理论基础以及ANSYS Workbench平台的基础知识；项目范例篇（第5~8章）以项目范例为指导，讲解在Workbench平台中进行的稳态热分析、非稳态热分析、非线性热分析、热辐射分析的理论计算公式与案例实际操作方法；高级应用篇（第9~12章）作为传热分析的高级部分，讲解在Workbench平台中进行的相变分析、优化分析、热应力耦合分析和热流耦合分析。《ANSYS Workbench热力学分析实例演练（2020版）》工程实例丰富、讲解详尽，内容安排循序渐进、深入浅出，适合理工院校土木工程、机械工程、力学、电气工程等与热力学分析有关专业的高年级本科生、研究生及教师使用，同时也可以作为相关工程技术人员从事工程研究的参考书。
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CAE分析大系：ANSYS Workbench结构分析与实例详解
1人今日阅读
ANSYS产品中的Workbench，以项目流程图的方式，将结构、流体、电磁等各种分析系统集成到统一平台中，进而实现不同软件之间的无缝链接，ANSYS 18.2 Workbench操作便捷，处理复杂的工程模型更为方便，软件的分析功能和各项操作也有了更好的提升和发展。 本书具体着眼于ANSYS软件的使用和实际工程应用，结合有限元分析方法和具体的软件操作过程，从工程仿真分析实例出发，详细介绍了ANSYS 18.2 WORKBENCH有限元分析软件的功能和处理各种问题的使用技巧。 本书目的为初学者提供机械工程中的CAE涉及的有限元方法的基础理论及实践知识，基于ANSYS 18.2 Workbench软件平台，学会使用商业化的有限元分析软件解决工程问题。
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How to Write a Statement of Work
1人今日阅读
Now, with this sixth edition, it is even more relevant and useful. Based on the excellent foundation laid by the late Peter Cole, Michael Martin has updated and added material to guarantee this handbook’s place in the list of “must haves” for working with government contracts.
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ANSYS Workbench有限元分析实例详解（动力学）
1人今日阅读 推荐值 91.4%
本书系统、全面地阐述了ANSYS Workbench动力学分析过程中遇到的各种问题，从工程实例出发，侧重解决ANSYS Workbench的实际操作和工程问题。 本书共分5章，第1章讲解了动力学的基本知识；第2章介绍了ANSYS Workbench的模态分析，包括普通模态、自由模态、线性摄动模态、模态拓扑、阻尼模态、子结构模态、转子模态和声场模态；第3章介绍了ANSYS Workbench的谐响应分析，包括预应力谐响应、谐响应反计算、谐响应子模型、基础激励谐响应、黏弹性材料谐响应、转子谐响应和声场谐响应；第4章介绍了ANSYS Workbench的谱分析和随机振动分析，重点讲解了基本原理以及随机振动的疲劳分析和声场的谱分析；第5章介绍了ANSYS Workbench的瞬态动力学分析，包括刚体动力学、非线性、复合材料、转子动力学和声场等相应模型。 本书工程背景深厚，内容丰富新颖，重点突出，讲解详尽，主要面向ANSYS Workbench软件的初级和中级用户，适合机械、材料、土木、能源、汽车交通、航空航天、水利水电等专业的本科生、研究生、教师、工程技术人员和CAE爱好者使用参考。
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ANSYS Workbench 2020有限元分析从入门到精通（升级版）
1人今日阅读
本书以ANSYS Workbench 2020为操作平台，详细介绍软件的功能和应用，内容丰富，涉及面广，能使读者在掌握软件操作的同时，也能掌握解决相关工程领域实际问题的思路与方法，并能自如地解决本领域所出现的问题。全书分为5部分共19章，第1部分从ANSYS Workbench 2020平台的各个功能模块着手介绍常用命令的使用以及几何建模、网格划分和后处理的相关知识；第2部分以项目范例为引导，主要讲解在Workbench平台中进行的结构静力学分析、模态分析、谐响应分析、响应谱分析、瞬态动力学分析和随机振动分析等；第3部分作为结构有限元分析的进阶部分，主要讲解在Workbench平台中进行的显示动力学分析、结构非线性分析、接触分析、线性屈曲分析等；第4部分以项目范例为引导，主要讲解在Workbench平台中进行的热力学分析、疲劳分析、流体动力学分析和结构优化分析等；第5部分主要介绍多物理场耦合分析中的电磁热耦合分析。本书工程实例丰富、讲解详尽，内容循序渐进、深入浅出，适合不同基础的读者。
1
Library Work with Children
本书为公版书，为不受著作权法限制的作家、艺术家及其它人士发布的作品，供广大读者阅读交流。汇聚授权电子版权。
A Dark Night's Work
本书为公版书，为不受著作权法限制的作家、艺术家及其它人士发布的作品，供广大读者阅读交流。汇聚授权电子版权。
We Can't Talk about That at Work!
We Need to Talk!Conversations about taboo topics happen at work every day. And if they aren’t handled effectively, they can become polarizing and divisive, impacting productivity, engagement, retention, teamwork, and even employees’ sense of safety in the workplace.
A Great Place to Work for All
From Great Place to Work, which produces the popular FORTUNE 100 Best Companies to Work For ranking, comes a new definition of what it takes to make an organization great FOR ALL--for business, people and the world.Greatness Redefined for the 21st Century
Work Breakdown Structures for Projects, Programs and Enterprices
Author Gregory T. Haugan, originator of the widely accepted 100 percent rule, offers an expanded understanding of the WBS concept, illustrating its principles and applications for planning programs as well as its use as an organizing framework at the enterprise level.
The Project Management Coaching Workbook
You will learn how to overcome the most common challenges project managers face so that you can avoid failure, get better results, and get recognized for those results. The book shows you how to get to the next level without the negative effects of stress and long hours.
Effective Work Breakdown Structures
This book offers vital new perspectives on how to apply the WBS to today's different types of projects that produce products, services or results. You'll learn how to use WBS throughout the project lifecycle to plan, control and communicate.
The Stirring of Soul in the Workplace
This deeply lyrical book offers perspective for those struggling to hear the quiet voice of the soul over the din of the contemporary workplace... Alan Briskin examines how organizations can better reflect personal and human values in the workplace.
ANSYS Workbench 17.0有限元分析从入门到精通
本书通过理论结合实践的讲解方式，全面、系统地介绍了ANSYS Workbench 17.0在有限元分析领域内的具体应用，涵盖了绝大部分用户需要使用的功能。本书按照从简单到复杂、从单场到多场分析的逻辑编排，每章均采用实例描述，内容完整且各章相对独立，是一本详细的ANSYS Workbench参考书。 全书共19章，详细介绍了创建几何模型、网格划分、结果后处理等基本操作，同时也结合工程案例详细讲解了线性静态结构分析、谐响应分析、响应谱分析、随机振动分析、瞬态动力学分析、显式动力学分析、热分析、线性屈曲分析、结构非线性分析、接触问题分析、优化设计、流体动力学分析、电磁场分析及多物理场耦合分析等。 本书工程实例丰富、讲解详尽，内容安排循序渐进、深入浅出，适合不同基础的读者。本书适合理工院校土木工程、机械工程、力学、电气工程等相关专业的本科生、研究生及教师使用，同时也可作为工程技术人员从事工程研究的参考书。
ANSYS Workbench 2020完全自学一本通
本书针对ANSYS公司的有限元分析平台Workbench 2020，详细介绍了软件的功能及应用。本书内容丰富且涉及领域较广，使读者在掌握软件操作的同时，也能掌握解决相关工程领域实际问题的思路与方法，并能自如地解决本领域所出现的问题。全书分为6篇，共26章，第1篇从有限元分析着手，讲解工程问题的数学物理方程及Workbench平台的基础应用知识；第2篇以基础范例为指导，讲解在Workbench平台中进行结构静力学分析、模态分析、谐响应分析、响应谱分析、随机振动分析及瞬态动力学分析；第3篇作为进阶部分，讲解接触分析、显式动力学分析、复合材料分析、疲劳分析及压电分析；第4篇以项目范例为指导，讲解稳态热力学分析、瞬态热力学分析、计算流体动力学分析、电场分析及磁场分析。本书配套资源中的第5篇作为高级应用篇，讲解结构优化分析、线性屈曲分析、APDL编程及声学分析等；第6篇主要讲解多物理场耦合分析，包括电磁耦合、流固耦合、振动噪声等。
The Data Science Workshop
Where there’s data, there’s insight. With so much data being generated, there is immense scope to extract meaningful information that’ll boost business productivity and profitability. By learning to convert raw data into game-changing insights, you’ll open new career paths and opportunities.The Data Science Workshop begins by introducing different types of projects and showing you how to incorporate machine learning algorithms in them. You’ll learn to select a relevant metric and even assess the performance of your model. To tune the hyperparameters of an algorithm and improve its accuracy, you’ll get hands-on with approaches such as grid search and random search.Next, you’ll learn dimensionality reduction techniques to easily handle many variables at once, before exploring how to use model ensembling techniques and create new features to enhance model performance. In a bid to help you automatically create new features that improve your model, the book demonstrates how to use the automated feature engineering tool. You’ll also understand how to use the orchestration and scheduling workflow to deploy machine learning models in batch.By the end of this book, you’ll have the skills to start working on data science projects confidently. By the end of this book, you’ll have the skills to start working on data science projects confidently.
The Unsupervised Learning Workshop
Do you find it difficult to understand how popular companies like WhatsApp and Amazon find valuable insights from large amounts of unorganized data? The Unsupervised Learning Workshop will give you the confidence to deal with cluttered and unlabeled datasets, using unsupervised algorithms in an easy and interactive manner.The book starts by introducing the most popular clustering algorithms of unsupervised learning. You'll find out how hierarchical clustering differs from k-means, along with understanding how to apply DBSCAN to highly complex and noisy data. Moving ahead, you'll use autoencoders for efficient data encoding.As you progress, you’ll use t-SNE models to extract high-dimensional information into a lower dimension for better visualization, in addition to working with topic modeling for implementing natural language processing (NLP). In later chapters, you’ll find key relationships between customers and businesses using Market Basket Analysis, before going on to use Hotspot Analysis for estimating the population density of an area.By the end of this book, you’ll be equipped with the skills you need to apply unsupervised algorithms on cluttered datasets to find useful patterns and insights.
The Data Visualization Workshop
Do you want to transform data into captivating images? Do you want to make it easy for your audience to process and understand the patterns, trends, and relationships hidden within your data?The Data Visualization Workshop will guide you through the world of data visualization and help you to unlock simple secrets for transforming data into meaningful visuals with the help of exciting exercises and activities.Starting with an introduction to data visualization, this book shows you how to first prepare raw data for visualization using NumPy and pandas operations. As you progress, you’ll use plotting techniques, such as comparison and distribution, to identify relationships and similarities between datasets. You’ll then work through practical exercises to simplify the process of creating visualizations using Python plotting libraries such as Matplotlib and Seaborn. If you’ve ever wondered how popular companies like Uber and Airbnb use geoplotlib for geographical visualizations, this book has got you covered, helping you analyze and understand the process effectively. Finally, you’ll use the Bokeh library to create dynamic visualizations that can be integrated into any web page.By the end of this workshop, you’ll have learned how to present engaging mission-critical insights by creating impactful visualizations with real-world data.
The Computer Vision Workshop
Computer Vision (CV) has become an important aspect of AI technology. From driverless cars to medical diagnostics and monitoring the health of crops to fraud detection in banking, computer vision is used across all domains to automate tasks. The Computer Vision Workshop will help you understand how computers master the art of processing digital images and videos to mimic human activities.Starting with an introduction to the OpenCV library, you’ll learn how to write your first script using basic image processing operations. You’ll then get to grips with essential image and video processing techniques such as histograms, contours, and face processing. As you progress, you’ll become familiar with advanced computer vision and deep learning concepts, such as object detection, tracking, and recognition, and finally shift your focus from 2D to 3D visualization. This CV course will enable you to experiment with camera calibration and explore both passive and active canonical 3D reconstruction methods.By the end of this book, you’ll have developed the practical skills necessary for building powerful applications to solve computer vision problems.
The Deep Learning with PyTorch Workshop
Want to get to grips with one of the most popular machine learning libraries for deep learning? The Deep Learning with PyTorch Workshop will help you do just that, jumpstarting your knowledge of using PyTorch for deep learning even if you’re starting from scratch.It's no surprise that deep learning's popularity has risen steeply in the past few years, thanks to intelligent applications such as self-driving vehicles, chatbots, and voice-activated assistants that are making our lives easier. This book will take you inside the world of deep learning, where you'll use PyTorch to understand the complexity of neural network architectures.The Deep Learning with PyTorch Workshop starts with an introduction to deep learning and its applications. You'll explore the syntax of PyTorch and learn how to define a network architecture and train a model. Next, you'll learn about three main neural network architectures - convolutional, artificial, and recurrent - and even solve real-world data problems using these networks. Later chapters will show you how to create a style transfer model to develop a new image from two images, before finally taking you through how RNNs store memory to solve key data issues.By the end of this book, you'll have mastered the essential concepts, tools, and libraries of PyTorch to develop your own deep neural networks and intelligent apps.
The C++ Workshop
You already know you want to learn C++ development, and a smarter way to learn C++ 11 is to learn by doing. The C++ Workshop focuses on building up your practical skills so that you can develop high-performance software applications or even your own independent games with effective modern C++. You'll learn from real examples that lead to real results.Throughout The C++ Workshop, you'll take an engaging step-by-step approach to understanding C++ code. You won't have to sit through any unnecessary theory. If you're short on time you can jump into a single exercise each day or spend an entire weekend learning about advanced object-oriented principles. It's your choice. Learning on your terms, you'll build up and reinforce key skills in a way that feels rewarding.Every physical print copy of The C++ Workshop unlocks access to the interactive edition. With videos detailing all exercises and activities, you'll always have a guided solution. You can also benchmark yourself against assessments, track progress, and receive content updates. You'll even earn a secure credential that you can share and verify online upon completion. It's a premium learning experience that's included with your printed copy. To redeem, follow the instructions located at the start of your C++ book.Fast-paced and direct, The C++ Workshop is the ideal companion for C++ beginners. You'll build and iterate on your code like a software developer, learning along the way. This process means that you'll find that your new skills stick, embedded as best practice. A solid foundation for the years ahead.
The Python Workshop
You already know you want to learn Python, and a smarter way to learn Python 3 is to learn by doing. The Python Workshop focuses on building up your practical skills so that you can work towards building up your machine learning skills as a data scientist, write scripts that help automate your life and save you time, or even create your own games and desktop applications. You'll learn from real examples that lead to real results.Throughout The Python Workshop, you'll take an engaging step-by-step approach to understanding Python. You won't have to sit through any unnecessary theory. If you're short on time you can jump into a single exercise each day or spend an entire weekend learning about Python scripting. It's your choice. Learning on your terms, you'll build up and reinforce key skills in a way that feels rewarding.Every physical print copy of The Python Workshop unlocks access to the interactive edition. With videos detailing all exercises and activities, you'll always have a guided solution. You can also benchmark yourself against assessments, track progress, and receive free content updates. You'll even earn a secure credential that you can share and verify online upon completion. It's a premium learning experience that's included with your printed copy. To redeem, follow the instructions located at the start of your Python book.Fast-paced and direct, The Python Workshop is the ideal companion for Python beginners. You'll build and iterate on your code like a software developer, learning along the way. This process means that you'll find that your new skills stick, embedded as best practice. A solid foundation for the years ahead.
The Ruby Workshop
You already know you want to learn Ruby, and the smarter way to learn Ruby 2.X is to learn by doing. The Ruby Workshop focuses on building up your practical skills so that you can kick-start your career as a developer and rapidly prototype applications. You'll learn from real examples that lead to real results.Throughout The Ruby Workshop, you'll take an engaging step-by-step approach to understanding the Ruby language. You won't have to sit through any unnecessary theory. If you're short on time you can jump into a single exercise each day or spend an entire weekend learning about metaprogramming. It's your choice. Learning on your terms, you'll build up and reinforce key skills in a way that feels rewarding.Every physical copy of The Ruby Workshop unlocks access to the interactive edition. With videos detailing all exercises and activities, you'll always have a guided solution. You can also benchmark yourself against assessments, track progress, and receive content updates. You'll even earn a secure credential that you can share and verify online upon completion. It's a premium learning experience that's included with your printed copy. To redeem, follow the instructions located at the start of your Ruby book.Fast-paced and direct, The Ruby Workshop is the ideal companion for Ruby beginners. You'll build and iterate on your Ruby code like a software developer, learning along the way. This process means that you'll find that your new skills stick, embedded as best practice. A solid foundation for the years ahead.
The PHP Workshop
You already know you want to learn PHP 7, and a smarter way to learn PHP development is to learn by doing. The PHP Workshop focuses on building up your practical skills so that you can develop cutting-edge, high-performance web applications. It’s ideal if you’re looking to work with an existing application, or even develop your own side project with a PHP framework like Laravel. You'll learn from real examples that lead to real results.Throughout The PHP Workshop, you'll take an engaging step-by-step approach to understanding PHP development. You won't have to sit through any unnecessary theory. If you're short on time you can jump into a single exercise each day or spend an entire weekend learning about third-party libraries. It's your choice. Learning on your terms, you'll build up and reinforce key skills in a way that feels rewarding.Every physical copy of The PHP Workshop unlocks access to the interactive edition. With videos detailing all exercises and activities, you'll always have a guided solution. You can also benchmark yourself against assessments, track progress, and receive content updates. It's a premium learning experience that's included with your printed copy. To redeem, follow the instructions located at the start of your PHP guide.Fast-paced and direct, The PHP Workshop is the ideal companion for PHP beginners. You'll build and iterate on your code like a software developer, learning along the way. This process means that you'll find that your new skills stick, embedded as best practice. A solid foundation for the years ahead.
Working with Linux：Quick Hacks for the Command Line
This book is for system administrators and developers who know the basics of Linux and want to brush up and sharpen their skills. Prior experience with Linux shell is required.
Pro Tools HD：Advanced Techniques and Workfl ows
An easy-to-follow guide for using Pro Tools HD 11 effectively.This book is ideal for anyone who already uses ProTools and wants to learn more, or is new to Pro Tools HD and wants to use it effectively in their own audio workstations.
Coal Mining Industry in Barnsley, Rotherham and Worksop
Barnsley, Rotherham and Worksop sit on top of the Midland coalfield, stretching from Nottingham into Yorkshire and the mining industry in this area once supported tens of thousands of jobs in collieri
Sheffield at Work
Sheffield has been dubbed 'Steel City' but it was and still is much more than that, and it is for much more than manufacturing metal ingots that Sheffield earned its national and international reputat
Portsmouth at Work
Portsmouth is best known for its longterm association with the Royal Navy. Its naval dockyard was at one time the world's largest employer of a civilian workforce. While there can be no dispute t
Workington Through Time
Workington is an ancient market and industrial town at the mouth of the River Derwent. Some parts of the town north of the River Derwent date back to Roman times. It was in the eighteenth century, wit
ANSYS Workbench机械工程应用精华30例
本书在介绍ANSYS Workbench基本知识的基础上，介绍了该软件的30个应用实例。这些实例基本涵盖了ANSYS Workbench在机械工程领域的应用，包括通用前处理、线性结构静力学分析、结构动力学分析、非线性分析、综合应用等五部分。学习者可以跟随本书所介绍的分析步骤和过程，快速入门。然后通过练习与操作，进一步理解这些内容。从而达到在较短时间内，即知其然，又知其所以然，真正掌握ANSYS Workbench和有限元分析方法，并能灵活应用于解决实际问题中。
ANSYS Workbench 14.0超级学习手册
《ANSYS Workbench 14.0超级学习手册》详细介绍了ANSYS公司最新版本的有限元分析平台Workbench 14.0的功能及应用。通过学习，读者不仅能掌握软件的操作，同时也能掌握解决相关工程领域实际问题的思路与方法，并能自如地解决本领域所出现的问题。全书共14章，第1章～第4章以各个分析模块为基础，介绍ANSYS Workbench 14.0的建模、网格划分、与常见CAD软件集成、结果后处理等内容。第5章～第14章以项目范例为指导，主要讲解Workbench在静力学分析、动力学分析、热力学分析、接触分析、电磁场分析、疲劳分析、复合材料分析、结构优化分析、流体动力学分析及多物理场耦合分析中的应用等内容，其中电磁分析模块(Maxwell)、疲劳分析模块(nCode)及复合材料分析模块(ANSYS ACP)需要读者单独安装。
ANSYS Workbench设计建模与虚拟仿真
本书系统地介绍了ANSYSWorkbench软件在设计建模和虚拟仿真两方面的使用方法、应用技巧和应用实例。共三大部分：第一部分详细介绍DesignModeler中的草图绘制及常用绘制工具、3D几何建模、3D高级建模、概念建模和参数化建模；第二部分详细介绍DesignSimulation基础、通用前处理和网格划分方法；第三部分详细介绍线性结构静力分析、模态分析、谐响应分析、随机响应分析、疲劳分析和结构优化设计，并在计算实例中给出了翔实的操作步骤及点明关键技术。
Complete Poetical Works
本书为公版书，为不受著作权法限制的作家、艺术家及其它人士发布的作品，供广大读者阅读交流。汇聚授权电子版权。
Work and Wealth
本书为公版书，为不受著作权法限制的作家、艺术家及其它人士发布的作品，供广大读者阅读交流。汇聚授权电子版权。