• Proceedings of the Korean Geotechical Society Conference
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• 2009.03a
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• pp.667-672
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• 2009

Gathering information and systemization of infrastructure disaster management is to reduce uncertainties in making decisions and maximize the number of alternations. The key objects of a sensor-based progress report and propagation automation systems are to provide objective data, realize and support decision making and deliver them to a certain area, department, manager and other people rapidly. The major findings and results of this study are as follows. 1) Application of international standard-based alerting protocol(CAP; Common Alerting Protocol). 2) Development of database of existing progress report and propagation manual in order to achieve networking of safety management on major social infrastructure of the nation. 3) Development middleware application programs to progress report and propagation data using SMS, FAX, EMS, VMS, MMS.

• Information and Communications Magazine
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• v.19 no.11
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• pp.24-31
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• 2002

지금까지 SDR을 비판적인 시각으로 검토해 보았다 하지만 분명한 것은 SDR은 disruptive technology의 기능성을 가지고 있다는 점이다. 현재 domain specific하게 vertical market을 구축하고 있는 구현방식을 horizontal market으로 바꿔보자는 발상으로 전체적인 기술과 시장의 대세와 일치하기 때문이다. 저자의 관점은 SDR을 technology-driven 한발상으로 '일단 SDR이다' 라고 revolution으로 접근하는 것은 옳지 않다고 보는 것이다. SDR이란 Hype이 Real이 되려면 (1) power 소모, co-working과 같은 기술적인 문제들이 해결되고, (2) SDR 도입을 지연시키는 시장 환경이 개선되어야 하며, (3) software download, middleware 나 operating system과 관련된 정치적인 문제들이 해결되어야 한다. 이러한 문제들은 하루 아침에 해결되는 것이 아니기 때문에 market-driven한 관점에서 SDR concept이 기존의 장벽들을 극복할 수 있을 때 하나씩 SDR cencept을 채용해가는 evolution으로 접근하는 것이 중요하다. 앞으로도 Moore의 법칙은 15년에서 20년 가까이 지속될 것으로 전망하고 있다. 이미 Moore의 법칙에 의한 기술발전이 수요를 앞서는 조짐이 나타나고 있는 분야도 있어 남아도는 gate를 어떻게 활용할 것인가에 대해 회사마다 다른 전략을 펴고 있다. 특히 TI가 DSP 기반으로 벌인 다양한 사업전력, Intel이 CPU 기반으로 벌이는 Radio Free 사업 전략은 SDR에 대해 많은 시사점을 던져 준다. MMITS Forum에서 시작하여 SDR Forum 초창기, 현재의 SDR Forum 까지 SDR의 개념은 시장의 반응에 따라 변해 왔고, 일부 기술들은 더 이상 SDR 이라는 그늘에 머물지 않고 독자적인 기술군을 형성해 가고 있다. 분명한 것은 SDR 기술은 시장에서의 도전을 바탕으로 끊임없이 변해왔고 앞으로도 변해 갈 것이다. 지금의 비전이 최종적인 것이라고 섣불리 판단하고, 시장의 기술 흐름을 아전인수식으로 해석하고 만병통치 약을 만들려는 시도는 실패 잉태하고 있는 매우 위험한 발상이다. SDR이 꿈꾸는 세상은 이상향임에 틀림없지만 항상 시장을 주도하는 것은 꿈이 아니라 가격 경쟁력이기 때문이다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.36 no.12B
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• pp.1659-1669
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• 2011

In this paper, we discuss design and implementation of intelligent retail store management system through the application of RFID technology to effectively manage retail stores. Firstly, we defined functionality required for system development, designed the system structure, and proposed the service control procedures. Secondly, we implemented the designed system, and then conducted related tests to verify functionality and performance of the system. As a result, we confirmed through functional tests including 129 items that everything was normal behavior, and were able to determine the performance through testing of RFID middleware, RFID readers and tags.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.42 no.1
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• pp.157-161
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• 2017

This paper introduce UHF miniaturized RFID tag antenna which is embedded on the seal-bolt or plastic bolt for automobile plate. To detect the illegal and un-registered car, the illegal automobile detection system has been developed using the seal-bolt UHF RIF tag antenna. The diameter of seal-bolt UHF tag is about 24mm, almost the same size as 100 Won coin. The simulated and measured reflection coefficient are compared, and the reading range patten is also measured. If seal-bolt tag is embedded on car plate, police can get information of automobile and detect illegal vehicles easily with the illegal automobile detection system.

• Korean Journal of Computational Design and Engineering
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• v.16 no.2
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• pp.146-155
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• 2011

As the seriousness of environmental pollution being on a rise, a low carbon and environment-friendly design for energy efficiency has been issued. With respect to energy in the construction industry, an adoption of BIM which is possible for the various energy performance assessments in the early design phase has been actively working on. In the most cases of energy performance assessment, the data compatibility from the lack of standard software and format became a problem and the improvement for data compatibility system has been needed. This study is to develop the IFC based IDF converter as a middleware which connects between BIM software and energy analysis software. For the building energy performance assessment, Energy Plus and IFC are selected for the standard energy analysis software and its file format. Parameters are organized by steps and the integrated material library is built so it is trying to reduce the existing problem of energy software interface as much as possible. The development of IDF Converter will promote the spread of related fields with increasing the BIM standard and the utilization of energy performance assessment.

• Journal of the Korea Society of Computer and Information
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• v.20 no.9
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• pp.55-60
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• 2015

This paper introduces a program structure that minimizes the client's business logic by reducing the client's specifications as a way of minimizing the limitations of online game platforms. The objective of this thesis is to design an online game that is based on a 3-tier client/server structure, and thus using this 3-tier structure to ultimately create an online Sutda game that anyone can enjoy. The progression of newly released games is highly based on the mobile market and the number of online games being launched is decreasing. As the mobile game market grows, more and more multi-platform games are being developed and target platforms within online games are greatly diversifying. Through these situations, this thesis minimizes the client's business logic through a 3-tier structure of application-middleware-database, and also proposes an online game client/server that allows three or more users to participate simultaneously through the server.

• The KIPS Transactions:PartD
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• v.10D no.6
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• pp.1017-1024
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• 2003

Jini is a promising HomeNetworking middleware of computing environment based on Java Technology. To support Homenetwork service based on Jini, Jini device requires a successive operation and complicated management. In this paper, our service management system is a service provider component and lookup service component including automation module. Our automatin module privide searching and setting function of a library, runtime environment and class file system cinfiguration information for Jini service. Our system can be accomplished by automation of runtime environment, simplification of service management structure, visualization of service execution.

• Journal of the Korean Society of Systems Engineering
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• v.1 no.1
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• pp.14-19
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• 2005

High temperature vacuum furnaces or high standard electric furnaces demand high technology level and high production cost. Therefore, an iterative design process and the optimization approach under integrated computing environment are required to reduce the development risk. Moreover, it also required to develop an integrated design software that can manage the centralized database system between factory and design department, and the automated furnace design and analysis. The developed software is dedicated to the development of the vacuum (electric) furnaces. Based on the distribute middleware system, the GUI module, the CAD module, the thermal analysis module and the optimization module are integrated. For the DBMS, Microsoft Access is employed, the GUI is developed using Visual Basic language, and AutoCAD is utilized for the configuration design. By investigating the analysis code interface, the analysis and optimization process, and the data communication method, the overall system architecture, the method to integrate the optimizer and ana lysis codes, and the method to manage the data flow are proposed and verified through the optimal furnace design.

• Journal of the Korea Safety Management & Science
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• v.10 no.4
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• pp.189-198
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• 2008

At present, companies write daily work record or use bar-code in order to collect distribution flow data in real time. However, it needs additional works to check the record or read the bar-code with a scanner. In this case, human error could decrease accuracy of data and it would cause problems in reliability. To solve this problem, RFID (Radio Frequency Identification) is introduced in many automatic recognition sector recently. RFID is a technology that identification data is inserted into micro-mini IC chip and recognize, trace, and manage object, animal, or person using wireless frequency. This is being emerged as the core technology in future ubiquitous environment. This study is intended to suggest RFID application method in franchise business. Traceability and visibility of individual product are supplied based on EPCglobal network. It includes DW system which supplies various assessment data about product in supply chain, financial transaction system which is based on product transaction and position information, and RFID middleware which refines and divides product data from RFID tag. With the suggested application methods, individual product's profile data are supplied in real time and it would boost reliability to customer and make effective cooperation with existing operation systems (SCM, CRM, and e-Business) possible.

• ETRI Journal
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• v.35 no.2
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• pp.259-269
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• 2013

Android has become the most popular platform for mobile devices. However, Android still has critical performance issues, such as "application not responding" errors and hiccups resulting from garbage collection. Many phone vendors have tried to resolve the problems by characterizing and improving the performance. However, there are few insightful performance analysis tools for the Android-based systems. This paper presents AndroScope, which is a performance analysis tool for both the Android platform (Dalvik virtual machine, core libraries, Android libraries, and even Linux kernels) and its applications. To the best of our knowledge, this is the first tool to collect and analyze performance data from all the software layers of the Android-based systems. AndroScope offers a trace mechanism to collect such deep and wide performance data as hardware performance counters, time, and memory usage. In addition, the tool includes TraceBridge, which is a middleware for the fast handling of mass logs. Moreover, AndroScope offers an integrated graphical user interface with the Android software development kit to display a great volume of the detailed performance data.