• Journal of the Korean Society for Industrial and Applied Mathematics
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• v.21 no.3
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• pp.181-202
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• 2017

In this paper, we develop a mobile platform for pricing equity linked securities(ELS) using Monte Carlo simulation. Mobile phone or smartphone is an important part of most people's lives and has become an everyday item at the present day. Moreover, importance of technologies for anytime and anywhere is increasing daily. Thus, we construct a mobile computing environment for pricing ELS instead of desktops or laptop computers. We provide a detailed Java programming code and a process manual to easily follow up all processes of this paper.

• Proceedings of the Korean Information Science Society Conference
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• 2003.04d
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• pp.644-646
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• 2003

본 논문은 현재 각각의 운영체제에서 운영 및 구현되고 있는 Mobile Node들의 의존성을 최소화하여 설계하고 이를 개발한다. Mobile IP의 RFC 2002를 준수하여 Mobile Node를 운영하는 방법을 설계하여 Mobile Node에 이동성을 제공한다. 여기에는 각각 운영체제만의 특정 코드상의 특징을 제외하고 설계된 기본적인 모듈들을 사용하는 방식을 통해 제안하고, 이에 해당하여 사용되는 이동 에이전트인 HUT code를 수정, 보안한다. 이 설계방식을 가볍게 하여 PC기반의 Linux부터 현재 가장 범용적으로 사용되고 있는 Windows계열의 운영체제 및 휴대성을 강조한 PDA상의 Windows CE에서까지 개발한다.

• Proceedings of the Korea Contents Association Conference
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• 2008.05a
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• pp.591-594
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• 2008

Currently RFID code systems are classified into ISO, EPC, uCode, KKR code, Mobile RFID code, and etc. According to RFID code systems, RFID system is changed. For various RFID code systems, it's difficult to make it to the network and permanence of RFID business. And the existing system isn't add new RFID code systems to RFID system, and change it efficiently. This paper is proposed to a system of Multi RFID code Identification Translation using Ontology. This system is able to identify code data from RFID reader using ontology build into the identifier info and translation info of RFID code systems, and translate to URN data. Therefore in case of extending and changing RFID code systems, we can add and change the identifier info and translation info of RFID code systems in ontology.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.38C no.10
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• pp.841-851
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• 2013

Mobile RFID/NFC linkage technology means a provision of integrated 2 existing mobile RFID services by developing the 900MHz mobile RFID reader and the NFC reader/tag into one SoC to be put on a USIM card. In this paper, the mobile RFID related technologies that offer similar services as NFC were also analyzed to understand the potential linkage to NFC and the requirements for the linkage. In addition, the introduction of dual tag and the code system linkage suggested a linking method to maximally use the existing infrastructure and the requirement satisfaction was analyzed. Lastly, based on the analysis, the future direction for the new standard design was suggested.

• Proceedings of the Korean Society of Computer Information Conference
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• 2013.01a
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• pp.269-270
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• 2013

본 논문에서는 바코드와 QR 코드에 대해서 비교 및 활용을 나타내었다. 최근 모바일기기 사용 확대와 휴대 편리성으로 휴대폰의 편리성이 증가하면서 QR 코드의 사용이 대두되고 있다. 바코드는 1차원 코드로서 물류 및 판매정보관리시스템(POS)에서 널리 사용되었지만 정보량의 한계성을 가지고 있다. 이에 QR는 다층형 코드로서 바코드에 비해서 정보량과 정보의 종류에서 다양하게 이용될 수 있다. 또한 최근 휴대폰의 앱 기능의 활발한 이용으로 결제시스템, 명함, 웹, 이메일, 홍보, 멀티미디어 등 다양한 영역에서 QR 코드의 활용이 상당히 빈번하게 이용 될 것으로 사료한다.

• Proceedings of the IEEK Conference
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• 2000.11a
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• pp.457-460
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• 2000

The effect of code selection for a multicode DS/CDMA system is evaluated for a high deta rate transmission, The performance is evaluated in terms of bit error and outage probabilities. The multipath fading channel is modeled as a Nakagami-m distribution which has been known to be appropriate to model the multipath fading in urban as well as indoor channels. From simulation results, it is shown that the concatenated sequence of Walsh code and Gold sequence is most promising among many code selections. The considerations in this paper can be applied to the next-generation mobile communication systems such as IMT-2000 which requires high bit rate transmissions.

• Proceedings of the Korean Information Science Society Conference
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• 2005.07b
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• pp.16-18
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• 2005

We show how to rapidly build a framework supporting weak code mobility by using Active XML [I]. Weak code mobility is important in mobile applications area by offering functionality at a low bandwidth cost and with little overhead imposed to the user peer architecture. Starting from already known principles involving code nobility, we give a new definition for the functionality transfer p개cess and we materialize it in a working prototype.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.6 no.5
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• pp.762-767
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• 2002

In this paper, We suggest Credit Card and On-line Financial Business Method Using on Wireless Terminal. First, wireless mobile terminal of credit card member is received suity code from dealing verification system of credit card company. Second, a credit card member give security code to member store. Third, the security code is compared with security code of the member in dealing verification system of credit card company.

• Journal of Advanced Navigation Technology
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• v.17 no.5
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• pp.545-551
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• 2013

Packed technique makes difficult to respond quickly because the malicious-code is reduced size that easy to diffusion and changed code that make spend longer time for analysis. In this paper, we analysed the packing tool softwares and we proposed construction and detection methods of the packed technique for easy to analysis of the packed malicious code based on variation of entropy value.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.17 no.7
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• pp.641-655
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• 1992

In this paper, the performance of the various multiple accesstechniques for the mobile computer network has been studied in the consideration of the characteristics. Of the mobile communication channel. In the case of the hidden node occurring, it could be seen that the performance of the code division multiple access(CDMA) technique. With simultaneous access function is better than that of the other packet access methods such as carrier sensed multiple access(CAMA). Busy tone mulitiple access(BTMA)and idle signal muitiple access(ISMA) in the view of the throuhtput and mean delay time. Also it has been shown that the performance of the CDMA method is superior to that of other packet access techniques such as multiple access(CSMA).etc when the fading effect or impulsive noise exists in the mobile channel. Especially in the case of the distributed mobile network. It has been shown that the receiver-transmitter based CDMA method using the characteristics of CDMA effectively has better throughput and less mean delay time than the commontransmitter based CDMA technique.