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박종협,김문집 순천향대학교 기초과학연구소 2000 순천향자연과학연구 논문집 Vol.6 No.2
The purpose of this study was to explore more desirable direction for integrated science curriculum, by looking into foreign studies and recent trend on integrated science, analyzing our country's middle school science curriculum and making some proposals about the same. The findings of this study were as below: First, appropriate contents should be selected and organized according to the object of curriculum in order to realize it successfully. Second, scientific knowledge and inquiry activities required to have students well grounded in science should be grouped into basic and enrichment courses separately to ensure level-based learning. Third, abstract learning materials should be increased gradually with the advance of grade to inspire more learning interest in students. Fourth, learning contents should have higher tractsfer effect, and should be organized to help students acquire an consistent concept of science. Fifth, students should be encouraged to find scientific concept and principle in natural phenomenon and get an systematic understanding of them. The above-mentioned findings suggested that, in order to put integrated science curriculum on the right track in middle school, a variety of programs should be developed to further self-directed, phase- in learning and improve creativity.
An experimental study on the development and verification of NCC(new concrete cutting) system
박종협,한종욱 국제구조공학회 2018 Structural Engineering and Mechanics, An Int'l Jou Vol.65 No.2
This paper introduces the development process of NCC(New Concrete Cutting) system and analyzes first verification test. Based on the first verification test results, some problems of NCC system have been newly modified. We carry out the second verification test. We tried to verify cutting performance and dust control efficiency of NCC system through the cutting test of concrete bridge piers. In particular, this verification test strives to solve the problem of concrete dust, which is the biggest problem of dry cutting method. The remaining dust problems in cutting section tried to solve through this verification test. This verification test of the NCC system shows that the dust problem of dry cutting method is closely controlled and solved. In conclusion, the proposed NCC method is superior to the dry cutting method in all aspects, including cutting performance, dust vacuum efficiency and cooling effect. The proposed NCC system is believed to be able to provide eco-friendly cutting technology to various industries, such as the removal of the SOC structures and the dismantling of nuclear plants, which have recently become a hot issue in the field of concrete cutting.