• Journal of the Korean Society of Clothing and Textiles
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• v.31 no.2 s.161
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• pp.292-299
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• 2007

Development of portable device measuring the vital sign continuously with no limit of time and space is absolutely prerequisite for the U-health care that grafts the ubiquitous concept into medical system. Accordingly, it requires to develop a garment style apparatus for measuring vital-sign that is easy to wear on for a long time period. This study suggests a method to improve the insulation of electric cable and the skin adhesion of electrode by integrating the electric conductive material to garment, in order to develop a garment apparatus for measuring ECG for U-health care. Results of the research are as follows; In order to provide the adjacent conductive yarns with insulation, braid with narrow woven end was interlaced using polyester yarn. As a result, the direct contact between electric conductive yarns was restrained, which would be interposed into pin-tuck structured cable. Washable silicone gel applied around the electrode made of electric conductive fabric improved the adhesion, which prevents electrodes from dropping off from the skin surface during body movement. ECG signals on the human subject were tested using the garment apparatus developed by the above method. And the result was that the clear QRS wave formation in the typical form of ECG could be measured in both conditions of still and moving state as well. The result of this study is expected to contribute for the production of U-health care related medical apparatus by accelerating the practical uses of the garment measuring vital sign at a reasonable price.

• Journal of Institute of Control, Robotics and Systems
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• v.21 no.6
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• pp.503-509
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• 2015

In this paper, we designed and tested an ankle joint mechanism for a gait rehabilitation robot. Gait rehabilitation programs are designed to improve the natural leg motion of patients who have lost their walking capabilities by accident or disease. Strengthening the muscles of the lower-limbs and stimulation of the nervous system corresponding to walking helps patients to walk again using gait assistive devices. It is an obvious requirement that the rehabilitation system's motion should be similar to and as natural as the normal gait. However, the system being used for gait rehabilitation does not pay much attention to ankle joints, which play an important role in correct walking as the motion of the ankle should reflect the movement of the center of gravity (COG) of the body. Consequently, we have designed an ankle mechanism that ensures the safety of the patient as well as efficient gait training. Also, even patients with low leg muscle strength are able to operate the ankle joint due to the direct-drive mechanism without a reducer. This safety feature prevents any possible adverse load on the human ankle. The additional degree of freedom for the roll motion achieves a gait pattern which is similar to the normal gait and with a greater degree of comfort.

• Journal of Korean Medical classics
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• v.29 no.4
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• pp.95-103
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• 2016

Objectives : This paper aims to study how 'All articulations are controlled by the gallbladder' as urged by Heoim in Chimgugyeongheombang was reflected in the clinical field, and look into the reason for his assertion. Methods : The paper looked into Chimgugyeongheombang and 1) found examples of how acupoints related to gallbladder were used to treat articulation-related diseases, and 2) investigated the relation between gallbladder and articulations through analyzing the acupoints used for treating articulation-related diseases. These are then compared with Zhenjiuzishengjing to see if the assertions made in 'All articulations are controlled by the gallbladder' were actually applied in clinical fields. Results & Conclusions : Heoim dealt with 20 points out of the 44 acupoints for gallbladder, and used 14 of them for treatments of articulation-related diseases. Gallbladder acupoints were used for ten illnesses, and four of them were related to articulation. Chimgujasaenggyeong showed a difference in that it did not utilize gallbladder acupoints to treat these illnesses. Out of 33 articulation-related illnesses, gallbladder meridians and acupoints were suggested as a means to treat them in 15 cases, and this is an increase in the usage of these points compared to Chimgugyeongheombang. In other words, Heoim actively utilized gallbladder meridian points in treating articulation-related illnesses. The reason Heoim drew a line between gallbladder and articulations is because gallbladder is categorized as a lesser yang pivot and articulations itself functions as a pivot by acting as a pivot for human body movement.

• Journal of Korean Medical classics
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• v.30 no.1
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• pp.145-166
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• 2017

Objectives : The paper aims to study the philosophical background of Huangdineijing by taking into account the fact that its ideas are identical to that of the period between the Warring States and Han. Methods : Through considering the period and the historical backdrop in which Huangdineijing was published, and through considering the book with other texts such as Huangdisijing, the paper draws the common spirit of the time and analyzed the cause and flow of philosophies and ideas that influenced Huangdineijing. Conclusions : 1. Books that upheld Huangdi contained within Hanshu・Yiwenzhi have a common point with the mythical symbol of Huangdi in that they are related to the rule of a nation and the creation of a civilization. Huangdi, who in Huangdineijing bears a need to be understand at this common point of view. 2. The spirit of the period between Warring States and Han can be deduced as "a movement towards unification" and "the development of a civilization infused with spirit of unification." Such spirit of time are reflected in Huangdineijing as Nine Acupuncture(Official Acupuncture) and the establishment of the measuring standards for meridian, bone, and internal organ, and the establishment of the concept of 'Pyungin.' Especially the construction of waterways that connected Huanghe and Yangzijiang river with their tributaries that formed a direct composition of unification was applied to human body in Huangdineijing, thereby establishing the concept of 'Mai'. 3. Unlike Lao Zhuang School of Taoism was not interested in the act of ruling at all, Huangdineijing and its contemporary publication Huangdisijing, present their readers with Number, Law, Rule, Regulation and Governance. Here, the philosophy and the idea which seek "Law" as the methods of ruling the nation by actively participating in the governance of the nation based on the model of natural law and rule appear. Such philosophy and idea is an evidence of the influence of Fajia in accordance with the social and realistic changes witnessed during the time.

• The Journal of Korean Medicine
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• v.24 no.1
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• pp.181-189
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• 2003

Background : Patient, family, society and country are badly damaged by stroke (CVA : cerebrovascular accident). To reduce sequelae and return rapidly to society, treatment in the acute stage is very important. In many studies on purgation therapy (下法) used in acute stages of stroke, the changes of blood pressure, pulse and so on before and after purgation therapy were reported. However, the changes in the human body according to the day elapsed after defecation were not reported, so study was needed to confirm such changes. Methods : Seventy-six patients were studied. We observed forty-three patients at acute stroke and thirty-three patients at convalescent stroke. To confirm the importance of regular defecation in stroke patients, we analyzed blood pressure according to the day elapsed after defecation. Results : The following result were obtained. 1. In stroke group, compared with the day after defecation, the mean blood pressure of the third day after defecation increased. It increased the most in the acute stroke group. 2. Especially in stroke and acute stroke groups, compared with the second day after defecation, the mean systolic blood pressure of the third day after defecation increased significantly. 3. In the infarction group, compared with the day after defecation, the mean blood pressure of the third day after defecation increased. It increased the most in the acute infarction group. 4. Especially, in the infarction and acute infarction groups, compared with the second day after defecation, the mean systolic blood pressure of the third day after defecation increased significantly. Conclusion : In stroke patients, regular defecation is important, so we think that purgation therapy (下法) is needed in stroke patients over the third day elapsed after defecation. We think that the bowel movement control in acute stroke patients is more important than in convalescent stroke patients.

• Journal of the Korean Society for Nondestructive Testing
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• v.34 no.5
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• pp.362-368
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• 2014

Fiber optic sensors (FOS) have advantages such as electromagnetic interference (EMI) immunity, corrosion resistance and multiplexing capability. For these reasons, they are widely used in various condition monitoring systems (CMS). This study investigated a muscular condition monitoring system using fiber optic sensors (FOS). Generally, sensors for monitoring the condition of the human body are based on electro-magnetic devices. However, such an electrical system has several weaknesses, including the potential for electro-magnetic interference and distortion. Fiber Bragg grating (FBG) sensors overcome these weaknesses, along with simplifying the devices and increasing user convenience. To measure the level of muscle contraction and relaxation, which indicates the musle condition, a belt-shaped FBG sensor module that makes it possible to monitor the movement of muscles in the radial and circumferential directions was fabricated in this study. In addition, a uniaxial tensile test was carried out in order to evaluate the applicability of this FBG sensor module. Based on the experimental results, a relationship was observed between the tensile stress and Bragg wavelength of the FBG sensors, which revealed the possibility of fabricating a muscular condition monitoring system based on FBG sensors.

• Journal of Biomedical Engineering Research
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• v.28 no.1
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• pp.117-126
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• 2007

In this paper, we propose an early rehabilitation training system for the improvement of postural balance with multi-modality on a tilting bed. The integration of the visual, somatosensory and vestibular functions is significant to for maintaining the postural control of the human body. However, conventional rehabilitation systems do not provide multi-modality to trainees. We analyzed the characterization of postural control at different tilt angles of an early rehabilitation training system, which consists of a tilting bed, a visual feedback, a computer interface, a computer, and a force plate. The software that we developed for the system consists of the training programs and the analysis programs. To evaluate the characterization of postural control, we conducted the first evaluation before the beginning of the training. In the following four weeks, 12 healthy young and 5 healthy elderly subjects were trained to improve postural control using the training programs with the tilting bed. After four weeks of training, we conducted the second evaluation. The analysis programs assess (center of pressure) COP moving time, COP maintaining time, and mean absolute deviation of the trace before and after training at different tilt angles on the bed. After 4 weeks, the COP moving time was reduced, the COP maintaining time was lengthened, and the mean absolute deviation of the trace was lowered through the repeated use of vertical, horizontal, dynamic circle movement training programs. These results show that this system improves postural balance and could be applied to clinical use as an effective training system.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.63 no.9
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• pp.1286-1293
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• 2014

Typically, studies through the simulation system have been progressed, because the evaluation of the driver's arousal state about the service of a actual train has risk of safety for the driver. When configured event same as the real in simulation system, the ability to cope with an accident situation may be the same each other. But the difference in the state of tension or arousal will occur. In this study, requested to cooperate with the railways in order to escape from these constraints, and the target of the experiment was to real engineer service. I was set about experiment when the train was stopped as safe as possible. As a result, the beta wave of EEG signals that representing complex calculations or anxiety is increased rapidly on the basis of a flag station from at the time of departure. The size of the electrodermal activity signal in response to movement of the body gave a noticeable. In terms of HRV, if the train approach a flag station gradually and the R-R interval is narrowed. So that the driver can be estimated as arousal state. In accordance with this study, if the quantitative standard of arousal state be based on the driver's biosignals will provide, it will be able to take advantage of development the system that would prevent train accidents caused by human error.

• Journal of Nutrition and Health
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• v.35 no.9
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• pp.962-969
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• 2002

This study examined the effect of calcium supplementation and exercise on bone mineral density (BMD) and general characteristics, dietary intake and biochemical measurements for 45 healthy middle-aged women (40-57 years). Subjects were divided in to 4 groups; control group (G1), exercise group (G2), calcium supplementation group (G3), and calcium supplementation with exercise group (G4). The subjects were 45.8$\pm$ 0.66 years old. BMI(kg/$m^2$) was 23.31 $\pm$ 0.63 in Gl group, 22.92 $\pm$ 0.51 in G2 group, 23.64 $\pm$ 0.61 in G3 group, 23.40 $\pm$ 0.37 in G4 group, and BMI of all groups were in normal value. Energy intake was 1332.28㎉/day, 60% of RDA, so that may be unbalance of micronutrients. Especially, calcium intake was 62.8% of RDA that was very low level. Osteocalcine was not statistically significant but calcium supplementation group (G3) be showed increase. BMD was usually decreased by Aging, but in this study was increased in the all group, except control group. It showed increase of BMD for calcium supplementation and/or exercise. Overall results indicate that calcium supplementation and/or exercise increased BMD of middle-aged women, but long-term calcium supplementation and exercise will be able to more effect.(Korean J Nutrition 35(9) : 962~969, 2002)

• Journal of environmental and Sanitary engineering
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• v.8 no.2
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• pp.25-48
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• 1993

International concern over the environmental pollution is ever increasing, and diversified countermeasures must be devised in Korea also. Global trend, damages, problems and countermeasures with respect to issues mentioned in the Rio Declaration, such as prevention of ozone layer destruction, reduction of migratory atmospheric pollution between neighboring countries, and prevention of global greenhouse effect, were discussed in this report. Conclusion of the report is summarized as follows : A. Measurement, Planning and Monitoring (1) Development and implementation of a global network for measurement and monitoring from the global aspects such factors as related to acid rain(Pioneer substances, pH, sulfate, nitrate), effect of global temperature(Air temperature, $CO_2$, $CH_4$, CFC, $N_2O$) and destruction of ozone layer($CFC_S$). (2) Establishment of network system via satellite monitoring movement of regional air mass, damage on the ozone layer and ground temperature distribution. B. Elucidation of Present State (1) Improvement and development of devices for carbon circulation capable of accurately forecasting input and output of carbon. (2) Developmental research on chemical reactions of greenhouse gas in the air. (3) Improvement and development of global circulation model(GCM) C. Impact Assessment Impact assessment on ecosystem, human body, agriculture, floodgate, land use, coastal ecology, industries, etc. D. Preventive Measures and Technology Development (1) Development and consumption of new energy (2) Development of new technology for removal of pioneer substances (3) Development of substitute matter for $CFC_S$ (4) Improvement of agriculture and forestry means to prevent the destruction of ozone layer and the greenhouse effect of the globe (5) Improvement of housing to prevent the destruction of ozone layer and the greenhouse effect of the globe (6) Development of new technology for probing underground water (7) Preservation of forest (8) Biomass 5. Policy Development (1) Development of strategy model (2) Development of long term forecast model (3) Development of penalty charge effect and expense evaluation methods (4) Feasibility study on regulations By establishing the above mentioned measures for environmentally sound and sustainable development to establish the right to live for humankind and to preserve the one and only earth.