• Journal of the Korean School Mathematics Society
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• v.9 no.1
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• pp.1-17
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• 2006

This thesis analyzed the effects of cooperative learning blended with TAI(Team Assisted Individualization) and STAD(Student Team Achievement Division) models on the students' ability of problem solving in mathematics in order to discover what kind of effects would give to their ability of that, and would promote their disposition and attitude to learn mathematics. The results of this study were as follows : First, the learning method blended with TAI and STAD models was more effective in the students' ability of problem solving in mathematics than traditional learning method because of the blended model's characteristics; positive interdependence, individual accountability, team recognition, curriculum materials. Second, the learning method blended with TAI and STAD models was more effective in sub-elements - self-confidence, adaptability, will, curiosity and value - of mathematical disposition than traditional learning method. And the learning method blended with TAI and STAD models was more effective in sub-elements - self-consciousness of mathematics and interests - of mathematical attitude than traditional learning method. In conclusion, the learning method blended with TAI and STAD models could affect to not only the students' ability of problem solving in mathematics but also the students' several affective factors.

• Journal of the Korean Society of Propulsion Engineers
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• v.14 no.2
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• pp.29-38
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• 2010

The experimental study on paraffin wax/LDPE blended fuel for hybrid rocket was performed. Various combustion characteristics of blended fuel were compared with pure paraffin, HTPB, HDPE and SP-1a fuel in order to evaluate the performance of blended fuel. The regression rate of lab-scale and large-scale motor using pure paraffin fuel was increased by 10.2 and 9.8 factor when respectively compared to that of HDPE. The regression rate factor of blended fuel was 3.4 in which the regression rate of blended fuel was higher than that of HTPB and HDPE, but lower than that of pure paraffin, SP-1a fuel. The values of characteristic velocity and specific impulse of blended fuel was higher than those of pure paraffin, HTPB and HDPE, and almost the same as SP-1a fuel. As these results, it was confirmed that blended fuel can be an effective solid fuel for hybrid rocket.

• Journal of the Korean Home Economics Association
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• v.48 no.5
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• pp.129-143
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• 2010

In order to improve the quality of student teachers' practicum, this study analysed the current situation of student teachers' field practice in child care centers. The study also assessed the practicum implementation case of H Cyber University. First, this research examined the characteristics of practicum implementation in universities. Second, a variety of strategies based on a blended model, on/off-line lectures, professor-student interaction, university-daycare centers collaboration, e-mentoring, and student teachers' portfolios that reduce the problems of student teachers' training, were explored. Finally, the practicum implementation case that adopted these factors was assessed. The results from this case study implied that student teachers' practicums based on a blended model can be an alternative method for problem-solving in existing student teachers' training in universities.

• Herbal Formula Science
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• v.11 no.2
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• pp.41-60
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• 2003

This report describes the studies as follows through the research into the data of Rhizoma Atractylodis japonicae blended prescriptions from Bang Yahk Hap Peun. The main pathologies of Atractylodis Japonicae blended prescriptions found chills, bowels, malaria, and they are used 18 disease also. In these prescriptions, the symptoms of chills and bowels are the most frequently used. Atractylodis Japonicae main blended prescriptions use in the symptoms of Sang Han Pyo syndrome, Sang Han Yin syndrome, and they are 25 disease also. Through the research, Atractylodis Japonicae main blended prescriptions are used the pathologes of wet, internal disease, the injury of the cold and wind, stomach and spleen. The actual amount of Atractylodis Japonicae blended has a wide capacity from 6 pun to 6 don, 1-2 don is broadlly used. The structures of Atractylodis Japonicae blended prescriptions are Pyong We San, Yi Myo San, Hyang So San, Warl Gook Hwan, Gook Chul Hwan, such as basic prescriptions are most used.

• Transactions of the Korean Society of Automotive Engineers
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• v.16 no.2
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• pp.175-182
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• 2008

In this study, a spark ignition engine operated with LPG and DME blended fuel was studied experimentally. Performance and emissions characteristics of a LPG engine fuelled by LPG and DME blended fuel were examined. Results showed that stable engine operation was possible for a wide range of engine loads within 20% mass content of DME fuel. Also, engine output power within 10% mass content of DME fuel was comparable to pure LPG fuel operation. Exhaust emissions measurements showed that hydrocarbon and NOx were increased with the blended fuel at low engine speed. Engine output power was decreased and break specific fuel consumption (BSFC) was severely increased with the blended fuel since the energy content of DME was much lower than that of LPG. Considering the results of engine output power and exhaust emissions, the blended fuel within 20% mass content of DME could be used as an alternative fuel for LPG.

• Korean journal of food and cookery science
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• v.28 no.5
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• pp.579-588
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• 2012

This study was tested the effects of the addition of blended wasabi juice on the quality characteristics of the soy sauce seasoned chicken meat at $4^{\circ}C$ for 12 days. The proximate analysis on the blended wasabi juice (w/w) showed 76.55% water, 4.15% crude protein, 0.58% crude fat, and 1.31% ash. There was no significant differences in the pH of the samples. The lightness ($L^*$) and yellowness ($b^*$) increased in proportion to the increased amount of the blended wasabi juice, but the redness ($a^*$) tended to decrease. The volatile basic nitrogen (VBN) was lower with the increased addition of the blended wasabi juice. The level tendencies in the salinity and water-soluble solids decreased with increasing amount of the blended wasabi juice added, but the difference was not significant. The total counts of viable cells and coliforms were lower in the juice-treated groups. In the preference test of the samples, the seasoned chicken breast with 2% blended wasabi juice was the most preferred in the overall acceptability, color, saltiness, sweetness, flavor, and texture.

• Journal of the Korea Concrete Institute
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• v.20 no.4
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• pp.439-449
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• 2008

Mineral admixtures are used to improve the quality of concrete and to develop sustainability of concrete structures. Supplementary cementitious materials (SCM), such as silica fume (SF), granulated blast furnace slag (GGBS) and pulverized fly ash (PFA), are gradually recognized as useful mineral admixture for producing high performance concrete. The study on ternary blended concrete utilizing mainly three major mineral admixtures is limited and the study on durability and chloride induced corrosion resistance of ternary blended concrete is very few. This study examines the durability characteristics of the ternary blended concrete composed of different amount of the SCM with ordinary Portland concrete and the study experimentally focuses on corrosion resistance evaluation of ternary blended concrete subjected to chloride attack. In this study, 50% replacement ratio of mineral admixture to OPC was used, while series of combination of $20{\sim}40%$ GGBS, $5{\sim}15%$ SF and $10{\sim}45%$ PFA binder were used for chloride corrosion resistance test. This study concerned the durability properties of the ternary blended concrete including the corrosion resistance, chloride binding, chloride transport and acid neutralization capacity. It was found that the ternary blended concrete utilizing the SCM densified the pore structures to lower the rate of chloride transport. Also, increased chloride binding and buffering to acid were observed for the ternary blended concrete with chlorides in cast.

• Journal of the Korean Society of Costume
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• v.52 no.5
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• pp.145-154
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• 2002

1. The blended tabby whose warp and weft each employs a different kind of thread had been weaved since the era of the Three Kingdoms in this nation and since the period of Han in China. Especially in the 15th century. very finely weaved fabrics as the specialty of Chosun were exported to China. In the 16th century. blended tabby weaved with silk and cotton were often used for clothes as cotton was produced around the nation. And in the 17th century. blended tabby employing high quality Chinese raw silk other than existing ones were weaved. 2. It has been found in literature review that Honpo, one of Chosun's blended tabby. was manufactured mainly in Hamkyung, Cholla and Kyungsang provinces and mostly distributed through markets of Chungchong and Cholla provinces. 3. Out of the total 19 fabric pieces. 13 employed silk thread as the warp and cotton thread as the weft. Compared with the weft. in general. the warp is given more tension when weaved and more friction by spindles, being more likely to be twisted than the weft. In addition to starching, a stronger thread is requested as the warp. It is natural that in the Chosun period, silk thread more stronger than cotton thread was used as the warp to make more durable fabrics. For the weft requiring lots of threads when weaved. cotton thread was mainly used in the 17th century because the thread could be easily obtained at that time. 4. So far the study has made an empirical review of Chosun's blended tabby. especially those of the 15th∼17th century, in terms of their production and distribution. Findings from the study have some limit because they have been made focusing on the 15th∼17th century not the whole period of Chosun. Therefore it is needed to complement those findings through further studies.

• Herbal Formula Science
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• v.10 no.1
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• pp.41-55
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• 2002

There are total 403 prescriptions containing Radix Scutellariae in Donguibogam and among them, 106 prescriptions treat Radix Scutellariae as a principal medicine. This report describes the study on therapeutic range, symptom, pathology and composition of 106 Radix Scutellariae-main blended Prescriptions from Donguibogam. The frequency and percentage of Radix Scutellariae-main blended prescriptions for the therapeutic range are as follows; cold symptom-complex is the most frequent(11 prescriptions, 10.37%) and gynecology is second(10 prescriptions, 9.43%). The symptoms that Radix Scutellariae-main blended prescriptions are made out for are 70 prescriptions of 28 therapeutic ranges, for example, minor Eum physical appearance, fire of triple burners jaundice, etc. The main pathologies that Radix Scutellariae-main blended prescriptions are being affected by cold, fire triple burners, dampness and heat, wind and heat, heat of heart and lung, heat of liver, heat of spleen, etc. Through the research into the composition of Radix Scutellariae-main blended prescriptions, the kind of medicines and certain rules of compounding medicines centering on Radix Scutellariae are deduced as follows: The main combinations of herbal medicines are Radix Scutellariae and Fructus Gardeniae, Radix Scutellariae and Rhizona Rhei, and Radix Scutellariae, Rhizona coptidis and Fructus Gardeniae. The main combinations of prescriptions are Yihwanghwan(Radix Scutellariae, Rhizoma Cotidis, Radix Glycyrrhizae), Boanbaekchulsan(Radix Scutellariae. Rhizoma Atractylodis macrocephalae), Sambohwan(Radix Scutellariae, Rhizoma Cotidis, Cortex Phellodendrj), Samhwangwon(Radix Scutellariae, Rhizoma Cotidis, Rhizoma Rhei), Hwangryeonhaedoktang(Radix Scutellariae, Cortex Phellodendri, Rhizoma Cotidis. Fructus Gardeniae), Daegumhwahwan(Radix Scutellariae, Rhizoma Cotidis, Cortex Phellodendri. Rhizoma Rhei). Sanyeolumja(Radix Scutellariae. Rhizoma Cotidis. Radix Osterici koreani. Radix Ledebouriellae), etc.

• The Journal of the Korea Contents Association
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• v.17 no.12
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• pp.330-338
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• 2017

The purpose of this study is to examine the effect of blended learning approach on academic achievement and self directed learning skills of nursing undergraduate students. This experimental study is designed for a nonequivalent control group. The number of subjects in this research consists of 145, where 75 of the experimental group participated in blended learning program and 70 of the control group didn't do. The data was analyzed by $x^2$-test, Fisher's exact test, t-test and paired t-test. The effects of blended learning approach on learning outcomes in women's health nursing are as follows : The academic achievement of the experimental group has been more elevated than that of the control group on final examination. The experimental group has made increase in self directed learning skills. The blended learning approach on learning outcomes in nursing major are effective. This study has significant implication in that it identified the availability of the blended learning program and that it would be a useful teaching and learning method to achieve learning outcomes.