• Journal of Digital Convergence
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• v.18 no.5
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• pp.485-495
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• 2020

The purpose of this study was to examine the role of self-esteem (SE) and cooperation (CO) in the effect of parental attitudes (PA) as perceived by children on the quality of peer relationships (PR). To this end, the data of 1299 boys and 1278 girls in 4th grade were analyzed using the Korean Children and Youth Panel Survey data. The correlation analysis, confirmatory factor analysis, structural equation modeling using phantom variables and bootstrapping were performed by using SPSS and AMOS programs. The results of this study are as follows. First, perceived PA had a significant effect on SE, CO, and PR, SE had a significant effect on CO and PR, and CO had a significant effect on PR. Second, the serial multi-mediating model that assumed that SE and CO mediate the relationship between PA and PR was found to be appropriate. These results suggest that it is important to consider the child's self-esteem and cooperation with parenting attitudes to improve the child's peer relationship. Future research and clinical implications were discussed.

• Journal of Biomedical Engineering Research
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• v.20 no.6
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• pp.573-581
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• 1999

Although phonocardiography by auscultation has been used in diagnosis long time ago, recognition of heart sound was tried only restricted fields such as the first heart sound, the second heart sound, and specific valve operation for the purpose of analyzing local function or operation of heart and developments of heart sound recognition in full cycle are quite insignificant. in this paper, we proposed a recognition method which extracts features of heart sound in full cycle and classllies heart sounds This proposed recognition algorithm is based on detecting the first and second heart sounds in thme domain. The algorithm classifics heart sound into several classes by extracting the important time blocks and analyzing the peak position, integration values and statistical variables. Heart sounds are classified into normal, early systolic murmur, late systolic mumur, early diastolic murmur, late diastolie murmur, continuous murmur. We can verify our algorithm is useful from the results which show the average recognition rate of heart sounds is 88 perecnt. Recognition error was occurred mainly in early systolic murmur.

• Economic and Environmental Geology
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• v.43 no.2
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• pp.163-176
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• 2010

We report twenty data for early lavas erupted during the initial period of formation of Jeju Island on the basis of review on 539 data of whole-rock greochemistry and $^{40}Ar/^{39}Ar$ age dating out of mainly core samples from 69 boreholes drilled in the lower land since 2001 and 66 outcrop sites. Out of 69 boreholes, the early lava flow units are identified from samples collected from Beophocheon (EL 235 m, 210 m deep), Donnaeko (EL 240 m, 230 deep), Donghong-S (EL 187 m, 340 m deep), 05Donghong (EL. 187.6 m, 340 m deep), Dosoon (EL 305 m, 287 m deep), Sangye (EL 230 m, 260 m deep), Mureung-1 (EL 10.2 m, 160 m deep), and Gapa (EL 17.5 m, 92 m deep), which are located in the southern and southwestern portion of Jeju Island. While, the well-known outcrops from Sanbangsan, Wolrabong, Wonmansa, and Kagsubawi are also reconfirmed. $^{40}Ar/^{39}Ar$ age dating results of these lavas range from 1 Ma to 0.7 Ma, indicating that the data can be useful to constrain on age and geochemical characteristics of early lava effusion period in the formation of Jeju Island. Especially, samples with trachybasalt in composition collected from 143 m to 137 m, and from 135 m to 123 m below ground surface at 05Donghong hole have the oldest ages, $992\pm21$ Ka and $988\pm38$ Ka, respectively. This study suggests that in Jeju Island the first lava with trachybasalt in composition may have effused around 1 Ma ago, and the effusion style and chemical compositions of lavas must have changed to the formation of lava domes with trachyte-trachyandesite-basaltic trachyandesite and the eruption of lavas with alkali basalt and trachybasalt intermittently during the period from 0.9 Ma to 0.7 Ma ago. It also indicates that the initial lava flows below the ground are intercalated with or underlain by the Seoguipo Formation except for several exposed domal structure areas such as Sanbangsan and Kagsubawi, implying that the early lava effusion may have intermittently and sporadically occurred with nearby hydrovolcanism and sedimentation.

• Parasites, Hosts and Diseases
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• v.21 no.1
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• pp.87-94
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• 1983

Kala-azar는 우리나라에는 분포하지 않는 것으로 인정되고 있으나 과거 중국에서 감염되어 국내에서 관찰된 보고가 있는 질병이다. 최근에 중동 지방에서 감염되어 귀국하고 발병하였다고 생각되는 예를 보고한다. 서울에 주소를 둔 26세의 한국인 남자가 1년간 사우디 아라비아에서 건설기능공으로 근무하고 1981년 9월 귀국하여 약 8개월 후인 1982년 5월 경부터 심한 피로감, 전신쇠약, 복부의 수물등을 느끼기 시작하였다. 환자가 국립서울병원을 거쳐 서울대학교병원에 1982년 9월 17일 입원할 당시에는 간과 비장이 모두 14cm정도 만져질 만큼 부어있었고, 심한 체중 감소(4개월간 14kg의 감소), 적혈구, 백혈구, 혈소판등 모든 혈구의 감소등이 관찰되었다. 간생검을 통해 amastigote가 관찰되고 이는 투사전자현미경을 통해서 전형적인 amastigote형으로 확인되었다. 환자는 국외에서 구한 약제인 sodium antimony gluconate(Pentostam )와 각종 보조요법에 의해 치료를 받았다. 퇴원 직전에 시행한 간생검에서 괴사된 간 조직이 섬유화로 대치된 것이 확인되었고 충체는 관찰되지 않았다. 이 Kala-azar 에는 1952년 만주에 유입되어 보고된 3예 이후로는 처음 관찰된 것으로 중동에서 유입된 것으로는 첫번째 보고례이다. 최근 급격히 늘어난 해외 인력진출을 감안하면 해당 지역의 열대 풍토병에 대한 다각적인 대책이 절실히 요청된다.

• Proceedings of the Korea Information Processing Society Conference
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• 2014.04a
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• pp.1012-1013
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• 2014

본 논문에서는 일상생활 중 지속적으로 심장 상태를 모니터링 할 수 있는 무구속 의자형 심탄도 측정시스템을 개발하였다. 또한 구현된 시스템에서 측정된 생체신호를 이용하여 주관적인 감정자극의 스트레스를 분석하기 위한 연구를 수행하였다. 수준을 분석하고자 하였다. 실험은 시스템에 착석하여 실시간으로 시청각 자극 실험을 수행하였고, 심박수와 심박변이도의 시간영역 및 주파수영역 파라미터를 확인하였다. 확인된 심박변이도의 파라미터는 시청각 도중 기술한 인간의 감정들을 체계화하여 2차원 공간에 여러 감정들의 관계를 나타낸 제임스 러셀(J. Russell)의 감정모델을 주관적인 감정 자극에 의한 스트레스 지표 나타내어 비교 분석하였다. 실험결과는 RMSSD, LF/HF 파라미터가 스트레스 수준 분류에 사용될 수 있는 잠재력을 가지고 있음을 증명한다.

• Proceedings of the Korean Geotechical Society Conference
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• 1992.06a
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• pp.57-86
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• 1992

본 연구에서는 기존의 PC말뚝과 PHC말뚝의 시공성과 지지력에 대한 비교확인 시험의 결과를 근거로 하여 PHC말뚝의 시공상의 장점, 특성 및 경제성을 파악하였으며, SIP공법에 의하여 PHC말뚝을 사용시 기존 PC말뚝이나 강관말뚝보다 경제성이 우수함을 확인하였다. 또한 PHC말뚝은 압축강도와 지지혁이 기존 PC말뚝보다 높을 뿐만아니라 강관말뚝과 같이 용접이음이 가능하고 말뚝의 심도가 깊은 경우에도 강관말뚝과의 대체시공이 가능하여 PHC말뚝의 성능을 극대화할 수 있는 적절한 항타장비를 사용하는 경우에는 혁신적인 원가절감이 가능함을 확인할 수 있다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.10
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• pp.5192-5198
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• 2013

The purpose of this study is to investigate the differences of opinion among the user groups in revitalizing the old urban center. To this end, the old downtown commercial street users in Gimhae traders, local and foreign visitors were surveyed. To examine the statistical significance, the chi-square test was performed. There were differences of opinion among three groups about the present condition and improvement of the street. Therefore, in activating the old commercial street we should reflect not only the opinions of merchants but also those of visitors. The results of this study are intended to be used as a reference to the revitalization of old commercial street.

• The Journal of Korean Institute of Next Generation Computing
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• v.15 no.5
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• pp.75-83
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• 2019

Direct volume rendering is a widely used method for visualizing three-dimensional volume data such as medical images. This paper proposes a method for applying depth-of-field effects to volume ray-casting to enable more realistic depth-of-filed rendering in direct volume rendering. The proposed method exploits a camera model based on the human perceptual model and can obtain realistic images with a limited number of rays using jittered lens sampling. It also enables interactive exploration of volume data by on-the-fly calculating depth-of-field in the GPU pipeline without preprocessing. In the experiment with various data including medical images, we demonstrated that depth-of-field images with better depth perception were generated 2.6 to 4 times faster than the conventional method.

• Journal of Digital Convergence
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• v.12 no.6
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• pp.449-456
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• 2014

This study aims to contribute to our knowledge on gender role identity of middle-aged women within the Korean context. This research adapting Q methodology created a sampling distribution of P with 40 middle-aged women between 40-60 years old. We put each of 40 Q samples to become a forced distribution into 9 scales. And then we conducted a secondary analysis of the results from the principal component factor analysis by the PC QUANL program. Gender role identities of middle aged women were classified as four types: "affectionate-sensitive type", "affectionate-confident type", "assertive-confident type", and "sensitive-dominant type". Most of the middle-aged women in Korea tend to keep their original gender role identities. Some of women, however, experience the gender role identity change over time that their traits of traditional caring become more prominent than their affectionate character.

• Journal of the Society of Disaster Information
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• v.15 no.4
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• pp.459-468
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• 2019

Purpose: The cavity exploration of the lower part of the road is carried out to prevent ground-sinking. However, the detected communities cannot be identified by the cavity location and history information, such as repackaging the pavement. Therefore, the field applicability of RFID systems was evaluated in this study to enable anyone to accurately identify information. Method: During temporary recovery, tag recognition distance and recognition rate were measured according to underground burial materials and telecommunication tubes using RFID systems with electronic tag chips attached to the bottom of the rubber cap. Result: The perceived distance and perceived rate of depth for each position of the electron tag did not significantly affect the depth up to 15cm, but it did have some effect if the depth was 20cm. In addition, water effects from nearby underground facilities and rainfall are relatively small, and the effects of wind will need to be considered during the weather conditions of the road. Conclusion: The RFID tags for field application of the pavement management system store various information such as location and size of cavity, identification date, cause of occurrence, and surrounding underground facilities to maximize cavity management effect with a system that can be computerized and mobile utilization.