• Journal of the Korean BIBLIA Society for library and Information Science
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• v.25 no.2
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• pp.5-23
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• 2014

The bibliographic records have been built up following the Digital Library System (DLS) cataloging rules in the school libraries. But it is hard to use DLS cataloging rule as the standardization guidelines in building up the bibliographic records in school libraries because it is not the detailed cataloging rules, has inconsistency in its own rules, and disagrees with KCR4 rules. Therefore, this study is to suggest the new amendment for DLS cataloging rule to improve the bibliographic records quality and to produce the standardized bibliographic records. To grasp the problems of the DLS cataloging rules, DLS cataloging rule was analyzed with KCR4 rule and the interviews were conducted to the 9 school librarian that have experienced over 3 years. The result showed that it was needed to correct the terms to accord with KCR4, and to amend the DLS rule in each area.

• Journal of Korean Library and Information Science Society
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• v.51 no.2
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• pp.355-379
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• 2020

Digital Library System(DLS) for the school library is a key access tool for school library materials. The purpose of this study was to find ways to improve the accessibility of materials through analysis of students' information search behavior in DLS. Data were collected through recording of 42 participants' DLS search process, and questionnaire. As a result, the search success rate and search satisfaction were found to be lower when the main purpose of DLS is simple leisure reading, information needs are relatively ambiguous, and when user experiences the complicated situations in the search process. The satisfaction level of search time sufficiency was the highest, and the search result satisfaction was the lowest. Besides, there was a need to improve DLS, such as integrated search of other library collection information, the recommendation of related materials, the print output of collection location, voice recognition through mobile apps, and automatic correction of search errors. Through this, the following can be suggested. First, DLS should complement the function of providing career information by reflecting the demand of education consumers. Second, improvements to DLS functionality to the general information retrieval system level must be made. Third, an infrastructure must be established for close cooperation between school library field personnel and DLS management authorities.

• Journal of the Korean Society for information Management
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• v.34 no.1
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• pp.31-50
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• 2017

This study was to suggest the problems and the improvement plan of Digital Library System (DLS) which has solved the library management and has supported the data building for resource sharing in school libraries since 2001. The 9 DLS committees were interviewed about the current situation of DLS use and the problems of DLS system in the 6 areas of acquisition, cataloging, circulation and discharge, inventory, library statistics, and searching interface as the research methods. Based on the interviews, the improvement plans were suggested as followed. In acquisition, it was to need the acquisition system development and online purchase for users. In cataloging, the improvement of data quality management, and indexes and vocabularies control for upgrade of searching function were needed. The advanced circulation speed in circulation, the restoration of discarded data in inventory and the exact statistic data in library statistics were need to improve the DLS. This study would contribute to the betterment of DLS and increase the use of DLS.

• Communications for Statistical Applications and Methods
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• v.29 no.1
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• pp.85-101
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• 2022

Derivative-linked securities (DLS) is a type of derivatives that offer an agreed return when the underlying asset price moves within a specified range by the maturity date. The underlying assets of DLS are diverse such as interest rates, exchange rates, crude oil, or gold. A German 10-year bond rate-linked DLS and a USD-GBP CMS rate-linked DLS have recently become a social issue in Korea due to a huge loss to investors. In this regard, this paper accounts for the payoff structure of these products and evaluates their prices and fair coupon rates as well as risk measures such as Value-at-Risk (VaR) and Tail-Value-at-Risk (TVaR). We would like to examine how risky these products were and whether or not their coupon rates were appropriate. We use Hull-White Model as the stochastic model for the underlying assets and Monte Carlo (MC) methods to obtain numerical results. The no-arbitrage prices of the German 10-year bond rate-linked DLS and the USD-GBP CMS rate-linked DLS at the center of the social issue turned out to be 0.9662% and 0.9355% of the original investment, respectively. Considering that Korea government bond rate for 2018 is about 2%, these values are quite low. The fair coupon rates that make the prices of DLS equal to the original investment are computed as 4.76% for the German 10-year bond rate-linked DLS and 7% for the USD-GBP CMS rate-linked DLS. Their actual coupon rates were 1.4% and 3.5%. The 95% VaR and TVaR of the loss for German 10-year bond rate-linked DLS are 37.30% and 64.45%, and those of the loss for USD-GBP CMS rate-linked DLS are 73.98% and 87.43% of the initial investment. Summing up the numerical results obtained, we could see that the DLS products of our interest were indeed quite unfavorable to individual investors.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.35 no.1
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• pp.5-26
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• 2024

The school library work support system was newly developed as 2024 Doksero DLS, but the DLS-compliant cataloging rules have not changed significantly since it was initially developed, and the current developed cataloging guidelines in 2020 also need to be updated. This study is to propose the considerations for developing guidelines for applying the DLS cataloging rules based on KCR4 by comparing the existing DLS (Ver. 2.0) cataloging rules, the 2024 DLS cataloging rules, and the 2020 bibliographic registration guidelines (Ver. 2.2). On this basis, considerations were suggested in terms of changing and expanding data elements, revising content rules for cataloging, method for recording access point, and developing controlled vocabularies. This study will allow to implement revision of DLS cataloging rules, development of guidelines, and system improvements.

• Proceedings of the KSRS Conference
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• 2002.10a
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• pp.228-228
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• 2002

The DLS(Data Link System) is located in the PDTS(Payload Data Transmission Subsystem) of KOMPSAT-II, and its main function is to provide communication link with Ground Segment as a space segment. DLS receive the data of MSC, OBC from DCSU(Data Compression Storage Unit) and transmit to the Ground Station by X-Band RF link. DLS is consist of CCU(Channel Coding Unit), QTX(QPSK Transmitter, ASU(Antenna Switch Unit) CCU makes a packet for communication after several kind of data processing such like Ciphering, RS Coding. QTX transmit PDTS data by OQPSK. Modulation. ASU is the unit for reliability of antenna switching. So, DLS's function is consists of ciphering, RS coding, CCSDS packetizing, randomizing, modulation and switching to antenna. These DLS's functions are controlled by PMU(Payload Management Unit). All commands to DLS are sent by PMU and all telemetries of DLS are sent to the PMU. The PMU receives commands from OBC and sends telemetries to the OBC. The OBC communicates with Ground Station by S-Band RF link. This paper presents the on-orbit DLS operation concept through the ground segment.

• Journal of the Korean Society for Library and Information Science
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• v.42 no.4
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• pp.55-72
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• 2008

This study intends to evaluate the relationships between DLS union catalog and curricula and to suggest methods for its quality control. Comprehensiveness, specificity, currentness, and location of copies were selected for evaluation criteria. And this criteria were practiced to evaluate the relationships its indicators and library-based learning topics of social subjects in Seoul DLS. The results of analyses the DLS union catalog serves users with book-based learning information and lacks specificity to evaluate quality of learning materials. Especially the DLS don't satisfy the learning community with on-line contents. Accordingly it is essential to appoint teacher librarians understanding curricula and instructional values of the catalog for its quality control.

• Journal of the Korean Society for information Management
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• v.22 no.3 s.57
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• pp.129-145
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• 2005

DLS(Digital Library System) have been established by Ministry of Education and Human Resources Development for providing the application services to each school library managers(teacher librarian) and front end users such as students and teachers. DLS's are separately operated by 15 major metropolitan or provincial office of education to cover all elementary, middle and high schools in Korea. There is a necessity which it will analyze the current status of DLS because it's system after starting a service 2 years passed. This study suggested to improvements strategies of DLS by survey from teacher librarian, subject teacher, students of 308 schools.

• Journal of the Korean Society for Industrial and Applied Mathematics
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• v.20 no.4
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• pp.277-293
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• 2016

We develop an efficient numerical method for pricing the Derivative Linked Securities (DLS). The payoff structure of the hybrid DLS consists with a standard 2-Star step-down type ELS and the range accrual product which depends on the number of days in the coupon period that the index stay within the pre-determined range. We assume that the 2-dimensional Geometric Brownian Motion (GBM) as the model of two equities and a no-arbitrage interest model (One-factor Hull and White interest rate model) as a model for the interest rate. In this study, we employ the Monte Carlo simulation method with the Compute Unified Device Architecture (CUDA) parallel computing as the General Purpose computing on Graphic Processing Unit (GPGPU) technology for fast and efficient numerical valuation of DLS. Comparing the Monte Carlo method with single CPU computation or MPI implementation, the result of Monte Carlo simulation with CUDA parallel computing produces higher performance.

• 한국정보교육학회:학술대회논문집
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• 2007.08a
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• pp.334-339
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• 2007

지식정보사회로 불리는 21세기는 필요한 정보와 지식을 검색 수집 활용하여 문제를 해결하고 새로운 정보를 창출할 수 있는 자율적이고 창의적인 인재를 요구하고 있다. 이러한 사회적 요구와 자기 주도적 학습을 위한 자료 제공 중심 교육환경의 공간으로 학교 도서관을 선정하였다. 본 연구는 DLS II 기반 도서관 홈페이지를 활용한 국어과 수행평가 개발 자료 개발 및 적용을 통해 교육정보화에 따른 학교도서관 활성화 방안을 제시하는데 도움이 되고자 한다.