• Proceedings of the Korea Information Processing Society Conference
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• 2000.10a
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• pp.555-558
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• 2000

소프트웨어 프로세스 능력 수준에 영향을 미치는 요인을 찾아내어, 강점은 격려하고 약점을 개선하는 프로세스 개선활동은 기업의 경쟁력 향상을 위하여 매우 중요한 일이다. 본 연구에서는 이러한 요인을 찾아내기 위하여 SPICE(ISO/IEC 15504) 프로젝트에서 국제적으로 실시된 소프트웨어 심사 결과를 이용하였다. 분석 요인으로 IT부서 사원수, ISO 9001 인증여부, 안정성, 경제적 손실도, 보안성, 환경 영향도를 사용하였으며, 본 자료가 범주형이므로 분석 방법으로 통계적인 방법론인 "수량화방법 II"를 이용하였다. 수량화방법 II에서는 요인의 중요도를 나타내는 지표로 범위와 편상관을 사용한다. "범위"를 지표로 할 경우, 보안성이 능력수준과 가장 높은 관련이 있는 것으로 나타났으며, "편상관"을 지표로 할 경우, ISO 9001 인증이 가장 관련이 높은 것으로 나타났다. 이는 보안성이 높게 요구되는 회사의 경우, 품질시스템이 잘 갖춰져 있고, ISO 9001 인증을 받는 둥의 품질관리를 하여 프로세스 능력수준 또한 높게 나왔다고 추론할 수 있다.

• Clean Technology
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• v.28 no.3
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• pp.203-209
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• 2022

An environmental evaluation was conducted by employing LCA methodology for a mechanical seal manufacturing process that uses recycled silicon recovered from end-of-cycle PV modules. The recycled silicon was purified and reacted with carbon to synthesize β-SiC particles. Then the particles underwent compression molding, calcination and heat treatment to produce a product. Field data were collected and the potential environmental impacts of each stage were calculated using the LCI DB of the Ministry of Environment. The assessment was based on 6 categories, which were abiotic resource depletion, acidification, eutrophication, global warming, ozone depletion and photochemical oxidant creation. The environmental impacts by category were 45 kg CO₂ for global warming and 2.23 kg C₂H₄ for photochemical oxide creation, and the overall environmental impact by photochemical oxide creation, resource depletion and global warming had a high contribution of 98.7% based on weighted analysis. The wet process of fine grinding and mixing the raw silicon and carbon, and SiC granulation were major factors that caused the environmental impacts. These impacts need to be reduced by converting to a dry process and using a system to recover and reuse the solvent emitted to the atmosphere. It was analyzed that the environmental impacts of resource depletion and global warming decreased by 53.9% and 60.7%, respectively, by recycling silicon from end-of-cycle PV modules. Weighted analysis showed that the overall environmental impact decreased by 27%, and the LCA analysis confirmed that recycling waste modules could be a major means of resource saving and realizing carbon neutrality.

• Journal of the Korean Society for Railway
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• v.17 no.3
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• pp.178-185
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• 2014

This study investigates the characteristics of environmental impact from the construction phase of a high-speed railway through a Life Cycle Assessment method based on the materials used and the energy consumption of the equipment used according to the design statement. The results reveal that the contributions to environmental impact in the construction sector of a high-speed railway were 89% for civil engineering, 7% for the track system, 2% for stations and 2% for the energy and telecommunication system. In particular, the highest contribution to the impact in the civil engineering category were 54% for Global Warming, 25% for Abiotic Resource Depletion and 8% for Photochemical Oxidant Creation. The main influence factors were the use of remicon and cement. In future, the application of Life Cycle Assessment for the construction sector of railway construction will introduce efficient reduction methods according to the quantitative calculation of environmental impact.

• Journal of the Korean Wood Science and Technology
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• v.43 no.6
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• pp.810-817
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• 2015

This study was conducted to evaluate the pressure treatment characteristics of yellow poplar skin timber with ACQ-2, CUAZ-3, and CuHDO-1. The effect of moisture content (MC) on treatability was investigated, and fixation characteristics of copper-based preservatives were also evaluated. Sapwood of yellow poplar, which was dried below 50 percent MC, was fully penetrated with preservatives, and minimum requirement of preservative retention for the hazard class H3 was achieved. Through measuring retention gradient in yellow poplar sapwood, it was confirmed that minimum requirement of preservative retention for the hazard class H3 was achieved in the assay zone from the surface to 15 mm-depth when the specimens were dried below 30 percent MC. Yellow poplar heartwood did not meet the minimum requirement of penetration and retention for the hazard class H3 over the range of pretreatment MCs tested. The fixation rate of copper was much faster under drying condition compared with nondrying condition; more than 90% of copper were fixed in 3 weeks at $21^{\circ}C$ under drying conditions.

• The Journal of the Convergence on Culture Technology
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• v.6 no.4
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• pp.527-533
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• 2020

The purpose of this study is to explore the experience of graduates' career success who actively participated during their school days. The experience of participation in education has been explored from three perspectives: input, environment, and output. The first factor which is the input includes the admission process, motivation for application, and methods of appropriating tuition fees. The second factor which is the environment includes the interrelationships with both in and out of school activities, in-class activities, and in-college members. Lastly, the output factor of university education includes the results of university education and the perception of social advancement. The subjects of the study were 21 students who succeeded in entering society based on their goals. The interviews and surveys were conducted, and the factors affecting their career success were analyzed by dividing them into three upper categories and each category is to create implications for the future direction of university education.

• Korean Journal of Construction Engineering and Management
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• v.16 no.3
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• pp.24-35
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• 2015

Aging educational facility shall be managed and maintained through integrated service perspectives, in consideration of functions of each facility to provide safe and comfortable environment, rather than temporarily fixing/repairing problems. For doing this, it is a must to firstly understand the limitation of highly biased performance-based maintenance practice, which is a most common type applied at present, and therefore to establish maintenance system that reflects the functions and characteristics of maintenance service that a facility was designed with. Therefore, the objective of this study is to find items that have an influence on service level recognition in order to fairly evaluate service functions of educational facilities, and subsequently to use these factors as ingredients of establishing a consistent and efficient maintenance system. Therefore this study proposed explanatory variables to measure influential factors for each major maintenance category. Then appropriate statistical verification was carried out on questionnaires that collected from a number of industry experts to test its fe asibility.

• Journal of Wetlands Research
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• v.23 no.1
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• pp.27-34
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• 2021

In this study, the main influencing factors of the occurrence of cyanobacteria at each of the eight Multifunctional weirs were derived using a random forest, and a categorical prediction model based on a Algal bloom warning system was developed. As a result of examining the importance of variables in the random forest, it was found that the upstream points were directly affected by weir operation during the occurrence of cyanobacteria. This means that cyanobacteria can be managed through efficient security management. DO and E.C were indicated as major influencers in midstream. The midstream section is a section where large-scale industrial complexes such as Gumi and Gimcheon are concentrated as well as the emissions of basic environmental facilities have a great influence. During the period of heatwave and drought, E.C increases along with the discharge of environmental facilities discharged from the basin, which promotes the outbreak of cyanobacteria. Those monitoring sites located in the middle and lower streams are areas that are most affected by heat waves and droughts, and therefore require preemptive management in preparation for the outbreak of cyanobacteria caused by drought in summer. Through this study, the characteristics of cyanobacteria at each point were analyzed. It can provide basic data for policy decision-making for customized cyanobacteria management.

• Journal of Internet Computing and Services
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• v.11 no.1
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• pp.183-193
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• 2010

For the purpose of enhancing performances, many companies have tried to ensure the competitive advantages in ties with organization's strategy by putting effort in designing, developing and practicing the information system. Despite the information oriented small and medium enterprises (SME) being suffered from lack of funds, professional man-power and poor environment, fairly evaluating the level of information system within an organization can be a positive starting point for information oriented SME. Therefore in this study, for the purpose of using the SERVQUAL as a measurement tool provided by information system department under the environment of using information system, we try to free from the marketing oriented service category and develop models that are applicable in the information system environment to check reliability and validity. As a result, it is analyzed that enhancements of SERVQUAL simultaneously improves system and information quality which makes the employees satisfy with their working environments and sequentially affects to the collaborative performance of using information system.

• Journal of The Korean Association For Science Education
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• v.22 no.4
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• pp.892-905
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• 2002

There are an increasing emphasis on affective domain, for example interest or belief, in science education. But decreasing interest on learning science and tendency to avoid science-related job are serious problems of secondary science education, especially in case of vocational high school students. However there are few researches for vocational high school students. In this study, preference for science is assumed to be a multidimensional property that reveals ones' behavioral volition and valuation as well as emotional response upon learning science. To investigate vocational high school students' preference for science and its causal factors, a Likert style questionnaire was developed through factor analysis. Students' preference for science was analyzed by 3 categories, and its causal factors are investigated by path analysis using structural equation model.

• Resources Recycling
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• v.32 no.2
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• pp.43-51
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• 2023

In this research, through LCA analysis, the environmental impact of automotive engine manufacturing and re-manufacturing was analyzed from the perspective of the entire process, and the greenhouse gas reduction effect was calculated based on this. The amount of greenhouse gas emitted from the process of acquiring and manufacturing raw materials for automotive engines is about 3,473 kg for new manufacturing and 872 kg for re-manufacturing. Thus, the amount of greenhouse gas reduction by engaging in re-manufacturing is about 2,601 kg; the analysis shows a reduction effect in each part of the entire process except for the processing stage. As a result of the LCA weighted analysis, the environmental impact of new product manufacturing was found to be 1.07E+03 Eco-point, and it was 2.67E+02 Eco-point for re-manufacturing. The share of GWP(Global Warming Potential) among the six major impact categories(Abiotic Depletion Potential, Acidification Potential, Eutrophication Potential, Global Warming Potential, Ozone-layer Depletion Potential, Photochemical Oxidant Creation Potential) as high at 99.72%(new manufacturing) and 99.68%(re-manufacturing).