• 한방재활의학과학회지
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• 제23권4호
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• pp.185-194
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• 2013

Objectives The aim of this study was to evaluate the efficacy and safety of micro current taping therapy (MTT) on patients with chronic low back pain (CLBP). Methods We included 50 participants who met the inclusion criteria and 5 participants dropped out during the sessions due to the following reasons: 3 participants were personal reasons, 1 participant was taking medication, 1 participant was fore arm fracture. We attached "I" shaped 40 cm, 2 tapes along the erector muscles of the spine starting from both iliac crest and another "I" shaped 30 cm, 1 tape on the painful site horizontally. This procedure was done 8 times and participants visited a total of 9 times including a final visit for evaluation. We measured visual analog scale (VAS), range of motion (ROM) and schober's test on every visit. Participants completed a questionnaire of oswestry disability index (ODI) and Beck's depression inventory (BDI) on the first and last visits. Results In VAS for pain intensity and bothersomeness, there were significant decreases after 1st, 6th treatments. In range of extension, there was significant increase after 3rd treatment at first. In range of flexion, there was significant increase after 2nd treatment at first. In range of left flexion, there was significant increase after 4th treatment at first. In range of right flexion, there was significant increase after 3rd treatment at first. in schober's test, there was significant increase after 2nd treatment at first. In VAS, ROM, schober's test, BDI, ODI, there were significant improvement after all treatments had done. Conclusions There was a significant effect of MTT on CLBP. And there was no adverse effect.

• 현장농수산연구지
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• 제17권1호
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• pp.101-111
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• 2015

The purpose of this study is to identify any differences in academic records of students after they got into the Korea National College of Agriculture and Fisheries through the entrance exam. The target group was the students of 1,035 who enrolled from the year of 2012 to 2014 by the exams respectively, and this study compared those first year's records. As a result, this study found that their academic achievements have no significant differences statistically. With regard to the result, we could recognize that the average achievements of students are arithmetically high, who were accepted by admission officer's interview(talented students of agriculture and fisheries) and regular admission procedure to which the scholastic test result is applied. Accordingly, it is more desirable that we should rather focus on measures to improve the admission procedure that could contribute to academic achievements of students who are mostly accepted through the nonscheduled admission. It is pointless to focus on discussion that the achievement of students selected by a particular procedure is low. That kind of criticism proved groundless. Secondly, the study of the correlation between their admission records and after admission records of the freshmen in 2012 shows that a significant difference does not exist whereas those of in 2013 and 2014 has a slightly different statistically, though a coefficient of correlation was a mere 0.17. It account for this result that KNCAF has increased the applied-rate of highschool transcript from 33.3% to 50.0.% in admission procedure from the year of 2013. However, lowering the applied-rate of farming and fishing background is not everything as we consider the graduates' easy settling into rural area. It is a well-known fact that after graduation, the majority of students who have applied for a grace period of the delay in performing the obligation of farming and fishing, and of students who have paid the school expenses back came from ones with no sufficient foothold. This means that we should formulate a supporting policy for the students to settle into rural area smoothly after graduation if we keep the regulation of lowing the applied-rate of farming and fishing.

• 대한관절경학회지
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• 제1권1호
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• pp.123-127
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• 1997

Arthroscopic anterior cruciate ligament reconstructions using bone-patella tendon-bone have been considered the best method by which others are compared. The notchyplasty is one of the important steps of this procedure and it is emphasized recently to prevent retear of the reconstructed ACL caused by impingement. However, until now, there is controversy about adequate amount of notchyplasty. Also, it is hard to examine the adequacy of notchyplasty even in the arthroscopic field, The purpose of this paper is to describe the surgical technique of notchyplasty, using the flexible reamer and preliminary result of its operation. In this study the results of ACL reconstruction with notchyplasty which is made by us were analized from January. 1994 to December, 1995. The results were as follows: 1. The notchyplasty with flexible reamer is the method that can be obtained adequate amount of removal, perfectly smooth notchyplasty. 2. The range of motion of the affected knee joint was normal ROM after post operation 6 month. 3. In the last follow up, 2 cases were positive in anterior drawer test 4 cases were positive in Lachmann's test and 1 knee was positive in Pivot shift test 4. Average Lysholm knee scoring scale was 70 points at preoperative and 92 points at the last follow up.

• 조명전기설비학회논문지
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• 제22권12호
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• pp.36-46
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• 2008

본 논문은 대전력시험설비를 이용한 특고압 가스 절연 부하 개폐기의 대전력 시험회로의 구성과 통합형 시험 방법에 관하여 연구하였다. 대전력시험설비는 전기기기의 전기적 및 기계적인 성능을 검증하는 설비로서 단락발전기, 보호차단기, 투입스위치, 임피던스, 고압변압기, 저압변압기, 측정 및 보호시스템 등으로 구성되며, 이 시스템을 이용하여 단시간전류시험, 전류개폐용량시험, 단락투입 및 차단시험 등을 실시한다. 특고압 가스 절연 부하 개폐기의 규격으로는 국내 배전계통에 적용되는 ES(한국전력공사 표준규격) 5925-0002가 있으며, 국제 규격으로는 IEC 60265-1, 62271-1 및 IEEE C 37.74 등이 있다. 본 논문에서는 여러 규격에 각각 규정되어 있는 시험 절차, 시험회로 구성 및 시험 방법 등을 통합하여 600[MVA]급 대전력 시험설비에 적용하였다.

• 대한한의학회지
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• 제32권5호
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• pp.114-125
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• 2011

Objectives: The aim of this study was to evaluate the efficacy of microcurrent taping therapy and kinesio taping therapy. Methods: We included 58 participants who met the inclusion criteria and assigned them into two groups after the randomization. We allocated 29 participants to the microcurrent taping therapy group (MCT) and the other 29 to the general kinesio taping therapy group (GT). 27 participants completed the trial in the MCT group, 27 participants in GT. We attached "I" shaped 20cm tape along the erector muscle of the spine starting from the level of S2, and another 30cm tape on the iliac crest horizontally. These "I" shaped tapes were attached on two parts of the body and were performed the same way for both groups. This procedure was done 8 times and participants visited a total of 9 times including a final visit for evaluation. We measured Visual Analog Scale (VAS), Range of Motion (ROM) and Schober's test on every visit. Participants completed a questionnaire of Oswestry Disability Index (ODI) and Beck's Depression Inventory (BDI) on the first and last visits. Results & Conclusion: There was a significant effect of microcurrent taping therapy on lower back pain, but we could not establish the superior effect of microcurrent taping therapy compared with general kinesio taping therapy.

• Nuclear Engineering and Technology
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• 제32권1호
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• pp.1-9
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• 2000

Delayed hydride cracking (DHC) velocity and threshold stress intensity factor for DHC ($K_{IH}$) tests in the radial direction on M11 pressure tube material in Wolsong unit 1 were carried out following the Atomic Energy Canada Limited (AECL) standard test procedure in order to identify the effect of undercooling on DHCV and to acquire the $K_{IH}$ data. The results showed that $K_{IH}$ 's were 8.8$\pm$0.8 MPa√m in the back offcut and 11.4$\pm$0.7 MPa√m in the front offcut. The fact that $K_{IH}$ in the front offcut is about 20% higher than that in the back offcut is attributed to the microstructural difference between the materials of the front and back ends. $K_{IH}$ 's in M11 pressure tube appeared to be higher than the values from the tubes made of double melted ingot reported earlier. This can be interpreted by the fact that very small amounts of Chlorine (Cl) and Phosphorus (P) are contained in the ingot and that the content of the harmful elements in the M11 pressure tube is equivalent to that made of a quadruple melting process. DHC velocities at 25$0^{\circ}C$ in the front offcut in the radial direction are measured to be 5~8$\times$10$^{-8}$ m/s. The results show that the prior thermal history change the DHC velocity significantly. This effect was confirmed by the experiment of undercooling prior to the DHC tests.DHC tests.

• 한국산학기술학회논문지
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• 제20권2호
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• pp.638-643
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• 2019

자동차 소프트 인스트루먼트 패널의 비용과 중량을 줄이기 위하여 두 가지 사출을 동시에 수행하는 방법을 이용한 새로운 인스투르먼트 패널이 개발되었다. 첫 번째 사출은 뒷면 발포체 포일을 삽입하는 압축 사출을 하는 방법이고, 다른 하나는 동승석 에어백에 도어와 동시에 2샷 사출하는 방법이다. 우리는 그것을 'IMX-IP'라고 부르며, 이것은 인스트루먼트 패널의 모든 부품들이 종류가 다른 수지와 하나의 금형 안에서 만들어지는 방법인 것이다. 본 기술의 개발 과정은 (1) TRIZ 기법을 이용한 새로운 사출 금형 설계, (2) 사출 조건의 최적화와 폼의 손실과 두께 편차를 최소화하기 위한 뒷면 발포체 포일의 최적화, (3) 2샷 사출 압축에 대한 CAE 해석 검증, (4) 신뢰성 검증 시험과 양산에의 적용 순서로 이루어져 있다. 뒷면 발포체 포일 삽입을 이용한 2샷 사출을 통한 공정 감소는 개발비와 중량 절감과 함께 소프트 인스투루먼트 패널의 부드러운 느낌을 향상시키는 것을 가능하게 하였다.

• 대한정형도수물리치료학회지
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• 제5권1호
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• pp.39-51
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• 1999

Background and Purpose. Objective measurements of hamstring muscle length are needed to quantify baseline limitations and to document the effectiveness of therapeutic interventions. Several indirect clinical tests for measuring hamstring muscle length are available, but influence of their test procedure is not well documented. The purpose of this study were 1) to describe hamstring muscle length as reflected by use of six tests(active straight leg raising(ASLR), passive straight leg raising(PSLR), passive straight leg raising with the lower back flat(PSLRB), active knee extension(AKE), passive knee extension(PKE), hip joint angle(HJA). 2) to examine the correlation among the tests. Subjects, Sixty subjects(30 men. 30 women) ranging in age from 18 to 25 years(mean 20.2 years) and with no limitation hamstring flexibility and no neurological and orthopedical problems. Methods. All subjects performed six tests. A inclinometer was used to determine the end point of range of motion. HJA was measured using an inclinometer placed over the sacrum. PSLRB were tested PSLR with the low back flat and the opposite thigh slightly flexed and support on pillows. Results, A mean ASLR value of 85.9 degrees, PSLR value of 99.9 degrees, PSLRB value of 109.8 degrees, AKE value of 77.2 degrees PKE value of 83.1 degrees and HJA value of 73.0 degrees were obtained for all subjects. A dependent t-test showed significant difference between the angles of ASLR and PSLR(p<0.001). There was a significant difference between the angles of PSLR and PSLRB(p<0.001). There was a significant difference between the angles of AKE and PKE(p<0.001). The highest correlation was between PSLR and PSLRB(r=0.915, p<0.001). All SLR tests were significants related(p<0.001), as well as AKE and PKE(p<0.001). The lowest correlation was between PKE and HJA(r=0.171. p>0.05). Conclusion and Discussion. The results indicated that the hip flexion angles for ASLR, PSLR and PSLRB were a difference, and the knee extension angles for AKE and PKE were a difference.

• 정보처리학회논문지A
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• 제16A권4호
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• pp.245-254
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• 2009

임베디드 프로세서 사용이 증가함에 따라 임베디드 프로세서를 위한 컴파일러를 시기 적절히 개발해야 할 필요성이 증가하고 있다. 컴파일러 후단부를 수정하여 새로운 컴파일러를 구성하는 재겨냥 기법이 이에 적합한 기법으로 채택되고 있다. 이 논문에서는 재겨냥성 C 컴파일러를 테스트하기 위한 테스트 집합 생성 시스템을 제안한다. 제안한 시스템은 문법 커버리지 개념을 이용하여 테스트 집합을 생성한다. 일반적으로 원시 프로그래밍 언어의 문법을 이용하여 테스트 집합을 생성하면 방대한 크기의 테스트 집합이 얻어진다. 그러나 신속히 컴파일러를 출시해야하는 상황에서는 방대한 테스트 집합 크기가 문제가 될 수 있다. 이에 이 논문에서 제안한 시스템은 중간 코드를 고려하여 테스트 집합을 축약하는 기능을 탑재하고 있다. 실험 결과에 따르면, 비록 축약된 테스트 집합 크기는 원본 테스트 집합 크기의 평균 10%에 불과하지만 원본 테스트 집합이 검출할 수 있는 컴파일러 오류의 75% 정도를 검출할 수 있음을 알 수 있었다. 이는 본 논문에서 제시한 축약 기법이 임베디드 컴파일러 개발 초기 단계에서 효과적으로 사용될 수 있음을 의미한다.

• 대한치과보철학회지
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• 제45권3호
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• pp.303-309
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• 2007

Statement of problem. The effect of gold electroforming on gold alloy was not studied. Purpose. This in vitro study investigate the effect of gold electroforming on gold-silver-palladium alloy. Material and methods. Three pieces of gold strips had undergone the electroforming procedures on one side and then half of the side again electroformed. The set mode for this study was program 1 ($200{\mu}m$). And the processing time was 15min (1/20 time to form $200{\mu}m$ coping). The confocal laser scanning microscope (PASCAL 5, Carl Zeiss, Bernried, Germany) was used to measure the thickness of the pure gold layer electroformed on the gold strips. Half of the gold strip was coated two times with electroformed gold, and the other half one time. The data from the cone focal laser system was processed to get the vertical profile of the strips and the difference of the vertical height between the double coated and single coated layer was regarded as the thickness of the gold coating. The layer thickness value to built 3D image of the cone-focal laser was set $0.5{\mu}m$. Next to the measurement of the thickness of the coating, the Vicker's hardness test was done. It was performed on the double coated surface, single coated surface and non-coated surface (back side) three times each. Results. The mean thickness value gained from gold electroforming technique was measured to be $22{\mu}m$ for sample 1, $23{\mu}m$ for sample 2, $21{\mu}m$ for sample 3. In the same condition of time, power and the amount of electrolyte, the data showed no difference between samples. According to the results of variance analysis, the differences among the variations in number of coating were statistically insignificant (p>0.05), meaning that the two times of gold electroforming coating did not change the hardness of gold-silver-palladium alloy. Conclusion. The test of thickness of gold coating proved the coherency of the gold electroforming procedure, in other words, when the power, the exposed surface area, processing time and the amount of electrolytes were set same, the same thickness of gold would be coated on. The hardness test showed that the electroformed gold coating did not change the hardness of the gold-silver-palladium alloy when it is coated not more than $45{\mu}m$.