• Korean Journal of Occupational Health Nursing
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• v.10 no.1
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• pp.55-65
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• 2001

The purpose of this study was to find out the status of occupational health management and the degree of recognition about the occupational health management of employees 248 small-scale enterprises which have been managed by the small-scale enterprises health care management support institution in 1999, were selected for study, in Kwang-Ju City. 98 employees were selected in 116 industries of them to grasp recognition of employees about the occupational health management. ► The Status of Occupational Health Management 1. Of the sample industries, 62.1 percent employed eleven to twenty-nine workers. Of the sample workers, 72.1 percent occupied workers who were engaged in the production line. 2. Environment evaluation was made on 82.7 percent of the sample industries and general exam made on 66.5 percent and specific health exam done on 73.4 percent. 3. The harmful factors in the sample industries were found to lie noise, dust, solvent, heavy metal, etc. 4. In general health exam 1,774 workers were participated and 148 workers got the result of above grade C and were diagnosed as having the problems with digestive system (63.6%), circulatory system(20.6%). etc. ► The Degree of Recognition about The Occupational Health Management of Employees. 1. Respondents were mainly in the twenties (42.9%), males(69.1%), duration of working period of five to ten years(24.0%), office workers(51.0%), monthly income under one million(55.7%). 2. Recognition of employees about the occupational health management consists of workplace environmental evaluation, health education, health exam and protector management. Their recognition on health education showed high score (mean 3.1), but generally the score was low(mean 2.9).

• Journal of the Korean Society for Environmental Technology
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• v.19 no.6
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• pp.586-599
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• 2018

To learn about the discharge facility management of industrial complexes and the discharge characteristics of water pollutants in drainage, 11 sites were selected, including 16 discharge companies of Hanam Industrial Complex and High-Tech Scientific Industrial Complex and 4 drainages of the industrial complexes. Through the analysis, it was found that 12(75 %) of the 16 discharge companies had specific hazardous substances other than those registered at the time of installation and registration of the wastewater discharge facilities. In terms of other pollutants, 11 of the 16 companies(about 69 %) were found to have pollution items that differed from those included in approved and reported items lists. In addition, Formaldehyde, Mn, Zn, and Ba were discharged from 11 out of the 16 companies. Significantly, one of the specific hazardous water pollutants, Cu, was detected in all discharge facilities at levels from 0.029 to 0.929 mg/L. Even in major complexes drainages and the main stream of the Yeongsangang. As, Dichloromethane, and Chloroform were detected. However, it cannot be conclusively claimed that it is probable that these substances were actually discharged from the above facilities because research was only done in a limited range(Class 1 to Class 3), and therefore, further research is required. In the future, it will be necessary to expand the research scope of the discharge companies in order to establish a database of water pollutants, and to improve permits and reported items based on discharged substances.

• Journal of Korean Public Health Nursing
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• v.2 no.2
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• pp.62-80
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• 1988

The main purpose of this study was to find out the actual status of safety and heal th education activities in the manufacturing industries through survey of 136 plants in Seoul City and Gyunggi- Province Area which employ nurses being charged in the safety and health care services to the employees. A questionaire was mailed to the employees on the Mar. 2, 1987. Total 634 responds from 87 industries were collected by Apr. 20, 1987. Among the total, 618 responds from 80 industries were included in the analysis. The major findings obtainded from this study are summarized as follows; 1. Safety and health education activities in each industry: 1) The $67.6\%$ of safety directors surveyed were performing the education to the employees. And in case of medical directors, it was $18.8\%$ of them. 2) Periodically, annual safety' and health education programs were being drawn up in the $65.0\%$ of the industries (52 companies). And the $60.6\%$ of the planners were safety directors of safety staffs in charge. 3) It was only $27.5\%$ of the companies surveyed in which the safety and health education were performed more than an hour every month. In the $22.5\%$ of the companies, neither safety programs nor health education activities were performed. 4) In the $47.5\%$ of them, safety and health educations were performed in cooperation with related agencies such as health center. 2. The rate of employees participated in safety and health educations; 1) The received rates by subjects of the educations when labors were newly employed to their companies were as follows; education regarding danger and profer handling method of machinery and appliances: $64.2\%$, education regarding noxiousness and handling method of raw materials: $42.2\%$, etc. 2) The $63.6\%$ of the labors received educations on safety and health when they changed their work places. 3) The $74.8\%$ of the labors received specific safety and health educations. 4) The general safety and health educations were received by the $47.2\%$ of management and clerical personnel and $50.0\%$ of labors pre and post physical examination. 3. The main reasons of inactive performance of the educations were as follows; lack of knowledge and inexperience of the occupational safety and health staffs, lack of cooperations between themselves and low need of workers for safety and health education, etc. 4. The preferable subjects of educations for workers; (1) pre and post education of physical examination, (2) education regarding the prevention of accidents. (3) general health care, sex education and family planning, etc. As a result of this study, we can conclude that the safety and health education work in industries as the subject of this study is on the incipient stage. Appropriate measures are to be taken for the activation of safety and health education work such as; continuous public relations, financial and technical supports of the government, training of professional/occupational safety and health staffs, efforts of workers to receive the education and collaborations of the employers.

• Safety and Health at Work
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• v.7 no.4
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• pp.268-283
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• 2016

Among men, depression is often unrecognised and untreated. Men employed in male-dominated industries and occupations may be particularly vulnerable. However, efforts to develop tailored workplace interventions are hampered by lack of prevalence data. A systematic review of studies reporting prevalence rates for depression in male dominated workforce groups was undertaken. Studies were included if they were published between 1990 - June 2012 in English, examined adult workers in male-dominated industries or occupations (> 70% male workforce), and used clinically relevant indicators of depression. Twenty studies met these criteria. Prevalence of depression ranged from 0.0% to 28.0%. Five studies reported significantly lower prevalence rates for mental disorders among male-dominated workforce groups than comparison populations, while six reported significantly higher rates. Eight studies additionally found significantly higher levels of depression in male-dominated groups than comparable national data. Overall, the majority of studies found higher levels of depression among workers in male-dominated workforce groups. There is a need to address the mental health of workers in male-dominated groups. The workplace provides an important but often overlooked setting to develop tailored strategies for vulnerable groups.

• Journal of Bio-Environment Control
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• v.31 no.4
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• pp.300-310
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• 2022

The objective of this experiment was to investigate the effect of drip irrigation volume on tomatoes (Solanum lycopersicum L.) grown in a greenhouse using perlite medium. Plants were treated by three different irrigation treatment I₀, I₂₅, and I₅₀ (where irrigation volume of I₂₅ and I₅₀ was 25% and 50% higher than I₀, having limited or no leaching). Growth characteristics of plants, yield and water use efficiency were measured. The result showed that plant height, leaf length and leaf width were lowest in the I₀ treated plants. However, these parameters were not statistically significant differences between the plants that were grown in the I₂₅ and I₅₀ treatment. Soluble solids content, acidity and dry matter of 111th, 132nd, and 143rd days harvested tomato were higher in the plants irrigated with lowest volume (I₀) than the higher volume (I₂₅ or I₅₀). In addition, water content was lower in the 111th and 132nd days of harvested tomatoes from the I₀ treatment. The number of big-size tomatoes (>180 g) was significantly higher in the I₂₅ irrigated plants. There was no significant difference in the total number of harvested fruits among the treatments. The average fruit weight and total yield of harvested tomatoes were lowest in the I₀ treated plants. The water consumption of tomato was not significantly different amongst the treatments but water use efficiency was lowest in the I₀ treatment. Principal component analysis revealed that total soluble solid and acidity of tomato showed a positive correlation between each other. These results suggest that I₂₅ was the optimum irrigation treatment for tomato based on its measured growth characteristics, yield and water use efficiency.

• Journal of Korean Society for Quality Management
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• v.51 no.3
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• pp.403-418
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• 2023

Purpose: The acceleration of technological innovation, specifically Industry 4.0, has triggered the emergence of a quality management paradigm known as Quality 4.0. This study aims to provide a systematic overview of dispersed studies on Quality 4.0 across various disciplines and to stimulate further academic discussions and industrial transformations. Methods: Text mining and machine learning approaches are applied to learn and identify key research topics, and the suggested key references are manually reviewed to develop a state-of-the-art overview of Quality 4.0. Results: 1) A total of 27 key research topics were identified based on the analysis of 1234 research papers related to Quality 4.0. 2) A relationship among the 27 key research topics was identified. 3) A multilevel framework consisting of technological enablers, business methods and strategies, goals, application industries of Quality 4.0 was developed. 4) The trends of key research topics was analyzed. Conclusion: The identification of 27 key research topics and the development of the Quality 4.0 framework contribute to a better understanding of Quality 4.0. This research lays the groundwork for future academic and industrial advancements in the field and encourages further discussions and transformations within the industry.

• Journal of Preventive Medicine and Public Health
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• v.31 no.4 s.63
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• pp.708-718
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• 1998

To investigate the effect of smoking and drinking habit on the health status in lead using industries, 2,785 male workers in lead using industries (7 storage battery industries, 7 secondary smelting and related industries, and 4 primary metal and other manufacturing industries) were selected for this study. This study was carried out as a part of periodic health examination. Selected study variables were zinc protoporphyrin in whole blood (ZPP), SGOT and SGPT for laboratory test. Questionnaire for lead related symptoms and smoking and drinking habit was provided to all the workers and filled up by themselves and reconfirmed by physician. The results obtained were as follows; 1. The overall smoking and drinking rate of study population were 69.8% and 73.6%, respectively. While the smoking and drinking rate of storage battery workers were 68.8% and 72.3%, those of secondary smelting industries and other industries were 66.0% & 66.4% and 74.6 & 80.3% respectively. 2. While the mean values of blood ZPP of lead exposed workers were significantly higher than other group, those of SGOT of storage battery workers were significant higher than other worker. But there were no differences of mean values of other variables. 3. Smoking habit did not affect on the mean value of blood ZPP of workers in special health examination group, but there were significant differences of blood ZPP and SGOT between drinker and non-drinker. 4. Symptom prevalence of lead exposure were higher in drinking and smoking group than non-drinking and non-smoking group. 5. In multiple regression analysis of the total lead related symptoms, blood ZPP, SGOT, and SGPT as dependent variable, respectively, and age, work duration, blood ZPP, pack year and amount of alcohol drinking as independent variables, work duration, pack year, amount of alcohol drinking, age contributed to total symptoms; and age, work duration, pack year contributed to blood ZPP; and age, amount of alcohol drinking, work duration contributed to SGOT; and pack year contributed to SGPT.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.27 no.4
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• pp.398-422
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• 2017

Objectives: The major aim of this study is to construct the database of retrospective exposure assessment for crystalline silica through reviews of literatures in South Korea. Methods: Airborne concentrations of crystalline silica were collected using an academic information search engine, Research Information Service System(RISS), operated by the Korea Education & Research Information Service(KERIS). The key words used for the literature search were 'silica', 'crystalline silica', 'cristobalite', 'quartz' and 'tridymite'. A total number of 18 published documents with the information of crystalline silica level in air or bulk samples were selected and used to estimate retrospective exposures to crystalline silica. Weighted arithmetic mean(WAM) calculated across studies was summarized by industry type. Industries were classified according to Korea Standard Industrial Classification(KSIC) using information provided in the literature. Results: A total of 2,131 individual air sampling data measured from 1987 to 2012 were compiled. Compiled individual measurement data consisted of 827 respirable crystalline silica (RCS), 31 total crystalline silica(TCS), 24 crystalline silica(CS), 778 respirable dust(RD) and 471 total dust(TD). Most of RCS measurements(68.9%) were collected from 'cast of metals(KSIC 243)'. Comparing industry types, 'mining coal and lignite(KISC 051)' showed the highest WAM concentration of RCS, $0.14mg/m^3$, followed by $0.11mg/m^3$ of 'manufacture of other non-metallic mineral products(KSIC 239)', $0.108mg/m^3$ of 'manufacture of ceramic ware(KSIC 232)', $0.098mg/m^3$ of 'heavy construction(KSIC 412)' and $0.062mg/m^3$ of 'cast of metals(KSIC 243)'. In terms of crystalline silica contents in airborne dust, 'manufacture of other non-metallic mineral products(KSIC 239)' showed the highest value of 7.3%(wt/wt), followed by 6.8% of 'manufacture of ceramic ware(KSIC 232)', 5.8% of 'mining of iron ores(KSIC 061)', 4.9% of 'cast of metals(KSIC 243)' and 4.5% of 'heavy construction(KSIC 412)'. WAM concentrations of RCS had no consistent trends over time from 1994 ($0.26mg/m^3$) to 2012 ($0.12mg/m^3$). Conclusion: The data set related RCS exposure level by industries can be used to determine not only the possibility of retrospective exposure to RCS, but also to evaluate the level of quantitative retrospective exposure to RCS.

• Journal of Service Research and Studies
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• v.10 no.1
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• pp.69-83
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• 2020

The purposes of this study is to identify the critical success factors for the 4th industrial revolution through literature review and to empirically evaluate the validity of these factors through questionnaires from executives engaging in the industries of the 4th industrial revolution. Literature review identifies leadership, change management, top management support, strategic fit, training, empowerment, teamwork, organizational culture, communication, and project management as ten critical success factors, Questionnaires were administered to CIOs and CEOs in the industries belong to the 4th industrial revolution. Response rate was 64.4% which shows quite high participation. Respondents rated strategic fit as the most important factor, followed by top management support, leadership, change management, project management, teamwork, communication, training, organizational culture, and empowerment. To successfully pursue the 4th industrial revolution, the followings are recommended. (1) detailed and refined execution strategy, (2) establishment of effective network among government, public companies, research institutes, universities, and industries, (3) strategic and long-term plan, (4) differentiated execution strategy from other countries and global cooperation system.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.5 no.2
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• pp.160-171
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• 1995

The size characteristics of lead particle which is one of the important factors associated with absorption of lead were ignored in establishing lead standard. This study was conducted to investigate distribution of lead particles by operation of industry. Aerodynamic Mass Median Diameters (MMD) of airborne lead particles in the battery and litharge manufacturing industry were $14.1{\mu}m$ and $15.1{\mu}m$, respectively. There was no significant difference between those two values(p>0.05). However, the diameters in radiator manufacturing and secondary smelting industry were $1.3{\mu}m$, $4.9{\mu}m$, respectively. Those were significantly smaller than the particle sizes in other industries(p<0.05). Total lead concentrations in the secondary smelting industry were higher than those in the battery and litharge manufacturing industry. Total lead concentrations in other industries except radiator manufacturing industry exceeded the standard of $50{\mu}g/m^3$. Only radiator manufacturing industry indicated lead concentrations significantly lower than those in other industries(p<0.05). Concentrations of lead particles smaller than $1{\mu}m$ defined as respirable fraction by OSHA's CPA model assumption were $72.4{\mu}g/m^3$ in the secondary smelting industry, exceeding $50{\mu}g/m^3$. The relationship of concentrations between total lead and lead of particles smaller than $1{\mu}m$ was log Y = 0.46 logX + 0.06(n=119, $r^2=0.44$, p=0.0001). Relationship of respirable lead concentrations between OSHA and ACGIH was significantly detected in the litharge and battery manufacturing industry(p=0.0001), but was not significant in the radiator(p=0.2720) and secondary smelting manufacturing industry(p=0.2394). As MMDs of lead particles generated in industry were small, difference of respirable lead concentration between OSHA and ACGIH became smaller. There was a significant difference between concentrations respirable lead defined by two organizations such as OSHA and ACGIH in the battery and litharge manufacturing industry. Average concentration of respirable lead by ACGIH definition was 43.3 % of total lead in secondary smelting and 48.9 % in radiator manufacturing industry, and lower fractions were indicated in battery and litharge manufacturing industry. Relationships of total lead with IPM, TPM, and RPM were significant respectively(p=0.0001) and lead concentrations by particle size could be estimated using this relationship. Linear regression equation between total lead concentration(X) and ACGIH-RPM concentration(Y) was log Y = 0.76 log X - 0.40($r^2=0.89$, p=0.0001).