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Advances in Science and engineering Technology International Conferences (ASET)

作者： Ali A. Barakat Mohammad A. Jardat Ahmed M. Elsergany Nidal A. Sherif Mechanical Engineering Department American University of Sharjah Sharjah UAE Mechatronics Engineering Graduate Program American University of Sharjah Sharjah UAE

Low-cost navigation systems for ground vehicles often rely on the fusion with Global Positioning System (GPS) for improved state estimation. In this study a low-cost gyroscope is fused with a GPS for improved vehicle heading angle estimation using several Artificial Intelligence (AI) based architectures that include Shallow Neural Networks (SNN), Multi-Layer Neural Networks (MLNN), and Adaptive Neuro- Fuzzy Inference Systems (ANFIS). The primary goal behind using AI based sensor fusion is to obtain a highly accurate vehicle heading estimation suitable for autonomous navigation applications. When available, the GPS signal is used to correct the vehicle's heading angle. The neural networks and ANFIS methods both use the difference between the GPS signal and the heading angle from the integrated gyroscope as inputs. The performance achieved is shown and analyzed. According to the results obtained, the MLNN provides the most accurate heading estimates.

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ForTT-Gen: Network Traffic Generator for Malware Forensics Analysis Training

ForTT-Gen: Network Traffic Generator for Malware Forensics A...

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International Symposium on Digital Forensic and Security (ISDFS)

作者： Jonas Vasconcelos Bistene Clayton Escouper das Chagas Anderson Fernandes Pereira dos Santos Gabriela Moutinho de Souza Dias Ronaldo Moreira Salles Defense Engineering Graduate Program Military Institute of Engineering Rio de Janeiro Brazil Department of Computer Engineering Military Institute of Engineering Rio de Janeiro Brazil CIICESI ESTG Polytechnic of Porto Porto Portugal

ISBN: (数字)9798350330366

ISBN: (纸本)9798350330373

The generation and replication of network traffic are essential tasks for testing, analyzing, simulating, and evaluating the behavior and efficiency of systems, protocols, applications, and network services. However, it faces various challenges and limitations when generating or replicating network traffic in a realistic, responsive, and scalable manner, using appropriate models. This work proposes a modeling of a program for generating and replicating network traffic, called Forensic Training Traffic Generator (ForTT-Gen), aims to address the challenge associated with generating and replicating network traffic generated by malware by creating files that can be used in the analysis of network packets inherent to forensic analysts' training. ForTT-Gen is a tool that can generate and replicate network traffic using a hybrid model that combines the replication of real data and the generation of synthetic data through statistical techniques. Experimental results demonstrate the model's ability to reliably. Accurately reproducing the statistical patterns of the original traffic, is evidenced by a determination coefficient of 1 and a Pearson coefficient of 0.9, all within a 0,58 confidence interval with 95% certainty.

关键词： Training Analytical models Systematics Telecommunication traffic Malware Hybrid power systems Generators

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A Game Theoretic Analysis Regarding Consensus Building of Geothermal Development in Kyushu Region, Japan

SSRN

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SSRN 2023年

作者： Shinozaki, Kotaro Wakeyama, Tatsuya Cooperative program for Resources Engineering Graduate School of Engineering Kyushu University Japan School of Environment and Society Tokyo Institute of Technology Japan

Geothermal potential in Japan is estimated to be about 23 GW, which ranks in third worldwide. Japan aims to increase the installed capacity of geothermal power to 1.6 GW by 2030, but it is no more than 603 MW as of 2021. The domestic geothermal development has been stagnant due to high development cost, strict site regulations and a difficulty of consensus building with local stakeholders. Of these bottlenecks, the high development cost and the strict site regulations have been improved at the initiative of the government. Therefore, consensus building is going to be the primary challenge for geothermal development in the future in Japan. The purpose of this research is to clarify factors that lead to successful consensus building between local hot spa owners and geothermal developers in geothermal projects. This research applied game theory to model stakeholders’ behaviors as a result of individual rationality in geothermal development. The application of game theory implied that the risk awareness of negative impact due to geothermal development makes harder the stakeholders’ agreement. The case studies of geothermal development in Kyushu region showed that risk mitigation measures could positively affect the results of consensus building. © 2023, The Authors. All rights reserved.

关键词： Game theory

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Decade-long performance of constructed wetlands in the dairy industry following an aerated facultative pond

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Chemosphere 2025年 376卷 144271页

作者： Vieira de Mendonça, Henrique Carvalho, Camila da Motta de Costa, Anderson Gomide Ribas, Maria Clara Euriques, Jorge Felipe Post-graduate Program in Agricultural and Environmental Engineering / Institute of Technology / Engineering Department Federal Rural University of Rio de Janeiro Campus Seropédica Seropédica RJ Rio de Janeiro23890-000 Brazil

Long-term data are essential for decision-making in the operation of constructed wetlands;however, such data are scarce. In the present study, a subsurface flow CW system was monitored over a 10-year period for the treatment of wastewater from the dairy industry. Prior to the CW, an aerated facultative lagoon was operated, and its data were also included in the study. The integration of both natural treatment systems (Lagoon + CW) revealed synergy in the combined removal of pollutants and nutrients. Up until the seventh year of operation, the integration of the systems removed more than 98% of COD, BOD5, and TSS, as well as 99.8%, 96.5%, and 71.3% of oils and greases, ammoniacal nitrogen, and total phosphorus, respectively. Surfactants, oils, and greases were entirely removed. The presence of significant clogging and surface flow from the seventh year onwards led to a reduction in treatment efficiency, indicating that this is the maximum recommended operating time for CWs following an aerated facultative lagoon in the dairy industry. After this period, all substrates should be replaced. © 2025 Elsevier Ltd

关键词： Agroindustry Brachiaria Environmental control Pollutant removal Synergy

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Mechanism of Threshold Voltage Instability in Double Gate α-IGZO Nanosheet TFT under Bias and Temperature Stress

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IEEE Journal of the Electron Devices Society 2024年 12卷 464-471页

作者： Aslam, Muhammad Chang, Shu-Wei Chen, Yi-Ho Lee, Yao-Jen Li, Yiming Lee, Wen-Hsi Parallel and Scientific Computing Laboratory National Yang Ming Chiao Tung University Hsinchu300093 Taiwan Electrical Engineering and Computer Science International Graduate Program National Yang Ming Chiao Tung University Hsinchu300093 Taiwan Department of Electrical Engineering National Cheng Kung University Tainan City701401 Taiwan Institute of Pioneer Semiconductor Innovation Industry Academic Innovation School National Yang Ming Chiao Tung University Hsinchu300093 Taiwan Department of Electronics and Electrical Engineering National Yang Ming Chiao Tung University Hsinchu300093 Taiwan Institute of Communications Engineering National Yang Ming Chiao Tung University Hsinchu300093 Taiwan

Amorphous indium gallium zinc oxide (a-IGZO)-based thin film transistors (TFTs) are increasingly becoming popular because of their potential in futuristic applications, including CMOS technology. Given the demand for CMOS-compatible, ultra-scaled, reliable, and high-performing devices, we fabricate and analyze scaled-channel a-IGZO-TFTs with an optimal double-gate structure, a thin nanosheet-based channel, and an effective high- κ dielectric namely HfO2. The reliably reported double gate IGZO nanosheet TFTs (DG-IGZO-NS-TFTs) are tested under positive and negative bias stress at variant temperatures, and the resulting modulations are analyzed critically. The reported DG-IGZO-NSTFTs exhibit a negative side threshold voltage shift (Δ Vth) accompanied by an increase in Ion/Ion(0) under negative bias temperature stress (NBTS) at elevated temperatures, which indicates the presence of additional charges. An anomalous negative side shifting of the Vth is observed under positive bias temperature stress (PBTS), where diffused hydrogen atoms are identified as introducing excess n-type carriers into the channel and causing the observed Δ Vth. The spectroscopic analysis is performed to establish evidence for the assumed mechanisms, and the role of individual gates is investigated in the context of performance variance under temperature-bias stress. Moreover, the partial reversibility of the stress-induced degradation is experimentally established and methodically discussed. Overall, the reported results offer a comprehensive understanding of scaled-channel DG-NS-IGZO-TFTs, which help shape performance-enhancement strategies, control degradation mechanisms, and define appropriate application scenarios. © 2013 IEEE.

关键词： Thin film transistors

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Mechanical Properties of Fine-Grained Concrete Using Fine-Red Sand and Fly Ash for Road Construction: A Case Study in Vietnam 5th

Mechanical Properties of Fine-Grained Concrete Using Fine-Re...

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5th International Conference on Rehabilitation and Maintenance in Civil engineering, ICRMCE 2021

作者： Sang, Nguyen Thanh Quan, Thai Minh Nguyen, May Huu Ho, Lanh Si University of Transport and Communications Hanoi Viet Nam University of Transport Technology 54 Trieu Khuc Thanh Xuan Hanoi100000 Viet Nam Civil and Environmental Engineering Program Graduate School of Advanced Science and Engineering 1-4-1 Kagamiyama Hiroshima Higashi-Hiroshima739-527 Japan

ISBN: (纸本)9789811693472

Nowadays, in order to decrease environmental impacts such as exhaustion of natural resources and CO2 discharge, the partial replacement of cement by fly ash and coarse aggregate by crushed fine aggregate in concrete have been attracted many researchers. This study concentrated on an experimental examination of the mechanical properties of fine-grained concrete using fine-red sand placement for crushed sand. Experimental tests were performed to investigate compressive, splitting tensile, and flexural strength. The results reveal that the compressive, splitting tensile, and flexural strength increased with curing time for all mixtures. The increase in the amount of fine-red sand replacement caused a decrease in all mixtures. It was also found that there is a strong correlation between compressive and splitting tensile strength with a high coefficient of determination. Besides, the results of compressive, splitting tensile, and flexural strength satisfied the requirement of concrete used for pavement. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Compressive strength

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Electrical Characteristic and Power Fluctuations of GAA Si NS CFETs by Simultaneously Considering Six Process Variation Factors

IEEE Open Journal of Nanotechnology

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IEEE Open Journal of Nanotechnology 2023年 4卷 229-238页

作者： Kola, Sekhar Reddy Li, Yiming National Yang Ming Chiao Tung University Parallel and Scientific Computing Laboratory Electrical Engineering and Computer Science International Graduate Program Hsinchu300093 Taiwan Parallel and Scientific Computing Laboratory National Yang Ming Chiao Tung University Hsinchu300093 Taiwan National Yang Ming Chiao Tung University Institute of Communications Engineering Hsinchu300093 Taiwan National Yang Ming Chiao Tung University Institute of Biomedical Engineering Hsinchu300093 Taiwan National Yang Ming Chiao Tung University Department of Electronics and Electrical Engineering Hsinchu300093 Taiwan

Characteristic variability induced by process variation effect (PVE) is one of technological challenges in semiconductor industry. In this work, we computationally study electrical characteristic and power fluctuations induced by six factors of PVE of the gate-all-around (GAA) silicon (Si) nanosheet (NS) complementary field-effect-transistors (CFETs) which are formed by vertically stacking n-FET on top of p-FET. Among the six factors, NS thickness (TNS), NS width (WNS), and gate length (LG) are identified as crucial factors contributing to large variations in device characteristics. The p-FET exhibits substantial off-state current fluctuation (about 151%) due to the bottom parasitic channel leakages. Compared with the magnitudes of dynamic and short circuit powers, the static power is marginal, but it possesses the largest fluctuation (up to 148%). If we assume that each factor of PVE has the same probability distribution as the others and all are mutually independent, the statistical sum of their power fluctuations will exhibit more than 50% overestimations, compared with the results when all factors are considered simultaneously. © 2020 IEEE.

关键词： III-V semiconductors

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Intelligent Adaptive RRT* Path Planning Algorithm for Mobile Robots

Intelligent Adaptive RRT* Path Planning Algorithm for Mobile...

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Advances in Science and engineering Technology International Conferences (ASET)

作者： Omar Khattab Ahmed Yasser Mohammad A. Jaradat Lotfi Romdhane Mechatronics Engineering Graduate Program American University of Sharjah Sharjah UAE Mechanical Engineering Department American University of Sharjah Sharjah UAE

In this paper a new variant of the widely used Rapidly exploring Random Tree (RRT*) algorithm is proposed. The main goal of this variant is to improve the efficiency of the generated path, in both computation time and the quality of the path. In a previous work by the authors, an improved version RRT*N was proposed, where a normal probability distribution was used to control the generation of the random nodes. The proposed variant utilizes an intelligent fuzzy logic system (FLS) to control the generation of the random nodes and commands the robot to the required target introducing an intelligent fuzzy adaptive RRT*N path planning approach (FA-RRT*N). The proposed approach not only reduced the time required about 29.5 % of the time required by the RRT*, but also generally resulted in shorter path about 63% of the path generated by the traditional RRT * .

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Role of Boiling for the Formation of Vertical Metal Zoning and Bonanza Zone in Low-Sulfidation Epithermal Gold-Silver Deposits: A Geochemical Modeling Approach

SSRN

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SSRN 2023年

作者： Aruga, Michitaka Imai, Akira Cooperative Program for Resources Engineering Graduate School of Engineering Kyushu University Fukuoka Japan Department of Earth Resources Engineering Faculty of Engineering Kyushu University Fukuoka Japan

Boiling and mixing are thought to be the most important processes for mineralization in the low-sulfidation epithermal gold-silver deposits. Some low-sulfidation epithermal gold-silver deposits show vertical zoning of metals including gold, silver, copper, lead, and zinc, but effect of boiling and mixing for the vertical zoning of metals through mineralization has been scarcely debated. Therefore, we applied geochemical modeling for an open-isenthalpic boiling system, with a hydrothermal fluid with different initial temperatures, carbon dioxide contents, salinities, and total sulfur contents to numerically evaluate the effect of boiling phenomenon for the vertical zoning in low-sulfidation epithermal gold-silver deposits. Geochemical modeling of boiling phenomenon suggests that boiling is effective for depositing gold, silver, copper, lead, and zinc and that it could form a bonanza zone enriched in gold and silver in the shallow zone above the lead and zinc-rich zone. Temperature, carbon dioxide content, salinity, and hydrogen sulfide content affect the deposited amount of metals, vertical extent, depth of mineralization, and gold/silver ratio of the ore zone. Our modeling of boiling phenomenon demonstrates similar characteristics with natural low-sulfidation epithermal gold-silver deposits, suggesting that boiling is an important mechanism to cause vertical metal zoning in the low-sulfidation epithermal gold-silver deposits, even though mixing could also be important to precipitate metals in some deposits. © 2023, The Authors. All rights reserved.

关键词： Zoning

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Impurity effects in a one-dimensional spin nematic liquid

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Physical Review B 2024年第10期109卷 104404-104404页

作者： Fumiya Nakamura Yasuhiro Tada Quantum Matter Program Graduate School of Advanced Science and Engineering Hiroshima University Higashihiroshima Hiroshima 739-8530 Japan Institute for Solid State Physics University of Tokyo Kashiwa 277-8581 Japan

We study impurity effects in the spin nematic phase of the S=1/2J1−J2 frustrated spin chain under an external magnetic field by using the infinite density matrix renormalization group and bosonization. It is found that local magnetization almost saturates around the impurity, and the entanglement entropy nearly vanishes at the corresponding bonds, not only when the magnetic interactions near the impurity are weakened but also when they are strengthened compared to those in the bulk. Then we examine spin correlations and Friedel oscillations induced by the impurity. The bosonization provides a qualitative understanding of the characteristic behaviors of the magnetization. We also discuss impacts of the impurity on experiments by focusing on NMR spectra.

关键词： High magnetic fields Magnetic order Magnetism 1-dimensional spin chains Bosonization Spin lattice models Tensor network methods

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