Jurnal Singkat

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https://joelhirst.wordpress.com/2016/04/23/the-suicide-of-venezuela/ The Suicide of Venezuela Posted on April 23, 2016 by Joel D. Hirst I never expected to witness the slow suicide of a country, a civilization. I suppose nobody does. Let me tell you, there’s nothing epic about it. We who have the privilege of travel often look down in satisfaction at the ruins of ancient Greece; the Parthenon lit up in blues and greens. The acropolis. The Colosseum in Rome. We walk through the dusty streets of Timbuktu and gaze in wonder at the old mud mosques as we reflect on when these places had energy and purpose. They are not sad musings, for those of us who are tourists. Time has polished over the disaster. Now all that is left are great old buildings that tell a story of when things were remarkable – not of how they quietly fell away. “There was no reason, not really,” we tell each other as we disembark our air-conditioned buses. “These things just happe...

How Kalman Filters Work, Part 1 http://www.anuncommonlab.com/articles/how-kalman-filters-work/ Intro Table of Contents Basic Architectures     Intro     The Particle Filter     The Sigma-Point Filter     Interlude: Expectation and Covariance     The Extended Kalman Filter     The Kalman Filter     Wrap-Up     Resources Getting Serious >> Useful Little Things >> Let's suppose you've agreed to a rather odd travel program, where you're going to be suddenly transported to a randomly selected country, and your job is to figure out where you end up. So, here you are in some new country, and all countries are equally likely. You make a list of places and probabilities that you're in those places (all equally likely at about 1/200 for 200 countries). Place    Probability Afghanistan    0.005 Albania    0.005 … ...

https://blog.strcpy.info/2016/04/21/building-a-portable-gsm-bts-using-bladerf-raspberry-and-yatebts-the-definitive-guide/ Building a portable GSM BTS using the Nuand bladeRF, Raspberry Pi and YateBTS (The Definitive and Step by Step Guide) I was always amazed when I read articles published by some hackers related to GSM technology. H owever , playing with GSM technologies was not cheap until the arrival of Software Defined Radios (SDRs), besides not being something easy to be implemented. A fter reading various articles related to GSM BTS, I noticed that there were a lot of inconsistent and or incomplete information related to the topic. From this, I decided to write this article, detailing and describing step by step the building process of a portable and operational GSM BTS. Before starting with the “hands on”, I would like to thank all the pioneering Hackers and Researchers who started the studies related to previously closed GSM technology. In part...