The United States Department of Homeland Security (DHS) is the U.S. federal executive department responsible for public security, roughly comparable to the interior or home ministries of other countries. Its stated missions involve anti-terrorism, border security, immigration and customs, cyber security, and disaster prevention and management.
The National Science Foundation (NSF) is an independent agency of the United States government that supports fundamental research and education in all the non-medical fields of science and engineering. Its medical counterpart is the National Institutes of Health. With an annual budget of about $8.3 billion, the NSF funds approximately 25% of all federally supported basic research conducted by the United States' colleges and universities. In some fields, such as mathematics, computer science, economics, and the social sciences, the NSF is the major source of federal backing. In 2016, there were 6.9 million scientists and engineers employed in the United States. The 2020 NSF budget, split per capita, amounts to $1200 per US scientist per year; hence, it is not a practical funding source for most scientists.
Search engine optimization (SEO) is the process of improving the quality and quantity of website traffic to a website or a web page from search engines. SEO targets unpaid traffic rather than direct traffic or paid traffic. Unpaid traffic may originate from different kinds of searches, including image search, video search, academic search, news search, and industry-specific vertical search engines.
A metasearch engine is an online information retrieval tool that uses the data of a web search engine to produce its own results. Metasearch engines take input from a user and immediately query search engines for results. Sufficient data is gathered, ranked, and presented to the users.
The Office of Scientific and Technical Information (OSTI) is a component of the Office of Science within the U.S. Department of Energy (DOE). The Energy Policy Act PL 109–58, Section 982, called out the responsibility of OSTI: "The Secretary, through the Office of Scientific and Technical Information, shall maintain with the Department publicly available collections of scientific and technical information resulting from research, development, demonstration, and commercial applications activities supported by the Department."
The Text REtrieval Conference (TREC) is an ongoing series of workshops focusing on a list of different information retrieval (IR) research areas, or tracks. It is co-sponsored by the National Institute of Standards and Technology (NIST) and the Intelligence Advanced Research Projects Activity, and began in 1992 as part of the TIPSTER Text program. Its purpose is to support and encourage research within the information retrieval community by providing the infrastructure necessary for large-scale evaluation of text retrieval methodologies and to increase the speed of lab-to-product transfer of technology.
Federated search retrieves information from a variety of sources via a search application built on top of one or more search engines. A user makes a single query request which is distributed to the search engines, databases or other query engines participating in the federation. The federated search then aggregates the results that are received from the search engines for presentation to the user. Federated search can be used to integrate disparate information resources within a single large organization ("enterprise") or for the entire web.
PubMed Central (PMC) is a free digital repository that archives open access full-text scholarly articles that have been published in biomedical and life sciences journals. As one of the major research databases developed by the National Center for Biotechnology Information (NCBI), PubMed Central is more than a document repository. Submissions to PMC are indexed and formatted for enhanced metadata, medical ontology, and unique identifiers which enrich the XML structured data for each article. Content within PMC can be linked to other NCBI databases and accessed via Entrez search and retrieval systems, further enhancing the public's ability to discover, read and build upon its biomedical knowledge.
A search engine is a software system that is designed to carry out web searches. They search the World Wide Web in a systematic way for particular information specified in a textual web search query. The search results are generally presented in a line of results, often referred to as search engine results pages (SERPs) The information may be a mix of links to web pages, images, videos, infographics, articles, research papers, and other types of files. Some search engines also mine data available in databases or open directories. Unlike web directories, which are maintained only by human editors, search engines also maintain real-time information by running an algorithm on a web crawler. Internet content that is not capable of being searched by a web search engine is generally described as the deep web.
Microsoft Bing is a web search engine owned and operated by Microsoft. The service has its origins in Microsoft's previous search engines: MSN Search, Windows Live Search and later Live Search. Bing provides a variety of search services, including web, video, image and map search products. It is developed using ASP.NET.
USA.gov is the official web portal of the United States federal government. It is designed to improve the public's interaction with the US government by quickly directing website visitors to the services or information they are seeking, and by inviting the public to share ideas to improve government. USA.gov links to every federal agency and to state, local, and tribal governments, and is the most comprehensive site in—and about—the US government. While the primary target audience of USA.gov is the American public, about 25 percent of USA.gov's visitors come from outside the United States.
The Scientific and Technical Information (STI) Program of the National Aeronautics and Space Administration (NASA) collects, organizes, preserves, and releases the Agency's scientific and technical information. STI is derived from NASA's research and development efforts and NASA projects, programs, and missions. The program is essential in helping NASA avoid duplication of research, by sharing information to ensure that the U.S. maintains its preeminence in aerospace-related industries and education. Examples of NASA STI include technical papers and reports, contractor reports, conference papers and proceedings, journal articles, presentations, and technical information on websites. NASA STI also includes research information from NASA's predecessor agency, the National Advisory Committee for Aeronautics (NACA), which dates back to 1915 and transitioned to NASA at the advent of the National Aeronautics and Space Act of 1958 (Amended).
WorldWideScience.org is a global science search engine designed to accelerate scientific discovery and progress by accelerating the sharing of scientific knowledge. Through a multilateral partnership, WorldWideScience.org enables anyone with internet access to launch a single-query search of national scientific databases and portals in more than 70 countries, covering all of the world's inhabited continents and over three-quarters of the world's population. From a user's perspective, WorldWideScience.org makes the databases act as if they were a unified whole.
A concept search is an automated information retrieval method that is used to search electronically stored unstructured text for information that is conceptually similar to the information provided in a search query. In other words, the ideas expressed in the information retrieved in response to a concept search query are relevant to the ideas contained in the text of the query.
USAGov en Español is the official portal of the United States Government in Spanish. It is the sister site of USA.gov, the official portal of the U.S. Government in English.
CENDI is an interagency group of senior Scientific and Technical Information (STI) managers from 14 United States federal agencies. CENDI managers cooperate by exchanging information and ideas, collaborating to address common issues, and undertaking joint initiatives. CENDI's accomplishments range from impacting federal information policy to educating a broad spectrum of stakeholders on all aspects of federal STI systems, including its value to research and the taxpayer, and to operational improvements in agency and interagency STI operations.
The Energy Citations Database (ECD) was created in 2001 in order to make scientific literature citations, and electronic documents, publicly accessible from U.S. Department of Energy (DOE), and its predecessor agencies, at no cost to the user. This database also contains all the unclassified materials from Energy Research Abstracts. Classified materials are not available to the public. ECD does include the unclassified, unlimited distribution scientific and technical reports from the Department of Energy and its predecessor agencies, the Atomic Energy Commission and the Energy Research and Development Administration. The database is usually updated twice per week.
Science Accelerator was a web-based gateway to science information including research results from the U.S. Department of Energy (DOE). The information was provided as a free public service by the DOE Office of Scientific and Technical Information (OSTI), within the Office of Science. It used federated search technology to search DOE-generated and DOE-related science information databases and collections. Federated search technology allowed the user to search multiple data sources with a single query in real time. It provided simultaneous access to "deep web" scientific databases, which were typically not searchable by commercial search engines.
The Information Bridge: Department of Energy Scientific and Technical Information database provides free public access to over 298,000 full-text electronic documents of Department of Energy (DOE) research report literature. See list of academic databases and search engines.
Yandex Search (Яндекс) is a search engine. It is owned by Yandex, based in Russia. In January 2015, Yandex Search generated 51.2% of all of the search traffic in Russia according to LiveInternet.