Examples of Mainly Corporate Funded Think Tanks: Brookings Institution With a budget of US$ 23 million and assets worth US$ 192 million the Brookings Institution, based in Washington D.C., in 1998 was funded by: Corporate and private donations (38 %), endowment (30 %), revenue from conferences and seminars (18 %), sales of publications (9 %), government support (2 %). Among the 138 corporate donors are: Bell Atlantic, Citibank, J.P. Morgan, Goldman Sachs, NationsBank, Exxon, Chevron, Microsoft, Hewlett Packard, Toyota, Pfizer, Johnson & Johnson, Dupont, Mobil and Lockheed Martin, and the foundations of companies like American Express, Travelers, AT&T and McDonnell Douglas. A few media conglomerates, like Time Warner and the Washington Post Co.. Contributions of individual donors include executives from Visa, Procter and Gamble, BankAmerica and U.S. Airways.

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Fair use Certain acts normally restricted by copyright may, in circumstances specified in the law, be done without the authorization of the copyright owner. Fair use may therefore be described as the privilege to use copyrighted material in a reasonable manner without the owner's consent and allows the reproduction and use of a work for limited purposes such as criticism, comment, news reporting, teaching, and research. To determine whether a use is fair or not most copyright laws consider: 1) purpose and character of the use, 2) nature of the copyrighted work, 3) amount and substantiality of the portion used, and 4) effect of the use on the potential market. Examples of activities that may be excused as fair use include: providing a quotation in a book review; distributing copies of a section of an article in class for educational purposes; and imitating a work for the purpose of parody or social commentary.

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Intellectual property Intellectual property, very generally, relates to the output that result from intellectual activity in the industrial, scientific, literary and artistic fields. Traditionally intellectual property is divided into two branches: 1) industrial property (inventions, marks, industrial designs, unfair competition and geographical indications), and 2) copyright. The protection of intellectual property is guaranteed through a variety of laws, which grant the creators of intellectual goods, and services certain time-limited rights to control the use made of their products.

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Expert system Expert systems are advanced computer programs that mimic the knowledge and reasoning capabilities of an expert in a particular discipline. Their creators strive to clone the expertise of one or several human specialists to develop a tool that can be used by the layman to solve difficult or ambiguous problems. Expert systems differ from conventional computer programs as they combine facts with rules that state relations between the facts to achieve a crude form of reasoning analogous to artificial intelligence. The three main elements of expert systems are: (1) an interface which allows interaction between the system and the user, (2) a database (also called the knowledge base) which consists of axioms and rules, and (3) the inference engine, a computer program that executes the inference-making process. The disadvantage of rule-based expert systems is that they cannot handle unanticipated events, as every condition that may be encountered must be described by a rule. They also remain limited to narrow problem domains such as troubleshooting malfunctioning equipment or medical image interpretation, but still have the advantage of being much lower in costs compared with paying an expert or a team of specialists.

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