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Engines regulated by 40 CFR Part 86 typically include engines used in on-highway applications such as heavy-duty gasoline fueled engines (HDGEs), heavy-duty diesel fueled engines (HDDEs), and heavy-duty engines using alternate fuels (CNG, LPG and LNG). Engines regulated by 40 CFR Part 89 include compression-ignition engines used in nonroad .

clustering engines is that they do not maintain their own index of documents; similar to meta search engines [Meng et al. 2002], they take the search results from one or more publicly accessible search engines. Even the major search engines are becoming more involved in the clustering issue. Clustering by site (a form of clustering that

though, have insisted that, since the competition is 'only a click away',2 search engines will naturally endeavour to provide the best results possible. The lack of a consensus on the incentives facing search engines creates a degree of ambiguity with respect to the appropriate regulatory stance vis-à-vis search engines' provision of .

Search engines are about excitement, optimism, hope and enrichment. Search engines are also about despair and disappointment. A researcher while using search engines for resource discovery might have experienced one or the other sentiments. One may say that user satisfaction depends much upon the search strategies deployed by the user. .

early 1990s, search engines have become almost as important as email as a primary online activity. Arguably, search engines are among the most important gatekeepers in today's digitally networked environment. Thus, it does not come as a surprise that the evolution of search technology and the diffusion of search engines have been accompanied by .

Custom Search Engines Let users construct their own specialised search engines made up of an individual's own selected sites. Any searches will then return results from just those sites. Organisations are increasingly using custom search engines to select the websites they'd like to include in their search index.

(URLs), search engines are by far the most prominent means, especially for conducting initial exploration of a particular interest. Search engines create a map of the Web by indexing Web pages according to keywords. From the enormous databases these indexes generate, search engines link page content through keywords to URLs. When a user

Widely used search engines like Google, Yahoo, Bing and Ask are the most famous ones. Even though their job is the same i.e. to act as search engines and have Features related to searching, but the ways of execution is different. Semantic based search engines work on the semantics of the query.

search engines search just for information in a particular topic or category on the Web. Such search engines will have smaller and more manageable indexes and have a powerful domain-specific search interface. This paper discusses the issues in this area and gives an overview of the techniques for building specialized search engines.

Paid vs. Organic Search Search Engine Marketing (SEM) is a term used to describe the various means of marketing a website via search engines, and entails both organic search engine optimization and paid search strategies. Organic search is based on unpaid, natural rankings determined by search engine algorithms, and can be optimized

Google is most user friendly search engine proved for the Indian users which give user oriented results .In addition, most of other search engines use Google search patterns so we have concentrated on it. So, if a page is optimised in Google it is optimised for most of the search engines. Keywords: Search engine optimisation, SEO, Google

Search engine optimization is important these days as people are often using search engines to look up for products, services, and information on the Internet. While more than half on Internet traffic begins on search engines, search engine optimization has undeniably an important role in