• 디지털산업정보학회논문지
• /
• 제7권3호
• /
• pp.63-74
• /
• 2011

Credit cards are more convenient than cash of heavy. Therefore, credit cards are used widely in on_line (internet) and off_line in nowadays. To use credit cards on internet is commonly secure because client identification based security card and authentication certificate. However, to use in off_line as like shop, store, department, restaurant is unsecure because of irregular accident. As client identification is not used in off_line use of credit cards, the irregular use of counterfeit, stolen and lost card have been increasing in number recently. Therefore, client identification is urgently necessary for secure card using in off_line. And the method of client identification must be simple, don't take long time, convenient for client, card affiliate and card company. In this paper, we study a reform measure of the structure and transaction process for the safety improvement of a credit cards. And we propose several authentication method of short-and long-term for client identification. In the proposal, the client authentication method by OTP application of smart-phone is efficient nowadays.

• 대한가정학회지
• /
• 제41권12호
• /
• pp.229-243
• /
• 2003

The purpose of this study is to understand North Korean female defectors' survival strategies in China. In this research, 13 female defectors in China were interviewed. There seemed to be 6 survival strategies in the interview. They disguised themselves as if they were Chosunjok；they tried to wear fashionable clothes, to mimic Chosunjok dialect, to speak mingling Chinese words with Korean words, and to get counterfeit ID cards. They suppressed themselves from showing their angers or resentment against Chinese who looked down on them due to their illegal status, but they would seek chances to revenge on them in the future. They have survived by gelling married to Chinese, but they were reluctant to have a baby because it was not for sure what their future lives are going to be like. They were alert against people around them all the time, especially against North Korean defectors, and were conscious of their competitive relationship among themselves. Finally, some of them appeared to seek routes to immigrate to South Korea, but others who didn't yet make up their minds to immigrate to South Korea had vague anticipations of North and South Koreas to be reunified.

• 한국정보통신학회:학술대회논문집
• /
• 한국정보통신학회 2016년도 추계학술대회
• /
• pp.365-367
• /
• 2016

최근 개인정보 보안의 중요성이 부각되고 있다. 특히 음성 인식, 지문 인식, 얼굴 인식등 생체인식 기술의 중요성이 출입통제, 은행보안, 개인 PC 보안 등 다양한 분야에서 강조되고 있다. 하지만 기존의 보안 기술 같은 경우 외부적인 요소에 의해 인식이 실패할 가능성이 있다. 그에 비해 정맥 인식의 경우 복제 및 위조가 불가능하다. 따라서 외부적인 요소에 의해 실패할 가능성이 적다는 장점이 있다. 본 논문에서는 기존의 생체인식 기술보다 높은 신뢰도를 가진 기존의 지정맥 패턴 인식에서 개선된 전처리 방법을 제안한다.

• 한국인터넷방송통신학회논문지
• /
• 제19권2호
• /
• pp.97-102
• /
• 2019

위성항법 시스템은 민간 분야뿐만 아니라 군의 다양한 무기체계에서 위치 및 시각 동기화 등의 중요한 정보를 제공하는 역할을 수행하고 있으며 활용분야와 의존도가 높아지고 있다. 이에 따라, 위성항법 장치를 활용하는 무기체계에 대응하기 위해 전자파를 방사하여 위성항법장치를 기만하고자 하는 연구가 활발히 이루어지고 있다. 위성항법 기만신호는 수신기에 전파 교란신호를 방사하여 항법을 하지 못하도록 하거나 허위 위치와 속도로 오인하도록 유도하는 기술을 의미한다. 그 중 스푸핑 기술은 기만하고자 하는 수신기에서 수신하고 있는 코드 위상/도플러 주파수/항법 메시지와 동기되어 위성항법 신호 대신 기만신호를 획득하고 추적할 수 있도록 신호를 송신해주는 것이다. 본 논문에서는 SDR 수신기를 이용하여 GPS L1 C/A 기만신호에 의한 수신기 추적 알고리즘 영향성을 분석하고 기만 신호에 대한 효과도를 분석하였다.

• 정보보호학회논문지
• /
• 제17권5호
• /
• pp.141-146
• /
• 2007

실생활에서 자동 인식 시스템은 바코드를 이용한 시스템이 대부분을 차지하며, 이러한 바코드 기반 자동 인식 시스템은 바코드의 인식거리에 대한 제한과 보안상의 문제점을 지적 받아왔다. 최근 바코드 기반 자동 인식 시스템보다 저장능력이 뛰어난 비접촉식 무선 주파수 인식(RFID: Radio Frequency Identification) 시스템이 주목을 받고 있으며 많은 연구가 이루어지고 있다. 특히 RFID 시스템은 물리적인 접촉없이 개체에 대한 정보를 인식한다는 점에서 화폐의 위 변조를 확인하는 매체로 사용가능하다. 본 논문에서는 RFID 시스템을 화폐에 적용하여 화폐의 위·변조 여부가 확인 가능한 지급결제시스템을 제안한다. 제안하는 지급결제시스템은 사용자의 프라이버시 침해의 문제를 해결하였으며, 추가적으로 위 변조 화폐의 사용자를 추적할 수 있는 기능을 제공한다.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제16권2호
• /
• pp.424-444
• /
• 2022

In hospitals and pharmacies, the distribution of medicines is an important part. Any mistakes, misses, fake medicines and expired medicines can cause medical accidents. With the widespread application of the Internet of Things technology (IoT), traditional drug distribution methods need to be upgraded. This article proposes a drug distribution management scheme based on the Internet of Things technology. In the production of drugs, a flexible RFID tag was printed on the packaging box, which stored a series of information such as drug name, dosage, raw materials, efficacy, production date, expiration date, and manufacturer. The use of a drug distribution management system combined with RFID readers can identify drug information and effectively prevent the occurrence of erroneous, missed, counterfeit, and expired drugs. It can also improve management efficiency, reduce management costs, and control management risks. Through the circuit design and software system development, the test results show that this solution is effective and feasible, the proposed method can achieve the expected results.

• 한국소프트웨어감정평가학회 논문지
• /
• 제17권1호
• /
• pp.17-24
• /
• 2021

최근 블록체인을 기반으로 하는 미술품 NFT(Non Fungible Token) 시장은 기존 그림 작품 뿐만 아니라 작품을 홀로그램화 하여 거래될 정도로 활성화 되고 있다. 하지만 이렇게 방대한 미술품 시장에서 미확인 작품은 위조 수준이 정교하여서 전문가조차 진품인지 위작인지 판별하기 어렵다는 문제점이 존재한다. 이러한 문제점은 진품이 출품될 시에도 위작으로 의심받을 수 있어 작품 및 작가의 가치하락까지 이어질 수 있다. 이러한 문제를 해결하기 위하여 본 논문에서는 객관적인 분석을 통하여 추출된 데이터 중 색도 Chromaticity 데이터를 4사분면으로 분류하여 비교군과 교점을 추출하고 교점에 해당하는 포인트의 XRF와 초분광 스펙트럼 데이터를 이용하여 미확인 작품의 작가를 추정하는 시스템을 제안한다.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제17권1호
• /
• pp.51-73
• /
• 2023

Social media play a significant role in communicating information across the globe, connecting with loved ones, getting the news, communicating ideas, etc. However, a group of people uses social media to spread fake information, which has a bad impact on society. Therefore, minimizing fake news and its detection are the two primary challenges that need to be addressed. This paper presents a multi-modal deep learning technique to address the above challenges. The proposed modal can use and process visual and textual features. Therefore, it has the ability to detect fake information from visual and textual data. We used EfficientNetB0 and a sentence transformer, respectively, for detecting counterfeit images and for textural learning. Feature embedding is performed at individual channels, whilst fusion is done at the last classification layer. The late fusion is applied intentionally to mitigate the noisy data that are generated by multi-modalities. Extensive experiments are conducted, and performance is evaluated against state-of-the-art methods. Three real-world benchmark datasets, such as MediaEval (Twitter), Weibo, and Fakeddit, are used for experimentation. Result reveals that the proposed modal outperformed the state-of-the-art methods and achieved an accuracy of 86.48%, 82.50%, and 88.80%, respectively, for MediaEval (Twitter), Weibo, and Fakeddit datasets.

• 대한본초학회지
• /
• 제29권6호
• /
• pp.133-140
• /
• 2014

Objectives : Paemo is a phlegm-resolving drug with cold properties and classified 5 kinds which come from 11 species of original plant. All the more, according to literature record, 20 species of original plant were used. As a natural result, these are easily to confuse and there are a lot of counterfeit product. So we are to present a differential standard of Paemo. Methods : It was planed a differential standard form through outer appearance of the original plant and outer appearance in the form of each medicines which was collected local market or field for 11 species which is listed in Korea or China pharmacopeia. Results : It was possible to distinguish the orignal plant between Fritillaria and Bolbostemma through its stem shape. In Fritillaria of original plant, it was possible to distinguish through its width of leaf, number of leafy bracts, color and position of flower and shape of leaf apex. In outer appearance in the form of each medicines, there are difference in color and texture of medicine between Fritillaria and Bolbostemma and there are difference in size, shape, size of inner and outter fleshy leaf of bulb, pattern of surface and apex of fleshy leaf of bulb among 10 Fritillaria species. Conclusions : This study presents various differences in the outer appearance of the original plant and the outer appearance in the form of each medicines among Paemo. It will be helpful to further applied research.

• 셀메드
• /
• 제5권1호
• /
• pp.3.1-3.3
• /
• 2015

Pharmacovigilance is the study of the safety of drugs under the practical conditions of clinical usage in large communities. Aim of this study was to assess the pharmacovigilance awareness among a focus group of Ayurveda physicians in Sri Lanka who participated for their postgraduate studies. A questionnaire which was suitable for assessing the basic knowledge, attitude and the practice of pharmacovigilance was designed and submitted among group of Ayurveda physicians (n = 30) who participated for postgraduate studies in Institute of Indigenous Medicine, University of Colombo, Sri Lanka. Among participants30% of the subjects knew the term pharmacovigilance, 20% were aware of the unavailability of the National Pharmacovigilance Program for Ayurveda and Traditional Medicine in Sri Lanka, 70% believe about Adverse Drug Reactions (ADRs) may be occurred from Ayurveda medicine, 60% indicated that Most labeled counterfeit drugs, inappropriate use and standardization problems as the most important causes of ADRs associated with Ayurvedicdrugs, 70% physicians accepted their ignorance about pharmacovigilance and admitted that there was a need for better training of this subject and 90% admitted that there should be a national pharmacovigilance programme for Ayurveda medicines in Sri Lanka. We strongly suggest that there is an urgent need for a regular training and the introduce ADRs reporting system among the Ayurveda physicians. Also systematic pharmacovigilance programme is essential to build up for reliable information on the safety and effective practice of Ayurveda medicine in Sri Lanka.