Just when you thought you’d heard, read and seen absolutely everything there is to about QR codes, along comes this little story to make you sputter in your corn flakes. Earlier this month, the craft-store chain Michael’s was hit with a lawsuit for the use of QR codes in its circulars by QR code company Neomedia, according to 2DCode.com. Um…and …

Part 1 of 2: "The Road to Superintelligence". Artificial Intelligence — the topic everyone in the world should be talking about.

script is an open source tool that makes a typescript of everything displayed on your terminal. It is useful for students who need a hardcopy record of an interactive session as proof of an assignment, as the typescript file can be printed out later with lpr.

Everything between the script and the exit command is logged to the file. This includes the confirmation messages from script itself (unless the -q flag is used). Everything between the script and the exit command is logged to the file. This includes the confirmation messages from script itself.

Recorded shell sessions can be shared using online services. The advantage of sessions recorded in this format from the usual screencasts is that shell instructions can be easily copy/pasted from the player screen.

Useful command:

script --timing=time.txt script.log

and to replay

scriptreplay --timing=time.txt script.log

See also the nice -d (divisor, speeds up playback) and -m (max delay in playback) options for replay.

Summary

1. ttystudio - Excellent terminal-to-gif recorder
2. asciinema - Record and share terminal sessions
3. Shelr - Broadcast plain text screencasts
4. Showterm - Terminal record and upload utility
5. TermRecord - Terminal session recorder with easy-to-share self-contained HTML output
6. ttyrec - Terminal recorder, incudes a playback tool
7. IPBT - High-tec terminal player
8. tty2gif - Record scripts into both binary and gif formats
9. termrec - Set of tools for recording and replaying tty sessions
10. script - The granddaddy of terminal recorders

An extremely simple, pluggable static site generator.

Moto Mods are accessories made for the Motorola Moto Z phone.
They can be plugged onto the Moto Z and can be equipped with custom sensors and electronics, to expand the capabilities of the phone.

Just draw the symbol you are looking for into the square area above and look what happens!

IoT is considered as one of the key enabling technologies for the fourth industrial revolution, that is known as Industry 4.0. In this paper, we consider the mechatronic component as the lowest level in the system composition hierarchy that tightly integrates mechanics with the electronics and software required to convert the mechanics to intelligent (smart) object offering well defined services to its environment. For this mechatronic component to be integrated in the IoT- based industrial automation environment, a software layer is required on top of it to convert its conventional interface to an IoT compliant one. This layer, that we call IoTwrapper, transforms the conventional mechatronic component to an Industrial Automation Thing (IAT). The IAT is the key element of an IoT model specifically developed in the context of this work for the manufacturing domain. The model is compared to existing IoT models and its main differences are discussed. A model-to-model transformer is presented to automatically transform the legacy mechatronic component to an IAT ready to be integrated in the IoT-based industrial automation environment. The UML4IoT profile is used in the form of a Domain Specific Modeling Language to automate this transformation. A prototype implementation of an In dustrial Automation Thing using C and the Contiki operating system demonstrates the effectiveness of the proposed approach.

Nice representation of Collatz's sequence.

How to understand whether you know what a flowchart is.

Recording a terminal session may be important in helping someone learn a process, sharing information in an understandable way, and also presenting a series of commands in a proper manner. Whatever the purpose, there are many times when copy-pasting text from the terminal won't be very helpful while capturing a video of the process is quite far-fetched and may not be always possible. In this quick guide, we will take a look at the easiest way to record and share a terminal session in .gif format.

In this paper, we consider multi-pursuer single-superior-evader pursuit-evasion differential games where the evader has a speed that is similar to or higher than the speed of each pursuer. A new fuzzy reinforcement learning algorithm is proposed in this work. The proposed algorithm uses the well-known Apollonius circle mechanism to define the capture region of the learning pursuer based on its location and the location of the superior evader. The proposed algorithm uses the Apollonius circle with a developed formation control approach in the tuning mechanism of the fuzzy logic controller (FLC) of the learning pursuer so that one or some of the learning pursuers can capture the superior evader. The formation control mechanism used by the proposed algorithm guarantees that the pursuers are distributed around the superior evader in order to avoid collision between pursuers. The formation control mechanism used by the proposed algorithm also makes the Apollonius circles of each two adjacent pursuers intersect or be at least tangent to each other so that the capture of the superior evader can occur. The proposed algorithm is a decentralized algorithm as no communication among the pursuers is required. The only information the proposed algorithm requires is the position and the speed of the superior evader. The proposed algorithm is used to learn different multi-pursuer single-superior-evader pursuit-evasion differential games. The simulation results show the effectiveness of the proposed algorithm.

A Learning Invader for the “Guarding a Territory” Game
A Reinforcement Learning Problem

This paper explores the use of a learning algorithm in the “guarding a territory” game. The game occurs in continuous time, where a single learning invader tries to get as close as possible to a territory before being captured by a guard. Previous research has approached the problem by letting only the guard learn. We will examine the other possibility of the game, in which only the invader is going to learn. Furthermore, in our case the guard is superior (faster) to the invader. We will also consider using models with non-holonomic constraints. A control system is designed and optimized for the invader to play the game and reach Nash Equilibrium. The paper shows how the learning system is able to adapt itself. The system’s performance is evaluated through different simulations and compared to the Nash Equilibrium. Experiments with real robots were conducted and verified our simulations in a real-life environment. Our results show that our learning invader behaved rationally in different circumstances.

GNU TeXmacs is a free wysiwyw (what you see is what you want) editing platform with special features for scientists. The software aims to provide a unified and user friendly framework for editing structured documents with different types of content (text, graphics, mathematics, interactive content, etc.). The rendering engine uses high-quality typesetting algorithms so as to produce professionally looking documents, which can either be printed out or presented from a laptop.

An Inkscape plugin that allows to organize a set of slides on top of Inkscape layers.
The plugin allows to export the slides as a pdf file composed by several pages, each one corresponding to one slide.