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"Share your Knowledge. It is a Way to Achieve Immortality".---Dalai Lama XIV
अपने ज्ञान को साझा करना (शेयर), यह एक तरह से अमरत्व को प्राप्त करने जैसा है- दलाई लामा XIV (Translated By-Asheesh kamal)

Today's LIS Word

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Persistent URL (PURL)
A type of URL (Uniform Resource Locator) that does not point directly to the location of an Internet resource, but rather to an intermediate resolution service (PURL server) that associates the stable PURL with the actual URL, and returns the URL to the client, which then processes the request in the usual manner. PURLs were developed through OCLC participation in the Internet Engineering Task Force (IETF) Uniform Resource Identifier working groups as an interim solution to the problem posed by URL changes (lack of persistence) in the MARC description of Internet resources. They are an intermediate step on the path to URNs (Universal Resource Names) in Internet information architecture.

****Yesterday's LIS Word****
Information science
Information science is a field primarily concerned with the analysis, collection, classification, manipulation, storage, retrieval, movement, dissemination, and protection of information. Practitioners within and outside the field study application and usage of knowledge in organizations along with the interaction between people, organizations, and any existing information systems with the aim of creating, replacing, improving, or understanding information systems. Historically, information science is associated with computer sciencelibrary science, and telecommunications. However, information science also incorporates aspects of diverse fields such as archival sciencecognitive sciencecommercelawmuseologymanagementmathematics,  philosophypublic policy, and social sciences.
Information science should not be confused with information theory. Information theory is the study of the types of communications we use, such as verbal, signal transmission, encoding, and others. Information science deals with all the processes and techniques pertaining to the information life cycle, including capture, generation, packaging, dissemination, transformation, refining, repackaging, usage, storage, communication, protection, presentation etc. in any possible manner.

1. Stock, W.G., & Stock, M. (2013). Handbook of Information Science. Berlin, Boston, MA: De Gruyter Saur.
2. Yan, Xue-Shan (2011-07-23). Information Science: Its Past, Present and Future (PDF). doi:10.3390/info2030510.
3. "What is information theory? definition and meaning".Business 

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