검색연산자 | 기능 | 검색시 예 |
---|---|---|
() | 우선순위가 가장 높은 연산자 | 예1) (나노 (기계 | machine)) |
공백 | 두 개의 검색어(식)을 모두 포함하고 있는 문서 검색 | 예1) (나노 기계) 예2) 나노 장영실 |
| | 두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색 | 예1) (줄기세포 | 면역) 예2) 줄기세포 | 장영실 |
! | NOT 이후에 있는 검색어가 포함된 문서는 제외 | 예1) (황금 !백금) 예2) !image |
* | 검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색 | 예) semi* |
"" | 따옴표 내의 구문과 완전히 일치하는 문서만 검색 | 예) "Transform and Quantization" |
The library as a social agency must study and evaluate its effectiveness and seek to improve its service for achieving the external objectives for which it was created. The study is an attempt to define the determining factors involved in change in library service. Library service evolves as a consequence of social need, which comprises unconventional demands of emerging areas in the subject ratio of literature, change in methods of research, change in the educational level of the community, and change in the user behavior. Since the library is an agency of communication, growth and specialization of information, and increase in variety of information media have effects on library service. The library is one of the many communication agencies in society, and increase or decrease in their programs can be determining factors of change in library service. Today, libraries depend more and more upon interlibrary cooperation to allow them to overcome their limitation in resources and time, and they can bring about changes in their service by adjusting themselves to the interlibrary cooperation arrangements available. Finally, library service is rendered as a result of theorizing as to what the library might or should do, and naturally theories or change in them may be determining factors of library service.
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