Synchronized implementation and lock upgrade

1. How does the JVM process and identify Synchronized? We analyze the implementation of synchronized from the bytecode perspective: Synchronized (lock object) {}Synchronized code blockThe underlying implementation is the monitorenter and monitorexit instructions. When modifying ordinary synchronization methods, the underlying implementation is: The execution instruction will check whether the method is set ACC_SYNCHRONIZED. If it […]

The method of equivalently converting separable convolution (Separable Convolution) to traditional convolution (Ordinary convolution) (equivalent conversion, that is, the final processing effect is the same)…

Write in front: The reason why separable convolution was proposed The status of convolutional neural networks in image processing is beyond doubt. Convolution operation has powerful feature extraction capabilities and consumes fewer parameters than full connection. It has inherent advantages when applied to two-dimensional structured data such as images. However, limited by the current hardware […]

From Forever to Forever-Microservice Framework Upgrade

Microservice framework upgrade 1 background 2 upgrade 2.1 Overview 2.2 Version upgrade list 2.3 Upgrade issues 2.3.1 spring-cloud-starter-bootstrap 2.3.2 commons-pool2 2.3.3 java: package feign.hystrix does not exist 2.3.4 spring-cloud-loadbalancer 2.3.5 Circular dependency (there will be time for further verification) 2.3.6 springfox-swagger2 2.3.7 sleuth version conflict 2.3.8 Gateways and other services can be registered to nacos […]

10. Calibration method of laser radar to external parameters of vehicle body coordinate system (lidar2car)

Directory 0. Papers and code 1. Calibration principle 2. Fitting plane 3. Calibrate roll/pitch/height 4. Calibrate yaw 4.1 Understand the vehicle heading obtained from the trajectory fitted by B_spline 5. Accuracy 0. Papers and code Reference paper: SensorX2car: Sensors-to-car calibration for autonomous driving in road scenarios Reference code: lidar2car 1. Calibration principle ① When the […]

[Computer Major Graduation Project] Hospital online appointment registration system based on Java+jsp

You can help like, collect, follow and comment Recommended subscription for wonderful columns: in the column below JAVA practical project Article directory JAVA practical projects 1. Project introduction 2. Function introduction 3. Development environment 4. Project display 5. Code display 6. Project Summary Everyone can like, collect, follow, and leave messages if you have any […]

centos7.9 upgrades kernel 3.10 to 5.4

When we build a K8S environment, the kernel version should be greater than 4.4. Check the kernel version first: uname -r [root@k8s-master ~]# uname -r 3.10.0-1160.el7.x86_64 Displayed as 3.10, check the kernel package: rpm -qa |grep kernel [root@k8s-master ~]# rpm -qa |grep kernel kernel-devel-3.10.0-1160.el7.x86_64 kernel-tools-libs-3.10.0-1160.el7.x86_64 abrt-addon-kerneloops-2.1.11-60.el7.centos.x86_64 kernel-headers-3.10.0-1160.el7.x86_64 kernel-3.10.0-1160.el7.x86_64 kernel-tools-3.10.0-1160.el7.x86_64 Add Alibaba source: cat

Graduation project Hospital appointment registration system based on JavaWeb

Project introduction: The backend uses Jsp + Servlet. The front end uses a website template from Layui. Develop an online hospital appointment registration system. From the division of roles, including users, doctors, and administrators. The functional modules include announcement release, hospital information viewing, hospital doctor information viewing, doctor appointment, case records, registration review, chart statistics […]

Graduation project springboot’s automatic course scheduling system

Development language: Java Java development tools: JDK1.8 Backend framework: SpringBoot Front-end: Vue, HTML Database: MySQL5.7 combined with Navicat management tool Server: Tomcat8.5 Development software: IDEA/Eclipse Package management tool: Maven Table of Contents 1. Project Introduction 2. System project screenshots 3.1 Front page 3.2Backend management, 3. Core code 4.1 Login related 4.2 File upload 4.3 Packaging […]

Graduation project springboot automatic course scheduling system

Development language: Java Java development tools: JDK1.8 Backend framework: SpringBoot Frontend: Vue Database: MySQL5.7 combined with Navicat management tool Server: Tomcat8.5 Development software: IDEA/Eclipse Is it a Maven project: Yes Foreword The automatic class scheduling system based on springboot has three major users: Students: Home page, teacher information, course information, announcement information, personal center, and […]

Flush Supermind Quantitative Trading Financial Analysis Modeling-Statistical Arbitrage: Using Correlation Coefficients for Paired Trading

In this article, you will learn how to use correlation coefficients to find stock targets suitable for arbitrage, write arbitrage strategies, and conduct arbitrage transactions. Part 4: Statistical Arbitrage: Using Correlation Coefficients for Pair Trading Introduction: In this article, you will learn how to use correlation coefficients to find stock targets suitable for arbitrage, write […]