In addition to full ASCII text, some documents, such as the Constitution and Declaration of Independence, are available as scanned images of the original manuscripts. A , plus Roget's Thesaurus, and links to a number of other dictionary sites on the web. Directory of Open Access Journals This service covers free, full text, quality controlled scientific and scholarly journals. We aim to cover all subjects and languages. Covers nearly , articles in searchable journals.
Energy Citations Database Free access to over 2. Department of Energy DOE. ECD includes scientific and technical research results in disciplines of interest to DOE such as chemistry, physics, materials, environmental science, geology, engineering, mathematics, climatology, oceanography, computer science and related disciplines.
It includes bibliographic citations to report literature, conference papers, journal articles, books, dissertations, and patents. The ballads were collected by Samuel Pepys into five albums, which are held at Magdalene College, Cambridge. The ballads in the database are accessible as facsimiles, as facsimile transcriptions, and as recorded songs.
Espacenet European Patent Office The European Patent Office's Esp acenet provides detailed searching of EPO and PCT patent applications for the last 24 months, and worldwide patent documents searchable by patent number as early as for some issuing nations.
Google Scholar Google Scholar enables you to search specifically for scholarly literature, including peer-reviewed papers, theses, books, preprints, abstracts and technical reports from all broad areas of research.
Use Google Scholar to find articles from a wide variety of academic publishers, professional societies, preprint repositories and universities, as well as scholarly articles available across the web.
Govinfo From the U. Government Printing Office: provides free electronic access to a wealth of important information products produced by the Federal Government. The information provided on this site is the official, published version. Hearth Hearth is a core electronic collection of books and journals in Home Economics and related disciplines. Titles published between and were selected and ranked by teams of scholars for their great historical importance.
The first phase of this project focused on books published between and and a small number of journals. Future phases of the project will include books published between and , as well as additional journals. The full text of these materials, as well as bibliographies and essays on the wide array of subjects relating to Home Economics, are all freely accessible on this site.
InfoPlease Search the Information Please almanac and timeline, their atlas, the Columbia Encyclopedia, a dictionary, and a thesaurus. Information Please has been providing authoritative answers to all kinds of factual questions since Internet Archive The Internet Archive is a c 3 public nonprofit that was founded to build an 'Internet library,' with the purpose of offering permanent access for researchers, historians, and scholars to historical collections that exist in digital format.
Founded in and located in the Presidio of San Francisco, the Archive has been receiving data donations from Alexa Internet and others. In late , the organization started to grow to build more well-rounded collections. Among its most notable collections are: Audio Archive The Archive contains over a hundred thousand free digital recordings ranging from alternative news programming, to Grateful Dead concerts, to Old Time Radio shows, to book and poetry readings, to original music uploaded by our users.
PostgreSQL is an enterprise-class open source database management system. It is backed by an experienced community of developers who have made a tremendous contribution to make it highly reliable Database management software. Verdict: PostgreSQL enables you to create custom data types and range of query methods. You can run a store procedure in different programming languages. It is an open source database which came into light around the mids. It is one of the best free database that falls under the category of a NoSQL database.
Verdict: MongoDB allows you to validate the document. It is not suitable for those applications having complex transactions. OrientDB is an open-source NoSQL multi-model database which helps organizations to unlock the power of graph databases without deploying multiple systems to handle other data types. This helps you to increase performance and security while supporting scalability. Verdict: OrientDB has the ability to do multi-master replication, shared data using clusters, and automate distributed queries and transactions.
It is created by its original developers. This DBMS tool provides data processing capabilities for both small and enterprise tasks. It provides high scalability through easy integration. SQLite is an open-source, embedded, relational database management system, designed circa It is a database, with zero configuration, no requirements of a server or installation.
Despite its simplicity, it is laden with popular features of database management systems. Cassandra is a free tool which is designed to manage a large amount of data across a wide range of servers. The tool offers support for replicating across multiple datacenters. NLM Data. Data designed for medical image segmentation and registration algorithm evaluation. The father of internet data archives for all forms of machine learning.
Stanford AI in Medicine Database. Computer Vision Online Image Archive. Large listing of multiple databases in computer vision and biomedical imaging. Provides a list of available databases, many of which are also listed here. Large collection with normal and abnormal findings and ground truth. Digital images and expert segmentations of retinal vessels.
Digital Chest X-ray images with lung nodule locations, ground truth, and controls. Digital Chest X-ray images with segmentations of lung fields, heart, and clavicles.
Well documented chest CT images. Mammographic images and markup. Digital retinal images for detecting and quantifying diabetic retinopathy.
SpineWeb is an online collaborative platform for everyone interested in research on spinal imaging and image analysis. MR data of Hips, knees and other sites affected by osteoarthritis. MR pediatric repository. MR brain. NIH-funded datasets. Collection of files intended for 3D printing, but includes volumetric medical scans i. For example, see. Data for registration method development and evaluation:. Simulated and phantom data available for public use:.
Simulated brain MR database. Generated Photos. Free AI-generated photos for academic research.
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