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4th International Conference on Mathematics and Artificial Intelligence, ICMAI 2019

作者： Lu, Xiong Jian, Shen Xiaowen, Bi Department of Radar System OrdnanceNCO. Academy Army engineering university Wuhan China Post-doctoral program on control science and engineering Naval University of Engineering Wuhan China

ISBN: (纸本)9781450362580

UT transform is the core step of unscented kalman filter (UKF) algorithm. The Sigma sampling type of UT transform has great influence on the computational complexity, state estimation accuracy and computational efficiency of UKF-based terrain matching algorithm. In order to obtain the high precision terrain matching method which is suitable for engineering application, the Comparative analysis of three kinds of UKF-based terrain matching algorithms was carried out in this paper. Firstly, the UKF-based underwater terrain matching model was given. Secondly, the principle and the performance characteristics of scaled sampling method, Cubature sampling method, Gauss- Hermite sampling methods were analyzed. The filtering precision factors of symmetric unscented Kalman filter(SUKF), Cubature unscented Kalman filter(CKF), Gauss-Hermite Kalman Filter(GHKF) was studied from the algorithm principle, Thirdly, The computer simulation was performed using univariate nonstationary growth model(UNGM) to test the previous analysis conclusions. Finally underwater terrain matching simulation model was established, and the comparative analysis of matching acuraccy was carried out based on SITAN, SUKF, CKF and GHKF, the matching effect of underwater terrain matching algorithm is obtained. The simulation results show that the UKF algorithm based on symmetric sampling strategy has better filtering precision and less computational complexity which is suitable for the filtering core of underwater terrain matching algorithm. © 2019 Association for Computing Machinery.

关键词： Kalman filters

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The Smart Mobility Insight of Bus Rapid Transit (BRT) Trans Jateng Purwokerto-Purbalingga Ridership 8

The Smart Mobility Insight of Bus Rapid Transit (BRT) Trans ...

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8th International Conference on ICT for Smart Society, ICISS 2021

作者： Kusumawardani, Dwi Mustika Saintika, Yudha Romadlon, Fauzan Information System Study Program Faculty of Informatics Institut Teknologi Telkom Purwokerto Purwokerto Indonesia Industrial Engineering Study Program Faculty of Industrial Engineering and Design Institut Teknologi Telkom Purwokerto Purwokerto Indonesia

ISBN: (纸本)9781665416979

The rapid development of technology presents a new paradigm, one of which is in the transportation sector. The concept of smart mobility is one of the components in the realization of a smart city, which is closely related to the transportation sector. The Purwokerto-Purbalingga Bus Rapid Transit (BRT) is the government's effort to encourage the transportation sector towards smart mobility. It requires three crucial categories: Accessibility, sustainability, and communication and information technology. This study proves and explains that these three categories can be fulfilled by the Purwokerto-Purbalingga Bus Rapid Transit, especially from women's perception, indicated by an average accessibility score of 4.04, sustainability of 4.22, and Information and Communication Technology of 3.80. Efforts that can be taken by the government and Bus Rapid Transit managers include monitoring and evaluating bus stops and bus arrival frequencies as well as developing mobile-based applications that provide real-time information related to bus rapid transit. © 2021 IEEE.

关键词： Sustainable development

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Uncertainty in the seismic response analysis

Uncertainty in the seismic response analysis

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2003 ASCE/SEI Structures Congress and Exposition: engineering Smarter

作者： Haldar, Achintya Huh, Jungwon Department of Civil Engineering and Engineering Mechanics University of Arizona Tucson AZ 85721 Division of Ocean System Ocean System Engineering Program Yosu National University San 96-1 Doonduck-dong Yeosu Jeonnam 550-749 Korea Republic of

A reliability study was conducted to estimate uncertainty in seismic response analysis. The study deals with evaluation of structures subjected to short-duration dynamic and seismic loading. A finite element method (FEM)-based formulation was used in the study to model complex mechanical behaviours. A nonlinear FEM-based algorithm incorporating uncertainties in the random variables, including seismic loading, is proposed in the study to estimate the reliability of realistic structural systems. The nonlinear finite element-based hybrid method, proposed in the model will help to track the propagation of uncertainties in the seismic response analysis.

关键词： Seismology

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Proof-of-concept for a novel management mobility framework for point to point radio communication in wireless networks

Proof-of-concept for a novel management mobility framework f...

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作者： Pitu, Ciprian-Leonard Blendea, Carmen-Melinda Siemens Program and System Engineering Braşov Corporate Technology Central Eastern Europe Department Romania

ISBN: (纸本)9781424473359

In this paper the authors present the results of a prototype implemented based on previous concept studies: a novel mobility management framework with functions for built-in verification of configuration changes and for fault tolerance. This mechanism is required for increased network stability, to prevent the data loss, inadequate changes and to ensure that the moving user stays connected even in a busy network environment. The scope of this paper is to propose a proof of concept study in order to demonstrate the reliability and the superiority of the new architecture when compared to the traditional peer-to-peer (P2P) model. The paper deals with the implementation of the algorithm for fault tolerance and functions for updating the network configuration against all unexpected changes. The advantage of this approach is that the fault rate is extremely decreased, the data flow is constant, time is saved, the client's performance is increased and the server load is reduced. The mobility framework is implemented in Java using OMNET++ platform as a simulation environment.

关键词： Fault tolerance

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Comparison of load calculation between IEC and GL offshore wind turbine design guideline using NREL 5 MW reference wind turbine 25

Comparison of load calculation between IEC and GL offshore w...

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25th International Ocean and Polar engineering Conference, ISOPE 2015

作者： Su, Wei-Nian Huang, Chin-Cheng Lin, Huei-Jeng Mechanical and System Engineering Program Institute of Nuclear Energy Research Taoyuan City Taiwan Department of Engineering Science and Ocean Engineering National Taiwan University Taipei City Taiwan

ISBN: (纸本)9781880653890

IEC 61400-3 (2009) and GL Offshore guideline (2012) are two commonly adopted guidelines for certification of offshore wind turbines worldwide. Comparison of load calculation during normal and idling situations between these two guidelines is performed in this paper. The NREL 5 MW wind turbine with monopile support structure is selected as the reference wind turbine system. Study of the impact on the loading conditions is conducted in this paper. Design load case (DLC) 1, 6, and 7 are considered in this work and the focus is on the Class I system with different turbulence characteristics (category A, B, and C). Both of extreme and fatigue loads are derived at critical components such as blade, shaft, tower, and foundation. The major impact is investigated and identified in this paper. Copyright © 2015 by the International Society of Offshore and Polar Engineers (ISOPE).

关键词： Offshore wind turbines

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Ozone pollution induced-yield loss of major staple crops in China and effects from COVID-19

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Journal of Environmental Sciences 2025年 157卷 804-820页

作者： Haiyang Liu Siyuan Wang Guangsheng Chen Zhaozhong Feng Di Liu Wenxiu Zhang Shufen Pan Hanqin Tian State Key Laboratory For Ecological Security of Regions and Cities Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China University of Chinese Academy of Sciences Beijing 100049 China College of Environmental and Resource Sciences Zhejiang A&F University Hangzhou 311300 China School of Ecology and Applied Meteorology Nanjing University of Information Science and Technology Nanjing 210044 China Department of Engineering and Environmental Studies Program Boston College Chestnut Hill MA 02467-9991 USA Center for Earth System Science and Global Sustainability Schiller Institute for Integrated Science and Society Boston College Chestnut Hill MA 02467-9991 USA Department of Earth and Environmental Sciences Boston College Chestnut Hill MA 02467-9991 USA

Surface ozone (O 3 ) pollution showed a continuous increasing trend during the recent decades in China, posing an increasing threat to food security. A wide range of yield reductions have been reported and thus more studies are needed to narrow down the uncertainty resulting from spatiotemporal accuracy of O 3 metrics and extrapolation methods. Based on a high spatial resolution (0.1°) hourly surface O 3 data, here we analyzed the spatiotemporal O 3 pollution patterns and impacts on yield, production and economic losses for wheat, rice, and maize in China during 2005–2020. The accumulated O 3 exposure over a threshold of 40 ppb (AOT40) increased by 10 % during 2005–2019, and a decrease of 5.56 % was observed in 2020 due to the COVID-19 lockdowns. Rising O 3 pollution reduced national level wheat, rice and maize yields by 14.51 % ± 0.43 %, 11.10 % ± 0.6 %, and 3.99 % ± 0.11 %, respectively. A Business-As-Usual projection suggested that the relative yield loss (RYL) would potentially reach 8 %–18 % at the national scale by 2050 if no emission control is implemented. COVID-19 lockdowns in 2020 led to significantly reduced RYL for maize (0.52 %) and rice (2.17 %) but not for wheat (0.11 %), with the largest reduction (1.88 %–9.4 %) in North China Plain, highlighting the potential benefits of emission control. Our findings provided robust evidence that rising O 3 pollution has significantly affected China's crop yields, production and economic losses, underscoring the urgent need to curb O 3 pollution to safeguard food security, particularly in densely populated and industrialized regions.

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Design and Implementation Study of 3.12 kWp on - Grid Rooftop Solar PV system 7

Design and Implementation Study of 3.12 kWp on - Grid Roofto...

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7th International Conference on Electrical engineering and Informatics, ICEEI 2019

作者： Mizard, Ariyq Naufal Aryani, Dwi Riana Verdianto, Ariono Hudaya, Chairul Faculty of Engineering Universitas Indonesia Department of Electrical Engineering Indonesia Energy System Engineering Master Study Program Faculty of Engineering Universitas Indonesia Kampus Baru UI Depok 16424 Indonesia

ISBN: (纸本)9781728124186

Conversion of fossil fuels as an energy source can be achieved by optimizing the use of renewable energy. One of the most used renewable energy is solar photovoltaics (PV). At present, solar power plant is an electrification support system for certain buildings because the abundant availability of solar radiation. On this research, Power and energy observations are carried out to determine measure the load power trend, the amount of energy flow from PV to the load, as well as import or export power from or to utility grid by direct measurement on Mosque of Faculty of engineering, Universitas Indonesia. According to the study, the highest power generated by solar power plant mostly occurs at 12:00 - 13:00 with the highest power generated by PV is 2,344 W and the exported power is 939 W, and 32.19% - 55.67% electricity energy savings consumption from utility grid. © 2019 IEEE.

关键词： Solar energy

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The Combined Localization Based on TDOA and FDOA for High-Speed Moving Object 13

The Combined Localization Based on TDOA and FDOA for High-Sp...

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Joint 13th International Conference on Soft Computing and Intelligent systems and 25th International Symposium on Advanced Intelligent systems, SCIS and ISIS 2024

作者： Jeon, Seul-Bi Jo, Tae-Ho Park, Jong-Hwan Hwang, Suk-Seung Chosun University Interdisciplinary Program in IT-Bio Convergence System Dept. of Electronic Engineering Gwangju Korea Republic of Soletop Co. Ltd Satellite System Lab Daejeon Korea Republic of School of Electronic Eigineering Chosun University Interdisciplinary Program in IT-Bio Convergence System Gwangju Korea Republic of

ISBN: (纸本)9798350373332

Detecting the location of high-speed moving objects is a critical issue in various fields including the medical, emergence service, aerospace, defense areas, etc. In general, Time Difference of Arrival (TDOA) and Frequency Difference of Arrival (FDOA) techniques are primarily used for estimating the location of a moving object. Although these techniques provide excellent estimation performance for the stationary or low speed moving object, they may have significant location estimation errors for the high-speed object moving. In order to improve this problem, this paper introduces the combined localization method based on TDOA and FDOA for estimating the location of high-speed moving objects efficiently. © 2024 IEEE.

关键词： Time difference of arrival

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Solving the bottleneck problem at automated highway exits

Solving the bottleneck problem at automated highway exits

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1996 Vehicular Navigation and Information systems Conference, VNIS 1996

作者： Ran, Bin Huang, Wenjing Leight, Shawn Intelligent Transportation System Program Department of Civil and Environmental Engineering University of Wisconsin at Madison 2256 Engineering Hall 1415 Engineering Drive MadisonWI53706 United States

Automated Highway systems (AHS) offer a potential solution that could triple current freeway capacity. A three-fold increase in freeway capacity would translate into a significant increase in peak freeway traffic flow. The corresponding increase of flow on urban roads due to exiting AHS vehicles could quickly overwhelm the capacity of urban streets and lead to critical bottlenecking of AHS flow. If exiting AHS vehicles can not sufficiently clear AHS exits because the local streets are jammed, traffic will spill onto the AHS mainline and reduce AHS capacity. The loss of AHS capacity due to congestion in urban destinations and the resulting back spill of traffic onto the AHS will greatly detract from the AHS system. The following Non-Intermodal Interface (NII) and Intermodal Interface (II) strategies are proposed as solutions to this critical bottleneck problem: 1) the dispersion of flow through AHS networks;2) the dispersion of flow at commuter destinations;and 3) the consolidation of flow at central locations. Specifically, smart street signals and prioritized street design;intermodal terminals;and automated garages are identified as potential solutions. This paper discusses the advantages and disadvantages of each of the three general strategies. Specifically, it discusses the advantages and disadvantages of each of the four specific solutions through simulated scenarios which account for varying ramp volumes, trip attraction patterns, and urban structures. Our investigation shows that creative combinations of these methods can be useful to integrate future AHS with local road networks. © 1996 IEEE.

关键词： Hazardous materials spills

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Evaluation of Ni–B alloy electroplated with different anionic groups

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Journal of Materials Research and Technology 2023年 27卷 8360-8371页

作者： Cheng, An-Yu Pu, Nen-Wen Liu, Yih-Ming Hsieh, Min-Syuan Ger, Ming-Der Department of Chemistry & Materials Engineering Chung Cheng Institute of Technology National Defense University Taiwan Taoyuan Taiwan Department of Electrical Engineering Yuan Ze University Zhongli Taiwan Taoyuan320 Taiwan System Engineering and Technology Program National Chiao Tung University Hsinchu Taiwan

In order to study the effects of the main nickel salt on the electroplated nanocrystalline Ni–B alloy coating, the deposition rates, surface morphology, crystallinity, grain sizes, hardness, and corrosion resistance of the Ni–B films electrodeposited with plating baths containing separately nickel sulfate (NS) and nickel sulfamate (NSA) under various temperatures and current densities were compared. Under all conditions, the NSA bath system offered higher deposition rates and lower B contents than the NS counterpart because of the formation of Ni-ammonium complex, which can be adsorbed faster than nickel ions. These two groups of coatings had similar surface morphology and crystallinity under all plating conditions except for those plated with the NS bath system at 60 °C, wherein significant changes in surface texture and preferred crystal orientation as well as an abrupt increase in grain size occurred. The coating hardness was optimized by reducing the grain size and increasing the boron content because of the combined effects of grain refinement strengthening and solid solution strengthening. The differences between the two main salt systems can be explained by the presence of ammonium ions in the NSA bath, which not only increased the deposition rate but also maintained the preferred orientation in Ni (111) at high temperature. Our results indicate that, under high current density and high temperature operation conditions, the NSA main salt plating system is a more favorable option for obtaining higher quality Ni–B alloy coatings. © 2023 The Authors

关键词： Sulfur compounds

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