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The initial Global Power Plant Database, an open source database of the power plants globally, was released in April 2018. [55] As of May 2021, the portal itself is still under development. Power Explorer is also supported by Google with various research partners, including KTH, Global Energy Observatory, Enipedia, and OPSD.
Database or structured data search (e.g. Dieselpoint). Mixed or enterprise search (e.g. Google Search Appliance ). The largest online directories, such as Google and Yahoo , utilize thousands of computers to process billions of website documents using web crawlers or spiders (software) , returning results for thousands of searches per second.
Users need to account for qualities and limitations of databases and search engines, especially those searching systematically for records such as in systematic reviews or meta-analyses. [2] As the distinction between a database and a search engine is unclear for these complex document retrieval systems, see:
The most widely used type of search engine is a web search engine, which searches for information on the World Wide Web. A search engine normally consists of four components, as follows: a search interface, a crawler (also known as a spider or bot), an indexer, and a database.
Web search engine submission is a process in which a webmaster submits a website directly to a search engine. While search engine submission is sometimes presented as a way to promote a website, it generally is not necessary because the major search engines use web crawlers that will eventually find most web sites on the Internet without ...
The search engine first filters search terms in several ways. An M followed by a space or hyphen has the space or hyphen removed, so that searching for Messier catalogue objects is simplified and a user input of M45, M 45 or M-45 all result in the same query being executed; similarly, NGC designations and common search terms such as Shoemaker ...
An example of NASA's environmental efforts is the NASA Sustainability Base. Additionally, the Exploration Sciences Building was awarded the LEED Gold rating in 2010. [ 254 ] On May 8, 2003, the Environmental Protection Agency recognized NASA as the first federal agency to directly use landfill gas to produce energy at one of its facilities ...
The Emissions & Generation Resource Integrated Database (eGRID) is a comprehensive source of data on the environmental characteristics of almost all electric power generated in the United States. eGRID is issued by the U.S. Environmental Protection Agency (EPA).