• Journal of the Institute of Electronics Engineers of Korea SD
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• v.45 no.4
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• pp.64-71
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• 2008

SAW (Surface Acoustic Waves) ID (identification) tags have been designed and implemented for RFID (Radio frequency IDentification) systems. With SAW ID tag of pulse position encoding method, the data capacity increased 3 times compared with SAW ID tag of amplitude on/off method. Two different kinds of SAW ID tag receiver systems, heterodyne and homodyne receiver systems, were made. The direct conversion receiver showed better isolation property, 10 dB improvement than the heterodyne receiver to increase wireless interrogation distance.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.7 no.4
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• pp.642-648
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• 2006

In this paper, I have proposed a secure dynamic ID allocation protocol using mutual authentication on the RFID tag. Currently, there are many security protocols focused on the low-price RFID tag. The conventional low-price tags have limitation of computing power and rewritability of memory. The proposed secure dynamic ID allocation protocol targets to the high-performance RFID tags which have more powerful performance than conventional low-price tag by allocating a dynamic ID to RFID using mutual authentication based on symmetric encryption algorithm. This protocol can be used as a partial solution for ID tracing and forgery.

• Toxicological Research
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• v.18 no.4
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• pp.385-391
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• 2002

The genotoxic potential of Hyrubicin lD6105, a novel anthracycline anticancer agent, was examined on bacterial mutagenicity, mammalian cell chromosome aberration and mouse micronucleus tests. In mutagenicity (Ames') test, Salmonella typhimurium strain TA98, TA100, TA1535 and TA1537, and Escherichia coli WP2uvrA- were treated with ID6105 at doses of 312.5, 625, 1,250, 2,500 and 5,000 $\mu\textrm{g}$/ plate with or without a metabolic activation system (S9 mix). Interestingly, ID6105 significantly enhanced the number of revertant colonies of TA98 strain at all dose levels used, in the presence or absence of S9 mix, without affecting other strains of S. typhimurium and E. coli. In chromosome aberration test using cultured chinese hamster lung fibroblasts, ID6105 (1.25, 2.5 and 5 $\mu\textrm{g}$/ml) did not increase the number of aberrant cells, compared with vehicle control. in the presence or absence of S9 mix. In addition, ID6105 treatment (2.5, 5 and 10 mg/kg) did not induce micronucleated polychromatic erythrocytes in mice. Taken together, it is suggested that ID6105 might not affect chromosome integrity in mammalian system in vitro and in vivo, although it may induce frame shift mutation of specific bacterial strain such os S. typhimurium TA98.

• Review of KIISC
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• v.21 no.4
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• pp.14-21
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• 2011

국제표준화기구 ISO와 ITU-T에서는 ID 관리 기술 관련 표준화를 리드하는 연구그룹을 운용하여 이 분야의 표준화를 주도하고 있다. ID 관리 기술의 표준화를 ISO가 먼저 시작하였으나 현재는 ITU-T가 보다 더 다양한 분야에서 폭넓게 표준 개발을 진행하고 있다. 현재 ID 관리 기술은 기존의 ID 관리 시스템들 간의 상호호환성을 제공하려는 기술에 초점이 맞추어 개발되고 있고 사용자의 개인정보를 공유할 시에는 사용자 중심의 프라이버시 기술을 제공하는 방향으로 진행되고 있다. 본 논문에서는 현재 ISO 및 ITU-T에서 이미 표준화된 ID 관리 관련 국제표준들과 개발 중에 있는 표준초안들에 대해 간단히 소개하고, 기타 다른 표준화 기구들의 동향을 파악하여 향후 추진방향을 제시하고자 한다.

• Journal of Aerospace System Engineering
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• v.17 no.4
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• pp.133-143
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• 2023

As drones (also known as UAV) become popular with advanced information and communication technology (ICT), they have been utilized for various fields (agriculture, architecture, and so on). However, malicious attackers with advanced drones may pose a threat to critical national infrastructures. Thus, anti-drone systems have been developed to respond to drone threats. In particular, remote identification data (R-ID)-based UAV detection and identification systems that detect and identify illegal drones with R-ID broadcasted by drones have been developed, and are widely employed worldwide. However, this R-ID-based UAV detection/identification system is vulnerable to security due to wireless broadcast characteristics. In this paper, we analyze the security vulnerabilities of DJI Aeroscope, a representative example of the R-ID-based UAV detection and identification system, and propose a replay-attack-based neutralization method using the analyzed vulnerabilities. To validate the proposed method, it is implemented as a software program, and verified against four types of attacks in real test environments. The results demonstrate that the proposed neutralization method is an effective neutralization method for R-ID-based UAV detection and identification systems.

• Journal of electromagnetic engineering and science
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• v.8 no.4
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• pp.139-143
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• 2008

In this paper, a new scheme to calculate the weighting factor of the 2-D isotropic-dispersion finite difference time domain(ID-FDTD) is proposed. The weighting factor in [1] was formulated in free space, so that it may not be optimal in dielectric media. Therefore, the weighting factor was reformulated by considering the material properties and using the least mean square method. As a result, a minimum numerical dispersion error for any dielectric media is guaranteed.

• The KIPS Transactions:PartA
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• v.10A no.4
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• pp.419-424
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• 2003

Every CP has its own contents classification system for charging. Currently most classification system is based on the CPID and Service ID of the WAP. An service ID from a common CPID pool is provided to CP for each service. Then charges are computed for each service ID. But in this system CPID range must be changed whenever the CP adds a new service. Therefore all CPIDs of the existing services must be updated. Another problem is that when a CP provides several services, it has multiple CPIDS. Therefore with increasing number of services CPID would be exhausted in the future. In this paper, we proposes a new contents ,classification system. We remove CPID range and instead we propose a new CPID composed of a system n, service classification ID and a serial number. The new CPID is assigned to each service. By this scheme we improve the contents classification system.

• Journal of Digital Contents Society
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• v.19 no.9
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• pp.1671-1677
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• 2018

The advertisement market is an industry that is heavily influenced by media changes. As the digital broadcasting has settled, TV, a typical advertisement medium, has evolved from a passive content consuming medium into a platform for operating various data services as well as broadcasting programs. These changes mean that viewers are able to actively consume TV contents including advertisement, so the broadcasting industry needs to consider about the growth strategies that link the advertisement market with data services. This study designed a digital broadcasting data service that provides supplementary information of ID advertisement with short exposure time (less than 10 seconds) and insufficient space (less than 1/4 of TV screen). Specifically, we designed the user scenario and user interface of the data service, defined representative types of ID advertisement and the supplementary information for each type, developed a method, based on the international digital broadcasting standard DVB, for providing the supplementary information to the data service.

• Korean Journal of Food Science and Technology
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• v.53 no.2
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• pp.160-164
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• 2021

This study investigated various physiological activities to examine the applicability of the functional materials of Allium tuberosum root extract. The A. tuberosum root extract showed a low cytotoxicity against murine melanoma B16F10 cells. It also showed high DPPH radical scavenging activity (ID50, 6.2 ㎍/mL), inhibited tyrosinase activity (ID50, 115.4 ㎍/mL), and decreased melanin content (ID50, 31.5 ㎍/mL). Treatment of B16F10 cells with A. tuberosum root extract suppressed the protein expression of tyrosinase in a dose-dependent manner. These findings suggest that A. tuberosum root extract inhibits melanin synthesis by suppressing intracellular tyrosinase expression. Additionally, A. tuberosum root extract inhibited elastase with an ID50 value of 145.1 ㎍/mL and contained isoquercitrin. These results indicate that A. tuberosum root extract is an appropriate natural material.

• Journal of the Korean Society of Food Science and Nutrition
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• v.25 no.4
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• pp.560-567
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• 1996

The present study was undertaken to evaluate the effect of indigestible dextrin on bowel function and serum lipid. Recently developed indigestible dextrin is water soluble dietary fiber obtained by heating and enzyme-treatment of potato starch with low viscosity. SD male rats weighing 80~85g were divided into three groups; control diet(IC), control +5% pectin(IP), control +5% indigestible dextin(ID). Experimental rats were fed one of the experimental diets ad libitum for six weeks. Weight gain, food intake, and food efficiency ratio were not significantly different among other groups. Those of ID tended to be higher than in IP and IC. Weights of liver, spleen and kidney were not significantly different among groups. Epididymal fat pads weight in W and ID tended to be lower than in IC. The weight of cecum was sinificantly higher in m than in other groups(p<0.05). The weight and length of large intestine tended to be higher in IP and ID than in IC. Total feces excretion of ID and If tended to be more than that of IC. Transit time was shorter in IP than in other groups. Serum total lipid, total cholesterol and TG levels were higher in IC group than other groups. The fecal excretion of lipid was significantly higher in IP than in other groups(p<0.05). That of ID tended to be more than that of IC, so fat apparent absorption of ID was lower than that of IC. Ca absorption were decreased more in IP than in other groups(p<0.05).