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A Basic Study on the Manufacture of UHPC 3D stereoscopic panels using 3D Printer (3D 프린터를 활용한 UHPC 3D 입체패널 제작에 관한 기초적 연구)

  • Kim, Tae-Ik;Yoon, Ju-Yong;Choi, Byung-Keol;Park, Yong-Kyu;Lee, Dae Seek;Yoon, Gi-Won
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2021.11a
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    • pp.154-155
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    • 2021

  • Appearance finish is important for amorphous buildings to maximize amorphousness, and GFRC, glass, and metal are mostly used as exterior materials for amorphous buildings currently applied. However, the existing exterior materials showed limitations in amorphous expression, texture, and color expression. In this study, a 3D stereoscopic panel mold was manufactured using the FDM method, one of the 3D printing technologies, and 3D stereoscopic panel production was reviewed using Ultra High Performance Concrete (UHPC), which has excellent physical and mechanical performance and expression. In order to overcome the limitations of unstructured expression, a UHPC 3D stereoscopic panel using the FDM method, one of the 3D printing technologies, was manufactured. Unlike steel molds, FRP molds, and EPS molds, the FDM method can be applied to various materials, and complex shapes are implemented. If it is used using recyclable materials as well as PLA filaments used in the FDM method, it will overcome the limitations of amorphous expression and activate the production of 3D stereoscopic panels that have secured eco-friendliness.

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Edwin W. Smith's Study of African Religions: Characteristics and Limitations (에드윈 스미스(1876-1957)의 아프리카 종교연구의 특징과 한계)

  • Ahn, Shin
    • Journal of the Korean Association of African Studies
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    • v.43
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    • pp.89-111
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    • 2014

  • This article deals with the characteristics and limitations of Edwin W. Smith's study of African religions. He was born as son of British Primitive Methodist missionary in South Africa, 1876. He was trained to become a Bible translator. After marriage he moved to Africa with his wife and translated the Bible into the Ila language. Most Western missionaries despised African cultures and religions, but Smith proposed a new way to study African cultures and religions on the anthropological basis of respect and understanding. Though he kept the mission mind to convert Africans to Christians and supported the fulfillment theology, he accepted the values and significance of African religions. With scientific and object approaches, Smith regarded Africans as rational and philosophical human beings. He rejected the traditional concept of mission that Western form of Christianity should be forced upon the mind and heart of Africans. Rather Smith encouraged Africans to build up their own churches and theologies with creative and dynamic worldviews including magic, Dynamism, Spiritism, ancestor worship and the faith to the Supreme Being. In conclusion, despite his limitations as missionary, Smith has been remembered as 'the founder of African Studies' and 'the ancestor of British phenomenological school.' His missionary experience became the solid foundation for becoming scholar of African religions.

SPOT Robot Hardware and Software Performance Analysis for Autonomous and Unmanned Construction Site Management System (건설 현장 관리 자율 및 무인화 시스템을 위한 SPOT 로봇 하드웨어 및 소프트웨어 성능 분석)

  • Park, Bong-Jin;Kim, Do-Keun;Jang, Se-Jun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2023.05a
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    • pp.221-222
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    • 2023

  • The purpose of this study is to analyze the applicability and limitations of SPOT robots in the construction industry. The SPOT robot, which is being introduced to construction sites for smart construction with the progress of the 4th industrial revolution, is shaped like a four-legged dog and is equipped with various sensors for data collection and autonomous driving. In this study, hardware and software were analyzed, such as the size of the SPOT robot, mobility on slopes and heights, operating environment, and software functions that can collect data with a sensor weighing up to 14 kg. In addition, while the SPOT robot operates in a construction environment, performance such as stability, accuracy, signal connection distance, and obstacle avoidance are evaluated, and the applicability and limitations of the SPOT robot in the construction industry are analyzed. Based on this analysis, the purpose of this study is to evaluate when and how SPOT robots can be effectively used at construction sites, identify limitations, and derive contributions and improvements for the construction industry.

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