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2016ESRI杯**大学生GIS软件开发竞赛web与移动开发组特等奖,基于社会感知的酒店竞业市场分析可视化系统
软件光栅渲染器
一个基于ModBus RTU协议的PLC继电器从站
Open-source realism mod for Arma 3
ACE and TAO
《人工智能简史》人物图谱
全面的算法代码仓库
2015 ali中间件比赛项目,1. 通信模块: 涉及到了消息架构设计,每一个主题分配1-2个队列,这个是可以横向增加,考虑到了一个主题有多个消费者订阅,而且还有过滤条件,为了负载均衡,对应的队列投递消息是根据随机数对队列数取膜完成的。以上是内存队列。 2. 持久化系统:因为考虑到机器坏掉,broker不可用等等原因导致的消息丢失,就需要每次收到的消息必须及时落盘,这个就是比赛优化的重中之重。为此设计了一个小型的文件系统,借鉴阿里的rocketmq. 用一个大的日志文件,一般1G大小每个,和内存队列的结构映射到实体队列。整个日志文件是顺序文件,每条消息固定大小,里面有对应的队列号,消息号,还有长度等等。这个方便恢复消息到实体队列用的。 同步刷盘,异步刷盘,持久化必须可靠,所以一般是同步刷盘到日志文件,日志文件定时异步刷盘到实体队列,实体队列里面是索引,消息的本体在日志文件里面。为了加快大面积的写入速度,用了内存映射:内存映射文件首先将外存上的文件映射到内存中的一块连续区域,被当成一个字节数组进行处理,读写操作直接对内存进行操作,而后再将内存区域重新映射到外存文件,这就节省了中间频繁的对外存进行读写的时间,大大降低了读写时间
It's an android led HAL example based on tiny4412 board, with which you can trun on/off the led. It includes app, java system service, HAL , led driver and sequence diagram, which will benefit you in understanding the android architecture.
HT 轨迹跟踪sdk的demo
A conformant OpenGL ES implementation for Windows, Mac and Linux.
Led_tiny4412_noHardwareservice
A app to test SurfaceFlinger, for weidongshan's android video tutorial.
blzt游戏项目
天气查询汇总——vs10.2项目
遥感数据库小组项目
arcengine project
A GISystem for Wuhan University, with attribute query, route query, spatial query, theme maps
Documentation and samples for ArcGIS Python API
ArcGIS Runtime SDK for Qt (QML API) Toolkit
Arduino ESP8266 Modbus Industrial Applications modbus TCP IP and Modbus RTU
ARM board programming based on Tiny4412.
Android架构合集
收集所有区块链(BlockChain)技术开发相关资料,包括Fabric和Ethereum开发资料
:books: List of awesome university courses for learning Computer Science!
A curated list of awesome C++ (or C) frameworks, libraries, resources, and shiny things. Inspired by awesome-... stuff.
A collection of resources on FPGA devices and development in general
Awesome GIS is for collecting the GIS related sources, including cartographer tools, geoanalysis tools, developing tools, data, conference & communities, news, MOOC's course, some amazing map site, etc.
A collection of various awesome lists for hackers, pentesters and security researchers
A list of peer-to-peer resources.
A declarative, efficient, and flexible JavaScript library for building user interfaces.
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
The Web framework for perfectionists with deadlines.
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
We are working to build community through open source technology. NB: members must have two-factor auth.
Open source projects and samples from Microsoft.
Google ❤️ Open Source for everyone.
Alibaba Open Source for everyone
Data-Driven Documents codes.
China tencent open source team.