SDI meaning in Space Science ?

Answer: What is Selective Dissemination of Information mean?

Selective dissemination of information ("SDI") was originally a phrase related to library and information science. SDI refers to tools and resources used to keep a user informed of new resources on specified topics, including the current-awareness services used to inform about new library acquisitions.

SDI services pre-date the world wide web, and the term itself is somewhat dated. Contemporary analogous systems for SDI services include alerts, current awareness tools or trackers. These systems provide automated searches that inform the user of the availability of new resources meeting the user's specified keywords and search parameters. Alerts can be received a number of ways, including email, RSS feeds, voice mail, Instant messaging, and text messaging.

Selective dissemination of information was a concept first described by Hans Peter Luhn of IBM in the 1950s. Software was developed in many companies and in government to provide this service in the 1950s and 60s, which allowed distribution of items recently published in abstract journals to be routed to individuals who are likely to be interested in the contents. For example, the system at Ft. Monmouth automatically sent out (by mail) a different set of abstracts to each of about 1,000 scientists and engineers in the army depending on what they were working on. The selection was based on an "interest profile," a list of keywords that described their interests. In some organizations, the 'interest profile' was much more than a simple list of keywords. Librarians or information professionals conducted extensive interviews with their clients to establish a fairly complex profile for each individual. Based on these profiles, the information professionals would then distribute selectively appropriate information to their clients. This labour-intensive operation, while initially costly, over time was made less so.A survey at the time (1970s) indicated that a large number of projects were affected by the SDI service. The software was developed by Edward Housman at the Signal Corps Laboratories Technical Information Division.

reference

Full Form	Category
Socio-Demographic Index	Academic & Science
Systemic Development Institute	Academic & Science
Semi-Directional Injection	Academic & Science
Statistics on Depository Institutions	Academic & Science
Smoke-Developed Index	Academic & Science
Saidor	Airport Code
Service Desk Institute	Associations & Organizations
Slum Dwellers International	Associations & Organizations
Spectral Diagnostics, Inc.	Business
Steel Deck Institute	Business
Steel Door Institute	Business
Scientific D.	Business
Spectral Diagnostics Incorporated	Business
SDI Ltd	Business
Spraying Devices Inc	Business
Systems Documentation Inc	Business
Security Dynamics Inc	Business
Subtitling Dubbing International	Business
Success Driven Initiatives	Business
Sea Dentist, Inc.	Business
Systems Design Inc	Business
Systems Division Inc	Business
Steel Dynamics Inc	Business
Systems Distributors Inc	Business
Standard Diversified Inc	Business
Serial Digital Interface	Chemistry
System Development Integration	Community
Seamless Development Inc	Community
Sport Development Index	Community
Skill Development Initiatives	Community
Smart Data Integration	Computing
Structured Data Interface	Computing
Serial Data Input	Computing
Single Drawing Interface	Computing
Software Distribution Network Information	Computing
Spatial Data Infrastructure	Computing
Sequential Data Set Input	Computing
Storage Device Interconnect	Computing
Serial Data Interface	Computing
Storage Device Interface	Computing
Services Device Interface	Computing
Software Defined Infrastructure	Computing
Smash Directional Influence	Computing
Standard Disk Interconnect	Computing
Standard Drive Interface	Computing
Serial Data In	Computing
Sql Debug Interface	Computing
System Deployment Image	Computing
Standard Disk Interface	Computing
Software Distribution Network Info File	File Type
Single Doc Interface	General
A Single Document Interrupt	General
Silicone Defense Implant	General
Structure Directed Initiation	General
System Dynamics International	General
Strength Deployment Inventory	General
Spiritual Directors International	General
Standard Deviation Index	General
Subsurface Drip Irrigation	General
Squirrel Defense Initiative	General
Secure Driver Interface	General
Serial Digital Interfacesdi	General
Slightly Deranged Individual	General
Shadowtech Defence Industries	General
Strategic Digital Insertion	General
Suction Diesel Injection	General
Solenoid Direct Injection	General
Saugdiesel Direct Injection	General
Standard Diesel Injection	General
Safe Direction	General
Saab Display Information	General
Stratified Diesel Injection	General
Specially Designed Instruction	General
Sterling Design Industries	General
Single Stage Driver's Airbag Inflator	General
Snappy Driver Installer	General
Sharjah Driving Institute	General
Serial Digital Interference	General
Silt Density Index	General
Samsung Digital Interface	General
Service Delivery Indicators	General
Systems Design and Implementation	General
Secondhand Dealers in Ideas	General
Saab Direct Ignition	General
Scottish Development International	Governmental
Street Drug Interdiction	Governmental
State Disability Insurance	Governmental
Sonoran Desert Institute	Governmental
Strategic Driver Information	Governmental
Semi Direct Injection	Governmental
Socialisti Democratici Italiani	Governmental
SAGARDIGHI	Indian Railway Station
Single Document Interface	Information Technology
Southern Dental Industries	Medical
Sulfadimidine	Medical
Strategic Deterrence Initiative	Military and Defence
Strategic Destruction and Infiltration	Military and Defence
Strategic Defense Initiative	Military and Defence
Saidor, Papua New Guinea	Regional
Space Development Information	Space Science
Selective Dissemination of Information	Space Science
Scuba Diving International	Sports
Saidor Airport	Transport & Travel
Stand Density Index	Trees & Plants