This section contains nine (9) questions of ten (10) marks, each to be answered in
about fifty (50) words.
about fifty (50) words.
1. What is Pilot study
2. Trade Bibliography
3. User Studies
4. Difference between search engine and Meta search engine
5. Different between AND and OR as Boolean Operation
6. Difference between CAS & SDI Service
7. Need of continuing education programmes in LIS.
8. Library Consortium
9. Cost-effective analysis
7 comments:
4. Deference Between Search Engine and Meta-Search Engine ?
Ans:
Search Engines have a system of algorithms that works on crawling the information written in the body of the HTML.
Meta search engines have a system of algorithms that crawls the meta tags, meta title and meta description of the HTML
Examples for meta search engines are megaspider.com , metaspider.com , clasearch.com
Examples for search engines are Google.com , Bing.com , Avasearch.com, Yahoo.com
You also have meta-search engines for a number of specialist subjects such as navigatejob.com which is a job search engine.
4. Difference between Search Engine and Meta- Search Engine?
I think search engines could also read the meta tag or metadata written in HTML...
Meta search engines uses the searches indexed in search engines and do not have system crawler to crawl through the web but they crawl to the search results fetched search engines..
Meta search engine is more likely to an aggregator as when we submit any keyword or query to a meta search engine, it forwards the same to several search engines, to which it supports, and aggregates the search result of those search engines and display as a single list as their resources. Some search engines also show that from where they have got the link or search result.
For example: If you submit any query to Dogpile it will clearly indicate in the result that from which search engine it has fetched the result...
Thus search engines are web crawlers that crawl through the web and indexes the web while a meta search engine is an aggregator which aggregate the results of several search engines and display those results as a single list...
Cost-effective analysis
Cost-effectiveness analysis (CEA) is a technique for selecting among competing wants wherever resources are limited. Developed in the military, CEA was introduced with enthusiasm to clinicians by Weinstein and Stason in 1977
Cost-Effectiveness Ratio
The cost-effectiveness ratio is simply the sum of all benefits divided by the sum of all costs. This is comparable to a return on investment calculation; however, the benefits are not measured in terms of just dollars, but in a ratio that incorporates both health outcomes and dollars. Since healthier employees are more productive, improved outcomes actually do translate into dollars. But it is important to keep these values separate, so a decision maker can understand what kind of health benefit is returned on the investment.
All benefits
Cost-Effective Ratio = All Cost/All Cost
3. User Studies
The ultimate goal of any information centre is to provide required information to an user within the reasonable time and cost frame. Hence we have to understand variety of users and their information need. If the library has to justify its existence and to serve its purpose, it is essential to study and assess the needs of information of users systematically.
Types of Users studies
1. Behavior studies:
The studies and the surveys which are conducted to find out the pattern to overall interaction of the user’s community with the communication system, without reference to any specific information receiving event, are called communication behavior studies. Perhaps the most comprehensive study of communication was a survey conducted by the Operations Research Group of the Case Institute of Technology in 1958.
2. Use studies:
In the second category those surveys and studies are placed which are conducted to find out the use of any communication medium, such as a primary periodical, a secondary periodical etc. In this a large number of surveys have been conducted to find out the relative use of different channels in response to questions like, where would you search for information? Or how did you find the reference?
3. Information flow studies:
The third category includes surveys which are conducted to find out the pattern of flow of information in the communication system. Information flow studies have been made from different points of view. Some excellent studies had been made by Garvey and Griffithe regarding the communication system in the field of Psychology. There appears to be a surprising degree sequence in the system and their findings seem to hold good for the entire science communication system.
1. What is Pilot study?
A pilot study is a preliminary trial of research which is essential to the development of an extensive training programme. In a pilot study the entire training programme is carried out but with fewer participants that would be used for an extensive training programme.
Benefits of Pilot Study:
1. It permits preliminary testing of the hypotheses that leads to testing more precise hypotheses in the main study.
2. It often provides the researcher with ideas, approaches, and clues you may not have foreseen before conducting the pilot study.
3. It permits a thorough check of the planned statistical and analytical procedures, giving you a chance to evaluate their usefulness for the data.
4. It can greatly reduce the number of unanticipated problems.
5. It may save a lot of time and money. The pilot study almost always provides enough data for the researcher to decide whether to go ahead with the main study.
6. In the pilot study, the researcher may try out a number of alternative measures and then select those that produce the clearest results for the main study.
6. Difference between CAS & SDI Service
Differentiate between CAS and SDI?
1. CAS is an independent service
SDI is one of the kinds of CAS
2. The existence of CAS is most ancient since long time 16the century)
Whereas SDI was designed very recently by H.P.Luhan
3. CAS is a common service and is provided to all users of the library
SDI is personalized service and is provided on personal basis in the library
4. The organisation of CAS is done by keeping in mind the all users of the library
Whereas SDI is organized on the of information needs of a particular users of the library
5. To provide CAS, a list of current periodicals is circulated among all the users of the library
In SDI, the service is provided by matching the preapared use profile with the document profile
6. In this service, the emphasis is given to users
In this service is importance is given the time of the users
7. In this services, all current information concerned with the field of the users are sent to him and the user selects himself his useful information
In this service only the selected information concerned with the user only are sent
8. In this service, the users has to view himself the list sent by the library to him
But in this service the user should essentially be fully satisfied with the service
9. CAS can be organized with or without the computer
This service in only possible with the aid of computer
8. Library Consortium
A Consortium could be described as a group of organizations who come together to fulfill
a combined objective that usefully requires co-operation and the sharing of resources.
And need to have a clear mutual goal in order to ensure their success. The aim should be
to deliver “more than the sum of the individual parts”. A library Consortium formation
can be local,regional,state,national and inter institutional level.
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