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Le Duc Quyen, Young-Gyu Park, In-cheol Lee and Jun Myoung Choi
Microplastics, ubiquitous in our environment, are significantly impacted by the hydrodynamic conditions around them. This study utilizes CFD to explore how various breaker types influence the dispersion and accumulation of microplastics in nearshore area...
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Jun-Cheol Lee and Chang-Joon Lee
The electro-mechanical impedance (EMI) change in Piezoelectric (PZT) sensors embedded in steel-fiber-reinforced mortar (SFRM) was investigated to assess the material setting time. The EMI was continuously monitored for 12 h by the PZT sensor embedded in ...
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Ki-Cheol Yoon, Kwang-Gi Kim, Jun-Won Chung and Byeong-Soo Kim
Sensors in the medical field to detect specific tissues, such as radars, must provide accurate signals from frequency generators. In order to supply an accurate frequency signal, the oscillator must have a low phase noise. Therefore, the resonator used i...
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Mi-Hyun Choi, Jin-Ju Jung, Je-Hyeop Lee, Soon-Cheol Chung, Hyun-Kyung Park and Hyun-Jun Kim
This study aimed to compare the cognitive performance and event-related potential (ERP) patterns between females who have given birth (parous) and those who have not (nulliparous). A total of 50 female participants, including 27 who were parous (33.2 ± 3...
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Junshik Um, Seonghyeon Jang, Young Jun Yoon, Seoung Soo Lee, Ji Yi Lee, Kyung Man Han, Won Jun Choi, Yong Pyo Kim, Cheol-Hee Kim and Chang Hoon Jung
Among many parameters characterizing atmospheric aerosols, aerosol mass extinction efficiency (MEE) is important for understanding the optical properties of aerosols. MEE is expressed as a function of the refractive indices (i.e., composition) and size d...
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Otabek Sattarov, Azamjon Muminov, Cheol Won Lee, Hyun Kyu Kang, Ryumduck Oh, Junho Ahn, Hyung Jun Oh and Heung Seok Jeon
The net profit of investors can rapidly increase if they correctly decide to take one of these three actions: buying, selling, or holding the stocks. The right action is related to massive stock market measurements. Therefore, defining the right action r...
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Sung-Sik Park, Yao-long Hou, Jun-Cheol Lee and Sueng-Won Jeong
Mechanical properties of concrete with bamboo chips as a potential source of aggregates have been investigated in this study.The measurement of this investigation includes slump loss, compressive strength, strain at peak compressive stress, modulus of el...
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Hwi Jun Kim, So Yeon Oh, Doo Woong Lee, Junhyun Kwon and Eun-Cheol Park
The purpose of this study was to investigate the association between intense physical activity and stress in Korean adolescents. The study used data from the Korea Youth Risk Behavior Web-Based Survey (KYRBWS), 2015?2017, that included 170,359 responses ...
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Cheol Won Lee, Jun Dong Lee, Junho Ahn, Hyung Jun Oh, Jung Kyu Park and Heung Seok Jeon
The grid map, representing area information with the number of cells, is a widely used mapping scheme for mobile robots and simultaneous localization and mapping (SLAM) processes. However, the tremendous amount of cells in a grid map for a detailed map r...
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Azamjon Muminov, Otabek Sattarov, Cheol Won Lee, Hyun Kyu Kang, Myeong-Cheol Ko, Ryumduck Oh, Junho Ahn, Hyung Jun Oh and Heung Seok Jeon
Global Positioning Systems (GPS) are successfully used in many fields such as navigation, meteorology, military tasks, mapping, virtual fencing, and more. Smart collars are currently the most convenient device for determining animal location in virtual f...
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