• 대한치과교정학회지
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• 제24권2호
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• pp.247-273
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• 1994

The purpose of this study was to evaluate the dental arch morphology and the occlusal characteristics in the Koreans from the dental-anthropological point of view. The sample consisted of dental stone casts obtained from 120 Korean adults and 142 Japanese adults. Japanese casts and Caucasian data had been preserved at the Dept, of Orthodontics of Tokyo Medical and Dental University. Tooth size and dental arch morphology of the Koreans were compared with that of the Japanese. On the other hand, the variations of 30 crown traits, categorized and quantitatively graded, were compared between two peoples and the frequency distribution of each crown traits were analyzed by means of Chi-square test. The results were summerized as followings ; 1. There was a significant sexual difference in dental arch length and width in the Korean, in which male had a longer and wider dental arch than female. There was a close resemblance for dental arch morphology between the Koreans and the Japanese, except for a little longer mandibular arch of the Japanese. 2. In general, Korean male had wider crown than female, particulary in central incisor,canine,1st molar of maxilla and canine, 1st and 2nd molar of mandible with significance. The Korean had wider maxillary first molar, smaller mandibular first and second molar than the Japanese in both sex. 3. In crown traits of the Korean, shovel-shaped incisor showed lower frequency distribution than in the Japanese, but higher than in the Caucasians. Frequency of incisor reduction was shown higher distribution than in the Japanese and the Caucasians. Carabelli's tubercle showed higher frequency distribution than in Japanese, but remarkably lower than in Caucasians.

• 한국식생활문화학회지
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• 제9권4호
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• pp.355-367
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• 1994

This study aims at exploring the nature of the traditional Korean wines brewed throughout the Southern Region of Korea-Chulla-do, Kyungsang-do and Cheju-do describing their varieties and brewing methods and also comparing the similarities and differences of their features. When compared with the wines produced in the Central Region, the Southern varieties are very fastidious and complex in their brewing methods, which in turn show a wide range of diversity. First of all, all the 29 kinds of wines investigated, not a single one shows any resemblance to any one of the remaining, each exhibiting peculiar and particular characteristic features of its own. Especially, the distilling methods demonstrate very complex processes. Secondly, the majority of the Southern spirits are made from grains, added with fragrant flavor of pine tree, wormwood, chrysanthemum leaves and other medicine herbs such as Chinese matrimony vine and tankui. Thirdly, they are brewed with yeast made from wheat into kodupap(steamed rice) type of spirits, emerging as in the form of blended liquor. Fourthly, in brewing, different fermenting temperature and duration are required. Typewise, the temperature required for the basic spirit is $15{\sim}20^{\circ}C\;or\;25{\sim}30^{\circ}C$ : in the case of blended secondarily fermented liquor, from the minimum of $0{\sim}5^{\circ}C$ to the maximum of $75{\sim}80^{\circ}C$. The brewing duration is $3{\sim}5$ days for the basic spirits. In some cases, from the minimum of 3 days to the maximum of 100 days are consumed for fermenting. Fifthly, the wine extraction gadgets are yongsu (wine strainer), the sieve, filter paper, Korean traditional paper, the utilization of which implies that the brewers endeavor to observe and preserve the traditional and indigenous methods of wine making.

• 한국건축시공학회지
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• 제4권1호
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• pp.119-126
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• 2004

Generally, reinforced concrete is one of the most commonly used structural materials and it prevents corrosion of steel bar by high pH of interior, But, as time elapsed, reinforced concrete structure become deteriorated by many of combined deterioration factors and environmental conditions. And, there are large number of deteriorate mechanism of the reinforced concrete structure and it acts complexly. It is recognized that steel bar corrosion is the main distress behind the present concern regarding concrete durability. In this study, to institute combined deterioration environments, established acceleration condition and cycle for combined deterioration environments has a resemblance to environments which are real structures placed. After that to confirm corrosion properties of reinforced concrete due to permeability with covering depth and types of surface cover under combined deterioration environments, measured carbonation velocity coefficients, chloride ion diffusion coefficients, water absorption coefficients, air permeability coefficients and electric potential, corrosion area ratio, weight reduction, corrosion velocity of steel bar. The results showed that an increase in age also decrease carbonation velocity coefficients, increase Chloride ion diffusion coefficients and increases water absorption coefficients. As well, an increase in age also increases corrosion of steel bar. Data on the development of corrosion velocity of steel bar with types of surface cover made with none, organic B, organic A, inorganic B, and inorganic A is shown. As well, permeability and corrosion velocity of steel bar with covering depth is superior to 10mm than 20mm. And it is confirmed permeability and corrosion properties of steel bar are closely related.

• Journal of the korean society of oceanography
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• 제32권4호
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• pp.163-170
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• 1997

Some CMP gathers acquired from shallow marine seismic reflection survey in offshore Korea do not show the hyperbolic trend of moveout. It originated from so-called swell effect of source and streamer, which are towed under rough sea surface during the data acquisition. The observed time deviations of NMO-corrected traces can be entirely ascribed to the swell effect. To correct these time deviations, a residual statics is introduced using Genetic Algorithms (GA) into the swell correction. A new class of global optimization methods known as GA has recently been developed in the field of Artificial Intelligence and has a resemblance with the genetic evolution of biological systems. The basic idea in using GA as an optimization method is to represent a population of possible solutions or models in a chromosome-type encoding and manipulate these encoded models through simulated reproduction, crossover and mutation. GA parameters used in this paper are as follows: population size Q=40, probability of multiple-point crossover P$_c$=0.6, linear relationship of mutation probability P$_m$ from 0.002 to 0.004, and gray code representation are adopted. The number of the model participating in tournament selection (nt) is 3, and the number of expected copies desired for the best population member in the scaling of fitness is 1.5. With above parameters, an optimization run was iterated for 101 generations. The combination of above parameters are found to be optimal for the convergence of the algorithm. The resulting reflection events in every NMO-corrected CMP gather show good alignment and enhanced quality stack section.

• 원예과학기술지
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• 제18권2호
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• pp.103-106
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• 2000

RAPD 방법을 이용하여 국내자생 자란과 일본자생 자란의 유전적 다형성을 연구하였다. PCR 결과 156개의 재현성을 보이는 band를 얻었으며 그 중 58개가 다형성을 보였고 98개는 단일성을 나타냈다. 유연관계 분석 결과 자란은 세가지의 그룹으로 분류되었다. 첫 번째 그룹은 국내 A(자생일반종), B(목포산 자생 반엽종), C(자생 반엽종) 그리고 일본품종 D와 E(일본자생 일반종)가 속한다. 국내 무늬종 B와 C의 유사도 0.806, 일본품종 D와 E는 0.778로 매우 높게 나타났다. 두 번째 그룹은 일본품종 G(일본자생 왜성종)만이 분류되었다. 그리고 세 번째 그룹은 일본자생 무늬종인 F와 H(일본자생 무늬종)가 포함되었다.

• 한국산학기술학회논문지
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• 제13권8호
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• pp.3366-3370
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• 2012

빅스 바이더벡이라는 코넷 연주자는 일반적으로 백인재즈라는 새로운 길을 개척한 인물로 거론된다. 그러나 이 연구에서는 일반론적인 관점에서 벗어나 1920년대 초 흑인 재즈라는 테두리 안에서의 빅스 바이더벡의 독창성이 20세기 초 영문학에서의 새로운 사조였던 '의식의 흐름'이라는 표현법과 그 유사성이 깊은 것으로 본다. 음악과 문학과의 흐름상의 유사성에서 두 분야가 어떻게 서로 영향을 주고받았는지는 모호하다. 하지만 표현방법 면에서 볼 때 두 다른 예술 분야에서의 유사성은 충분히 흥미로운 것이다. 특히 미국의 한 재즈연주자의 연주가 같은 시대 영국의 문학에서의 새로운 시도와 그 흐름을 같이 한다면, 현재를 사는 음악인들에 의한 다른 분야의 흐름과 음악의 흐름상 연관성에 대한 연구 또한 보다 폭넓게 이루어 져야 할 것이다.

• Wind and Structures
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• 제19권4호
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• pp.421-441
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• 2014

With the assistance of typhoon field data at aerial elevation level observed by meteorological satellites and wind velocity and direction records nearby the ground gathered in Guangzhou Weather Station between 1985 and 2001, some key wind field parameters under typhoon climate in Guangzhou region were calibrated based on Monte-Carlo stochastic algorithm and Meng's typhoon numerical model. By using Peak Over Threshold method (POT) and Generalized Pareto Distribution (GPD), Wind field characteristics during typhoons for various return periods in several typical engineering fields were predicted, showing that some distribution rules in relation to gradient height of atmosphere boundary layer, power-law component of wind profile, gust factor and extreme wind velocity at 1-3s time interval are obviously different from corresponding items in Chinese wind load Codes. In order to evaluate the influence of typhoon field parameters on long-span flexible bridges, 1:100 reduced-scale wind field of type B terrain was reillustrated under typhoon and normal conditions utilizing passive turbulence generators in TJ-3 wind tunnel, and wind-induced performance tests of aero-elastic model of long-span Guangzhou Xinguang arch bridge were carried out as well. Furthermore, aerodynamic admittance function about lattice cross section in mid-span arch lib under the condition of higher turbulence intensity of typhoon field was identified via using high-frequency force-measured balance. Based on identified aerodynamic admittance expressions, Wind-induced stochastic vibration of Xinguang arch bridge under typhoon and normal climates was calculated and compared, considering structural geometrical non-linearity, stochastic wind attack angle effects, etc. Thus, the aerodynamic response characteristics under typhoon and normal conditions can be illustrated and checked, which are of satisfactory response results for different oncoming wind velocities with resemblance to those wind tunnel testing data under the two types of climate modes.

• Nuclear Engineering and Technology
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• 제43권2호
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• pp.187-194
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• 2011

Korea Nuclear Fuel is developing the X-GEN fuel which shows high performance and robust reliability for the worldwide supply. However, the simplified code systems such as CESEC-III which were developed in 1970s are still used in the current Non-LOCA safety analysis of OPR1000 and APR1400 plants. Therefore, it is essential to secure an advanced safety analysis methodology to make the best use of the merits of X-GEN fuel. To accomplish this purpose, the $\b{i}$ntegrated $\b{s}$afety $\b{a}$nalysis $\b{m}$ethodology (iSAM), is developed by selecting the best-estimate thermal-hydraulic code RETRAN. iSAM possesses remarkable advantages, such as generality, integrity, and designer-friendly features. That is, iSAM can be applied to both OPR1000 and APR1400 plants and uses only one computer code, RETRAN, in the whole scope of the non-LOCA safety analyses. Also the iSAM adopts the unique and automatic initialization and run tool, $\b{a}$utomatic $\b{s}$teady-$\b{s}$tate $\b{i}$nitialization and $\b{s}$afety analysis too l (ASSIST), to enable unhandy designers to use the new design code RETRAN without difficulty. In this paper, a brief overview of the iSAM is given, and the results of applying the iSAM to typical non-LOCA transients being checked during the reload design are reported. The typical non-LOCA transients selected are the single control element assembly withdrawal (SCEAW) accident, the asymmetric steam generator transients (ASGT), the locked rotor (LR) accident, and bank CEA withdrawal (BCEAW) event. Comparison to current licensing results shows a close resemblance; thus, it reveals that the iSAM can be applied to the non-LOCA safety analysis of OPR1000 and APR1400 plants.

• Anatomy and Cell Biology
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• 제51권4호
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• pp.236-242
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• 2018

The dog frontal sinus may represent an alternative model dental implant research; its topographical resemblance to the maxillary sinus renders it a potentially favorable experimental environment. The aim of this study was thus to elucidate the anatomical configuration of the canine frontal sinus and histological characteristics, and to determine whether it could be a new canine experimental model for dental implant research. Twenty-four sides of canine frontal bones were harvested. The distance from the nasion to the emerging point of the lateral aspect of the canine frontal sinus was measured with the aid of Lucion software. The thicknesses of the canine frontal sinus wall were measured, and the two specimens stained with hematoxylin and eosin. The mean distance from the nasion to the emerging point of the lateral aspect of the canine frontal sinus was 16.0 mm. The mean thicknesses of the canine frontal bone at 3, 6, 9, 12, and 15 mm lateral to the midsagittal plane were 2.3, 2.7, 3.2, 3.8, and 3.7 mm, respectively. The canine frontal sinus was lined with pseudostratified ciliated columnar epithelium. These data suggest that the canine frontal sinus is a suitable alternative to the canine maxillary sinus as a model for studying various sinus augmentation protocols.

• 비교문화연구
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• 제25권
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• pp.213-236
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• 2011

The negative symbol of 'American imperialism', which was reinterpreted superimposed on the symbol imposed on Japanese imperialism in the 1945 Liberation of Korea, was more amplified added by the experiences of the bombing and massacre by US troops during the Korean War. In other words, the symbol of the extreme 'American imperialism' in the liberation in which even the role of America contributing to the liberation of Josun had been denied had continued for a long time adhered to and amplified through the war. Thus, unlike the current emphasis laid by North Josun, the assertion in the form of 'American imperialism=Korean wolf' is an idea made from the mixture of fact and fiction combined with the theory of imperialism rediscovered in the liberation and the experience of massacre during the Korean War. And this superimposed symbol for American imperialism naturally causes the problem of being superimposed also on the symbol of North Josun. And the extreme formalization for 'good' and 'bad' sides was based on the dichotomous compositions of beauty and ugliness, good and evil. The ground for saying that an act by a good side is 'unconditionally' legitimate is nowhere found. The anti-American viewpoint rediscovered in such an extreme form results in one aspect of criticism and resemblance as a result of being locked up in the same violence which one has rejected by oneself. The anti-American viewpoint going on in the form of anti-imperialist nationalism leaves nothing except another terrible retaliation for terrible brutality. It is self-evident that one can never get out of the enchanting power of imperialism which North Josun has continuously criticized in a ring of violence and vengeance, the familiar grammar commanded by North Josun literature.