• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.36 no.2
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• pp.70-76
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• 2004

The pallet loading pattern and efficiency were analyzed on the packaging boxes for agricultural products. Also, the pallet layout chart was proposed as a convenient tool in selecting the suitable packaging dimensions for them. By researching the layout pattern and maximum number of agricultural products in the packaging box, we can choose the efficient box dimension.

• 한국정보디스플레이학회:학술대회논문집
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• 2005.07a
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• pp.805-807
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• 2005

A basic assessment is presented of the technical, economic and strategic challenges expected for manufacturing displays in a roll-to-roll format. Two general pathways are considered; one that results in dramatic cost reductions but results in sacrificing product performance, and another which is an extension of the conventional FPD cost-reduction from increased substrate size. While Roll-to-Roll fabrication is fundamentally possible, feasibility experiments will be required to address the most significant technical challenge: achieving and managing acceptable yield. In all respects, the efforts to achieve RTR manufacturing will be assisted by overlapping interests in other application areas such as flex circuit, photovoltaics and large area lighting.

• Journal of the Korean Professional Engineers Association
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• v.34 no.3
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• pp.22-27
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• 2001

About 70% -80% of the serious injury that occure in the chemical product small manufacturing industries is caused by human error. but technical development for analysis and inspection to preestimate and exclude such human error is still insufficient. Small - to - medium sited enterprises are economically vulnerable and technical foundations for safety management is week Under such circumstances development of easy to use computerized support programs that can be operated without the help of professioanals are keenly needed.

• Journal of Digital Convergence
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• v.18 no.2
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• pp.205-211
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• 2020

The method of predicting the future may be predicted by technical characteristics or technical performance. Therefore, technology prediction is used in the field of strategic research that can produce economic and social benefits. In this study, we predicted the future market through the study of how to predict the future with these technical characteristics. The future prediction method was studied through the prediction of the time when the market occupied according to the demand of special product. For forecasting market demand, we proposed the future forecasting model through comparison of representative quantitative analysis methods such as CAGR model, BASS model, Logistic model and Gompertz Growth Curve. This study combines Rogers' theory of innovation diffusion to predict when products will spread to the market. As a result of the research, we developed a methodology to predict when a particular product will mature in the future market through the spread of various factors for the special product to occupy the market. However, there are limitations in reducing errors in expert judgment to predict the market.

• Journal of Korean Clinical Health Science
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• v.4 no.4
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• pp.762-768
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• 2016

Purpose. This study was performed on survey related optician's perception of NCS and required jobs to develop curriculum of department of ophthalmic optics Methods. This study was to evaluate the questionnaire survey of 63 opticians working in Optometrist in Daegu Metropolitan City from November 1, 2016 to November 18, 2016. Results. As for the opticians who know about NCS, 23.8% of the respondents answered that the opticians' perception of NCS is very low. For the four required jobs of the technical part, less than 5 years of optometrists ; optometry 73.7% > fitting 47.4% > ophthalmic dispensing 36.8% > lensmeter 5.3%, more than 5 years and less than 10 years of optometrists ; optometry 84.6% > fitting 53.8% > lensmeter 46.2% > ophthalmic dispensing 38.5%, more than 10 years of optometrists ; optometry 67.7% > ophthalmic dispensing 51.4% > lensmeter 19.4% > fitting 16.1%. For the four required jobs of the management, less than 5 years of optometrists ; product 57.9% > service 47.4% > manners 10.6% > sales 5.3%, more than 5 years and less than 10 years of optometrists ; service 76.9% > product 53.9% > manners 46.2% > sales 38.5%, more than 10 years of optometrists ; service 45.2% > manners 42.0% > product 32.3% > sales 19.4%. Conclusions. Although there were 108 required jobs of the technical part and 94 required jobs of the management part, the technical level of the department of ophthalmic optics was satisfactory, but the classes of the management part were insufficient. It will be necessary to actively reflect the needs of industry through curriculums reform.

• The Journal of the Korea Contents Association
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• v.12 no.12
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• pp.135-145
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• 2012

This study is a research development case study on the free-standing Network based camera video recording DVR. The DVR devices till now have recorded data by converting and compressing analogue video to digital, but in the future, digital videos will be recorded directly through the network camera. Also, digital compressing methods are progressing from MPEG-4, MJPEG, to H.264 method, with products considering high definition compression efficiency, minimized data size, network compatibility, and fast pending time. According to this, in 2012, it is predicted that network camera and video devices throughout the world will outrun the current analogue devices. With this transition of technological environment and fast product pending speed, a new, quality focused design is required for product development including technical realization, reliability, high-definition, compression technology, will be essential. Manufacturers are researching a new direction for the product appearance. This study considers the actual end-users as the design target and through consumer survey on preferences, design needs and required elements necessary in the design development process are extracted. Furthermore, usability and preferred images were explored through literature study and market research. Through this research process, appropriate forms for the network based DVR were analyzed, and applied into the design development process. This product will take into consideration its competitiveness and the significance of USP(Unique Selling Proposition) which is the design supremacy and professional technical skills.

• Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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• 2000.04a
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• pp.71-71
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• 2000

Recycled fibers usually give slow drainage in the paper forming zone on papermachine, which limit the application of more refining to the fibers for improving paper strength and formation. To use recycled fibers, especially, OCC, more effectively, developing very efficient handling technique of short fibers and fines is inevitable. We tried to make hard flocs of fractionated short fibers and fines, which were the main cause of slow drainage, by adding excessive amount of retention aid on them. This technique was proved to increase drainage with no difference in strength properties, compared to the conventional technique of adding the same amount of polymers to the whole furnish in the lab test. The bonding capability of short fibers and fines in Korean OCC were very poor to be considered as ´fillers´in paper products. Various chemical treatment on the short fibers and fines of the Korean OCC did not improve their bonding and optical properties. One of the reasons of no improvement in their properties was thought to be their high amount of ashes (over 30% in the fractionated samples).

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2012.06a
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• pp.110-112
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• 2012

Education and training of technical staff for the new generation technological equipment has a vital importance for developing countries in order to maintain sustainable development and keep up with new generation technologies. Mechatronics the synergistic combination of mechanical, electronic and software engineering from an engineering perspective to serve the purposes of controlling advanced hybrid systems is a product of new generation technology which can be given as a sample to this phenomenon. Recent marine engines are combination of heavy industry with high technology. Nowadays, ships are built in full automation and equipped with computer controlled mechatronics systems. However, finding qualified officer and engineers who can operate, maintain, control and repair when it is required such full automatic systems with knowledge of a new generation system became a serious issue. Due to importance of this fact STCW Manila amendment has new training and certification requirements for electro-technical officers. In this paper, Mechatronics applications on ship are introduced, importance of it highlighted and a new syllabus is proposed for the training of marine engineers to be nurtured with mechatronics knowledge as it is required.

• Journal of Environmental Health Sciences
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• v.35 no.6
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• pp.510-516
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• 2009

Polybrominated diphenyl ethers (PBDEs) and polychlorinated biphenyls (PCBs) were measured in soil samples of Ansung in Kyonggi-province to investigate concentration distribution of PBDEs and PCBs. The 10 soil samples were collected using a stainless steel hand-held corer that was cleaned before and after each sample using hexane. Total concentration of PBDE and PCBs were 2,205.3 and 348.1 pg/g dry weight (DW) in soil sample, respectively. BDE-209 showed as the most abundant congener in soil samples which was related to imported amount and usage amount of deca-BDE technical mixture in Korea. Also, BDE-99, BDE-47, BDE-100 deposition in soil sample was higher than other congeners and was related to the imported and usage amount reported for penta-BDE technical mixture in Korea. Correlation coefficient between PBDE contribution and technical mixture formulation (Bromokal 70-5DE) were significant (r=0.91, p<0.01) which suggests the influence of sources in this technical mixtures.

• The Pure and Applied Mathematics
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• v.4 no.1
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• pp.27-33
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• 1997

Let (M = B$\times$f F, g) be an ($n \geq3$ )-dimensional differential manifold with Riemannian metric g. We solve the following elliptic nonlinear partial differential equation (equation omitted). where $\Delta_{g}$ is the Laplacian in the $\Delta$g-metric and ($h(\chi)$) is the scalar curvature of g and ($H(\chi)$) is a function on M.