2.5 Measuring capacity

The basic metric unit for capacity is the litre, usually denoted by the symbol l (though sometimes an uppercase L is used to avoid confusion with the number 1).

In the SI system, units such as cubic metres (m3), cubic centimetres (cm3) and cubic millimetres (mm3) are used. These two systems are linked because:

1 ml = 1 cm3

The animation below i
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6.3 Planning stages

Having discussed the reasons to plan writing and the impact planning may have, now we need to look at planning itself and its two stages.


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Beyond Ebola: What’s Needed to Combat the Next Outbreak
A sustainable, long-term health care infrastructure is required to deal with outbreaks like the deadly Ebola virus in West Africa, says Wharton's Ezekiel J. Emanuel.
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Pay Attention to the Penguins
Think of penguins as ocean sentinels, says Dee Boersma -- they're on the frontlines of sea change. Sharing stories of penguin life and culture, she suggests that we start listening to what penguins are telling us. Dee Boersma considers penguins ocean sentinels, helping us understand the effects of pollution, overfishing and climate change on the marine environment. Run time 15:09.
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Radio Lingua Network News: 5 September 2008
The latest news from Radio Lingua including details of Coffee Break Spanish arrangements, new podcasts launched this autumn and the Radio Lingua video contest in which you can win an iPod.
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8.2 Wet etches: acids and bases

The simplest etches use a liquid solvent that converts the material into a soluble compound or a gas. Unfortunately, most materials used in micro-devices have few soluble compounds, so some very aggressive chemicals are needed to attack them. Here is a list of some of the most commonly used ones:

  • Hydrofluoric acid (chemical formula HF) is used to convert silicon dioxide into water-soluble H2SiF6 (plus some hydrogen and water). It
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בדיקה

Video link (see supported sites below). Please use the original link, not the shortcut, e.g. www.youtube.com/watch?v=abcde

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SP.2H3 Ancient Philosophy and Mathematics (MIT)
Western philosophy and theoretical mathematics were born together, and the cross-fertilization of ideas in the two disciplines was continuously acknowledged throughout antiquity. In this course, we read works of ancient Greek philosophy and mathematics, and investigate the way in which ideas of definition, reason, argument and proof, rationality and irrationality, number, quality and quantity, truth, and even the idea of an idea were shaped by the interplay of philosophic and mathematical inquir
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3.2 Some general properties of galaxies

Firstly, we note that galaxies tend to occur in clusters rather than singly. The mutual gravitational attraction of galaxies naturally tends to hold them on paths that remain close to each other. Typically a cluster contains tens or hundreds of galaxies. There are, however, large clusters with thousands of galaxies, and there are some solitary galaxies. Our own Galaxy is a member of a smallish cluster of about 36 galaxies called the Local Group (see Author(s): The Open University

3.016 Mathematics for Materials Scientists and Engineers (MIT)
This course covers the mathematical techniques necessary for understanding of materials science and engineering topics such as energetics, materials structure and symmetry, materials response to applied fields, mechanics and physics of solids and soft materials. The class uses examples from the materials science and engineering core courses (3.012 and 3.014) to introduce mathematical concepts and materials-related problem solving skills. Topics include linear algebra and orthonormal basis, eigen
Author(s): Carter, W. Craig

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USAWC celebrates Army Birthday
With a loud and thunderous, "Hooah," and a mighty, but controlled, swing of a 1902 cavalry saber replica, the U.S. Army War College cut a ceremonial cake and celebrated the Army's 237th Birthday by honoring Soldiers, veterans, and civilians and family members past and present today at the Army Heritage and Education Center.
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HMS Broadsword EAW582726

*

HMS Broadsword (F88) off Plymouth. July 1990. This Type 22 frigate of the Royal Navy was commissioned in 1979. She was sold to the Brazilian Navy in 1995. Aerofilms Collection.
© Historic England


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7.3.4 Physical vapour deposition (PVD), sputtering

An ion hitting a metal surface after acceleration through more than 100 V will not stick or bounce off but will burrow into the surface, splashing atoms outwards. This is known as sputtering and provides a versatile alternative to thermal evaporation for metal-vapour deposition: more controllable, with adjustable uniformity, able to cope with alloys and high-melting-point metals and suitable for production-line automation. Given these advantages, it is also worth the effort to heat the
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SAT Prep: Test 5, Section 7, Part 1
Students, improve your math SAT score! The instructor uses an electronic chalkboard to model problems.  This video is appropriate for high school students. Uses a textbook (the official SAT study guide) commonly found in bookstores, but it is not absolutely necessary as the narrator does all work on the screen. Problems 1-5 starting on page 669.
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Asia Week Ahead: Australia's growth set to sputter
Nov. 30 - Australia's Q3 GDP growth is likely to have slowed on weaker commodity prices, while Japan's economic gloom plays into upcoming elections.
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2.035 Special Topics in Mathematics with Applications: Linear Algebra and the Calculus of Variations
This course forms an introduction to a selection of mathematical topics that are not covered in traditional mechanical engineering curricula, such as differential geometry, integral geometry, discrete computational geometry, graph theory, optimization techniques, calculus of variations and linear algebra. The topics covered in any particular year depend on the interest of the students and instructor. Emphasis is on basic ideas and on applications in mechanical engineering. This year, the subject
Author(s): Abeyaratne, Rohan

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6.881 Representation and Modeling for Image Analysis (MIT)
Most algorithms in computer vision and image analysis can be understood in terms of two important components: a representation and a modeling/estimation algorithm. The representation defines what information is important about the objects and is used to describe them. The modeling techniques extract the information from images to instantiate the representation for the particular objects present in the scene. In this seminar, we will discuss popular representations (such as contours, level sets,
Author(s): Golland, Polina

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2.4 Homeomorphic surfaces

As we stated in Section 1, our aim is to classify surfaces up to homeomorphism. So it is worthwhile spending a little time examining what sorts of transformations of surfaces are homeomorphisms. We shall restrict the description to surfaces in space, as these are easier to deal with, though the result at the end of this subsection applies to all surfaces.

Recall that a homeomorphism between two topological spaces (such as surfaces in space) is a bijection with the property that b
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10.34 Numerical Methods Applied to Chemical Engineering (MIT)
This course focuses on the use of modern computational and mathematical techniques in chemical engineering. Starting from a discussion of linear systems as the basic computational unit in scientific computing, methods for solving sets of nonlinear algebraic equations, ordinary differential equations, and differential-algebraic (DAE) systems are presented. Probability theory and its use in physical modeling is covered, as is the statistical analysis of data and parameter estimation. The finite di
Author(s): Beers, Kenneth

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2 The role of the governing body

When performance review was first introduced, many governing bodies felt unable to undertake the role with confidence. They felt they were being asked to judge teachers and, particularly, headteachers, and were not comfortable with this.

Although the governing body is responsible for the performance management process in the school, it is not the role of the governing body to monitor the work of individual teachers. This is the task of the headteacher, or other appropriate
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