• Journal of Korea Society of Industrial Information Systems
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• v.28 no.6
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• pp.131-149
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• 2023

In light of the COVID-19 incident, organizations have recognized the importance of systematically managing knowledge resources to enhance work efficiency and performance within the organization. We have adopted the perspective of knowledge hoarding, which entails the ownership of individual knowledge, and aim to elucidate the underlying mechanisms that contribute to knowledge hoarding by considering the organizational environment, personal characteristics, and task characteristics. To test our hypothesis, we conducted a survey among employees working in companies that have implemented knowledge management policies or systems. We obtained a total of 381 samples, which were analyzed using AMOS 22.0 and Process 3.1 macros. Our findings reveal that distributive injustice leads to conflicts relationships and subsequently increases individual knowledge hoarding. Furthermore, we found that sensitivity to incentive interacts with distributive injustice, further exacerbating knowledge hoarding. Conversely, task interdependence mitigates knowledge hoarding by interacting with distributive injustice and relation conflict. These results contribute to the development of effective organizational knowledge management strategies aimed at curbing knowledge hoarding within the organization.

• Journal of Environmental Health Sciences
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• v.34 no.1
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• pp.34-41
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• 2008

The objective of this study is to provide the research data on the actual concentrations of $PM_{10},\;PM_{2.5},\;PM_1\;and\;CO_2$ in Seoul subway carriages. Mean concentrations of $PM_{10},\;PM_{2.5}\;and\;PM_1,\;and\;CO_2$ in subway carriages were investigated at levels of $215.1{\pm}101.4{\mu}g/m^3,\;86.9{\pm}38.6{\mu}g/m^3,\;27.0{\pm}11.4{\mu}g/m^3,\;and\;1,588{\pm}714ppm$, respectively. The mean concentrations in subway carriages were higher when the train ran on an underground track rather than on an above ground track. The measured concentration of particulate matter varied with the time of day and was highest in the morning, followed by noon and evening while the $CO_2$ concentration was highest in the morning, followed by evening and noon. In relation to correlation among the pollutants: the correlation between $PM_{10}\;and\;PM_{2.5}$ was 0.92, and that between $PM_{2.5}\;and\;PM_1$ was 0.94. The inclusion rate of $PM_{2.5}\;to\;PM_{10}$ was $41{\pm}7%$ and that of $PM_1\;to\;PM_{2.5}\;was\;32{\pm}4%$. In addition, the $CO_2$ concentration had a positive relation with the number of people in a carriage, whereas the concentration of $PM_{10}$ had negative correlation to the number of people. In relation to these two pollutants we calculated using a regression equation (34.06+0.04$CO_2$(ppm)-0.09 PM10$({\mu}g/m^3)$($R^2$=0.30, p<0.01, n=707), that a maximum number of 61 persons would ensure that each pollutant is maintained below the criteria level, applicable to subway stations.

• Proceedings of the Korean Society for Quality Management Conference
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• 1998.11a
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• pp.11-20
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• 1998

This study investigates the current situation of the ISO 9000 manufacturing industry in Taiwan, analyzing the business influence of ISO 9000 and the relation of the influence to industry-related characteristics. The study utilized polling and was approached from six aspects, using 26 indicator items to evaluate performance. The six approaches consisted of business management, finance management, production management, human resources management, marketing management, and a company's overall situation. Methods used to analyze the collected data were mainly drawn from descriptive statistics e.g.. the T test and analysis of single factors with variation. The study found that $96.6\%$ of the industry thought that the introduction of the ISO 9000 series was somewhat beneficial. The 26 indicator items among the six approaches were proved substantially effective by the T test. It was obvious that the effect of the ISO 9000 series industry standard was beneficial and helpful to the manufacturing industry.

• Journal of Korean Society for Atmospheric Environment
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• v.21 no.5
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• pp.515-524
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• 2005

In this study, the concentrations of major reduced sulfur compounds (RSC: $H_{2}S,\;CH_{3}SH$, DMS, $CS_2$ and DMDS) were determined from various emission sources of individual companies located within the Ban Wal industrial complex of Ansan city, Korea. We investigated the emission concentration levels of RSC from a total of 47 individual companies during June 2004 to January 2005. The results of our study indicate that the emission concentration levels of RSC vary in a highly complicated manner in relation with industrial sectors and emission source types. It was found that both $H_{2}S\;and\;CH_{3}SH$ make the highest contribution to nuisance in the leather industry. Likewise, DMS showed its maximum contribution from food production sector, while DMDS for chemical production sector. When the emission data sets were compared between different emission sources, regardless of industrial types or activities, $H_{2}S\;and\;CH_{3}SH$ concentrations were seen most significant at waste treatment process. The overall results of our study suggest that the emission concentrations of sulfur compounds can be used to distinguish different sources of malodor released by different industrial activities.

• Safety and Health at Work
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• v.12 no.2
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• pp.192-200
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• 2021

Background: A number of accidents have occurred in small and medium enterprises (SMEs). Efforts in reducing accidents have been undertaken through the implementation of safety behaviors. Unfortunately, few studies have examined motives behind unsafe behaviors, such as safety silence motives. This study aimed to observe the motives underlying safety behaviors, namely safety silence motive (SSM) (SSM-relation, SSM-climate, SSM-issue, and SSM-job) and to evaluate the effect of SSM and safety communication on safety participation in different industrial sectors and scales. Materials and Methods: Eighty workers from two industrial sectors and scales of SMEs were involved. They were instructed to fill out a set of questionnaires. A five-Likert scale was used to respond. An independent t test was applied to find any significant differences. The partial least square-structural equation modeling for multigroup was used to develop a model on relations among the variables. Results: The results showed that SSM scores were high in SMEs, and the scores were different across industrial sectors and scales. SSM had a negative influence on safety communication, and safety communication positively influenced safety participation. Conclusion: The study of SSM, safety communication, and safety participation in different sectors and scales should be separated in SMEs.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.1
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• pp.231-237
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• 2017

This study examines the relationship between voluntary information disclosure and the effective tax rate using Investor Relation (IR) as the proxy for the level of the firm's voluntary information disclosure, and effective corporate tax rate as the proxy for the level of tax avoidance. This study considers sample data from 1,396 firms listed on the Korea Composite Stock Price Index (KOSPI) from 2011-2014. The results of this study are as follows: Investor Relation (IR) had a positive correlation with effective corporate tax rate. This result got on with the result of additional analysis using extra measurement of effective corporate tax rate. According to these results, we expect that firms featuring greater voluntary information disclosure report enhanced business performance. This study contributes understanding how Investor Relation (IR) affects tax avoidance. We hope that this study can promote the development of capital markets and provide good news to investors for firms that have greater information disclosure.

• Journal of the Korean Society for Nondestructive Testing
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• v.19 no.5
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• pp.356-362
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• 1999

Based on the assumption that film density increases exponentially with exposure in the industrial radiographic film. an equation representing the characteristic curves of industrial radiographic films and a new density-thickness relation are suggested. The accuracy and reliability of the suggested relation has been tested using radiographs of a carbon steel step wedge with known thickness variation by polychromatic X-ray and ${\gamma}$-ray ($Ir^{192}$). The experimental results were well agreed to the proposed relation in the range of film densities from 1.0 to 3.5 and it was more accurate than the conventional relation. It is also found that ${\gamma}$-ray is more effective in this purpose than polychromatic X-ray, which results in variation of effective linear absorption coefficient due to beam hardening effect as thickness increases. Therefore using the equation and experimentally determined parameters the quantitative evaluation of thickness variation is possible and it can be used to evaluate the depth of local corrosion of pressure vessels in plants.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.6
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• pp.2780-2787
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• 2013

This research was conducted to find out the relation between sensory processing ability and Interpersonal Problem of university students. The subjects were 177 university students whose curricula were similar. The researchers made the subjects fill out the Adolescent/Adult sensory profile and Korean inventory of interpersonal problem(KIIP). The analysis of the relevancy between the Adolescent/Adult profile and the Interpersonal problem showed that 'Low Registration' is related to all aspects of KIIP. 'Sensation Seeking' showed relation with Domineering/Controlling(r=0.150, p<0.05), self sacrificing(r=0.175, p<0.05), Intrusive (r=0.218, p<0.01), Interpersonal sensitivity(r=0.196, p<0.01), and Need for social approval(r=0.149, p<0.05). 'Sensation Sensitivity' showed relation with all aspects of KIIP. 'Sensation avoiding' showed relatively high relation with Domineering/ Controlling(r=0.403, p<0.01), Vindictive(r=0.420, p<0.01), Interpersonal ambivalence (r=0.452, p<0.01), and aggression(r=0.417, p<0.01). Through this research, it turned out that 'Sensory Processing ability' and the Interpersonal Problem are generally related, especially 'Low Registration' and 'Sensation Sensitivity' are highly related to the Interpersonal Problem.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.36 no.4
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• pp.71-76
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• 2013

For a die casting mold, generally, the casting layout design should be considered based on the relation among injection system, casting condition, gate system, and cooling system. Also, the extent or the location of product defects was differentiated according to the various relations of the above conditions. In this research, in order to optimize the casting layout design of an automotive Oil Pan_DX2E, Computer Aided Engineering (CAE) simulation was performed with two layout designs by using the simulation software (AnyCasting). The simulation results were analyzed and compared carefully in order to apply them into the production die-casting mold. During the filling process with two models, internal porosities caused by air entrapments were predicted and also compared with the modification of the gate system and overflow. With the solidification analysis, internal porosities occurring during the solidification process were predicted and also compared with the modified gate system.

• International Journal of Quality Innovation
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• v.6 no.1
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• pp.35-42
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• 2005

The purpose of this paper is to clarify analytically the relation between the characteristics and the pricing of the products of individual manufacturers, so we can offer beneficial information for designing and developing products. Light trucks of 1 ton to 4 ton have been taken up as examples. We carried out analyses based on the information on the evaluations of the functional characteristics by surveying the specifications obtained from light truck catalogues.