• The Transactions of the Korean Institute of Electrical Engineers P
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• v.54 no.4
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• pp.217-223
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• 2005

In this paper, we 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.

• Communications of the Korean Mathematical Society
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• v.9 no.4
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• pp.961-973
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• 1994

A stochastics process $X = {X(t) : t \in T}$, with an index set T, is said to be infinitely divisible (ID) if its finite dimensional distributions are all ID. An ID process X is said to be a stochastic integral process if $X = {X(t) : t \in T} =^D {\int f_td\Lambda : t \in T}$ where $f : T \times S \to R$ is a deterministic function and $\Lambda$ is an ID random measure on a $\delta$-ring S of subsets of an arbitrary non-empty set S with the property; there exists an increasing sequence ${S_n}$ of sets in S with $U_n S_n = S$. Here $=^D$ denotes equality in all finite dimensional distributions.

• Journal of The Korean Association of Information Education
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• v.20 no.6
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• pp.655-672
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• 2016

The purpose of this study was to investigate the effects of prior-knowledge level and supportive information types in web-based learning using 4C/ID model(Four-Components Instructional Design model) on cognitive load and schema acquisition. To achieve the purpose, this study applied a web based learning. 166 university students participated in web-based learning for 4 weeks. After web-based learning, they checked self report for cognitive load and made concept map for schema acquisition and the datum from them were used for 2 ways ANOVA. According to the findings, groups in prior-knowledge level invested significantly differences on cognitive load and a question group in case of supportive information types didn't invested significant differences on cognitive load with statement group. Second, groups in prior-knowledge level invested significantly differences on schema acquisition and a question group in case of supportive information types invested significantly higher schema acquisition than a statement group. Furthermore, it happened interaction effect between supportive information types and prior-knowledge level on schema acquisition. This research has several implications with regard to suggesting the guidelines and conditions for the authentic task of the novice.

• Review of KIISC
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• v.19 no.4
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• pp.78-84
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• 2009

최근 인터넷의 급속한 보급으로 인해 많은 정보가 네트워크를 통해서 전송되고 있는 가운데 보안상의 위험을 고려하여 비밀정보를 암호화하여 전송한다. 본 논문에서는 비밀정보를 안전하게 보내기 위해 ID기반 암호방식을 이용하여 암호화된 데이터의 공유와 권한관리에 대하여 검토하고자 한다.

• Journal of Veterinary Clinics
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• v.36 no.3
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• pp.150-154
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• 2019

The purpose of this study was to investigate the etiological distribution, therapeutic outcome, and survival time in canine epilepsy. The medical records of 57 epileptic dogs were reviewed for the evaluation of etiological distribution. Among them, 27 dogs (47%) and 30 dogs (52%) had idiopathic epilepsy (IdE) and structural epilepsy (StE), respectively. Twenty-nine dogs (IdE: 16 dogs, StE: 13 dogs) were evaluated for therapeutic outcome and survival time. The incidence of generalized epileptic seizure (IdE, 56% vs. StE, 44%; P = 0.043) and the median seizure frequency at the time of first presentation (IdE, 2.0/month vs. StE, 13.3/month; P < 0.01) were significantly different between the two groups. Although pre-treatment seizure frequency and duration were not different, the median duration of seizure in the IdE group (0.5 min) was significantly shorter than that in the StE group (3 min) after treatment (P < 0.01). In addition, the median frequency of seizure was relatively lower in the IdE group (0.25/month) compared to the StE group (2.00/month) following antiepileptic therapy (P = 0.053). The median survival time of the IdE group (1.5 years [95% CI, 1.0-2.3 years]) was significantly longer than that of the StE group (0.4 year [95% CI, 0.2-1.3 years]) (P < 0.01). The information on etiological data and intracranial lesions may be useful for predicting treatment response and prognosis in epileptic dogs.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.17 no.6
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• pp.57-64
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• 2007

As a ubiquitous environment approaches and the use of the wireless Internet using the mobile terminals is on the increase. Therefore, the users have to undergo the inconvenience of repeatedly input the same information for the user registration and the ID certification. The information the users have to put in to register in on-line services range from the basic personal information to the more other private information such as financial information. Accordingly the user can be in control of users personal information and safely manage the information by conveniently selecting from the Digital ID Wallet the Ticket that holds various information including the basic, financial or payment certification-related information. Consequently, we propose a digital identity management mechanism to control one's personal information in a mobile environment.

• Journal of Microbiology and Biotechnology
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• v.18 no.2
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• pp.308-313
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• 2008

Ixeris dentata (ID, family Asteraceae), called Seumbakuy in Korea, was fermented with lactic acid bacteria (LAB) and their antiallergic activities were investigated. Fermentation of ID with Bifidobacterium breve or Lactobacillus acidophilus increased its inhibition of degranulation in RBL-2H3 cells induced by the IgE-antigen complex. Oral administration of these extracts to mice inhibited the passive cutaneous anaphylaxis (PCA) reaction induced by the IgE-antigen complex and scratching behaviors induced by compound 48/80. The fermented ID more potently inhibited the PCA reaction and scratching behaviors than the non-fermented one. These extracts also inhibited mRNA expression of TNF-${\alpha}$ and IL-4, as well as NF-${\kappa}B$ activation in RBL-2H3 cells induced by the IgE-antigen complex. These findings suggest that LAB fermentation improves ID-mediated inhibition of IgE-induced allergic diseases such as rhinitis and asthma, and that ID works by inhibiting degranulation and NF-${\kappa}B$ activation in mast cells and basophils.

• Journal of Oral Medicine and Pain
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• v.20 no.1
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• pp.79-87
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• 1995

Personality characteristics of third decade female TMD patients was studied by means of SCL-90-R test. 112 TMD patients and 96 dental controls were subjected at the department of Oral medicine, Kyungpook National University Hospital. All the patients were divided into 3 groups according to their pain profile namely, MPDS, ID with Pain and ID with out Pain, and dental controls were divided into 2 groups manely, Dental Controls with Pain and Dental Controls without Pain for comparison. The obtained results were as follows : 1. Mean T-scores of SCL-90-R primary scales and global indexes in the patient and control group were within normal range. 2. When compared between groups with pain, MPDS group were significantly higher in scales of SOM, 0-C, I-S, HOS and PHOB than ID with Pain group and in scales of SOM, I-S. DEP, HOS and PHOM than Dental Controls with Pain group. 3. When compared with ID and Control groups in same pain condition, there were no significant differences between ID without pain and Dental Controls without Pain group. 4. When compared between groups with pain and groups without pain, there were significant differences in scales of SOM and O-C between Dental Controls with Pain and Dental controls without Pain group.

• Proceedings of the KIEE Conference
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• 2003.04a
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• pp.402-404
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• 2003

Radio frequency identification (RF-ID) is an automatic data capture (ADC) technology that comprises small data-carrying device(is called Tag) and fixed or mobile device(is called reader). Tags are attached or deattached device. Readers may be installed at locations where data capture is required, and may also be in the form of portable readers. In this paper, we are proposing an application for the subway station using the RF-ID system and a system for the gateless fare collection passing through the booth in only carrying the card. In this system that RF-ID system and Bluetooth are applied. We designed two wireless communication channels. One is the 125kHz communication channel by FSK and PSK for power supplying on the card and identification and the other is 2.4GHz channel for the collection.

• Review of KIISC
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• v.32 no.4
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• pp.49-59
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• 2022

메타버스는 가상, 초월을 의미하는 '메타(meta)'와 세계, 우주를 의미하는 '유니버스(universe)'의 합성어로 현실 세계를 초월한 디지털 세계라고 정의할 수 있다. 이러한 메타버스는 현실 세계와 평행한 디지털 세계의 구축을 시작으로 블록체인(Blockchain), 인공지능(AI) 등의 기술과 고성능 웨어러블 디바이스(Wearable Device) 기반의 높은 몰입감을 제공하여 현실과 상호 작용하는 디지털 세계로 진화하고 있다. 이에 따라, 현재의 메타버스는 기존의 디지털 세계를 구축하고 활용하는 다양한 서비스가 포함된 개념으로 확장되고 있으며, 최종적으로는 현실과 디지털 세계의 경계가 없는 초현실적인 세계로 발전할 것이다. 이러한 메타버스 발전의 뒤에는 많은 보안 기술들이 필요하며, 실제 개인의 프라이버시 문제 및 보안 위협에 대한 우려가 증가하고 있다. 특히, 높은 몰입감을 제공하기 위해 이전보다 더욱 다양한 생체정보를 포함한 개인정보가 사용될 것이며, 이러한 데이터는 개인을 특정하는 ID(Identity)로 활용될 수 있다. 이에, 개인정보에 대한 보안 위협은 더욱 다양해질 것이고, 동시에 안전한 개인정보 활용이 가능한 ID 관리 기술개발의 필요성도 높아질 것이다. 따라서, 본 논문에서는 메타버스의 개념과 함께 진화 과정을 제시하고, 메타버스의 진화에 따라 다양해지는 ID 관련 보안 위협 및 대응 기술을 분석을 통해 ID 관리 기술의 현황을 정리한다.