The achievable accuracy for systems with multiple ADCs depends directly on the reference voltages applied to the ADCs. Medical-ultrasound-imaging systems, for example, commonly include a large number of ADCs in the system's beam-former electronics, w…

介绍 您可以让Kong代理的API使用ring-balancer,通过添加包含一个或多个目标实体的 upstream 实体进行配置,每个 target指向不同的IP地址(或主机名)和端口.ring-balancer将在各种目标之间负载,并基于上游对目标执行健康检查,使它们无论是否响应都是健康的或不健康的.然后,ring-balancer 只会将流量路由到健康的目标. Kong有两种健康检查方法,可分别或同时使用: active checks主动检查,其中定期请求目标中的特定HTTP或HTTPS端…

A method and apparatus for preserving memory ordering in a cache coherent link based interconnect in light of partial and non-coherent memory accesses is herein described. In one embodiment, partial memory accesses, such as a partial read, is impleme…

@property(nullable) CGColorRef shadowColor; /* The opacity of the shadow. Defaults to 0. Specifying a value outside the * [0,1] range will give undefined results. Animatable. */ @property float shadowOpacity; /* The shadow offset. Defaults to (0, -3)…

http://javarevisited.blogspot.sg/2014/05/10-articles-every-programmer-must-read.html Being a Java programmer and Software developer, I have learned a lot from articles titled as What Every Programmer Should Know about ..... , they tend to give a lot…

今天来讲讲iOS开发过程中的阴影绘制及其潜在的绘图性能问题.虽然在开发过程中,我们使用阴影功能的机会不是很多,但是如果用了,有可能引起如卡顿等性能问题,所以,还是有必要来探究一下阴影的绘制过程,及如何提高阴影的绘制性能. 阴影绘制 阴影可以通过设置layer层的shadowXXX属性,就可以很方便的为UIView添加阴影效果,但是不同的设置方式可能产生性能方面的问题,下面介绍一下不同方式对性能的影响. 方式一 通过设置下面的4个属性,就可以添加阴影,这种方式可能产生性能问题,因为绘制阴影而不指定…

对于嵌入式设备来说,合适的电源管理,不仅可以延长电池的寿命,而且可以省电,延长设备运行时间,在提高用户体验方面有很大的好处.所以,各个soc厂家在这方面花了很多的功夫.下面,我们可以看看linux是如何处理电源管理驱动的. 1.代码目录 drivers/regulator 2.查看目录下的Kconfig文件 menuconfig REGULATOR bool "Voltage and Current Regulator Support" help Generic Voltage and…

https://www.tutorialspoint.com/spring/spring_jdbc_framework.htm Spring - JDBC Framework Overview While working with the database using plain old JDBC, it becomes cumbersome to write unnecessary code to handle exceptions, opening and closing database…

How to install Kalibr I was confused about installing Kalibr, but there is no even one hint in README.md. I just put them in the catkin_ws, in which so many ROS packages are also there. Unsuccessfully, it can't be compiled one by one packages by the…

BACKGROUND OF THE INVENTION Conventional NAND Flash memories move data in the background to write over an entire span uniformly. The background data movement is called wear leveling. A process performing the background data movement is often referred…

转自:https://blog.csdn.net/fangwenzheng88/article/details/78457850 CollectionUtils类 /* * Copyright 2002-2014 the original author or authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in…

UI设计师有时候希望我们的产品比较酷. 阴影是他们喜欢的效果之一. 怎么设置阴影呢? 1.设置一个四边都相同的阴影 UIImageView *testImgView = [[UIImageView alloc]initWithFrame:CGRectMake(, , , )]; [testImgView setBackgroundColor:[UIColor yellowColor]]; // 阴影颜色 testImgView.layer.shadowColor = [UIColor black…

Promise 的含义 § ⇧ Promise 是异步编程的一种解决方案,比传统的解决方案——回调函数和事件——更合理和更强大.它由社区最早提出和实现,ES6 将其写进了语言标准,统一了用法,原生提供了Promise对象. 所谓Promise,简单说就是一个容器,里面保存着某个未来才会结束的事件(通常是一个异步操作)的结果.从语法上说,Promise 是一个对象,从它可以获取异步操作的消息.Promise 提供统一的 API,各种异步操作都可以用同样的方法进行处理. Promise对象有以下两个…

A data processor supports the use of multiple memory models by computer programs. At a device external to a data processor, such as a memory controller, memory transactions requests are received from the data processor. Each memory transaction reques…

Virtual addresses from multiple address spaces are translated to real addresses in main memory by generating for each virtual address an address space identifier (AID) identifying its address space. Then, the virtual address and its AID are used to o…

Handle faults that may take a variable amount of time to rectify when connecting to a remote service or resource. This pattern can improve the stability and resiliency of an application.在连接到一个远程服务或资源时,处理故障可能需要一个变量的时间来纠正.这种模式可以提高应用程序的稳定性和弹性. Context a…

8.优化 8.优化 8.1 优化概述 8.2 优化SQL语句 8.2.1 优化SELECT语句 8.2.1.1 SELECT语句的速度 8.2.1.2 WHERE子句优化 8.2.1.3 Range优化 8.2.1.4 索引合并(Index Merge)优化 8.2.1.5 引擎Pushdown条件优化 8.2.1.6 索引条件Pushdown优化 8.2.1.7 使用索引扩展 8.2.1.8 IS NULL优化 8.2.1.9 LEFT JOIN和RIGHT JOIN优化 8.2.1.10 嵌…

来源于:https://developers.google.com/web/tools/chrome-devtools/console/command-line-reference The Command Line API contains a collection of convenience functions for performing common tasks: selecting and inspecting DOM elements, displaying data in read…

1. Primitive Types        Any data types the compiler directly supports are called primitive types.        Primitive types map directly to types existing in the Framework Class Library (FCL).        For the types that are compliant with the Common La…

原文地址:https://www.linkedin.com/pulse/microservices-reference-architecture-spring-boot-cloud-anil-allewar What is "Microservices"? Microservices is the "new kid" on the block; a new paradigm that seeks to replace monolithic enterprise ap…

Multiple sequence alignment Benchmark Data set 1. 汇总: 序列比对标准数据集: http://www.drive5.com/bench/ This is a collection of multiple alignment benchmarks in a uniform format that is convenient for further analysis. All files are in FASTA format, with upper…

Reference Genome Components 1. GRCh38 is special because it has alternate contigs that represent population haplotypes. Don't know alternate contig from alternate dimension? Spend five minutes now to review terminology in our Dictionary entryReferenc…

本文转自:http://damieng.com/blog/2009/01/22/multiple-outputs-from-t4-made-easy One of the things I wanted my LINQ to SQL T4 templates to do was be able to split the output into a file-per-entity. Existing solutions used either a separate set of templates…

1. Introduction The Springfox suite of java libraries are all about automating the generation of machine and human readable specifications for JSON APIs written using the spring family of projects. Springfox works by examining an application, once, a…

链接:Canu Parameter Reference To get the most up-to-date options, run canu -options The default values below will vary based on the input data type and genome size.(根据输入数据类型和基因组大小决定默认参数) Global Options (全局参数) The catch all category. errorRate <float=0.…

C++ string 用法详解 字符串分割(C++)  C++ QUICK REFERENCE Matt Mahoney, mmahoney@cs.fit.edu DECLARATIONS enum weekend {SAT,SUN};   // weekend is a type with values SAT and SUN enum weekend day;         // day is a variable of type weekend enum weekend {SAT=0,S…

最近需要用到MySQL 5.7中的JSON,总结一下MySQL中关于JSON的内容 参考: 11.6 The JSON Data Type 12.16 JSON Functions JSON Function Reference Functions That Create JSON Values JSON_ARRAY([val[, val] ...]) 构造并返回一个JSON数组 mysql, "abc", NULL, TRUE, CURTIME()); +--------------…

mongo Shell Command History You can retrieve previous commands issued in the mongo shell with the up and down arrow keys. Command history is stored in ~/.dbshell file. See .dbshell for more information. Command Line Options The mongo shell can be sta…

原文地址:http://www.javacodegeeks.com/2013/07/spring-jta-multiple-resource-transactions-in-tomcat-with-atomikos-example.html In this tutorial we shall show you how to implement JTA multiple resource transactions in a Tomcat server, using Atomikos Transac…

reference from:https://www.voxxed.com/blog/2015/02/too-fast-too-megamorphic-what-influences-method-call-performance-in-java/ Whats this all about then? Let’s start with a short story. I proposed a change on the a Java core libs mailing list to overri…