• Title/Summary/Keyword: Test pattern ordering

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A Fault Dropping Technique with Fault Candidate Ordering and Test Pattern Ordering for Fast Fault Diagnosis (고속 고장 진단을 위해 고장 후보 정렬과 테스트 패턴 정렬을 이용한 고장 탈락 방법)

  • Lee, Joo-Hwan;Lim, Yo-Seop;Kim, Hong-Sik;Kang, Sung-Ho
    • Journal of the Institute of Electronics Engineers of Korea SD
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    • v.46 no.3
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    • pp.32-40
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    • 2009
  • In order to reduce time-to-market, the demand for fast fault diagnosis has been increased. In this paper, a fault dropping technique with fault candidate ordering and test pattern ordering for fast fault diagnosis is proposed. Experimental results using the full-scanned ISCAS 89 benchmark circuits show the efficiency of the fault dropping technique with fault candidate ordering and test pattern ordering.

Low Computational Algorithm of Soft-Decision Extended BCH Decoding Algorithm for Next Generation DVB-RCS Systems (차세대 DVB-RCS 시스템을 위한 저 계산량 연판정 e-BCH 복호 알고리즘)

  • Park, Tae-Doo;Kim, Min-Hyuk;Lim, Byeong-Su;Jung, Ji-Won
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.22 no.7
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    • pp.705-710
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    • 2011
  • In this paper, we proposed the low computational complexity soft-decision e-BCH decoding algorithm based on the Chase algorithm. In order to make the test patterns, it is necessary to re-order the least reliable received symbols. In the process of ordering and finding optimal decoding symbols, high computational complexity is required. Therefore, this paper proposes the method of low computational complexity algorithm for soft-decision e-BCH decoding process.

Self-Testing for FFT processor with systolic array architecture (시스토릭 어레이 구조를 갖는 FFT 프로세서에 대한 Self-Testing)

  • Lee, J.K.;Kang, B.H.;Choi, B.I.;Shin, K.U.;Lee, M.K.
    • Proceedings of the KIEE Conference
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    • 1987.07b
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    • pp.1503-1506
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    • 1987
  • This paper proposes the self test method for 16 point FFT processor with systolic array architecture. To test efficiently and solve the increased hardware problems due to built-in self test, we change the normal registers into Linear Feedback Shift Registers(LFSR). LFSR can be served as a test pattern generator or a signature analyzer during self test operation, while LFSR a ordering register or a accumulator during normal operation. From the results of logic simulation for 16 point FFT processor by YSLOG, the total time is estimated in about. 21.4 [us].

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An Efficient Non-Scan DFT Scheme for Controller Circuits (제어 회로를 위한 효율적인 비주사 DFT 기법)

  • Shim, Jae-Hun;Kim, Moon-Joon;Park, Jae-Heung;Yang, Sun-Woong;Chang, Hoon
    • Journal of the Institute of Electronics Engineers of Korea SD
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    • v.40 no.11
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    • pp.54-61
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    • 2003
  • In this paper, an efficient non-scan design-for-testability (DFT) method for controller circuits is proposed. The proposed method always guarantees a short test pattern generation time and complete fault efficiency. It has a lower area overhead than full-scan and other non-scan DFT methods and enables to apply test patterns at-speed. The proposed method also shortens the test application time through a test pattern re-ordering procedure. The efficiency of the proposed method is demonstrated using well known MCNC'91 FSM benchmark circuits.

A Study on Sizing System and Preferable Ease in a Men's Dress Shirt for Virtual Mass Customization System (가상공간의 대량맞춤 생산을 위한 남성 드레스셔츠 치수체계와 선호 여유량에 관한 연구)

  • Jang, Sung-Eun
    • Journal of the Korean Society of Clothing and Textiles
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    • v.32 no.1
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    • pp.99-109
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    • 2008
  • The purpose of this study was to survey sizing system and preferable ease and to decide the body measuring items for pattern making in a men's dress shirt for mass customization industry that is rising to the surface as a new production system. For this, it had a survey subjects were 254 males between 25 to 44 years old who wear dress shirt frequently and the relevant on line companies, and analyzed the garment sizing system and preferable ease. Collected data were analysed by frequency analysis, t-test, $X^2-test$, and ANOVA using SPSS 12.0 for window. Garment pattern making should reflect the sizes of the body parts well, and simplification of the ordering process would work as an important variable. In relation to the preferable ease, older people preferred more ease while younger people preferred fit ease. In relation to the sizes, people wearing the size of '110' preferred more ease than the size of '90'. And people weighing over 90kg preferred sufficient ease than less weighing. People height over 170cm people preferred sufficient ease for the length between shoulders than height under 170cm. In case of the companies had no consistent sizing system. Significant difference was found in the sizes, except for the size of '100', among those companies, there was significant difference in the length between shoulders and the length of the shirt among those companies and those sizes. Significant body parts for a garment pattern making was height, the circumference of the neck, the chest circumference, the length between biacromion, the arms length, and the waist circumference.

A Study on the Dysmenorrhea in College Female Students (일 대학 간호과 여학생의 월경곤란증)

  • Kim, Young-Hee;Lee, Inn-Sook
    • Women's Health Nursing
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    • v.8 no.1
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    • pp.85-95
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    • 2002
  • This study was undertaken to obtain the incidence of dysmenorrhea and differance of dysmenorrhea according to the general characteristics, lifestyle, and menstrual pattern in women community college students. For the data collection, self-administered questionnaire survey was made from April 7, 1999 to April 14, 1999 among the 204 women community college students. The resultant data were processed by SAS program for frequency, proportion, and Chi-square test. The results of this study are as follows ; 1) Prevalence rate of dysmenorrhea was 81.9%. Among women who had dysmenorrhea, 42.6% of them had family history on dysmenorrhea, 47% of them experienced the dysmenorrhea 'monthly', 89.2% of them had experienced dysmenorrhea on the first-second day, 38.5% of them responded that the most painful region was 'low abdomen', 61.5% of them responded that they used 'analgesics' to soothe dysmenorrhea, 92.3% of them responded that they had analgesics without doctor's prescription, and 42.6% of them responded that they experienced digestive system related symptoms during menstrual period. 2) The incidence of dysmenorrhea was significantly different by ordering of sisters, blood type, and body shape. 3) The incidence of dysmenorrhea was no significantly different by life style. 4) The incidence of dysmenorrhea was no significantly different by menstrual pattern.

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A Test on the Pecking Order Theory of Financing : Considering Chaebol Affiliation

  • Lee, Jang-Woo;Hurr, Hee-Young
    • The Korean Journal of Financial Management
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    • v.26 no.2
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    • pp.63-91
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    • 2009
  • This paper tests the validity of pecking order theory by Myers(1977) and Myers and Majluf(1984) on Korean manufacturing firms listed in the KRX for the years of 1994 to 2003. We also want to see if there is any difference in financing behavior between chaebol affiliated firms and non-chaebol affiliated firms. We develop testable hypotheses from the idea that established relationship between bank and firm mitigates the problem of information asymmetry (Kang and Lim, 2001), and thus makes it easier for firms to raise funds through banks. The test result of the first stage shows that firms prefer cash reserves to debt financing, and prefer debt to equity. Chaebol affiliated firms are found to behave as if they already exploit internal capital markets. The second stage of the test carried out by dividing debt capital into bank loans and corporate bonds also shows a consistent pattern of financing behavior. Firms are testified to prefer cash to bank loans, bank loans to corporate bonds, and corporate bonds to equity. In this case chaebol affiliation seems to make firms behave as if they already establish internal capital markets. Further analysis shows that some, though not in every case, difference of ordering around the occasion of Korean financial crisis exists. It may be from the change of attitude of Korean firms to risk, or from weakened influence of internal capital market along with strengthened market power in the post-crisis period.

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