05-09-2022, 03:18 AM
Codebooks: SDA can produce both HTML. Print-format codebooks. The documentation for each study contains a full description of each variable, indexes to the variables, and links to study-level information. DDI (Data Documentation Initiative) compatibility: SDA programs can produce DDI-format metadata from SDA datasets and from other metadata formats. SDA also provides an online utility that converts DDI metadata to SDA's own metadata format (DDL). Various analysis types are available: frequencies and crosstabulation, comparison of means, correlation matrix, comparison of correlations, multiple regression, logit/probit regression. Fast results: SDA was designed to produce analysis results very quickly -- within seconds -- even for large datasets with millions of cases and thousands of variables. Although many of our users assume we are using some sort of super computer to achieve these speeds, the secret lies solely in the method of storing the data and the design of the programs. The SDA Archive on our site runs on a low-cost (Intel) Linux server -- although SDA can also be run on Windows. Lots of sites that publish regular information have their own RSS feeds, like Marshall Brain's BrainStuff weblog. The trouble with living in the Information Age is paradoxical: There's too much information. It's everywhere. How are you supposed to keep track of all the news, sports, weather and blogs you follow? Better yet, how are you going to do that and find time for work, school and family? If you're addicted to the constant flow of data that we know as the Internet, you're not going to be able to manage it without some help. One way to keep track of it all has grown very popular since its introduction in 1997: RSS. Short for Really Simple Syndication (at least now -- more on that later), RSS is a way to subscribe to a source of information, such as a Web site, and get brief updates delivered to you. When you subscribe, you'll get a feed -- often a series of headlines and brief summaries -- of all the articles published on that particular Web page. russian news
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