Internet Search Engines - Search Engine Guide Blog Search Engines Directory Internet search engines are categorized by topic in our searchable directory of general and specialty search engines. Also listed are resources and tools for exploring the deep web, performing advanced research, and for learning about using search engine tools and technology. Find topical search engines by category. Add Site Search Engine Tools & Technology Search Engine Software There are three types of search engine software covered on this page.
Google Scholar Naslagwerken List of academic databases and search engines From Wikipedia, the free encyclopedia This article contains a representative list of notable databases and search engines useful in an academic setting for finding and accessing articles in academic journals, institutional repositories, archives, or other collections of scientific and other articles. Databases and search engines differ substantially in terms of coverage and retrieval qualities.[1] 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 general list of search engines for all-purpose search engines that can be used for academic purposesthe article about bibliographic databases for information about databases giving bibliographic information about finding books and journal articles. Operating services[edit] [edit] [edit]
Deep Web FAQ Click on these links to learn more about the Deep Web. The Deep Web is content that resides in searchable databases, the results from which can only be discovered by a direct query. Without the directed query, the database does not publish the result. Search engines — the primary means for finding information on the "surface" Web — obtain their listings in two ways. Thus, to be discovered, "surface" Web pages must be static and linked to other pages. The is a research, information sharing and management tool for organizations that accesses tens of thousands of Deep Web databases and Internet search engines. In the earliest days of the Web, there were relatively few documents and sites. What has not been broadly recognized is that information is now being published in a different means on the Web, especially for larger sites or for traditional information providers now moving their content online. As early as 1994, Dr. All of these sources can contribute to Deep Internet content.
Acute geneeskunde 100 Search Engines For Academic Research Bestseller All Video On Demand: Rent or Buy Clothing & Accessories Major Appliances Arts, Crafts & Sewing Automotive Baby & Nursery Beauty & Grooming Books & Textbooks Collectible Coins Camera & Photo Cell Phones & Accessories Classical Music Computers, Tablets & Components Blu-Ray & DVD Electronic Components & Home Audio Entertainment Collectibles Video Games Other Gift Card Brands Grocery & Gourmet Food Patio, Lawn & Garden Health & Household Business & Industrial Supplies Jewelry Kindle Store Kitchen & Dining Magazines Miscellaneous Digital Music CDs & Vinyl Musical Instruments Office & School Supplies Pet Food & Supplies Shoes, Handbags, Wallets, Sunglasses Software Sports Collectibles Sports & Fitness Home Improvement Toys & Games Watches by TeachThught Staff General Need to get started with a more broad search? ResearchGate Access over 135 million publication pages and stay up to date with what’s happening in most professional fields. RefSeek Digital Library of the Commons Repository Microsoft Academic Search Google Trends Jurn
boeken EBIB 7/2004 (58) - N. Pamuła-Cieślak: Ukryty Internet – jeśli nie wyszukiwarka, to co? Terminologia i zawartość Ukryty Internet (ang. Invisible Web) to termin, który jest niezwykle trudny do zdefiniowania. Nie jest to bowiem żaden konkretny twór, nie ma również specyficznej lokalizacji w globalnej sieci. Jednakże termin ten pojawił się w literaturze i Internecie właśnie dlatego, że w praktyce wyszukiwania informacji okazało się, iż strony, które są wyszukiwalne przez wyszukiwarki internetowe, stanowią zaledwie jedną pięćsetną całkowitych zasobów Internetu. Definiuje się Ukryty Internet jako strony tekstowe, pliki lub inne, zwykle bardzo wartościowe merytorycznie, informacje dostępne poprzez sieć WWW, których nie indeksują i nie wyszukują wyszukiwarki internetowe (ang. public search engines). Dlaczego istnieje Ukryty Internet? Przyczyn jest kilka, a większość z nich wiąże się z budową mechanizmów wyszukująco-indeksujących w wyszukiwarkach internetowych. Strategie wyszukiwania w Ukrytym Internecie Bibliografia: 1. 2. 3.