• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권5호
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• pp.2660-2679
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• 2017

Crypton is a SP-network block cipher that attracts much attention because of its excellent performance on hardware. Based on Crypton, mCrypton is designed as a lightweight block cipher suitable for Internet of Things (IoT) and Radio Frequency Identification (RFID). The security of Crypton and mCrypton under meet-in-the-middle attack is analyzed in this paper. By analyzing the differential properties of cell permutation, several differential characteristics are introduced to construct generalized ${\delta}-sets$. With the usage of a generalized ${\delta}-set$ and differential enumeration technique, a 6-round meet-in-the-middle distinguisher is proposed to give the first meet-in-the-middle attack on 9-round Crypton-192 and some improvements on the cryptanalysis of 10-round Crypton-256 are given. Combined with the properties of nibble permutation and substitution, an improved meet-in-the-middle attack on 8-round mCrypton is proposed and the first complete attack on 9-round mCrypton-96 is proposed.

• 대한조선학회논문집
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• 제44권6호
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• pp.657-665
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• 2007

The object of this paper is to describe the ubiquitous computing technologies for ship, which is produced and assembled by many steel blocks. It includes the testing of a 2.4GHz wireless communications platforms and radio-frequency identification technology with the blocks disturbing the wireless communication. The power line communication that is established in a ship already is also experimented for some data transfer. Also, possible application areas of the ubiquitous computing technology to ships are discussed. At last, the test bed copied from an actual vessel was installed and data acquisition tests were established using wire and wireless communication. In this paper, we implemented some ubiquitous computing technologies in the test bed simulating a ship environment and investigated the basic characteristics of ubiquitous computing technologies.

• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2010년도 제42차 하계학술발표논문집 18권2호
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• pp.361-364
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• 2010

글로벌 시장환경체제에서 유통구조가 복잡해짐에 따라 제조사에서 유통업체 및 소비자까지 아우르는 전체 공급망에서 제품에 대한 이력추적관리는 투명한 유통구조를 형성시킬 뿐만 아니라 더 나아가 소비자들의 안전에 지대한 영향을 미친다. 세계보건기구(WHO)에 따르면 선진국에서 부정 전문의약품의 유통비중은 전체 의약품의 1% 정도이며 이를 미국에 적용할 경우(2006년 기준), 미국에서 유통된 34억 개 전문의약품 중 3,400만 개의 전문의약품이 가짜일 가능성이 있는 것으로 보고되고 있다. 이로 인해 미국 캘리포니아주에서는 유통망의 투명성과 소비자의 안전을 보고하기 위하여 2D 바코드나 RFID(Radio Frequency IDentification)를 통해 의약품 제조에서 약국까지의 유통과정 계보를 추적할 수 있도록 제약기업에 2015년부터 제품에 시리얼번호를 부착한 이력장치(serialized e-pedigree)를 시행할 예정이다. 따라서 본 연구에서는 국내 외적으로 물류/유통과정에서 제품의 위 변조를 예방하기 위한 e-pedigree에 현황 및 동태를 파악하고 국내 e-pedigree에 대한 방향성을 고찰하는데 그 목적이 있다.

• 전자통신동향분석
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• 제30권4호
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• pp.92-101
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• 2015

미래 전장은 정보 지식 기반의 첨단 전력체계를 확충하기 위해 향후 전력구조를 통합, 지휘통제통신(C4I) 체계와 생존성과 통합성이 향상된 전장의 네트워크중심전(NCW) 수행능력을 향상시킬 것이다. 사이버물리시스템(Cyber-Physical Systems: CPS)은 함정전투체계에 적용되고 있는 DDS를 포함하여 국방 M&S의 근간인 Live, Virture, Constructive(L-V-C) 체계의 큰 축을 형성하고 있다. 사물인터넷(Internet of Things: IoT) 기술은 센서네트워크, 통신, Radio Frequency Identification(RFID), Ubiquitous Sensor Network(USN), Machine to Machine(M2M), D2D 기술 및 상황인지, 지능서비스를 위한 정보수집/가공/융합/분석/예측기술을 포괄적으로 포함한 기술로서 미래산업을 이끌어 갈 차세대 선도 기술이며, 특히 군사적으로도 감시정찰 센서네트워크(USN), 견마형로봇, 경전투로봇과 무인기 기술 및 전술정보통신망체계(TICN) 등 첨단 통신네트워크 기술의 전력화 추세는 IoT 기술의 적용영역을 넓혀주고 있다. 감시정찰체계(Sensor)에서는 감시정찰 분야 영상정보 처리, 표적탐지 등과 관련된 IoT 기술 소요와 지휘통제통신(C4I) 체계의 상호운용성, 데이터링크, 지능형 통신체계 등 C4I 관련 IoT 기술 소요 및 타격체계(Shooter)의 내장형 SW 등 유 무인 무기체계 관련 IoT 기술의 소요가 증대될 것으로 예상된다. 본고는 CPS 및 IoT 기술의 군사적 활용방안 및 획득전략에 대한 적용기술 및 발전방향을 살펴본다.

• 한국재료학회:학술대회논문집
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• 한국재료학회 2009년도 춘계학술발표대회
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• pp.15.2-15.2
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• 2009

Manufacturing of printed electronics using printing technology has begun to get into the hot issue in many ways due to the low cost effectiveness to existing semi-conductor process. This technology with both low cost and high productivity, can be applied in the production of organic thin film transistor (OTFT), solar cell, radio frequency identification (RFID) tag, printed battery, E-paper, touch screen panel, black matrix for liquid crystal display (LCD), flexible display, and so forth. The emerging technology to manufacture the products in mass production is roll-to-roll printing technology which is a manufacturing method by printings of multi-layered patterns composed of semi-conductive, dielectric and conductive layers. In contrary to the conventional printing machines in which printing precision is about $50~100{\mu}m$, the printing machines for printed electronics should have a precision under $30{\mu}m$. In general, in order to implement printed electronics, narrow width and gap printing, register of multi-layer printing by several printing units, and printing accuracy of under $30{\mu}m$ are all required. We developed the roll-to-roll printing equipment used for printed electronics, which is composed of un-winder, re-winder, tension measurement system, feeding units, dancer systems, guide unit, printing unit, vision system, dryer units, and various auxiliary devices. The equipment is designed based on cantilever type in which all rollers except printing ones have cantilever types, which could give more accurate machine precision as well as convenience for changing rollers and observing the process.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2012년도 추계학술발표대회
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• pp.36-39
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• 2012

IT산업이 발전함에 따라 Bluetooth, ZigBee, RFID(Radio Frequency Identification)와 같은 근거리 무선통신 시스템에 대한 연구가 활발히 진행되고 있으며 다양한 분야에 활용되고 있다. 그 중 NFC(Near Field Communication)의 연구가 활발히 진행되고 있으며, NFC 태그와 함께 사용할 경우 활용성은 더욱 증대된다. 이와 관련하여 현재 다양한 NFC 태그관련 애플리케이션이 존재한다. 하지만 기존의 NFC 태그 애플리케이션은 단일 기능을 중심으로 제공하고, 여러 가지 기능을 이용하기 위해서는 여러 개의 NFC 태그가 필요하다는 단점이 있다. 이 점을 개선하고자 본 논문에서는 단일 NFC 태그로 다양한 기능을 제공하는 애플리케이션을 구현한다. 기능들로는 Text입력과 에어플레인 모드, Wi-Fi, Bluetooth, 무음모드, 알람, 알람설정, 사용자 지정 애플리케이션 선택 및 활성이 있다. 이러한 기능들은 사용자의 상황에 맞게 태그에 입력 시킬 수 있으며, 결과적으로 기존의 단일 기능을 제공하는 애플리케이션보다 개선됨 점을 나타낸다.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.195-199
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• 2015

Many conventional management methods have emphasized the minimization of required resources along the supply chain. Accordingly, this paper presents a proposed method called the Virtual Design and Construction (VDC)-aided system. It is based on object-oriented resource control, in order to accomplish a feed-forward control monitoring supply chain logistics. The system is supported by two main parts: (1) IT-based Technologies; and (2) VDC Models. They enable the system to convey proactive information from the detection technology to its linked visualization. The paper includes a field study as the system's pre-test: the Scaffolding Works in a LNG Mega Project. The study demonstrates a system of real-time productivity monitoring by use of the RFIDbased Mobile Information Hub. The on-line 'productivity dashboard' provides an opportunity to display the continuing processes for each work-package. This research project offers the observed opportunities created by the developed system. Future work will entail research experiments aimed towards system validation.

• 국제학술발표논문집
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• The 4th International Conference on Construction Engineering and Project Management Organized by the University of New South Wales
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• pp.221-228
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• 2011

As construction works have become larger and more complex, improving productivity by introducing Information Technology (IT) is pursued and more effective construction management is needed in construction industry. In this circumstance, many different kinds of project management system is being introduced, and various IT technologies are applied such as Personal Digital Assistant (PDA), Bar Code, Radio Frequency Identification (RFID), Web Camera, and so on. However, these kinds of technologies might cause re-processing of information and ineffectiveness of project because of lack of real time information processing technology or separation between construction sites and management offices. Meanwhile, these technologies rather decrease the construction productivity except for the data saving and database function. Therefore, this research aims to develop Application that can be applied efficiently for construction material management, by understanding problems of former management system with questionnaires and extracting functions with analysis of requirements. In virtue of the construction material management Application which will be developed in this study, it will be possible to input information automatically, to process and check material information in real time, and to identify the location of necessary material. Then, the problem of separation between construction sites and management offices are solved, and as a result, more efficient management of materials in construction sites will become possible. At the same time, this study will investigate the possibility and applicability of new IT device, Smart Phone to construction sites.

• 제어로봇시스템학회논문지
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• 제17권1호
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• pp.47-53
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• 2011

To enable the efficient operation of ITS, it is necessary to collect location data for vehicles on the road. In the case of futuristic transportation systems like ubiquitous transportation and smart highway, a method of data collection that is advanced enough to incorporate road lane recognition is required. To meet this requirement, technology based on radio frequency identification (RFID) has been researched. However, RFID may fail to yield accurate location information during high-speed driving because of the time required for communication between the tag and the reader. Moreover, installing tags across all roads necessarily incurs an enormous cost. One cost-saving alternative currently being researched is to utilize GNSS (global navigation satellite system) carrierbased location information where available. For lane recognition using GNSS, a precise digital map for determining vehicle position by lane is needed in addition to the carrier-based GNSS location data. A "precise digital map" is a map containing the location information of each road lane to enable lane recognition. At present, precise digital maps are being created for lane recognition experiments by measuring the lanes in the test area. However, such work is being carried out through comparison with vehicle driving information, without definitions being established for detailed performance specifications. Therefore, this study analyzes the performance requirements of a precise digital map capable of lane recognition based on the accuracy of GNSS location information and the accuracy of the precise digital map. To analyze the performance of the precise digital map, simulations are carried out. The results show that to have high performance of this system, we need under 0.5m accuracy of the precise digital map.

• 한국콘텐츠학회논문지
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• 제8권1호
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• pp.328-338
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• 2008

현재 높은 인식성능을 보이고 있는 대용량의 음성인식 시스템의 대부분은 고립단어 음성인식 시스템이다. 이러한 시스템의 인식범위를 늘리기 위해서는 검색하려는 단어수를 늘려야한다. 하지만 검색하려는 단어수가 늘어남에 따라 시스템의 속도 및 인식 성능이 저하되는 문제점이 있다. 이러한 문제점을 해결하기 위해 본 논문에서는 스마트 흠 환경에서 음성인식 성능에 영향을 주는 상황정보를 정의하고 관성 센서와 RFID(Radio Frequency Identification)를 사용한 사용자 위치 추정 방법을 제안한다. 또한 음성인식시스템의 상황정보에 의한 단어모델 도메인을 구축하여 기존의 시스템보다 높은 성능을 보이는 음성인식 시스템을 개발한다. 스마트 흠 환경에서 본 연구에서 제안된 음성 인식 시스템이 인식률의 저하 없이 동작하는 것을 확인하였다.