• 한국수정란이식학회지
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• 제10권1호
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• pp.23-31
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• 1995

Several kinds of analytic methods for genetic polymorphism in cattle, including bovine blood typing, PCR-RFLP, BoLA and microsatellite typing were described. A few respect to consider for choosing method for actual application of genetic polymorphism were emphasized. The probability of relationship between characteristics and gene concerned, repetibility and easiness of methods applied and the possibility of clarification for segregation pattern should be deliberated.

• Advances in concrete construction
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• 제9권6호
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• pp.589-596
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• 2020

In an effort to find alternate, environment friendly and sustainable building materials, the scope of possible utilization of iron slag (I-sand), generated as a by-product in iron and steel industries, as fine aggregates in reinforced cement concrete (RCC) made with manufactured sand (M-sand) is examined in this manuscript. Systematic investigations of the physical, mechanical, microstructural and durability properties of I-sand in comparison with RCC made with M-sand have been carried out on various mix designs prepared by the partial/full replacement of I-sand in M-sand. The experimental results clearly indicate the possibility of utilizing iron slag for preparing RCC in constructions without compromising on the property of concrete, durability and performance. This provides an alternate possibility for the effective utilization of industrial waste, which is normally disposed by delivering to landfills, in building materials which can reduce the adverse environmental effects caused by indiscriminate sand mining being carried out to meet the growing demands from construction industry and also provide an economically viable alternative by reducing the cost of concrete production.

• 한국콘텐츠학회논문지
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• 제12권7호
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• pp.483-496
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• 2012

본 연구에서는 스마트러닝 환경에 맞는 교수 학습 도구로써 3D 콘텐츠 제작 및 활용이 가능한 3D 기반 소프트웨어를 대상으로 교수 학습 적용 방안을 모색하였다. 그리고 그 현장 적용 가능성을 탐색하기 위하여 스마트스쿨에 시범 적용을 실시하였다. 시범 적용 후 학생들을 대상으로 학습만족도 검사를 실시하였으며, 교사를 대상으로 일대일 면담을 통한 현장 적용 가능성 평가를 실시하였다. 그 결과 다양한 교과에서의 교수 매체, 동기유발 자료 제시, 개인 및 모둠별 발표 도구, 학습 부진아 및 영재 교육을 위한 교수매체로써의 활용 가능성에 대해 긍정적인 결과를 도출할 수 있었다.

• 한국식품과학회지
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• 제18권3호
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• pp.221-225
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• 1986

소시지 배합시에 부산물의 사웅가능성을 Linear Programming에 의해 조사하였다. 원료육 중류만을 고려하여 8가지의 제한조건 조합((1)수분 및 고기함량, (1)+염통, (1)+내장육, (1)+머리고기, (1)+염통+등지방, (1)+염통, 十 내 장육,(1)+ 염통 + 머리고기 . (1) + 염통+머리고기+등지방)에 의해 최소가격 배합을 시도하여 본 결과. 현실적으로 가장 경제적인 배합은 수분 및 고기함량과 염통 및 내장육 사용을 고려한 것으로 나타났다. 등지방의 사용을 고려하였을 경우가 가장 비싼 배합비를 초래하였다. 그러나 이러한 결과는 국내 규정에 제한이 없는 식물성 단백질 등 결착제 및 증량제를 첨가할 경우에 달라질 수 있다.

• 무역학회지
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• 제47권1호
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• pp.199-214
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• 2022

This study aims to quantify the value of origin among CPTPP and Korea, under the assumption that the 'cumulation' clause has large economic effects in multilateral FTAs and increase the possibility of improving FTA utilization. Analysing the relationship between value-added exports and FTA utilization rate, there is a positive correlation between the two variables, and the cumulation of multilateral production of CPTPP is expected to increase Korea's value-added exports. In the GTAP-VA model, the target of cumulation is calculated as 'Domestic Value Added', and all value-added of CPTPP are cumulated in the form of value added exports of exporting country. When Korea participates in CPTPP, it is possible to cumulate additional 6.3~9.6% value added, and the agreements with low FTA export utilization rates such as New Zealand, ASEAN would have greater economic effects of cumulation. For the successful implementation of CPTPP in Korea, it is necessary to develop a new origin verification system that enables multilateral value-added cumulation. It is time to seek cooperation with countries currently participating in CPTPP to prove the value added inherent in CPTPP-originating products.

• 한국초등과학교육학회지:초등과학교육
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• 제24권2호
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• pp.160-173
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• 2005

In this study, we had tried to present a plan for improving the actual conditions of practical utilization of teaching material for 6th grade science developed by Ministry of Education & Human Resources Development and distributed to all elementary schools in Korea. Also we presented ways of better utilization of the teaching material after investigating the actual conditions of practical utilization. A survey was made to investigate and collect all data in the major metropolitan cities, the Kangwon, Chungcheong, Honam, and Kyeongsang area, respectively. We surveyed 316 6th grader teachers to investigate the actual conditions of distribution and utilization of teaching material as a general research. In addition, we surveyed 46 teachers to investigate the organization and content of teaching material as a particular research. The results are as follows. First, the teaching material was not approximately transmitted and kept to 6th grader teachers. Second, the utilization guide was not made. Third, it was reported that the thematic divisions of teaching material was a strong point, but the less detailed experiment manual was a weak point. Fourth, the consideration of content difficulties and simplicity was necessary to improve the material. Fifth, additional items should be included in the introductory presentation, convenience of reorganization, activity material causing learning interest, guidance of substitution experiment, and more concrete notice of experiment activity. Finally, there were positive responses of more than 4.0 point of Likert scale (1 to 5 point scale) in detail investigations of thematic items, which could have possibility that the teaching material was helpful to elementary school science field.

• 대한예방한의학회지
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• 제27권2호
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• pp.49-59
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• 2023

Objectives : This study aimed to identify the factors that affect the utilization of Korean Medicine within the past year. Methods : I analyzed micro-data from the Korean Medicine Utilization Survey (2020), which surveyed the general public. "User (in last 1 year)" were defined as those who had used Korean Medicine within the past year, while "Non-user (in last 1 year)" were defined as those who had used it in their lifetime but not within the past year. I examined several factors, including general characteristics, perceptions of Korean Medicine, satisfaction with Korean Medicine, and intention for future utilization. I conducted the Rao-Scott chi-squared test and complex sample logistic regression analysis. Results : I analyzed a total of 3,762 respondents, of which 1,442 (36.3%) were User (in last 1 year) and 2,320 (63.7%) were Non-user (in last 1 year). User (in last 1 year) and Non-user (in last 1 year) differed significantly in terms of demographic characteristics, perceptions, and satisfaction with Korean Medicine. Women, the elderly, those with low education levels, non-married individuals, those with low-income, chronic diseases, and poor subjective health conditions were significant factors. Those who used Korean Medicine within the past year were more knowledgeable about Korean Medicine than those who had not used it recently, and recognized herbal medicine as safer. In terms of satisfaction, User (in last 1 year) were more satisfied than Non-user (in last 1 year). The more women, the older, the more aware of Korean Medicine, the safer they perceived herbal medicine, the more satisfied they were with its use, the better their subjective health condition, and the absence of chronic diseases, the less they experienced Korean Medicine. Conclusions : The study showed that positive experiences and perceptions of Korean Medicine increase the likelihood of its utilization. Individuals with better subjective health conditions and without chronic diseases have a lower possibility of using Korean Medicine.

• 한국세라믹학회지
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• 제20권2호
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• pp.135-146
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• 1983

This study is to investigate the properties of domestic fly ash for utilization as data in regard to fly ash which is by-product of domestic coal powder plants and the possibility of utilization as insulation material of domestic fly ash. Composition refractoriness size distribution density contents of hollow particles and crystalline phase were examined as the properties of domestic fly ash. As to the fired test pieces of fly ash by itself that varied contents of hollow particles with four kinds and of the fly ash-clay-saw dust system linear shrinkage bulk density app. porosity compressive strength thermal conductivity and structures were investigated for the possibility of utilization as an insulation material. The results are as follows : 1. The properties of the fly ash I) The constituent particle of the fly ash is spherical and it contains not a few hollow particles (floats by water 0.30-0.50 floats by $ZnCl_2$ aq.(SpG=1.71) 6.97-16.72%). ii) The chemical compositions of fly ash are $SiO_243.9-54.1%$ , $Al_2O_321.0-30.7%$ Ig loss is 7.4-24.1% and the principal of Ig loss is unburned carbon. iii) Fly ash was not suitable to use for mortar and concrete mixture because Ig. loss value is higher than 5% 2. Utilization as insulation material I) The test pieces of original fly ash floats by water floats by ZnCl2 aq(SpG=1.71) p, p t by ZnCl2 aq.(SpG=1.71) that were fired at 110$0^{\circ}C$ represented 0.11-0.18 kcal/mh$^{\circ}$ C as thermal conductivity value. ii) The test pieces which (76.5-85.5) wt% fly ash-(8.5, 9.5) wt% clay-(5.0-15.0) wt% saw dust system(68.0-72.0) wt% fly ash -(17.0-18.0)wt% clay-(10.0-15.0) wt% saw dust system and 59.5 wt% fly ash-25.5 wt% clay-15.0wt% saw dust system were fired at 110$0^{\circ}C$ the thermal conductivity was less than 0.1Kcal/mh$^{\circ}$ C. iii) In view of thermal conductivity and economic aspect insulation materials which added saw dust as blowing agent and clay as inorganic binder are better than that of fly ash as it is or separated hollow fly ash particles. iv) When the saw dust contents increased in the (59.5-90.0) wt% saw dust system and when amount of clay de-creased and firing temperature decreased under the condition of equal addition of saw dust app. porosity increased but bulk density compressive strength and thermal conductivity decreased.

• 한국안전학회지
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• 제14권4호
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• pp.135-141
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• 1999

This study is an experimental study to investigate the possibility of the utilization of paper ash as the cover, liner in waste disposal landfill and other construction materials. The sample used in these tests was obtained from Daehan paper mill. A series of tests were peformed to evaluate basic properties, compaction, permeability, compressive strength, consolidation, leaching, and CBR of paper ash. In order to investigate the soil engineering properties of paper ash, the test results were compared with those obtained of fly ash. The results of unconfined compression tests show that paper ash had a larger strength than the fly ash. Also, the maximum dry unit weight of paper ash was approximately 59～76.9% less than that of the fly ash. It was found from the results of leaching test that paper ash is classified as non-detrimental general wastes according to the waste management law.

• 전기학회논문지
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• 제60권9호
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• pp.1767-1769
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• 2011

In a CR (cognitive radio) network, channel selection is one of the important issues for the efficient channel utilization. When the CR user exploits the spectrum of primary network, the interference to the primary network should be minimized. In this paper, we propose a spectrum hole prediction based channel selection scheme to minimize the interference to the primary network. To predict spectrum hole, statistic properties of primary user's traffic is used. By using the predicted spectrum hole, channel is selected and it can reduce the possibility of interference to the primary user and increase the efficiency of spectrum utilization. The performance of proposed channel selection scheme is evaluated by the computer simulation.