• Korean Journal of Child Studies
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• v.34 no.3
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• pp.75-92
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• 2013

This study investigated the differences and relationships between environmental print reading ability, vocabulary, and print concepts of children at ages 3 and 4. The subjects comprised 90 children, who could not read letters. The Children's Reading Ability of Environmental Print Scale(Son, 2012), Receptive and Expressive Vocabulary Test(Kim et al., 2009) and Concepts About Print(Kim & Kim, 2004) were used in this study. The collected data were analyzed using t-test and Pearson's correlations. The results of this study were as follows; in terms of Illiterate Korean children, aged 3 to 4 years, their scores on the environmental print reading tasks were positively correlated with vocabulary and print concepts.

• Korean Journal of Child Studies
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• v.33 no.5
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• pp.181-200
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• 2012

The purpose of this study investigate the differences in children's reading abilities of environmental print according to children's age and types of parental literacy interaction. The subjects comprised 111 illiterate children, 3 to 4 years of age, and their mothers. The Children's Reading Abilities of Environmental Print Scale (CRAEPS), Parent's Literacy Interaction Rating Scale (PLIRS) as developed by Son (2012) were used in this study. The collected data are analyzed by means of descriptive analysis, K-mean cluster analysis, Correlations, and two-way ANOVA. The results of this study are as follows : Illiterate Korean children, aged 3 to 4 years, can read environmental print which are familiar to them, and an 'open interaction style' plays an important role in developing the child's reading ability of environmental print. Therefore, in order to develop child literacy, it is necessary to research, not only teaching methods for using environmental print in the home, child care centers, and in kindergarten, but also parent education programs regarding the importance of the mother's literacy interaction style.

• Journal of the Korean Society for Library and Information Science
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• v.17
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• pp.85-103
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• 1989

The purpose of this second one of the two consecutive papers, which carried out for the research, is to evaluate their relative effectiveness regarding instruction with such three presentation methods as video/print+ lecture, print/video, print+lecture/video, with which the library of Duk Sung Women's University applied already for the orientation of the freshmen in 1988. In sum, the major research findings are as follows : First, as the more numerous media were applied for the orientation, the instruction were more effective. Second, it is very interesting to find out that there were wide differences in effectiveness among the three presentation methods applied for the student. Especially, the print+ lecture/video method was more effective in the instruction than the print/video method. Surprisingly, the video/print + lecture method was much more effective than the print+ lecture/video method. With the research findings of this two consecutive papers into consideration, it seems safe to say that the video-tape method was most effective among such three orienting methods as lecture, slide-tape, and video tape, and the video/print+lecture method was most effective among such three presentation methods as video/print+lecture, print/video, and print+lecture/video.

• The Journal of the Korea Contents Association
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• v.21 no.12
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• pp.331-336
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• 2021

Vacuum metal deposition(VMD) using gold and zinc is known as a very sensitive technique of developing latent fingerprints on nonporous surfaces by excellent malleability and ductility of gold. However, VMD produces empty print which cannot be identified. There is only presumption about the cause of occurrence of empty print, the exact cause is not known. In this study, we experiment on the freshness of fingerprints and sensitivity of techniques that are estimated as the factors causing empty print, based on this, we suggest cyanoacrylate fuming is effective to redevelop empty print.

• Proceedings of the Korean Information Science Society Conference
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• 2006.10a
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• pp.48-52
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• 2006

The palm print recognition is the most reliable authentication method in the biometrics. In this paper, using the efficient segmentation of the palm print region we propose the method of enabling the palm print recognition as the same method applicable to the finger print recognition. To achieve this, we propose the image processing procedures of the palm print segmentation and the feature extraction. We compare the matching result after extracting the features for the finger print and the palm print.

• Journal of the Korean Graphic Arts Communication Society
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• v.26 no.1
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• pp.29-38
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• 2008

Print-through is one of the most important attributes of print quality and has long been a subject to study. However, some aspects of print through are still in need to be enlighten. In this paper, different kinds of evaluating methods for print through are compared using densitometry, brightness, and image analysis. Printing conditions including ink feed, drying condition, and emulsification rate are systematically changed to effect print-through both on uncoated and coated commercial papers. Also several inks from different makers are introduced and compared in terms of print-through propensity. From the results, densitometry is not a good indicator for print through on the papers in this study. Ink feed has a strong effect on print through, especially for uncoated paper and should be considered in a point of optimum ink feed level in real world. Contribution of faster ink(oil) absorption seems to be more competitive than that of ink(oil) evaporation resulting in severer print-through for hot drying process. It is shown that ink-water emulsification rate increases print through at mild level but easy to decrease it with lower density due to the increase of water contents in emulsion. It is believed that the effect of absorption overwhelms that of density drop at mild emulsification level. This study does not include the effect of ink attributes in detail but shows that distinctive differences in print through may be resulted from various ink-makers and is finalized with some suggestions.

• The Korean Journal of Applied Statistics
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• v.18 no.1
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• pp.115-127
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• 2005

DNA microarray experiments allow us to study expression of thousands of genes simultaneously, Normalization is a process for removing noises occurred during the microarray experiment, Print-tip is regarded as one main sources of noises, In this paper, we review normalization methods most commonly used in the microarray experiments, Especially, we investigate the effects of print-tips through simulated data sets.

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.40 no.5
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• pp.60-69
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• 2008

The principal reasons for applying a pigment coating to paper are to improve appearance and printability. The pigment coating provides a surface that is more uniform and more receptive to printing ink than are the uncoated fibers and, in turn, both facilitates the printing process and enhances the graphic reproduction. The improvement in print quality is readily apparent, especially in image areas or when multiple colors are involved. Although pigment coating of paper is to improve the printability, coated paper is not completely free from printing defects. Actually there are a number printing defects that are observed only with the coated papers. Among the printing defects that are commonly observed for coated papers, print mottle during multi-color offset printing is one of the most concerned defects, and it appears not only on solid tone area but also half dot print area. There are four main causes of print mottle ranging from printing inks, dampening solution, paper, and printing press or its operation. These indicates that almost every factors associated with lithographic printing can cause print mottle. Among these variation of paper quality influences most significantly on print mottle problems in multicolor offset printing, and this indicates that paper is most often to be blamed for its product deficiency as far as print mottle problems are concerned. Furthermore, most of the print mottle problems associated with paper is observed when coated papers are printed. Uncoated papers rarely show mottling problems. This indicates that print mottle is the most serious quality problems of coated paper products. Overcoming the print mottle is becoming more difficult because the operating speeds of coating and printing machines are increasing, coating weights are decreasing, and the demands on high-quality printing are increasing. Print mottle in offset printing is caused by (a) nonuniform back trap of ink caused by a nonuniform rate of ink drying, referred as "back trap mottle, and (b) nonuniform absorption of the dampening solution. Furthermore, both forms of print mottle have some relationship to the structure of the coated layer. The surest way of eliminating ink mottling is to eliminate unevenness in the base paper. Coating solutions, often easier to put into practice, should, however, be considered. In this paper the principal factors influencing print mottle of coated papers will be discussed. Especially the importance of base paper roughness, binder migration, even consolidation of coating layers, control of the drying rate, types of binders, etc. will be described.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.24 no.9
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• pp.682-686
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• 2014

Nowadays, the needs to revise the classification criteria for noise emission facilities have been suggested by the related industries. Because there existed many reasonable factors in the criteria regarding the noise emission facilities. And the noise emission facility classification criterion of the print machine changed from 50 HP to 100 HP in 2013. But the increasement of the noise emission facility classification criterion of the print machine can cause adverse effects like the bigger noise. So, in this paper, we measured the print machine's sound power level according to the changes of the print machine's power to assess the adverse effects. The measurement method applied with KS I ISO 9614-2(1996). The corelation between the sound power level and the power of print machines was analyzed by regression analysis. In this paper, we found that the sound power level of the print machines can increase about 1.3 dB in the condition of that the power of print machine increases from 50 HP to 100 HP. And we found that the sound power level of the print machines can increase about 1.0 dB for a increasement of 1,000 SPH(sheet per hour) of printing speed. The noise emission characteristics of print machine stuied in this paper will be useful to design the noise reduction plan in the future.

• Proceedings of the KIEE Conference
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• 1998.07g
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• pp.2249-2251
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• 1998

This paper presents a lip print recognition by the pattern kernels for a personal identification. A lip print recognition is developed less than the other physical attribute that is a fingerprint, a voice pattern, a retinal blood-vessel pattern, or a facial recognition. A new method by the pattern kernels is pro for a lip print recognition. The pattern kerne function consisted of some local lip print p masks. This function identifies the lip print known person or an unknown person. The results show that the proposed algorithm the pattern kernels can the efficiently realized.