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Open Source Invoicing psi-some notes on the PSI Open source Agreement

There are often users who have doubts about the PSI Open source agreement, and this article focuses on this topic.1. PSI is a dual open source protocol: GPL V3 and Apache License V2.2, the reason is the double agreement, a big factor is because ExtJS. Since PSI uses ExtJS 4.2.1 as the UI, I do not have a ExtJS commercial license, so the open source version of Ext

Open source Invoicing psi-psi How to play crowdsourcing?

Here's how I plan and current implementation of how PSI operates crowdsourcing.How to operate crowdsourcingSimply put: PSI operates crowdsourcing in the form of a virtual company.1. Crowd-pack candidatesBy Li Jingbo based on the PSI QQ group inside the staff to screen (including self-recommendation), after a separate communication, determine whether it joined

Open source Invoicing psi-psi How to play crowdsourcing (2)

The core concept of the PSI crowdsourcing model is: virtual companies. Today, I would like to talk about this plan.1, virtual company, is from the perspective of the whole community. PSI is a commercial operation from the start, so I like to think of the PSI community as a company.2, because PSI is doing commercial ope

Open source Invoicing psi-psi How to play crowdsourcing (3)

In the PSI crowdsourcing compensation scheme, you can choose the equity option. Let's talk about my understanding of the scheme.1, the choice of stock options, the workload will not be immediately paid in cash, but wait until after financing through the exit mechanism to achieve arbitrage.2, the workload reached 100 hours (equivalent compensation is 10,000 yuan), to obtain 1% of the equity. The average participant is capped by a 1% stake. The core par

Description of various PSI/SI tables in DVB-C

Abstract: combined with the psi/Si information table in a TS stream of DVB-C Cable Digital TV, this paper analyzes the PSI Information of MPEG-2 and the various tables in SI information of DVB, this gives you a clearer understanding of the functions and functions of each table. Key words: Digital TV; TS stream; PSI information; SI information; Electronic Program

Introduction to PSI/Si information and functions of digital TV

The Electronic Program Guide (EPG) is usually used in the DVB receiver to quickly find programs. The EPG data generated comes from the business information SI information in the DVB code stream. In digital TV, all the video, audio, text, pictures and so on after digital processing into the data, and according to the MPEG-2 Standard packaging, forming a fixed length (188 bytes) and then the data packets are reused to form a transmission code stream (TS). Generally, a channel corresponds to a TS s

TS Code Flow Analysis (3) PSI/SI parsing

3. psi/si Table The Psi/si table is composed of one or more child tables, which are identified by table_id, and different child tables are distinguished by table_id and table_id_extension (with the same table_id and different table_id_ extension); A child table is composed of one or more segments (with the same table_id and table_id_extension, different section_number to differentiate); Each segment consis

Open source Invoicing psi-Deployment security

TODO security issues are extensive and complex, I do not understand all of them, so this document will be constantly updated, but also hope that we have a lot of mistakes!The reason for this document is that the PSI has not been developed yet, but there are already users in the actual production environment, and asked me how to enhance security, so I began to write this document.1, the security of the database1.1 Principle 1: In a production environme

Open source Invoicing Psi-extjs knowledge points (1)

IntroductionThis series of blogs originated in the PSI QQ group where students complained that there was no comment in the JS code, so I decided to add comments. At the same time I was thinking: a lot of questions about ExtJS and not very familiar with ExtJS basic knowledge points related, so I decided to write this series of blog.Note: These knowledge points are only applied to the PSI code, not the ExtJS

Open Source Invoicing psi-why rewrite a version with Java?

Before reading this article, it's best to take a look at this: http://my.oschina.net/u/134395/blog/3824471, PSI is currently written in PHP, but I decided to get a Java version!2, one of the reasons: Just for fun! (To Linus Torvalds Salute! )3, if you simply translate the PHP code into Java code, then this fun is not cool enough, so: Java version has its own unique planning.In summary, the PSI Java version

Open source Invoicing Psi-extjs knowledge points (2)

Look at the code firstExt.define ("PSI.Sale.wsmainform ", {extend:" Ext.panel.Panel ", border:0, Layout:" Border ", Initcomponent:function () {var me = this; The following code is slightly1, the main meaning of the above code is to define a new Class:PSI.Sale.WSMainForm, the parent class is: Ext.panel.Panel2, today's new knowledge point is: initcomponentIf you want to add new components to the UI, writing code in InitComponent is a must. So in many of the Ps

Open source Invoicing psi-Planning for the UI

This topic is caused by the PSI Open source protocol, and I use this article to talk about my plan for the PSI UI.1, because at present I am an individual, has not registered the company, therefore buys ExtJS the commercial license aspect, has many troublesome things.2, PSI is a commercial project, but the business model has code open source. Therefore, after the

Conversion formula between pressure units MPA, PSI, and Bar

Conversion formula between pressure units MPA, PSI, and Bar1bar=10^5paPSI is an imperial pressure unit."lb force per square inch (1bf/in2) is 1psi=6894.76 pa; 1bar equals 10 of 5 =10^5 pa; 1ATM equals a standard atmospheric pressure =101325pa; 1at equals a project atmospheric pressure (kilogram force per square centimeter kgf/cm2) = 98066.5PA,All of the above are used in different occasions, the pressure unit can be converted to each otherOther:Consta

Conversion formula between pressure units MPa, PSI, and bar

Label: use AR Div art SP on C r BS Conversion formula between pressure units MPa, PSI, and bar 1bar = 10 ^ 5 PaPSI is an imperial pressure unit."The LBS force per square inch (1bf/in2) is 1psi = 6894.76 Pa; 1bar equals 10 to the power of 5 = 10 ^ 5 Pa; 1atm equals a standard atmospheric pressure = 101325 Pa; 1at is equal to the atmospheric pressure of a project (kgf/cm2 per square centimeter) = 98066.5,The above are the pressure units used in diffe

Open Source Invoicing psi-why rewrite a version with Java? (2)

Initially planning the Java version of PSI was a priority for the group edition, but because of the reason for the market customization project, it was first developed in the PHP version of PSI. If the Java version of the PSI is just a replica, I still think it's not fun enough. That's why we have this blog post.Read this humble blog first: http://my.oschina.net/

Psi-blast parameter explanation

A detailed introduction to Blastp/psi-blast/phi-blast Blastp/psi-blast/phi-blast is the BLAST ratio between the protein sequence and the protein sequence. 1,BLASTP: A comparison between the standard protein sequence and the protein sequence Standard protein BLAST are designed for protein searches. BLASTP is used to determine the amino acid sequence of the query to find similar sequences in the protein dat

Conversion formula between pressure units MPa, PSI, and bar

Conversion formula between pressure units MPa, PSI, and bar 1bar = 10 ^ 5 PaPSI is an imperial pressure unit."The LBS force per square inch (1bf/in2) is 1psi = 6894.76 Pa; 1bar equals 10 to the power of 5 = 10 ^ 5 Pa; 1atm equals a standard atmospheric pressure = 101325 Pa; 1at is equal to the atmospheric pressure of a project (kgf/cm2 per square centimeter) = 98066.5,The above are the pressure units used in different occasions, which can be converte

Open Invoicing psi-Mobile App development Program

PSI App Development is intended to start at the end of this year, but because of the enthusiasm of fellow students, intends to start from now on!Here is very grateful to the M students (temporarily do not release m classmate too much personal information, hey), no m students enthusiasm, all this can not be immediately implemented.1, in fact, I and M students will not be Android app development, so the first step to develop a viable development plan is

Conversion formula between pressure units MPa, PSI, and bar

Conversion formula between pressure units MPa, PSI, and bar 1bar = 10 ^ 5 PaPSI is an imperial pressure unit."The LBS force per square inch (1bf/in2) is 1psi = 6894.76 Pa; 1bar equals 10 to the power of 5 = 10 ^ 5 Pa; 1atm equals a standard atmospheric pressure = 101325 Pa; 1at is equal to the atmospheric pressure of a project (kgf/cm2 per square centimeter) = 98066.5,The above are the pressure units used in different occasions, which can be converte

Conversion formula between pressure units MPa, PSI, and bar

Conversion formula between pressure units MPa, PSI, and bar 1bar = 10 ^ 5 PaPSI is an imperial pressure unit."The LBS force per square inch (1bf/in2) is 1psi = 6894.76 Pa; 1bar equals 10 to the power of 5 = 10 ^ 5 Pa; 1atm equals a standard atmospheric pressure = 101325 Pa; 1at is equal to one project Atmospheric Pressure (kg per square centimeter kgf/cm2) = 98066.5,The above are the pressure units used in different occasions, which can be converte

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