• Title/Summary/Keyword: Industries 4.0

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Analysis of Industries 4.0 Top Documents (인더스트리 4.0 Top 문서 분석)

  • Baek, D.M.;Kim, S.Y.;Hahm, J.H.
    • Electronics and Telecommunications Trends
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    • v.33 no.4
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    • pp.81-91
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    • 2018
  • The purpose of this article is to abstract Industries 4.0 Top documents and express the fundamental strategies. It is clear that disruptive AI + ICBM technology will change the entire industry, and therefore each country is making a strategy to prepare for the future. Example cases are Japan's Monozukuri, Germany's Industry 4.0, the USA's Reshoring, and China's Made in China 2025. I would like to introduce Industrial Industries 4.0 in Germany because Germany used the industrial industries' term first and Korea has as many SMEs as Germany has. The main characteristic is that it can be applied to the size of the individual SMEs rather than the national size.

Workers' Exposure to Airborne Fibers in the Man-made Mineral Fibers Producing and Using Industries (인조광물섬유 제품 제조 및 취급 근로자의 공기중 섬유 노출 평가 및 노동부 노출기준 고찰)

  • Shin, Yong Chul;Yi, Gwang Yong
    • Journal of Korean Society of Occupational and Environmental Hygiene
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    • v.15 no.3
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    • pp.221-231
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    • 2005
  • In this study, occupational exposures to man-made mineral fibers (MMMFs) including glass wool, rock wool, and continuous glass filament fibers were determined and evaluated on the American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV). A total of 171 personal samples collected from 4 glass wool fiber, 2 rock wool fibers, 4 continuous filament glass fiber products manufacturing and a glass fiber and rock wool insulations using industries, and determined respirable fibers concentrations using the National Institute for Occupational Safety and Health (NIOSH) Method 7400, "B counting rule. The fiber concentrations of samples from workers installing thermal insulations in a MMMF using industry showed the highest value: geometric mean (GM) = 0.73 f/cc and maximum = 2.9 f/cc, 70% of them were above the TLV, 1 f/cc. Workers' exposure level (GM= 0.032 f/cc) in the rock wool manufacturing industries was significantly higher than those of glass wool (GM=0.012 f/cc) and continuous filament glass fibers (GM=0.010 f/cc) manufacturing industries (p<0.01). No samples were more than the TLV in the MMMF manufacturing industries. There was a significant difference among companies in airborne fiber levels.

Environmental Working Status of Mercury using Industries in Korea (수은 취급사업장 작업환경 실태에 관한 조사연구)

  • Chung, Mu Soo;Hwang, Kyu Yoon;Ahn, Kyu Dong;Lee, Byung Kook
    • Journal of Korean Society of Occupational and Environmental Hygiene
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    • v.1 no.2
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    • pp.128-135
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    • 1991
  • To obtain the basic information of environmental working status in mercury industries in Korea, 26 mercury industries were investigated with mercury concentration in air and various factors affecting on workplace environment. The results were as follows : 1. The mean air concentration of mercury was $0.046{\pm}0.035mg/m^3$ in 26 mercury industries. 2. The highest mean air concentration of mercury among 26 mercury industries classified by type of product was found in sodium hydroxide manufacturing industries ($0.054{\pm}0.020mg/m^3$) and the lowest mean was found in mercury battery manufacturing industries ($0.003{\pm}0.002mg/m^3$). 3. While the highest' mean air concentration of mercury was found in manual method ($0.061{\pm}0.041mg/m^3$) among the types of operation method, lowest one was found in automatic method ($0.035{\pm}0.025mg/m^3$). 4. While the mean air concentration of mercury was $0.023{\pm}0.018mg/m^3$ in good clean status of workshop, the mean air concentration of mercury in bad clean status was $0.06{\pm}0.033mg/m^3$. Among various factors affecting on th e air concentration of mercury, clean Iiness of workshop showed statistically significant difference with air concentration of mercury, and automation of workshop and local exhaust ventitlation also played important role in control the air concentration of mercury in the working environment.

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A Comparative Analysis of the Level of Occupational Health : Before and After the Subsidiary Program on Health Care Management of Small Scale Industries (영세사업장 보건관리 지원사업 실시 전후의 산업보건수준 비교 분석)

  • Jung, Hye Sun
    • Korean Journal of Occupational Health Nursing
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    • v.4
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    • pp.58-83
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    • 1995
  • The small scale industries which have less than 30 employees occupy 86.5% of total number of industries in Korea. And though they have higher accident rate and lower environmental condition than big industries, it has been not mandatory to appointing health care manager at factory. So, from 1993, government subsidizes to the health care management of small industries. The purpose of this study is to identify the real feature of health care status in small industries, and to evaluate the level of health care management, before and after the subsidiary program. 65 small plating industries which have been managed by the same health care management support institution in 1993 were selected for study. Of the 65 industries, 3 which have not taken both environmental evaluation and health screening in 1994, and 9 which have closed were excluded from study sample. And the remaining 53 were analyzed by using the results of environmental evaluation and health screening, reported to the Ministry of Labor, before and after the subsidiary program, the analysis was done by the comparison of the two year paired data of the same industry. Over-permissible-limit rate, health screening implementation rate, above grade C rate were calculated and compared. The status of health care management ; 1. Of the sample industries, 96.9% provide protective equipment and 80.0% set up ventilating system. Protective gloves (89.2%) and protective clothing (80.0%) are widely provided, but ear plugs (4.6%) are rarely provided. 21.5% of the protective equipment are well put on, and 40.4% of the ventilating systems function well. 2. In 1993, 35 industries, 53.8% of the sample, checked working environment twice. Over-permissible-limit rates of heavy metal (12.2%), suspended particle (11.1%), noise (5.5%) were high. To put on protective equipment and to set up local ventilating system were pointed out by the examiners. 3. General health screening was done at 63.1% of the sample industries and 35.3% of total workers were examined. Specific health screening was done at 93.8% of the sample industries and 75.4% of workers were examined. 15.5% of workers was provided to be above grade C and to have digestive system disease (43.3%), circulatory disease (18.9%), and hematopoietic disease (14.2%), etc. 4. In 1993, the subsidiary program of health care management was provided in forms of health education, health counseling, and rounding check of working field. And 61.5%, 83.0%, 55.4% of sample industries respectively received it. The average visit per industry was 1.8. Comparisons of the level of occupational health before and after the subsidiary program ; 1. Over-permissible-limit rates of hazardous factors of 1993 and that of 1994 were compared. The rates of suspended particle, noise, organic solvent of 1994 (37.5%, 13.4%, 24.2% respectively) were higher than that of 1993 (25.0%, 6.0%, 6.3% respectively). In the case of acid, there was no difference between the rate of 1993 and that of 1994. Only the rate of heavy metal decreased from 12.9% in 1993 to 3.0% in 1994. 2. General health screening was done at 38.7% of the sample industries in 1993 and at 44.6% in 1994. But the implementation rate of specific health screening decreased from 72.4% in 1993 to 64.6% in 1994. 3. The implementation rate of specific health screening was analyzed by some health factors. The rate of suspended particle increased from 61.8% in 1993 to 91.2% in 1994. But the rates of the others-noise, organic solvent, heavy metal, specific chemical substances-decreased. 4. Above grade C rate in health screening increased from 27.8% in 1993 to 35.5% in 1994. But that of endocrine disorders and pulmonary disease decreased.

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Time Trend in Airborne Asbestos Concentrations among Asbestos-containing Material Handling Industries in Korea, 2000 to 2005 (우리나라 석면함유제품 취급 사업장의 공기 중 석면 농도의 시간적 변화)

  • Phee, Young Gyu
    • Journal of Korean Society of Occupational and Environmental Hygiene
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    • v.26 no.4
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    • pp.454-465
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    • 2016
  • Objectives: The purpose of this study was to evaluate trends in asbestos exposure among asbestos-handling industries from 2000 to 2005. Methods: The data included the number of industries and workers exposed, concentrations of asbestos and the amount exceeded, and the type and size of industry by year. These data were collected by 46 regional employment and labor offices in Korea using work environment monitoring reports. A total of 1,481 samples from 284 industries were extracted from the reports and were analyzed with no data modification. Results: The means of asbestos concentration decreased from $0.84f/cm^3$ to $0.03f/cm^3$ during the period 2000-2005. Among the total of 1,481 samples, 11 samples(0.7%) exceeded the KOEL, and 178 samples(12.0%) were ACGIH TLV. The insulating paper product manufacturing industry was found to have the highest level of asbestos, followed by the fireproofing manufacturing industry, brake lining products manufacturing industry, commutator products manufacturing industries, and construction materials manufacturing industry. The number of asbestos handling industries decreased from 48 industries with 1,155 employees to 37 industries during the period of 2000 to 2005, but the number of asbestos workers expanded to the point that 1,182 employees could be found in 2005. Conclusion: Based on these results, the strengthening of the KOEL and new regulations turned out to help reduce asbestos exposure levels. This study recommends that retrospective exposure to asbestos based on various industry types should be assessed.

The study of new host materials for solution-processed green organic electrophosphorescence

  • Jung, Sung-Hyun;Lee, Ho-Jae;Kim, Young-Hoon;Kim, Hyung-Sun;Yu, Eun-Sun;Chae, Mi-Young;Chang, Tu-Won
    • 한국정보디스플레이학회:학술대회논문집
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    • 2008.10a
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    • pp.454-457
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    • 2008
  • We report the syntheses, photophysical properties and device performances of solution processible host material for green-phosphorescent OLEDs. The butterfly-shaped new host materials with nonconjugated linkage of carbazole and fluorene moieties have large triple energy band gap around 2.8 eV. All of the EL devices exhibited turn-on voltages in the range of 4.8-5.0 V. GH-4 exhibited the best performance with a maximum current efficiency and power efficiency of 21.1 cd/A and 7.9 lm/W.

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A Report of the Periodic Physical Examination for the Industrial Workers in Korea (産業場勤勞者에 대한 健康診斷 實態調査 -定期 健康診斷 結果를 中心으로-)

  • Choi, Ae-Ra
    • Journal of Environmental Health Sciences
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    • v.9 no.2
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    • pp.19-30
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    • 1983
  • This report is intended to find out the health status of the korean industrial workers based on the periodic physical examination in 1982. It has resulted in the followings: 1. As of April, 1982, total No. of industries was 81,136 of which workers was totally 3,383,700 persons classifying into 2,163,600 in male and 1,220,100 in female, and manufacturing field was occupied 44.6% of total industries and 61.0% of total workers. 2. In view of size, industries having less than 9 ordinary workers was 47.5%, those having less than 29 ordinary workers was 77.0%. 3. Applicable target industries to industrial safety & health law was 31,059 which was covered 38.3% of total establishments and No. of workers was 2,192,511, 64.8% of all industrial workers. 4. No. of establishment & workers conducting the physical examination was 26,463 which is 85.2% of all examining industries and was 2,007,091, 91.5% of all examining required workers. 5. Case having general disease by general physical examination was 3.5% of examining workers and especially it was appeared 9.7% in mining. 6. Case having general disease by special physical examination was 3.8% of examining workers and incidence rate for occupational disease was 2.4% of examining workers. 7. No. of the occupational diseased was 5,341 persons which is 2.6% of all the examining workers, 205,497 and its rate was appeared highly as 7.5% of silicosis in mining workers and 1.4% of hearing difficulty to noise in construction.

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Numerical Study on the Effects of Combination of Blade Number for Shaft Forces and Moments of Contra-Rotating Propeller (상반회전 프로펠러의 날개수 조합에 따른 축기진력 연구)

  • Paik, Kwang-Jun;Lee, Jinsuk;Lee, Taegu;Hoshino, Tetsuji;Park, Hyung-Gil;Seo, Jongsoo
    • Journal of the Society of Naval Architects of Korea
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    • v.50 no.5
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    • pp.282-290
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    • 2013
  • The effects of the combination of blade number for forward and after propeller on the propeller shaft forces of a contra-rotating propeller (CRP) system are presented in the paper. The research is performed through the numerical simulations based on the Reynolds-Averaged Navier-Stokes equations (RANS). The simulation results of the present method in open water condition are validated comparing with the experimental data as well as the other numerical simulation results based on the potential method for 4-0-4 CRP (3686+3687A) and 4-0-5 CRP (3686+3849) of DTNSRDC. Two sets of CRP are designed and simulated to study the effect of the combination of blade number in behind-hull condition. One set consists of 3-blade and 4-blade, while the other is 4-blade and 4-blade. A full hull body submerged under the free surface is modeled in the computational domain to simulate directly the wake field of the ship at the propeller plane. From the simulation results, the fluctuations of axial force and moment are dominant in the case of same blade numbers for forward and after propellers, whereas the fluctuations of horizontal and vertical forces and moments are very large in the case of different blade numbers.

A Developmental Study on Preventing Occupational Disease Programme in Small- Medium Sized Industries (보건관리대행사업장 직업병예방관리 사업 프로그램 개발에 관한 연구)

  • Lee Myung-Sook
    • Journal of Korean Public Health Nursing
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    • v.9 no.2
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    • pp.104-114
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    • 1995
  • This study was designed to develop preventing occupational disease programme in small-medium scale industries. The intervention was done in 354 enterprises from July to December in 1993 by health personnels in mobile occupational health centers. The summarized results of the above achievements were as follows. 1. Total number of enterprises were 354. Among them $66.9\%$ was under 100 workers, $26.6\%$ was u!1der 200 workers, and $6.5\%$ was belong to over 200 workers. The majority manufactures were non-metallic mineral product industries $(11.3\)$ fabricated metal product industries $(11.0\%)$. and textile industries $(10.7\%)$. 2. In 1993, for 350 enterprises were carried out evaluation of workplace environment. A total of $76.3\%$ industries were found to improper showing higher level of hazardous agent than the TLV. Noise and dust are the typical agent of which levels in workplace were high in most of industries. 3. A total 60 cases $(0.8\%)$ of occupational diseases were detected through physical check-up from 7,394 industrial workers in 1993. Detection rate by hazardous agent was highest among workers in relation to dust, and secondly highest to noise. 4. Through the systematic approach by hazardous agent was increased to the monitoring of work condition and follow up care of occupational disease. In future, there should be development in the scaled check list of preventing occupational disease management.

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Development and Characteristics of New Cultivar 'Green Ever' in Zoysiagrass (한국잔디 신품종 '그린에버'의 개발 및 특성)

  • Tae, Hyun-Sook;Hong, Beom-Seok;Shin, Chong-Chang;Jang, Gong-Man;Kim, Kyung-Duck;Park, Dae-Sup
    • Weed & Turfgrass Science
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    • v.3 no.4
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    • pp.329-335
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    • 2014
  • This study was performed to study characteristics of new zoysiagarass cultivar 'Green Ever' (Plant Variety Protection Application no. 2014 - 02). 'Green Ever' was developed by selection breeding among 100 native zoysiagrasses collected in South Korea. 'Green Ever' showed specific bands (1.48 kb with OPC14 and 1.05 kb with OPD5) which were distinct from 'Anyang Joonggi' or 'Dongrae Koryogi' in RAPD analysis. 'Green Ever' was classified as Z. matrella in morphological evaluations including plant height ($6.8{\pm}0.5cm$), leaf width ($2.0{\pm}0.1mm$), height of lowest leaf ($1.9{\pm}0.1cm$) and seed length ($3.0{\pm}0.1mm$), which was similar with morphological characteristics of 'Dongrae Koryogi'. Turf quality, shoot density and chlorophyll content of 'Green Ever' were higher than them of 'Anyang Joonggi' and 'Dongrae Koryogi' under intensive management such as fairway on golf course, especially shoot densities of 'Green Ever' were excellent higher than 'Anyang Joonggi' and 'Dongrae Koryogi' during experimental periods. It could be extensively used in fairway, teeing ground of golf courses and landscape garden after further study about various environmental adaptabilities such as winter kill, wear tolerance etc.