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Authentication Protocol Of The Read Only RFID Tag Using Partial ID (부분 ID를 이용한 읽기전용 RFID태그 인증프로토콜)

  • Li, Yong-Zhen;Jeong, Yonn-Su;Seo, Dong-Il;Lee, Sang-Ho
    • The KIPS Transactions:PartC
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    • v.13C no.5 s.108
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    • pp.595-600
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    • 2006
  • Nowadays, low-cost radio frequency identification (RFID) technique, is recognizable without the physical contact between the reader and the tag, has been attracting more and more interests from both industry and academic institutes. however, it causes the serious privacy infringement such as excessive information exposure and user's location information tracking due to the wireless characteristics. The security problem of read only tag can be only solved by physical method. In this paper, we propose a low-cost authentication protocol which can be adopted for read-only RFID tag using XOR and Partial ID. The proposed protocol is secure against reply attacking, eavesdropping and spoofing attacking so that avoiding the location privacy exposure

The resistance characterization of OTP device using anti-fuse MOS capacitor after programming (안티퓨즈 MOS capacitor를 이용한 OTP 소자의 프로그래밍 후의 저항특성)

  • Chang, Sung-Keun;Kim, Youn-Jang
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.13 no.6
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    • pp.2697-2701
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    • 2012
  • The yield of OTP devices using anti-fuse MOS capacitor have been affected by the input resistance, the size of the pass transistor and the read transistor, and the readout voltage of programed cell. To investigate the element which gives an effect to yield, we analyze the full map data of the resistance characterization of OTP device and those data in a various experimental condition. As a result, we got the optimum conditions which is necessary to the yield improvement. The optimum conditions are as follows: Input resistance is 50 ohms, the channel length of pass transistor is 10um, read voltage is 2.8 volt, respectively.

Disturbance Minimization by Stress Reduction During Erase Verify for NAND Flash Memory (반복된 삭제/쓰기 동작에서 스트레스로 인한 Disturbance를 최소화하는 플래쉬 메모리 블록 삭제 방법)

  • Seo, Juwan;Choi, Min
    • KIPS Transactions on Computer and Communication Systems
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    • v.5 no.1
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    • pp.1-6
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    • 2016
  • This paper focuses on algorithm innovation of NAND Flash Memory for enhancing cell lifetime. During flash memory read/write/erase, the voltage of a specific cell should be a valid voltage level. If not, we cannot read the data correctly. This type of interference/disturbance tends to be serious when program and erase operation will go on. This is because FN tunneling results in tunnel oxide damage due to increased trap site on repetitive high biased state. In order to resolve this problem, we make the cell degradation by reducing the amount of stress in terms of erase cell, resulting in minimizing the cell disturbance on erase verify.

The Effects of Alphabet Knowledge on Korean Kindergarteners' Reading of Hangul Words (한글 자음과 모음에 대한 유아의 지식이 단어 읽기에 미치는 영향)

  • Choi, Na-Ya;Yi, Soon-Hyung
    • Journal of Families and Better Life
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    • v.25 no.3 s.87
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    • pp.151-168
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    • 2007
  • The purpose of this study was to investigate the causal relationship of kindergarteners' alphabet knowledge to their ability to read words, in connection with the features of the Korean alphabet 'Hangul'. A total of 289 children aged four to six from three kindergartens in Busan participated in the study. The main results are as follows. To begin with, the participants showed continuous development in the knowledge of consonant names, vowel sounds, the vowel stroke-adding principle, and the alphabet composition principle. Meanwhile, discontinuous development was found in the knowledge of consonant sounds and the consonant stroke-adding principle, which indicated that kindergartners could show differential speed in various sub-skills of literacy development. The kindergartners' naming of consonants developed before their recall of consonant sounds, and the knowledge of consonant sounds had an effect on the knowledge of vowel sounds. Children had difficulty in treating more complicated letters of the alphabet stroke-adding principle test, and eve syllables of the alphabet composition principle test. Most importantly, the children's alphabet knowledge was strongly related to their ability to read words written in Hangul, as kindergarteners with a greater knowledge of alphabet names, sounds, and principles were shown to read words better.

Fast, Flexible Text Search Using Genomic Short-Read Mapping Model

  • Kim, Sung-Hwan;Cho, Hwan-Gue
    • ETRI Journal
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    • v.38 no.3
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    • pp.518-528
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    • 2016
  • The searching of an extensive document database for documents that are locally similar to a given query document, and the subsequent detection of similar regions between such documents, is considered as an essential task in the fields of information retrieval and data management. In this paper, we present a framework for such a task. The proposed framework employs the method of short-read mapping, which is used in bioinformatics to reveal similarities between genomic sequences. In this paper, documents are considered biological objects; consequently, edit operations between locally similar documents are viewed as an evolutionary process. Accordingly, we are able to apply the method of evolution tracing in the detection of similar regions between documents. In addition, we propose heuristic methods to address issues associated with the different stages of the proposed framework, for example, a frequency-based fragment ordering method and a locality-aware interval aggregation method. Extensive experiments covering various scenarios related to the search of an extensive document database for documents that are locally similar to a given query document are considered, and the results indicate that the proposed framework outperforms existing methods.

The realization of English rhythm by Busan Korean speakers

  • Choe, Wook Kyung
    • Phonetics and Speech Sciences
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    • v.11 no.4
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    • pp.81-87
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    • 2019
  • The purpose of the current study is to investigate the realization of speech rhythm in English as spoken by Korean learners of English. The study particularly aims to examine the rhythm metrics of English read speech by learners who speak Busan or the South Kyungsang dialect of Korean. Twenty-four learners whose L1 is Busan Korean and eight native speakers of English read a passage wherein five sentences were segmented and labeled as vocalic and intervocalic intervals. Various rhythm metrics such as %V, Varcos, and Pairwise Variability Indexes (PVIs) were calculated. The results show that Korean learners read English sentences with significantly more vocalic and consonantal intervals at a slower speech rate than native English speakers. The analyses of rhythm metrics revealed that when the speech rate was not normalized, Korean learners' English showed more variability in the length of consonantal and vocalic intervals. However, speech-rate-normalized rhythm metrics for vocalic intervals indicated that Korean learners transferred their L1 rhythmic structures (a syllable-timed language) into their L2 speech (a stress-timed language). Overall, the results suggest that Korean learners' English reflects the rhythmic characteristics of their L1. The effect of the learners' L1 dialect on the realization of L2 speech rhythm is also speculated.

Register-Based Parallel Pipelined Scheme for Synchronous DRAM (동기식 기억소자를 위한 레지스터를 이용한 병렬 파이프라인 방식)

  • Song, Ho Jun
    • Journal of the Korean Institute of Telematics and Electronics A
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    • v.32A no.12
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    • pp.108-114
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    • 1995
  • Recently, along wtih the advance of high-performance system, synchronous DRAM's (SDRAM's) which provide consecutive data output synchronized with an external clock signal, have been reported. However, in the conventional SDRAM's which utilize a multi-stage serial pipelined scheme, the column path is divided into multi-stages depending on CAS latency N. Thus, as the operating speed and CAS latency increase, new stages must be added, thereby causing a large area penalty due to additinal latches and I/O lines. In the proposed register-based parallel pipelined scheme, (N-1) registers are located between the read data bus line pair and the data output buffer and the coming data are sequentially stored. Since the column data path is not divided and the read data is directly transmitted to the registers, the busrt read operation can easily be achieved at higher frequencies without a large area penalty and degradation of internal timing margin. Simulation results for 0.32um-Tech. 4-Bank 64M SDRAM show good operation at 200MHz and an area increment is less than 0.1% when CAS latency N is increased from 3 to 4.. This pipelined scheme is more advantageous as the operating frequency increases.

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Readability of Health Messages and Its Communicative Effect (건강 메시지의 독이성과 소통 효과)

  • You, Myoung Soon;Ju, Young Kee
    • Korean Journal of Health Education and Promotion
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    • v.29 no.5
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    • pp.27-36
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    • 2012
  • Objectives: Developing efficient health messages is important for improving health behaviors at a societal level. This study attempts to test a few variables that could constitute the elements for measuring readability of health message. The number of subject-verb relationships in a sentence, placement of jargon, i.e., explication before or after each jargon, and the number of less familiar Chinese characters were manipulated to hypothetically differentiate readability. Methods: In a $2{\times}2$ mixed factorial experiment, 152 college students read two health messages regarding side effect of health functional food and energy drink. The participants' perceived readability was asked, and eight questions were developed to measure the participants' recognition of the health information. Results: Those who read messages manipulated to have high readability rated the message significantly higher than those who read messages with low readability. Also, the former answered the questions more correctly than the latter, implying the association between readability and knowledge acquisition regarding health. Conclusions: Readability is suggested as a factor determining the effect of health messages in affecting the public's health risk perception and relevant behaviors. Further studies to sophisticate the measurement itself and to examine the effect of actual public messages with different readabilities are suggested.

Factors Relating to Use of Food Labels among Adults with Metabolic Syndrome (대사증후군 성인의 영양표시 이용실태 및 관련요인)

  • Kim, MyoSung;Kim, JungSoon;Yu, JungOk
    • Korean Journal of Health Education and Promotion
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    • v.29 no.5
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    • pp.1-12
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    • 2012
  • Objectives: Dietary modifications are common treatment strategies for adults with metabolic syndrome, but it is unclear how often these individuals read food labels. The objective of this study was to examine if adults with metabolic syndrome read food labels when buying packaged foods and to determine factors related to label use. Methods: From the database of the Fifth Korean National Health and Nutrition Examination Survey(KNHANES-V), 1,335 adults with metabolic syndrome and 3,696 those without were selected. Data were analyzed using frequency distributions, $X^2$ test and multiple logistic regression with the SPSS win 18.0 program. Results: Adults with metabolic syndrome read food labels less than individuals without it when they purchase packaged foods(12.5% vs 29.0%). Among those without metabolic syndrome, food label use was significantly higher among participants who were women, younger, educated, and trying to control weight. Conclusions: Strategies to use food label as a diet management tool for metabolic syndrome are needed.

New Control System Aspects for Supporting Complex Data and High Performance System

  • Yoo, Dae-Seung;Tan, Vu Van;Yi, Myeong-Jae
    • Journal of Computing Science and Engineering
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    • v.2 no.4
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    • pp.394-411
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    • 2008
  • The data in automation and control systems can be achieved not only from different field devices but also from different OPC (OLE for Process Control) servers. However, current OPC clients can only read and decode the simple data from OPC servers. They will have some problems to acquire structured data and exchange the structured data. In addition to the large network control systems, the OPC clients can read, write, and subscribe to thousands of data points from/to OPC servers. Due to that, the most important factor for building a high performance and scalable industrial control system is the ability to transfer the process data between server and client in the most efficient and fastest way. In order to solve these problems, we propose a means to implement the OPC DA (Data Access) server supporting the OPC complex data, so that the OPC DA clients are able to read and decode any type of data from OPC servers. We also propose a method for caching the process data in large industrial control systems to overcome the limitation of performance of the pure OPC DA system. The performance analysis and discussion indicate that the proposed system has an acceptable performance and is feasible in order for applying to real-time industrial systems today.