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Design of A Biased Random Vector Generator for A Functional Verification of Microprocessor (마이크로프로세서 기능 검증을 위한 바이어스 랜덤 벡터 생성기 설계)

  • 권오현;양훈모;이문기
    • Proceedings of the IEEK Conference
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    • pp.121-124
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    • 2002
  • In this paper, we propose a bias random vector generator which can verify functions of microprocessor effectively. This generator is a pre-processor of assembly program, and defines pre-processor instructions which create random vector only in the part which the designer wants to verify. Therefore, this generator shows higher detection ration than any other generators. And, we can cut down design costs because of shortening a period for verifying function.

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Design of A Biased Random Vector Generator for A Functional Verification of Microprocessor (마이크로프로세서 기능 검증을 위한 바이어스 랜덤 벡터 생성기 설계)

  • 권오현;양훈모;이문기
    • Proceedings of the IEEK Conference
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    • pp.273-276
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    • 2002
  • In this paper, we propose a bias random vector generator which can verify functions of microprocessor effectively. This generator is a pre-processor of assembly program, and defines pre-processor instructions which create random vector only in the pall which the designer wants to verify. Therefore, this generator shows higher detection ration than any other generators. And, we can cut down design costs because of shortening a Period for verifying function.

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Calculation of Illuminance Using Fuzzy Reasoning and Zonal Cavity Method (퍼지 추론과 구역 공간법을 이용한 조도 계산법)

  • 최홍규;강태은;원진희;조용상
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • pp.240-246
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    • 1999
  • This parer proposes fuzzy reasoning algorithm for improvement in Zonal Cavity Method that is difficult to calculate average illumination without lighting scope and reflection factor so on. This parer use fuzzy reasoning algorithm for maintainment of the best illumination in spite of some variation those are influenced of room illumination and cut down the difficult to be calculated used Zonal Cavity Method.

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A Study to Reduce the Waiting Time in the Toll Gate (고속도로 매표방법 개선에 관한 연구)

  • 조면식
    • Journal of the Korea Society for Simulation
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    • v.3 no.1
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    • pp.99-105
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    • 1994
  • Most of the companies are forced to cut down the manufacturing cost to survive in the competitive environment. Among others, material distribution cost alone takes substantial portion of the total manufacturing cost. In this study, we investigate the waiting phenomenon in the toll gate and propose a new toll booth layout to reduce the waiting time, thereby reduce the total material distribution cost. SIMAN, a simulation language, is employed to evaluate the proposed layout. The experimental results show that the layout reduces the waiting time significantly. Furthermore, the result indicates that determination of the intermediate buffer space affects the performance of the proposed layout.

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COMPARISON OF COMPUTER PROGRAMS WHICH USED IN STATISTICS TEACHING

  • Oh, Hyeyoung
    • Korean Journal of Mathematics
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    • v.19 no.4
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    • pp.453-464
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    • 2011
  • We used SAS program in statistics class as a plan to increase effect of class. Because lease cost of SAS program is high and low-level students felt difficulty of the syntax of SAS program, I planned to introduce other instruction-software. We observe whether it's O.K. to use Excel instead of SAS program and Excel is helpful in having positive attitudes. We try to compare and analyze the merits of two programs. The purpose of this study is to apply Excel to statistics class, cut down the cost of instruction-software, and make students understand statistics more conveniently and easily.

Study for Catenary System in High Speed Railway Long Tunnel applied UIC Standard (UIC 규격을 적용한 고속철도 장대터널구간의 전차선로 검토)

  • Ahn, Young-Hoon;Song, Jin-Ho
    • Proceedings of the KSR Conference
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    • pp.1924-1929
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    • 2010
  • In long tunnel If we reduce the length of system height on catenary system, tunnel construction cost is cut down. It is because of tunnel section curtailment. So that we have review reduction of system height according to tunnel section. We have designed reduction of system height considered characteristics of overhead contact systems within UIC 799 code.

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Improvement of Slit Photolithography Process Reliability for Four-Mask Fabrication process in TFT LCDs

  • Min, Tae-Yup;Qiu, Haijun;Wang, Zhangtao;Gao, Wenbao;Choi, Sang-Un;Lee, Sung-Kyu
    • 한국정보디스플레이학회:학술대회논문집
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    • pp.851-854
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    • 2008
  • In order to reduce the manufacturing cost of TFT LCDs and cut down an amount facilities invested, there are many LCD panel makers contributes to convert the current Five-mask manufacturing process into the noble Four-mask fabrication process. We optimized the slit mask to improve the poor process reliability.

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Studies on the Harvest of Mulberry Shoots with Branch by Thin Out (뽕나무의 가지뽕 간벌수확 방법에 관한 연구)

  • 김문협
    • Journal of Sericultural and Entomological Science
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    • v.17 no.1
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    • pp.27-29
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    • 1975
  • The experiment was carried out to establish a reasonable harvesting method of mulberry shoots with branches by thin out in spring, comparing with thin-out harvest, and the results are as follows. 1. In spring, the thin-out harvest showed no remarkable effect in the results of seven days interval cutting down, except for the treatment of thinning-out thinner branches. 2. There was no significance between the control and the thinning-out thinner branches, but a tendency to increase a little harvest. Therefore, few shoots of thin branches should be cut down for the 4th instarlarvae and the rest of branches for the 5th instarlarvae. 3. The thin-out of the thicker branches showed the worst result of others, because it can hardly expect for 7 days after cutting down the thicker branches.

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Smoking Situation of Workers in the Field of Railroad Electricity and Vehicles, and Changes of their Smoking Behaviors due to Raise of Price of Tobacco (철도 전기 및 차량 분야 종사자들의 흡연실태 및 담배가격 인상에 따른 흡연행태 변화)

  • Lee, Hyun-Ju;Choi, Eun-Mi
    • The Journal of Korean Society for School & Community Health Education
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    • v.17 no.2
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    • pp.31-44
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    • 2016
  • Objectives: This study was aimed at finding out the current smoking situation of workers in the field of railroad electricity and vehicles and changes of their smoking behaviors after the raise of price of tobacco in 2015. Methods: With a self-administered questionnaire conducted from February 9 to March 6 2015, one-way ANOVA and crosstabs(PASW Statistics Ver. 18.0) were conducted on the data of 626 people. Results: As the result, the smoking rate was 39.1% and 90.5% of the smoking experienced group showed some changes including cutting down on smoking due to raise of price of tobacco. Factors related to smoking included stress, the number of times of drinking, awareness of harmfulness of smoking, the number of days with hard exercise per week and the marital status. Conclusion: Therefore, it is assumed that there is necessity of top-down intervention using these factors to cut down the smoking rate.

Analysis of the characteristics of polymer multi-layers by using quartz crystals (수정진동자를 이용한 고분자 누적막의 특성분석)

  • Kim, Ki-Young;Kim, Jong-Min;Kwon, Young-Soo;Lee, Burm-Jong;Chang, Yong-Keun;Kim, Jong-Deuk;Chang, Sang-Mok
    • Journal of Sensor Science and Technology
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    • v.3 no.2
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    • pp.3-10
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    • 1994
  • The use of preformed polymers and their cross-linking has been attempted in order to improve the intrinsic fragility of monolayers and Langmuir-Blodgett(LB) films. The evaluation of the characteristics of the LB multi-layer by using an AT-cut quartz crystal has been also attempted. This study reveals that the polyether pendants of 2C18VE3 lie at the air-water interface at low surface pressures and are forced down into the subphase when the monolayers are compressed. This characteristic behavoir of the pendant polyethers is very clear on aqueous poly allyl amine(PAA) and is also observeable on saturated aqueous NaCl and $CaCl_{2}$. And the characteristics of LB multi-layers could be evaluated by using AT-cut quartz crystal in situ.

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