Linux使用指南

序常用资源清华镜像源：https://pypi.tuna.tsinghua.edu.cn/simpleNONMEM部署服务器ip：47.112.22.165常用指令查看磁盘占用情况：df ./mkdir 创建文件夹（根目录）tar -xvf 解压名为filename的压缩包到该目录下（到同名子文件夹中）mv A B 将文件夹A重命名为Brm -rf 将及file下的所有文件全部删除（如rm -rf Node/，不仅把名为Node的文件夹中的东西全部删除了，Node文件夹也被删除了）vi 在命令行中打开filename，按i进行编辑（insert），按esc退出编辑状态，接着输入:q!（不保存文件，强制退出），:w（保存文件，但不退出vi命令），:wq（保存文件并退出vi命令）系统使用文件传输从服务器上下载文件或者上传文件到远程服务器，有两种办法，一是用有图形界面的软件，如FileZilla、MobaXterm等；二是可以建立sftp连接（这种办法适用于类Unix系统，如Mac）：在Mac中打开终端，左上角点击新建连接，新建SFTP连接，命令行输入sftp 用户名@ip，输入密码，即可建

Programming · 16 天前

VLC中的常见术语

上学期组会中一次文献分享提到了VLC中的常见术语，包含了器件、技术等主题，下面对这些名词做一些解释和理解：Underwater 含义: 水下可见光通信介绍: 利用可见光在水下环境中进行数据传输技术Software Pre-Equalizer:含义: 软件预均衡器介绍: 在信号传输前对其进行处理，以减少失真PIN Array:含义: PIN 二极管阵列介绍: PIN 二极管是一种光电探测器，用于将光信号转换为电信号阵列形式可以提高接收灵敏度和覆盖范围LSC:含义: Light-to-Signal Converter（光信号转换器）介绍: 将接收到的光信号转换为电信号以供进一步处理MIMO:含义: Multiple Input Multiple Output（多输入多输出）介绍: 一种使用多个发射器和接收器来提高通信系统容量和可靠性的技术Hardware Pre-Equalizer:含义: 硬件预均衡器介绍: 在硬件层面上对信号进行预处理的设备，以减少传输过程中的失真Si-Based LED:含义: 硅基发光二极管介绍: 使用硅材料制造的LED，具有较高的效率和稳定性LED Array:含

无线光通信 · 03-18

EAWC | Listening, note-taking and summary

Listening and note-takingTips for note-taking:Don't take notes just for taking notes. Take it in an valuable and worthy way.Concentrate on important words (usually nouns, verbs, etc.) that give important information to you.Omit unimportant words.Have a consistent system for punctuation and abbreviation that will make sense to you. (It's unnecessary to make sense for others)Make the best of abbreviations, symbols and shapes.Summary writingGist: the main or essential part Summary: a comprehensive

English for academic writing and communication · 2024-11-22

EAWC | Seminar discussion and presentation

Discussion skillsEffective discussion should be:Be an attentive audienceA discussion should have a conclusion (decisions), otherwise it is an ineffective discussionTips for participating a discussion:For freshmen:ask a question so that the speaker can clarify or elaborate on a point that you don't understandask cause-and-effectFor junior students:explain that you find the speaker's opinions or points interesting and describe whybased on what the speaker had said and extend his opinion / pointspa

English for academic writing and communication · 2024-11-15

EAWC | Results, discussion, conclusion & poster presentation

Final part of paper writingSection of resultsIn this section, specific data of the work and detailed analysis of the data should be fully presented.Three moves to write results part:Provide preparatory informationDescribe the data in figures and tablesReport the results based on the dataWriting requirements for results:any data given in this section must be meaningfulpresentation of the data should be short without verbiage and be crystal claritythis section should also be well-written and shoul

English for academic writing and communication · 2024-11-08

DCN | Semi-Markovian system

M/G/1 queuing systemG means general distribution / more general situation. In this case, service time of the server has a general distribution with mean $X=E[x ]=1/\mu$ and standard deviation $\sigma_x$, where $mu$ is the mean service rate (services per second, etc.)Mean waiting time for a service request can be described by P-K formula: $$W=\frac{\lambda E[x^2]}{2(1-\rho)} $$ Using Little's Law, we can obtain the mean number of service requests in the buffer: $$N_Q=\lambda W=\frac{\lambda^2 E[x

Data communication networks · 2024-11-05

EAWC | Introduction, methods & editing

How to write a good introductionImportancemost read partdetermine the attitude of readerthe most dedicate partThe earlier you write the introduction part, the more you have to polish in the end. It's greatly suggested writing the introduction part after you finish the main body or at least the draft of your whole paper.Writing grammarTensePresent Simple/Present Continuous: this pair is used to state accepted facts and truths.Past Simple/Present Perfect: this pair is used to discuss the knowledge

English for academic writing and communication · 2024-11-01

EAWC | Paper publication process

Paper publication issuesCategories of papers:General articleTheoretical articleTechnical articleReport of significant achievementsOther kinds of articlesClassification of journals:JournalRapid communication / lettersReviewProceedingsOther technical documents: standard, patent, etc.Procedures of paper submission:In advance: Choose target journalsnecessary selection: read few published papers in this journal, it's better done before writing your paperone paper can only be submitted to one journal

English for academic writing and communication · 2024-10-25