Author: ixi

Sparse Finite-Element Matrices in MATLAB

March 1st, 2007

Creating Sparse Finite-Element Matrices in MATLAB

I’m pleased to introduce Tim Davis as this week’s guest blogger. Tim is a professor at the University of Florida, and is the author or co-author of many of our sparse matrix functions (lu, chol, much of sparse backslash, ordering methods such as amd and colamd, and other functions such as etree and symbfact). He is also the author of a recent book, Direct Methods for Sparse Linear Systems, published by SIAM, where more details of MATLAB sparse matrices are discussed ( http://www.cise.ufl.edu/~davis ).

Contents

TDD by Example con Python 3

Después de leer Test Driven Development- By Example (Addison-Wesley Signature Series) me quedo un sensación mixta de intranquilidad. Seguí los ejemplos del libro, la primera…

Después de leer Test Driven Development- By Example (Addison-Wesley Signature Series) me quedo un sensación mixta de intranquilidad. Seguí los ejemplos del libro, la primera parte usando C#; aunque el libro usa Java y la segunda parte con Python 3.1, haciendo algunas adecuaciones al código del libro. De hecho, primero lo

Search Engine Optimization (SEO)

Internet es la calle más transitada del mundo, pero el trafico en cada pagina depende principalmente del posicionamiento en los buscadores como Google. Al arte de colocarse en los primeros lugares de los listados se le conoce como Search Engine Optimization (SEO).


Google mantiene como secreto la mecánica de asignación de lugares, que además cambia de manera continúa. Es un proceso bastante errático, y los que logran colocarse en la primera pagina para la lista de búsqueda de un conjunto de palabras, tenderán a mantenerse ahí hagan lo que hagan, tengan el contenido que tengan, siempre y cuando Google no los vete, por razones también erráticas y misteriosas. Es decir, el SEO es un deporte extremo.

Referencias, recursos, y ejemplos

Blogger seo

How to track your Blogger statistics with Google:

  1. Go to Google Analytics to sign up or log in.

  2. When logged in, choose to create a new account and follow the steps.

  3. When you get to “Add Tracking“, open up a new window and log in to your Blogger account.

  4. Go to your blog’s settings and choose “Template” and then “Page Elements“

  5. Have a look at the footer (it has to be the footer!) of the design and choose to “Add a Page Element“.

  6. Find the “HTML/JavaScript” element and then “Add to blog“.

  7. Don’t write anything in the title column.

  8. Copy and paste the code from Google Analytics in the content box and “Save changes”.

  9. Then continue the steps on Google Analytics and you’re done!

Or if you are familiar with coding:

  1. From dashboard – Settings – Template – Edit HTML

  2. Scroll down to the very bottom in the box and locate the tag.

  3. Copy and past the Google code right BEFORE the tag and then save.

  4. To check your stats you just have to click “View Reports”.

  5. If it says “Tracking Unknown” in the status column, you have done something wrong.

Also, you might want to get your blog Google verified (link to tutorial for Blogger) so your blog gets crawled so your chances to show up on search results increases. Here is a tutorial for you WordPress.com users.

Animaciones

1: Motor radial de un avión

2: Distribución oval

3: Principio de la máquina de coser

4: Movimiento de Cruz de Malta – de la mano del segundero, que controla al reloj

5: Mecanismo de cambio de velocidades (automóvil)

6: Junta universal para velocidad constante automática

7: Sistema de carga de proyectiles

8: Motor giratorio – motor de combustión interna, el calor y no el movimiento del pistón, causa el movimiento giratorio

9: Motor en línea – cilindros alineados en forma paralela

ProjectLibre

Project management software has the capacity to help plan, organize, and manage resource pools and develop resource estimates. Depending on the sophistication of the software, it can manage estimation and planning, scheduling, cost control and budget management, resource allocation, collaboration software, communication, decision-making, quality management and documentation or administration systems.[1] Today, numerous PC & browser based project management softwares exist and they are finding their way into almost every type of business.

ProjectLibre

In our interview with Marc O’Brien, co-founder ofProjectLibre, we featured a tool with support for task management, resource allocation, tracking, Gantt charts, and much more. ProjectLibre is a good alternative to a commercial software product like Microsoft Project.

In December 2013, ProjectLibre released version 1.5.8, and a full rewrite of the codebase towards an Open Services Gateway Initiative (OSGI) modular architecture is ongoing. This will allow connector modules for better integration with enterprise solutions such as Enterprise Resource Planning (ERP).

ProjectLibre is a Java based client tool. During their 2014 Q1 this year, they will release version 2.0. It is not clear yet when the SaaS version will become available.

ProjectLibre was awarded InfoWorld’s “Best of Open Source” in 2013 and ranks in my personal top 3 favorite open source project management tools.

Malware increasingly uses peer-to-peer communications, researchers say

The number of malware samples that use P-to-P (peer-to-peer) communications has increased fivefold during the past 12 months, according to researchers from security firm Damballa.

The number of malware samples that use P-to-P (peer-to-peer) communications has increased fivefold during the past 12 months, according to researchers from security firm Damballa.