• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.36 no.5 s.108
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• pp.36-43
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• 2004

The behaviors of deterioration in the mechanical and optical properties of paper during sunlight exposure are mainly attributed to UV irradiation. The effect of different additives (anti-UV agents) on paper properties during exposure was studied. The results showed negligible changes in the mechanical properties of samples prepared with two different ways, whereas the shielding ability was increased when the additives were applied to the surface of hand sheets. Also, the paper which is treated with anti UV agents can keep freshness more effectively of agricultural products from UV irradiation.

• Journal of Applied Reliability
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• v.15 no.1
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• pp.12-18
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• 2015

TRIZ is one of the most famous tools for creative problem solving. However, it is said that TRIZ is complicated and difficult to understand and apply to solve problems. In order to resolve these difficulties, this paper presents S-ARIZ, a simplified ARIZ(the algorithm for inventive problem solving). S-ARIZ revised ARIZ-85C on two ways. First, cause and effect analysis is used to define core technical contradictions and control parameters for the physical contradictions. Second, we add 5 inventive principles which revised SIT(systematic inventive thinking) partially to IFR-1 definition (Step 3-2 of ARIZ-85C) to solve the intensified technical contradictions systematically and effectively. It is expect that S-ARIZ can contribute to the rapid spread of TRIZ.

• Proceedings of the KSR Conference
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• 2004.06a
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• pp.645-651
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• 2004

For the connection of trans-continental railway network, it is critical to conquer the break-of-gauge problem at the borders in different countries. Up to now, the best solution seems to be the employ of the auto-changable gauge equipment. Countries, such as Russia, Japan are developing and commercializing auto-changable gauge equipment to maximize transport efficiency for the trans-continental network. The efforts to search a suitable logistical service are also underway. In this paper, technology and development trend of this equipment in several countries is indicated through inspecting and analyzing the historical and current situation of development, operating mechanism and technical problems. As the basic technology of auto-changeable gauge is not well developed in our country, the purpose of this study is to search an approach to fix the research direction, and find practical ways to international cooperation.

• Proceedings of the SCSK Conference
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• 2003.09a
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• pp.431-439
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• 2003

The problem of detecting individual differences of chemically similar liquids remains to be unsolved for various areas of the natural sciences, such as medicine, biology, nutrition, and cosmetics 1. This problem is of crucial importance for the cosmetic sciences, including perfumery and aromatherapy. For example, some certain subtle differences of smell and taste between chemically similar liquids are very difficult to detect by using conventional methods of analysis, such as gas chromatography (GC) and the like (except under unique advanced techniques that are expensive, time consuming, and are not readily available). However, a trained human nose and! or mouth of a perfumer and/ or taster can detect differences of that kind. There are two conventional ways to make a fragrance.(omitted)

• Proceedings of the Korean Geotechical Society Conference
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• 2006.03a
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• pp.1237-1244
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• 2006

This research discussed about method for basis construction of sea jacket construction. Several access ways of method for foundation construction of sea jacket construction are used. Accompany many efforts of design and build process to overcome the form of construction work and application equipment, special quality of construction and restriction and so on of sea environment in the case of pile foundation. Therefore, great many factor of sea condition, construction special quality, base condition, construction time, equipment composition, worker composition etc. shows other work form in spot at sea jacket construction process.

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.43 no.2
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• pp.72-76
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• 2011

Antimicrobial activities of the Acidic Liquid originated from Carbonized Rice Hull(ALCRH) and the paper treated with ALCRH were investigated to apply ALCRH to functional paper products as a natural antimicrobial agent. ALCRH showed antimicrobial activity for bacteria and yeast, with higher performance for bacteria than for yeast. Antimicrobial activity was not developed on paper coated with ALCRH by bar coater probably due to the evaporation of antimicrobial compounds of ALCRH from the paper surface with time. Saturation of paper with ALCRH was essential to develop antimicrobial activity on the paper. Dipping paper in ALCRH solution was recommended as one of the effective ways to make antimicrobial paper.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 1999.11a
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• pp.93-97
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• 1999

This paper describes an architecture platform and a key of features for a two-way pager system that will be commercially serviced in Korea, compares with it and other country's system, and analyzes the result. Also, 1 describes possible service features and new kinds of service for the two-way pager system. From the result of analysis, I presented a technical standard of radio quality for the two-way pager system.

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.32 no.5
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• pp.26-43
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• 2000

It is well accepted that gloss variation deteriorates the print quality and there are various objective ways to measure this. Several studies now have shown that the coefficient of variation in the octave band passed printed gloss image has an excellent correlation with ratings by an expert panel using a magnitude estimation scaling method. The correlation improves when the gloss level is also taken into account beyond that of the COV. There is also evidence that the correlation would improve even more if the gloss spatial distribution could be better accounted for. We show that much (at least 80% and perhaps up to 90%) of the gloss distribution can be accounted for by the paper topography over a wide range of dimensions (scale). Recent work has supported the role that microroughness and multiple surface scattering play in the gloss distribution. This offers the promise of showing that even a greater amount of gloss variationcan be explained by topography.

• Journal of the Speleological Society of Korea
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• no.75
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• pp.49-54
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• 2006

Electrophoretic Deposition (EPD) is the most convenient technology to deposit natural or oxide powders of nonconductive materials in alcoholic suspension solution with adding electrolyte of iodine to form ceramic thick film on metal substrate under applied electric field with double electric layer between electrode and metal substrate. In this research work, the important parameters and technical ways were studied to form EPD thick films of typical oxide ceramics of Al2O3, YBCO and tourmaline powders.

• Proceedings of the IEEK Conference
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• 2006.06a
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• pp.225-226
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• 2006

A service level agreement (SLA) is a formal contract between a service provider and a subscriber that contains detailed technical specifications called service level specifications (SLSs). In this paper, we propose SLA data analysis system which provides an effective decision-making information to network service provider. The SLA data analysis system executes trend analysis and statistics analysis using SLA violation and refund information. The analysis results are presented in many ways such as tables, graphs.