• The Korean Journal of Rehabilitation Nursing
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• v.6 no.2
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• pp.248-256
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• 2003

Purpose: This research was for checking the effect of meridian massage on the reduction of pain and subjective symptoms of myofascial pain syndrome. Method: The method of the research was interruptive time series design. The research objects are 25 hospital workers with myofascial pain syndrome at B hospital in Busan from July 22, 2002 to August 18, 2002. SPSS Win 10.0 was used for data analysis, paired t-test and repeated measures ANOVA for hypothesis test. Result: The recipients of meridian massage felt less pain than before(F=12.587, p=.000). The recipients of meridian massage felt less often than before (F=6.705, p=.001). The recipients of meridian massage got lower score on subjective symptoms of myofascial pain than before(F=12.857, p=.000). The recipients of meridian massage had lower blood pressure than before(systolic blood pressure; t=4.697, p=.000, diastolic blood pressure; t=3.426, p=.002). The recipients of meridian massage did not get the lower number of pulse than before(t=0.33, p=.744). Conclusion: The above results show that meridian massage is effective on the reduction of pain and subjective symptoms of myofascial pain syndrome and makes stable the blood pressure. Therefore meridian massage can be apply as the effective intervention for the reduction of pain and subjective symptoms of myofascial pain syndrome.

• Journal of the Korean Society of Safety
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• v.28 no.3
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• pp.33-38
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• 2013

Many occupational workers or professionals have to walk on the various floors for a long period of time. The objective of this study was to develop the safety shoes with increased traction through the material selection. In order to fulfill our objective, first, two kinds of filler were selected to compare the wear mechanism at outsole surface. The developed rubber materials were tested with two kinds of portable slip meters. The sample safety shoes with developed rubber materials were also tested with subject in the laboratory. During walking, the safety shoes were naturally abraded with counter surface. The coefficient of friction(COF) was gradually decreased with number of steps to 30,000, while the COF was abruptly increased from 30,000 to 40,000. The experimental results showed that COF tested with silica rubber was at least 10% higher than that with carbon black rubber in wet or detergent condition. It has been well recognized that filler properties play a important role in wet traction in the tire industry. However it has been unclear that filler properties would be decisive factor in safety shoes. Our study shows that silica exhibits a higher slip resistance than carbon black without reference to wear states in wet or detergent condition. So, this results will provide guides for outsole compounders to develop new products and improve product performance.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.22 no.3
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• pp.184-190
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• 2012

Objectives: This study aimed to characterize the nanoparticles produced by welding and grinding processes. Methods: The number concentrations of particles were mapped to determine the distribution of welding fumes in a workplace atmosphere using a hand-held condensation particle counter. An electrical low-pressure impactor was used for measuring the number concentration and particle size distribution. Results: High number concentrations were found around arc cutting and welding (grinding) processes. In the worker's breathing zone, the mean number concentration was 655,000 particles/cm3 and the count median diameter (CMD) was 84 nm with several multi peak distributions (~20, 70, 300 nm). However, at a distance of 3 m from the welding position, the number concentration decreased to 153,000 particles/cm3 with a 70 nm single peak size distribution. During a grinding process, peaks with high concentrations of nanoparticles were temporarily observed. The mean number concentration was 1,520,000 particles/cm3, and the CMD was 30 nm. Nanoparticles (<100 nm) made up 58% and 92% of the aerosols produced by welding and grinding processes, respectively.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.10 no.2
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• pp.119-126
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• 2016

This study aimed to analyze the effects of psychological-social factors, economic factors and Health-related factors of industrially injured workers on life satisfaction. For this study, the data of the 2014 1st Korea Panel Study of work's compensation Insurance. From all the subjects study, 2000 industrially injured workers who were fit for the study purpose were chosen and analysis were implemented. Self efficacy, self esteem, old age preparations of psychological-social factors influenced on life satisfaction. Economic activity, socioeconomic status of economic factors influenced on life satisfaction. Subjective health status, with the help of others of Health-related factors influenced on life satisfaction. The model explained 34% of the valuables.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.14 no.2
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• pp.654-670
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• 2020

Workers at construction sites are easily exposed to many dangers and accidents involving falls, tripping, and missteps on stairs. However, researches on construction site monitoring system to prevent work-related injuries are still insufficient. The purpose of this study was to develop a wearable textile pressure insole sensor and examine its effectiveness in managing the real-time safety of construction workers. The sensor was designed based on the principles of parallel capacitance measurement using conductive textile and the monitoring system was developed by C# language. Three separate experiments were carried out for performance evaluation of the proposed sensor: (1) varying the distance between two capacitance plates to examine changes in capacitance charges, (2) repeatedly applying 1 N of pressure for 5,000 times to evaluate consistency, and (3) gradually increasing force by 1 N (from 1 N to 46 N) to test the linearity of the sensor value. Five subjects participated in our pilot test, which examined whether ascending and descending the stairs can be distinguished by our sensor and by weka assessment tool using k-NN algorithm. The 10-fold cross-validation method was used for analysis and the results of accuracy in identifying stair ascending and descending were 87.2% and 90.9%, respectively. By applying our sensor, the type of activity, weight-shifting patterns for balance control, and plantar pressure distribution for postural changes of the construction workers can be detected. The results of this study can be the basis for future sensor-based monitoring device development studies and fall prediction researches for construction workers.

• Journal of Preventive Medicine and Public Health
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• v.20 no.2 s.22
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• pp.205-214
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• 1987

For the purpose of evaluating the effect of noise induced hearing loss on the blood pressure, a cross-sectional study was conducted in 481 manufacturing industrial workers in Pusan area consisted of 275 workers from noisier plant (over 90 dB(A), high exposed group) and 206 workers from less noisy plant (below 85 dB(A), low exposed group) from April to Decepmber in 1985. The summarized results were as follows; 1) The degree of hearing loss according to the audible frequency was most notable in 4,000 Hz. 2) The prevalence of hypertension was 14.8% in total examined subjects. And also in 40 dB(A) hearing lost workers, there was no significant difference between high exposed group as 15.5% and low exposed group as 15.8%. 3) In 3 models analyzed by multiple regression technique to obtain the complexed extents of risk factors related to the diastolic blood pressure, especially model III which contain age, body mass index, smoking, alcohol and family history of hypertension, duration of work, noise exposure level and degree of hearing loss in high exposed group was most remarkable compared to the others. 4) The most potential predictor related to the diastolic pressure in high exposed group was the degree of hearing loss. And the next were body mass index, familial history of hypertension and age in order. But in the case of low exposed group, the potential predictors were body mass index, age and familial history of hypertension.

• Journal of the Korea Safety Management & Science
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• v.16 no.4
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• pp.451-459
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• 2014

To solve the serious problem of insufficient manpower in medium and small scaled companies, our country allows introduction of foreign manpower for 5 business types such as manufacture industry, service industry, etc. and there are 226,825 people who entered by employment license system(E-9) in Sep. 2013. However, according to the results of investigation "actual status and difficulties of foreign manpower's employment of medium and small scaled manufacturing companies" of KFTA in 2013, 36.4% of respondents responded that current scale of introducing foreign manpower is insufficient to solve difficulties of insufficient manpower in industrial world and 37.7% of them responded that the quarter of new employment is insufficient. So, they hope that current quarter system of foreign manpower can be abolished. Meanwhile, introduction scale of foreign manpower was decided by 53,000 people so as to solve enterprise difficulties in manpower and vitalize economics this year, but illegal aliens are 39,623, more than 17.5%, in Sep. 2013 after employment expiration. Therefore, it becomes serious social problem. Government displays various support businesses so that foreign workers after employment expiration can return to their homeland legally. This thesis intends to find measures to maintain royalty for our country and support their smooth resettlement through the analysis on homecoming support business of foreign workers.

• Journal of the East Asian Society of Dietary Life
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• v.24 no.5
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• pp.604-613
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• 2014

This study was carried out to investigate consumption patterns of health functional foods (HFF) and analyze their related factors in male workers in order to provide basic data for appropriate understanding and optimal use of HFF. The subjects were 325 shipbuilding workers aged 20~50 in the Geoje area. About 84% of subjects reported that they were currently consuming or had experience of consuming HFF. The most commonly used type of HFF was vitamins (53.5%), followed by red ginseng (28.9%) and vegetable extract (15.4%). The major reasons for consuming and not-consuming HFF were 'to recovery from fatigue' (49.5%) and 'can not trust the effects' (39.4%), respectively. The intake period was 'less than 3 months' (35.5%), average monthly expense was 'less than 50,000 won' (49.1%), and purchase place was 'store of health functional foods' (32.2%) as the most common answers. The effects after consuming HFF were 'moderate' (51.3%) as the most common answer, and 16.1% of subjects experienced side effects, such as diarrhea, indigestion and nausea. Contributing factors for selecting and desire for future use of HFF were 'effectiveness' (52.2%) and 'when necessary' (67.8%) as the most common answers. Experience of using HFF was positively correlated with age (p<0.05), marital status (p<0.05), unbalanced diet (p<0.01), concern about health (p<0.05), and fear for disease (p<0.05). Purchase of HFF was positively correlated with fear of disease (p<0.01), whereas it was negatively correlated with frequency of exercise (p<0.05). The desire for future use of HFF was positively correlated with concern about health (p<0.05), fear of disease (p<0.01) and drinking (p<0.05). In conclusion, factors affecting consumption patterns of health functional foods (HFF) were age, marital status, unbalanced diet, concern about health, fear of disease and drinking.

• Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
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• v.8 no.10
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• pp.883-893
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• 2018

The inflow of Labor Migrants has been grown up to 600,000 people until now with the adoption of Employment Permit System (EPS) in 2004 until now. However the institutional support lack to ensure their rights and improve their conditions. This is because of their consideration ad temporary labors in South Korean society and labor forces rather than the objects of integration. As a result, the legal status and rights of migrant workers are criticized for their utilization rather than human rights, and human rights protection is insufficient. To this context, this paper analyzed the 19th presidential election pledge of the four political parties (Democratic Party, the Liberty Korea Party, Bareun Party and Justice Party) the majority of the Korean National Assembly, and predicted how the policies of migrant workers would evolve. The study found that there were two political parties that did not mention policies for migrant workers, and the remaining two parties also maintained their current policies. This is probably the biggest reason to recognize migrant workers as temporary residents. However, they should also be aware of the fact, that migrant workers are the members of the Korean society and are the owners of human rights that should be guaranteed, and should consider the policy directions to live with them.

• Journal of Preventive Medicine and Public Health
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• v.10 no.1
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• pp.142-149
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• 1977

To use basic data for health planning and evaluation of Kangwha community health project of Yonsei University, a study on death rates and causes of death were investigated in two townships (Naega and Sunwon Myuns) in Kangwha County from April 1, 1975 to March 31, 1977 All death was identified and reported by family health workers who are living in each village and 2 trained public health nurses confirmed the death. The causes of death were investigated by 2 public physicians. Total number of deaths for 2 years was 230 and the followings are brief summary of the study. 1. Age-adjusted crude death rates of study area were 8.69 per 1,000 population in 1975 and 7.18 per 1,000 population in 1976. Age-adjusted crude death rates for male were 9.18 in 1975 and 6.38 in 1976 and for female were 8.33 and 7.80 per 1,000 population 2. Age specific death rate curves by year and sex showed 'U' shapes. 3. Infant and neonatal death rates were 30.08 and 22.56 per 1,000 live births in 1975, and the rates in 1976 were 18.18 and 13.64. 4. The most common cause of death was cerebrovascular disease and average cause specific death rate for the disease was 215.5 per 100,000 population. 5. Four leading causes of death were non-infectious origin; cerebrovascular disease, malignant neoplasms, senility and suicide. Pulmonary tubeculosis and pneumonia occupied 5th and 9th causes of death. 6. Stomach cancer and hepatoma occupied 61.3% of total death due to malignant neoplasms. 7. Most frequent cause of neonatal death was birth injury. Two deaths due to tetanus were found in 1975, but no death due to this disease was found in 1976. 8. About half of deceased received care from physician before death.