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Math/physics /science /grammar, ect. 29 Incredibly Useful Websites You Wish You Knew Earlier. Gmail. Smari McCarthy, making data speak. Computer Glossary, Computer Terms - Technology Definitions and Cheat Sheets from - The Tech Dictionary and IT Encyclopedia. Downloads - toolkits - a collection of tools. Estácio de Sá - DreamSpark Premium.

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Diversity index. A diversity index is a quantitative measure that reflects how many different types (such as species) there are in a dataset, and simultaneously takes into account how evenly the basic entities (such as individuals) are distributed among those types.

Diversity index

The value of a diversity index increases both when the number of types increases and when evenness increases. For a given number of types, the value of a diversity index is maximized when all types are equally abundant. True diversity (The effective number of types)[edit] Programming for Philosophers.

The links between Philosophy and Computing are both broad and deep.

Programming for Philosophers

But the two disciplines are rarely taught together, so there may be many aspiring philosophers who have never had the chance to learn programming for themselves. Listed here are a number of systems designed to enable beginners to start with programming, some of which are designed for children, and some for older users who may be keen to move on relatively quickly to "professional" systems. For those wishing to learn standard "procedural" programming, there are three Turtle Graphics Programming systems, two based on the syntax of the language Pascal, and one based on a Java-like (or C-like) syntax.

All of these systems provide an introduction not only to programming, but also to How Computers Work: compilation, machine-code, and what goes on "under the bonnet" of a dynamic programming language. GeomLab: Oops! Java is not installed! If you came here by clicking on the Big Green Arrow, then your web browser does not seem to have support for running Java applications via Java Web Start, perhaps because it does not have a recent version of Java installed.

GeomLab: Oops! Java is not installed!

Perhaps this is a false alarm, and Java Web Start is working in your browser, although we have not been able to detect it. The Magic of Computer Science. Pick a card, any card!

The Magic of Computer Science

Behind great magic there often lies some interesting maths or computer science, buried in the secret of how the trick works. Alice Support/Help / Download Alice 2_x. Alice 2.x does not require "installation" in the same way that many other software applications do.

Alice Support/Help / Download Alice 2_x

All we really need is a place on the machine's hard drive to copy files. As a result, the installation of Alice 2.x should succeed on machines where others would fail. Windows only instructions: Download and extract the files within, as you would any other compressed (.zip) file. It will create an Alice folder within which you can run the Alice application (Alice.exe). Windows 8 instructions. GameMaker: Studio. How to Design Programs. Create Your Own Online Exams, Tests, & Quizzes - Exam Professor.


BIOMETRIC AUTHENTICATION. Hadoop. Uno Rev3 [A000066] - €20.00 : Arduino Store - community and electronics. The Arduino Uno is a microcontroller board based on the ATmega328 ( datasheet ).

Uno Rev3 [A000066] - €20.00 : Arduino Store - community and electronics

It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started. The Uno differs from all preceding boards in that it does not use the FTDI USB-to-serial driver chip. Instead, it features the Atmega16U2 (Atmega8U2 up to version R2) programmed as a USB-to-serial converter. Revision 2 of the Uno board has a resistor pulling the 8U2 HWB line to ground, making it easier to put into . 1.0 pinout: added SDA and SCL pins that are near to the AREF pin and two other new pins placed near to the RESET pin, the IOREF that allow the shields to adapt to the voltage provided from the board.

Online trust and safety - TRUSTe. Wiki - Grading & Certificates of Completion.


PayPal security boss: OBLITERATE passwords from THE PLANET. High performance access to file storage PayPal has declared war on the password - and wants a better way for folks to perform open sesame on their own internet accounts.

PayPal security boss: OBLITERATE passwords from THE PLANET

Speaking at the Interop security conference in Las Vegas yesterday, Michael Barrett, chief information security officer at PayPal, talked about his work to create an open standard that could remove the need for passwords. As well as working for the online cash handler, Barrett is president of the Fast Identity Online (FIDO) Alliance, which aims to devise ways to break netizens' reliance on memorising strong passwords. During a keynote speech at Interop, Barrett said: "Our intention is to really obliterate, within a certain number of years, both passwords and PINs and see the whole internet — including internally in enterprises — obliterate user IDs and passwords and PINs from the face of the planet.


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Cloud Computing.