• Journal of the Korean Society of Tobacco Science
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• v.4 no.2
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• pp.37-39
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• 1982

This experiment was conducted to obtained basical source for gathering seeds in flue- cured (NC 2326), and to investigate some characters on the relation to gathering number of capsules per a plant; amount of gathering seeds, weight per 1000 seeds and germination rate, respectively. As a results; correlation coefficient of number of capsules and amount of gathering seeds was pros(live correlation (r =0.9771**) , Weight per 1000 seeds (0.16g) was good from 39$\pm$2 capsules and amount of gathering seeds was 4.8g. So it is considered that method of gathering seeds wise proved to be a desirable 39: 2 capsules and amount of gathering seeds was 4- 5 gram.

• Journal of Chest Surgery
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• v.13 no.3
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• pp.250-255
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• 1980

Myxoma is a benign growth constituting nearly 50% of all primary cardiac tumors. It is important because it can be abolished by surgical therapy and is usually fatal if unrecognized and untreated. Recently a wider use of echocardiogram as the screening test of valve lesions can be expected to increase the number of myxomas found preoperatively. We report a case of left atrial myxoma which was diagnosed by echocardiogram before surgery, and was successfully removed with the aid of extracorporeal circulation. The patient was a 24-year old woman who had suffered from mitral valvular symptoms for 2 months before admission. At operation, a tumor, measuring 5.2 x 4.3 x 4.7 cm, was extremely friable, villous gelatinous mass and it was removed from its origin near the closed fossa ovalis, including its stalk and a portion of the septum. The postoperative course was uneventful. The patient is clinically well and without symptoms of heart disease.

• Proceedings of the IEEK Conference
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• 2000.06d
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• pp.54-57
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• 2000

In this paper, we propose a new interpolation method by using the motion between two moving image frames. In the proposed method, the movement is detected by using neighborhood pixels of target pixel in the past frame and the present frame. Then, H-shaped pseudomedian filter (below HPMED) is used for the still part of the image and Delta-shaped interpolation filter (below $\Delta$-shaped) for used in the moving part of the image. We detect the movement by comparing the differences between pixels in 4${\times}$5 window of the past frame and the present frame; the difference has a critical value. We simultaneously accomplish checking PSNR(peak signal noise ratio) and subjective assessment that is placed the focus on edge characteristic for assessment of result in computer simulation. The results show that the proposed adaptive method is better than the conventional methods.

• Proceedings of the IEEK Conference
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• 2003.07c
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• pp.2761-2764
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• 2003

본 논문에서는 개발된 biphasic 자동형 제세동기 시스템의 임상적 효용성을 동물실험을 통하여 검증하였다. 개발된 제세동기 시스템은 기존의 monophasic 제세동기와는 달리 낮은 에너지로 세동을 제거하는 biphasic 형으로, 이미 실험실 환경의 테스트를 통해 시스템의 안정성과 알고리즘의 탁월한 검출 능력이 확인되었다. 시스템의 임상적 안전성 및 효용성을 확인하기 위하여 8마리의 돼지를 사용하여 시스템의 적절한 세동 검출 및 세동제거능력을 실험하였고, 그 후 시스템의 효용성을 향상시키기 위한 연구로 같은 양의 에너지를 다른 전압 레벨에서 방전시켜 이에 따른 제 세동 효율을 조사하고, 또한 세동 신호의 규칙성과 방전시점에 따른 제 세동 효과를 평가하였다.

• Proceedings of the Korean Geotechical Society Conference
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• 2000.03b
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• pp.317-324
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• 2000

In this study, ten drilled shafts were constructed for evaluating the application of NDT(Non-Destructive Testing) techniques. The drilled shafts, 0.4 m in diameter and 7.0 m in length, were constructed at Namyangju site in Namyangju City. One of the shafts was constructed with no defect, and the other shafts were constructed with the defects of soft bottom, necking, bulging, cave-in and/or weak concrete. Then, these techniques were applied to the bridge foundations for studying unknown bridge foundation characteristics.

• Electronics and Telecommunications Trends
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• v.33 no.3
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• pp.78-88
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• 2018

As the unmanned aerial vehicle industry and its related technologies grow each year, the number of abuse cases caused by drones is increasing. In addition to the invasion of privacy caused by indiscriminate photography, terrorism using unmanned aerial vehicles, which have a low detection probability, high location accuracy, and the capability of targeting people or places, as well as carrying chemicals, radiation materials, and small bombs, is becoming a significant problem around the world. Accordingly, many companies are developing anti-drone solutions that consist of various technologies such as radar, EO/IR cameras, and RF jammers to detect and disable unmanned aerial vehicles. This article briefly introduces the recent R&D trends and technical levels of anti-drone technologies.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.42 no.4
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• pp.424-428
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• 1997

This study was carried out to investigate the effects of sowing dates, Apr. 25, May 15, June 5 and June 25, on sex ratio, growth and seed yield of "Chonnam species", local variety of hemp plant. The results were following as. : In sex ratio according to the different seeding dates, the revealating rate of female and male plants were highest on June 25, and Apr. 25, respectively. The length of stem, the number of branches, nodes, and seed yield were increased on May 15, but these charateristics were rapidly reduced on June 25 because of short growing period. Yield of seeds was increased by 24％ on May 15 comparing with 1.30ton /ha on Apr. 25.

• Journal of Sericultural and Entomological Science
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• v.4
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• pp.79-83
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• 1965

The silkworm eggs and silkworm larvae were treated with X-Rays, and then the mutations were induced artificially. The results obtained are as follows: 1. The best range of time was from 1 to 1.5 seconds to induce the mutations. 2. The silkworm-eggs treated with X-rays were almost malformes, unmoulting or radiation sick. 3. Silkworm-eggs laid by the moth-fed on penicillin in 1963 were also treated with x-rays. Many useful ones were found from them. 4. There is the possibility of silkworm improvement by inducing mutations with x-rays. Further studies are therefore needed in this field.

• 한국약용작물학회:학술대회논문집
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• 2011.04a
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• pp.160-161
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• 2011

• Journal of the Korean Institute of Telematics and Electronics B
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• v.31B no.3
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• pp.69-79
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• 1994

DCT image coding has been well known for its compression efficiency. Its nature makes it also suitable for efficient progressive transmission and reconstruction since low frequency transform coefficients contain most of the energy of image signals. In this paper, we propose a progressive transmission technique of DCT image by non-sequential bit ordering using Lloyd-Max quantizer. And then, we will show that the Lloyd-Max quantizer can be embedded quantization. In simulation results, the proposed method show better subjective picture and MSE of the reconstructed image than the conventional zig-zag scanning transmission of transform coefficients.