• Journal of Information Management
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• v.20 no.2
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• pp.69-99
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• 1989

With regard to system configuration, file structure and function, this study has compared and analyzed KITLAS developed by KIT Library and CD-ROM BiblioFile, which is selected among CD-ROM Catalog Production Products, the mass storage media, produced by the fast-growing laser technology and information technology. Furthurmore, this study illuminates how to improve the reliability of bibliographic database, implementing downloading and uploading processes which make possible the conversion and online, mass transmission of CD-ROM MARC records at once.

• The Korean Journal of Rheology
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• v.11 no.2
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• pp.97-104
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• 1999

This paper presents vibration control of a drive feeding system consisting of a new type of CD-ROM(compact discread only memory) mount using electro-rheologocal(ER) fluid. Chemically treated starch particles and silicon oil are used for ER fluid. and its field-dependent yield stresses are experimentally distilled under both the shear and the flow modes. On the basis of the yield stress, an appropriate size of ER CD-ROM mount adapted to conventional feeding system is designed and manufactured. Vibration isolation performance of the proposed mount is evaluated in the frequency domain and compared with that of conventional rubber mount. The ER CD-ROM mount is then installed to the drive feeding system and the system equation of motion is derived. Following the formulating the sky-hook controller, computer simulation is undertaken in order to evaluate vibration suppression of the feeding system subjected to various disturbances(excitations).

• Journal of Information Management
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• v.21 no.2
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• pp.9-23
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• 1990

CD-ROM technique, not more than 10 years after development, goes through rapid growth, has been taken advantage of several practical application parts. Needless to say about bibliographic data, numeric value, the phonetics, an image and a picture data that are recorded as abstract or full text, and offered and applied to industry, information service including library, it can be used for library staffs, information retrieval. Escape from the need of one disc drive and one computer to access one disc, now we organize an ideal system that can be retrieved several CD-ROM used only one drive, several users can access several information, so networking is possible through LAN. In this article, we studied the function and type, characteristics, system, structure, data block, production procedure, standardization of CD-ROM LAN.

• Journal of the Korean Society for Library and Information Science
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• v.33 no.4
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• pp.29-46
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• 1999

This study aims to evaluate the quality of CD-ROM databases: Korean MARC on Disc and Korean National Bibliographies on CD-ROM. The five criteria(accuracy, completeness, consistency on the quality of data itself and ease of use, variety of retrieval function on the quality of database services) are used to measure their quality. The purpose of this study was to diagnose the quality of two CD-ROM databases mentioned above and to analyses the measured result of quality comparatively and to find out the problems of them and also to provide possible suggestions for their improvements.

• Digital Contents
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• no.4 s.35
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• pp.22-26
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• 1996

국내외를 막론하고 CD-ROM은 데이터베이스의 제공이라는 차원보다는 멀티미디어 타이틀이라는 인식이 앞서고 있다. 현재 국내에서 데이터베이스 형태로 개발된 CD-ROM 타이틀은 조선일보 93, 이조실록, 문장대백과와 같은 텍스트 위주의 데이터베이스가 10여 종 있을 뿐이다.

• Proceedings of the IEEK Conference
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• 2000.09a
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• pp.163-166
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• 2000

본 논문은 CD-ROM Title 컨텐츠의 검색과 제어를 위한 음성인식 시스템 개발을 목적으로 한다. 인식명령어는 학교 졸업앨범 또는 회사홍보용 CD-ROM Title컨텐츠의 타이틀(상품안내, 회사소개, 업무실적 등)로 구성된다. 모델은 지속시간을 고려한 DMS 모델, 인식은 OSDP를 사용하였다.

• Korean Journal of Child Studies
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• v.24 no.5
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• pp.15-26
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• 2003

In this study of children's story comprehension, 157 first grade students were randomly selected from 2 elementary schools. Based on their test scores on standardized reading comprehension test, 36 children in the upper and in the lower 25th percentiles were assigned to either a high or a low reading group. Children of both groups read the same story presented either by CD-ROM or by printed-book. Story comprehension was measured by retelling the story and by questions on comprehension. Data were analyzed by 2-way ANOVA. Results showed significantly higher comprehension scores in CD-Rom compared with the printed-book group. The difference in comprehension scores between the CD-ROM and the printed-book groups was greater than in the low reading group compared with the high reading group.

• Journal of KSNVE
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• v.7 no.3
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• pp.393-399
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• 1997

This study proposes a methodology with which the optimal damper positions of the feeding system in a CD-ROM drive are determined to removal the harmful tilting vibration modes. For this purpose, vibration characteristics of the feeding system are identified by a theoretical modeling as well as vibration experiments. We perform the modal testings using the impact hammer and shaker; furthermore, we establish a vibration model due to the rigid-body motion. The analysis and experiments show that the feeding system has three rigid-body vibration modes in the low-frequency region and two of them come from the tilting modes. We show that the tilting modes can be removed by determining the damper positions.

• Journal of the Korean Society for information Management
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• v.13 no.1
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• pp.119-141
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• 1996

The purpose of this study is to seek how to effectively acquire a full-text using LHI(Loca1 Holdings Information) when we search bibliographic DB. For this study, the pre-investigation of LHI within Online and CD-ROM DB was made using local and overseas literature. The questionary survey was made of librarians and users who have used CD-ROM. The finding of this study is that LHI is not very widely used in libraries, thus more study on ,LHI within Online and CD-ROM DB is required to get high quality information service.

• Proceedings of the KSME Conference
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• 2001.06b
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• pp.210-215
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• 2001

CD-ROM Drives Rotating high speed as 10000 rpm cause serious noise and vibration problems. At the high speed, dominant noise is Air Borne Noise produced from high-speed airflow and Structure Borne Noise produced from structural vibration. In this research, vibration and sound characteristics in CD-ROM Drive were studied by the use of experimental analysis and computational simulation. Sound intensity techniques and ODS(Operational Deflection Shape) techniques are applied to identify the acoustic noise source of CD-ROM drive. And Computational simulation using SYSNOISE is conducted for describing the noise behavior.