网站简介:An exchange based in Slovenia, where users can trade between Bitcoins and US Dollars.
网站简介:Online tool for converting binary, decimal, hexadecimal and ASCII text.
网站简介:A guide for topics in elementary and AP statistics. Includes calculators, tables and a forum.
网站简介:Australia's official statistical organisation. Provides a high quality, objective, and responsive national statistical service
网站简介:News, research information, course information, syllabi, and class links.
网站简介:Provides a free online conversion tool to easily convert between different units of measurement in more than 70 categories.
网站简介:Language exchange learning via pen pals, text chat and voice chat using free lesson plans.
网站简介:Tracking progress to the future especially advanced nanotechnology, nuclear and energy technology, quantum computers, life extension, space technology and AI.
网站简介:Includes economic and general information such as retail and consumer prices and family income and expenditure data. [English/Japanese]
网站简介:Archive of experimentally-determined, biological macromolecule 3-D structures from the Brookhaven National Laboratory.
网站简介:Information about the Falcon Rocket family developed by SpaceX.
网站简介:A website containing an IQ test made of 20 questions, 5 in each page.
网站简介:Instituto Nacional de Estadística, including detailed statistical tables and general publications such as "Spain in figures".
网站简介:English-language ZAMG resources. Most of the site is in German.
网站简介:Probably the most active Austrian institution today. It has a large range of useful links for the study of Austrian economics, including hundreds of online books, a large number of working papers, access to the Quarterly Journal of Austrian Economics and the Austrian Economic Review, thousands of hours of media files, a comprehensive and themed study guide and information about seminars and scholars conferences.
网站简介:A non-profit audio project to encourage the learning of 40 languages. It contains 100 lessons that provide beginners with a basic vocabulary.
网站简介:Features a different image or photograph of our universe each day, along with a brief explanation written by a professional astronomer.
网站简介:Publisher of a wide range of peer reviewed journals in the categories; Medical Sciences, Social Sciences, Biological Sciences and Physical Sciences.
网站简介:Provides searchable database of electronic component datasheets and data books. Allows browsing and includes photographs.
网站简介:Includes links to scientific divisions, research institutes, and journals.
网站简介:INFORMS represents professionals in the fields of operations research and the management sciences (OR/MS), and in related fields such as information technology.
网站简介:Website of the Federal Reserve, with news, speeches and testimony and other resources.
网站简介:Offers news, background information, a database for military systems and equipment used, multimedia, photo gallery and links to other government and military departments.
网站简介:ASTM develops technical standards for industry worldwide.
网站简介:Describes current reports and special services available, seismological work, and the history and structure of the organization.