• Proceedings of the Korea Multimedia Society Conference
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• 2012.05a
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• pp.301-301
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• 2012

최근 학계에서는 음악교육자료 데이터베이스화에 대한 요구가 계속 늘어나고 있는 추세임에도 불구하고 음악에 대한 학문적 연구가 늦게 시작 되는 등 여러 가지 원인 때문에 실제적으로는 DB구축이 잘 안되어 있다. 본 논문에서는 이러한 음악교육자료들을 분석하고 연구하여 이에 알맞은 데이터베이스시스템을 디자인 해보려 하는데 주요한 취지를 두고 있다.

• Journal of Korea Multimedia Society
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• v.5 no.6
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• pp.753-758
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• 2002

In this paper, low voltage 3V CMOS programmable gain amplifier(PGA) for using in the transmitter and receiver of ADSL analog front-end is designed. The designed receive PGA is connected with 1.1MHz continuous lowpass fillet and controls the gain from 0dB to 30dB. And also the transmitter PGA is connected with 138KHz lowpass filter and controls the gain from -15dB to 0dB. The gain of All PGAs can be programmed by digital logic circuits and main controller. The designed PGAs are verified using HSPICE simulation with $0.35\mu{m}$ CMOS parameter.

• Journal of Korea Multimedia Society
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• v.8 no.9
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• pp.1153-1162
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• 2005

In this paper, we developed an XML Document Data Synchronization System for java(XDS4j) based on both SyncML(Synchronization Markup Language) framework Sync4j and embedded database system Berkeley DB XML. Because most existing data synchronization systems are based on file systems, data synchronization times at Fast Sync in those systems are very delayed. In the XDS4j, however, XML documents data produced at SyncML client and SyncML server are managed by embedded database system, and also synchronization time at Fast Sync is reduced because only partial elements are accessed by applying to XPath.

• Journal of Korea Multimedia Society
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• v.25 no.1
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• pp.135-143
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• 2022

In order to convert Korean folk paintings called Minhwa, a part of traditional Korean heritage, into DBs, it is necessary to design a classification system suitable for the characteristics of folk paintings. A classification system and the generating of unique codes are required to classify and save them. To realize this, a basic classification system was created by listing objects depicted in folk paintings, and keywords were extracted by reclassifying them for each object. In order to assign a unique code to each piece, we organize the English names of each Minhwa since the English names of the folk painting contain the names of objects. The code name is extracted by applying the order of nouns and consonant priority rules in English names and attaching five Arabic numerals. These codes are later assigned to each image file stored in the database and are input together with the keyword. The Minhwa DB constructed in this way enables storage and search centered on objects and keywords and the intuitive inferring of the type of object from the code name.

• Journal of Korea Multimedia Society
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• v.9 no.12
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• pp.1636-1648
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• 2006

In this paper, we propose a new optimization approach to the rate control problem in a wired-cum-wireless network. A primal-dual interior-point(PDIP) algorithm is used to find the solution of the rate optimization problem. We show a comparison between the dual-based(DB) algorithm and PDIP algorithm for solving the rate control problem in the wired-cum-wireless network. The PDIP algorithm performs much better than the DB algorithm. The PDIP can be considered as an attractive method to solve the rate control problem in network. We also present a numerical example and simulation to illustrate our conclusions.

• Journal of Korea Multimedia Society
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• v.23 no.1
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• pp.8-14
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• 2020

For a reliable fingerprinting system, improving fingerprint matching accuracy is crucial. In this paper, we try to improve a binary image fingerprint matching performance by utilizing auxiliary information, power mask, which is obtained while constructing fingerprint DB. The power mask is an expected robustness of each fingerprint bit. A caveat of the power mask is the increased storage cost of the fingerprint DB. This paper mitigates the problem by reducing the size of the power mask utilizing spatial correlation of an image. Experiments on a publicly-available image dataset confirmed that the power mask is effective in improving fingerprint matching accuracy.

• Journal of Korea Multimedia Society
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• v.21 no.8
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• pp.960-968
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• 2018

The mobile visual search service uses a query image to acquire linkage information through pre-constructed DB search. From the standpoint of this purpose, it would be more useful if you could perform a search on a web-based keyword search system instead of a pre-built DB search. In this paper, we propose a representative query extraction algorithm to be used as a keyword on a web-based search system. To do this, we use image classification labels generated by the CNN (Convolutional Neural Network) algorithm based on Deep Learning, which has a remarkable performance in image recognition. In the query extraction algorithm, dictionary meaningful words are extracted using Wikipedia, and hierarchical categories are constructed using WordNet. The performance of the proposed algorithm is evaluated by measuring the system response time.

• JSTS:Journal of Semiconductor Technology and Science
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• v.17 no.1
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• pp.1-6
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• 2017

This paper presents an optimized adoption of NVM for the storage system of heterogeneous applications. Our analysis shows that a bulk of I/O does not happen on a single storage partition, but it is varied significantly for different application categories. In particular, journaling I/O accounts for a dominant portion of total I/O in DB applications like OLTP, whereas swap I/O accounts for a large portion of I/O in graph visualization applications, and file I/O accounts for a large portion in web browsers and multimedia players. Based on these observations, we argue that maximizing the performance gain with NVM is not obtained by fixing it as a specific storage partition but varied widely for different applications. Specifically, for graph visualization, DB, and multimedia player applications, using NVM as a swap, a journal, and a file system partitions, respectively, performs well. Our optimized adoption of NVM improves the storage performance by 10-61%.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.27 no.8C
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• pp.771-781
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• 2002

Conventional command-based communication services are rapidly substituted by multimedia web-based communication services at most recent times. As the result, many valuable database and services developed by investing lots of human and material resources become to be useless. Therefore in this paper we researched the implementation methods and techniques for making the updates efficiently from the conventional command-based database services to a multimedia web-based database system that made users easily access to database and services.

• Proceedings of the Korea Multimedia Society Conference
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• 2000.11a
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• pp.8-11
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• 2000

XLL은 웹 상에서 문서의 표준화와 데이터베이스로서의 역할을 잘 감당한다. 이러한 이점 때문에 XML 관련 표준안들이 늘어나고 개발되고 있는 추세이다. XML 관련 표준안으로는 XSL, 스키마, 네임스페이스, XLL 등이 있다. 이 중 XLL은 현재 IE(Internet Explorer) 5.5에서도 제대로 지원되지 않아 XLL을 구현하기 위한 연구들이 활발히 진행되고 있다. XLL을 지원하는 브라우저, 프로그램, 컴포넌트들이 개발되었는데 이것들은 모두 해당 프로그램을 다운받거나 설치해야한다는 단점이 있고 특정 프로그램을 사용해야 하는 부담이 따른다. 본 논문은 웹 상에서 아무런 프로그램이 없이 XML 문서의 URL을 등록하면 그 문서에 있는 XLL을 DB를 이용하여 저장하고, ASP 및 DOM을 이용하여 DB에 저장된 XLL과 원래 문서에 포함된 XLL을 웹 상에서 바로 보여질 수 있도록 구현한다. XML 문서가 HTML을 넘어서 대중화가 되었을 때 웹 로봇이 XLL 등록하는 역할을 하도록 한다면 XML을 기반으로 하는 검색사이트로서의 역할을 감당할 수 있다.