This post is about investment appraisal and financial analysis. These methods are explained in CSSTIAE topic 2020.56. Investment Appraisal Concepts Total cost of ownership (TCO) includes the purchase price of a particular asset, plus operating costs, over the asset’s life…
Linux OS or GNU/Linux is a family of Unix-like operating systems based on the Linux kernel and that maintain some level of compatibility. Do not confuse Linux OS or GNU/Linux with the Linux kernel. When there is a need to…
Middleware is a type of computer software program that provides services to software applications beyond those available from the operating system. The term is frequently used in the context of distributed systems. For example, when talking about cluster middleware. You…
A Unix-like OS is an operating system based on Unix. The number of process states in Unix systems is 9. List of Unix-like OS Unix-like OS families: Unix System V Unix System V was developed by AT&T. Xenix Xenix was…
Service-oriented architecture (SOA) is covered in topic 2023.58 of CSSTIAE. SOA Standards and References SOA Standards and references: The OASIS SOA Reference Model can be found on this external link. SOA Principles SOA principles: OASIS SOA Reference Model’s Service Orientation…
This post is about e-learning. A webcast is 1:n. A webinar has more interaction than webcast. Open educational resource (OER) (in Spanish REA, recursos de educación abiertos). A massive open online courses (MOOC) Triangle of e-learning Components of the e-learning…
The 2030 Agenda for sustainable development is a document issued by the United Nations. The goal of the 2030 agenda is reaching the committed sustainable development goals (SDGs) before 2030. It consists of 17 objectives with 169 goals. 17 objectives:…
Este artículo resume aspectos sobre la seguridad de la información en el sector público en España. Normas de firma electrónica en España Se regula en la ley: Ley 6/2020, de 11 de noviembre, reguladora de determinados aspectos de los servicios…
This post summarizes some examples of applications of information technology. E-commerce You can read this post about e-commerce. E-learning You can read this post about e-learning. Decision Support Systems You can read this post about decision support systems. Computer-Supported Cooperative…
The TCP/IP framework is officially known as the internet protocol suite. It was implemented before the OSI model was released, and this is why it does not follow it. TCP/IP Protocol Model There are diffeent Internet Group Management Protocol You…