In computer code, one may want to formulate an expression to achieve some particular purpose, such as to express some condition about the states of variables involved in the code. For example, suppose that you want to express the condition that a sequence s contains at least two members, and that the second member of s is not the space character (with ASCII code 32). This condition holds when the expression below is true.

(SIZE(s) > Int
Author(s): The Open University

By the end of this unit you should be able to:

• work with simple ratios;

• convert between fractions, decimals and percentages;

• explain the meaning of ratio, proportion and percentage;

• find percentages of different quantities;

• calculate percentage increases and decreases;

• calculate average speeds in given units and find speeds, distances and times for travel at constant speed;

• convert units;
Author(s): The Open University

Each Age Gets the Bloodshed it Needs: 20,000 years of violence [Audio]
Speaker(s): Professor Ian Morris | 20,000 years ago, the average person stood a 10-20% chance of dying violently. Today, the chance is under 1%. We have cut rates of violent death by 90% by creating large organisations that impose peace; but the main method for creating these organisations has been war. In effect, violence has slowly been putting itself out of business. The broad trends suggest that this process will probably continue. Ian Morris is Philippe Roman Chair in History and Internati
Author(s): No creator set

Online bookshops and some of the major search engines offer â€˜Alertsâ€™ services. These work by allowing you to set up a profile once you have registered on their site, and when there are items meeting your criteria you receive an email. The good thing about alerts is that you donâ€™t have to do anything once you have set up your profile. The downside, particularly with alerts services from the search engines, is that given the extent to which internet traffic is on the increase whether new
Author(s): The Open University

Differential Calculus Modeled Using Values of Cars
This video is Lesson 1 in a series of videos on Differential Calculus. In this slide show presentation the in instructor uses the values of card in regards to years to model differential calculus. Â The sound quality is not very good.
Author(s): No creator set

An intriguing aspect of dyslexia is the apparent excess of males who are affected. This could simply reflect referral bias â€“ a tendency for boys to be identified as dyslexic more readily than girls. In the past, society's expectations of boys and girls were very different with respect to educational achievement. There is now much less overt stereotyping of this kind, but there may still be other reasons why dyslexia might be more readily identified in boys. For example, eviden
Author(s): The Open University

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## Study another free course

There are more thanÂ 800 coursesÂ on OpenLearnÂ for you to choose from on a range of subjects.Â

Find out mo
Author(s): The Open University

Using virtual worlds for teaching and learning
David White gives an overview of the Open Habitat project which is investigating using virtual worlds for teaching and learning. Visit http://media.conted.ox.ac.uk/res02 to view the full presentation from David White, including his slides.
Author(s): No creator set

Although the audio file included in this unit was designed to compliment the D218 Social Policy: Welfare, Power and Diversity Open University course its contents are still relevant to anyone wishing to improve their understanding of note taking. The audio file, however, uses specific examples associated with the Social Sciences.

The audio file was recorded in 1998. John Clarke discusses the value and best ways of note taking with OU colleagues Esther Saraga and Gerry Mooney.

Author(s): The Open University

Days of the Week
Learn the Days of the Week. Preschool + Kindergarten + 1st Grade. (02:47)
Author(s): No creator set

Crecimiento y regulaciÃ³n de la poblaciÃ³n
OpenStax College
Al final de esta secciÃ³n serÃ¡s capaz de: Explicar las caracterÃ­sticas y las diferencias entre los patrones de crecimiento exponencial y logÃ­stico Dar ejemplos del [â€¦]

Author(s): No creator set

OpenStax College
Al final de este capÃ­tulo serÃ¡s capaz de: Discutir el ciclo depredador-presa Dar ejemplos de defensas en contra de depredaciÃ³n y herbivorÃ­a Describir el [â€¦]

Author(s): No creator set

21L.016 Learning from the Past: Drama, Science, Performance (MIT)
This class explores the creation (and creativity) of the modern scientific and cultural world through study of western Europe in the 17th century, the age of Descartes and Newton, Shakespeare, Milton and Ford. It compares period thinking to present-day debates about the scientific method, art, religion, and society. This team-taught, interdisciplinary subject draws on a wide range of literary, dramatic, historical, and scientific texts and images, and involves theatrical experimentation as well
Author(s): Henderson, Diana,Sonenberg, Janet

The Court of Appeal is always bound by previous decisions of the House of Lords.

The Court of Appeal generally is also bound by its own previous decisions. There are, however, a number of exceptions to this general rule. Lord Greene MR listed these exceptions in Young v Bristol Aeroplane Co. Ltd (1944).

Author(s): The Open University

A Timeless Face

00:01:20

Author(s): No creator set

This free course provided an introduction to studying People, Politics & Law. It took you through a series of exercises designed to develop your approach to study and learning at a distance and helped to improve your confidence as an independent learner.

Author(s): The Open University

Content Type:
Resource
Short Title/Course Code:
developing-skills-veteran-c
Author(s): dmalicke

Lecture 18 - 2/19/2010
Lecture 18
Author(s): No creator set

In this episode Chris Risner and Haishi Bai are joined by Mingfei Yan, a Program Manager on the Azure Media Services team.  Mingfei goes over the two options for protecting your content when using Azure Media Services: AES Clear Key and DRM.  AES Clear Key is the less secure option but prevents man-in-the-middle attacks and
Author(s): Haishi Bai, Chris Risner

Dan & Kerri's Weight Loss Surgery Story
Dan and Kerri were both dangerously overweight- with numerous health problems. Kerri was told her weight was keeping her from getting pregnant. In 2008, they decided to undergo gastric bypass surgery at the Medical University of South Carolina. Dan and Kerri discuss their journey, and Dr. Karl Byrne talks about how weight loss surgery can help those who have struggled for years to lose weight and keep it off. They got their health back, and something even better- their baby son Eli.
Author(s): No creator set