• Phonetics and Speech Sciences
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• v.5 no.3
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• pp.47-54
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• 2013

The purpose of this study is to analyse prosodic characteristics of accentual phrases (AP, hereafter) produced by Chinese learners of Korean in Korean text reading. The study is restricted only to the initial APs. Subjects are students who have been studying Korean at a beginner level. The results showed that Chinese learners of Korean tended to make errors in the realization of the tonal patterns of the initial 2 syllables of the initial APs. Also they showed different F0 slopes across the initial and second syllables in the initial APs. Chinese learners of Korean, therefore, need to focus on the prosodic characteristics of the initial 2 syllables of Korean APs to realize fluent Korean intonation.

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2009.05a
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• pp.110-110
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• 2009

최근 차세대 비휘발성 메모리(NVM) 기술은 메모리의 성능과 기존의 한계점을 효과적으로 극복하며 활발한 연구를 통해 비약적으로 발전하고 있으며 특히, phase-change random access memory (PRAM)은 ferroelectric random access memory (FeRAM)과 magneto-resistive random access memory (MRAM)과 같은 다른 NVM 소자와 비교하여 기존의 DRAM과 구조적으로 비슷하고 상용화가 빠르게 진행될 수 있을 것으로 예상되는 바, PRAM에 사용되는 상변화 물질의 식각을 수행하고 X-ray photoelectron spectroscopy (XPS)를 통해 표면의 열화현상을 관찰하였다.

• Phonetics and Speech Sciences
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• v.4 no.2
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• pp.51-59
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• 2012

The purpose of this study is to examine the pitch pattern of Korean accentual phrases produced by Chinese Korean-learners in the reading of a Korean text. Korean accentual phrase is determined by a specific F0 contour. And the pitch contour of APs differ depending on their length and the nature of initial segment. In order to examine if Chinese speakers are also aware such a phonetic properties, we have examined the AP pitch contours produced by 15 Chinese speakers differing in proficiency, and compared them to pitch contours produced by six Korean native speakers. The results show that Chinese speakers' pitch errors were observed in initial segment-tone interaction and in type of pitch patterns. However, even though Chines speakers produced the same type of pitch patterns, internal tonal modulation differs from native speakers. Finally, on the basis of theses results, we proposed a teaching method that visualizes the F0 contour.

• Proceedings of the KIEE Conference
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• 2003.07d
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• pp.2798-2800
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• 2003

Active contour models(called Snakes) are methods for the image segmentation. Many researchers have developed snake algorithms and then published such as GVF, GGF snake. In this paper, we present a pre-process for GGF snake algorithm. This process removes noise so that snakes can flow smoothly. In experiment, we compared a image removed noise with a image corrupted by noise. In result, the pre-process produced a good image for GGF Snake and is necessary.

• Journal of Sericultural and Entomological Science
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• v.36 no.1
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• pp.8-25
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• 1994

The study was conducted to obtain the genetic information on heterosis and combining ability of the quantitative characters for F1 hybrid breeding in silkworms. Six parental varieties and each set of 30 diallel crosses in F1's were used as materials, and bred on the randomized complete block design with three replications. Fourteen characters were observed with the twenty samples in each tray. The data were analyzed for (1) heterosis and combining ability in F1 hybrid. The heterosis in the weight and the length of cocoon showed positively high at 24.51%, and 23.4%, respectively and the weight of the whole cocoon as well as the weight of the whole cocoon layer showed a siginificant heterosis ranging from 15.56% to 15.71% and from 17.14% to 19.01%, but the fifth and the total instar period showed negative heterosis. It was found that the combination between, C70XRomogua and N9 X Romogua showed highly a negative heterosis on the fifth instar period and for the cocoon weight. The female of N9+Sansuian and the male of Romogua X Sansurian have a high heterosis effect, on the cocoon shell weight, and Sansurian X Romogua(reciprocal) on the length and the weight of cocoon filament with no regard to sexuality. The significant maternal and cytoplasmic effect on heterosis of the cocoon weight and the cocoon shell weight were observed with the combinations, N9 X C5, N63 X C70 and on the length of the cocoon filament with the combinations, Sansurian X N63, Sansurian X C5, Sansurian X C70 and N9 X C70, N63 X C70 on the weight of cocoon filament. As mean squared of GCA, SCA and RCA were significant with these combining ability for all characters resulted from additive and non-additive altogether and there is a significant difference between reciprocals. Sansurian showed a negative GCA effect on the fifth and total larval duration, but the higher positive GCA effects took places with varieties N9 and C5 on the length, width, weight of cocoon, cocoon shell weight, percentage of cocoon shell weight, length and weight of cocoon filament, percentage of raw-silk with no regard to both generations and silkworm sexuality. The values of SCA between the cross combinations varied generation-wise and sex-wise. It was shown that SCA value for the fifth instar period was highly negative for Sansurian X C70, Romogua X C70, Sansurian X C5, Romogua X C5, but it was positive effect on the cocoon weight, cocoon shell weight with N9 X C5, and C70 X Sansurian, on the length of cocoon filament with N9 X C5, Romogua X Sansurian on the weight of cocoon filament between Romogua and N63 and on the percentage of raw-silk between the combination of Sansurian X Romoga.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2003.11a
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• pp.131-132
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• 2003

사람의 음성이 나오기까지 화자가 전달하고자 하는 생각이 언어학적 구조로 바뀌고 이 과정에서 생각을 나타내는 적절한 단어나 구가 선택된다. 또 특정언어의 문법규칙에 의해 어순을 배열하고, 전체 의미에서 중요한 면을 강조하기 위해 피치ⅰ), 억양이나 강세와 같은 특성들을 첨가하는 등의 처리 절차를 통하게 된다. 음성은 기본적으로 여기ⅱ) 성분과 성도ⅲ) 성분으로 구분할 수 있다. 성도는 인두강과 구강을 합쳐서 일컫는다. 따라서 입 모양을 어떻게 하느냐에 따라서도 같은 말이라도 명료성에 영향을 미치게 되고 이러한 특성은 자신감이 넘치고 외향적인 모습으로 비춰지게 된다. 본 논문에서는 입의 모양에 따른 음성의 특징과 발성습관을 통해서 나타나는 사람의 성격을 알아보았다.

• Journal of Korean Tunnelling and Underground Space Association
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• v.16 no.6
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• pp.507-520
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• 2014

In this study, the surface displacement was investigated according to the various depth of cover when the tunnel excavation equipment was used in a clay soil. For this the laboratory scaled model test was carried out using the soil sample similar to the in-situ conditions. We carried out four tests according to tunnel depth(1.5D, 2.0D, 2.5D, 3.0D). The distribution of impact due to tunnelling was quantitatively analyzed in the three-dimension by measuring the surface displacement. In addition, the pattern of surface displacements was figured out.

• Journal of Korean Tunnelling and Underground Space Association
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• v.6 no.2
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• pp.141-149
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• 2004

In this study, smoke movement in tunnel fire with natural and longitudinal ventilation systems has been investigated. Reduced-scale experiments were carried out under the Froude scaling using 14.55kW fire source with a wick and experimental data is obtained with 1/18 model tunnel test. Temperature profiles were measured under the ceiling and vertical direction along the center of the tunnel and poisonous gas was measured at emergency exit point. The results show that refuge time for 225m intervals of emergency exit in case of natural ventilation systems is 256 seconds and critical velocity for sufficient back-layer prevention is 2.8m/s for fire strength of 20MW.

• Proceedings of the KIEE Conference
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• 2003.07d
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• pp.2792-2794
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• 2003

In this paper, we measure the tympanic temperature and axillary temperature after far-infrared radiation. The subjects consist of 20 peoples($20s{\sim}60s$) regardless of age or sex. First of all, the subjects lied in mat without the hyperthermia induced by FIR(Far-infrared radiation) for 5 minutes(relaxation) and then lied in mat with the hyperthermia induced by FIR($40{\sim}65^{\circ}C$) for 30 minutes. At this all process, the tympanic temperature and axillary temperature were measured at every 5 minutes. Before FIR was radiating on the human body, the tympanic temperature were $1.05^{\circ}C$ higher than axillary temperature. But after FIR, axillary temperature were $0.217^{\circ}C$ higher than tympanic temperature and the difference of two parameters was decreased.

• Proceedings of the KIEE Conference
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• 2003.07d
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• pp.2807-2808
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• 2003

말초 신경계에서 손상된 신경은 그 손상된 정도에 따라 재생의 정도가 달라진다. 이러한 신경 재생의 정도를 확인할 수 있는 방법으로 초미세 전극 어레이 기술이 연구되고 있는데 이것은 전기신호경로(via hole)를 초미세 전극어레이를 제작하여, 손상된 신경의 근위부(proximal stump)와 원위부(distal stump) 사이에 직접 삽입하여 선경으로부터 재생되어온 신경 섬유의 전기적 전도 선호를 측정 및 기록하는 것이다. 이는 신경 재생을 관찰하는 방법으로서 신경보철(neural prostheses) 기술에 이용된다. 따라서, 본 논문에서는 손상된 신경의 재생을 관찰하기 위한 implantable microelectrode array system을 설계하고, 원 신호인 선경 전도 신호의 특성과 제작된 이식형 초미세전극(implantable microelectrode)의 특성을 고찰하며, 동물 실험을 통하여 그 성능을 검증하였다.