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Design and fabrication of a dual-axis solar tracking systemIn this paper, we present the design and fabrication of a solar panel system capable of automatic dual-axis tracking based on sunlight using a servo mechanism controlled by an Arduino Nano. The system... Author: Tien Dung Nguyen Keyword: Dual-axis solar tracking system Arduino power monitoring IoT
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Modeling and simulation of light focusing through an absorbing interface based on the Debye–
Török–Fedorov–Nakajima frameworkWe develop a unified Debye–Török–Fedorov–Nakajima (DTFN) model for tight focusing across an absorbing interface, extending the Debye–Wolf/Török integrals to complex refractive indices by enforcing the... Author: Do Trang Mai, Nguyen Quan The Keyword: High-NA focusing absorbing interface complex refractive index Debye–Wolf integral Fedorov–Nakajima branch condition vectorial point-spread function stratified media biomedical optics
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Study on effective mode area by Ge20Sb5Se75 suspended-core fiber filled with carbon disulfideThis paper presents a study on the effective mode area and effective refractive index of a suspended-core photonic crystal fiber based on a Ge20Sb5Se75 chalcogenide with CS2-filled air holes, with the... Author: Lanh Chu Van Keyword: Suspended-core photonic crystal fiber chalcogenide carbon disulfide effective mode area
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Exploring the historical perspective of Mr. Dao Duy Anh through the memoir “Evening ReflectionsThe memoir Evening Reflections - Nhớ nghĩ chiều hôm, with 30 chapters, encapsulates the turbulent life of Professor Dao Duy Anh, from his departure from Quang Binh and involve-ment in political... Author: Huong Ho Thi Lien Keyword: Dao Duy Anh historical perspective historical research methods
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Potential, current status of tourism development, and orientations for green tourism development in the Unesco Global Geopark of Dong Van Karst Plateau, Tuyen Quang provinceThis study aims to assess the potential and propose a system of strategic solutions for green tourism development in the UNESCO Global Geopark of Dong Van Karst Plateau, Tuyen Quang Province. The... Author: Hoa Nguyễn Hoàng, Duy Nguyễn Văn Keyword: green tourism UNESCO Global Geopark Dong Van Karst Plateau sustainable development Tuyen Quang
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Designing lighting control circuit for developing image scanning device of bullet and cartridge case traceFirearms are highly lethal weapons primarily used in the military, security, sports, hunting. In addition to their historical, cultural, and national defense significance, firearm-related crime... Author: Trang Đinh Thị Huyền Keyword: Firearm examination equipment to examine gun and bullet traces lighting control circuit
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Sex education for primary students in Le Thuy district, Quang Binh provinceThis study investigated the implementation of sex education in both schools and families by surveying 102 primary school teachers and 105 parents of primary students in Quang Binh province, Vietnam.... Author: Nguyen Minh Giang Keyword: Sex education primary students Quang Binh province Vietnam
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