• The Journal of the Petrological Society of Korea
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• v.18 no.3
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• pp.211-221
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• 2009

This study illustrates the relationship between the petrographic characteristics of micrographic granite and the topographic features around Ijin-ri. Light-brown to light- gray granite is composed of intergrown fine-grained quartz + orthoclase, displaying micrographic textures. Miarolitic cavities are abundant. Many micro-landforms including tor, tafoni, and gnamma occurred in the micrographic granite of the study area. Tafoni is dominant in the north and gnamma is dominant in south. From our study of the occurrence and textural properties, two alteration zones were clearly identified; one is an external zone (A) characterized by abundant of small sized miarolitic cavities and the other is an internal zone (B) having them less than zone A. The former is dominant in north, and the latter is dominant in south. Particular geomorphologic features such as fluting cores and raised rims are present in the Ijin-ri area. This suggests that development of miarolitic cavities played an important role in the formation of the various geomorphologic features. Consequently, the petrogenesis of the micrographic granite is related to geomorphologic features in the external zone typified by abundant tafoni such as the tiger rock, and the formation of a platform as micro-landforms is influenced by thetextural differences of host rock in the internal zone.

• The Journal of the Petrological Society of Korea
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• v.24 no.4
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• pp.347-364
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• 2015

The purpose of the work was carried out to contribute the factors related to geologic realm in the disaster stability evaluation items of the national wood culture heritages. Among the total heritages, the study targets mainly include 304 cases interpreted as a rock type in the geologic map of the bedrocks with GIS interpretation. The cases show the geologic ages, geologic provinces and rock types as the following distribution characteristics. In geologic ages, they are decreasing in the orders of Jurassic, Cretaceous, Quaternary, Precambrian, Age-unknown Cambro-Ordovician Carboniferous and Tertiary. Among the ages, the former fours occupy 285 cases (93.8%) of the targets, which show most of the wood culture heritages. In geologic provinces classified into 15, they are decreasing in the orders of Daebo intrusives, alluvium, Gyeongsang supergroup, Bulgugsa intrusives, Yeongnam massif, and Gyeonggi massif which occupy of predominant distribution 271 cases (89.1%) of them. In rock types of 52, those of 6, which are Jgr, Qa, Kp, Krt+Kav+Kav1+Kav2, Kbgr and GC2, occupy total 182 cases (59.9%) showing distinctly dominant trends from the rest of 46.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.33 no.6
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• pp.2359-2368
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• 2013

Cone penetration tests (CPTs) have been increasingly used for site characterizations. However, the site investigations using CPTs are often limited due to soil conditions depending on the cone size and capacity of the CPT system. The small sectional area of a miniature cone improves the applicability of the CPT system due to the increased capacity of the CPT system. A continuous intrusion system using a coiled rod allows fast and cost effective site investigation. In this study, the performance of the continuous intrusion miniature cone penetration test (CIMCPT) system has been evaluated by comparison tests with the standard CPT system at several construction sites in Korea. The results show that the CIMCPT system has a same performance with the CPT system and has advantages on the mobility and applicability. According to field verification tests for scale effect evaluation, the cone tip resistance evaluated by CIMCPT overestimates by 10% comparing to standard CPTs. A crawler mounted with the CIMCPT system has been implemented to improve accessibility to soft ground, and has shown improvement over the truck type CIMCPT system. Therefore, the improved CIMCPT system can be utilized as a cost effective and highly reliable soil investigation methodology to detect the depth of soft ground and to evaluate soil classification.

• The Journal of Society for e-Business Studies
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• v.22 no.3
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• pp.87-103
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• 2017

In recent years, many small and medium-sized manufacturing companies are making process innovation and product innovation through the public knowledge services. K Research institute provides different types of knowledge services in combination and due to this complexity, it is difficult to analyze the performance of knowledge service programs precisely. In this study, we derived performance items from bottom-up viewpoints, rather than top-down approaches selecting those items as in previous performance analysis. As a result, 74 items were finded from 82 companies in the K Research Institute case book, and the final result was refined to 17 items. After that a case-performance matrix was constructed, and binary data was entered to analyze. As a result, three clusters were identified through K-means clustering as 'enhancement of core competitiveness (product and patent),' 'expansion of domestic and overseas market,' and 'improvement of operational efficiency.'

• Journal of Music and Human Behavior
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• v.10 no.2
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• pp.1-33
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• 2013

The aim of this study was to systematically review the latest clinical trials in music medicine and medical music therapy for pediatric patients. Thirteen databases were searched to obtain randomized controlled/crossover design studies published between the year 2000 and 2012 in English language. Out of 1012 articles retrieved in the initial search, fifteen studies were identified based on an exclusion criteria. Overall, selected articles involved children 1 month to 18 years, sample size of 11 to 150, and total participants of 987. Studies were classified and compared as music medicine or music therapy studies through a systematic synthesis assessing general characteristics, methodological quality, measured outcomes, types of interventions and the study results. Seven music medicine and eight music therapy studies measured seven dependent variables using thirty-six different measurement tools with a large heterogeneity in the selection, type, and method of music interventions. Evaluation of the methodological quality revealed that many studies did not provide a full report of the research method, and did not meet some or most methodological standards, such as randomization, allocation concealment, double or partial blinding, and intention to treat analysis. Although overall research results were positive if not significant, poor methodological quality and heterogeneity in design and intervention strategies raise the question of research bias and trustworthiness issues. The systematic review concluded that music may have a valuable clinical effect in addressing the physical and psychosocial needs of hospitalized children, although more rigorous, homogeneous and replicable studies are greatly needed.

• Proceedings of the KAIS Fall Conference
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• 2010.11b
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• pp.1000-1004
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• 2010

본 연구는 도시지역 1개 초등학교 5 6학년과 농촌지역 일개 군의 2개 초등학교 5 6학년을 대상으로 도시와 농촌 초등학교 5 6학년의 변비 유병률을 파악하고, 이와 관련된 배변행태, 식습관 및 운동 습관 요인, 스트레스 등을 분석하여, 학생들이 바람직하고 올바른 생활습관을 갖도록 하고 학생들의 변비 증상을 개선하고 예방하여 건강증진을 도모하는 기초자료로 활용하고자 시도된 단면조사연구이다. 연구대상자는 임의 추출방법에 의하여 선정된 3개 초등학교 5 6학년 재학생 총 585명을 대상으로 하였다. 연구방법은 2009년 10월에 임의로 선정된 3개 학교의 보건선생님을 통하여 연구대상자에게 설문지를 배포하여 대상자 스스로 기입하도록 하였다. 본 연구의 결과로 자가보고에 의한 변비의 유병률은 전체 22.1%로 남학생 16.9%, 여학생 27.0% 이었으며, 주중 3회 미만의 배변횟수를 변비로 정의하였을 경우 변비 유병률은 15.7%로 남학생 11.6%, 여학생 19.6%로 여학생의 변비 발생률이 높았다. 거주지역별로는 농촌 지역에 거주하는 대상자가 도시 지역에 거주하는 대상자보다 변비 발생이 높은 것으로 나타났으며 변비발생과 운동습관과의 관계에 있어서는 운동을 하지 않는 대상자가 변비 유병율이 높게 나타났다. 변비 분류에 의한 배변습관에서는 변비군에서 배변 시간이 10분 이상이 많았으며, 시험기간 중 변비경향 또는 변을 보지 못 한다가 정상군보다 높게 나타났다. 또한, 변비군의 치료관련 행태에서는 18.3%가 변비치료를 위해 변비약을 복용한 경험이 있는 것으로 조사되었으며, 배변 형태에 변화가 있을 경우 상담자로는 가족 또는 혼자 판단하는 경우가 대부분이었다. 변비 분류에 의한 배변 관련 증상의 분포는 변비군에서 항문통증 경험, 항문 출혈 경험 등이 정상군보다 높게 나타났다. 주중 3회 미만의 배변횟수를 변비로 정의 하였을 경우와 배변 관련 증상의 분포는 변비군에서 항문통증 경험, 배변 후 상쾌하지 못함 등이 정상군보다 높게 나타났다. 학교에서의 배변여부는 변비군에서 학교에서 배변을 하는 비율이 정상군보다 높았다. 변비여부를 종속변수로 하여 변비발생에 영향을 미치는 요인을 분석한 결과 성, 학년, 거주지역에서 변비발생의 위험요인으로 도출되었다. 주 3회 미만의 배변횟수를 변비라고 정의할 경우, 변비발생에 영향을 미치는 요인을 분석한 결과 성, 학년, 모직장 유무, 운동이 변비발생의 위험요인으로 도출되었다. 본 연구에서는 초등학교 5 6학년을 대상으로 배변 행태, 식습관, 스트레스, 학교에서의 배변습관 등을 조사해 본 결과 상당수 학생들의 배변 실태가 좋지 않은 것을 알 수 있었다. 바람직하지 않은 식습관, 운동 부족, 과다한 스트레스 등은 학생들의 변비 발생의 위험 요인이 될 수 있으므로 변비의 발생을 예방하기 위해서는 매일 적절한 운동을 하고 인스턴트음식과 패스트푸드섭취 등을 줄이고 올바른 생활습관 및 스트레스 관리 등이 필요하며 부모들의 자녀에 대한 관심이 더욱 필요하다. 이를 위해서 초등학교부터 변비 예방을 위한 체계적인 프로그램을 만들고, 실시하여야 하며 또한 보건교육을 통하여 건강한 생활습관을 습득하고 변비를 예방하는 노력이 필요하다 하겠다.

• Journal of Korea Multimedia Society
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• v.10 no.8
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• pp.1068-1077
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• 2007

This paper proposes a method that extracts characteristics of cracks such as length, thickness and direction from a concrete slab surface image with image processing techniques. These techniques extract the cracks from the concrete surface image in variable conditions including bad image conditions) using the ART2-based RBF network to recognize the dominant directions -45 degree, 45 degree, horizontal and vertical) of the extracted cracks from the automatically calculated specifications like the lengths, directions and widths of the cracks. Our proposed extraction algorithms and analysis of the concrete cracks used a Robert operation to emphasize the cracks, and a Multiple operation to increase the difference in brightness between the cracks and background. After these treatments, the cracks can be extracted from the image by using an iterated binarization technique. Noise reduction techniques are used three separate times on this binarized image, and the specifications of the cracks are extracted form this noiseless image. The dominant directions can be recognized by using the ART2-based RBF network. In this method, the ART2 is used between the input layer and the middle layer to learn, and the Delta learning method is used between the middle layer and the output layer. The experiments using real concrete images showed that the cracks were effectively extracted, and the Proposed ART2-based RBF network effectively recognized the directions of the extracted cracks.

• Journal of Korea Multimedia Society
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• v.8 no.11
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• pp.1496-1509
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• 2005

In this paper, an adaptive license plate recognition system which detects and recognizes license plate at real-time by using projected plane convolution and Decision Tree Classifier is proposed. And it was tested in circumstances which presence of complex background. Generally, in expressway tollgate or gateway of parking lots, it is very difficult to detect and segment license plate because of size, entry angle and noisy problem of vehicles due to CCD camera and road environment. In the proposed algorithm, we suggested to extract license plate candidate region after going through image acquisition process with inputted real-time image, and then to compensate license size as well as gradient of vehicle with change of vehicle entry position. The proposed algorithm can exactly detect license plate using accumulated edge, projected convolution and chain code labeling method. And it also segments letter of license plate using adaptive binary method. And then, it recognizes license plate letter by applying hybrid pattern vector method. Experimental results show that the proposed algorithm can recognize the front and rear direction license plate at real-time in the presence of complex background environments. Accordingly license plate detection rate displayed $98.8\%$ and $96.5\%$ successive rate respectively. And also, from the segmented letters, it shows $97.3\%$ and $96\%$ successive recognition rate respectively.

• Journal of IKEEE
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• v.23 no.4
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• pp.1440-1447
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• 2019

Currently, the prevalence of autism spectrum disorders in children is reported to be higher and shows various types of disorders. In particular, they are having difficulty in communication due to communication impairment in the area of social communication and need to be improved through training. Thus, this study proposes a method of acquiring voice information through a microphone mounted on a robot designed through preliminary research and using this information to make intelligent motions. An ANN(Artificial Neural Network) was used to classify the speech data into robot motions, and we tried to improve the accuracy by combining the Recurrent Neural Network based on Convolutional Neural Network. The preprocessing of input speech data was analyzed using MFCC(Mel-Frequency Cepstral Coefficient), and the motion of the robot was estimated using various data normalization and neural network optimization techniques. In addition, the designed ANN showed a high accuracy by conducting an experiment comparing the accuracy with the existing architecture and the method of human intervention. In order to design robot motions with higher accuracy in the future and to apply them in the treatment and education environment of children with autism.

• The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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• v.17 no.3
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• pp.160-180
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• 2012

We have studied the eukaryotic plankton species diversity to compare the community structure of fresh and brackish waters in the lower reaches of the Nakdong River using metagenomic methods. We constructed 18S rDNA clone libraries of total DNAs extracted from environmental water samples collected at Mulgeum (MG100929, fresh) and Eulsukdo bridge (ES, brackish). Through the steps of colony PCR, PCR-RFLP, sequencing and similarity analysis, we discovered the diverse species composition of eukaryotic plankton. Total 338 clones (170 at MG100929 and 168 at ES) were analyzed, and then we found 74 phylotypes (49 for MG100929 and 25 for ES). From the phylogenetic analysis, we confirmed various eukaryotic plankton of broad range of taxonomic groups, including Stramenopiles, Cryptophyta, Viridiplantae, Alveolata, Rhizaria, Metazoa, and Fungi. We also found several unreported species in Korea and candidates of new taxonomic entities at levels higher than genus. Especially, the cryptic species diversity including unreported phylotypes of Pirsonia (Stramenopiles) and Perkinsea (Alveolata) suggests that the molecular monitoring method can produce new informative biological data in monitoring the changes in the Nakdong River Mouth ecosystem.