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Suicide bombers attack Yemen mosques - 46 dead
Worshippers at Friday prayers in two Yemen mosques are attacked by suicide bombers, leaving 46 dead. Rough Cut (no reporter narration) Subscribe: http://smarturl.it/reuterssubscribe More updates and breaking news: http://smarturl.it/BreakingNews Reuters tells the world's stories like no one else. As the largest international multimedia news provider, Reuters provides coverage around the globe and across topics including business, financial, national, and international news. For over 160 years,
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Former Singaporean PM's health deteriorates further
The health of former Singapore Prime Minister Lee Kuan Yew weakens further as his son and current Prime Minister Lee Hsien Loong visits him in hospital. Julie Noce reports. Subscribe: http://smarturl.it/reuterssubscribe More updates and breaking news: http://smarturl.it/BreakingNews Reuters tells the world's stories like no one else. As the largest international multimedia news provider, Reuters provides coverage around the globe and across topics including business, financial, national, and i
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Environmental Statistics
This lecture is given to provide common statistical skills to analyze and interpret data sets obtained in environmental science and management. Main topics are probability, hypothesis testing, multivariate analysis, time series analysis, and risk assessment. Students are required to work on exercises to acquire substantial understanding both in theory and application.
Author(s): TOKYO TECH OCW

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Learning outcomes

After studying this unit you should be able to:

  • explain what is meant by isotopes, atomic numbers and mass numbers of the atoms of chemical elements by referring to the Rutherford model of the atom;

  • give an example of how differences in the molecular structures of chemical compounds give rise to differences in macroscopic properties;

  • given a Periodic Table, point to some sets of elements with similar chemistry and to others in which there are progre
    Author(s): The Open University

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2.1.1 Probability ratios

Probability calculations are important in many branches of science, but nowhere more so than in genetics. Box 4 describes early work in the field and provides some illustrative data, based on plant-breeding experiments.

Before working with these data, it is important to understand how the results have been presented. Raw data from breeding experiments come in terms of descriptions and numbers, as with the examples given in Box 4, but results are often reported by expressing the numbers
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Acknowledgements

Don't miss out:

1. Join over 200,000 students, currently studying with The Open University [http://www.open.ac.uk/ choose/ ou/ open-content]

2. Enjoyed this? Find out more about this topic or browse all our free
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3 Risk perception

At first glance, the public response to the risk of a link between MMR and autism appears to be wildly disproportionate. From a scientific point of view, an association is unsupported by major epidemiological studies involving vast numbers of participants. Neither has evidence been presented of a plausible biological mechanism. Common sense would seem to dictate that the claim to any link simply lacks credibility and well-informed parents should behave ‘rationally’ and allow their childre
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2.1 Structure and function of the outer and middle ear

Figure 1 is a diagram of the human ear. The outer ear consists of the visible part of the ear or pinna, the external auditory canal (meatus), and the tympanic membrane (tympanum) or eardrum. The human pinna is formed primarily of cartilage and is attached to the head by muscles and ligaments. The deep central portion of the
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3.2 Preparing and drafting a Bill

The period of preparation of a Bill allows time to scrutinise evidence on the policies underlying the Bill, and to consider whether the Bill can be improved before it is introduced. Proper preparation of a Bill should lead to better-informed debate when it is introduced, and may save time by identifying problems at an early stage. This period of pre-legislative scrutiny should allow mature consideration and so help to avoid introducing laws that are unworkable.

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Introduction

This unit introduces the topic of vectors. The subject is developed without assuming you have come across it before, but the unit assumes that you have previously had a basic grounding in algebra and trigonometry, and how to use Cartesian coordinates for specifying a point in a plane.

This study unit is an adapted extract from the Open University course MST209 Mathematical methods and models, which is no longer taught by the University. If you want to study formally with us, you
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Introduction

In this unit you will see first how to convert vectors from geometric form, in terms of a magnitude and direction, to component form, and then how conversion in the opposite sense is accomplished. The ability to convert between these different forms of a vector is useful in certain problems involving displacement and velocity, as shown in Section 2, in which you will also work with bearings.

This study unit is an adapted extract from the Open University course MST121 Using mathemati
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1.6.2 Alerts

Online bookshops and some of the major search engines offer ‘Alerts’ 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 don’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
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1.4.8 Summary

In this section we have introduced you to the PROMPT checklist as a useful tool for assessing the quality of any piece of information. If you use it regularly you will find that you develop the ability to scan information quickly and identify strengths and weaknesses. As a closing exercise you might like to pick one of the websites below or any of your own choice and try to evaluate it using the PROMPT criteria. To make it easier for you we have provided a printable checklist (see below).
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1.3.9 Summary

There is a lot of information available on maths and statistics via the internet. Try the activity below to start exploring what is available.

Activity

1.3.3 Books and electronic books

Books are a good source of information. The publishing process (where a book is checked by an editor before publishing, and often reviewed by another author) means that books are reliable sources of information, although they may need to be evaluated for bias. A growing number of books can be found online.

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Evolution: artificial selection and domestication
In the 18th and 19th century evolutionary biologists, including Darwin, emphasised the similarities between natural evolution and artificial ‘ improvement’ of livestock under domestication. They believed that studying domesticated animals and plants could illuminate the mechanisms of natural evolution. First published on Fri, 13 Ma
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Managing coastal environments
Coastal environments are by their nature ever-changing. This unit looks at the example of the Blackwater Estuary in Essex, England, describing how the current state of the estuary came to be. It examines the contests and conflicts that centre on the estuary in terms of managing the environment for human needs and the needs of the other species who make their habitat there.Author(s): Creator not set

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4.2.1 Eco-efficiency = money in the bank

Business can profit from taking the environment into account (generally called eco-efficiency). Poor environmental performance is seen as a reflection of poor business practice in general. Eco-efficiency promotes the economic benefits of energy and materials savings, at the same time being first to market with new technologies or products. Since business sustainability lobbies promoted eco-efficiency in the early 1990s, the creed has gained rapid acceptance, and with good cause. There
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Acknowledgements

Except for third party materials and otherwise stated (see terms and conditions), this content is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 2.0 Licence

Grateful acknowledgement is made to the following sources for permission to reproduce mate
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1.4.1 Introduction

Up to now I have focused on the claims of the antisweatshop movement and the counter-claims of those who contest the purely negative conclusions drawn about the exploitation of another country's poor. To that end, I have, at various moments, touched on issues of demands to take responsibility: whether, for instance, responsibility for sweatshops should be divided up in some way between all those connected to the market system which gives rise to them, or placed firmly at the door of the big r
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