• Journal of Family Resource Management and Policy Review
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• v.6 no.2
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• pp.97-117
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• 2002

This study aimed at identifying and analyzing consumption of leisure services in silver industry and factors that had effects on them. This focused on the consumption of leisure services and its influence on the variables related to change of elderly's attitude, because socio-economic environment structure is improved and average life span is prolonged. The main findings of the research were as follows: 1. Totally, the percentage of leisure services consumption not so high and kinds of leisure were not various. Also, the reason why they use leisure was just for self-development and their indifference to leisure made them not to use services. 2. There were significant differences in individual characteristics and family-environmental conditions relating the consumption of leisure services in the silver industry. 3. Among variables which influence on the consumption of leisure of the elderly, job was the most significant factors. Also average monthly income, the changable inclination in food, clothing and shelter, social support of the family, status of residing, status of health and source of income were influential variables.

• CELLMED
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• v.10 no.3
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• pp.21.1-21.8
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• 2020

Over a span of few decades, the world has seen the emergence of new viruses that have posed serious problems to global health .COVID-19 is a major pathogenic threat to the modern world that primarily shoots the respiratory system of human beings. Wuhan which is the capital city of Hubei, China was the first place in the world where first cases of COVID-19 emerged and the scores of cases significantly increased at an immense rate leading to city isolation and establishment of new specially designed hospitals. SARS-CoV had emerged from bats in china (2002) and MERS-CoV from camels transmitted via bats in Middle East (2012) where the previous versions of COVID-19 took place. Infections with SARS-CoV-2 are now widespread, like Nuclear Chain Reaction (NRC). In this review we will discuss the COVID-19 origin, transmission, incubation, diagnosis and therapies available at the present scenario.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2013.04a
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• pp.830-834
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• 2013

This study presents a method to monitor cable force of a long-span cable-stayed bridge using a smart piezoelectric sensor system. The following approaches are implemented in order to achieve the objective. Firstly, the method to utilize piezoelectric materials for the health monitoring of stay cables is presented. For strain measurement of a stay cable, a PZT-embedded smart skin is designed to overcome the difficulties of bonding PZT sensors directly on stay cables. Secondly, a piezoelectric strain monitoring system for stay cables is designed. For the operation of the sensor board, the Imote2 sensor platform is used to provide the computation, wireless communication and power supply units. The feasibility of the proposed monitoring system is then evaluated on a full-scale cable of a cable-stayed bridge.

• Molecules and Cells
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• v.39 no.2
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• pp.87-95
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• 2016

Sirt1 is the most prominent and extensively studied member of sirtuins, the family of mammalian class III histone deacetylases heavily implicated in health span and longevity. Although primarily a nuclear protein, Sirt1's deacetylation of Peroxisome proliferator-activated receptor Gamma Coactivator-$1{\alpha}$ (PGC-$1{\alpha}$) has been extensively implicated in metabolic control and mitochondrial biogenesis, which was proposed to partially underlie Sirt1's role in caloric restriction and impacts on longevity. The notion of Sirt1's regulation of PGC-$1{\alpha}$ activity and its role in mitochondrial biogenesis has, however, been controversial. Interestingly, Sirt1 also appears to be important for the turnover of defective mitochondria by mitophagy. I discuss here evidences for Sirt1's regulation of mitochondrial biogenesis and turnover, in relation to PGC-$1{\alpha}$ deacetylation and various aspects of cellular physiology and disease.

• Journal of Society of Preventive Korean Medicine
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• v.8 no.1
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• pp.155-161
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• 2004

The average life span is expanded due to the development of modem society, material and cultural life and increasing level of public health. This means that the aging society is rapidly progressing. Geniatric diseases also have increased due to increasing of the aged population. Along with an increase of the aged patient, the anti-aging, prevention of geniatric disease and quality of life is tending high on social concern and medical issues. Many reports showed the evidence to the positive anti-aging effect of Oriental medicine. Qigong therapy, a kind of Oriental medicine, has been used to prevent aging and life prolongation with positive effect for many thousand years. Therefore, qigong practice is popular and common to middle age and old age in China.

• Journal of the Korea institute for structural maintenance and inspection
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• v.16 no.1
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• pp.120-130
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• 2012

As long span and complex bridges are constructed often recently, safety estimation became a big issue. Various types of measuring instruments are installed in case of long span bridge. New wireless technologies for long span bridges such as sending information through a gateway at the field or sending it through cables by signal processing the sensing data are applied these days. However, The case of occurred accidents related to bridge in the world have been reported that serious accidents occur due to lack of real-time proactive, intelligent action based on recognition accidents. To solve this problem in this study, the idea of "communication among things", which is the basic method of RFID/USN technology, is applied to the bridge monitoring system. A sensor node module for USN based intelligent bridge system in which sensor are utilized on the bridge and communicates interactively to prevent accidents when it captures the alert signals and urgent events, sends RF wireless signal to the nearest traffic signal to block the traffic and prevent massive accidents, is designed and tested by performing TinyOS based middleware design and sensor test free Space trans-receiving distance.

• Journal of the Korean Society of School Health
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• v.13 no.2
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• pp.231-240
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• 2000

The purpose of this study is to analyze the relationship between life style and health status of the staffs of an elementary school to understand exercise practices and life styles and to analyze the self-efficacy and the factors that affect it concerning walking exercise. The subjects were m9 staff member of the 10 elementary school in Seoul and materials were collected through an organized examination table from October, 1999 to May 2000. The people health awareness table was used as a variable for life style, the 13 questionnaires made of a 5 points measure was for the self efficacy concerning walking exercise. The data was analyzed through a statistics package made of a Chisquare-test, t-test, ANOVA and a regression analysis. The major results of this study were as follows; 1) 50% of the staffs were practicing regular exercise, 3/4 of them practiced walking, jogging and mountain climbing that don't need equipment and exercise frequency was 1-2 times per week 64%. of the time and exercise span was under 30 minutes in 38%, the highest 2) The average of self-efficacy concerning walking exercise was 3.6 points but the answers "I can walk enough to be in a sweat", "I can walk according to my exercise plan" were relatively low. 3) The explanation degree of the Model was 14% in a regression analysis between self efficacy concerning walking exercise and as a dependent variable for a regular walking exercise plan, regular health examination, routine health status, and breakfast might serve as an explanation degree. According to the results of this study, the suggestions were as follows: 1) The chronic invalid was not enough in the change of life style after chronic disease, most of all, it need the awareness of change, of active health education and of public information for health promotion action practice through the prohibition of smoking, abstinence from drink, exercise and nutritional balance. 2) Concrete practice program enlargement is needed to enhance related walking exercise or of a type lecture meeting for subjects who have a positive attitude about walking exercise plans. 3) A program that can actively recommend a health promotion life style is needed when we make allowance for those who have an ordinarily healthy life style and show a high walking exercise self-efficacy.

• Journal of Sasang Constitutional Medicine
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• v.14 no.2
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• pp.25-34
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• 2002

To understand characteristic of preservation of health in Sasang constitutional medicine, 1 first study preservation of health In ${\ulcorner}$Dongyi Bogam${\lrcorner}$, and then study preservation of health in the ${\ulcorner}$Dongyi Soose Bowon Sasang Chobongyun${\lrcorner}$ particularly Inherent vitality(命脈實數) and Regimen in ordinary life(生息充補之道) which shows early thought of Lee Je-ma. I acquire relation and difference between ${\ulcorner}$Dongyi Bogam${\lrcorner}$ and Dongyi Soose Bowon Sasang Chobongyun${\lrcorner}$, and conclude as follows. 1. In preservation of health ${\ulcorner}$Dongyi Bogam${\lrcorner}$ says Ups and downs of Qi according to degree, tells congenital health and acquired care of health, grades Jin-In, Ji-In, Seong-In, Hyeon-In according to degree of moral culture, and especially emphasizes managing mind which is based on Taoism. 2. In ${\ulcorner}$Dongyi Soose Bowon Sasang Chobongyun${\lrcorner}$ Dongmu divides human being to Sasangin(Taeyangin, Taeumin, Soyangin, Soeumin) according to Large & small of viscera, and regards as determine lift span and rendition of disease & health according to Inherent vitality which is degree of Small viscera. 3. Inherent vitality of Sasangin is supplemented by Regimen in ordinary life. Because Regimen in ordinary life decreases according to age, Dongmu emphasizes managing mind through an autonomic Knowledge Deed to maintain Regimen in ordinary life. 4. In the way of managing mind ${\ulcorner}$Dongyi Bogam${\lrcorner}$ says Taoist moral culture, but Dongmu emphasized control of knowledge and Deed by Confucian moral culture and the mind of control others through confucian self-control.

• Structural Monitoring and Maintenance
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• v.2 no.1
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• pp.77-93
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• 2015

The idea of using measured dynamic characteristics for damage detection is attractive because it allows for a global evaluation of the structural health and condition. However, vibration-based damage detection for complex structures such as long-span cable-supported bridges still remains a challenge. As a suspension or cable-stayed bridge involves in general thousands of structural components, the conventional damage detection methods based on model updating and/or parameter identification might result in ill-conditioning and non-uniqueness in the solution of inverse problems. Alternatively, methods that utilize, to the utmost extent, information from forward problems and avoid direct solution to inverse problems would be more suitable for vibration-based damage detection of long-span cable-supported bridges. The auto-associative neural network (ANN) technique and the probabilistic neural network (PNN) technique, that both eschew inverse problems, have been proposed for identifying and locating damage in suspension and cable-stayed bridges. Without the help of a structural model, ANNs with appropriate configuration can be trained using only the measured modal frequencies from healthy structure under varying environmental conditions, and a new set of modal frequency data acquired from an unknown state of the structure is then fed into the trained ANNs for damage presence identification. With the help of a structural model, PNNs can be configured using the relative changes of modal frequencies before and after damage by assuming damage at different locations, and then the measured modal frequencies from the structure can be presented to locate the damage. However, such formulated ANNs and PNNs may still be incompetent to identify damage occurring at the deck members of a cable-supported bridge because of very low modal sensitivity to the damage. The present study endeavors to enhance the damage identification capability of ANNs and PNNs when being applied for identification of damage incurred at deck members. Effort is first made to construct combined modal parameters which are synthesized from measured modal frequencies and modal shape components to train ANNs for damage alarming. With the purpose of improving identification accuracy, effort is then made to configure PNNs for damage localization by adapting the smoothing parameter in the Bayesian classifier to different values for different pattern classes. The performance of the ANNs with their input being modal frequencies and the combined modal parameters respectively and the PNNs with constant and adaptive smoothing parameters respectively is evaluated through simulation studies of identifying damage inflicted on different deck members of the double-deck suspension Tsing Ma Bridge.

• Journal of radiological science and technology
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• v.13 no.2
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• pp.31-36
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• 1990

We got the following results from the experiment and examination in order to measure the bone-marrow dose of the patients when we did chest or abdomen radiography in the hospitals located in Seoul City from Jan. 1989 until Feb. 1990. 1. In the exposure factors for chest radiography, tube voltage $60{\sim}69\;kVp$ took 48.3%, $80{\sim}89\;or\;90{\sim}99\;kVp$ took 13.8% respectively, $70{\sim}79\;kVp$ 10.3% and $100{\sim}129\;kVp$ 10.3%. In tube current and exposure times, $6{\sim}10\;mAs$ took 41.4%, $16{\sim}20\;mAs$ took 20.7% and $11{\sim}15\;mAs$ 13.8%, measure under 5mAs 10.4% orderly. 2. In chest radiography, the bone-marrow dose came to the minimum 3.48 mrad, to the maximum 35.67 mrad, to the mean 14.46 mrad, to the standard deviation 8.89 mrad. 3. Comparing bone-marrow doses of the patients when we used Bucky technique and non-Bucky technique, that of Bucky technique was very higher than that of non-Bucky technique. Because the result was that Bucky technique had the span of $6.09{\sim}35.67$ mrad, while non-Bucky technique had the span of $3.48{\sim}17.40$ mrad. 4. In the exposure factors for abdomen radiography, tube voltage of $70{\sim}79\;kVp$ was 63.0%, that of $80{\sim}89\;kVp$ was 22.2%, that of $60{\sim}69\;kVp$ was 11.1 %. Tube current and exposure times of $31{\sim}40\;kVp$ was 33.4%, that of $51{\sim}60\;mAs$ was 29.6% and that of $41{\sim}50\;mAs$ was 22.2%. 5. In abdomen radiography, the bone-marrow dose of the patients came to the minimum of 6.96 mrad, to the maximum of 60.90 mrad, to the mean of 35.73mrad, to the standard deviation of 12.65 mrad.