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Secrecy Performance of Energy Harvesting Wireless Networks in the Presence of Multiple Eavesdroppers
Tien-Vu Truong,Nhan-Van Vo,Dac-Binh Ha,Duc-Dung Tran 한국정보통신학회 2016 2016 INTERNATIONAL CONFERENCE Vol.8 No.1
This paper investigates the physical layer secrecy performance of radio frequency energy harvesting wireless networks over Rayleigh fading channels. The considered RF-EH system consists of a power transfer station, a source and a destination in the presence of multiple passive eavesdroppers. By using statistical characteristics of the signal-to-noise ratio (SNR), the exact closed-form expressions of existence probability of secrecy capacity is derived. Finally, simulation results are provided to confirm the correctness of our calculation.
Le Duc Anh Ho,Hojun Kim(김호준),Vu Binh Nam,Daeho Lee(이대호) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11
We present a facile method for synthesizing a large-scale, well-dispersed copper oxide (CuO<SUB>x</SUB>) nanoparticle (NP) ink. The uniform CuO<SUB>x</SUB> thin films prepared using the synthesized NP ink by spin coating were applied to a laser digital patterning process, obtaining finely-structured Cu electrodes with the low resistivity of 10.5 μΩ cm. By controlling the software embedded in the laser scanning system, Cu-grid with a low sheet resistance (8.45 Ω·sq<SUP>−1</SUP>) and high transmittance (87.4% at 550 nm) were achieved. Furthermore, the effect of polyvinylpyrrolidone ratio, which was used as a dispersing agent in the NP ink and a reducing agent in the laser process, was carefully examined in detail. The superior stability of the Cu electrodes on the substrates was confirmed using various tests including bending and twisting, cyclic bending, and tape pull tests. Finally, a flexible transparent touchscreen panel based on Cu electrodes was fabricated to demonstrate a possible application.
Physical Layer Secrecy Performance of RF-EH Networks with Multiple Eavesdroppers
Truong, Tien-Vu,Vo, Nhan-Van,Ha, Dac-Binh,Tran, Duc-Dung The Korea Institute of Information and Commucation 2016 Journal of information and communication convergen Vol.14 No.3
In this study, we investigate the physical layer secrecy performance of RF energy harvesting (EH) networks over Rayleigh fading channels. The RF-EH system considered here consists of one power transfer station, one source, one destination, and multiple passive eavesdroppers. The source harvests energy from the power transfer station and transmits the information to the destination by using a time switching-based relaying protocol. The eavesdroppers try to extract the transmitted information without an active attack. By using the statistical characteristics of the signal-to-noise ratio (SNR), the exact closed-form expressions of the existence probability of the secrecy capacity and the secrecy outage probability are derived. Further, we analyze the secrecy performance of the system with respect to various system parameters, such as the location of the system elements and the number of eavesdroppers. Finally, the equivalent Monte Carlo simulation results are provided to confirm the correctness of our calculations.
( Dien Minh Vu ),( Binh Hoa Pham ),( Duc Pham Xuan ),( Dung Nguyen Dinh ),( Vinh Nguyen Duy ) 한국공업화학회 2023 공업화학 Vol.34 No.3
Fuel cells are one of the renewable energy sources that have sparked a lot of scientific attention for solving problems related to the energy crisis and environmental pollution. One of the most crucial subjects concerning the utilization of fuel cells is modeling. Therefore, an analytical steady-state and dynamic fuel cell model was described in this study. The parameter for the identification process was investigated, and the MATLAB/Simulink implementation was demonstrated. A 15-W proton exchange membrane fuel cell was used to apply the suggested modeling methodology. Comparing experimental and simulation findings indicated that the model error was constrained to 3%. This study showed that temperature and humidity affect fuel cell performance.
Van Chien NGUYEN,Duc Binh VU,Thi Hoang Yen NGUYEN,Cong Do PHAM,Tuyet Ngan HUYNH 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.4
In recent years, there has been a substantial theoretical and empirical study on the role that financial market development has significantly played in promoting economic growth and development in the world. The development of an economy requires the financial industry to be developed. In the context of rapid economic development, global warming has become a serious problem with issues such as rising average temperatures, climate change, rising sea level, and increasing carbon dioxide emissions. This study aims to examine the influence of economic growth, financial development, transportation capacity, and environmental degradation. Using time-series data from 1986 to 2019 and environmental degradation being measured by CO2 emissions, the study employs a quantity of ample unit root tests, the structural break unit root tests, Autoregressive Distributed Lag (ARDL), and cointegration bounds test. The results show that there is a significant long-term cointegration among study variables. Empirical findings also indicate that an increase in per capita GDP and financial development worsens environmental quality whereas transportation capacity and foreign investment can improve environmental quality.