• Journal of Digital Convergence
• /
• v.12 no.1
• /
• pp.593-598
• /
• 2014

To solve the labor shortage of skilled workers, the ship building industry needs the automation and mechanization. Especially, compared with other process, handrail manufacturing process of ship building falls behind the automation. In this paper, we designed and implemented a flat-iron automation system using computer convergence technology that can be used in the production of handrails in shipbuilding. The system's machine part was designed by considering the efficiency, productivity, and stability of the cutting process, and checked the stability of the structure using CATIA and ANSYS. The system's control part was used the PCNC controller to provide openness and scalability. And the part was made for system control and monitoring the system through screen manipulation with touch-screen form. A flat-iron automatic system was developed by converging the mechanics, electronics and computer technology and it will contribute to improve the productivity of the industrial system.

• The Journal of the Korea Contents Association
• /
• v.20 no.3
• /
• pp.370-378
• /
• 2020

This study aims to identify the types and characteristics of followership perceived by hotel employees as emotional workers in terms of the diagnosis of their fellowship awareness toward their managers and the detailed patterns of subjective followership. The Q methodology is applied to find out the types of followership of hotel employees, the similarities and differences between each type, and the meanings of each type. A total of 40 questions are selected for the Q sample. The analysis shows that there are four types such as 'organizational oriented', 'individual oriented', 'adaptive oriented' and 'critical passive oriented'. It also shows that each type has a unique characteristic, and identifies the items in the all four types that they share or do not. This study is expected to present a new perspective on hotel management by identifying the characteristics of the followership from the perspective of the hotel staff who are supposed to do some emotional labor caused by the emotional dissonance hotel staff suffer.

• The Journal of the Korea Contents Association
• /
• v.20 no.4
• /
• pp.385-395
• /
• 2020

The dance area is less demanding than the supply, so it is not able to properly utilize talented people. If the university based dance research center is activated in this field, it can be an alternative by actively interacting with the residents of the community. Therefore this study was surveyed by specialists on invigorating dance institutes by applying new industrial development. Since then, workers were requested to evaluate importance and urgency of 23 questionnaires collected. As a result, the most important item was program development, and the most urgent was financial support. The first ranked sub-item of program development was organization of R&D cost(importance) and recruitment of professionals(urgency). Regarding financial support, it was budget increase and eligibility expansion of staff cost(importance) and subdivision and extended support for labor cost.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.16 no.12
• /
• pp.8896-8900
• /
• 2015

Recently, various career paths draw young workers from twenty to forty to the metro city in Korea. The korea's agriculture sector has decrease in population and productivity which result a threat for it to become an aging society. Also, our country has a difficulty in a tough competition with other countries through agricultural market-opening such as WTO and FTA. In this paper, we introduce a technology using open-source project including Raspberry that easily accessible and applicable to an agricultural industry. In other words, as we build a device monitoring the production environment, everyone can use agricultural sector through an IoT technology, solve the problem with a labor shortage through production process automation, check the condition of the agricultural environment in real time, enhance the quality of the agricultural product by corresponding a certain condition, and improve the competitiveness through a competitive price comparing to the worldwide farm product. Also, we find a way to use data to the other business through data collection and analysis in a process of using the IoT.

• Journal of Korean Society of Occupational and Environmental Hygiene
• /
• v.25 no.4
• /
• pp.566-572
• /
• 2015

Objectives: The major objective of this study was to analyze insomnia after the change to consecutive day shift from day and night shift in a motor assembly factory. Materials: Data were collected at before and after shift system change through a survey conducted by a labor union. We analyzed transition of PSQI(Pittsburgh Sleep Quality Index) among 222 workers by separating the day shift week and night shift week. The cut-off point of insomnia was 8.5 on the PSQI. Results: Mean PSQI in the day shift week significantly did not decrease, going from $6.36{\pm}3.23$ to $6.46{\pm}3.00$(p=0.612 by paired t-test), Mean PSQI for night shift week significantly decreased from $8.31{\pm}3.36$ to $6.19{\pm}3.18$(p<0.001 by paired t-test). However, mean PSQI in the day shift week increased from $6.33{\pm}3.83$ to $7.11{\pm}2.86$ in ${\geq}50$ years(p=0.085, by repeated measured ANOVA). Mean PSQI score in the night shift week improved more in the married group(from $8.38{\pm}3.27$ to $6.12{\pm}3.18$) than in the non-married group(from $7.82{\pm}3.27$ to $6.12{\pm}3.18$)(p=0.038, by repeated measured ANOVA). Conclusions: The change to consecutive day shift improved insomnia in night shift. However, insomnia in the day shift week was worsened among those more than 50 years old.

• Korean Journal of Construction Engineering and Management
• /
• v.4 no.4 s.16
• /
• pp.173-181
• /
• 2003

During the last few years, the use of Pre-tensioned spun high strength concrete piles(PHC pile) has been gradually increased in many construction sites. Cutting work of the concrete pile is an important task to crush a part of pile head which is compressed with more than 800$\cal{kg}f/cm^2$. It is usually performed by a crusher and three to four skilled workers. Recent analysis results of the pile cutting work reveal that it frequently makes a lot of cracks which significantly reduce the strength of the pile and is labor-intensive work. The primary objective of this study is to propose conceptual designs for developing an automated pile cutting machine. It is anticipated that the development of the automated pile cutting machine would be able to bring improvements in safety, productivity, quality as well as cost saving.

• Journal of Broadcast Engineering
• /
• v.19 no.6
• /
• pp.907-915
• /
• 2014

This paper is to assess the influence of business field and qualification acquisition on job-getting and working business by conducting survey against the qualification holders of the national technology in the area of ICT industry. The result shows that respondents working in the ICT industry are 58.7% of samples. Their working business are shown as manufacturing area of broadcasting & telecommunication, telecommunication service, science/technology service, and media service. As for the value of qualification, the current working business area of respondents is more influential factor than the types of qualification. Workers of media service industry recognize the qualifications more useful in job-getting and job performance.

• Journal of Korean Society of Occupational and Environmental Hygiene
• /
• v.8 no.2
• /
• pp.254-263
• /
• 1998

A worker employed in a serpentine mine was found developed mesothelioma as the first case of Korea in 1997. Asbestos was known as a causative agent for mesothelioma. Thus, asbestos contamination in mines could be a big health threat to those workers who were unknowingly exposed. However, there was no report that any minerals found in Korea contained asbestos. This study was carried out to find the presence of any asbestiform fibers in minerals which could be obtained in Korean mines. We examined fifteen minerals from 44 mines which were suspected contaminated with asbestiform fibers. Asbestiform analysis was done with high resolution transmission electron microscope(TEM), with energy dispersive X-ray spectroscope(EDX) and X-ray diffraction(XRD) analyses. Among asbestiform fibers, chrysotile was found in chrysotile, serpentine, talc and pyrophylite specimens from 11 mines. Tremolite was found in tremolite and talc specimens from three mines. Mordenite was found in zeolite specimens from two mines. Wallastonite and sepiolite were found in wallastonite and sepiolite specimens respectively. Crocidolite, antigorite and actinolite were found from talc specimens. But no asbestiform fiber contaminants were found in doromite, vermiculite, limestone, marble, gypsum, kaolin, and clary specimens. Thus, these asbestiform fibers such as such as chrysotile, tremolite, mordenite, crocidolite, antigorite and actinolite could be the responsible agents for the health hazards such as mesothelioma and other cancers.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.6 no.6
• /
• pp.560-565
• /
• 2005

This paper deals with the development of manually operated die used for the manufacture of octagonal boxes into two sets of automated die. In particular, theoctagonal boxes are used fur the switch boxes intended fur the cable conduit of buildings or f3r wiring connection. Manufacturing these boxes requires forming the materials using the primary press before they undergo 2nd through 6th processing by the press machine including the four sides of the octagonal outlet box and bending. Such complicated process hikes up labor cost, slows down production, and results in defect rate of $10\%$ or higher; hence the overall rise in manufacturing cost. Moreover, workers avoid this type of work due to the roar and vibration coming from the press and the risk of accident. To eliminate such phenomenon, a CAM die made by integrating five sets of die into one set of die and an automatic conveyor system were developed. As a result, unmanned work was realized with only two units of press and two sets of die; thus solving the problem of work being avoided and saving on manufacturing cost.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.11 no.12
• /
• pp.4787-4794
• /
• 2010

This study examined the effects of perceived service quality of dispatch companies on satisfaction and performance of user companies. The empirical investigation was conducted in human service sector. Service quality was classified into five dimensions: tangibles, reliability, responsiveness, assurance, and empathy. Data were collected from 80 employees of user companies. Results indicated that responsiveness and assurance were positively related to satisfaction of user companies. Results also indicated that tangibles, reliability, responsiveness, and empathy were positively related to performance of user companies. This study had differential value that it applied the concept of SERVPERF into the labor market, and analyzed its effects on customers' satisfaction and performance. The results also have consequences for managers responsible of outsourced workers.