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무료 (73건) | 유료 (118,120건) | 전체 (118,193건)
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15 p
A Comparative Assessment of the Efficacy of Frequency Ratio

The rapid climatic changes being caused by global warming are resulting in abnormal weather conditions worldwide, which in some regions have increased the frequency of landslides. This study was aimed to analyze and compare the landslide susceptibility using the Frequency Ratio (FR), Statistical Index, Weight of Evidence, Certainty Factor, and Index of Entropy (IoE) at Woomyeon Mountain in

자연과학분야 | 15 page | 조회 6건 | 등록자 한국학술정보(주) | 5,000원 | 등록일 2020.04.03

태그: Comparative, Assessment, Efficacy, Frequency, Ratio, Statistical, Index, Weight, Evidence, Certainty, Factor, Entropy, Landslide, Susceptibility, Mapping

10 p
Evaluation of the Population Distribution Using GIS-Based Geostatistical Analysis in Mosul City

The purpose of this work was to apply geographical information system (GIS) for geostatistical analyzing by selecting a semi-variogram model to quantify the spatial correlation of the population distribution with residential neighborhoods in the both sides of Mosul city. Two hundred and sixty-eight sample sites in 240 km2 are adopted. After determining the population distribution with respect t

자연과학분야 | 10 page | 조회 5건 | 등록자 한국학술정보(주) | 4,000원 | 등록일 2020.04.03

태그: Evaluation, Population, Distribution, Using, GIS, Based, Geostatistical, Analysis, Mosul, City

13 p
An Artificial Intelligence Method forthe Prediction of Near-and Off-Shore Fish Catch Using Satellite and Numerical Model Data

The production of near- and off-shore fisheries in South Korea is decreasing due to rapid changes in the fishing environment, particularly including higher sea temperature in recent years. To improve the competitiveness of the fisheries, it is necessary to provide fish catch information that changes spatiotemporally according to the sea state. In this study, artificial intelligence models th

자연과학분야 | 13 page | 조회 5건 | 등록자 한국학술정보(주) | 4,800원 | 등록일 2020.04.03

태그: Artificial, Intelligence, Method, Prediction, Near, Off, Shore, Fish, Catch, Using, Satellite, Numerical, Model, Data

11 p
Evaluating the Contribution ofSpectral Featuresto Image Classification Using Class Separability

Image classification needs the spectral similarity comparison between spectral features of each pixel and the representative spectral features of each class. The spectral similarity is obtained by computing the spectral feature vector distance between the pixel and the class. Each spectral feature contributes differently in the image classification depending on the class separability of the spe

자연과학분야 | 11 page | 조회 6건 | 등록자 한국학술정보(주) | 4,600원 | 등록일 2020.04.03

태그: Evaluating, Contribution, Spectral, Features, Image, Classification, Using, Class, Separability

13 p
Land Use Feature Extraction and Sprawl Development Prediction from Quickbird Satellite Imagery Using Dempster-Shafer and Land Transformation Model

Accurate knowledge of land use/land cover (LULC) features and their relative changes over upon the time are essential for sustainable urban management. Urban sprawl growth has been always also a worldwide concern that needs to carefully monitor particularly in a developing country where unplanned building constriction has been expanding at a high rate. Recently, remotely sensed imageries with

자연과학분야 | 13 page | 조회 8건 | 등록자 한국학술정보(주) | 4,800원 | 등록일 2020.04.03

태그: Land, Use, Feature, Extraction, Sprawl, Development, Prediction, Quickbird, Satellite, Imagery, Using, Dempster, Shafer, Transformation, Model

11 p
A Case of the 2019 Unbong Mountain Fire in Busan - 자연과학논문

Forest fire is a critical disaster that causes massive destruction of forest ecosystem and economic loss. Hence, accurate estimation of the burned area is important for evaluation of the degree of damage and for preparing baseline data for recovery. Since most of the area size damaged by wildfires in Korea is less than 1 ha, it is necessary to use satellite or drone images with a resolution o

자연과학분야 | 11 page | 조회 6건 | 등록자 한국학술정보(주) | 4,600원 | 등록일 2020.04.03

태그: Detection, Wildfire, Damaged, Areas, Using, Kompsat, Image, Case, Unbong, Mountain, Fire, Busan, South, Korea

13 p
Indiausing Multi-temporal Data in Google Earth Engine

Seasonal changes in river water vary seasonally as well as locationally, and the assessment is essential. In this study, we used the recent technique of post-classification by using the Google earth engine (GEE) to map the seasonal changes in Mahanadi river of Odisha. However, some fixed problems results during the rainy season that affects the livelihood system of Cuttack such as flooding,

자연과학분야 | 13 page | 조회 6건 | 등록자 한국학술정보(주) | 4,800원 | 등록일 2020.04.03

태그: Seasonal, Water, Change, Assessment, Mahanadi, River, India, using, Multi, temporal, Data, Google, Earth, Engine

8 p
Comparison of methods forthe proportion of true null hypotheses in microarray studies

We consider estimating the proportion of true null hypotheses in multiple testing problems. A traditional multiple testing rate, family-wise error rate is too conservative and old to control type I error in multiple testing setups; however, false discovery rate (FDR) has received significant attention in many research areas such as GWAS data, FMRI data, and signal processing. Identify diffe

자연과학분야 | 8 page | 조회 5건 | 등록자 한국학술정보(주) | 4,000원 | 등록일 2020.04.03

태그: Comparison, methods, proportion, true, null, hypotheses, microarray, studies

13 p
Principal component analysis for Hilbertian functional data

In this paper we extend the functional principal component analysis for real-valued random functions to the case of Hilbert-space-valued functional random objects. For this, we introduce an autocovariance operator acting on the space of real-valued functions. We establish an eigendecomposition of the autocovariance operator and a Karuhnen-Loeve expansion. We propose the estimators of the eigen

자연과학분야 | 13 page | 조회 4건 | 등록자 한국학술정보(주) | 4,800원 | 등록일 2020.04.03

태그: Principal, component, analysis, Hilbertian, functional, data

20 p
aBayesian perspective

A climate-impact projection usually consists of several stages, and the uncertainty of the projection is known to be quite large. It is necessary to assess how much each stage contributed to the uncertainty. We call an uncertainty quantification method in which relative contribution of each stage can be evaluated as uncertainty decomposition. We propose a new Bayesian model for uncertainty dec

자연과학분야 | 20 page | 조회 5건 | 등록자 한국학술정보(주) | 5,500원 | 등록일 2020.04.03

태그: Uncertainty, decomposition, climate, change, impact, assessments, Bayesian, perspective

12 p
An efficient algorithm forthe non-convex penalized multinomial logistic regression

In this paper, we introduce an efficient algorithm for the non-convex penalized multinomial logistic regression that can be uniformly applied to a class of non-convex penalties. The class includes most non-convex penalties such as the smoothly clipped absolute deviation, minimax concave and bridge penalties. The algorithm is developed based on the concave-convex procedure and modified local q

자연과학분야 | 12 page | 조회 5건 | 등록자 한국학술정보(주) | 4,700원 | 등록일 2020.04.03

태그: efficient, algorithm, convex, penalized, multinomial, logistic, regression

12 p
Comparison of parameter estimation methodsfornormal inverse Gaussian distribution

This paper compares several methods for estimating parameters of normal inverse Gaussian distribution. Ordinary maximum likelihood estimation and the method of moment estimation often do not work properly due to restrictions on parameters. We examine the performance of adjusted estimation methods along with the ordinary maximum likelihood estimation and the method of moment estimation by simula

자연과학분야 | 12 page | 조회 5건 | 등록자 한국학술정보(주) | 4,700원 | 등록일 2020.04.03

태그: Comparison, parameter, estimation, methods, normal, inverse, Gaussian, distribution

18 p
Estimation of the exponentiated half-logistic distribution based on multiply Type-I hybrid censoring

In this paper, we derive some estimators of the scale parameter of the exponentiated half-logistic distribution based on the multiply Type-I hybrid censoring scheme. We assume that the shape parameter λ is known. We obtain the maximum likelihood estimator of the scale parameter σ. The scale parameter is estimated by approximating the given likelihood function using two different Taylor series

자연과학분야 | 18 page | 조회 5건 | 등록자 한국학술정보(주) | 5,300원 | 등록일 2020.04.03

태그: Estimation, exponentiated, half, logistic, distribution, based, multiply, Type, hybrid, censoring

13 p
Geometric charts with bootstrap-based control limits usingthe Bayes estimator

Geometric charts are effective in monitoring the fraction nonconforming in high-quality processes. The in-control fraction nonconforming is unknown in most actual processes; therefore, it should be estimated using the Phase I sample. However, if the Phase I sample size is small the practitioner may not achieve the desired in-control performance because estimation errors can occur when the par

자연과학분야 | 13 page | 조회 5건 | 등록자 한국학술정보(주) | 4,800원 | 등록일 2020.04.03

태그: Geometric, charts, bootstrap, based, control, limits, using, Bayes, estimator

17 p
A risk analysis of step-down equity-linked securities basedon regime-switching copula

The globalization of financial markets has broadened investment opportunities. International investors’ investment portfolios consist of financial instruments from various countries; consequently, the risks associated with economic dependence among countries should be carefully considered. Step-down equity-linked securities (ELS) are a structured financial product that have recently become pop

자연과학분야 | 17 page | 조회 4건 | 등록자 한국학술정보(주) | 5,200원 | 등록일 2020.04.03

태그: risk, analysis, step, equity, linked, securities, based, regime, switching, copula

21 p
A multivariate latent class profile analysis for longitudinal datawitha latent group variable

In research on behavioral studies, significant attention has been paid to the stage-sequential process for multiple latent class variables. We now explore the stage-sequential process of multiple latent class variables using the multivariate latent class profile analysis (MLCPA). A latent profile variable, representing the stage-sequential process in MLCPA, is formed by a set of repeatedly m

자연과학분야 | 21 page | 조회 6건 | 등록자 한국학술정보(주) | 5,600원 | 등록일 2020.04.03

태그: multivariate, latent, class, profile, analysis, longitudinal, data, variable

10 p
Analysisof bivariate recurrent event data with zero inflation

Recurrent event data frequently occur in clinical studies, demography, engineering reliability and so on (Cook and Lawless, The Statistical Analysis of Recurrent Events, Springer, 2007). Sometimes, two or more different but related type of recurrent events may occur simultaneously. In this study, our interest is to estimate the covariate effect on bivariate recurrent event times with zer

자연과학분야 | 10 page | 조회 4건 | 등록자 한국학술정보(주) | 4,000원 | 등록일 2020.04.03

태그: Analysis, bivariate, recurrent, event, data, zero, inflation

14 p
Statistical tests for biosimilarity basedon relative distance between follow-on biologics for ordinal endpoints

Investigations of biosimilarity between reference drugs and test drugs required statistical tests; in addition, statistical tests to evaluate biosimilarity have been recently proposed. Ordinal outcome data has been observed in research; however, appropriate statistical tests to deal with ordinal endpoints for biosimilar have not yet been proposed. This paper extends existing design for ordina

자연과학분야 | 14 page | 조회 7건 | 등록자 한국학술정보(주) | 4,900원 | 등록일 2020.04.03

태그: Statistical, tests, biosimilarity, based, relative, distance, follow, biologics, ordinal, endpoints

10 p
민화 화훼도를 모티브로한 헤어아트 작품

Folk paintings symbolize the noble spirit, religion, myths, emotions, ideologies, and leisure of life and reveal the world view and aesthetics of our ancestors. Among folk paintings that express cultural tradition, flower paintings are used as a resource for various creative designs as they provide eternal inspiration and wonder of the nature’s beauty. Therefore, I believe studying chara

자연과학분야 | 10 page | 조회 4건 | 등록자 한국학술정보(주) | 4,000원 | 등록일 2020.04.03

태그: 민화, 화훼도, 모티브, 헤어아트, 헤어, 아트, 작품, 연구

7 p
발아배지성분에 따른 발아현미 추출물의 생리활성

This study was supposed to determine the bioactive effects of germinated brown rice extract with high contents of γ-aminobutyric acid(GABA). The optimized germination medium containing black garlic, black beans, blueberry fruit, inonotus obliquus mushroom, black ginseng, was confirmed by measuring the GABA content of germinated brown rice according to the change of germination medium condi

자연과학분야 | 7 page | 조회 6건 | 등록자 한국학술정보(주) | 4,000원 | 등록일 2020.04.03

태그: 발아, 발아배지, 배지, 성분, 발아현미, 현미, 추출물, 생리활성연구, 생리, 활성, 연구

7 p
Copper Tripeptide-1를 함유한퍼머넌트 환원제의 웨이브 효과(1)

Virgin hairs were perming with an ammonium thioglycolate reducing agent and the copper tripeptide-1 peptide was added to the ammonium thioglycolic acid reducing agent for perming. The conclusion is as follows. Reducing agent containing copper tripeptide-1 peptide in thioglycolic acid Wave formation, wave persistence, and moisture content were high. However, the surface of the hair showed dam

자연과학분야 | 7 page | 조회 6건 | 등록자 한국학술정보(주) | 4,000원 | 등록일 2020.04.03

태그: Copper, Tripeptide, 함유, 퍼머넌트, 환원제, 웨이브, 효과

9 p
혼합비율을 달리한 황백과 소목 추출물의 모발염색성

This study is known to be expressed in a variety of colors with Phelledendron amurense. and Caesalponia sappan extract. As a result, it was found to be chromating in all processing time and temperature conditions, of which it showed the highest color difference value at 30oC in 10 min. The dyed properties were the highest in the same conditions. Cleaning fastness showed a tendency to increase

자연과학분야 | 9 page | 조회 6건 | 등록자 한국학술정보(주) | 4,000원 | 등록일 2020.04.03

태그: 혼합, 비율, 황백, 소목, 추출물, 모발염색, 모발, 염색, 모발염색성, 염색성

10 p
자수정듀 온열요법을 이용한 안면피부관리가 안구건조

The purpose of this study was to examine the effects of Jewel Skin dew Thermotherapy on dry eyes in 15 college women in their 20s. The therapy was applied 30 minutes per session, twice a week, 10 times for 5 weeks from November 01 to December 06, 2018. Visual characteristics, the subjective symptoms of dry eyes and eye fatigue levels were measured. Collected data were analyzed by SPSS WIN 2

자연과학분야 | 10 page | 조회 5건 | 등록자 한국학술정보(주) | 4,000원 | 등록일 2020.04.03

태그: 자수정, 온열요법, 온열, 요법, 이용, 안면피부관리, 안면, 피부, 관리, 안구건조, 안구, 건조, 영향

5 p
글릭콜릭산 필링 후 rhEGF and Palmitoyl pentapeotide-4의 피부재생

Glycolic acid peel is a popular superficial peeling technique associated with low morbidity and prompt recovery. These processes, as well as the final step of corneodesmolysis, which mediates exfoliation, are often disturbed by environmental conditions, resulting in dry, flaky skin conditions. Therefore, aftercare is required to avoid these side effects and achieve the maximum possible im

자연과학분야 | 5 page | 조회 6건 | 등록자 한국학술정보(주) | 4,000원 | 등록일 2020.04.03

태그: 글릭콜릭산, 필링, rhEGF, Palmitoyl, pentapeotide, 피부, 재생, 효과

6 p
발효삼칠추출물의 항산화 증진 및 항염 - 자연과학 연구논문

The aim of this study was to compare the antioxidative and anti-inflammatory activities of non-fermented or Bacillus subtilis-fermented notoginseng root and flowers. The extracts were NGR (notoginseng root), FNGR (fermented notoginseng root), NGF (notoginseng flower), and FNGF (fermented notoginseng flower). Free radical scavenging activities measured by DPPH and ABTS increased dosedependen

자연과학분야 | 6 page | 조회 4건 | 등록자 한국학술정보(주) | 4,000원 | 등록일 2020.04.03

태그: 발효, 삼칠추출물, 삼칠, 추출물, 항산화, 항산, 증진, 항염, 효과

12 p
컴퓨터 그래픽(Computer Graphic)을 활용한 특수분장 교과목개발

This study highlights the significant needs of the special effects makeup industry and begins to provide a solution through the development of a curriculum integrating special effects makeup and computer graphics. The value of the work is reflected in the investment made by the government of the People’s Republic of South Korea in the Korean movie industry as a growth industry. This work create

자연과학분야 | 12 page | 조회 5건 | 등록자 한국학술정보(주) | 4,700원 | 등록일 2020.04.03

태그: 컴퓨터, 그래픽, Computer, Graphic, 활용, 특수분장, 특수, 분장, 교과목, 개발

9 p
모발염색에 따른 외모만족과 심리적행복감

This study aimed to elucidate effects of the recent trends in dying methods and various colors, which were advanced from the conventional dying, on individual appearance satisfaction as well as thereby following psychological happiness, particularly focusing on male and female aged between 20 and 30 who reside in Daegu and Gyeongbuk region. This study conducted a survey using questionnaire a

자연과학분야 | 9 page | 조회 6건 | 등록자 한국학술정보(주) | 4,000원 | 등록일 2020.04.03

태그: 모발염색, 모발, 염색, 외모만족, 외모, 만족, 심리적, 심리, 행복감, 영향

10 p
중국청나라 여성 전통 복식의 나비 초문 문양을 활용한 네일아트 디자인개발

After 5000 years, characteristics of traditional patterns in the Qing Dynasty costume is becoming more changeable and mature. It is an important entry point to study the combination of Chinese traditional dress patterns and modern design concepts. The clothing pattern of Qing Dynasty was also applied to different design fields. This study attempted to produce and propose nail art design with a

자연과학분야 | 10 page | 조회 5건 | 등록자 한국학술정보(주) | 4,000원 | 등록일 2020.04.03

태그: 중국, 청나라, 여성, 전통, 복식, 나비, 초문, 문양, 활용, 네일아트, 네일, 아트, 디자인, 개발

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