• Geomechanics and Engineering
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• 제1권3호
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• pp.259-262
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• 2009

This paper examines the potential of relevance vector machine (RVM) in prediction of pullout capacity of small ground anchors. RVM is based on a Bayesian formulation of a linear model with an appropriate prior that results in a sparse representation. The results are compared with a widely used artificial neural network (ANN) model. Overall, the RVM showed good performance and is proven to be better than ANN model. It also estimates the prediction variance. The plausibility of RVM technique is shown by its superior performance in forecasting pullout capacity of small ground anchors providing exogenous knowledge.

• Journal of Korean Dental Science
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• 제3권2호
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• pp.34-39
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• 2010

In our daily practice, we think about the diagnosis of our patient and get into a situation wherein we have to make a clinical decision. Diagnosis and treatment come from the knowledge and experiences that each dentist should have, but sometimes, we can have doubts on our decisions. "On what evidence did I make such decision? Was that really right?" Drawing our attention these days as a possible answer to this question, evidence-based dentistry seeks to apply the best available evidence gained from the scientific method to medical decision making. To make a good decision, the strength of evidence is assessed. Specifically, randomized controlled trial, systematic review, and meta-analysis are considered the highest level of evidence; cohort study, case control study, case series, animal study, bench test, and biological plausibility follow. With the approach of evidence-based dentistry, we can make objective, scientifically sound clinical decisions. It is also patient-oriented, incorporating clinical experiences and stressing good judgments; thorough and comprehensive, it uses transparent methodology. That is the reason evidence-based dentistry can be better than other assessment methods when we make a clinical decision in modern dentistry.

• International Journal of Naval Architecture and Ocean Engineering
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• 제7권2호
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• pp.409-425
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• 2015

In this paper, we employ a dynamics modeling method for investigating a multi-body dynamics system of semi-submersible autonomous underwater vehicles consisting of a towing vehicle operated near the water surface, a tow cable, and a towfish. The towfish, which is towed by a marine cable for the purposes of exploration or mine hunting, is modeled with a Six-Degree-of-Freedom (6-DOF) equation of motion that reflects its hydrodynamics characteristics. The towing cable, which can experience large displacements and deformations, is modeled using an absolute nodal coordinate formulation. To reflect the hydrodynamic characteristics of the cable during motion, the hydrodynamic force due to added mass and the drag force are imposed. To verify the completeness of the modeling, a few simple numerical simulations were conducted, and the results confirm the physical plausibility of the model.

• 한국한의학연구원논문집
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• 제17권3호
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• pp.35-42
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• 2011

Objectives : The terms, CAM and Integrative Medicine, have been often used to conceptualize relation between TKM and western medicine in Korea. But both terms often lead to confusion since the backgrounds of those were not being properly discussed. Methods : We researched the concepts of CAM and Integrative Medicine through the changes in definitions and research methods. Results : Although modern medical verification of CAM showed some results through scientific researches, there existed certain limitations. The term Integrative Medicine newly emerged for this reason. The rise of the new term came to criticize existing research methodologies such as RCTs or SRs. However in Korea, Integrative Medicine has often been misunderstood as a unification of two different medical systems. Conclusions : Thus, in future research of relationship between TKM and western medicine, debates on plausibility & philosophical background of TKM, and research methodology are indispensable.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2013년도 제45회 하계 정기학술대회 초록집
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• pp.136-136
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• 2013

High-resolution photoemission spectroscopy (HRPES) measurements were collected and density functional theory (DFT) calculations were conducted to track the coverage dependent variation of the absorption structure of 2-thiophenecarboxaldehyde (C4H3SCHO: TPCA) on the Ge(100) surface at room temperature. In an effort to identify the most probably adsorption structures on the Ge(100) surface, we deposited TPCA molecules at a low coverage and at a high coverage and compared the differences between the electronic features measured using HRPES. The HRPES data provided three possible adsorption structures of TPCA on the Ge(100) surfaces, and DFT calculations were used to determine the plausibility of the structures. HRPES analysis, corroborated by DFT calculations, indicated that an S-dative bonded structure was the most probable adsorption structure at relatively lower coverage levels, the [4+2] cycloaddition structure was the second most probable structure, and the [2+2]-C=O cycloaddition structure was the last probable structure on the Ge(100) surfaces at relatively higher coverage levels.

• 한국언어정보학회지:언어와정보
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• 제8권1호
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• pp.27-52
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• 2004

This paper attempts to define various notions involving focus and topic found in Korean and also employs phonetic measures to verify the plausibility of those notions that are theoretically argued for. This paper crucially relies on Prince (1981) for the notion of familiarity and its pragmatic significance, and adopts Rooth's (1985) notion of alternative set and utilizes it in the light of pragmatic interpretation. The basic idea of this paper is to decompose the notion alternative set into finer-grained components and to assign various levels of familiarity to those finer components, thereby helping define different kinds of focus and topic according to the properties of those sub-components.

• 한국멀티미디어학회논문지
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• 제21권12호
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• pp.1504-1512
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• 2018

The purpose of this study is to design and apply a simple game that can visually experience basic concepts of game mathematics in order to teach game mathematics effectively. To do this, simple games linked with game mathematical theory are to be developed by utilizing the functions provided by Unity so that students could actively learn game mathematics. To demonstrate the plausibility of this approach, "Bouncing Ball Game" was developed to understand the concept of periodicity of trigonometric functions. As a result, students were able to effectively learn how mathematical concepts related to ball movements applied to the game.

• 천문학회보
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• 제46권2호
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• pp.45.2-45.2
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• 2021

Merging of two supermassive black holes would generate gravitational waves that can be detected by the Pulsar Timing Array (PTA) in the nHz band. In order to assess the plausibility of GW detection with PTA and to develop the data analysis scheme, it is important to understand the underlying properties of black holes and black hole binaries. In this work, we present mass and redshift distributions of black hole mergers using the Horizon Run 5 (HR5) data and discuss their implications for GW detection. We find a general conjecture about the black hole merger tree is true with the Horizon Run 5. For example, a) relatively lighter black holes merge at higher redshifts and b) binary mergers do contribute to the formation of more massive black holes toward low redshifts. We also present our plan to use the black hole properties extracted from the HR5 data in order to generate simulated GW signals to be injected into actual PTA data analysis pipelines. Mass and distance obtained from the HR5 would be key ingredients to generate a more realistic PTA source data set.

• 한국과학교육학회지
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• 제27권7호
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• pp.663-675
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• 2007

세포 내의 화학 반응은 매우 복잡하고 추상적이어서 학생들이 이해하는 데 어려움을 갖고 있다. 본 연구에서는 이러한 세포 내 화학 반응에서 중요한 역할을 하는 효소 작용에 대한 이해를 돕기 위해 실험 결과 해석 과정에서 체계적 비유를 사용한 수업을 계획하고 10학년 학생들을 대상으로 이 수업이 효소 개념 이해에 미친 효과와 그 과정에서 체계적 비유가 어떤 역할을 하였는지 분석하였다. 실험반 학생들의 효소 개념 이해 정도가 대조반에 비해 유의수준 0.05에서 통계적으로 유의미한 차이를 보여 체계적 비유가 효소 개념 이해에 효과적임을 나타내었다. 효소 작용 개념을 내용별로 세분하여 살펴보면 특히 '온도 pH에 따른 효소 구조 변화와 반응 속도', '효소의 계속적 무작위적 작용'과 같이 학생들이 이해하기 어려워하는 평형 범주의 속성을 지닌 개념에 대한 이해에서 체계적 비유의 효과가 크게 나타났다. 이 과정에서 체계적 비유는 학생들의 개념 지위를 향상시키는데 긍정적인 역할을 하였다. 비유물의 가시화와 친숙성은 학생들의 효소 작용 개념에 대한 이해가능성을 높였으며, 효소 반응 실험에서 나타난 현상을 과학 개념과 연결짓는데 발판 역할을 함으로써 실험 결과를 과학 개념으로 일관성 있게 설명할 수 있게하여 개념 지위를 그럴듯함으로 향상시켰다. 또한 학생들에게 친숙한 비유는 학생들의 흥미를 유발시키고 어려운 과학 개념에 쉽게 다가갈 수 있도록 함으로써 정의적 측면에서도 매우 긍정적인 역할을 하였다.

• Nutritional Sciences
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• 제6권3호
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• pp.160-166
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• 2003

To examine the evidence that wheat bran is protective against breast cancer development and that its main mechanism of action is by modulating estrogen metabolism. This review explores the role of different experimental factors on the anticancer effects of wheat bran and the relationship of changes to estrogen metabolism by wheat bran on breast cancer risk The timing of the experimental diets in relation to carcinogen administration, the length of feeding of the experimental diets, and the level of dietary fat had an impact on the effectiveness of different doses of wheat bran in reducing breast carcinogenesis. Wheat bran supplementation resulted in significant reductions in human plasma estrogen levels but not in that of animals tested. The change in excretory metabolism of estrogen by wheat bran feeding in animals was not related to any of the tumor indices measured. The protective effect of wheat bran in breast carcinogenesis is greatest at the promotional phase and when supplemented in a high fat diet. Doses of wheat bran in the 9-12% range in diet have been consistently protective. The inconsistency observed with higher doses of wheat bran may be dependent on the animal model used. Although wheat bran's inhibitory effects on tumor growth may involve changes to estrogen metabolism, the fiber and phytochemical components of wheat bran may also act through estrogen-independent mechanisms. For a better understanding of the effect of wheat bran on breast carcinogenesis, studies comparing the effects of different wheat bran components both alone and in combination need to be performed.