• Title, Summary, Keyword: 서지프레임

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Performance Evaluation Between PC and RaspberryPI Cluster in Apache Spark for Processing Big Data (빅데이터 처리를 위한 PC와 라즈베리파이 클러스터에서의 Apache Spark 성능 비교 평가)

  • Seo, Ji-Hye;Park, Mi-Rim;Yang, Hye-Kyung;Yong, Hwan-Seung
    • Proceedings of the Korea Information Processing Society Conference
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    • pp.1265-1267
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    • 2015
  • 최근 IoT 기술의 등장으로 저전력 소형 컴퓨터인 라즈베리파이 클러스터가 IoT 데이터 처리를 위해 사용되고 있다. IoT 기술이 발전하면서 다양한 데이터가 생성되고 있으며 IoT 환경에서도 빅데이터 처리가 요구되고 있다. 빅데이터 처리 프레임워크에는 일반적으로 하둡이 사용되고 있으며 이를 대체하는 솔루션으로 Apache Spark가 등장했다. 본 논문에서는 PC와 라즈베리파이 클러스터에서의 성능을 Apache Spark를 통해 비교하였다. 본 실험을 위해 Yelp 데이터를 사용하며 데이터 로드 시간과 Spark SQL을 이용한 데이터 처리 시간을 통해 성능을 비교하였다.

The Current State and Challenges of Linked Data in Library Cataloging (편목의 관점에서 본 링크드 데이터: 현황과 과제)

  • Rho, Jee-Hyun
    • Journal of Korean Library and Information Science Society
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    • v.50 no.3
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    • pp.71-95
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    • 2019
  • With high interest in linked data, there are various attempts to accommodate the linked data model in cataloging process. This study intends to discuss how to adopt and make the best use of linked data based bibliographic framework in order to improve the quality of library catalogs and to enhance library services in Korean libraries. To the end, this study focuses on (1) discussion of the meaning of linked data from the library cataloging perspective, (2) tracking best practices for implementing and operating linked data among North American and Europe libraries and bibliographic networks (in detail, constructing various types of ontology, developing linked data model including BIBFRAME and OCLC linked model, and improving retrieval service and interface), and finally (3) exploring problems and the anticipated challenges to transition to the linked data model in Korea. The data for discussion were collected from literature review and case study.

Bibliographic metadata development for the efficient information resource sharing (효율적 정보자원 공유를 위한 서지 메타데이터 XML DTD 개발)

  • Lee, Hye-Jin;Song, In-Seok
    • Proceedings of the Korea Contents Association Conference
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    • pp.427-433
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    • 2004
  • Most information providers are offering integrated retrieval service based on the bibliographic metadata and schema corresponding to each type of document which are developed in a distributed and independent way. However, it is difficult to maintain the relational consistency of those single heterogeneous databases even though they obey the metadata standard like MARC or MODS. It is the main reason that those standards are restricted to present the general property of document regardless of its type and not to applied to define the relationship of document types. Therefore, It is necessary to define a comprehensive meta model to associate the related databases in a systematic way so that the semantically common part of them can be easily shared and reused without any additional effort like conversion or mapping. In this paper, we first outline the document types for designing meta model by the empirical analysis of various data schema of main information providers. We propose then data element definition, metadata model and modularized XML DTD which support the efficient and consistent management of multiple ducument types.

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A Study on the Outcomes Measurement of a Public Library's Reading Program for Children Using the Evaluation Framework Based-on the Logic Model (로직모델 기반 평가 프레임워크를 이용한 공공도서관 어린이 독서 프로그램 성과 측정 연구)

  • Han, Sang Woo;Park, Sung Jae
    • Journal of the Korean Society for information Management
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    • v.35 no.3
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    • pp.271-286
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    • 2018
  • The purpose of this study is to measure the outcomes of a program provided by a public library using the evaluation framework based on Logic Model. A reading program for children which was operated by a public library in Seoul was selected. The outcome evaluation was started with the analysis of the reading program process including planning, operation, and evaluation. Based on the analysis, a logic model framework for outcome evaluation was developed. For evaluation, user, bibliography, and circulation data were collected from the library KOLAS system. Additionally, the participant information were extracted from the final report drafted after the program. The research results show that the number of circulation of program participants was increased after the program. In addition, the range of reading topic was expanded. These findings indicate that the reading program is an effective program for promoting children's reading habit and that outcome evaluation might be a valid tool to measure the effectiveness of public library programs.

Implementation of error-robust software for PC-based T-DMB receivers (오류에 견고한 PC 기반 지상파 DMB 수신기 SW 구현)

  • Kim Kwang Seok;Moon Su Han;Kim Yong Han
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • pp.107-111
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    • 2004
  • 본 논문에서는 PC 기반 지상파 DMB(Terrestrial Digital Multimedia Broadcasting, T-DMB) 수신기를 위한 오류에 견고한 SW 구현에 대해 설명한다. 이 수신기는 PC 외부에 T-DMB 신호를 안테나로 수신하여 복조하고 채널 복호하는 프론트 엔드(front-end) 수신 모듈을 이용, USB를 통하여 RS(Reed-Solomon) 부호화된 MPEG-2 TS(Transport Stream) 데이터를 읽어 들여 RS 복호, TS 역다중화, 비디오 보호, 오디오 복호 등의 SW 처리 과정을 거쳐 디스플레이 상에 수신 내용을 표시하게 된다. 수신기가 실용적으로 동작하기 위해서는, 수신된 비트스트림이 예상하지 못한 형태일 때도 오동작하거나 멈춰 서지 않아야 한다. 수신된 비트스트림에는 채널 비트 오류로 인해 훼손된 부분이 있을 수 있으며, 송출 시에 잘못 제작된 비트스트림도 있을 수 있다. 본 논문에서는 우선 RS 복호를 수행하여 정정 가능한 범위까지 오류를 정정하고, 검출되었으나 정정하지 못한 오류 또는 비트스트림 제작 시의 오류로 인한 비트스트림 구문 오류를 검출하여 오류 처리를 수행하며, 이로 인한 화질 손상을 숨기기 위해 프리즈 프레임(freeze-frame)을 수행하도록 하였다.

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An Implementation of FRBR Model by Using Topic Maps (Topic Maps를 이용한 MARC데이터의 FRBR모델 구현에 관한 연구)

  • Lee, Hyun-Sil;Han, Sung-Kook
    • Journal of the Korean Society for information Management
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    • v.22 no.3
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    • pp.289-306
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    • 2005
  • As FRBR defines structural framework based on ER modeling for bibliographic data elements, an effective tool is required to implement FRBR model. In this paper, we present the implementation of FRBR model based on Topic Maps. To show the effectiveness of Topic Maps as the implantation language of FRBR, we implement FRBR model of MyongSungHwangHu by means of Topic Maps. We can ascertain that topic-association of Topic Maps conceptually harmonize with entity-relation of FRBR, which means that Topic Maps is suitable for the implementation of FRBR model.

A Study of Ontology-based Cataloguing System Using OWL (OWL을 이용한 온톨로지 기반의 목록시스템 설계 연구)

  • 이현실;한성국
    • Journal of the Korean Society for information Management
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    • v.21 no.2
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    • pp.249-267
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    • 2004
  • Although MARC can define the detail cataloguing data, it has complex structures and frameworks to represent bibliographic information. On account of these idiosyncratic features of MARC, XML DTD or RDF/S that supports simple hierarchy of conceptual vocabularies cannot capture MARC formalism effectively. This study implements bibliographic ontology by means of abstracting conceptual relationships between bibliographic vocabularies of MARC. The bibliographic ontology is formalized with OWL that can represent the logical relations between conceptual elements and specify cardinality and property value restrictions. The bibliographic ontology in this study will provide metadata for cataloguing data and resolve compatibility problems between cataloguing systems. And it can also contribute the development of next generation bibliographic information system using semantic Web services.

Development of the Drift Design Method of High-rise Buildings using Weight Control Factors (중량 조절계수를 이용한 고층 건물 변위설계법 개발)

  • Park, Hyo Seon;Seo, Ji Hyun
    • Journal of Korean Society of Steel Construction
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    • v.17 no.3
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    • pp.285-294
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    • 2005
  • Drift design is one of the core techniques in the structural design of high-rise buildings and resizing technique is regarded as a practical drift design method for high-rise buildings. In the resizing technique, the structural weight is re-distributed to minimize the target displacement without a change in structural weights. However, the structural weight determined from resizing algorithm is bound to the structural weight based on the preliminary design. Therefore, in this paper, a drift design method that can control the weight of the structure without causing drift control performance to deteriorate is proposed by incorporating the weight control factor in the formulation of resizing algorithm. The proposed drift design method is applied to the drift design of two frame-shear wall systems. The proposed drift design method, in this study, makes it possible to control both the drift and weight of a high-rise building.

New Approach to the Framework for Making the S&T Information Infrastructure in Complex System (복잡계 상황에서의 새로운 과학기술정보인프라구축의 틀 모색)

  • WON, DONG KYU;SUH, JEE HYUN
    • Proceedings of the Korea Contents Association Conference
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    • pp.188-192
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    • 2007
  • Today, the most pivotal issue in the national research and development, and national scientific and technical policy is to overcome uncertainties in the environment of technology development. The social and economic environment around us is at restricted uncertainty (complex system) where order and disorder coexist. Furthermore, the environment of technology development is more complicated. In order to bring about creativity in practices of technology development, we need a paradigm shift towards a new framework for the construction of the national scientific and technical information infrastructure, which entails a shift to creativity, self-organization and dynamic capability. The paradigm shift will lead the present scientific and technical information infrastructure which centers on information sharing, to move towards one that enables information coherence through self-organization. Thus, it is expected that the new Web 3.0 will provide a client-flexible analysis information system that will make information coherence and feedback possible. Through this system, the policy for the construction of a new scientific and technical infrastructure will evolve, which will bring about co-evolution of individual's knowledge through sharing of self-organizaed knowhow.

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