• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 1996년도 추계학술대회 논문집
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• pp.23-25
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• 1996

In this paper aims at studying the minimal test pattem of the RAM. This also propose a scheme of testing faults from the new fault model using the LLB. The length of test patterns are 6N(1-wsf), 9.5N(2-wsf), 7N(3-wsfl, 3N(4-wsf) operations in N-bit RAM. This test techniques can write into memory cell the number of write operations is reduced and then much testing time is saved. A test set which detects all positive-negative static t-ws faults for t=0, 1, 2, 3, 4 and detects all pattern sensitive fault in memory array. A new fault model, which encompasses the existing fault model Is proposed.

• 전기학회논문지
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• 제64권4호
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• pp.592-597
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• 2015

3D-IC is a novel semiconductor packaging technique stacking dies to improve the performance as well as the overall size. TSV is ideal for 3D-IC because it is convenient for stacking and excellent in electrical characteristics. However, due to high-density and micro-size of TSVs, they should be tested with a non-invasive manner. Thus, we introduce a TSV test method on test prober without a direct contact in this paper. A capacitive coupling effect between a probe tip and TSV is used to discriminate small TSV faults like voids and pin-holes. Through EM simulation, we can verify the size of eye-patterns with various frequencies is good for TSV test tools and non-contact test will be promising.

• 비파괴검사학회지
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• 제20권4호
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• pp.322-328
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• 2000

730MHz의 고정 주파수를 방사하는 3소자 안테나 방식의 GPR을 이용하여 자체 제작한 시험장 속에 매설된 다양한 시험편의 검출능력을 조사하였다. 여러 가지 상황에 대한 검출능력을 알아보기 위하여 매설물의 재질, 크기, 매설 깊이에 차이를 두어 실험을 수행하였다. 레이다파의 전파속도를 조절하여, B-scan상의 쌍곡선 패턴의 위치를 실제 매설한 깊이에 정확하게 위치하게 함으로써, 실험결과로부터 얻은 soil(dry)에서의 레이다파의 전파속도가 기존 data와 유사함을 확인하였다.

• The Journal of Korean Physical Therapy
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• 제16권3호
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• pp.152-160
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• 2004

The purpose of this study was to investigate the effect of elastic band based of PNF pattern on the U/E function in the spinal cord injury patient. 11 subjects with spinal cord injury participated in this study. They took elastic band excercise 5 times per week for 8 weeks. One time excercise spent 35minutes. The therapeutic effect was evaluated by Cybex 6000, BTE Work Simulator, how many seconds they needed to walk 100 meters. 11 cases were examined before, after 8 week, elastic band excercise. The results of this study are as follows; 1. Isokinetic power by Cybex 6000 : The elbow flexion, shoulder flexion and extension were significant difference between test-retest(p<.05). but elbow extension were not significant difference between test-retest. 2. BTE Work Simulator : Wheelchair Propulsion and Steering Torque were significant difference between test-retest(p<.05). 3. Wheelchair Propulsion velocity : There were significant difference between test-retest(p<.05). The findings suggest that SCI patients can improve their Isokinetic power on shoulder and elbow joint, wheelchair propulsion and Steering Torque by BTE Work Simulator, Wheelchair Propulsion velocity through elastic band based of PNF pattern.

• Advances in concrete construction
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• 제7권4호
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• pp.241-247
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• 2019

In this paper the effect of bedding layer on the failure mechanism of rock in direct shear test has been investigated using particle flow code, PFC. For this purpose, firstly calibration of pfc2d was performed using Brazilian tensile strength. Secondly direct shear test consisting bedding layer was simulated numerically. Thickness of layers was 10 mm and rock bridge length was 10 mm, 40 mm and 60 mm. In each rock bridge length, bedding layer angles changes from $0^{\circ}$ to $90^{\circ}$ with increment of $15^{\circ}$. Totally 21 models were simulated and tested. The results show that two types of cracks develop within the model. Shear cracks and tensile cracks. Also failure pattern is affected by bridge length while shear strength is controlled by failure pattern. It's to be noted that bedding layer has not any effect on the failure pattern because the layer interface strength is too high.

• 제어로봇시스템학회논문지
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• 제14권6호
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• pp.523-529
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• 2008

In this paper, we proposed mobile LCD module test device on embedded based, when operating the existing LCD, divide flicker clearly in full frame, and configuration so as to support between other CPU interface, MDDI, SPI, 24Bit RGB interface, etc. that is based on a high-speed CPU. In addition, when demand to test about each pixel of LCD, it is possible to change IP design of H/W, FPGA, but proposed system is application possible without other design changing. Proposed system is made smaller and equipped with battery, so secure with mobility for effective test the LCD/OLED module and it is able to test the pattern by the client program, for example exiting picture, mpeg, simple pattern test and test per pixel, scale, rotation, Odd/Even pixel per video, etc. From now on, if integrating with independent test system and it is configured that is able to mutual communication and test, it is expected to reduce consumption of human resources and improve productivity for LCD module test.

• 대한인간공학회지
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• 제21권3호
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• pp.59-79
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• 2002

The purposes of the study were to present the optimum slacks pattern for elementary school girls and to compare and evaluate wearing ease of the slacks. 3D scans using the Cyberware PS motion platform were carried out for 3 subjects who have different body type. The automatic drafting method was programmed by AutoLISP in CAD. Wearing tests using 3D Scanner was done for evaluation of fitness of slacks. Regression analysis, analysis of variance and post-hoc test were performed for statistical analysis of the data by SPSS program. The procedure and results were as follows: The slacks construction components for pattern drafting were derived from 10 horizontal section maps obtained from 3D scans. The automatic drafting was based on the measurements of slacks construction components and the curve of crotch line. The crotch line was drafted using of the arc function in AutoCAD. The total crotch length was calculated using the multiple regression equation. Wearing test represented that the slacks pattern developed to accomodate individual body measurements was estimated more highly than existing patterns.

• 한국의류학회지
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• 제27권11호
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• pp.1190-1197
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• 2003

The purpose of this study is to compare and analyze methods of women's apparel prototypes and provide for some useful fundamental data to improve the apparel prototype suitable for Korean women. Two different drafting methods, the Bunka pattern of Japan Bunka Women's University and the Secoli pattern of Italy istituto carlo secoli, an italian pattern drafting institute, were selected. The result and discussion are as follows; In the calculation formula, the Bunka was shown more comfort at arm-hole part, because of it's lower arm-hole depth, wider arm-hole width and lower cap height in comparison with the Secoli. At the shoulder angle, the Bunka is inclined more in front shoulder than the back shoulder, whereas the Secoli is inclined more in back shoulder than the front shoulder. It could explain that the Bunka is suitable for bendforward type and the Secoli is suitable for lean-back type. In the sensory test, the one-piece pattern of the Secoli with 4cm ease was highly estimated in ease. It seems young women's preference to body conscious clothes which reflected in many new elastic fabrics. At the bust point to neck, the Bunka was highly estimated, compared with the Secoli. It seems like to be caused that for the bust point to neck formula, the Bunka used bust girth, the Secoli used stature which has low correlation with the bust point to neck.

• Korean Journal of Acupuncture
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• 제21권2호
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• pp.81-93
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• 2004

Objective : To examine the effects of self-acupressure which is usually used in reducing clinical nurses sleep pattern disturbances and fatigue. Methods : The research involved a nonequivalent control group with a pre test and post test design. The study subjects studied included 48 clinical nurses who work in C hospital located in Pusan, and they were classified into 2 groups : 25 nurses in the experimental group who took self-acupressure, and 23 nurses in the control group who did not. Self-acupressure of G12, H7 and Sp6 was administered over a period of 3 days with 1 demonstration and 4 frequencies. Results : 1. The sleep pattern disturbance score of the experimental group who took self-acupressure was significantly lower than that of the control group. (t= 7.00, p= .00) 2. The fatigue score of the experimental group who took self-acupressure was significantly lower than that of the control group. (t= 6.78, p= .00) Conclusions : Self-acupressure of G12, H7, Sp6 was effective for relieving clinical nurses sleep pattern disturbances and fatigue. The relevance of this study involved the use of Meridian self-acupressure in nursing intervention and was based on the theoretical foundations of Oriental Medicine.

• Journal of Preventive Medicine and Public Health
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• 제17권1호
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• pp.203-210
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• 1984

Primary screening test for serum HBsAg by RPHA from 4,805 persons who were clinically well through preemployment examination for the period of one calendar year of 1983 revealed 476 (9.9%) positive individual carriers. There were no significant differences in distribution of positives of serum HBsAg by age group, profession, or province area. Among positives of serum HBsAg, 356 (74.8%) showed normal findings and 120 (25.2%) showed abnormal findings in liver function test, respectively. Radioimmunoassay was done in 169 positives of HBsAg and RIA detected 10 negative persons who were positive by RPHA revealing 5.9% of false positive rate and 94.1% of sensitivity of RPHA. In RIA profile of HBV markers, pattern I (HBsAg+, Anti-HBe+) was 46.6%, pattern II (HBsAg+, HBeAg+) was 33.3%, pattern III (HBsAg+only) was 18.3%, pattern IV (HBsAg+, HBeAg+, Anti-HBs+) was 1.3%, pattern V (HBsAg+, HBeAg+, Anti-HBe+) was 0.6%, respectively. There were no positives of HBsAg among 10 persons who were negatives of HBsAg by RIA.