• Journal of the Institute of Electronics Engineers of Korea SC
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• v.42 no.2 s.302
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• pp.19-26
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• 2005

This paper is about designing and implementation of Multi-Function UHF RFID Reader Platform that receives and processes RFID tag data from the tags, and transmits the data to PC server through Bluetooth, USB, RS-232 or Ethernet. This reader system is composed of RFID module, ARM processor, RS-232 interface, USB, Ethernet MAC interface, Bluetooth etc.. This paper also provides a brief overview and concept of RFID reader, and proposes the design and implementations of the RFID reader platform. The paper evaluates and analyzes two practical implementations, fixed type and portable type.

• Spatial Information Research
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• v.23 no.4
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• pp.33-46
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• 2015

The fact that the limits of information recency, diversity, and usability are mainly caused by the supply oriented geospatial data and service development is commonly recognized. It is recently tried to overcome the limits by facilitating user experience and VGI(Volunteered Geographic Information) in several geospatial web services. This study suggests conceptual architecture and service scenario for geospatial collaborative platform prototype through review and examination of previous researches. The prototype, composed of 4 unit modules: 3D POI Creation Module, 3D POI Application Module, 3D POI/Event Management Module, 3D POI/Event Monitoring Module, provides the capability of collaboratively dealing with geospatial work. The suggested service scenario is demonstrated by developing prototype for the service modules.

• 한국정보통신설비학회:학술대회논문집
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• 2003.08a
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• pp.264-266
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• 2003

통신망의 진화에 따라 응용서비스 제공을 위한 신호를 제어를 제어하는 코아망도 다양하게 변화하고 있다. 현재 유무선망의 신호 제어에는 SS7 기반의 프로토콜이 사용되고 있으며. 유선에서는 INAP, 무선에서는 WIN, CAP 등의 최상위 프로토콜이 사용되고 있다. VoIP 망에서는 SIP과 H.323 프로토콜이 주로 사용되고 있으나 점차적으로 SIP을 보다. 많이 사용하는 추세이다. 차세대망인 NGN에서 코아망은 IP망으로 변화되며 SIP를 주로 이용한다. 그리고 개방형 망을 제공하기 위해 Parlay/OSA API를 도입하고 있다. 그 외에도 망의 변화에 따라 또 다른 프로토콜이나 API의 사용이 필요할 수도 있다. 이러한 다양한 망의 변화에 적극적으로 대처할 수 있는 응용서비스 제공 플랫폼은 코아망의 다양한 프로토콜을 동시에 지원할 수 있어야 하며 망에 따라 지원하는 프로토콜을 자유롭게 조합할 수 있어야 한다. 이를 위해서 본 논문에서는 응용서비스 제공 플랫폼에서 응용서비스를 제어하는 서비스 로직의 수행 환경과 프로토콜을 제어하는 계층을 분리하고 프로토콜처리 소프트웨어를 모듈화 시킴으로써 그 기능군을 쉽게 추가 또는 제거할 수 있는 구조를 제시한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2002.11b
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• pp.1639-1642
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• 2002

자바가상머신은 제한적인 자원을 갖는 내장형 시스템에서 기업용 서버에 이르기까지 다양한 플랫폼에서 사용되고 있으므로, 각 플랫폼과 응용분야에 최적화된 자바가상머신을 만드는 것은 중요하다. 본 논문에서는 자바가상머신 스펙 1.2 를 지원하도록 구현한 자바가상머신의 전체적인 구조와 주요 부분의 구현 내용을 설명하고, 다양한 플랫폼과 응용 분야에 따라 최적화된 자바가상머신을 생성하기 위하여 자바가상머신 내부의 핵심 데이터 구조와 모듈을 재구성하는 연구 방향에 대해서도 소개한다.

• The Journal of the Convergence on Culture Technology
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• v.3 no.4
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• pp.177-180
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• 2017

Recently, as aging progresses rapidly around the world, studies using light (UV-LED, etc.) as a method which is harmless to the human body and less burden on the treatment are continuously being carried out. Especially, in some fields, it is not used in a limited way but it is advantageous to be used in various medical fields such as dermatology, dentistry, otorhinolaryngology, etc. In many advanced countries, various studies using it have been carried out. However, Are far behind in developed countries. Therefore, in this paper, we propose a technology that can provide good quality services to human patients by effectively controlling light module that can be used for medical use by using IoT crawler-based middleware platform.

• Annual Conference on Human and Language Technology
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• 2021.10a
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• pp.152-157
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• 2021

Kaldi는 음성인식 오픈소스 플랫폼이며 많은 기업에서 이를 이용하여 비즈니스 및 연구를 진행하고 있다. 그러나 국문으로 된 Kaldi에 대한 자세한 모듈 설명과 활용법은 아직 미비한 실정이다. 본 논문은 음성인식 오픈소스인 Kaldi에 대한 각 모듈별 자세한 설명과 더불어 데이터 증강 기법인 SpecAugment를 한국어 음성인식 시스템에 적용하여 성능 향상 여부를 검증하였다. 그리고 Kaldi의 음향모델과 언어모델을 변경하면서 어떠한 모듈들로 구성된 한국어 음성인식 모델을 사용하는 것이 가장 결과가 좋은 지를 검증하고 실시간 디코딩에 있어서 실용적인지를 비교하였다.

• Journal of Digital Contents Society
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• v.18 no.7
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• pp.1341-1346
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• 2017

In this paper, we designed the open service platform based on integrated type of individual customized service and intelligent information technology with individual's complex attributes and requests. First, the data collection phase is proceed quickly and accurately to repeat extraction, transformation and loading. The generated data from extraction-transformation-loading process module is stored in the distributed data system. The data analysis phase is generated a variety of patterns that used the analysis algorithm in the field. The data processing phase is used distributed parallel processing to improve performance. The data providing should operate independently on device-specific management platform. It provides a type of the Open API.

• Journal of KIISE:Software and Applications
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• v.37 no.10
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• pp.736-744
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• 2010

Log data collected from mobile devices contain diverse and meaningful personal information. However, it is not easy to implement a context-aware mobile agent using this personal information due to the inherent limitation in mobile platform such as memory capacity, computation power and its difficulty of analysis of the data. We propose a method of selective inference for modular Bayesian Network for context-aware mobile agent with effectiveness and reliability. Each BN module performs inference only when it can change the result by comparing to the history module which contains evidences and posterior probability, and gets results effectively using a method of influence score of the modules. We adopt memory decay theory and virtual linking method for the evaluation of the reliability and conservation of casual relationship between BN modules, respectively. Finally, we confirm the usefulness of the proposed method by several experiments on mobile phones.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.20 no.12
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• pp.2417-2424
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• 2016

Small size and light weight is very important for components used in radar mounted platform such as airborne radar. Recently, the active phased array radar is developed as an array of antennas for thousands of transmit/receive modules to be used as a multi-function radar that can detect and track targets. In this case, the size and weight of the transmit/receive modules are critical factor for developing the radar. In this paper, we developed a compact transmit/receive module using the 10W RF MEMS switch domestically localizing and reduced the circuit area to about 86.5% compared to using a circulator. The developed module satisfies not only electrical requirements but also MIL-STD's environmental specifications. So it can be used in a military device. It can be used at adaptive tunable receivers, reconfigurable smart active antennas and wide band beam electrical steering antennas.

• Journal of Convergence for Information Technology
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• v.11 no.5
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• pp.23-29
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• 2021

Recently, a situation in which a specific content service is impossible worldwide has occurred due to a failure of the platform service and a significant social and economic problem has been caused in the global service market. In order to secure the stability of platform services, intelligent platform operation management is required. In this study, big data flow management(BDFM) and implementation method were proposed to quickly detect to abnormal service status in the platform operation environment. As a result of analyzing, BDFM technique improved the characteristics of abnormal failure detection by more than 30% compared to the traditional NMS. The big data flow management method has the advantage of being able to quickly detect platform system failures and abnormal service conditions, and it is expected that when connected with AI-based technology, platform management is performed intelligently and the ability to prevent and preserve failures can be greatly improved.