• 음성과학
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• 제6권
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• pp.7-24
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• 1999

Eleven Korean learners of English took part in an experiment where the production and perception of English /r/ and /l/ in four different word positions was investigated. Overall the subjects made more errors on /l/ in both production and identification tests. The frequency of the subjects' errors was also sensitive to word positions in which the two English liquids occur. Especially the subjects made noticeably fewer errors in intervocalic medial position. It is suggested that the Korean subjects' acquisitional pattern in this particular case of foreign phone learning can be explained more by language particular 'interference' effects rather than 'universal' acoustic arguments such as those given in Dissosway et a1. (1982) and Sheldon and Strange (1982). The results of the experiment also support the minority position among second language educators that in some cases of non-native phone acquisition, learners' production abilities can be developed earlier than their perceptual abilities.

• 대한한방내과학회지
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• 제39권5호
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• pp.1068-1074
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• 2018

Objectives: Acute bronchitis is a common inflammatory disease with symptoms related to temporary inflammation of the airways. It is caused by a viral infections in over 95% of cases. A small minority of cases are caused by bacteria; however, there is little evidence that antibiotics are effective in the treatment of the condition. This report is a case of administering Dojukgangki-tang to three patients with acute bronchitis. Methods: Patients diagnosed with acute bronchitis were treated with Dojukgangki-tang, and the effects were studied using the bronchitis severity scale (BSS) and acute bronchitis severity scale (ABBS). Results: After treatment with Dojukgangki-tang for 2 weeks, average BSS score changed from $11.33{\pm}2.08$ to $1.67{\pm}1.15$. Average ABSS score decreased from $9.00{\pm}3.00$ to $2.00{\pm}1.00$. Conclusions: This study suggests that Dojukgangki-tang is effective in relieving coughs and sputum related to acute bronchitis.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2009년도 추계학술대회 논문집
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• pp.256-256
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• 2009

This paper presents a proper condition to achieve above 17 % conversion efficiency using PC1D simulator. Crystalline silicon wafer with thickness of $240{\mu}m$ was used as a starting material. Various efficiency influencing parameters such as rear surface recombination velocity and minority carrier diffusion length in the base region, front surface recombination velocity, junction depth and doping concentration in the Emitter layer. Among the investigated variables, we learn that 2nd doping concentration as a key factor to achieve conversion efficiency higher than 17 %.

• 한국세라믹학회지
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• 제29권4호
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• pp.273-282
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• 1992

The effects of intrinsic and extrinsic gettering on the formation of microdefects in the wafer and on the electrical performance at near-surfaces of three different oxygen-bearing Czochralski silicon single crystal wafers were investigated by varying the combinations of the pre-heat treatments and the phosphorus diffusion through the back-surface of the wafers. The wafers which had less than 10.9 ppma of oxygen formed no gettering zones irrespective of any pre-heat treatments, while the wafers which had more than 14.1 ppma of oxygen and were treated by Low+High pre-heat treatments generated the gettering zone comprising oxygen precipitates, staking faults, and dislocation loops. The effects of extrinsic gettering by phosphorus diffusion were evident in all samples such that the minority carrier lifetimes were increased and junction leakage currents were decreased. However, the total gettering effects among the different pre-heat treatments did not necessarily correspond to the gettering structure revealed by synchrotron radiation section topograph.

• 보존과학연구
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• 통권31호
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• pp.141-154
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• 2010

Many bronze artifacts have been excavated and preserved through conservation treatments in Korea but the analysis on artifacts was regarded as destruction of artifacts from the academic world of archaeology, Therefore, it is not so available to perform research on production techniques and provenances by with qualified analysis. Accordingly, there were only a few study cases about quality properties and production techniques But recently gradual change started to appear from the awareness of the need for the scientific approach to excavated artifacts. While Korean ancestors already had applied the different alloying ratios according to the use and shape of bronze artifacts, the analysis and study have been restrictedly performed. As a result, there was only a few analysis cases on a small minority of artifacts because they are the ancient relics, which made it hard to understand the bronze artifacts more deeply. This study researched into components rate, production techniques and hardness of bronze weapons such as a bronze sword and compared their alloying ratios with those of Chinese old records (周禮考工記, 金之六齊).

• Journal of Korean Neurosurgical Society
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• 제57권2호
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• pp.119-122
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• 2015

Objective : To investigate the efficacy of endoscopic third ventriculostomy (ETV) for infantile hydrocephalus. Methods : Retrospectively reviewed the 17 infantile hydrocephalus cases who were treated with ETV between July 2009 and June 2013. The study includes 17 patients (4 Han and 13 Hui) between the ages of 51 and 337 days. Five cases with encephalitis history and 2 cases with cerebral hemorrhage, with the remaining 10 cases congenital hydrocephalus. ETVs were performed for all patients with 1 case failing because the severe ventricle inflammatory adhesion, excessive exudation, and vague basilar artery. Results : Among the 16 successful cases 7 cases improved remarkably : heads and ventricles reduced and cerebral cortexes thickening morphologically. The ventricles of the remaining cases were unchanged. Conclusion : The ethnic minority account for the majority of the patients in this study. ETV is effective for infantile obstructive hydrocephalus.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2015년도 춘계학술대회
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• pp.335-337
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• 2015

사고 준사고 선박의 경우 하인리히 법칙에 의거 사고 전 잠재적 요인을 내재하고 있는 선박이 그 예후를 미리 보이는 경우가 많다. 이러한 잠재적 요인의 집계 및 통계를 통해 사고 유발 가능선박을 분리하고, 이 선박들에 한해서는 기존의 사고 후 대책 마련 방식에서 벗어나 대형 사고를 예방하기 위한 방식으로 접근하는 것이 철저하게 필요하다고 본다. 그리하여 동해 VTS 관제 구역 내 사고 유발 가능 선박에 나타났던 잠재적 요인의 예시들과, 기존 접근 방법의 한계점에 대해 논하고, 분리된 선박에 대해 어떠한 식으로 관리할 것인지 논해보고자 한다.

• 한국인쇄학회지
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• 제27권1호
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• pp.73-87
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• 2009

The purpose of this study is to provide a executive guideline of humor in Print advertising by analyzing the copy style. For this aim, in-depth analysis about the copy style of humor in Print advertising collected by the web-site of TV cf from 2005 to 2008 was performed. In conclusion, findings showed that the copy style in the pattern of expression was focused on the psychological arousal and incongruity and the pattern of damaging and attacking someone's prestige was considered to be significant in some degree. It was also found that the copy style of humor in Print advertising in the method of expression was focused on the factor of pun, jokes, double-meaning but the factor of satire, irony and turns of phrase was a minority.

• 한국전기전자재료학회논문지
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• 제21권1호
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• pp.23-28
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• 2008

In this paper, transient characteristics of the Punch Through Insulated Gate Bipolar Transistor (PT-IGBT) have been studied. On the contrary to Non-Punch Through Insulated Gate Bipolar Transistor(NPT-IGBT), it has a buffer layer and reduces switching power loss. It has a simple drive circuit controlled by the gate voltage of the MOSFET and low on-state resistance of the bipolar junction transistor. The transient characteristics of the PT-IGBT have been analyzed analytically. Excess minority carrier and charge distribution in active base region, the rate of anode voltage with time are expressed analytically by adding the influence of buffer layer. The experimental data is obtained from manufacturer. The theoretical predictions of the analysis have been compared with the experimental data obtained from the measurement of a device(600 V, 15 A) and show good agreement.

• 한국가정과학회지
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• 제9권1호
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• pp.63-70
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• 2006

This study is a review of the clothing behavior of kidult group that is a new minority group in 21st century. Kidult is the compound word of kid and adult and refers the persons who have become adults but with the inclination to focus on childlike culture and consumption. As the background of the appearance of the kidult group these days, the prevalence of throwback fashions, high valuation of appearance, the phenomenon to prefer light things caused by economic depression, the individualism that does not care about others and the ageless phenomenon that the consumptions are mind age oriented, may be pointed out. The most prominent cloth behavioral characters of the kidult group are that they enjoy bounding color combinations such as candy color and. that cute t-shirts, crop pants and volume skirts of girlish look are easily found. Also, they enjoy toy-like ornaments and illustrated clothes or accessories and the school uniform fashion implying nostalgia for girl-hood and lovely make-up indicate the kidult inclination.