• Title/Summary/Keyword: Body Feature

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Estimation of Ground-level PM10 and PM2.5 Concentrations Using Boosting-based Machine Learning from Satellite and Numerical Weather Prediction Data (부스팅 기반 기계학습기법을 이용한 지상 미세먼지 농도 산출)

  • Park, Seohui;Kim, Miae;Im, Jungho
    • Korean Journal of Remote Sensing
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    • v.37 no.2
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    • pp.321-335
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    • 2021
  • Particulate matter (PM10 and PM2.5 with a diameter less than 10 and 2.5 ㎛, respectively) can be absorbed by the human body and adversely affect human health. Although most of the PM monitoring are based on ground-based observations, they are limited to point-based measurement sites, which leads to uncertainty in PM estimation for regions without observation sites. It is possible to overcome their spatial limitation by using satellite data. In this study, we developed machine learning-based retrieval algorithm for ground-level PM10 and PM2.5 concentrations using aerosol parameters from Geostationary Ocean Color Imager (GOCI) satellite and various meteorological parameters from a numerical weather prediction model during January to December of 2019. Gradient Boosted Regression Trees (GBRT) and Light Gradient Boosting Machine (LightGBM) were used to estimate PM concentrations. The model performances were examined for two types of feature sets-all input parameters (Feature set 1) and a subset of input parameters without meteorological and land-cover parameters (Feature set 2). Both models showed higher accuracy (about 10 % higher in R2) by using the Feature set 1 than the Feature set 2. The GBRT model using Feature set 1 was chosen as the final model for further analysis(PM10: R2 = 0.82, nRMSE = 34.9 %, PM2.5: R2 = 0.75, nRMSE = 35.6 %). The spatial distribution of the seasonal and annual-averaged PM concentrations was similar with in-situ observations, except for the northeastern part of China with bright surface reflectance. Their spatial distribution and seasonal changes were well matched with in-situ measurements.

A View on Hyung-Ki in Donguibogam (『동의보감(東醫寶鑑)』의 '형기론(形氣論)'에 대한 소고)

  • Park, Jun Gyu;Cha, Wungseok;Kim, Namil
    • The Journal of Korean Medical History
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    • v.23 no.1
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    • pp.55-65
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    • 2010
  • The narration of "Donguibogam" is focused on humans whilst medical books before it focused on diseases. This is shown from the first subtitle of External Body(身形門) chapter, [The Origin of Hyung-Ki(形氣之始)]. The contents of [The Origin of Hyung-Ki] explains that the human body is composed of 'Hyung(形)' and 'Ki(氣)' This perspective is shown throughout "Donguibogam". First, in the aspect of construction, the viewpoint is shown from the JipRye(集例). It divides the body into inside and outside, which is a result of Hyung-Ki perspective. This continues in the table of contents. Naegyeongpyeon(內景) and Oehyeongpyeon(外形) describes the inside and outside of the body, in other words 'Hyung-Ki'. Japbyeongpyeon(雜病) describes complex illnesses with mixed insides and outsides. Tangaekpyeon(湯液) and Chimgupyeon(鍼灸) can be understood as division of treatment methods into inside and outside. When we look at the contents, the human body is created on the basis of the essence and vital energy of the world. Cheon-Ki becomes the 'Ki' that forms the functions of the body, while Ji-Ki becomes the 'Hyung' that constructs the bodily structure. It is considered that 'Hyung' is composed of SaDae(the body essence, vital energy, mentality and blood), and 'Ki' is composed of OSang(the five Jang organs and six Bu organs). 'Hyung' and 'Ki' show various appearances according to physiology and pathology. 'Hyung' is especially shown by obesity or thinness, 'Ki' by color. The obese may have Ki deficiency, coldness, dampness or phlegm. The thin could have blood deficiency, heat, fire or dryness. The color could show the pathology of the five Jang organs by the five colors, but it can simply be divided into black and white, where black means Eum deficiency, and white means Yang deficiency. It is said that the distinctive feature of traditional Korean medicine is that it is a constitutional medicine. In this perspective, further study on 'Hyung-Ki' is of value. If "Donguibogam" was the foundation of the Sasang Constitutional Medicine(四象醫學), study on 'Hyung-Ki' means searching for the origin of the Sasang Constitutional Medicine. Also, the study on Sasang Constitutional Medicine and Hyungsang medicine(形象醫學) will show the modern image of "Donguibogam". Hence, interchange study between "Donguibogam", Sasang Constitutional Medicine and Hyungsang medicine through the term 'Hyung-Ki' could hopefully lead to academic progression.

A Comparison on the Form in Women's Hanbok between the Later Chosun Dynasty and Modern Times- Applying Delong's Dividing System for Apparel Body Construct (조선 후기와 현대의 여자한복 형태 비교 -Delong의 복식형태 분류체계를 적용하여)

  • 김순영;남윤자
    • Journal of the Korean Society of Costume
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    • v.52 no.5
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    • pp.61-77
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    • 2002
  • The purpose of this study is to investigate difference and likeness on the form in women's Hanbok between the later Chosun Dynasty and modern times based on Belong's observing system for 'Apparel-Body Construct'. Belong's framework is composed 5 pairs of contrast word -'Closed or Open', 'Whole or Par', 'Planar Separation or Planar integration'. 'Flat or Rounded', and 'Determinate or Indeterminate'. Major findings of this study are as follows. First, the form of women's Hanbok in later Chosun Dynasty is 'Variably Closed', 'Part' and 'Rounded', whereas that in modern is 'Open', 'Whole' and 'Flat' Women's Hanbok of modern is lesser convex, and more open than that of later Chosun Dynasty according to increasing use of transparent textiles. Moreover, in comparison with old style, that of modern has the tendency of perceiving primarily whole feature by organic linkage of parts. Because of loose fit of Jeogori and rigid DongJong etc, characteristic of 'Plat' strengthened in modern Hanbok. Secondly, women's Hanbok in the later Chosun Dynasty and modern has common properties of 'Planar Seperation' and 'Determinate'. Women's Hanbok belongs to 'Planar Seperation', because the effect cognized to figure and ground. can be found between small parts and whole of Jegori, or can be found between the head and face. Jeuori and waist band, and Chima and under ware. Further more. it can be classified into 'Determinate'. because it use textiles which have no pattern un it or which show a subtle surface effect by texture changing.

Compensatory Hyperhidrosis after Thoracoscopic Sympathectomy in Essential Hyperhidrosis (본태성 다한증 환자의 수술 후 발생하는 보상성 다한증)

  • Seo, Eui Kyo;Cho, Yong Eun;Yoon, Do Heum;Kim, Young Soo
    • Journal of Korean Neurosurgical Society
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    • v.30 no.4
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    • pp.486-492
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    • 2001
  • Objective : Essential hyperhidrosis is a pathological condition of excessive sweating beyond that required to cool the body, though poorly understood, originating from a dysfunction of the sympathetic nervous system. Thoracoscopic sympathectomy is the most popular treatment for upper limb hyperhidrosis, because it is a safe, effective, minimally invasive, and time-saving method. However, the common complication is the compensatory hyperhidrosis in other areas of the body, notably on the back, chest, abdomen, and buttocks. Compensatory hyperhidrosis is severe enough for some people, especially those living in a warm climate or engaging in heavy physical activities, to regret ever having had operation. The pathophysiological mechanisms underlying compensatory hyperhidrosis are incompletely understood, even though it is thought to be a truly compensatory feature related to thermoregulation of the body. Materials and Methods : we studied the clinical features of total 233 patients who were diagnosed as essential hyperhidrosis and treated with thoracoscopic sympathectomy or sympathicotomy from March 1992 to July 2000. Results : The success rate of thoracoscopic sympathetic surgery(sympathectomy or sympathicotomy) was 98.7%. The global rate of compensatory hyperhidrosis was 77% ; 84% in group T2, 3 sympathectomy, 76% in group T2 sympathectomy, 43% in group T2, 3 sympathicotomy and 59% in group T2 sympathicotomy. The rate of embarrassing or disabling compensatory sweating was significantly higher in T2 sympathectomy and in T2, 3 sympathectomy than in T2 sympathicotomy and T2, 3 sympathicotomy with significancy in statistic analysis(p<0.01). The precipitating factors of compensatory hiperhidrosis, including heat(warm weather), anxiety, stress, and exertion were noted. The compensatory hyperhidrosis was the main cause of patient dissatisfaction after thoracoscopic sympathectomy. Conclusion : The degree of compensatory hyperhidrosis is closely related to the extent of thoracic sympathectomy.

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Human Activity Recognition using View-Invariant Features and Probabilistic Graphical Models (시점 불변인 특징과 확률 그래프 모델을 이용한 인간 행위 인식)

  • Kim, Hyesuk;Kim, Incheol
    • Journal of KIISE
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    • v.41 no.11
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    • pp.927-934
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    • 2014
  • In this paper, we propose an effective method for recognizing daily human activities from a stream of three dimensional body poses, which can be obtained by using Kinect-like RGB-D sensors. The body pose data provided by Kinect SDK or OpenNI may suffer from both the view variance problem and the scale variance problem, since they are represented in the 3D Cartesian coordinate system, the origin of which is located on the center of Kinect. In order to resolve the problem and get the view-invariant and scale-invariant features, we transform the pose data into the spherical coordinate system of which the origin is placed on the center of the subject's hip, and then perform on them the scale normalization using the length of the subject's arm. In order to represent effectively complex internal structures of high-level daily activities, we utilize Hidden state Conditional Random Field (HCRF), which is one of probabilistic graphical models. Through various experiments using two different datasets, KAD-70 and CAD-60, we showed the high performance of our method and the implementation system.

A comparative study on Five Mental(Hun, Shin, Beak, Vi, Zhi) and soul of Confucianism (오신과 유가의 정신개념에 관한 비교 연구)

  • Choi Sung Wook;Kang Jung Soo
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.16 no.4
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    • pp.626-629
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    • 2002
  • In Oriental medicine, Five Mental is a concept for understanding of man's mental structure. Spirit and body is inseparable relation in Oriental Medicine. Function of spirit and body is regarded as one in Oriental Medical physiology. Spirit is the essence of a function which an organism reveal, and it is regarded in the same with life. For this reason, identification spirit with life is special feature of Oriental Medicine. In Confucianism, Li(理) refers to nature's discipline, which everything under the sun shares. It is similar to the concept of Shin(神) in a broad sense and Sung(性) is similar to that of Shin(神) in a narrow sense. Confucianism's principle is similar to Oriental medicine's, in that they classify Sung(性) into Gi-Jil-Ji-Sung(氣質之性) and Bon-Yeon-Ji-Sung(本然之性), that Sung(性) acts upon man differently according to his disposition, and that materials have an effect on Shin(神)'s action. According to mind's action, there are Human mind(人心) and Moral mind(道心). Human mind(人心) is defined as a mental action of higher degree and Moral mind(道心) is conceived as a mental action related to body. It is similar to Oriental medicine's principle in which Shin(神) is classified into Hun(魂) and Beak(魄) according to its action. Yi(意) is self-control and application, and Zhi(志) is a conscious state in which basic acts towards the object are fixed regularly. Those are similar to the concepts of Oriental medicine.

The Study on Health-preserving Method in Child (소아(小兒) 양생론(養生論) 연구(硏究))

  • Kim, Sun-Hyung;Bang, Jung-Kyun
    • Journal of Korean Medical classics
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    • v.22 no.4
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    • pp.101-109
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    • 2009
  • The pediatrics has other diagnosis and treatment compared with an adult. It is therefore, the children have different pathogenesis, pathology from adult's. The special feature of the children is two. Firstly, children are the body of the pure Yang[純陽之體], which means the growth and development of them are very fast. Secondly, they have weak muscle, skeletal and digestive function. So we must consider health-preserving method in different physiology and pathology aspects of the children. The children have weak digestive functions, so they should be careful to avoid eating greasy food and overeating. They must eat the nourishing Eum[滋陰] food. The children should wear thin clothes as possible. If the children wear clothes so thick, it promote the Yang (陽), so the Eum(陰) is hurted. The children are to be lack of Eum[陰不足], so they need to grow and raise the Eum(陰) in this way which the lower body is cool. Sleep is important ways to generate Eum Essence[陰精]. So the children should take a bed as change of the season. Children's muscles and skeleton are growing so incomplete that they are hard to handle Wind-Cold pathogen[風寒邪]. Therefore, the children should be training vital Essence and Gi(氣) with appropriate exercise. We should be careful treatment the Hwayeoljeung(火熱證) with purgation[瀉下] - bitter in taste and cold in nature[苦寒藥], aromatic herb[芳香性藥物], sudorific herb[發汗藥] In addition, child has weak digestive function, so doctor should not use a lot of nourishment[滋補].

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A Study on the Basic Skirt using a 3D Sample Module - For Plus-sized Women - (3D Sample Module을 활용한 스커트 원형 연구 -Plus-size 여성을 중심으로-)

  • Sung, Ok-Jin;Ha, Hee-Jung
    • The Research Journal of the Costume Culture
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    • v.14 no.2
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    • pp.271-285
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    • 2006
  • The purpose of this study was to develop a new basic skirt pattern for 4 lower body types of Plus-sized women. To reduce a time and economic loss about putting it on, This study applied a 3D sample module in the course to develop a basic skirt pattern which is fit, functional and beautiful. A data analysis used the SPSS 11.0 statistics program. To verify the difference, This study used the variance analysis and Duncan's test for the postmortem verification. The result was as follows. To reflect a feature according to an abdomen projection and hip projection, we added the maximum hip circumference to the waist circumference and hip circumference for necessary for a skirt draft item. The front hip circumference sets to the H/4+1cm(ease)+D/4. The back hip circumference set to the H/4+0.5cm(ease)+D/4. The D is the hip circumference in the maximum hip circumference to subtract. The front waist circumference sets to the W/4+0.5cm(ease)+0.5cm(A front and back's difference)+D/4. The back waist circumference sets to the W/4+0.5cm(ease)-0.5cm(A front and back's difference)-D/4. Compare with 4 lower body types of Plus-sized Women, A type 2 and type 4 abdomen projections are bigger. We raised a front waistline of skirt pattern to a 0.3cm upside, and take about 1.3cm down the skirt length from a developed skirt pattern. Consequently, the appearance of a front skirt length was improved with a side skirt length.

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The study on the breast types and characteristics of Chinese female adults. (Ver. 1) - Focused on the female college students in Shanghai -

  • Sohn, Hee-Soon;Cha, Su-Joung
    • Journal of Fashion Business
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    • v.13 no.3
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    • pp.118-135
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    • 2009
  • This study is done in Shanghai area by sample survey of female college students. Through direct contact survey, this study collected and analyzed information on figure to understand feature of breasts and measurements of body to provide base information to improve product of brassiere for adult female in China. Data was analyzed by using SPSSWIN 13.0 Program and SAS 9.0. 1. From a result of analysis on the body measures to understand the characteristics of the shape of the breast of the Chinese female college students(18$\sim$24 years old), the bust circumference was 83.86cm and the underbust circumference was 73.37cm and the cup size of a brassiere was 75A. 2. From a result of analysis on the bust measures to understand the relations between the front, lateral and cross-sectional proportions of the bust and the shape of the breast in the Chinese female college students, the chest height was 0.77, the bust height was 0.71 and the underbust height was 0.68 as the information of the body type that shows the location of the bust that is the measure of an item to a height as the front proportion of the bust. For the lateral proportion of the bust, the chest depth of the waist depth was 0.98, the bust depth, 1.21 and the underbust depth, 1.03. While the bust depth/waist depth is ideal when being 1.3, it was 1.21 in this study to be close to the ideal lateral shape. For the cross-sectional proportion of the bust, the area of the largest evenness was the bust followed by the waist, underbust and chest in order. 3. From a result of analysis on the correlation between measured items necessary to understand the characteristic of the shape of the breast, to set up the sizes and to produce the patterns, the underbust circumference had a relatively high correlation between the items of breadth, depth and circumference and weight as the items of basic areas.

Application of Machine Learning on Voice Signals to Classify Body Mass Index - Based on Korean Adults in the Korean Medicine Data Center (머신러닝 기반 음성분석을 통한 체질량지수 분류 예측 - 한국 성인을 중심으로)

  • Kim, Junho;Park, Ki-Hyun;Kim, Ho-Seok;Lee, Siwoo;Kim, Sang-Hyuk
    • Journal of Sasang Constitutional Medicine
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    • v.33 no.4
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    • pp.1-9
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    • 2021
  • Objectives The purpose of this study was to check whether the classification of the individual's Body Mass Index (BMI) could be predicted by analyzing the voice data constructed at the Korean medicine data center (KDC) using machine learning. Methods In this study, we proposed a convolutional neural network (CNN)-based BMI classification model. The subjects of this study were Korean adults who had completed voice recording and BMI measurement in 2006-2015 among the data established at the Korean Medicine Data Center. Among them, 2,825 data were used for training to build the model, and 566 data were used to assess the performance of the model. As an input feature of CNN, Mel-frequency cepstral coefficient (MFCC) extracted from vowel utterances was used. A model was constructed to predict a total of four groups according to gender and BMI criteria: overweight male, normal male, overweight female, and normal female. Results & Conclusions Performance evaluation was conducted using F1-score and Accuracy. As a result of the prediction for four groups, The average accuracy was 0.6016, and the average F1-score was 0.5922. Although it showed good performance in gender discrimination, it is judged that performance improvement through follow-up studies is necessary for distinguishing BMI within gender. As research on deep learning is active, performance improvement is expected through future research.