• Journal of the Korean Institute of Intelligent Systems
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• v.26 no.1
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• pp.82-86
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• 2016

This paper proposes a method for the immobilization of motorbike brakes in conjunction with near-field communication (NFC) technology in order to meet the increasing demand for security and convenience of motorbike drivers. We thought about the concept of wireless key, NFC security devices and automatic solenoid valve for setting the lock and unlock module. This paper propose the design and development of an innovative anti-theft alarm system for motorcycles using NFC smart devices based on RFID system, the basis of IoT and AES(advanced encryption standard) encryption Algorithm. The design concept is based on NFC communication strategy between the vehicle and owner. To do this concept, we designed motorcycle smart key system with general-purpose NFC system and the automatic solenoid valve for setting the lock and unlock module. First, we designed control unit and NFC card reader for motorcycle smart key system. Then we propose an AES encryption algorithm and prove that the motorcycle key system is controllable by showing the result of implementing and testing, after installing.

• Proceedings of the Korea Society for Industrial Systems Conference
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• 2007.02a
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• pp.87-96
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• 2007

Ubiquitous is a Latin-derived word meaning "to exist at any time and place" like water or air. In computing, the word "ubiquitous" indicates an environment in which users have access to networks without any limitation regarding computer networks or places. Important issues in building Ubiquitous Korea (U-Korea) are the social problems appearing with a rapid increase in the old age population. Nowadays, with the rise of the nuclear family, the increase in the number of elderly people living alone, and the change in the status of women, both wives and husbands are employed outside the home, and the relatives who would be responsible for supporting the elderly sometimes are on long or short business trips, and it happens that old people can't be looked after. Therefore the government developed a wireless paging system for the sick, disabled, old and weak so that when an emergency happens, by just simply dialing 119, an emergency aid center could take prompt action. However, the present wireless paging systems composing the under-layer of the emergency aid information system have some problems, such as, a lack of reliability, problems among terminals, mobile transmitters and receiving terminals, the users' refusal to admit the need for the system and poor operational skills, administrators' perfunctory management and checks, etc. On account of these problems, the system efficiency has degraded and therefore a system upgrade is necessary. In this paper, we attempt to evaluate the newly implemented SAFE119 system, a new wireless paging system seeking to correct the problems of the current system.

• Land and Housing Review
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• v.2 no.2
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• pp.145-155
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• 2011

It is very important for successful construction to estimate the soil volume conversion factor of domestic weathered ground accurately and reasonably. However, it is very difficult to quantify the weathering degree of weathered ground at the field, so that the soil volume conversion factor used in Korea is often dependent upon the standard of foreign countries. Besides, the soil volume conversion factor of domestic weathered ground has been rarely studied and the use and accuracy of the soil volume conversion factor have been questioned persistingly. This study suggests a simple but robust method for estimating the soil volume conversion factor and measuring the weathering degree reasonably, and attempts to establish the utilization of a soil volume conversion factor measurement system based on experimental and analytical results. We made relationship between electrical resistivity and weathering degree presented from weathering index obtained through laboratory tests using field samples, and an estimation method of in-situ weathering degree for granites and a calculation method of soil volume conversion factor using electrical resistivity. And also, we suggested the photogrametry measurement-equipment system for measuring the volume of cargo box and the application plan of stand equipment and RFID for calculating the earth volume and distinguishing buggies in order to design the measurement system for soil volume conversion factor applicable to the field. Ultimately, the Weathered Earth-work Management Program (WEMP) was developed, so field managers may easily obtain the information about earth volume and soil volume conversion factor at the weathered ground.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.5
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• pp.1616-1626
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• 2010

This paper will show how self-alarming EAS(Electronic Article Surveillance) system can improve its receiving performance of magnetic field signal and reduce false alarm using dual-band wireless communication. Our research improved the receiving performance and the areas of recognition of magnetic signal through the change of VLF receiving circuit and alarm transmitting method. In addition, we verified the reduction of false alarm by improvement of integrity and distance between tag and receiver through experiment. Thanks to our research, we can build the high performance and economical EAS with low false alarm on the multi gate store.

• Journal of Biosystems Engineering
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• v.37 no.6
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• pp.352-358
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• 2012

Purpose: The inexpensive black box system was developed to acquire and save driving information, to give the slope information, and to transmit SOS and theft signal. Method: The device consists of a main micro controller to acquire and save data, a GPS sensor module, a CDMA module, a touch LCD module, a RF (Radio Frequency) ID module, a SD (Secure Digital) card module, an emergency electric power source, a theftproof circuit, and a sensing device. The sensing device consists of a 8 bit micro controller, a accelerometer to detect impulse, two slope sensors to detect roll and pitch angle and a circuit to detect operation of 6 lighting devices. Results: Test results are as follows: 1) a tractor can be start up only with an electronic key (password or RFID card), 2) theft signal was transmitted when a tractor moved without an electronic key, 3) SOS was transmitted at conditions that rollover or crash happened. 4) 5 more than per 1s data are recorded at 5 minute intervals as new file name in SD card. Conclusions: This system can be used to save travelling record, reduce accident, prevent theft and rescue life in the accidents.

• 한국정보컨버전스학회:학술대회논문집
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• 2008.06a
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• pp.63-70
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• 2008

The authors, Tom Karygiannis of NIST, and Bernard Eydt, Greg Barber, Lynn Bunn, and Ted Phillips of Booz Allen Hamilton, wish to thank Steven Fick, Rick Korchak, Kate Remley, Jeff Guerrieri, Dylan Williams, Karen Scarfone, and Tim Grance of NIST, and Kenneth Waldrop and Beth Mallory of Booz Allen Hamilton. These individuals reviewed drafts of this document and contributed to its technical content. The authors would also like to express their thanks to several experts for their critical review and feedback on drafts of the publication. These experts include V.C. Kumar of Texas Instruments; Simson Garfinkel of the Naval Postgraduate School; Peter Sand of the Department of Homeland Security; Erika McCallister of MITRE; and several professionals supporting Automatic Identification Technology(AIT) program offices within the Department of Defense(DoD), especially Nicholas Tsougas, Fred Naigle, Vince Pontani, Jere Engelman, and Kathleen Smith. During the public comment period we received helpful comments from the following Federal Government agencies: the US Departments of Defense, Health and Human Services, Homeland Security, Labor, and State; the Office of the Director of National Intelligence; the Office of Management and Budget; and the General Services Administration. We also received several helpful contributions from commercial industry, including comments from EPCglobal, VeriSign, and Priway. Finally, the authors wish to thank the following individuals for their comments and assistance: Brian Tiplady, Daniel Bailey, Paul Dodd, Craig K. Harmon, William MacGregor, Ted Winograd, Russell Lange, Perry F. Wilson, John Pescatore, Ronald Dugger, Stephan Engberg, Morten Borup Harning, Matt Sexton, Brian Cute, Asterios Tsibertzopoulos, Mike Francis, Joshua Slob in, Jack Harris, and Judith Myerson.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.513-518
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• 2001

In recent years, construction information management systems using Information Technology(IT) have been developed in the construction industry. Construction information management plays a significant role in successful project implementation and completion. However, there have been a number of problems in current practice that manually collects and utilizes construction information generated in site. This paper mainly describes a new approach which is able to gather, manage, and accumulate the construction information in real-time using IT tools such as PDA, barcode, RFID, biometrics identification and digital camera. It first reviews the existing applications and their limitations, and potential IT tools for construction data collection and management. It then proposes a utilization method of IT tools for an effective information management in domestic construction site. Conclusions and future research works are also made in this paper,

• Korean Journal of Construction Engineering and Management
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• v.13 no.1
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• pp.77-86
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• 2012

Progress measurement provides project participants with valuable information in terms of 'current status', 'corrective countermeasure', and 'forecast of future risks'. However, the managerial effort (or workload) required to acquire and maintain detailed progress data has been the major barrier to practical implementation. Even though recent efforts in utilizing data acquisition technologies (DATs) have actively attempted to automate the progress measurement process, previous DAT research has only been focused on limited construction tasks or selected technologies. This paper proposes a DAT selection algorithm that automatically assign an appropriate DAT for every commodity item for an entire constriction project. Five different criteria were identified and developed in order to comprehend specific requirements for automating the progress measurement of each commodity group. A case-study and also a survey from practitioners were conducted in order to validate the proposed methodology.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.10a
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• pp.307-309
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• 2013

Diligence/Indolence records are the basic data at a human resource management and the essential data for measure salaries of employees. However, since the D/I systems using RFIDs or biometric sensors require hish costs to build and operate the D/I systems, it is difficult for to small business or self-employed business to use them. In this paper, we propose the Diligence/Indolence system to use the location identification of a smart phon. To locate the position of an employee, the WiFi signal of a smart phone and the wireless access point are exploited. Because the pre-owned hardware resources are used and initial building costs are low, it is easy for small business to use the proposed D/I system with low cost.

• 한국디지털정책학회:학술대회논문집
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• 2005.11a
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• pp.351-364
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• 2005

오늘날은 정보의 홍수라고 표현이 될 만큼 많은 양의 정보를 어디서나 얻을 수 있다. 이러한 많은 양의 정보 중 사람들은 그들이 필요한 정보를 얻기 위하여 인터넷을 사용하며 대부분의 사용자들이 포털 사이트의 검색 서비스를 통하여 그들이 원하는 정보를 검색하고 얻고 있다. 그러나 전통적인 여과 과정을 통해 검증된 인쇄 자원과는 다르게 인터넷상에 있는 자원은 대부분 여과되어 있다고 볼 수 없다. 인터넷상에서 발견되는 정보가 주로 여과되지 않은 상태라는 점을 이해하는 것도 정보를 얻는 사용자 입장에서 매우 중요하다. 그런 의미에서 웹에서는 제공되는 정보에 대한 선정, 조직화, 검색에 대한 표준화가 아직 없기 때문에, 단순히 웹 검색 엔진을 이용한 검색의 결과만을 통해서 원하는 정보를 찾는 것은 쉽 지가 않다(Spink et al, 1999). 비록 원하던 정보를 얻었다 해도 획득한 정보가 신뢰할 만한 것인지를 판단하기가 어렵다. 본 연구에서는 그러한 요구에 부응하기 위해 검색 서비스에 대한 사용자 선호 요인을 선별하고 설문 조사를 통해 검증하고자 한다. 본 연구는 크게 문헌 연구와 실증 연구로 구별되며, 실증 분석에서는 검색 서비스를 사용해 본 경험이 있는 인터넷 사용자를 대상으로 설문을 인터넷 사이트와 설문지를 배부하는 형식으로 진행하여, 통계 패키지를 이용 결과를 분석하였다. 문헌 연구에 따르면 인터넷 사이트를 사용하는데 있어서, 사용자 선호에 영향을 미치는 요인으로 정보 품질, 서비스 연계성, 인지된 유용성, 흥미성, 시스템 품질, UI의 편의성이 있으며 본 연구에서도 이러한 요인을 중심으로 연구 모형을 정하였다. 이러한 요인들에 대하여 가설을 정해 실증 분석을 한 결과, 기본적으로 검색 서비스에 대한 인지된 유용성과 UI의 편의성은 사용자 선호에 영향을 미치는 것으로 나타났다. 반면에 정보 품질, 서비스 연계성, 흥미 성, 시스템 품질은 사용자 선호에 영향을 미치지 못하는 것으로 나타났다. 그러나 정보 품질과 시스템 품질의 결과는 유의 수준에서 크게 넘어가지 않는 결과가 나와 반드시 영향을 미치지 못하는 것은 아니라고 조사되었다. 본 연구는 검색 서비스라는 특정 서비스에 대해서 사용자 선호에 영향을 미치는 요인에 대해서 알아보고자 하였다. 이는 학문적인 측면에서 기존의 통합적인 웹사이트 평가에 대한 연구의 확장을 가능케 하였고, 개인사용자 측면에서는 좀더 좋은 정보를 제공하는 검색 서비스에 대한 이해를 높일 수 있는 계기가 되었다고 할 수 있다.