• Title/Summary/Keyword: center of human body

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Wearable Human Health-monitoring Band using Inkjet-printed Flexible Temperature Sensor

  • Han, Dong Cheul;Shin, Han Jae;Yeom, Se Hyeok;Lee, Wanghoon
    • Journal of Sensor Science and Technology
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    • v.26 no.5
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    • pp.301-305
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    • 2017
  • This paper presents a wearable human health-monitoring band. The band consists of a body temperature detector (BTD) and a hear rate detector (HRD). The BTD and HRD are realized using an inkjet-printed flexible temperature sensor and a commercial heart rate sensor module, respectively. The sensitivity of the fabricated BTD was found to be $-31/^{\circ}C$ with a linearity of 99.82%. The HRD using the commercial heart rate sensor module has a good performance with a standard deviation of 0.85 between the data of a commercial smart watch and the fabricated HRD.

Propagation Characteristics from Ingested Sources in Human Body (인체 내부 소스에 의한 전파 특성)

  • Kim Bo-Mi;Kim Young-Sik;Kim Se-Yun
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.17 no.3 s.106
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    • pp.259-266
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    • 2006
  • This paper presents the propagation characteristics from ingested sources in human body using the human model simulator. The simulator applies the FDTD method to the human data consisting of the human CAD and tissue data. After the accuracy of the simulator is verified, the received fields at one horizontal layer including the small intestine among the digestive organs are calculated in case that the electric field source is implanted in the center of the small intestine. The human propagation characteristics are illustrated by calculating the path loss per unit length according to various received positions from the simulated results.

Measurement of Human Behavior and Identification of Activity Modes by Wearable Sensors

  • Kanasugi, Hiroshi;Konishi, Yusuke;Shibasaki, Ryosuke
    • Proceedings of the KSRS Conference
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    • 2003.11a
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    • pp.1046-1048
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    • 2003
  • Recently, various researches in respect of the positioning technologies using satellites and the other sensors have made location-based services (LBS) more common and accurate. Consequently, concern about position information has been increasing. However, since these positioning systems only focus on user's position, it is difficult to know the user's attitude or detailed behaviors at the specific position. It is worthy to study on how to acquire such human attitude or behavior, because those information is useful to know the context of the user. In this paper, the sensor unit consisting of three dimensional accelerometer was attached to human body, and autonomously measured the perpendicular acceleration of ordinary human behaviors including activity modes such as walking, running, and transportation mode using transportation such as a train, a bus, and an elevator. Subsequently, using the classified measurement results, the method to identify the human activity modes was proposed.

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Development of Simple Articulated Human Models using Superquadrics for Dynamic Analysis

  • Lee, Hyun-Min;Kim, Jay-Jung;Chae, Je-Wook
    • Journal of the Ergonomics Society of Korea
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    • v.30 no.6
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    • pp.715-725
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    • 2011
  • Objective: This study is aimed at developing Articulated Human Models(AHM) using superquadrics to improve the geometric accuracy of the body shape. Background: The previous work presents the AHM with geometrical simplification such as ellipsoids to improve analysis efficiency. However, because of the simplicity, their physical properties such as a center of mass and moment of inertia are computed with errors compared to their actual values. Method: This paper introduces a three steps method to present the AHM with superquadrics. First, a 3D whole body scan data are divided into 17 body segments according to body joints. Second, superquadric fitting is employed to minimize the Euclidean distance between body segments and superquadrics. Finally, Fee-Form Deformation is used to improve accuracy over superquadric fitting. Results: Our computational experiment shows that the superquadric models give better accuracy of dynamic analysis than that of ellipsoid ones. Conclusion: We generate the AHM composed of 17 superquadrics and 16 joints using superquadric fitting. Application: The AHM using superquadrics can be used as the base model for dynamics and ergonomics applications with better accuracy because it presents the human motion effectively.

Analysis of Clothing Pressure of Commercial Body Shapers using 3D Printed Torso Dummy for Middle-aged Women (중년 여성용 3D 프린팅 토르소 더미를 사용한 시판 바디쉐이퍼 제품의 의복압 분석)

  • Do, Wolhee;Lee, Jeongeun
    • Fashion & Textile Research Journal
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    • v.23 no.6
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    • pp.810-825
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    • 2021
  • This study measured and analyzed clothing pressure at each measurement part of commercial body shapers to provide basic information for product design and clothing pressure standard and level. This study used five body shaper. Clothing pressure measurements were taken at 18points: Anterior area 8points, lateral area 5points, posterior area 5points. The findings of this study were as follows. As a result of measuring the clothing pressure, the body shaper 1 showed the highest pressure, and body shaper 5 showed the lowest pressure at almost of the measurement points of the three body types. In some cases, body shapers 2, 3, and 4 showed different orders of pressure depending on the measurement point. The highest measured values in most body shapers were the P1 shoulder area and the P2 bust area. The lowest measurement area differed by body type, but mainly P3 underbust area, P4 thorax area and P9 axillary area, P11 waist lateral area, P13 hip lateral area. These body shapers showed different results depending on the the manufacturers and body type of middle-aged women, and because there was no standard for the pressure value. Therefore, it is necessary to design a body shaper sizing system after accurately setting the clothing pressure value for each body part of the consumer.

Application Two-Dimensional Pattern Development of Cycling Tights based on the Three-Dimensional Body Scan Data of High School Male Cyclist

  • Park, Hyunjeong;Do, Wolhee
    • Fashion & Textile Research Journal
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    • v.22 no.5
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    • pp.595-606
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    • 2020
  • This study develops an optimal two-dimensional (2D) pattern from three-dimensional human scan data by considering the cycling posture and dermatome of high school male cyclists. By analyzing the body surface change in the cycling posture and considering the dermatome of the lower limbs, the optimal cutting line setting and the development of cycling tights for individual cyclists were presented to provide data that could be used in the clothing industry. We designed three cycling tights to solve the size unsuitability. 3D design 1 is a non-extension design based on the analysis of the 3D human body scan data, in which parts were connected diagonally from the front of the knee to the back of the knee. 3D design 2 removed both the front and back to reduce air resistance during cycling. 3D design 3 did not have a cutting line on the front panel because of the air resistance during cycling in the front area. We analyzed the garment pressure for 8 points of lower body and performed a subjective evaluation of the 3D designed tights and the current cycling tights. The 3D design 1 in this study was well received in the omphalion, thigh, and hip area, while 3D design 3 was well received in the omphalion, thigh, hip, and bottom bands. Therefore, the LoNE of 3D design 1 was applied to the front, and the hip cutting line of 3D design 3 was applied to the back.

Acute Toxicity Study of Recombinant Human Interferon ${\alpha}A$ (LBD-007) in ICR Mice

  • Kim, Hyoung-Chin;Song, Si-Whan;Cha, Shin-Woo;Shin, Chun-Chul;Ha, Chang-Su;Han, Sang-Seop
    • Biomolecules & Therapeutics
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    • v.1 no.2
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    • pp.266-269
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    • 1993
  • The acute toxicity of a recombinant human interferon $\alpha$A (code name: LBD-007) was evaluated in both sexes of ICR mice, 5 weeks old, by the oral, subcutaneous and intravenous routes of administration. Based on the results, LBD-007 was not considered to induce any toxic effect on the mice in mortalities, clinical findigs, body weights and gross findings. It is suggested that LD$_{50}$ values in mice would be $>48{\times}10^8$ IU/kg in the oral, subcutaneous or intravenous routes.s.

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Ijema(李濟馬)'s Philosophy of Four Constitution and Paradigm of Life World[Body-Community] (이제마의 사상철학(四象哲學)과 생활세계[몸-공동체] 패러다임)

  • Jeong, Bok-Cheol
    • Journal of Korean Medical classics
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    • v.21 no.4
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    • pp.207-224
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    • 2008
  • This study attempts to illuminate Ijema's philosophy of Four-Constitution as a new political theory of human beings as it has been regarded as the philosophy of Body-Politics and Life World[Body-Community], the notion of which was formulated quite uniquely according to the doctrine of Post-Juhi(朱子) in Joseon(朝鮮) dynasty. The philosophy of Four-Constitution was the result of succession of and reflection upon a long tradition; since the crisis aroused of Confucianism as a pragmatic science and a pure theory of science, after having collided with the science of the west, Ijema as a Confucian scholar and a oriental medicine struck upon and opened a new way to a discursive solution, the philosophy of Four-Constitution as Body Politics and Life World of New Paradigm by reconsidering the fundamental spirit and ideology of the doctrine of confucian tradition.

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Biomechanical Gait Analysis and Simulation on the Normal, Cavus and Flat Foot with Orthotics (Orthotics 착용에 따른 정상, 요족, 평발의 생체역학적 보행분석 및 시뮬레이션)

  • Lee, Jung-Hyun;Lee, Jae-Ok;Park, Soung-Ha;Lee, Young-Shin
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.31 no.11
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    • pp.1115-1123
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    • 2007
  • The foot plays an important role in supporting the body and keeping body balance. An abnormal walking habit breaks the balance of the human body as well as the function of the foot. The foot orthotics which is designed to consider biomechanics effectively distributes the load of the human body on the sole of the foot. In this paper, gait analysis was performed for three male subjects wearing the orthotics. In this study, three male subjects were selected. The experimental apparatus consists of a plantar pressure analysis system and digital EMG system. The gait characteristics are simulated by ADAMS/LifeMOD. The COP (Center of Pressure), EMG and ground reaction force were investigated. As a result of gait analysis, the path of COP was improved and muscle activities were decreased with orthotics on the abnormal walking subjects.

Veterinary management protocol for non-human primates: quarantine, anesthesia, and postoperative care for mastoidectomy at animal research institutions

  • Yoon Beom Lee;Woori Jo;Eui-Suk Jeong;Tae Ku Kang;Gwang-Hoon Lee
    • Korean Journal of Veterinary Research
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    • v.63 no.4
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    • pp.35.1-35.10
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    • 2023
  • Non-human primate (NHP) research faces challenges due to zoonosis risk and complex veterinary management yet lacks standardized guidelines for animal care. Therefore, we developed an advanced veterinary management protocol for NHP quarantine, anesthesia, and postoperative care. Three female 4 to 5-year-old cynomolgus monkeys were anesthetized and underwent various tests, including body weight, temperature, blood tests, urinalysis, microbiological monitoring, and physical and dental examinations. Ivermectin and medicated baths were administered to eradicate ectoparasites and endoparasites, and testing was repeated 30 days later. Following quarantine, we performed computed tomography and anesthesia maintenance for mastoidectomy. To relieve pain and maintain body weight, we administered tramadol intramuscularly 4 times/day for 3 days and meloxicam subcutaneously twice daily for 14 days. Feed replacements were provided. During the 33-day quarantine period, physical examinations revealed no abnormalities indicative of infectious diseases, and no specific clinical symptoms were observed. Through a preliminary test of anesthesia time, we selected ketamine 4 mg/kg + medetomidine 50 ㎍/kg for short experiments such as computed tomography, and ketamine 8 mg/kg + medetomidine 50 ㎍/kg for intubation. Ten days after mastoidectomy, NHPs consumed 100 kcal/kg and recovered their body weight. This study offers advanced veterinary management guideline for NHP research. Such protocols can lead to more standardized and ethical practices in NHP research, thereby enhancing the quality of studies on NHPs and the translation of findings to human health and disease.