• Korean Security Journal
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• no.55
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• pp.143-167
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• 2018

According to the Security Services Industry Act security guards are not just workers but security-related service workers complementing the lack of police force and specializing in protecting of national important facilities, industrial facilities and apartment houses. Nevertheless, confusing or mixing the security service workers in "Security Services Industry Act" with the guards in the "Act on the Protection etc. of Temporary Agency Workers" lead to a constant debate about the scope of work of security guards. In the case of security service workers in "Security Services Industry Act" there is a strict limitations on security service worker's qualification such as strict reasons for disqualification, a need to pass training for new workers and qualification training, a need to report to the competent chief police officer if the security guard has placed or unplaced by the security service company. It distinguishes security service workers in "Security Services Industry Act" from the guards in the "Act on the Protection etc. of Temporary Agency Workers" and acknowledges the occupation of security service worker as a professional service worker. Therefore, security service workers in "Security Services Industry Act" shouldn't be obliged to do any other work than security work. If it is required to do other work than security work contract by the "Security Services Industry Act" doesn't apply but need to use a security guard according to "Act on the Protection etc. of Temporary Agency Workers" or hire a security guard on the employment contract. In this way, when security service workers in "Security Services Industry Act" are recognized as professional security related workers, the entire security industry can ultimately develop.

• The Journal of the Korea Contents Association
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• v.19 no.6
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• pp.575-586
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• 2019

In order to find out perception of group home for the people with disabilities worker on sexual behavior of adults with developmental disabilities in a holistic way, This study conducted in-depth interviews with six research participants using Giorgi's phenomenological study method to understand the meaning of perception of sexual behavior of adults with developmental disabilities. According to data analysis, these experiences appeared as two thematic themes: 'sexual trouble behavior' and 'perception of sexuality'. Two sub-themes of 'Excessive expression of sexual desire', 'Improper sexual behavior that can lead to sexual offenses' were derived from the essence theme of 'sexually problematic behavior' and 'perception of sexuality' were derived from the essence theme of 'lack of suitable solution', 'conditions that are not enough to have sex appeal', 'frustrated sexuality', 'some dilemma problem', 'sexuality that is not different from non-disabled', and 'love and sex are ok, pregnancy and marriage are no'. Based on this, group home caregivers contribute to their role as the main agents who reinforce and reproduce the sexual norms of adults with intellectual disabilities, while at the same time they experience confusion in their values about sexual norms of people with intellectual disabilities. Based on the results, We discusses the major intervention plan for education programs to enhance the competences of group home caregivers in order to form a holistic perspective of group home caregivers in sexuality of people with intellectual disabilities, and provide rational solutions.

• Journal of the Semiconductor & Display Technology
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• v.20 no.3
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• pp.57-64
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• 2021

The domestic semiconductor industry can produce various products that will satisfy customer needs by diversifying assembly parts and increasing compatibility between them. It is necessary to improve the production line as a method to reduce the work-in-process inventory (WIP) in the assembly line, the idle time of the worker, and the idle time of the process. The improvement of the production line is to balance the capabilities of each process as a whole, and to determine the timing of product input or the order of the work process so that the time required between each process is balanced. The purpose of this study is to find the optimal WIP and buffer size through SA (Simulated Annealing) that minimizes lead time while matching the number of two parts in a parallel assembly line with bottleneck process. The WIP level and buffer size obtained by the SA algorithm were applied to the CONWIP and DBR systems, which are the existing production systems, and the simulation was performed by applying them to the new hybrid production system. Here, the Hybrid method is a combination of CONWIP and DBR methods, and it is a production system created by setting new rules. As a result of the Simulation, the result values were derived based on three criteria: lead time, production volume, and work-in-process inventory. Finally, the effect of the hybrid production method was verified through comparative analysis of the result values.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.4 no.2
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• pp.168-179
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• 1994

In some ceramic industries, worker exposure to dust, crystalline free silica and lead were determined and evaluated. The conclusions are as follows. 1. Crystalline silica in bulk samples was 10.5 % in sanitary ware industry, 9.4 % in tile industry, and 2.1 % in ceramic insulator industry respectively. The free silica content of air filter sample was 8.03 % in table ware industry, 5.59 % in sanitary ware industry, and 1.32 % in ceramic insulator industry. Because silica content in ceramic dust is relatively high, it is should be considered silica as important factor in evaluating for ceramic industry. 2. The silica contents in dust from tile, sanitary ware and table ware industries are above 5%, it should be classified as "Type" 2 dust. 3. The airborne concentration of respirable crystalline silica was $27.9{\mu}g/m^3$ in a sanitary ware factory and $5.8{\mu}g/m^3$ in a ceramic insualtor factory. Three of ten samples sampled the above factories were exceeded the occupational exposure levels, $100{\mu}g/m^3$. 4. Geometric mean(GM) of total dust in 11 factories was $1.00mg/m^3$ and GM of respirable dust concentration in 5 factories was $0.33mg/m^3$. Sanitary ware industry had the highest concentration of total dust, $1.62mg/m^3$ and of respirable dust, $0.88mg/m^3$. 5. Average lead concentration in air was $0.05mg/m^3$ in glazing process of 2 factories manufacturing table ware. Five of ten sample(50%) were exceeded $0.05mg/m^3$. Therefore lead exposure in pottery industry should be considered as important problem.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.26 no.8
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• pp.102-106
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• 2012

This paper was carried out to survey fire hazard and improvement at the drain pump in air-conditioners. Based on the results of analysis, the proposal of electrical accidents prevention and a construction improvement are as follows. A power connection of the drain pump has two types, an electrical outlet type and direct connection type at control board of air-conditioner. The electrical outlet types need a bulletin sign or education as malfunction of the drain pump include an additional accidents, current leakage and overflowing with water on the floor from breaker trip by exterior cause and breaker off by mistake of worker. On the other hand, the direct connection types prevent a power interruption as exterior cause, but it has some trouble, cut of ground cable and without protection device. Usually it doesn't work by electrician when air-conditioner and the drain pump power work. Therefore an education or countermeasures are recommended for not electrician. Generally malfunction of the drain pump causes accumulated materials into the tank. Even though the accumulated materials lead to an overheating and burning as failure of detector occur an idling, periodic inspection of the air-conditioner filter and the drain pump tank prevent the trouble.

• Journal of Labour Economics
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• v.33 no.3
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• pp.1-23
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• 2010

Extension of mandatory retirement age (MRA) differs from other labor supply increases in that it induces a change in the incentive to save for retirement. A simple general equilibrium model indicates that extension of MRA can lead to a decrease in life-time income and social welfare as it excessively discourages domestic savings and thus capital accumulation. However, in an open economy where capital inflow allows capital input in production to remain constant despite lower domestic capital stock, extension of MRA likely increases worker welfare. In such case, extension of MRA can contribute to expansion of hiring demands through lowering wages or mitigating upward pressures on wages.

• Journal of Information Technology Applications and Management
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• v.17 no.3
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• pp.1-24
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• 2010

Most of enterprises depend on a data modeler during developing their management information systems. In formulating business requirements for information systems, they widely and naturally use the interview method between a data modeler and a field worker. But, the discrepancy between both parties would certainly cause information loss and distortion that lead to let the systems not faithful to real business works. To improve or avoid modeler-dependant data modeling process, many automated data design CASE tools have been introduced. However, since most of traditional CASE tools just support drawing works for conceptual data design, a data modeler could not generate an ERD faithful to real business works and a user could not use them without any knowledge on database. Although some CASE tools supported conceptual data design, they still required too much preliminary database knowledge for a user. Against these traditional CASE tools, we proposed a Requirement-Oriented Entity Relationship Model for automated data design tool, called ROERM. Based on Non-Stop Methodology, ROERM adopts inner systematic modules for complete and sound ERD that is faithful to real field works, where modules are composed of interaction modules with a user, rules of schema operations and sentence translations. In addition to structure design of ROERM, we also devise detailed algorithms and perform an experiment for a case study.

• Proceedings of the KSME Conference
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• 2003.04a
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• pp.968-973
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• 2003

As environmental restrictions have continuously become more strict, it has emphasized development of environment-friendly technologies. In cutting technology, it has been well recognized that cutting fluids might have undesirable effects on worker's health and working environment and, hence, recently there have been numerous attempts to minimize harmful effects of cutting fluids on environments. To minimize the use of cutting fluids in machining, conventional cutting fluids have been replaced with the technologies of pressurized cold air and minimum quantity lubrication(MQL). Compared with milling, turning is a continuous cutting process, where tools are continuously heated up and lack of lubricity could lead to tool wear and deteriorated surface roughness. In this study, it has been investigated how tool wear and surface roughness could be affected by cutting conditions, supply and cooling methods. The experimental results show that MQL technology is able to minimize harmful effects of conventional cutting fluids.

• Korean Journal of Health Education and Promotion
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• v.25 no.4
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• pp.13-28
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• 2008

Objectives: The purpose of this study was to assess general population' AIDS knowledge and attitudes towards AIDS. Methods: Using a multistage area sampling and random digit dialing method, a random sample of individuals aged 19-59 years, living in 16 different area in Korea during September 2007 were interviewed by telephone. Results: In all, 1,087 respondents completed the survey. In most items, respondents displayed a fairly good degree of knowledge about AIDS. However it was lower than that in developed countries. Respondents' attitudes towards AIDS were found to be negative. The knowledge and attitudes towards AIDS were more positive for respondents who were young, educated, office worker or students, higher in income. The higher level of knowledge, the more positive attitudes towards AIDS. Conclusions: In general AIDS related knowledge was relatively low and people showed negative attitudes towards AIDS. Incorrect knowledge and lack of information on AIDS would lead to unnecessary negative attitudes and there need to be addressed by health education programs and campaigns using mass media.

• Korean Journal of Health Education and Promotion
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• v.31 no.5
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• pp.97-107
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• 2014

Objectives: The purpose of this study was to examined the association between unemployment and suicidal ideation in Korea. Methods: We analyzed data from the Korean National Health and Nutrition Examination Surveys (KNHANES) IV, conducted in 2009. Statistical analysis methods used in this study were $x^2$-test, Hierarchial logistic regression analysis and other basic statistics using SPSS version 19.0. Results: The suicidal ideation of unemployment workers was 24.7% in male and 35.9% in female. After adjusting for sociodemographic characteristics and health-related characteristics, the risk for suicidal ideation of unemployment workers was significantly higher than employment workers. In men, the OR for suicidal ideation of the employed workers compared with the employed was 2.13, and in women, the OR was 1.31. Conclusions: The findings suggest the impact of unemployment status on suicidal ideation and the need for further prospective investigation that lead to interventions should be required to introduce of suicide prevention program for unemployment worker.