• 한국발생생물학회지:발생과생식
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• 제20권1호
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• pp.31-40
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• 2016

This study was conducted in order to examine the egg development in red spotted grouper, Epinephelus akaara and the morphological development of its larvae and juveniles, and to obtain data for taxonomic research. This study was conducted in June 2013, and 50 male and female fish were used for the study. One hundred ${\mu}g/kg$ of LHRHa was injected into the body of the fish for inducing spawning, and the fish were kept in a small-sized fish holder ($2{\times}2{\times}2m$). Eggs were colorless transparent free pelagic eggs, 0.71-0.77 mm large (mean $0.74{\pm}0.02mm$, n=30), and had an oil globule. Hatching started within 27 h after fertilization. Pre-larvae that emerged just after hatching were 2.02-2.17 mm in total length (mean $2.10{\pm}0.11mm$), their mouth and anus were not opened yet, and the whole body was covered with a membrane fin. Post-larvae that emerged 15 days post hatching were 3.88-4.07 mm in total length (mean $3.98{\pm}0.13mm$), and had a ventral fin with two rays and a caudal fin with eight rays. Juveniles that were formed at 55 d post hatching, were 31.9-35.2 mm in total length (mean $33.6{\pm}2.33mm$), with red color deposited over the entire body, and black chromophores deposited in a spotted pattern. The number of fin rays, body color, and shape were the same as that in the adult fish.

• 한국패류학회지
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• 제24권1호
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• pp.1-10
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• 2008

Spermatogenesis and the reproductive cycle in male Spisula sachalinensis were investigated by cytological and histological observations. The morphology of the spermatozoon has a primitive type and is similar to those of other bivalves in that it contains a short midpiece with four mitochondria surrounding the centrioles. But spermatozoon of this species has not axial rod and satellite body in the midpiece. The morphologies of the sperm nucleus type and the acrosome shape of this species have a globe-shape type and modified cap-like shape, respectively. The spermatozoon is approximately $40-45{\mu}m$ in length including the sperm nucleus length (about $1.35{\mu}m$), acrosome length (about $1.50{\mu}m$) and tail flagellum. The axoneme of the sperm tail flagellum consists of nine pairs of microtubules at the periphery and a pair at the center. The axoneme of the sperm tail shows a 9+2 structure. The spawning period of these species lasts from June to July, and the main spawning occurs in July when seawater temperatures are greater than $20^{\circ}C$. The male reproductive cycle of this species can be categorized into five successive stages: early active stage (October to January), late active stage (February to April), ripe stage (April to June), partially spawned stage (June and July), and spent/inactive stage (August to September).

• 한국지반환경공학회 논문집
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• 제16권8호
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• pp.45-49
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• 2015

침투에 대한 안정성 평가 시 댐체의 가장 큰 단면을 반영해 2차원으로 수치해석을 실시하는 것이 일반적이며, 해석결과를 이용한 침투수량 평가 시 댐체 하부지반을 단순한 직사각형 형태로 가정하여 침투수량을 구한 후 단면형상을 반영해 최종 침투수량을 계산하고 있다. 하지만 최근 기술의 발달로 댐 시공 시 다양한 형태의 지반 위에 다양한 형태의 댐들이 축조되고 있는 점을 감안하면 3차원 수치해석을 통해 댐체의 형상 및 지형조건을 보다 정확하게 반영한 결과를 이용하여 결론을 도출하는 것이 바람직하다고 판단된다. 따라서 본 연구에서는 3차원 FEM 수치해석법을 이용하여 강우량을 포함한 다른 기타요인은 배제한 후 댐체로만 통과되는 침투수량 평가를 통해 안전관리를 할 수 있는 방안을 제시하고자 한다.

• 한국보건간호학회지
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• 제28권2호
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• pp.310-319
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• 2014

Purpose: The purpose of this study is to examine the effects of a resistance band training program on body composition, physical fitness, and health promotion behavior in nursing students. Method: This study has a one-group pretest-posttest design to examine the change in body composition, physical fitness, and health-promoting lifestyle profile after participation in the resistance band training program. Training consisted of hands-based exercises using an elastic resistance band for ten weeks. Participants performed the resistance band training two days per week with a sports trainer, and 30 minutes self-training three days per week. The participants were 21 freshmen in nursing. Results: Mean age of the participants was 20.9 years, and 61.9% were not satisfied with their body shape. After the training program, muscle mass, muscular endurance, and balance of the body were significantly improved. In health promoting lifestyle profile, categories of physical activity, health responsibility, and stress management showed a significant increase. Conclusion: Results of this study suggested that exercising with a resistance band improved body composition, physical fitness, and health promoting behavior in the nursing students. We propose that resistance band training should be suitable for those who have the environment with limitation of time and space.

• 대한인간공학회지
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• 제28권4호
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• pp.117-124
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• 2009

To inspect the quality of data collected from a large-scale body measurement and investigation project, it is necessary to establish a proper data editing process. The three-dimensional body measurement may have measuring errors caused from measurer's proficiency or changes in the subject's posture. And it may also have errors caused in the process of algorithm expressing the information obtained from the three-dimensional scanner into numerical values, and in the course of data-processing dealing with numerous data for individuals. When those errors are found, the quality of the measured data is deteriorated, and they consequently reduce the quality of statistics which was conducted on the basis of it. Therefore this study intends to suggest a new way to improve the quality of the data collected from the three-dimensional body measurement by proposing a working procedure identifying data errors and correcting them from the whole data processing procedure-collecting, processing, and analyzing- of the 2004 Size Korea Three-dimensional Body Measurement Project. This study was carried out into three stages: Firstly, we detected erroneous data by examining of logical relations among variables under each edit rule. Secondly, we detected suspicious data through independent examination of individual variable value by sex and age. Finally, we examined scatter-plot matrix of many variables to consider the relationships among them. This simple graphical tool helps us to find out whether some suspicious data exist in the data set or not. As a result of this study, we detected some erroneous data included in the raw data. We figured out that the main errors are not because of the system errors that the three-dimensional body measurement system has but because of the subject's original three-dimensional shape data. Therefore by correcting some erroneous data, we have enhanced data quality.

• 한국의류산업학회지
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• 제11권3호
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• pp.437-444
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• 2009

According to the activation of the fashion electronic commerce, this research investigated the merits and demerits and improvement plan of the 3D virtual try-on technology using the qualitative research method. This research was performed by interview with 70 evaluation group. The evaluation group of 3D virtual try-on was organized and the fit evaluation process by 3D human body scan and the 3D virtual try-on of the i-Fashion technology center were experienced. This study was performed by interview after the actual and virtual try-on about the casual shirt. The convenience and accuracy of measurement, usability in online shopping, body evaluation, complement of sizing system, and body shape management were discovered as merits. The requirement of high accuracy in sizing and avatar, limits of fabric expression, practical limitation by cost, vexatious of measurement garment, differences between real and virtual fittings, personal information leakage risk, and etc were pointed out as demerits. The mass customization, customized garment connected with medical service, humanized avatar, improved fitting report, entertainment, coordination, wardrobe manager were proposed as improvement plan.

• 수산해양기술연구
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• 제48권4호
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• pp.487-494
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• 2012

Acoustical backscattering characteristics of Japanese anchovy can be estimated by Kirchhoffray mode model (KRM model) due to estimate exact body and swim-bladder shape of the fish, the samples were rapidly frozen by dry-ice and alcohol. X-ray photos for ventral and lateral direction for 6 samples were taken and the 3D coordinates of the body swim-bladder were estimated by digitizing from the photos. The angles between the axis of body and swim-bladder were about $9^{\circ}$ at 38kHz and $7^{\circ}$ at 120kHz, 200kHz. General formula of TS and BL estimated were < $TS_{38kHz}$ >=20logBL-67.3, < $TS_{120kHz}$ >=20logBL-66.6, < $TS_{200kHz}$ >=20logBL-67.0. As a result, we confirmed KRM model is very useful to estimate TS (Target Strength) for design of experiment and it also can be applied to estimate the abundance of Japanese anchovy distributed by 2 frequency difference method in the survey area.

• 산업융합연구
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• 제20권12호
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• pp.213-217
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• 2022

본 연구의 목적은 한국인 대상의 국민건강영양조사(2018년) 자료 중 30세 이상의 인구를 대상으로 나이, 신체활동 (걷기, 근력운동), 주관적 체형 인식, 체중의 변화가 주관적 건강 상태와의 관계를 알아보고자 하였다. 본 연구의 대상과 연구방법은 제7기 3차년도 국민건강영양조사 (2018년)를 이용한 이차분석연구이다. 나이, 1주일간 걷기 일수, 1주일간 근력운동 일수, 주관적 건강 상태, 주관적 체형 인식, 그리고 1년 동안 체중 변화 유무를 변수로 이용하여 주관적 건강 상태와의 상관성 분석을 SPSS를 활용하여 통계적 유의성 있는 결과를 활용하였다(p<.01). 7일(매일) 걷기를 한다는 응답율은 30-45세는 21.9%, 50-64세는 27.2% 그리고 65세 이상은 26.6%이며, 5일 근력운동을 한다는 응답율은 30-45세는 3.6%, 50-64세는 8.4% 그리고 65세 이상은 7.9%이다(p<.001). 주관적 건강 상태는 나이 (.091), 1주일간 걷기일수(.739), 1주일간 근력운동 일수 (.530), 주관적 체형인지(.256), 1년간 체중 변화(.303)에 대해서는 양의 상관관계가 있었다(p<.01). 본 연구에서는 주관적 건강 상태는 '나쁨'이라고 응답한 연령대는 65세 이상이 21.4%로 가장 높았으며, 그 다음으로는 50-64세는 15.7%, 30-45세는 11.0% 순으로 나타났다. 이는 걷기, 근력운동을 함으로써 주관적 건강 상태가 좋아질 것으로 기대할 수 있었다. 이러한 결과를 토대로 연령에 따른 개인의 주관적 건강 상태 향상을 위한 건강 관련 프로그램을 마련하는데 기초자료로 제공하고자 한다.

• 대한가정학회지
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• 제48권4호
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• pp.43-55
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• 2010

With the sex role changes in the post-modern society, men are becoming increasingly interested in appearance and their bodies. Male muscles in particular, which also is a visual manifestation of masculine strengths, has become the focal interest for those men who care about appearance management. The purpose of this study was to identify the extent to which Korean culture emphasizes muscles in defining masculine body, and to understand Korean men's perception of muscle building and their bodies. For this purpose, a content analysis and a survey were conducted. The content analysis aimed at identifying the ideal masculine image represented in the ads featured in male fashion magazines. For the purpose of comparison, U.S. magazines were also examined. The result showed that male models' images shown in Korean magazines were not significantly different from the male images in American magazines in terms of the body size, muscularity, and the nudity of the models. A survey to 339 men aged between 20 to 50 living in Seoul area was conducted to explore the motives of muscle building, the criteria men use to evaluate muscled bodies, and the influence of muscle building on body satisfaction. Factor analysis and analyses of variances followed by Scheffe multiple comparisons were conducted for data analysis. The results showed that physical appearance improvement is one of the motives of muscle building especially for younger men. Muscle building in general is found to contribute positively to men's body satisfaction.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2021년도 추계학술대회
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• pp.329-331
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• 2021

최근 헬스케어 분야에서 딥러닝을 활용한 다양한 사례가 증가하면서 웨어러블 기기를 통한 심전도 검사, 체성분 분석 등의 기능을 제공하여 합리적인 의사 결정을 제공하여 개인에게 맞는 프로세스를 제공할 수 있다. 딥러닝을 활용하기 위해서는 정제된 데이터 확보가 무엇보다 중요하며 이러한 데이터는 사람의 개입이나 비지도학습 등을 통해 이뤄지고 있다. 본 논문에서는 측정하기 쉬운 가슴둘레, 허리둘레와 같은 치수 데이터를 이용해 성별과 나이에 따른 군집별 비지도학습을 진행하고 이를 CNN으로 분류하는 모델을 제안한다. 데이터는 국가기술표준원에서 제공하고 있는 제7차 인체치수데이터를 활용하였다. 이를 통해 개인 맞춤형 체형관리 서비스나 비만 분석 등 다양한 응용 사례에 적용할 수 있을 것으로 사료된다.