HPE MSA 1060 2060 2062 Storage Arrays Best Practices MSA存储最佳实践

2.2 Cokriging模型 Cokriging 模型是上个世纪 70 年代发展起来 的一种更有效的地质统计学插值模型 [91]-[95] 。在 地质统计学领域，为了提高对某个抽样比较困难 的量的预测精度，提出了采用更容易抽样的量进 行辅助预测的 kriging 模型，称为 cokriging 模型 [92] 。2000 年，Kennedy 和 O’Hagan[96]首次将 cokriging 模型推广应用于工程科学领域，发展了 一种采用低可信度计算机程序结果，来辅助预测 高可信度计算机程序结果的 cokriging 方法。目前 国际上对 cokriging 模型的研究主要集中在地质统 计学和数学统计学等领域，在航空航天等工程科 学领域的研究也逐渐得到重视 [14][97]-[101] 。 2010 年，文献[101]独立提出了一种可用于 建立变可信度代理模型的实用 cokriging 模型（也 参见[14]）。下面对该模型进行介绍。 对于一个具有 m 个设计变量的优化问题， 在设计空间中同时采用高可信度分析（例如 NS 方程或密网格数值模拟）和低可信度分析（例如 Euler 方程或疏网格数值模拟）进行抽样，并建 立所谓的变可信度代理模型。更多建立变可信度 模型的方法请参见文献[88]。变可信度代理模型 在达到相同近似精度的条件下，可显著提高建立 代理模型的效率。 假设高、低可信度分析程序的抽样位置如下 1 1 2 2 ( )(1) T 1 1 1 ( )(1) T 2 2 2 ( ,..., ) ( ,..., )       S x x S x x   n n m n n m (40) 下标“1”和“2”分别代表高、低可信度，例如 1n 和 2n 分别代表高、低可信度样本点数（假设 2 1n n ）。相应的目标函数或约束函数的响应值 如下 1 1 2 2 ( )(1) T 1 1 1 ( )(1) T 2 2 2 [ ,..., ] , [ ,..., ] .     y y   n n n n y y y y (41) Cokriging 模型预估值定义如下 T T T 1 1 1 2 2ˆ ( )   x λ y λ y λ ySy , (42) 其中 1 2,λ λ 分别为对高、低可信度响应值的加权 系数。假设存在分别与 ,y y1 2 分别对应的 2 个 静态随机过程， ( ) ( ), ( ) ( ).       x x x x Y Z Y Z 1 1 1 2 2 2 (43) 则设计空间不同位置处，随机变量之间的协方差 和交叉协方差定义为 ( ) ( ) ( ) ( )2 (11) 11 1 1 1 ( ) ( ) ( ) ( )2 (22) 22 2 2 2 ( ) ( ) ( ) ( )(12) 1 21 2 1 2 ( ( ), ( )) ( , ) ( ( ), ( )) ( , ) ( ( ), ( )) ( , )        x x x x x x x x x x x x i j i j i j i j i j i j Cov Z Z R Cov Z Z R Cov Z Z R (44) 其中， 21 和 2 2 分别为随机过程 ( )xY1 和 ( )xY2 的过程方差。采用与 kriging 模型类似的推 导方法，可得到 cokriging 模型的预估值如下（具 体推导过程见文献[14]） T T 1 1 Sˆ ( ) ( ) ( )   x φ β r x R y Fβy ， (45) 其中 1 2 1T 1 1 T 11 S 22 1(11) (12) ( ) 2 S 1(21) (22) 2 2 ( )1 , ( ) , , ( )0 , , ,                                                r x φ β F R F F R y r r x y R R 1 0 R y F y 0 1R R      n n (46) 且有

动手的RESTful API设计模式和最佳实践 这是Packt发布的“ 的代码存储库。 设计，开发和部署高度适应性，可扩展性和安全性的RESTful Web API 这本书是关于什么的？ 本书介绍了代表性状态传输（REST）范例，该范例是一种体系结构样式，允许联网的设备通过Internet相互通信。 在本书的帮助下，您将探索面向服务的体系结构（SOA），事件驱动的体系结构（EDA）和面向资源的体系结构（ROA）的概念。 本书涵盖了为什么需要高质量的API来进行企业集成。 本书涵盖以下激动人心的功能： 探索RESTful概念，包括URI，HATEOAS和按需编码 研究无状态，分页和可发现性等核心模式 使用API​​网关优化链接微服务的端点 深入研究API身份验证，授权和API安全性实施 与服务编排一起制定复合和流程感知服务 公开用于云计算的基于RESTful协议的API 如果您觉

Many programmers code by instinct, relying on convenient habits or a "style" they picked up early on. They aren't conscious of all the choices they make, like how they format their source, the names they use for variables, or the kinds of loops they use. They're focused entirely on problems they're solving, solutions they're creating, and algorithms they're implementing. So they write code in the way that seems natural, that happens intuitively, and that feels good. But if you're serious about your profession, intuition isn't enough. Perl Best Practices author Damian Conway explains that rules, conventions, standards, and practices not only help programmers communicate and coordinate with one another, they also provide a reliable framework for thinking about problems, and a common language for expressing solutions. This is especially critical in Perl, because the language is designed to offer many ways to accomplish the same task, and consequently it supports many incompatible dialects. With a good dose of Aussie humor, Dr. Conway (familiar to many in the Perl community) offers 256 guidelines on the art of coding to help you write better Perl code--in fact, the best Perl code you possibly can. The guidelines cover code layout, naming conventions, choice of data and control structures, program decomposition, interface design and implementation, modularity, object orientation, error handling, testing, and debugging. They're designed to work together to produce code that is clear, robust, efficient, maintainable, and concise, but Dr. Conway doesn't pretend that this is the one true universal and unequivocal set of best practices. Instead, Perl Best Practices offers coherent and widely applicable suggestions based on real-world experience of how code is actually written, rather than on someone's ivory-tower theories on how software ought to be created. Most of all, Perl Best Practices offers guidelines that actually work, and that many developers around the world are already using. Much like Perl itself, these guidelines are about helping you to get your job done, without getting in the way. Praise for Perl Best Practices from Perl community members: "As a manager of a large Perl project, I'd ensure that every member of my team has a copy of Perl Best Practices on their desk, and use it as the basis for an in-house style guide." -- Randal Schwartz "There are no more excuses for writing bad Perl programs. All levels of Perl programmer will be more productive after reading this book." -- Peter Scott "Perl Best Practices will be the next big important book in the evolution of Perl. The ideas and practices Damian lays down will help bring Perl out from under the embarrassing heading of "scripting languages". Many of us have known Perl is a real programming language, worthy of all the tasks normally delegated to Java and C++. With Perl Best Practices, Damian shows specifically how and why, so everyone else can see, too." -- Andy Lester "Damian's done what many thought impossible: show how to build large, maintainable Perl applications, while still letting Perl be the powerful, expressive language that programmers have loved for years." -- Bill Odom "Finally, a means to bring lasting order to the process and product of real Perl development teams." -- Andrew Sundstrom"Perl Best Practices provides a valuable education in how to write robust, maintainable Perl, and is a definitive citation source when coaching other programmers." -- Bennett Todd "I've been teaching Perl for years, and find the same question keeps being asked: Where can I find a reference for writing reusable, maintainable Perl code? Finally I have a decent answer." -- Paul Fenwick "At last a well researched, well thought-out, comprehensive guide to Perl style. Instead of each of us developing our own, we can learn good practices from one of Perl's most prolific and experienced authors. I recommend this book to anyone who prefers getting on with the job rather than going back and fixing errors caused by syntax and poor style issues." -- Jacinta Richardson "If you care about programming in any language read this book. Even if you don't intend to follow all of the practices, thinking through your style will improve it." -- Steven Lembark "The Perl community's best author is back with another outstanding book. There has never been a comprehensive reference on high quality Perl coding and style until Perl Best Practices. This book fills a large gap in every Perl bookshelf." -- Uri Guttman

Efficient MySQL Performance Best Practices and Techniques 2021 PDF格式，好书

设计的Lumen Api起动器 :red_heart_selector: 发现了网上很多的API相关的开发规范文档，参考了很多大佬们总结的经验，决定尝试使用最新版本的Lumen（当下最新版本是Lumen 8.x）来构建一个基础功能完备，规范统一，能够快速调整实际的API项目开发启动模板。同时，也希望通过合理的架构设计调整适用于中大型项目。 稍微的依赖安装，取决于Laravel的思维进行扩展，不额外增加“负担”。 开箱即用，加速Api开发。 社区讨论传送 Lumen学习交流群：1105120693（QQ） 概览 初步支持 适应Laravel 7中新增的HttpClient客户端（已升级到Laravel 8） RESTful规范的路由定义和HTTP响应结构 使用Laravel Api资源 支持自定义业务操作应码以及业务操作描述（多语言支持，根据配置中的APP_LOCAL配置返回） Jwt-auth方式授权（支持将授权用户缓存到redis，减少用户表查询频次） 更加便捷地使用枚举/常量：方便地对枚举进行判断校正；请求中包含枚举参数可以自动转换为对应枚举实例 支持日志记录到MongoDB

ADO.NET and ADO Examples and Best Practices for VB Programmers, Second Edition brings the popular first edition up to date with fresh insights and tips on COM-based ADOand adds a voluminous section on the new ADO.NET technology. Written specifically for COM-based ADO developers retooling for ADO.NET, this is a developer's book, packed with practical advice on how to make code run faster, yet be easier to write and understand.

The book starts by comparing Vue.js with other frameworks and setting up the development environment for your application, and gradually move on to writing and styling clean, maintainable, and reusable components that can be used across your application. Further on, you'll look at common UI patterns, Vue form submission, and various modifiers such as lazy binding, number typecasting, and string trimming to create better UIs. You will also explore best practices for integrating HTTP into Vue.js applications to create an application with dynamic data. Routing is a vitally important part of any SPA, so you will focus on the Vue router and explore routing a user between multiple pages. Next, you'll also explore state management with Vuex, write testable code for your application, and create performant, server-side rendered applications with Nuxt. Towards the end, we'll look at common antipatterns to avoid, to save you from a lot of trial and error and development headaches. By the end of this book, you'll be well on your way to becoming an expert Vue developer who can leverage design patterns to efficiently architect the design of your application and write clean and maintainable code.

Vue.js 2设计模式和最佳实践 这是发布的的代码存储库。 它包含从头到尾完成本书所必需的所有支持项目文件。 关于这本书 本书首先将Vue.js与其他框架进行比较，并为您的应用程序设置开发环境。 它逐渐转向编写和样式化可在整个应用程序中使用的干净，可维护和可重用组件的样式。 接下来，您将了解常见的UI模式，Vue表单提交以及各种修饰符，例如惰性绑定，数字类型转换和字符串修整，以创建更好的UI。 您还将探索将HTTP集成到Vue.js应用程序中以创建具有动态数据的应用程序的最佳实践。 路由是任何SPA中至关重要的部分，因此您将专注于Vue路由并探索在多个页面之间路由用户。 接下来，您还将使用Vuex探索状态管理，为您的应用程序编写可测试的代码，并使用Nuxt创建高性能的服务器端渲染应用程序。 最后，我们将着眼于避免使用的常见反模式，以免您遭受大量的试错和开发难题。 到本书结尾，您将

cuda c 最佳实践 This is a manual to help developers obtain the best performance from the NVIDIA CUDA Architecture. It presents established optimization techniques and explains coding metaphors and idioms that can greatly simplify progarmming for the CUDA architecture.